]>
Commit | Line | Data |
---|---|---|
0bb29d35 DM |
1 | /* |
2 | * The DiffStore is a in-memory store acting as proxy between a real store | |
3 | * instance and a component. | |
4 | * Its purpose is to redisplay the component *only* if the data has been changed | |
5 | * inside the real store, to avoid the annoying visual flickering of using | |
6 | * the real store directly. | |
7 | * | |
8 | * Implementation: | |
9 | * The DiffStore monitors via mon() the 'load' events sent by the real store. | |
10 | * On each 'load' event, the DiffStore compares its own content with the target | |
11 | * store (call to cond_add_item()) and then fires a 'refresh' event. | |
12 | * The 'refresh' event will automatically trigger a view refresh on the component | |
13 | * who binds to this store. | |
14 | */ | |
15 | ||
16 | /* Config properties: | |
17 | * rstore: the realstore which will autorefresh its content from the API | |
18 | * Only works if rstore has a model and use 'idProperty' | |
19 | * sortAfterUpdate: sort the diffstore before rendering the view | |
20 | */ | |
21 | Ext.define('Proxmox.data.DiffStore', { | |
22 | extend: 'Ext.data.Store', | |
23 | alias: 'store.diff', | |
24 | ||
25 | sortAfterUpdate: false, | |
13fc756d | 26 | |
65277f6a DC |
27 | // if set to true, destroy rstore on destruction |
28 | autoDestroyRstore: false, | |
29 | ||
30 | onDestroy: function() { | |
31 | let me = this; | |
32 | if (me.autoDestroyRstore) { | |
33 | if (Ext.isFunction(me.rstore.destroy)) { | |
34 | me.rstore.destroy(); | |
35 | } | |
36 | delete me.rstore; | |
37 | } | |
38 | me.callParent(); | |
39 | }, | |
40 | ||
0bb29d35 DM |
41 | constructor: function(config) { |
42 | var me = this; | |
43 | ||
44 | config = config || {}; | |
45 | ||
46 | if (!config.rstore) { | |
47 | throw "no rstore specified"; | |
48 | } | |
49 | ||
50 | if (!config.rstore.model) { | |
51 | throw "no rstore model specified"; | |
52 | } | |
53 | ||
54 | var rstore = config.rstore; | |
55 | ||
56 | Ext.apply(config, { | |
57 | model: rstore.model, | |
58 | proxy: { type: 'memory' } | |
59 | }); | |
60 | ||
61 | me.callParent([config]); | |
62 | ||
65277f6a DC |
63 | me.rstore = rstore; |
64 | ||
0bb29d35 DM |
65 | var first_load = true; |
66 | ||
67 | var cond_add_item = function(data, id) { | |
68 | var olditem = me.getById(id); | |
69 | if (olditem) { | |
70 | olditem.beginEdit(); | |
71 | Ext.Array.each(me.model.prototype.fields, function(field) { | |
72 | if (olditem.data[field.name] !== data[field.name]) { | |
73 | olditem.set(field.name, data[field.name]); | |
74 | } | |
75 | }); | |
76 | olditem.endEdit(true); | |
13fc756d | 77 | olditem.commit(); |
0bb29d35 DM |
78 | } else { |
79 | var newrec = Ext.create(me.model, data); | |
80 | var pos = (me.appendAtStart && !first_load) ? 0 : me.data.length; | |
81 | me.insert(pos, newrec); | |
82 | } | |
83 | }; | |
84 | ||
85 | var loadFn = function(s, records, success) { | |
86 | ||
87 | if (!success) { | |
88 | return; | |
89 | } | |
90 | ||
91 | me.suspendEvents(); | |
92 | ||
93 | // getSource returns null if data is not filtered | |
94 | // if it is filtered it returns all records | |
95 | var allItems = me.getData().getSource() || me.getData(); | |
96 | ||
97 | // remove vanished items | |
98 | allItems.each(function(olditem) { | |
65277f6a | 99 | var item = me.rstore.getById(olditem.getId()); |
0bb29d35 DM |
100 | if (!item) { |
101 | me.remove(olditem); | |
102 | } | |
103 | }); | |
104 | ||
65277f6a | 105 | me.rstore.each(function(item) { |
0bb29d35 DM |
106 | cond_add_item(item.data, item.getId()); |
107 | }); | |
108 | ||
109 | me.filter(); | |
110 | ||
111 | if (me.sortAfterUpdate) { | |
112 | me.sort(); | |
113 | } | |
114 | ||
115 | first_load = false; | |
116 | ||
117 | me.resumeEvents(); | |
118 | me.fireEvent('refresh', me); | |
119 | me.fireEvent('datachanged', me); | |
120 | }; | |
121 | ||
65277f6a | 122 | if (me.rstore.isLoaded()) { |
0bb29d35 DM |
123 | // if store is already loaded, |
124 | // insert items instantly | |
65277f6a | 125 | loadFn(me.rstore, [], true); |
0bb29d35 DM |
126 | } |
127 | ||
65277f6a | 128 | me.mon(me.rstore, 'load', loadFn); |
0bb29d35 DM |
129 | } |
130 | }); |