Merge remote-tracking branch 'origin/open929' into open-master

platform/commonUI/edit/src/representers/EditToolbarRepresenter.js

@@ -1,8 +1,8 @@
 /*global define*/
 
 define(
-    ['./EditToolbar'],
-    function (EditToolbar) {
+    ['./EditToolbar', './EditToolbarSelection'],
+    function (EditToolbar, EditToolbarSelection) {
         "use strict";
 
         // No operation
@@ -81,8 +81,8 @@ define(
                 var definition = (representation || {}).toolbar || {};
                 // Expose the toolbar object to the parent scope
                 initialize(definition);
-                // Clear any existing selection
-                scope.selection = [];
+                // Create a selection scope
+                scope.selection = new EditToolbarSelection();
                 // Initialize toolbar to an empty selection
                 updateSelection([]);
             }
@@ -101,7 +101,7 @@ define(
                 // Detect and handle changes to state from the toolbar
                 scope.$watchCollection(getState, updateState);
                 // Watch for changes in the current selection state
-                scope.$watchCollection("selection", updateSelection);
+                scope.$watchCollection("selection.all()", updateSelection);
                 // Expose toolbar state under that name
                 scope.$parent[attrs.toolbar] = toolbarObject;
             }

platform/commonUI/edit/src/representers/EditToolbarSelection.js

@@ -0,0 +1,125 @@
+/*global define*/
+
+define(
+    [],
+    function () {
+        "use strict";
+
+        /**
+         * Tracks selection state for editable views. Selection is
+         * implemented such that (from the toolbar's perspective)
+         * up to two objects can be "selected" at any given time:
+         *
+         * * The view proxy (see the `proxy` method), which provides
+         *   an interface for interacting with the view itself (e.g.
+         *   for buttons like "Add")
+         * * The selection, for single selected elements within the
+         *   view.
+         *
+         * @constructor
+         */
+        function EditToolbarSelection() {
+            var selection = [ {} ],
+                selecting = false,
+                selected;
+
+            // Remove the currently-selected object
+            function deselect() {
+                // Nothing to do if we don't have a selected object
+                if (selecting) {
+                    // Clear state tracking
+                    selecting = false;
+                    selected = undefined;
+
+                    // Remove the selection
+                    selection.pop();
+
+                    return true;
+                }
+                return false;
+            }
+
+            // Select an object
+            function select(obj) {
+                // Proxy is always selected
+                if (obj === selection[0]) {
+                    return false;
+                }
+
+                // Clear any existing selection
+                deselect();
+
+                // Note the current selection state
+                selected = obj;
+                selecting = true;
+
+                // Add the selection
+                selection.push(obj);
+            }
+
+
+            // Check if an object is selected
+            function isSelected(obj) {
+                return (obj === selected) || (obj === selection[0]);
+            }
+
+            // Getter for current selection
+            function get() {
+                return selected;
+            }
+
+            // Getter/setter for view proxy
+            function proxy(p) {
+                if (arguments.length > 0) {
+                    selection[0] = p;
+                }
+                return selection[0];
+            }
+
+            // Getter for the full array of selected objects (incl. view proxy)
+            function all() {
+                return selection;
+            }
+
+            return {
+                /**
+                 * Check if an object is currently selected.
+                 * @returns true if selected, otherwise false
+                 */
+                selected: isSelected,
+                /**
+                 * Select an object.
+                 * @param obj the object to select
+                 * @returns {boolean} true if selection changed
+                 */
+                select: select,
+                /**
+                 * Clear the current selection.
+                 * @returns {boolean} true if selection changed
+                 */
+                deselect: deselect,
+                /**
+                 * Get the currently-selected object.
+                 * @returns the currently selected object
+                 */
+                get: get,
+                /**
+                 * Get/set the view proxy (for toolbar actions taken upon
+                 * the view itself.)
+                 * @param [proxy] the view proxy (if setting)
+                 * @returns the current view proxy
+                 */
+                proxy: proxy,
+                /**
+                 * Get an array containing all selections, including the
+                 * selection proxy. It is generally not advisable to
+                 * mutate this array directly.
+                 * @returns {Array} all selections
+                 */
+                all: all
+            };
+        }
+
+        return EditToolbarSelection;
+    }
+);