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Merge pull request #25391 from alivedise/bugzilla/1079748/hierarchy-m…
…anager-v2 Bug 1079748 - Implement hierarchy manager, r=etienne
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,177 @@ | ||
| /* global BaseModule */ | ||
| 'use strict'; | ||
|
|
||
| (function() { | ||
| var HierarchyManager = function() {}; | ||
| HierarchyManager.SERVICES = [ | ||
| 'focus', | ||
| 'registerHierarchy', | ||
| 'unregisterHierarchy' | ||
| ]; | ||
| BaseModule.create(HierarchyManager, { | ||
| name: 'HierarchyManager', | ||
| EVENT_PREFIX: 'hierachy', | ||
| _ui_list: null, | ||
| _topMost: null, | ||
| DEBUG: false, | ||
|
|
||
| _start: function() { | ||
| this._ui_list = []; | ||
| }, | ||
|
|
||
| /** | ||
| * Provide the top most window information. | ||
| * Usually used by integration tests. | ||
| * @return {AppWindow|undefined} The top most window instance. | ||
| */ | ||
| getTopMostWindow: function() { | ||
| var topMostWindowManager; | ||
| this._ui_list.some(function(module) { | ||
| if (module.getActiveWindow && module.isActive()) { | ||
| topMostWindowManager = module; | ||
| return true; | ||
| } | ||
| }, this); | ||
| return topMostWindowManager && | ||
| topMostWindowManager.getActiveWindow() && | ||
| topMostWindowManager.getActiveWindow().getTopMostWindow(); | ||
| }, | ||
|
|
||
| getTopMostUI: function() { | ||
| this.debug('getting top most...', this._topMost); | ||
| return this._topMost; | ||
| }, | ||
|
|
||
| /** | ||
| * Predefined priorities per module by module name. | ||
| * @type {Array} | ||
| */ | ||
| PRIORITIES: [ | ||
| 'InitLogoHandler', | ||
| 'AttentionWindowManager', | ||
| 'SecureWindowManager', | ||
| 'LockScreenWindowManager', | ||
| 'UtilityTray', | ||
| 'TaskManager', | ||
| 'SystemDialogManager', | ||
| 'Rocketbar', | ||
| 'AppWindowManager' | ||
| ], | ||
|
|
||
| _stop: function() { | ||
| this._ui_list.forEach(function(module) { | ||
| window.removeEventListener(module + 'active', this); | ||
| window.removeEventListener(module + 'inactive', this); | ||
| }, this); | ||
| this._ui_list = []; | ||
| }, | ||
|
|
||
| updateHierarchy: function() { | ||
| if (this._ui_list.length === 0) { | ||
| this.debug('no any module watching.'); | ||
| return; | ||
| } | ||
| var lastTopMost = this._topMost; | ||
| this._topMost = null; | ||
| var found = this._ui_list.some(function(module) { | ||
| if (module.isActive()) { | ||
| this.debug(module.name + ' is becoming active now.'); | ||
| this._topMost = module; | ||
| return true; | ||
| } | ||
| }, this); | ||
|
|
||
| if (this._topMost !== lastTopMost) { | ||
| if (lastTopMost) { | ||
| this.debug('last top most is ' + lastTopMost.name); | ||
| } | ||
| if (found) { | ||
| this.debug('next top most is ' + this._topMost.name); | ||
| } | ||
| // Blur the last top most module. | ||
| lastTopMost && lastTopMost.setHierarchy && | ||
| lastTopMost.setHierarchy(false); | ||
| // Focus the new one. | ||
| this._topMost && this._topMost.setHierarchy && | ||
| this._topMost.setHierarchy(true); | ||
| this.publish('changed'); | ||
| } else { | ||
| this.debug('top most is the same.', this._topMost ? | ||
| this._topMost.name : 'NaN'); | ||
| } | ||
| }, | ||
|
|
||
| dumpHierarchy: function() { | ||
| this._ui_list.forEach(function(module, index) { | ||
| this.debug( | ||
| '[' + index + '] (' + | ||
| this.PRIORITIES.indexOf(module.name) +')' + | ||
| module.name + | ||
| ', active state = ' + module.isActive()); | ||
| }, this); | ||
| }, | ||
|
|
||
| focus: function(module) { | ||
| if (this._topMost !== module) { | ||
| return; | ||
| } | ||
| module.setHierarchy(true); | ||
| }, | ||
|
|
||
| handleEvent: function(evt) { | ||
| this.debug('handling ' + evt.type); | ||
| this.updateHierarchy(); | ||
| return false; | ||
| }, | ||
|
|
||
| /** | ||
| * This function is used for any UI module who wants to occupy the hierachy. | ||
| */ | ||
| registerHierarchy: function(module) { | ||
| if (!module.isActive) { | ||
| return; | ||
| } | ||
| if (this._ui_list.indexOf(module) >= 0) { | ||
| return; | ||
| } | ||
|
|
||
| this.debug(module.name + ' is registering the hierarchy'); | ||
| this._ui_list.push(module); | ||
| this.sortHierarchy(); | ||
| window.addEventListener(module.EVENT_PREFIX + '-activating', this); | ||
| window.addEventListener(module.EVENT_PREFIX + '-activated', this); | ||
| window.addEventListener(module.EVENT_PREFIX + '-deactivating', this); | ||
| window.addEventListener(module.EVENT_PREFIX + '-deactivated', this); | ||
| this.updateHierarchy(); | ||
| }, | ||
|
|
||
| sortHierarchy: function() { | ||
| this.debug('before sorting...'); | ||
| this.dumpHierarchy(); | ||
| var self = this; | ||
| this._ui_list.sort(function(a, b) { | ||
| return (self.PRIORITIES.indexOf(b.name) < | ||
| self.PRIORITIES.indexOf(a.name)); | ||
| }); | ||
| this.debug('after sorting...'); | ||
| this.dumpHierarchy(); | ||
| }, | ||
|
|
||
| /** | ||
| * Remove the module reference from the living UI list. | ||
| */ | ||
| unregisterHierarchy: function(module) { | ||
| var index = this._ui_list.indexOf(module); | ||
| if (index < 0) { | ||
| return; | ||
| } | ||
| this.debug(module.name + ' is unregistering the hierarchy'); | ||
| var removed = this._ui_list.splice(index, 1); | ||
| this.sortHierarchy(); | ||
| this.debug(removed.name); | ||
| window.removeEventListener(module.EVENT_PREFIX + '-activated', this); | ||
| window.removeEventListener(module.EVENT_PREFIX + '-deactivated', this); | ||
| this.updateHierarchy(); | ||
| } | ||
| }); | ||
| }()); |
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