]>
Commit | Line | Data |
---|---|---|
c4685c84 TL |
1 | /** |
2 | * @private | |
3 | */ | |
4 | Ext.define('Ext.event.publisher.ElementPaint', { | |
5 | ||
6 | extend: 'Ext.event.publisher.Publisher', | |
7 | ||
8 | requires: [ | |
9 | 'Ext.util.PaintMonitor', | |
10 | 'Ext.TaskQueue' | |
11 | ], | |
12 | ||
13 | targetType: 'element', | |
14 | ||
15 | handledEvents: ['painted'], | |
16 | ||
17 | constructor: function() { | |
18 | this.monitors = {}; | |
19 | ||
20 | this.callSuper(arguments); | |
21 | }, | |
22 | ||
23 | subscribe: function(target) { | |
24 | var match = target.match(this.idSelectorRegex), | |
25 | subscribers = this.subscribers, | |
26 | id, element; | |
27 | ||
28 | if (!match) { | |
29 | return false; | |
30 | } | |
31 | ||
32 | id = match[1]; | |
33 | ||
34 | if (subscribers.hasOwnProperty(id)) { | |
35 | subscribers[id]++; | |
36 | return true; | |
37 | } | |
38 | ||
39 | subscribers[id] = 1; | |
40 | ||
41 | element = Ext.get(id); | |
42 | ||
43 | this.monitors[id] = new Ext.util.PaintMonitor({ | |
44 | element: element, | |
45 | callback: this.onElementPainted, | |
46 | scope: this, | |
47 | args: [target, element] | |
48 | }); | |
49 | ||
50 | return true; | |
51 | }, | |
52 | ||
53 | unsubscribe: function(target, eventName, all) { | |
54 | var match = target.match(this.idSelectorRegex), | |
55 | subscribers = this.subscribers, | |
56 | id; | |
57 | ||
58 | if (!match) { | |
59 | return false; | |
60 | } | |
61 | ||
62 | id = match[1]; | |
63 | ||
64 | if (!subscribers.hasOwnProperty(id) || (!all && --subscribers[id] > 0)) { | |
65 | return true; | |
66 | } | |
67 | ||
68 | delete subscribers[id]; | |
69 | ||
70 | this.monitors[id].destroy(); | |
71 | delete this.monitors[id]; | |
72 | ||
73 | return true; | |
74 | }, | |
75 | ||
76 | onElementPainted: function(target, element) { | |
77 | Ext.TaskQueue.requestRead('dispatch', this, [target, 'painted', [element]]); | |
78 | } | |
79 | }); |