Added tests for MeanTelemetryProvider

* [imagery] fix for issue #1799
if there is no immediately new imagery incoming, forward to latest image in history on un-pause

* add test to check whether image is forwarded to latest image on un-pause

bower.json

@@ -17,7 +17,7 @@
     "screenfull": "^3.0.0",
     "node-uuid": "^1.4.7",
     "comma-separated-values": "^3.6.4",
-    "FileSaver.js": "^0.0.2",
+    "file-saver": "^1.3.3",
     "zepto": "^1.1.6",
     "eventemitter3": "^1.2.0",
     "lodash": "3.10.1",

openmct.js

@@ -33,7 +33,7 @@ requirejs.config({
         "moment": "bower_components/moment/moment",
         "moment-duration-format": "bower_components/moment-duration-format/lib/moment-duration-format",
         "moment-timezone": "bower_components/moment-timezone/builds/moment-timezone-with-data",
-        "saveAs": "bower_components/FileSaver.js/FileSaver.min",
+        "saveAs": "bower_components/file-saver/FileSaver.min",
         "screenfull": "bower_components/screenfull/dist/screenfull.min",
         "text": "bower_components/text/text",
         "uuid": "bower_components/node-uuid/uuid",

platform/commonUI/edit/src/capabilities/EditorCapability.js

@@ -101,10 +101,15 @@ define(
          */
         EditorCapability.prototype.finish = function () {
             var domainObject = this.domainObject;
-            return this.transactionService.cancel().then(function () {
-                domainObject.getCapability("status").set("editing", false);
-                return domainObject;
-            });
+
+            if (this.transactionService.isActive()) {
+                return this.transactionService.cancel().then(function () {
+                    domainObject.getCapability("status").set("editing", false);
+                    return domainObject;
+                });
+            } else {
+                return Promise.resolve(domainObject);
+            }
         };
 
         /**

platform/commonUI/edit/test/capabilities/EditorCapabilitySpec.js

@@ -62,6 +62,7 @@ define(
                 );
                 mockTransactionService.commit.andReturn(fastPromise());
                 mockTransactionService.cancel.andReturn(fastPromise());
+                mockTransactionService.isActive = jasmine.createSpy('isActive');
 
                 mockStatusCapability = jasmine.createSpyObj(
                     "statusCapability",
@@ -141,6 +142,7 @@ define(
 
             describe("finish", function () {
                 beforeEach(function () {
+                    mockTransactionService.isActive.andReturn(true);
                     capability.edit();
                     capability.finish();
                 });
@@ -152,6 +154,23 @@ define(
                 });
             });
 
+            describe("finish", function () {
+                beforeEach(function () {
+                    mockTransactionService.isActive.andReturn(false);
+                    capability.edit();
+                });
+
+                it("does not cancel transaction when transaction is not active", function () {
+                    capability.finish();
+                    expect(mockTransactionService.cancel).not.toHaveBeenCalled();
+                });
+
+                it("returns a promise", function () {
+                    expect(capability.finish() instanceof Promise).toBe(true);
+                });
+
+            });
+
             describe("dirty", function () {
                 var model = {};
 

platform/commonUI/formats/src/UTCTimeFormat.js

@@ -121,6 +121,9 @@ define([
     };
 
     UTCTimeFormat.prototype.parse = function (text) {
+        if (typeof text === 'number') {
+            return text;
+        }
         return moment.utc(text, DATE_FORMATS).valueOf();
     };
 

platform/commonUI/general/res/sass/_status.scss

@@ -50,7 +50,6 @@
         content:'';
         font-family: symbolsfont;
         font-size: 0.8em;
-        display: inline;
         margin-right: $interiorMarginSm;
     }
 }

platform/commonUI/general/res/sass/controls/_messages.scss

@@ -120,7 +120,11 @@
 	}
 
 	.status-indicator {
+        background: none !important;
 		margin-right: $interiorMarginSm;
+        &[class*='s-status']:before {
+            font-size: 1em;
+        }
 	}
 
 	.count {

platform/features/clock/bundle.js

@@ -23,10 +23,13 @@
 define([
     "moment-timezone",
     "./src/indicators/ClockIndicator",
+    "./src/indicators/FollowIndicator",
     "./src/services/TickerService",
+    "./src/services/TimerService",
     "./src/controllers/ClockController",
     "./src/controllers/TimerController",
     "./src/controllers/RefreshingController",
+    "./src/actions/FollowTimerAction",
     "./src/actions/StartTimerAction",
     "./src/actions/RestartTimerAction",
     "./src/actions/StopTimerAction",
@@ -37,10 +40,13 @@ define([
 ], function (
     MomentTimezone,
     ClockIndicator,
+    FollowIndicator,
     TickerService,
+    TimerService,
     ClockController,
     TimerController,
     RefreshingController,
+    FollowTimerAction,
     StartTimerAction,
     RestartTimerAction,
     StopTimerAction,
@@ -80,6 +86,11 @@ define([
                         "CLOCK_INDICATOR_FORMAT"
                     ],
                     "priority": "preferred"
+                },
+                {
+                    "implementation": FollowIndicator,
+                    "depends": ["timerService"],
+                    "priority": "fallback"
                 }
             ],
             "services": [
@@ -90,6 +101,11 @@ define([
                         "$timeout",
                         "now"
                     ]
+                },
+                {
+                    "key": "timerService",
+                    "implementation": TimerService,
+                    "depends": ["openmct"]
                 }
             ],
             "controllers": [
@@ -134,6 +150,15 @@ define([
                 }
             ],
             "actions": [
+                {
+                    "key": "timer.follow",
+                    "implementation": FollowTimerAction,
+                    "depends": ["timerService"],
+                    "category": "contextual",
+                    "name": "Follow Timer",
+                    "cssClass": "icon-clock",
+                    "priority": "optional"
+                },
                 {
                     "key": "timer.start",
                     "implementation": StartTimerAction,

platform/features/clock/src/actions/FollowTimerAction.js

@@ -0,0 +1,56 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define(
+    [],
+    function () {
+
+        /**
+         * Designates a specific timer for following. Timelines, for example,
+         * use the actively followed timer to display a time-of-interest line
+         * and interpret time conductor bounds in the Timeline's relative
+         * time frame.
+         *
+         * @implements {Action}
+         * @memberof platform/features/clock
+         * @constructor
+         * @param {ActionContext} context the context for this action
+         */
+        function FollowTimerAction(timerService, context) {
+            var domainObject =
+                context.domainObject &&
+                context.domainObject.useCapability('adapter');
+            this.perform =
+                timerService.setTimer.bind(timerService, domainObject);
+        }
+
+        FollowTimerAction.appliesTo = function (context) {
+            var model =
+                (context.domainObject && context.domainObject.getModel()) ||
+                {};
+
+            return model.type === 'timer';
+        };
+
+        return FollowTimerAction;
+    }
+);

platform/features/clock/src/indicators/FollowIndicator.js

@@ -0,0 +1,57 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define(
+    ['moment'],
+    function (moment) {
+        var NO_TIMER = "No timer being followed";
+
+        /**
+         * Indicator that displays the active timer, as well as its
+         * current state.
+         * @implements {Indicator}
+         * @memberof platform/features/clock
+         */
+        function FollowIndicator(timerService) {
+            this.timerService = timerService;
+        }
+
+        FollowIndicator.prototype.getGlyphClass = function () {
+            return "";
+        };
+
+        FollowIndicator.prototype.getCssClass = function () {
+            return (this.timerService.getTimer()) ? "icon-timer s-status-ok" : "icon-timer";
+        };
+
+        FollowIndicator.prototype.getText = function () {
+            var timer = this.timerService.getTimer();
+            return (timer) ? 'Following timer ' + timer.getModel().name : NO_TIMER;
+        };
+
+        FollowIndicator.prototype.getDescription = function () {
+            return "";
+        };
+
+        return FollowIndicator;
+    }
+);

platform/features/clock/src/services/TimerService.js

@@ -0,0 +1,113 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define(['EventEmitter'], function (EventEmitter) {
+
+    /**
+     * Tracks the currently-followed Timer object. Used by
+     * timelines et al to synchronize to a particular timer.
+     *
+     * The TimerService emits `change` events when the active timer
+     * is changed.
+     */
+    function TimerService(openmct) {
+        EventEmitter.apply(this);
+        this.time = openmct.time;
+        this.objects = openmct.objects;
+    }
+
+    TimerService.prototype = Object.create(EventEmitter.prototype);
+
+    /**
+     * Set (or clear, if `timer` is undefined) the currently active timer.
+     * @param {DomainObject} timer the new active timer
+     * @emits change
+     */
+    TimerService.prototype.setTimer = function (timer) {
+        this.timer = timer;
+        this.emit('change');
+
+        if (this.stopObserving) {
+            this.stopObserving();
+            delete this.stopObserving;
+        }
+
+        if (timer) {
+            this.stopObserving =
+                this.objects.observe(timer, '*', this.setTimer.bind(this));
+        }
+    };
+
+    /**
+     * Get the currently active timer.
+     * @return {DomainObject} the active timer
+     * @emits change
+     */
+    TimerService.prototype.getTimer = function () {
+        return this.timer;
+    };
+
+
+    /**
+     * Check if there is a currently active timer.
+     * @return {boolean} true if there is a timer
+     */
+    TimerService.prototype.hasTimer = function () {
+        return !!this.timer;
+    };
+
+    /**
+     * Convert the provided timestamp to milliseconds relative to
+     * the active timer.
+     * @return {number} milliseconds since timer start
+     */
+    TimerService.prototype.convert = function (timestamp) {
+        var clock = this.time.clock();
+        var canConvert = this.hasTimer() &&
+            !!clock &&
+            this.timer.timerState !== 'stopped';
+
+        if (!canConvert) {
+            return undefined;
+        }
+
+        var now = clock.currentValue();
+        var delta = this.timer.timerState === 'paused' ?
+            now - this.timer.pausedTime : 0;
+        var epoch = this.timer.timestamp;
+
+        return timestamp - epoch - delta;
+    };
+
+    /**
+     * Get the value of the active clock, adjusted to be relative to the active
+     * timer. If there is no clock or no active timer, this will return
+     * `undefined`.
+     * @return {number} milliseconds since the start of the active timer
+     */
+    TimerService.prototype.now = function () {
+        var clock = this.time.clock();
+        return clock && this.convert(clock.currentValue());
+    };
+
+    return TimerService;
+});

platform/features/clock/test/actions/FollowTimerActionSpec.js

@@ -0,0 +1,87 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define([
+    "../../src/actions/FollowTimerAction"
+], function (FollowTimerAction) {
+    var TIMER_SERVICE_METHODS =
+        ['setTimer', 'getTimer', 'clearTimer', 'on', 'off'];
+
+    describe("The Follow Timer action", function () {
+        var testContext;
+        var testModel;
+        var testAdaptedObject;
+
+        beforeEach(function () {
+            testModel = {};
+            testContext = { domainObject: jasmine.createSpyObj('domainObject', [
+                'getModel',
+                'useCapability'
+            ]) };
+            testAdaptedObject = { foo: 'bar' };
+            testContext.domainObject.getModel.andReturn(testModel);
+            testContext.domainObject.useCapability.andCallFake(function (c) {
+                return c === 'adapter' && testAdaptedObject;
+            });
+        });
+
+        it("is applicable to timers", function () {
+            testModel.type = "timer";
+            expect(FollowTimerAction.appliesTo(testContext)).toBe(true);
+        });
+
+        it("is inapplicable to non-timers", function () {
+            testModel.type = "folder";
+            expect(FollowTimerAction.appliesTo(testContext)).toBe(false);
+        });
+
+        describe("when instantiated", function () {
+            var mockTimerService;
+            var action;
+
+            beforeEach(function () {
+                mockTimerService = jasmine.createSpyObj(
+                    'timerService',
+                    TIMER_SERVICE_METHODS
+                );
+                action = new FollowTimerAction(mockTimerService, testContext);
+            });
+
+            it("does not interact with the timer service", function () {
+                TIMER_SERVICE_METHODS.forEach(function (method) {
+                    expect(mockTimerService[method]).not.toHaveBeenCalled();
+                });
+            });
+
+            describe("and performed", function () {
+                beforeEach(function () {
+                    action.perform();
+                });
+
+                it("sets the active timer", function () {
+                    expect(mockTimerService.setTimer)
+                        .toHaveBeenCalledWith(testAdaptedObject);
+                });
+            });
+        });
+    });
+});

platform/features/clock/test/indicators/FollowIndicatorSpec.js

@@ -0,0 +1,61 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define(["../../src/indicators/FollowIndicator"], function (FollowIndicator) {
+    var TIMER_SERVICE_METHODS =
+        ['setTimer', 'getTimer', 'clearTimer', 'on', 'off'];
+
+    describe("The timer-following indicator", function () {
+        var mockTimerService;
+        var indicator;
+
+        beforeEach(function () {
+            mockTimerService =
+                jasmine.createSpyObj('timerService', TIMER_SERVICE_METHODS);
+            indicator = new FollowIndicator(mockTimerService);
+        });
+
+        it("implements the Indicator interface", function () {
+            expect(indicator.getGlyphClass()).toEqual(jasmine.any(String));
+            expect(indicator.getCssClass()).toEqual(jasmine.any(String));
+            expect(indicator.getText()).toEqual(jasmine.any(String));
+            expect(indicator.getDescription()).toEqual(jasmine.any(String));
+        });
+
+        describe("when a timer is set", function () {
+            var testModel;
+            var mockDomainObject;
+
+            beforeEach(function () {
+                testModel = { name: "some timer!" };
+                mockDomainObject = jasmine.createSpyObj('timer', ['getModel']);
+                mockDomainObject.getModel.andReturn(testModel);
+                mockTimerService.getTimer.andReturn(mockDomainObject);
+            });
+
+            it("displays the timer's name", function () {
+                expect(indicator.getText().indexOf(testModel.name))
+                    .not.toEqual(-1);
+            });
+        });
+    });
+});

platform/features/clock/test/services/TimerServiceSpec.js

@@ -0,0 +1,77 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define([
+    '../../src/services/TimerService'
+], function (TimerService) {
+    describe("TimerService", function () {
+        var callback;
+        var mockmct;
+        var timerService;
+
+        beforeEach(function () {
+            callback = jasmine.createSpy('callback');
+            mockmct = {
+                time: { clock: jasmine.createSpy('clock') },
+                objects: { observe: jasmine.createSpy('observe') }
+            };
+            timerService = new TimerService(mockmct);
+            timerService.on('change', callback);
+        });
+
+        it("initially emits no change events", function () {
+            expect(callback).not.toHaveBeenCalled();
+        });
+
+        it("reports no current timer", function () {
+            expect(timerService.getTimer()).toBeUndefined();
+        });
+
+        describe("setTimer", function () {
+            var testTimer;
+
+            beforeEach(function () {
+                testTimer = { name: "I am some timer; you are nobody." };
+                timerService.setTimer(testTimer);
+            });
+
+            it("emits a change event", function () {
+                expect(callback).toHaveBeenCalled();
+            });
+
+            it("reports the current timer", function () {
+                expect(timerService.getTimer()).toBe(testTimer);
+            });
+
+            it("observes changes to an object", function () {
+                var newTimer = { name: "I am another timer." };
+                expect(mockmct.objects.observe).toHaveBeenCalledWith(
+                    testTimer,
+                    '*',
+                    jasmine.any(Function)
+                );
+                mockmct.objects.observe.mostRecentCall.args[2](newTimer);
+                expect(timerService.getTimer()).toBe(newTimer);
+            });
+        });
+    });
+});

platform/features/imagery/src/controllers/ImageryController.js

@@ -255,6 +255,8 @@ define(
                 if (this.nextDatum) {
                     this.updateValues(this.nextDatum);
                     delete this.nextDatum;
+                } else {
+                    this.updateValues(this.$scope.imageHistory[this.$scope.imageHistory.length - 1]);
                 }
                 this.autoScroll = true;
             }

platform/features/imagery/test/controllers/ImageryControllerSpec.js

@@ -183,6 +183,17 @@ define(
                     expect(controller.getImageUrl()).toEqual(newUrl);
                 });
 
+                it("forwards large image view to latest image in history on un-pause", function () {
+                    $scope.imageHistory = [
+                        { utc: 1434600258122, url: 'some/url1', selected: false},
+                        { utc: 1434600258123, url: 'some/url2', selected: false}
+                    ];
+                    controller.paused(true);
+                    controller.paused(false);
+
+                    expect(controller.getImageUrl()).toEqual(controller.getImageUrl($scope.imageHistory[1]));
+                });
+
                 it("subscribes to telemetry", function () {
                     expect(openmct.telemetry.subscribe).toHaveBeenCalledWith(
                         newDomainObject,
@@ -227,7 +238,7 @@ define(
                     expect(controller.updateHistory(mockDatum)).toBe(false);
                 });
 
-                describe("user clicks on imagery thumbnail", function () {
+                describe("when user clicks on imagery thumbnail", function () {
                     var mockDatum = { utc: 1434600258123, url: 'some/url', selected: false};
 
                     it("pauses and adds selected class to imagery thumbnail", function () {
@@ -248,6 +259,7 @@ define(
                         expect(controller.getTime()).toEqual(controller.timeFormat.format(mockDatum.utc));
                     });
                 });
+
             });
 
             it("initially shows an empty string for date/time", function () {

platform/features/layout/src/FixedController.js

@@ -360,22 +360,47 @@ define(
          */
         FixedController.prototype.updateView = function (telemetryObject, datum) {
             var metadata = this.openmct.telemetry.getMetadata(telemetryObject);
-            var rangeMetadata = metadata.valuesForHints(['range'])[0];
-            var rangeKey = rangeMetadata.source || rangeMetadata.key;
-            var valueMetadata = metadata.value(rangeKey);
+            var telemetryKeyToDisplay = this.chooseTelemetryKeyToDisplay(metadata);
+            var formattedTelemetryValue = this.getFormattedTelemetryValueForKey(telemetryKeyToDisplay, datum, metadata);
             var limitEvaluator = this.openmct.telemetry.limitEvaluator(telemetryObject);
-            var formatter = this.openmct.telemetry.getValueFormatter(valueMetadata);
-            var value = datum[valueMetadata.key];
-            var alarm = limitEvaluator && limitEvaluator.evaluate(datum, rangeKey);
+            var alarm = limitEvaluator && limitEvaluator.evaluate(datum, telemetryKeyToDisplay);
 
             this.setDisplayedValue(
                 telemetryObject,
-                formatter.format(value),
+                formattedTelemetryValue,
                 alarm && alarm.cssClass
             );
             this.digest();
         };
 
+        /**
+         * @private
+         */
+        FixedController.prototype.getFormattedTelemetryValueForKey = function (telemetryKeyToDisplay, datum, metadata) {
+            var valueMetadata = metadata.value(telemetryKeyToDisplay);
+            var formatter = this.openmct.telemetry.getValueFormatter(valueMetadata);
+
+            return formatter.format(datum[valueMetadata.key]);
+        };
+
+        /**
+         * @private
+         */
+        FixedController.prototype.chooseTelemetryKeyToDisplay = function (metadata) {
+            // If there is a range value, show that preferentially
+            var telemetryKeyToDisplay = metadata.valuesForHints(['range'])[0];
+
+            // If no range is defined, default to the highest priority non time-domain data.
+            if (telemetryKeyToDisplay === undefined) {
+                var valuesOrderedByPriority = metadata.values();
+                telemetryKeyToDisplay = valuesOrderedByPriority.filter(function (valueMetadata) {
+                    return !(valueMetadata.hints.domain);
+                })[0];
+            }
+
+            return telemetryKeyToDisplay.source;
+        };
+
         /**
          * Request the last historical data point for the given domain objects
          * @param {object[]} objects
@@ -388,7 +413,9 @@ define(
             objects.forEach(function (object) {
                 self.openmct.telemetry.request(object, {start: bounds.start, end: bounds.end, size: 1})
                     .then(function (data) {
-                        self.updateView(object, data[data.length - 1]);
+                        if (data.length > 0) {
+                            self.updateView(object, data[data.length - 1]);
+                        }
                     });
             });
             return objects;

platform/features/layout/src/LayoutController.js

@@ -127,9 +127,7 @@ define(
                         if (self.droppedIdToSelectAfterRefresh) {
                             self.select(null, self.droppedIdToSelectAfterRefresh);
                             delete self.droppedIdToSelectAfterRefresh;
-                        }
-
-                        if (composition.indexOf(self.selectedId) === -1) {
+                        } else if (composition.indexOf(self.selectedId) === -1) {
                             self.clearSelection();
                         }
                     }

platform/features/layout/test/FixedControllerSpec.js

@@ -178,7 +178,6 @@ define(
                     Promise.resolve(mockChildren)
                 );
 
-
                 mockScope.model = testModel;
                 mockScope.configuration = testConfiguration;
                 mockScope.selection = jasmine.createSpyObj(
@@ -194,7 +193,8 @@ define(
 
                 mockMetadata = jasmine.createSpyObj('mockMetadata', [
                     'valuesForHints',
-                    'value'
+                    'value',
+                    'values'
                 ]);
                 mockMetadata.value.andReturn({
                     key: 'value'
@@ -653,6 +653,39 @@ define(
                     });
                 });
 
+                it("selects an range value to display, if available", function () {
+                    mockMetadata.valuesForHints.andReturn([
+                        {
+                            key: 'range',
+                            source: 'range'
+                        }
+                    ]);
+                    var key = controller.chooseTelemetryKeyToDisplay(mockMetadata);
+                    expect(key).toEqual('range');
+                });
+
+                it("selects the first non-domain value to display, if no range available", function () {
+                    mockMetadata.valuesForHints.andReturn([]);
+                    mockMetadata.values.andReturn([
+                        {
+                            key: 'domain',
+                            source: 'domain',
+                            hints: {
+                                domain: 1
+                            }
+                        },
+                        {
+                            key: 'image',
+                            source: 'image',
+                            hints: {
+                                image: 1
+                            }
+                        }
+                    ]);
+                    var key = controller.chooseTelemetryKeyToDisplay(mockMetadata);
+                    expect(key).toEqual('image');
+                });
+
                 it("reflects limit status", function () {
                     mockLimitEvaluator.evaluate.andReturn({cssClass: "alarm-a"});
                     controller.updateView(mockTelemetryObject, [{

platform/features/listview/bundle.js

@@ -49,7 +49,7 @@
                 {
                     "key": "ListViewController",
                     "implementation": ListViewController,
-                    "depends": ["$scope"]
+                    "depends": ["$scope", "formatService"]
                 }
             ],
             "directives": [

platform/features/listview/src/controllers/ListViewController.js

@@ -21,7 +21,7 @@
  *****************************************************************************/
 
 define(function () {
-    function ListViewController($scope) {
+    function ListViewController($scope, formatService) {
         this.$scope = $scope;
         $scope.orderByField = 'title';
         $scope.reverseSort = false;
@@ -30,6 +30,8 @@ define(function () {
         var unlisten = $scope.domainObject.getCapability('mutation')
             .listen(this.updateView.bind(this));
 
+        this.utc = formatService.getFormat('utc');
+
         $scope.$on('$destroy', function () {
             unlisten();
         });
@@ -50,17 +52,13 @@ define(function () {
                 icon: child.getCapability('type').getCssClass(),
                 title: child.getModel().name,
                 type: child.getCapability('type').getName(),
-                persisted: new Date(
-                    child.getModel().persisted
-                ).toUTCString(),
-                modified: new Date(
-                    child.getModel().modified
-                ).toUTCString(),
+                persisted: this.utc.format(child.getModel().persisted),
+                modified: this.utc.format(child.getModel().modified),
                 asDomainObject: child,
                 location: child.getCapability('location'),
                 action: child.getCapability('action')
             };
-        });
+        }, this);
     };
 
     return ListViewController;

platform/features/listview/test/controllers/ListViewControllerSpec.js

@@ -31,7 +31,9 @@ define(
                 controller,
                 childModel,
                 typeCapability,
-                mutationCapability;
+                mutationCapability,
+                formatService;
+
             beforeEach(function () {
                 unlistenFunc = jasmine.createSpy("unlisten");
 
@@ -41,6 +43,18 @@ define(
                 );
                 mutationCapability.listen.andReturn(unlistenFunc);
 
+                formatService = jasmine.createSpyObj(
+                    "formatService",
+                    ["getFormat"]
+                );
+                formatService.getFormat.andReturn(jasmine.createSpyObj(
+                    'utc',
+                    ["format"]
+                ));
+                formatService.getFormat().format.andCallFake(function (v) {
+                    return "formatted " + v;
+                });
+
                 typeCapability = jasmine.createSpyObj(
                     "typeCapability",
                     ["getCssClass", "getName"]
@@ -94,20 +108,27 @@ define(
                 );
                 scope.domainObject = domainObject;
 
-                controller  = new ListViewController(scope);
+                controller  = new ListViewController(scope, formatService);
 
                 waitsFor(function () {
                     return scope.children;
                 });
             });
+
+            it("uses the UTC time format", function () {
+                expect(formatService.getFormat).toHaveBeenCalledWith('utc');
+            });
+
             it("updates the view", function () {
                 expect(scope.children[0]).toEqual(
                     {
                         icon: "icon-folder",
                         title: "Battery Charge Status",
                         type: "Folder",
-                        persisted: "Wed, 07 Jun 2017 20:34:57 GMT",
-                        modified: "Wed, 07 Jun 2017 20:34:57 GMT",
+                        persisted: formatService.getFormat('utc')
+                            .format(childModel.persisted),
+                        modified: formatService.getFormat('utc')
+                            .format(childModel.modified),
                         asDomainObject: childObject,
                         location: ''
                     }

platform/features/table/src/controllers/TelemetryTableController.js

@@ -170,6 +170,9 @@ define(
          * @param rows
          */
         TelemetryTableController.prototype.addRowsToTable = function (rows) {
+            rows.forEach(function (row) {
+                this.$scope.rows.push(row);
+            }, this);
             this.$scope.$broadcast('add:rows', rows);
         };
 

platform/features/table/test/controllers/TelemetryTableControllerSpec.js

@@ -436,5 +436,28 @@ define(
                 expect(mockScope.$broadcast).toHaveBeenCalledWith("remove:rows", discardedRows);
             });
 
+            describe('when telemetry is added', function () {
+                var testRows;
+                var expectedRows;
+
+                beforeEach(function () {
+                    testRows = [{ a: 0 }, { a: 1 }, { a: 2 }];
+                    mockScope.rows = [{ a: -1 }];
+                    expectedRows = mockScope.rows.concat(testRows);
+
+                    spyOn(controller.telemetry, "on").andCallThrough();
+                    controller.registerChangeListeners();
+
+                    controller.telemetry.on.calls.forEach(function (call) {
+                        if (call.args[0] === 'added') {
+                            call.args[1](testRows);
+                        }
+                    });
+                });
+
+                it("adds it to rows in scope", function () {
+                    expect(mockScope.rows).toEqual(expectedRows);
+                });
+            });
         });
     });

platform/features/timeline/bundle.js

@@ -29,6 +29,7 @@ define([
     "./src/controllers/TimelineTickController",
     "./src/controllers/TimelineTableController",
     "./src/controllers/TimelineGanttController",
+    "./src/controllers/TimelineTOIController",
     "./src/controllers/ActivityModeValuesController",
     "./src/capabilities/ActivityTimespanCapability",
     "./src/capabilities/TimelineTimespanCapability",
@@ -37,6 +38,7 @@ define([
     "./src/capabilities/CostCapability",
     "./src/directives/MCTSwimlaneDrop",
     "./src/directives/MCTSwimlaneDrag",
+    "./src/directives/MCTResourceGraphDrop",
     "./src/services/ObjectLoader",
     "./src/chart/MCTTimelineChart",
     "text!./res/templates/values.html",
@@ -59,6 +61,7 @@ define([
     TimelineTickController,
     TimelineTableController,
     TimelineGanttController,
+    TimelineTOIController,
     ActivityModeValuesController,
     ActivityTimespanCapability,
     TimelineTimespanCapability,
@@ -67,6 +70,7 @@ define([
     CostCapability,
     MCTSwimlaneDrop,
     MCTSwimlaneDrag,
+    MCTResourceGraphDrop,
     ObjectLoader,
     MCTTimelineChart,
     valuesTemplate,
@@ -502,6 +506,15 @@ define([
                         "TIMELINE_MAXIMUM_OFFSCREEN"
                     ]
                 },
+                {
+                    "key": "TimelineTOIController",
+                    "implementation": TimelineTOIController,
+                    "depends": [
+                        "openmct",
+                        "timerService",
+                        "$scope"
+                    ]
+                },
                 {
                     "key": "ActivityModeValuesController",
                     "implementation": ActivityModeValuesController,
@@ -566,6 +579,13 @@ define([
                         "$interval",
                         "$log"
                     ]
+                },
+                {
+                    "key": "mctResourceGraphDrop",
+                    "implementation": MCTResourceGraphDrop,
+                    "depends": [
+                        "dndService"
+                    ]
                 }
             ],
             "services": [

platform/features/timeline/res/sass/_timeline-thematic.scss

@@ -29,6 +29,44 @@
             }
         }
     }
+
+    // Follow Line
+    .l-follow-line {
+        // TODO: move before and after into l-timeline-gantt so those only render in that pane
+        pointer-events: none;
+        position: absolute;
+        top: 0; bottom: 0;
+        width: 1px;
+        z-index: 9; // Just below .l-hover-btns-holder
+    }
+}
+
+.l-timeline-gantt {
+    .l-follow-line {
+        $d: 0.8rem;
+        top: $interiorMargin;
+        &:before,
+        &:after {
+            content: '';
+            display: block;
+            height: $d;
+            width: $d;
+            position: absolute;
+            top: 0;
+            @include transform(translateX(-50%));
+        }
+        &:before {
+            // Icon blocker
+            width: 2 * $d;
+        }
+        &:after {
+            // Icon
+            font-size: $d;
+            line-height: $d;
+            text-align: center;
+        }
+    }
+
 }
 
 .s-timeline-gantt {
@@ -108,10 +146,9 @@
     }
     .s-hover-btns-holder {
         $bg: $timelineHeaderColorBg;
-        $bga: 1;
         $l: 5%;
         @include user-select(none);
-        @include background-image(linear-gradient(-90deg, rgba($bg, $bga), rgba($bg, $bga) 70%, rgba($bg, 0) 100%));
+        @include background-image(linear-gradient(-90deg, rgba($bg, 1), rgba($bg, 1) 70%, rgba($bg, 0) 100%));
         .s-button {
             height: 16px;
             line-height: 16px;
@@ -129,4 +166,27 @@
             color: $timelineResourceGraphFg;
         }
     }
+
+    .s-follow-line {
+        background: rgba($timeControllerToiLineColor, 0.5);
+    }
+
+    .s-timeline-gantt {
+        .s-follow-line {
+            &:after {
+                // Icon
+                color: $timeControllerToiLineColor;
+                content: $glyph-icon-timer;
+                font-family: symbolsfont;
+                text-shadow: $shdwItemText;
+            }
+            &:before {
+                // Blocker
+                $bg: $timelineHeaderColorBg;
+                $l: 30%;
+                @include background-image(linear-gradient(90deg, rgba($bg, 0), rgba($bg, 1) $l, rgba($bg, 1) 100% - $l, rgba($bg, 0)));
+
+            }
+        }
+    }
 }

platform/features/timeline/res/sass/_timelines.scss

@@ -38,6 +38,10 @@
     .l-timeline-pane {
         @include absPosDefault();
 
+		&.drop-over {
+			background-color: lighten($colorEditAreaBg, 5%);
+		}
+
 	    .l-width-control {
 		    position: relative;
 	    }
@@ -75,6 +79,10 @@
                 }
             }
             &.l-timeline-gantt {
+                .abs.l-timeline-gantt-header-w {
+                    overflow: hidden;
+                    height: $timelineTopPaneHeaderH;
+                }
                 .l-swimlanes-holder {
                     @include scrollV(scroll);
                     bottom: $scrollbarTrackSize;

platform/features/timeline/res/sass/timeline-espresso.scss

@@ -24,6 +24,7 @@ $output-bourbon-deprecation-warnings: false;
 
 @import "../../../../commonUI/general/res/sass/constants";
 @import "../../../../commonUI/general/res/sass/mixins";
+@import "../../../../commonUI/general/res/sass/glyphs";
 @import "../../../../commonUI/themes/espresso/res/sass/constants";
 @import "../../../../commonUI/themes/espresso/res/sass/mixins";
 @import "constants";

platform/features/timeline/res/sass/timeline-snow.scss

@@ -24,6 +24,7 @@ $output-bourbon-deprecation-warnings: false;
 
 @import "../../../../commonUI/general/res/sass/constants";
 @import "../../../../commonUI/general/res/sass/mixins";
+@import "../../../../commonUI/general/res/sass/glyphs";
 @import "../../../../commonUI/themes/snow/res/sass/constants";
 @import "../../../../commonUI/themes/snow/res/sass/mixins";
 @import "constants";

platform/features/timeline/res/sass/timeline.scss

@@ -24,6 +24,7 @@ $output-bourbon-deprecation-warnings: false;
 
 @import "../../../../commonUI/general/res/sass/constants";
 @import "../../../../commonUI/general/res/sass/mixins";
+@import "../../../../commonUI/general/res/sass/glyphs";
 @import "../../../../commonUI/themes/espresso/res/sass/constants";
 @import "../../../../commonUI/themes/espresso/res/sass/mixins";
 @import "constants";

platform/features/timeline/res/templates/timeline.html

@@ -77,7 +77,8 @@
         <mct-splitter></mct-splitter>
 
         <!-- BOTTOM PANE RESOURCE LEGEND -->
-        <div class="split-pane-component abs l-timeline-pane t-pane-h l-pane-btm s-timeline-resource-legend l-timeline-resource-legend">
+        <div mct-resource-graph-drop
+             class="split-pane-component abs l-timeline-pane t-pane-h l-pane-btm s-timeline-resource-legend l-timeline-resource-legend">
             <div class="l-title s-title">{{ngModel.title}}Resource Graph Legend</div>
             <div class="l-legend-items legend">
                 <mct-include key="'timeline-legend-item'"
@@ -96,109 +97,124 @@
 
     <!-- RIGHT PANE: GANTT AND RESOURCE PLOTS -->
     <span ng-controller="TimelineZoomController as zoomController" class="abs">
-    <mct-split-pane anchor="bottom"
+
+        <span class="toi-control-holder temp" ng-controller="TimelineTOIController as toiController">
+            <mct-split-pane anchor="bottom"
                     position="pane.y"
                     class="abs split-pane-component l-timeline-pane l-pane-r t-pane-v">
 
-        <!-- TOP PANE GANTT BARS -->
-        <div class="split-pane-component l-timeline-pane t-pane-h l-pane-top t-timeline-gantt l-timeline-gantt s-timeline-gantt">
-            <div class="l-hover-btns-holder s-hover-btns-holder">
-                <a class="s-button icon-arrows-out"
-                   ng-click="zoomController.fit()"
-                   ng-show="true"
-                   title="Zoom to fit">
-                </a>
+                <!-- TOP PANE GANTT BARS -->
+                <div class="split-pane-component l-timeline-pane t-pane-h l-pane-top t-timeline-gantt l-timeline-gantt s-timeline-gantt">
+                    <div class="l-hover-btns-holder s-hover-btns-holder">
+                        <a class="s-button icon-timer"
+                           ng-click="scroll.follow = true"
+                           ng-show="!toiController.isFollowing() && toiController.isActive()"
+                           title="Follow time bounds">
+                        </a>
 
-                <a class="s-button icon-magnify-in"
-                   ng-click="zoomController.zoom(-1)"
-                   ng-show="true"
-                   title="Zoom in">
-                </a>
+                        <a class="s-button icon-arrows-out"
+                           ng-click="scroll.follow = false; zoomController.fit()"
+                           ng-show="true"
+                           title="Zoom to fit">
+                        </a>
 
-                <a class="s-button icon-magnify-out"
-                   ng-click="zoomController.zoom(1)"
-                   ng-show="true"
-                   title="Zoom out">
-                </a>
-            </div>
+                        <a class="s-button icon-magnify-in"
+                           ng-click="scroll.follow = false; zoomController.zoom(-1)"
+                           ng-show="true"
+                           title="Zoom in">
+                        </a>
 
-            <div style="overflow: hidden; position: absolute; left: 0; top: 0; right: 0; height: 30px;" mct-scroll-x="scroll.x">
-                <mct-include key="'timeline-ticks'"
-                             parameters="{
-                                         fullWidth: zoomController.width(timelineController.end()),
-                                         start: scroll.x,
-                                         width: scroll.width,
-                                         step: zoomController.toPixels(zoomController.zoom()),
-                                         toMillis: zoomController.toMillis
-                                         }">
-                </mct-include>
-            </div>
+                        <a class="s-button icon-magnify-out"
+                           ng-click="scroll.follow = false; zoomController.zoom(1)"
+                           ng-show="true"
+                           title="Zoom out">
+                        </a>
+                    </div>
 
-            <div class="t-swimlanes-holder l-swimlanes-holder"
-                 mct-scroll-x="scroll.x"
-                 mct-scroll-y="scroll.y">
-                <div class="l-width-control"
-                     ng-style="{ width: zoomController.width(timelineController.end()) + 'px' }">
-                    <div class="t-swimlane s-swimlane l-swimlane"
-                         ng-repeat="swimlane in timelineController.swimlanes()"
-                         ng-class="{
-                                   exceeded: swimlane.exceeded(),
-                                   selected: selection.selected(swimlane),
-                                   'drop-into': swimlane.highlight(),
-                                   'drop-after': swimlane.highlightBottom()
-                                   }"
-                         ng-click="selection.select(swimlane)"
-                         mct-swimlane-drop="swimlane">
+                    <div style="overflow: hidden; position: absolute; left: 0; top: 0; right: 0; height: 30px;" mct-scroll-x="scroll.x">
+                        <mct-include key="'timeline-ticks'"
+                                     parameters="{
+                                                 fullWidth: zoomController.width(timelineController.end()),
+                                                 start: scroll.x,
+                                                 width: scroll.width,
+                                                 step: zoomController.toPixels(zoomController.zoom()),
+                                                 toMillis: zoomController.toMillis
+                                                 }">
+                        </mct-include>
+                    </div>
+                    <div ng-if="toiController.isActive()" class="l-follow-line s-follow-line"
+                         ng-style="{ left: toiController.x() - scroll.x + 'px' }"></div>
 
-                        <mct-representation key="'gantt'"
-                                            mct-object="swimlane.domainObject"
-                                            parameters="{
-                                                        scroll: scroll,
-                                                        toPixels: zoomController.toPixels
-                                                        }">
-                        </mct-representation>
+                    <div class="t-swimlanes-holder l-swimlanes-holder"
+                         mct-scroll-x="scroll.x"
+                         mct-scroll-y="scroll.y">
+                        <div class="l-width-control"
+                             ng-style="{ width: zoomController.width(timelineController.end()) + 'px' }">
+                            <div class="t-swimlane s-swimlane l-swimlane"
+                                 ng-repeat="swimlane in timelineController.swimlanes()"
+                                 ng-class="{
+                                           exceeded: swimlane.exceeded(),
+                                           selected: selection.selected(swimlane),
+                                           'drop-into': swimlane.highlight(),
+                                           'drop-after': swimlane.highlightBottom()
+                                           }"
+                                 ng-click="selection.select(swimlane)"
+                                 mct-swimlane-drop="swimlane">
 
-                        <span ng-if="selection.selected(swimlane)">
-                            <span ng-repeat="handle in timelineController.handles()"
-                                  ng-style="handle.style(zoomController)"
-                                  style="position: absolute; top: 0px; bottom: 0px;"
-                                  class="handle"
-                                  ng-class="{ start: $index === 0, mid: $index === 1, end: $index > 1 }"
-                                  mct-drag-down="handle.begin()"
-                                  mct-drag="handle.drag(delta[0], zoomController); timelineController.refresh()"
-                                  mct-drag-up="handle.finish()">
-                            </span>
-                        </span>
+                                <mct-representation key="'gantt'"
+                                                    mct-object="swimlane.domainObject"
+                                                    parameters="{
+                                                                scroll: scroll,
+                                                                toPixels: zoomController.toPixels
+                                                                }">
+                                </mct-representation>
+
+                                <span ng-if="selection.selected(swimlane)">
+                                    <span ng-repeat="handle in timelineController.handles()"
+                                          ng-style="handle.style(zoomController)"
+                                          style="position: absolute; top: 0px; bottom: 0px;"
+                                          class="handle"
+                                          ng-class="{ start: $index === 0, mid: $index === 1, end: $index > 1 }"
+                                          mct-drag-down="handle.begin()"
+                                          mct-drag="handle.drag(delta[0], zoomController); timelineController.refresh()"
+                                          mct-drag-up="handle.finish()">
+                                    </span>
+                                </span>
+                            </div>
+                        </div>
                     </div>
                 </div>
-            </div>
-        </div>
 
-        <!-- HORZ SPLITTER -->
-        <mct-splitter></mct-splitter>
+                <!-- HORZ SPLITTER -->
+                <mct-splitter></mct-splitter>
 
-        <!-- BOTTOM PANE RESOURCE GRAPHS AND RIGHT PANE HORIZONTAL SCROLL CONTROL -->
-        <div class="split-pane-component l-timeline-resource-graph l-timeline-pane t-pane-h l-pane-btm">
-            <div class="l-graphs-holder"
-                 mct-resize="scroll.width = bounds.width">
-                <div class="t-graphs l-graphs">
-                    <mct-include key="'timeline-resource-graphs'"
-                                 parameters="{
-                                             origin: zoomController.toMillis(scroll.x),
-                                             duration: zoomController.toMillis(scroll.width),
-                                             graphs: timelineController.graphs()
-                                             }">
-                    </mct-include>
+                <!-- BOTTOM PANE RESOURCE GRAPHS AND RIGHT PANE HORIZONTAL SCROLL CONTROL -->
+                <div class="split-pane-component l-timeline-resource-graph l-timeline-pane t-pane-h l-pane-btm">
+                    <div class="l-graphs-holder"
+                         mct-resize="scroll.width = bounds.width">
+                        <div class="t-graphs l-graphs">
+                            <mct-include key="'timeline-resource-graphs'"
+                                         parameters="{
+                                                     origin: zoomController.toMillis(scroll.x),
+                                                     duration: zoomController.toMillis(scroll.width),
+                                                     graphs: timelineController.graphs()
+                                                     }">
+                            </mct-include>
+                        </div>
+                        <div ng-if="toiController.isActive()" class="l-follow-line s-follow-line"
+                             ng-style="{ left: toiController.x() - scroll.x + 'px' }"></div>
+                    </div>
+                    <div mct-scroll-x="scroll.x"
+                         class="t-pane-r-scroll-h-control l-scroll-control s-scroll-control">
+                        <div class="l-width-control"
+                             ng-style="{ width: zoomController.width(timelineController.end()) + 'px' }">
+                        </div>
+                    </div>
                 </div>
-            </div>
-            <div mct-scroll-x="scroll.x"
-                 class="t-pane-r-scroll-h-control l-scroll-control s-scroll-control">
-                <div class="l-width-control"
-                     ng-style="{ width: zoomController.width(timelineController.end()) + 'px' }">
-                </div>
-            </div>
-        </div>
-    </mct-split-pane>
+            </mct-split-pane>
+        </span>
+
+
     </span>
 </mct-split-pane>
 </div>

platform/features/timeline/src/controllers/TimelineTOIController.js

@@ -0,0 +1,111 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define([], function () {
+
+    /**
+     * Tracks time-of-interest in timelines, updating both scroll state
+     * (when appropriate) and positioning of the displayed line.
+     */
+    function TimelineTOIController(openmct, timerService, $scope) {
+        this.openmct = openmct;
+        this.timerService = timerService;
+        this.$scope = $scope;
+
+        this.change = this.change.bind(this);
+        this.bounds = this.bounds.bind(this);
+        this.destroy = this.destroy.bind(this);
+
+        this.timerService.on('change', this.change);
+        this.openmct.time.on('bounds', this.bounds);
+
+        this.$scope.$on('$destroy', this.destroy);
+
+        this.$scope.scroll.follow = this.timerService.hasTimer();
+        if (this.$scope.zoomController) {
+            this.bounds(this.openmct.time.bounds());
+        }
+    }
+
+
+    /**
+     * Handle a `change` event from the timer service; track the
+     * new timer.
+     */
+    TimelineTOIController.prototype.change = function () {
+        this.$scope.scroll.follow =
+            this.$scope.scroll.follow || this.timerService.hasTimer();
+    };
+
+    /**
+     * Handle a `bounds` event from the time API; scroll the timeline
+     * to match the current bounds, if currently in follow mode.
+     */
+    TimelineTOIController.prototype.bounds = function (bounds) {
+        if (this.isFollowing()) {
+            var start = this.timerService.convert(bounds.start);
+            var end = this.timerService.convert(bounds.end);
+            this.duration = bounds.end - bounds.start;
+            this.$scope.zoomController.bounds(start, end);
+        }
+    };
+
+    /**
+     * Handle a `$destroy` event from scope; detach all observers.
+     */
+    TimelineTOIController.prototype.destroy = function () {
+        this.timerService.off('change', this.change);
+        this.openmct.time.off('bounds', this.bounds);
+    };
+
+    /**
+     * Get the x position of the time-of-interest line,
+     * in pixels from the left edge of the timeline area.
+     */
+    TimelineTOIController.prototype.x = function () {
+        var now = this.timerService.now();
+
+        if (now === undefined) {
+            return undefined;
+        }
+
+        return this.$scope.zoomController.toPixels(this.timerService.now());
+    };
+
+    /**
+     * Check if there is an active time-of-interest to be shown.
+     * @return {boolean} true when active
+     */
+    TimelineTOIController.prototype.isActive = function () {
+        return this.x() !== undefined;
+    };
+
+    /**
+     * Check if the timeline should be following time conductor bounds.
+     * @return {boolean} true when following
+     */
+    TimelineTOIController.prototype.isFollowing = function () {
+        return !!this.$scope.scroll.follow && this.timerService.now() !== undefined;
+    };
+
+    return TimelineTOIController;
+});

platform/features/timeline/src/controllers/TimelineZoomController.js

@@ -32,7 +32,8 @@ define(
             // Prefer to start with the middle index
             var zoomLevels = ZOOM_CONFIGURATION.levels || [1000],
                 zoomIndex = Math.floor(zoomLevels.length / 2),
-                tickWidth = ZOOM_CONFIGURATION.width || 200;
+                tickWidth = ZOOM_CONFIGURATION.width || 200,
+                lastWidth = Number.MAX_VALUE; // Don't constrain prematurely
 
             function toMillis(pixels) {
                 return (pixels / tickWidth) * zoomLevels[zoomIndex];
@@ -55,19 +56,29 @@ define(
 
             function setScroll(x) {
                 $window.requestAnimationFrame(function () {
-                    $scope.scroll.x = x;
+                    $scope.scroll.x = Math.min(
+                        Math.max(x, 0),
+                        lastWidth - $scope.scroll.width
+                    );
                     $scope.$apply();
                 });
             }
 
-            function initializeZoomFromTimespan(timespan) {
-                var timelineDuration = timespan.getDuration();
+            function initializeZoomFromStartEnd(start, end) {
+                var duration = end - start;
                 zoomIndex = 0;
-                while (toMillis($scope.scroll.width) < timelineDuration &&
+                while (toMillis($scope.scroll.width) < duration &&
                         zoomIndex < zoomLevels.length - 1) {
                     zoomIndex += 1;
                 }
-                setScroll(toPixels(timespan.getStart()));
+                setScroll(toPixels(start));
+            }
+
+            function initializeZoomFromTimespan(timespan) {
+                return initializeZoomFromStartEnd(
+                    timespan.getStart(),
+                    timespan.getEnd()
+                );
             }
 
             function initializeZoom() {
@@ -101,6 +112,13 @@ define(
                     }
                     return zoomLevels[zoomIndex];
                 },
+                /**
+                 * Adjust the current zoom bounds to fit both the
+                 * start and the end time provided.
+                 * @param {number} start the starting timestamp
+                 * @param {number} end the ending timestamp
+                 */
+                bounds: initializeZoomFromStartEnd,
                 /**
                  * Set the zoom level to fit the bounds of the timeline
                  * being viewed.
@@ -119,14 +137,14 @@ define(
                  */
                 toMillis: toMillis,
                 /**
-                 * Get the pixel width necessary to fit the specified
-                 * timestamp, expressed as an offset in milliseconds from
-                 * the start of the timeline.
+                 * Set the maximum timestamp value to be displayed, and get
+                 * the pixel width necessary to display this value.
                  * @param {number} timestamp the time to display
                  */
                 width: function (timestamp) {
                     var pixels = Math.ceil(toPixels(timestamp * (1 + PADDING)));
-                    return Math.max($scope.scroll.width, pixels);
+                    lastWidth = Math.max($scope.scroll.width, pixels);
+                    return lastWidth;
                 }
             };
         }

platform/features/timeline/src/directives/MCTResourceGraphDrop.js

@@ -0,0 +1,81 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define(
+    ['./SwimlaneDragConstants'],
+    function (SwimlaneDragConstants) {
+
+        /**
+         * Defines the `mct-resource-graph-drop` directive. When a drop occurs
+         * on an element with this attribute, the swimlane targeted by the drop
+         * will receive the dropped domain object (at which point it can handle
+         * the drop, typically by toggling the swimlane graph.)
+         * @param {DndService} dndService drag-and-drop service
+         */
+        function MCTResourceGraphDrop(dndService) {
+
+            function link(scope, element, attrs) {
+                // Handle dragover
+                element.on('dragover', function (e) {
+                    var swimlane = dndService.getData(
+                        SwimlaneDragConstants.TIMELINE_SWIMLANE_DRAG_TYPE
+                    );
+
+                    if (typeof swimlane !== "undefined" && !swimlane.graph()) {
+                        element.addClass('drop-over');
+                        scope.$apply();
+                        e.preventDefault();
+                    }
+                });
+                // Handle drops
+                element.on('drop', function (e) {
+                    var swimlane = dndService.getData(
+                        SwimlaneDragConstants.TIMELINE_SWIMLANE_DRAG_TYPE
+                    );
+
+                    element.removeClass('drop-over');
+
+                    // Only toggle if the graph isn't already set
+                    if (typeof swimlane !== "undefined" && !swimlane.graph()) {
+                        swimlane.toggleGraph();
+                        e.preventDefault();
+                    }
+                });
+                // Clear highlights when drag leaves this swimlane
+                element.on('dragleave', function (e) {
+                    element.removeClass('drop-over');
+                    scope.$apply();
+                    e.preventDefault();
+                });
+            }
+
+            return {
+                // Applies to attributes
+                restrict: "A",
+                // Link using above function
+                link: link
+            };
+        }
+
+        return MCTResourceGraphDrop;
+    }
+);

platform/features/timeline/test/controllers/TimelineTOIControllerSpec.js

@@ -0,0 +1,138 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define([
+    "../../src/controllers/TimelineTOIController",
+    "EventEmitter"
+], function (TimelineTOIController, EventEmitter) {
+    describe("The timeline TOI controller", function () {
+        var mockmct;
+        var mockTimerService;
+        var mockScope;
+        var controller;
+
+        beforeEach(function () {
+            mockmct = { time: new EventEmitter() };
+            mockmct.time.bounds = jasmine.createSpy('bounds');
+            mockTimerService = new EventEmitter();
+            mockTimerService.getTimer = jasmine.createSpy('getTimer');
+            mockTimerService.hasTimer = jasmine.createSpy('hasTimer');
+            mockTimerService.now = jasmine.createSpy('now');
+            mockTimerService.convert = jasmine.createSpy('convert');
+            mockScope = new EventEmitter();
+            mockScope.$on = mockScope.on.bind(mockScope);
+            mockScope.zoomController = jasmine.createSpyObj('zoom', [
+                'bounds',
+                'toPixels'
+            ]);
+            mockScope.scroll = { x: 10, width: 1000 };
+
+            spyOn(mockmct.time, "on").andCallThrough();
+            spyOn(mockmct.time, "off").andCallThrough();
+            spyOn(mockTimerService, "on").andCallThrough();
+            spyOn(mockTimerService, "off").andCallThrough();
+
+            controller = new TimelineTOIController(
+                mockmct,
+                mockTimerService,
+                mockScope
+            );
+        });
+
+        it("reports an undefined x position initially", function () {
+            expect(controller.x()).toBeUndefined();
+        });
+
+        it("listens for bounds changes", function () {
+            expect(mockmct.time.on)
+                .toHaveBeenCalledWith('bounds', controller.bounds);
+        });
+
+        it("listens for timer changes", function () {
+            expect(mockTimerService.on)
+                .toHaveBeenCalledWith('change', controller.change);
+        });
+
+        it("is not active", function () {
+            expect(controller.isActive()).toBe(false);
+        });
+
+        describe("on $destroy from scope", function () {
+            beforeEach(function () {
+                mockScope.emit("$destroy");
+            });
+
+            it("unregisters listeners", function () {
+                expect(mockmct.time.off)
+                    .toHaveBeenCalledWith('bounds', controller.bounds);
+                expect(mockTimerService.off)
+                    .toHaveBeenCalledWith('change', controller.change);
+            });
+        });
+
+        describe("when a timer and timestamp present", function () {
+            var mockTimer;
+            var testNow;
+
+            beforeEach(function () {
+                testNow = 333221;
+                mockScope.zoomController.toPixels
+                    .andCallFake(function (millis) {
+                        return millis * 2;
+                    });
+                mockTimerService.emit('change', mockTimer);
+                mockTimerService.now.andReturn(testNow);
+            });
+
+            it("reports an x value from the zoomController", function () {
+                var now = mockTimerService.now();
+                var expected = mockScope.zoomController.toPixels(now);
+                expect(controller.x()).toEqual(expected);
+            });
+        });
+
+        describe("when follow mode is disabled", function () {
+            beforeEach(function () {
+                mockScope.scroll.follow = false;
+            });
+
+            it("ignores bounds events", function () {
+                mockmct.time.emit('bounds', { start: 0, end: 1000 });
+                expect(mockScope.zoomController.bounds)
+                    .not.toHaveBeenCalled();
+            });
+        });
+
+        describe("when follow mode is enabled", function () {
+            beforeEach(function () {
+                mockScope.scroll.follow = true;
+                mockTimerService.now.andReturn(500);
+            });
+
+            it("zooms on bounds events", function () {
+                mockmct.time.emit('bounds', { start: 0, end: 1000 });
+                expect(mockScope.zoomController.bounds)
+                    .toHaveBeenCalled();
+            });
+        });
+    });
+});

platform/features/timeline/test/directives/MCTResourceGraphDropSpec.js

@@ -0,0 +1,159 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define(
+    ['../../src/directives/MCTResourceGraphDrop', '../../src/directives/SwimlaneDragConstants'],
+    function (MCTResourceGraphDrop, SwimlaneDragConstants) {
+
+        describe("The mct-resource-graph-drop directive", function () {
+            var mockDndService,
+                mockScope,
+                mockElement,
+                testAttrs,
+                mockSwimlane,
+                testEvent,
+                handlers,
+                directive;
+
+            beforeEach(function () {
+                handlers = {};
+
+                mockDndService = jasmine.createSpyObj(
+                    'dndService',
+                    ['setData', 'getData', 'removeData']
+                );
+                mockScope = jasmine.createSpyObj('$scope', ['$eval', '$apply']);
+                mockElement = jasmine.createSpyObj('element', ['on', 'addClass', 'removeClass']);
+                testAttrs = { mctSwimlaneDrop: "mockSwimlane" };
+                mockSwimlane = jasmine.createSpyObj(
+                    "swimlane",
+                    ['graph', 'toggleGraph']
+                );
+
+                testEvent = {
+                    dataTransfer: { getData: jasmine.createSpy() },
+                    preventDefault: jasmine.createSpy(),
+                    stopPropagation: jasmine.createSpy()
+                };
+
+                testEvent.dataTransfer.getData.andReturn('abc');
+                mockDndService.getData.andCallFake(function (key) {
+                    return key === SwimlaneDragConstants.TIMELINE_SWIMLANE_DRAG_TYPE ?
+                        mockSwimlane : undefined;
+                });
+
+                mockSwimlane.graph.andReturn(false);
+
+                directive = new MCTResourceGraphDrop(mockDndService);
+                directive.link(mockScope, mockElement, testAttrs);
+
+                mockElement.on.calls.forEach(function (call) {
+                    handlers[call.args[0]] = call.args[1];
+                });
+            });
+
+            it("is available as an attribute", function () {
+                expect(directive.restrict).toEqual("A");
+            });
+
+            [false, true].forEach(function (graphing) {
+                describe("when swimlane graph is " + (graphing ? "" : "not ") + "enabled", function () {
+                    beforeEach(function () {
+                        mockSwimlane.graph.andReturn(graphing);
+                    });
+
+
+                    describe("on dragover", function () {
+                        var prefix = !graphing ? "does" : "does not";
+
+                        beforeEach(function ()  {
+                            handlers.dragover(testEvent);
+                        });
+
+                        it(prefix + " add a drop-over class", function () {
+                            var expectAddClass = expect(mockElement.addClass);
+                            (!graphing ? expectAddClass : expectAddClass.not)
+                                .toHaveBeenCalledWith('drop-over');
+                        });
+
+                        it(prefix + " call $apply on scope", function () {
+                            var expectApply = expect(mockScope.$apply);
+                            (!graphing ? expectApply : expectApply.not)
+                                .toHaveBeenCalled();
+                        });
+
+                        it(prefix + " prevent default", function () {
+                            var expectPreventDefault = expect(testEvent.preventDefault);
+                            (!graphing ? expectPreventDefault : expectPreventDefault.not)
+                                .toHaveBeenCalled();
+                        });
+                    });
+
+                    describe("on drop", function () {
+                        var prefix = !graphing ? "does" : "does not";
+
+                        beforeEach(function ()  {
+                            handlers.drop(testEvent);
+                        });
+
+                        it("removes any drop-over class", function () {
+                            expect(mockElement.removeClass)
+                                .toHaveBeenCalledWith('drop-over');
+                        });
+
+                        it(prefix + " toggle the swimlane's resource graph", function () {
+                            var expectToggle = expect(mockSwimlane.toggleGraph);
+                            (!graphing ? expectToggle : expectToggle.not)
+                                .toHaveBeenCalled();
+                        });
+
+                        it(prefix + " prevent default", function () {
+                            var expectPreventDefault = expect(testEvent.preventDefault);
+                            (!graphing ? expectPreventDefault : expectPreventDefault.not)
+                                .toHaveBeenCalled();
+                        });
+                    });
+
+                    describe("on dragleave", function () {
+                        beforeEach(function ()  {
+                            handlers.dragleave(testEvent);
+                        });
+
+                        it("removes any drop-over class", function () {
+                            expect(mockElement.removeClass)
+                                .toHaveBeenCalledWith('drop-over');
+                        });
+
+                        it("calls $apply on scope", function () {
+                            expect(mockScope.$apply).toHaveBeenCalled();
+                        });
+
+                        it("calls preventDefault on events", function () {
+                            expect(testEvent.preventDefault).toHaveBeenCalled();
+                        });
+                    });
+                });
+            });
+
+        });
+    }
+);

platform/forms/res/templates/controls/composite.html

@@ -27,7 +27,7 @@
                          ng-required="ngRequired || compositeCtrl.isNonEmpty(ngModel[field])"
                          ng-pattern="ngPattern"
                          options="item.options"
-                         structure="row"
+                         structure="item"
                          field="$index">
             </mct-control>
             <span class="composite-control-label">

src/api/objects/ObjectAPI.js

@@ -50,11 +50,18 @@ define([
         this.rootProvider = new RootObjectProvider(this.rootRegistry);
     }
 
+    /**
+     * Set fallback provider, this is an internal API for legacy reasons.
+     * @private
+     */
     ObjectAPI.prototype.supersecretSetFallbackProvider = function (p) {
         this.fallbackProvider = p;
     };
 
-    // Retrieve the provider for a given key.
+    /**
+     * Retrieve the provider for a given identifier.
+     * @private
+     */
     ObjectAPI.prototype.getProvider = function (identifier) {
         if (identifier.key === 'ROOT') {
             return this.rootProvider;
@@ -135,27 +142,28 @@ define([
      * @returns {Promise} a promise which will resolve when the domain object
      *          has been saved, or be rejected if it cannot be saved
      */
+    ObjectAPI.prototype.get = function (identifier) {
+        identifier = utils.parseKeyString(identifier);
+        var provider = this.getProvider(identifier);
 
-    [
-        'save',
-        'delete',
-        'get'
-    ].forEach(function (method) {
-        ObjectAPI.prototype[method] = function () {
-            var identifier = arguments[0],
-                provider = this.getProvider(identifier);
+        if (!provider) {
+            throw new Error('No Provider Matched');
+        }
 
-            if (!provider) {
-                throw new Error('No Provider Matched');
-            }
+        if (!provider.get) {
+            throw new Error('Provider does not support get!');
+        }
 
-            if (!provider[method]) {
-                throw new Error('Provider does not support [' + method + '].');
-            }
+        return provider.get(identifier);
+    };
 
-            return provider[method].apply(provider, arguments);
-        };
-    });
+    ObjectAPI.prototype.delete = function () {
+        throw new Error('Delete not implemented');
+    };
+
+    ObjectAPI.prototype.save = function () {
+        throw new Error('Save not implemented');
+    };
 
     /**
      * Add a root-level object.

src/plugins/plugins.js

@@ -27,7 +27,8 @@ define([
     '../../platform/features/autoflow/plugin',
     './timeConductor/plugin',
     '../../example/imagery/plugin',
-    '../../platform/import-export/bundle'
+    '../../platform/import-export/bundle',
+    './telemetryMean/plugin'
 ], function (
     _,
     UTCTimeSystem,
@@ -35,7 +36,8 @@ define([
     AutoflowPlugin,
     TimeConductorPlugin,
     ExampleImagery,
-    ImportExport
+    ImportExport,
+    TelemetryMean
 ) {
     var bundleMap = {
         CouchDB: 'platform/persistence/couch',
@@ -120,6 +122,7 @@ define([
     };
 
     plugins.ExampleImagery = ExampleImagery;
+    plugins.TelemetryMean = TelemetryMean;
 
     return plugins;
 });

src/plugins/telemetryMean/plugin.js

@@ -0,0 +1,76 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2017, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define(['./src/MeanTelemetryProvider'], function (MeanTelemetryProvider) {
+    var DEFAULT_SAMPLES = 10;
+
+    function plugin() {
+        return function install(openmct) {
+            openmct.types.addType('telemetry-mean', {
+                name: 'Telemetry Mean',
+                description: 'Provides telemetry values that represent the mean of the last N values of a telemetry stream',
+                creatable: true,
+                cssClass: 'icon-telemetry',
+                initialize: function (domainObject) {
+                    domainObject.samples = DEFAULT_SAMPLES;
+                    domainObject.telemetry = {};
+                    domainObject.telemetry.values =
+                        openmct.time.getAllTimeSystems().map(function (timeSystem, index) {
+                            return {
+                                key: timeSystem.key,
+                                name: timeSystem.name,
+                                hints: {
+                                    domain: index + 1
+                                }
+                            };
+                        });
+                    domainObject.telemetry.values.push({
+                        key: "value",
+                        name: "Value",
+                        hints: {
+                            range: 1
+                        }
+                    });
+                },
+                form: [
+                    {
+                        "key": "telemetryPoint",
+                        "name": "Telemetry Point",
+                        "control": "textfield",
+                        "required": true,
+                        "cssClass": "l-input-lg"
+                    },
+                    {
+                        "key": "samples",
+                        "name": "Samples to Average",
+                        "control": "textfield",
+                        "required": true,
+                        "cssClass": "l-input-sm"
+                    }
+                ]
+            });
+            openmct.telemetry.addProvider(new MeanTelemetryProvider(openmct));
+        };
+    }
+
+    return plugin;
+});

src/plugins/telemetryMean/src/MeanTelemetryProvider.js

@@ -0,0 +1,125 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2017, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*jshint latedef: nofunc */
+/*global console */
+define([
+    '../../../api/objects/object-utils',
+    './TelemetryAverager'
+], function (objectUtils, TelemetryAverager) {
+
+    function MeanTelemetryProvider(openmct) {
+        this.openmct = openmct;
+        this.telemetryAPI = openmct.telemetry;
+        this.timeAPI = openmct.time;
+        this.objectAPI = openmct.objects;
+        this.perObjectProviders = {};
+    }
+
+    MeanTelemetryProvider.prototype.canProvideTelemetry = function (domainObject) {
+        return domainObject.type === 'telemetry-mean';
+    };
+
+    MeanTelemetryProvider.prototype.supportsRequest =
+        MeanTelemetryProvider.prototype.supportsSubscribe =
+            MeanTelemetryProvider.prototype.canProvideTelemetry;
+
+    MeanTelemetryProvider.prototype.subscribe = function (domainObject, callback) {
+        var wrappedUnsubscribe;
+        var unsubscribeCalled = false;
+        var objectId = objectUtils.parseKeyString(domainObject.telemetryPoint);
+        var samples = domainObject.samples;
+
+        this.objectAPI.get(objectId)
+            .then(function (linkedDomainObject) {
+                if (!unsubscribeCalled) {
+                    wrappedUnsubscribe = this.subscribeToAverage(linkedDomainObject, samples, callback);
+                }
+            }.bind(this))
+            .catch(logError);
+
+        return function unsubscribe() {
+            unsubscribeCalled = true;
+            if (wrappedUnsubscribe !== undefined) {
+                wrappedUnsubscribe();
+            }
+        };
+    };
+
+    MeanTelemetryProvider.prototype.subscribeToAverage = function (domainObject, samples, callback) {
+        var telemetryAverager = new TelemetryAverager(this.telemetryAPI, this.timeAPI, domainObject, samples);
+
+        return this.telemetryAPI.subscribe(domainObject, function (telemetryDatum) {
+            var avgData = telemetryAverager.createAverageDatum(telemetryDatum);
+
+            if (telemetryAverager.sampleCount() === samples) {
+                callback(avgData);
+            }
+        }.bind(this));
+    };
+
+    MeanTelemetryProvider.prototype.request = function (domainObject, request) {
+        var objectId = objectUtils.parseKeyString(domainObject.telemetryPoint);
+        var samples = domainObject.samples;
+
+        return this.objectAPI.get(objectId).then(function (linkedDomainObject) {
+            return this.requestAverageTelemetry(linkedDomainObject, request, samples);
+        }.bind(this));
+    };
+
+    /**
+     * @private
+     */
+    MeanTelemetryProvider.prototype.requestAverageTelemetry = function (domainObject, request, samples) {
+        var averageData = [];
+        var telemetryAverager = new TelemetryAverager(this.telemetryAPI, this.timeAPI, domainObject, samples);
+
+        return this.telemetryAPI.request(domainObject, request).then(function (telemetryData) {
+            telemetryData.forEach(function (datum) {
+                var avgDatum = telemetryAverager.createAverageDatum(datum);
+
+                if (telemetryAverager.sampleCount() === samples) {
+                    averageData.push(avgDatum);
+                }
+            }.bind(this));
+
+            return averageData;
+        }.bind(this));
+    };
+
+    /**
+     * @private
+     */
+    MeanTelemetryProvider.prototype.getLinkedObject = function (domainObject) {
+        var objectId = objectUtils.parseKeyString(domainObject.telemetryPoint);
+        return this.objectAPI.get(objectId);
+    };
+
+    function logError(error) {
+        if (error.stack) {
+            console.error(error.stack);
+        } else {
+            console.error(error);
+        }
+    }
+
+    return MeanTelemetryProvider;
+});

src/plugins/telemetryMean/src/MeanTelemetryProviderSpec.js

@@ -0,0 +1,460 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2014-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*jshint latedef: nofunc */
+define([
+    "./MeanTelemetryProvider",
+    "./MockTelemetryApi"
+], function (
+    MeanTelemetryProvider,
+    MockTelemetryApi
+) {
+    var RANGE_KEY = 'value';
+
+    describe("The Mean Telemetry Provider", function () {
+        var mockApi;
+        var meanTelemetryProvider;
+        var outstandingPromises = 0;
+        var mockDomainObject;
+        var associatedObject;
+
+        beforeEach(function () {
+            createMockApi();
+            setTimeSystemTo('utc');
+            createMockObjects();
+            meanTelemetryProvider = new MeanTelemetryProvider(mockApi);
+        });
+
+        it("supports telemetry-mean objects only", function () {
+            var mockTelemetryMeanObject = mockObjectWithType('telemetry-mean');
+            var mockOtherObject = mockObjectWithType('other');
+
+            expect(meanTelemetryProvider.canProvideTelemetry(mockTelemetryMeanObject)).toBe(true);
+            expect(meanTelemetryProvider.canProvideTelemetry(mockOtherObject)).toBe(false);
+        });
+
+        describe("the subscribe function", function () {
+            var subscriptionCallback;
+
+            beforeEach(function () {
+                subscriptionCallback = jasmine.createSpy('subscriptionCallback');
+            });
+
+            it("subscribes to telemetry for the associated object", function () {
+                meanTelemetryProvider.subscribe(mockDomainObject);
+
+                expectObjectWasSubscribedTo(associatedObject);
+            });
+
+            it("returns a function that unsubscribes from the associated object", function () {
+                var unsubscribe = meanTelemetryProvider.subscribe(mockDomainObject);
+
+                waitsFor(allPromisesToBeResolved);
+                runs(unsubscribe);
+
+                expectUnsubscribeFrom(associatedObject);
+            });
+
+            it("returns an average only when the sample size is reached", function () {
+                var inputTelemetry = [
+                    {'utc': 1, 'defaultRange': 123.1231},
+                    {'utc': 2, 'defaultRange': 321.3223},
+                    {'utc': 3, 'defaultRange': 111.4446},
+                    {'utc': 4, 'defaultRange': 555.2313}
+                ];
+
+                setSampleSize(5);
+                meanTelemetryProvider.subscribe(mockDomainObject, subscriptionCallback);
+                feedInputTelemetry(inputTelemetry);
+
+                expectNoAverageForTelemetry(inputTelemetry);
+            });
+
+            it("correctly averages a sample of five values", function () {
+                var inputTelemetry = [
+                    {'utc': 1, 'defaultRange': 123.1231},
+                    {'utc': 2, 'defaultRange': 321.3223},
+                    {'utc': 3, 'defaultRange': 111.4446},
+                    {'utc': 4, 'defaultRange': 555.2313},
+                    {'utc': 5, 'defaultRange': 1.1231}
+                ];
+                var expectedAverages = [{
+                    'utc': 5, 'value': 222.44888
+                }];
+
+                setSampleSize(5);
+                meanTelemetryProvider.subscribe(mockDomainObject, subscriptionCallback);
+                feedInputTelemetry(inputTelemetry);
+
+                expectAveragesForTelemetry(expectedAverages, inputTelemetry);
+            });
+
+            it("correctly averages a sample of ten values", function () {
+                var inputTelemetry = [
+                    {'utc': 1, 'defaultRange': 123.1231},
+                    {'utc': 2, 'defaultRange': 321.3223},
+                    {'utc': 3, 'defaultRange': 111.4446},
+                    {'utc': 4, 'defaultRange': 555.2313},
+                    {'utc': 5, 'defaultRange': 1.1231},
+                    {'utc': 6, 'defaultRange': 2323.12},
+                    {'utc': 7, 'defaultRange': 532.12},
+                    {'utc': 8, 'defaultRange': 453.543},
+                    {'utc': 9, 'defaultRange': 89.2111},
+                    {'utc': 10, 'defaultRange': 0.543}
+                ];
+                var expectedAverages = [{
+                    'utc': 10, 'value': 451.07815
+                }];
+
+                setSampleSize(10);
+                meanTelemetryProvider.subscribe(mockDomainObject, subscriptionCallback);
+                feedInputTelemetry(inputTelemetry);
+
+                expectAveragesForTelemetry(expectedAverages, inputTelemetry);
+            });
+
+            it("only averages values within its sample window", function () {
+                var inputTelemetry = [
+                    {'utc': 1, 'defaultRange': 123.1231},
+                    {'utc': 2, 'defaultRange': 321.3223},
+                    {'utc': 3, 'defaultRange': 111.4446},
+                    {'utc': 4, 'defaultRange': 555.2313},
+                    {'utc': 5, 'defaultRange': 1.1231},
+                    {'utc': 6, 'defaultRange': 2323.12},
+                    {'utc': 7, 'defaultRange': 532.12},
+                    {'utc': 8, 'defaultRange': 453.543},
+                    {'utc': 9, 'defaultRange': 89.2111},
+                    {'utc': 10, 'defaultRange': 0.543}
+                ];
+                var expectedAverages = [
+                    {'utc': 5, 'value': 222.44888},
+                    {'utc': 6, 'value': 662.4482599999999},
+                    {'utc': 7, 'value': 704.6078},
+                    {'utc': 8, 'value': 773.02748},
+                    {'utc': 9, 'value': 679.8234399999999},
+                    {'utc': 10, 'value': 679.70742}
+                ];
+
+                setSampleSize(5);
+                meanTelemetryProvider.subscribe(mockDomainObject, subscriptionCallback);
+                feedInputTelemetry(inputTelemetry);
+
+                expectAveragesForTelemetry(expectedAverages, inputTelemetry);
+            });
+            describe("given telemetry input with range values", function () {
+                var inputTelemetry;
+
+                beforeEach(function () {
+                    inputTelemetry = [{
+                        'utc': 1,
+                        'rangeKey': 5678,
+                        'otherKey': 9999
+                    }];
+                    setSampleSize(1);
+                });
+                it("uses the 'rangeKey' input range, when it is the default, to calculate the average", function () {
+                    var averageTelemetryForRangeKey = [{
+                        'utc': 1,
+                        'value': 5678
+                    }];
+
+                    meanTelemetryProvider.subscribe(mockDomainObject, subscriptionCallback);
+                    mockApi.telemetry.setDefaultRangeTo('rangeKey');
+                    feedInputTelemetry(inputTelemetry);
+
+                    expectAveragesForTelemetry(averageTelemetryForRangeKey, inputTelemetry);
+                });
+
+                it("uses the 'otherKey' input range, when it is the default, to calculate the average", function () {
+                    var averageTelemetryForOtherKey = [{
+                        'utc': 1,
+                        'value': 9999
+                    }];
+
+                    meanTelemetryProvider.subscribe(mockDomainObject, subscriptionCallback);
+                    mockApi.telemetry.setDefaultRangeTo('otherKey');
+                    feedInputTelemetry(inputTelemetry);
+
+                    expectAveragesForTelemetry(averageTelemetryForOtherKey, inputTelemetry);
+
+                });
+            });
+            describe("given telemetry input with range values", function () {
+                var inputTelemetry;
+
+                beforeEach(function () {
+                    inputTelemetry = [{
+                        'utc': 1,
+                        'rangeKey': 5678,
+                        'otherKey': 9999
+                    }];
+                    setSampleSize(1);
+                });
+                it("uses the 'rangeKey' input range, when it is the default, to calculate the average", function () {
+                    var averageTelemetryForRangeKey = [{
+                        'utc': 1,
+                        'value': 5678
+                    }];
+
+                    meanTelemetryProvider.subscribe(mockDomainObject, subscriptionCallback);
+                    mockApi.telemetry.setDefaultRangeTo('rangeKey');
+                    feedInputTelemetry(inputTelemetry);
+
+                    expectAveragesForTelemetry(averageTelemetryForRangeKey, inputTelemetry);
+                });
+
+                it("uses the 'otherKey' input range, when it is the default, to calculate the average", function () {
+                    var averageTelemetryForOtherKey = [{
+                        'utc': 1,
+                        'value': 9999
+                    }];
+
+                    meanTelemetryProvider.subscribe(mockDomainObject, subscriptionCallback);
+                    mockApi.telemetry.setDefaultRangeTo('otherKey');
+                    feedInputTelemetry(inputTelemetry);
+
+                    expectAveragesForTelemetry(averageTelemetryForOtherKey, inputTelemetry);
+                });
+            });
+
+            function feedInputTelemetry(inputTelemetry) {
+                waitsFor(allPromisesToBeResolved);
+                runs(function () {
+                    inputTelemetry.forEach(mockApi.telemetry.mockReceiveTelemetry);
+                });
+            }
+
+            function expectNoAverageForTelemetry(inputTelemetry) {
+                waitsFor(allPromisesToBeResolved);
+                runs(function () {
+                    expect(subscriptionCallback).not.toHaveBeenCalled();
+                });
+            }
+
+            function expectAveragesForTelemetry(expectedAverages) {
+                waitsFor(allPromisesToBeResolved);
+                runs(function () {
+                    expectedAverages.forEach(function (averageDatum) {
+                        expect(subscriptionCallback).toHaveBeenCalledWith(averageDatum);
+                    });
+                });
+            }
+
+            function expectObjectWasSubscribedTo(object) {
+                waitsFor(allPromisesToBeResolved);
+                runs(function () {
+                    expect(mockApi.telemetry.subscribe).toHaveBeenCalledWith(object, jasmine.any(Function));
+                });
+            }
+
+            function expectUnsubscribeFrom() {
+                waitsFor(allPromisesToBeResolved);
+                runs(function () {
+                    expect(mockApi.telemetry.unsubscribe).toHaveBeenCalled();
+                });
+            }
+
+        });
+
+        describe("the request function", function () {
+
+            it("requests telemetry for the associated object", function () {
+                meanTelemetryProvider.request(mockDomainObject);
+
+                expectTelemetryToBeRequestedFor(associatedObject);
+            });
+
+            it("returns an average only when the sample size is reached", function () {
+                var inputTelemetry = [
+                    {'utc': 1, 'defaultRange': 123.1231},
+                    {'utc': 2, 'defaultRange': 321.3223},
+                    {'utc': 3, 'defaultRange': 111.4446},
+                    {'utc': 4, 'defaultRange': 555.2313}
+                ];
+                var promiseForAverage;
+
+                setSampleSize(5);
+                whenTelemetryRequestedReturn(inputTelemetry);
+                promiseForAverage = meanTelemetryProvider.request(mockDomainObject);
+
+                expectEmptyResponse(promiseForAverage);
+            });
+
+            it("correctly averages a sample of five values", function () {
+                var inputTelemetry = [
+                    {'utc': 1, 'defaultRange': 123.1231},
+                    {'utc': 2, 'defaultRange': 321.3223},
+                    {'utc': 3, 'defaultRange': 111.4446},
+                    {'utc': 4, 'defaultRange': 555.2313},
+                    {'utc': 5, 'defaultRange': 1.1231}
+                ];
+                var promiseForAverage;
+
+                setSampleSize(5);
+                whenTelemetryRequestedReturn(inputTelemetry);
+                promiseForAverage = meanTelemetryProvider.request(mockDomainObject);
+
+                expectAverageToBe(222.44888, promiseForAverage);
+            });
+
+            it("correctly averages a sample of ten values", function () {
+                var inputTelemetry = [
+                    {'utc': 1, 'defaultRange': 123.1231},
+                    {'utc': 2, 'defaultRange': 321.3223},
+                    {'utc': 3, 'defaultRange': 111.4446},
+                    {'utc': 4, 'defaultRange': 555.2313},
+                    {'utc': 5, 'defaultRange': 1.1231},
+                    {'utc': 6, 'defaultRange': 2323.12},
+                    {'utc': 7, 'defaultRange': 532.12},
+                    {'utc': 8, 'defaultRange': 453.543},
+                    {'utc': 9, 'defaultRange': 89.2111},
+                    {'utc': 10, 'defaultRange': 0.543}
+                ];
+                var promiseForAverage;
+
+                setSampleSize(10);
+                whenTelemetryRequestedReturn(inputTelemetry);
+                promiseForAverage = meanTelemetryProvider.request(mockDomainObject);
+
+                expectAverageToBe(451.07815, promiseForAverage);
+            });
+
+            it("only averages values within its sample window", function () {
+                var inputTelemetry = [
+                    {'utc': 1, 'defaultRange': 123.1231},
+                    {'utc': 2, 'defaultRange': 321.3223},
+                    {'utc': 3, 'defaultRange': 111.4446},
+                    {'utc': 4, 'defaultRange': 555.2313},
+                    {'utc': 5, 'defaultRange': 1.1231},
+                    {'utc': 6, 'defaultRange': 2323.12},
+                    {'utc': 7, 'defaultRange': 532.12},
+                    {'utc': 8, 'defaultRange': 453.543},
+                    {'utc': 9, 'defaultRange': 89.2111},
+                    {'utc': 10, 'defaultRange': 0.543}
+                ];
+                var promiseForAverage;
+
+                setSampleSize(5);
+                whenTelemetryRequestedReturn(inputTelemetry);
+                promiseForAverage = meanTelemetryProvider.request(mockDomainObject);
+
+                expectAverageToBe(679.70742, promiseForAverage);
+            });
+
+            function expectAverageToBe(expectedValue, promiseForAverage) {
+                var averageData;
+
+                promiseForAverage.then(function (data) {
+                    averageData = data;
+                });
+
+                waitsFor(function () {
+                    return averageData !== undefined;
+                }, 'data to return from request', 1);
+                runs(function () {
+                    var averageDatum = averageData[averageData.length - 1];
+                    expect(averageDatum[RANGE_KEY]).toBe(expectedValue);
+                });
+            }
+
+            function expectEmptyResponse(promiseForAverage) {
+                var averageData;
+
+                promiseForAverage.then(function (data) {
+                    averageData = data;
+                });
+
+                waitsFor(function () {
+                    return averageData !== undefined;
+                }, 'data to return from request', 1);
+                runs(function () {
+                    expect(averageData.length).toBe(0);
+                });
+            }
+
+            function whenTelemetryRequestedReturn(telemetry) {
+                mockApi.telemetry.request.andReturn(resolvePromiseWith(telemetry));
+            }
+
+            function expectTelemetryToBeRequestedFor(object) {
+                waitsFor(allPromisesToBeResolved);
+                runs(function () {
+                    expect(mockApi.telemetry.request).toHaveBeenCalledWith(object, undefined);
+                });
+            }
+        });
+
+        function createMockObjects() {
+            mockDomainObject = {
+                telemetryPoint: 'someTelemetryPoint'
+            };
+            associatedObject = {};
+            mockApi.objects.get.andReturn(resolvePromiseWith(associatedObject));
+        }
+
+        function setSampleSize(sampleSize) {
+            mockDomainObject.samples = sampleSize;
+        }
+
+        function createMockApi() {
+            mockApi = {
+                telemetry: new MockTelemetryApi(),
+                objects: createMockObjectApi(),
+                time: createMockTimeApi()
+            };
+        }
+
+        function createMockObjectApi() {
+            return jasmine.createSpyObj('ObjectAPI', [
+                'get'
+            ]);
+        }
+
+        function mockObjectWithType(type) {
+            return {
+                type: type
+            };
+        }
+
+        function resolvePromiseWith(value) {
+            outstandingPromises++;
+            return Promise.resolve(value).then(function () {
+                outstandingPromises--;
+                return value;
+            });
+        }
+
+        function allPromisesToBeResolved() {
+            return outstandingPromises === 0;
+        }
+
+        function createMockTimeApi() {
+            return jasmine.createSpyObj("timeApi", ['timeSystem']);
+        }
+
+        function setTimeSystemTo(timeSystemKey) {
+            mockApi.time.timeSystem.andReturn({
+                key: timeSystemKey
+            });
+        }
+    });
+
+});

src/plugins/telemetryMean/src/MockTelemetryApi.js

@@ -0,0 +1,106 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2017, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global jasmine, spyOn */
+define([], function () {
+
+    function MockTelemetryApi() {
+        this.createSpy('subscribe');
+        this.createSpy('getMetadata');
+
+        this.metadata = this.createMockMetadata();
+        this.setDefaultRangeTo('defaultRange');
+        this.unsubscribe = jasmine.createSpy('unsubscribe');
+        this.mockReceiveTelemetry = this.mockReceiveTelemetry.bind(this);
+    }
+
+    MockTelemetryApi.prototype.subscribe = function () {
+        return this.unsubscribe;
+    };
+
+    MockTelemetryApi.prototype.getMetadata = function (object) {
+        return this.metadata;
+    };
+
+    MockTelemetryApi.prototype.request = jasmine.createSpy('request');
+
+    MockTelemetryApi.prototype.getValueFormatter = function (valueMetadata) {
+        var mockValueFormatter = jasmine.createSpyObj("valueFormatter", [
+            "parse"
+        ]);
+
+        mockValueFormatter.parse.andCallFake(function (value) {
+            return value[valueMetadata.key];
+        });
+
+        return mockValueFormatter;
+    };
+
+    MockTelemetryApi.prototype.mockReceiveTelemetry = function (newTelemetryDatum) {
+        var subscriptionCallback = this.subscribe.mostRecentCall.args[1];
+        subscriptionCallback(newTelemetryDatum);
+    };
+
+    /**
+     * @private
+     */
+    MockTelemetryApi.prototype.onRequestReturn = function (telemetryData) {
+        this.requestTelemetry = telemetryData;
+    };
+
+    /**
+     * @private
+     */
+    MockTelemetryApi.prototype.setDefaultRangeTo = function (rangeKey) {
+        var mockMetadataValue = {
+            key: rangeKey
+        };
+        this.metadata.valuesForHints.andReturn([mockMetadataValue]);
+    };
+
+    /**
+     * @private
+     */
+    MockTelemetryApi.prototype.createMockMetadata = function () {
+        var mockMetadata = jasmine.createSpyObj("metadata", [
+            'value',
+            'valuesForHints'
+        ]);
+
+        mockMetadata.value.andCallFake(function (key) {
+            return {
+                key: key
+            };
+        });
+        return mockMetadata;
+    };
+
+    /**
+     * @private
+     */
+    MockTelemetryApi.prototype.createSpy = function (functionName) {
+        this[functionName] = this[functionName].bind(this);
+        spyOn(this, functionName);
+        this[functionName].andCallThrough();
+    };
+
+    return MockTelemetryApi;
+});

src/plugins/telemetryMean/src/TelemetryAverager.js

@@ -0,0 +1,112 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2017, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+define([], function () {
+
+    function TelemetryAverager(telemetryAPI, timeAPI, domainObject, samples) {
+        this.telemetryAPI = telemetryAPI;
+        this.timeAPI = timeAPI;
+
+        this.domainObject = domainObject;
+        this.samples = samples;
+        this.averagingWindow = [];
+
+        this.rangeKey = undefined;
+        this.rangeFormatter = undefined;
+        this.setRangeKeyAndFormatter();
+
+        // Defined dynamically based on current time system
+        this.domainKey = undefined;
+        this.domainFormatter = undefined;
+    }
+
+    TelemetryAverager.prototype.createAverageDatum = function (telemetryDatum) {
+        this.setDomainKeyAndFormatter();
+
+        var timeValue = this.domainFormatter.parse(telemetryDatum);
+        var rangeValue = this.rangeFormatter.parse(telemetryDatum);
+
+        this.averagingWindow.push(rangeValue);
+        if (this.averagingWindow.length > this.samples) {
+            this.averagingWindow.shift();
+        }
+        var averageValue = this.calculateMean();
+
+        var meanDatum = {};
+        meanDatum[this.domainKey] = timeValue;
+        meanDatum.value = averageValue;
+
+        return meanDatum;
+    };
+
+    /**
+     * @private
+     */
+    TelemetryAverager.prototype.calculateMean = function () {
+        var sum = 0;
+        var i = 0;
+
+        for (; i < this.averagingWindow.length; i++) {
+            sum += this.averagingWindow[i];
+        }
+
+        return sum / this.averagingWindow.length;
+    };
+
+    /**
+     * @private
+     */
+    TelemetryAverager.prototype.setDomainKeyAndFormatter = function () {
+        var domainKey = this.timeAPI.timeSystem().key;
+        if (domainKey !== this.domainKey) {
+            this.domainKey = domainKey;
+            this.domainFormatter = this.getFormatter(domainKey);
+        }
+    };
+
+    /**
+     * @private
+     */
+    TelemetryAverager.prototype.setRangeKeyAndFormatter = function () {
+        var metadatas = this.telemetryAPI.getMetadata(this.domainObject);
+        var rangeValues = metadatas.valuesForHints(['range']);
+
+        this.rangeKey = rangeValues[0].key;
+        this.rangeFormatter = this.getFormatter(this.rangeKey);
+    };
+
+    /**
+     * @private
+     */
+    TelemetryAverager.prototype.getFormatter = function (key) {
+        var objectMetadata = this.telemetryAPI.getMetadata(this.domainObject);
+        var valueMetadata = objectMetadata.value(key);
+
+        return this.telemetryAPI.getValueFormatter(valueMetadata);
+    };
+
+    TelemetryAverager.prototype.sampleCount = function () {
+        return this.averagingWindow.length;
+    };
+
+    return TelemetryAverager;
+});

test-main.js

@@ -59,7 +59,7 @@ requirejs.config({
         "moment": "bower_components/moment/moment",
         "moment-duration-format": "bower_components/moment-duration-format/lib/moment-duration-format",
         "moment-timezone": "bower_components/moment-timezone/builds/moment-timezone-with-data",
-        "saveAs": "bower_components/FileSaver.js/FileSaver.min",
+        "saveAs": "bower_components/file-saver/FileSaver.min",
         "screenfull": "bower_components/screenfull/dist/screenfull.min",
         "text": "bower_components/text/text",
         "uuid": "bower_components/node-uuid/uuid",