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Merge pull request #1131 from nasa/open1094

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Resolve synchronization issues with MutableObject
This commit is contained in:
Victor Woeltjen 2016-08-25 13:26:50 -07:00 committed by GitHub
commit b4dc50295c
10 changed files with 223 additions and 113 deletions
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6
index.html
View File

@ -34,9 +34,9 @@
'./tutorials/todo/todo',
'./example/imagery/bundle',
'./example/eventGenerator/bundle',
'./example/generator/bundle',
], function (todo) {
todo(mct);
'./example/generator/bundle'
], function (todoPlugin) {
mct.install(todoPlugin);
mct.run();
})
});

6
src/Selection.js
View File

@ -8,7 +8,7 @@ define(['EventEmitter'], function (EventEmitter) {
Selection.prototype.select = function (value) {
this.selectedValues.push(value);
this.emit('change');
this.emit('change', this.selectedValues);
return this.deselect.bind(this, value);
};
@ -16,7 +16,7 @@ define(['EventEmitter'], function (EventEmitter) {
this.selectedValues = this.selectedValues.filter(function (v) {
return v !== value;
});
this.emit('change');
this.emit('change', this.selectedValues);
};
Selection.prototype.selected = function () {
@ -25,7 +25,7 @@ define(['EventEmitter'], function (EventEmitter) {
Selection.prototype.clear = function () {
this.selectedValues = [];
this.emit('change');
this.emit('change', this.selectedValues);
};
return Selection;

49
src/api/objects/LegacyObjectAPIInterceptor.js
View File

@ -1,15 +1,54 @@
define([
'./object-utils',
'./ObjectAPI'
'./ObjectAPI',
'./objectEventEmitter'
], function (
utils,
ObjectAPI
ObjectAPI,
objectEventEmitter
) {
function ObjectServiceProvider(objectService, instantiate) {
function ObjectServiceProvider(objectService, instantiate, topic) {
this.objectService = objectService;
this.instantiate = instantiate;
this.generalTopic = topic('mutation');
this.bridgeEventBuses();
}
/**
* Bridges old and new style mutation events to provide compatibility between the two APIs
* @private
*/
ObjectServiceProvider.prototype.bridgeEventBuses = function () {
var removeGeneralTopicListener;
var handleMutation = function (newStyleObject) {
var keyString = utils.makeKeyString(newStyleObject.key);
var oldStyleObject = this.instantiate(utils.toOldFormat(newStyleObject), keyString);
// Don't trigger self
removeGeneralTopicListener();
oldStyleObject.getCapability('mutation').mutate(function () {
return utils.toOldFormat(newStyleObject);
});
removeGeneralTopicListener = this.generalTopic.listen(handleLegacyMutation);
}.bind(this);
var handleLegacyMutation = function (legacyObject){
var newStyleObject = utils.toNewFormat(legacyObject.getModel(), legacyObject.getId());
//Don't trigger self
objectEventEmitter.off('mutation', handleMutation);
objectEventEmitter.emit(newStyleObject.key.identifier + ":*", newStyleObject);
objectEventEmitter.on('mutation', handleMutation);
}.bind(this);
objectEventEmitter.on('mutation', handleMutation);
removeGeneralTopicListener = this.generalTopic.listen(handleLegacyMutation);
};
ObjectServiceProvider.prototype.save = function (object) {
var key = object.key,
keyString = utils.makeKeyString(key),
@ -37,7 +76,7 @@ define([
// Injects new object API as a decorator so that it hijacks all requests.
// Object providers implemented on new API should just work, old API should just work, many things may break.
function LegacyObjectAPIInterceptor(ROOTS, instantiate, objectService) {
function LegacyObjectAPIInterceptor(ROOTS, instantiate, topic, objectService) {
this.getObjects = function (keys) {
var results = {},
promises = keys.map(function (keyString) {
@ -56,7 +95,7 @@ define([
};
ObjectAPI._supersecretSetFallbackProvider(
new ObjectServiceProvider(objectService, instantiate)
new ObjectServiceProvider(objectService, instantiate, topic)
);
ROOTS.forEach(function (r) {

33
src/api/objects/MutableObject.js
View File

@ -1,10 +1,21 @@
define([
'lodash'
'lodash',
'./objectEventEmitter'
], function (
_
_,
objectEventEmitter
) {
function MutableObject(eventEmitter, object) {
this.eventEmitter = eventEmitter;
var ANY_OBJECT_EVENT = "mutation";
/**
* The MutableObject wraps a DomainObject and provides getters and
* setters for
* @param eventEmitter
* @param object
* @constructor
*/
function MutableObject(object) {
this.object = object;
this.unlisteners = [];
}
@ -21,22 +32,22 @@ define([
MutableObject.prototype.on = function(path, callback) {
var fullPath = qualifiedEventName(this.object, path);
this.eventEmitter.on(fullPath, callback);
this.unlisteners.push(this.eventEmitter.off.bind(this.eventEmitter, fullPath, callback));
objectEventEmitter.on(fullPath, callback);
this.unlisteners.push(objectEventEmitter.off.bind(objectEventEmitter, fullPath, callback));
};
MutableObject.prototype.set = function (path, value) {
_.set(this.object, path, value);
_.set(this.object, 'modified', Date.now());
//Emit event specific to property
this.eventEmitter.emit(qualifiedEventName(this.object, path), value);
objectEventEmitter.emit(qualifiedEventName(this.object, path), value);
//Emit wildcare event
this.eventEmitter.emit(qualifiedEventName(this.object, '*'), this.object);
};
objectEventEmitter.emit(qualifiedEventName(this.object, '*'), this.object);
MutableObject.prototype.get = function (path) {
return _.get(this.object, path);
//Emit a general "any object" event
objectEventEmitter.emit(ANY_OBJECT_EVENT, this.object);
};
return MutableObject;

18
src/api/objects/MutableObjectSpec.js
View File

@ -60,25 +60,25 @@ define(['./MutableObject'], function (MutableObject) {
});
it('Supports getting and setting of object properties', function () {
expect(mutableObject.get('stringProperty')).toEqual('stringValue');
expect(domainObject.stringProperty).toEqual('stringValue');
mutableObject.set('stringProperty', 'updated');
expect(mutableObject.get('stringProperty')).toEqual('updated');
expect(domainObject.stringProperty).toEqual('updated');
var newArrayProperty = [];
expect(mutableObject.get('arrayProperty')).toEqual(arrayProperty);
expect(domainObject.arrayProperty).toEqual(arrayProperty);
mutableObject.set('arrayProperty', newArrayProperty);
expect(mutableObject.get('arrayProperty')).toEqual(newArrayProperty);
expect(domainObject.arrayProperty).toEqual(newArrayProperty);
var newObjectProperty = [];
expect(mutableObject.get('objectProperty')).toEqual(objectProperty);
expect(domainObject.objectProperty).toEqual(objectProperty);
mutableObject.set('objectProperty', newObjectProperty);
expect(mutableObject.get('objectProperty')).toEqual(newObjectProperty);
expect(domainObject.objectProperty).toEqual(newObjectProperty);
});
it('Supports getting and setting of nested properties', function () {
expect(mutableObject.get('objectProperty')).toEqual(objectProperty);
expect(mutableObject.get('objectProperty.prop1')).toEqual(objectProperty.prop1);
expect(mutableObject.get('objectProperty.prop3.propA')).toEqual(objectProperty.prop3.propA);
expect(domainObject.objectProperty).toEqual(objectProperty);
expect(domainObject.objectProperty.prop1).toEqual(objectProperty.prop1);
expect(domainObject.objectProperty.prop3.propA).toEqual(objectProperty.prop3.propA);
mutableObject.set('objectProperty.prop1', 'new-prop-1');
expect(domainObject.objectProperty.prop1).toEqual('new-prop-1');

7
src/api/objects/ObjectAPI.js
View File

@ -1,11 +1,9 @@
define([
'lodash',
'EventEmitter',
'./object-utils',
'./MutableObject'
], function (
_,
EventEmitter,
utils,
MutableObject
) {
@ -18,8 +16,7 @@ define([
var Objects = {},
ROOT_REGISTRY = [],
PROVIDER_REGISTRY = {},
FALLBACK_PROVIDER,
eventEmitter = new EventEmitter();
FALLBACK_PROVIDER;
Objects._supersecretSetFallbackProvider = function (p) {
FALLBACK_PROVIDER = p;
@ -83,7 +80,7 @@ define([
};
Objects.getMutable = function (object) {
return new MutableObject(eventEmitter, object);
return new MutableObject(object);
};
return Objects;

3
src/api/objects/bundle.js
View File

@ -40,7 +40,8 @@ define([
implementation: LegacyObjectAPIInterceptor,
depends: [
"roots[]",
"instantiate"
"instantiate",
"topic"
]
}
]

10
src/api/objects/objectEventEmitter.js Normal file
View File

@ -0,0 +1,10 @@
define([
"EventEmitter"
], function (
EventEmitter
) {
/**
* Provides a singleton event bus for sharing between objects.
*/
return new EventEmitter();
});

8
tutorials/todo/todo.html
View File

@ -1,14 +1,14 @@
<div class="example-todo">
<div class="example-button-group">
<a class="example-todo-button-all">All</a>
<a class="example-todo-button-incomplete">Incomplete</a>
<a class="example-todo-button-complete">Complete</a>
<a class="example-todo-button" data-filter="all">All</a>
<a class="example-todo-button" data-filter="incomplete">Incomplete</a>
<a class="example-todo-button" data-filter="complete">Complete</a>
</div>
<ul class="example-todo-task-list">
</ul>
<div class="example-message">
<div class="example-no-tasks">
There are no tasks to show.
</div>
</div>

196
tutorials/todo/todo.js
View File

@ -25,21 +25,16 @@ define([
});
function TodoView(domainObject) {
this.domainObject = domainObject;
this.mutableObject = undefined;
this.tasks = domainObject.tasks;
this.filterValue = "all";
this.render = this.render.bind(this);
this.objectChanged = this.objectChanged.bind(this);
}
TodoView.prototype.objectChanged = function (object) {
if (this.mutableObject) {
this.mutableObject.stopListening();
}
this.mutableObject = mct.Objects.getMutable(object);
this.render();
this.setTaskStatus = this.setTaskStatus.bind(this);
this.selectTask = this.selectTask.bind(this);
<<<<<<< HEAD
this.mutableObject = mct.Objects.getMutable(domainObject);
this.mutableObject.on('tasks', this.updateTasks.bind(this));
=======
//If anything on object changes, re-render view
this.mutableObject.on("*", this.objectChanged);
};
@ -56,40 +51,71 @@ define([
};
$(container).empty().append(self.$els);
>>>>>>> origin/api-tutorials
this.$el = $(todoTemplate);
this.$emptyMessage = this.$el.find('.example-no-tasks');
this.$taskList = this.$el.find('.example-todo-task-list');
this.$el.on('click', '[data-filter]', this.updateFilter.bind(this));
this.$el.on('change', 'li', this.setTaskStatus.bind(this));
this.$el.on('click', '.example-task-description', this.selectTask.bind(this));
<<<<<<< HEAD
this.updateSelection = this.updateSelection.bind(this);
mct.selection.on('change', this.updateSelection);
}
TodoView.prototype.show = function (container) {
$(container).empty().append(this.$el);
this.render();
=======
self.initialize();
self.objectChanged(this.domainObject);
mct.selection.on('change', self.render);
>>>>>>> origin/api-tutorials
};
TodoView.prototype.destroy = function () {
if (this.mutableObject) {
this.mutableObject.stopListening();
}
mct.selection.off('change', this.render);
this.mutableObject.stopListening();
mct.selection.off('change', this.updateSelection);
};
TodoView.prototype.setFilter = function (value) {
this.filterValue = value;
TodoView.prototype.updateSelection = function (selection) {
if (selection && selection.length) {
this.selection = selection[0].index;
} else {
this.selection = -1;
}
this.render();
};
TodoView.prototype.initialize = function () {
Object.keys(this.$buttons).forEach(function (k) {
this.$buttons[k].on('click', this.setFilter.bind(this, k));
}, this);
TodoView.prototype.updateTasks = function (tasks) {
this.tasks = tasks;
this.render();
};
TodoView.prototype.render = function () {
var $els = this.$els;
var mutableObject = this.mutableObject;
var tasks = mutableObject.get('tasks');
var $message = $els.find('.example-message');
var $list = $els.find('.example-todo-task-list');
var $buttons = this.$buttons;
var filters = {
TodoView.prototype.updateFilter = function (e) {
this.filterValue = $(e.target).data('filter');
this.render();
};
TodoView.prototype.setTaskStatus = function (e) {
var $checkbox = $(e.target);
var taskIndex = $checkbox.data('taskIndex');
var completed = !!$checkbox.prop('checked');
this.tasks[taskIndex].completed = completed;
this.mutableObject.set('tasks[' + taskIndex + '].checked', completed);
};
TodoView.prototype.selectTask = function (e) {
var taskIndex = $(e.target).data('taskIndex');
mct.selection.clear();
mct.selection.select({index: taskIndex});
};
TodoView.prototype.getFilteredTasks = function () {
return this.tasks.filter({
all: function () {
return true;
},
@ -99,61 +125,89 @@ define([
complete: function (task) {
return task.completed;
}
};
var filterValue = this.filterValue;
var selected = mct.selection.selected();
}[this.filterValue]);
};
Object.keys($buttons).forEach(function (k) {
$buttons[k].toggleClass('selected', filterValue === k);
});
tasks = tasks.filter(filters[filterValue]);
TodoView.prototype.render = function () {
var filteredTasks = this.getFilteredTasks();
this.$emptyMessage.toggle(filteredTasks.length === 0);
this.$taskList.empty();
filteredTasks
.forEach(function (task) {
var $taskEl = $(taskTemplate),
taskIndex = this.tasks.indexOf(task);
$taskEl.find('.example-task-checked')
.prop('checked', task.completed)
.attr('data-task-index', taskIndex);
$taskEl.find('.example-task-description')
.text(task.description)
.toggleClass('selected', taskIndex === this.selection)
.attr('data-task-index', taskIndex);
$list.empty();
tasks.forEach(function (task, index) {
var $taskEls = $(taskTemplate);
var $checkbox = $taskEls.find('.example-task-checked');
var $desc = $taskEls.find('.example-task-description');
$checkbox.prop('checked', task.completed);
$desc.text(task.description);
$checkbox.on('change', function () {
var checked = !!$checkbox.prop('checked');
mutableObject.set("tasks." + index + ".completed", checked);
});
$desc.on('click', function () {
mct.selection.clear();
mct.selection.select({ index: index });
});
if (selected.length > 0 && selected[0].index === index) {
$desc.addClass('selected');
}
$list.append($taskEls);
});
$message.toggle(tasks.length < 1);
this.$taskList.append($taskEl);
}, this);
};
function TodoToolbarView(domainObject) {
this.domainObject = domainObject;
this.mutableObject = undefined;
this.tasks = domainObject.tasks;
this.mutableObject = mct.Objects.getMutable(domainObject);
this.handleSelectionChange = this.handleSelectionChange.bind(this);
this.mutableObject.on('tasks', this.updateTasks.bind(this));
mct.selection.on('change', this.handleSelectionChange);
this.$el = $(toolbarTemplate);
this.$remove = this.$el.find('.example-remove');
this.$el.on('click', '.example-add', this.addTask.bind(this));
this.$el.on('click', '.example-remove', this.removeTask.bind(this));
}
TodoToolbarView.prototype.updateTasks = function (tasks) {
this.tasks = tasks;
};
TodoToolbarView.prototype.addTask = function () {
var $dialog = $(dialogTemplate),
view = {
show: function (container) {
$(container).append($dialog);
},
destroy: function () {}
};
mct.dialog(view, "Add a Task").then(function () {
var description = $dialog.find('input').val();
this.tasks.push({description: description});
this.mutableObject.set('tasks', this.tasks);
}.bind(this));
};
TodoToolbarView.prototype.removeTask = function () {
if (this.selection >= 0) {
this.tasks.splice(this.selection, 1);
this.mutableObject.set('tasks', this.tasks);
mct.selection.clear();
this.render();
}
};
TodoToolbarView.prototype.show = function (container) {
var self = this;
this.destroy();
this.$els = $(toolbarTemplate);
this.render();
$(container).append(this.$els);
};
TodoToolbarView.prototype.render = function () {
var self = this;
var $els = this.$els;
self.mutableObject = mct.Objects.getMutable(this.domainObject);
var $els = $(toolbarTemplate);
var $add = $els.find('a.example-add');
var $remove = $els.find('a.example-remove');
$(container).append($els);
$add.on('click', function () {
var $dialog = $(dialogTemplate),
view = {
@ -191,14 +245,12 @@ define([
if (this.$remove) {
this.$remove.toggle(selected.length > 0);
}
this.render();
};
TodoToolbarView.prototype.destroy = function () {
mct.selection.off('change', this.handleSelectionChange);
this.$remove = undefined;
if (this.mutableObject) {
this.mutableObject.stopListening();
}
this.mutableObject.stopListening();
};
mct.type('example.todo', todoType);