1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
dojo._xdResourceLoaded(function(dojo, dijit, dojox){
return {depends: [["provide", "dojox.grid.enhanced.plugins._SelectionPreserver"]],
defineResource: function(dojo, dijit, dojox){if(!dojo._hasResource["dojox.grid.enhanced.plugins._SelectionPreserver"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.grid.enhanced.plugins._SelectionPreserver"] = true;
dojo.provide("dojox.grid.enhanced.plugins._SelectionPreserver");
dojo.declare("dojox.grid.enhanced.plugins._SelectionPreserver", null, {
// summary:
// Preserve selections across various user actions.
//
// description:
// When this feature turned on, Grid will try to preserve selections across various user actions, e.g. sorting, filtering etc.
// Precondition - Identifier(id) is required for store, as id is used for differentiating row items.
// Known issue - The preserved selections might be inaccurate if some unloaded rows are selected by range previously(e.g.SHIFT + click)
//
// example:
// | //To turn on this - set 'keepSelection' attribute to true
// | <div dojoType="dojox.grid.EnhancedGrid" keepSelection = true .../>
//_connects: Array
// List of all connections.
_connects: [],
constructor: function(selection){
this.selection = selection;
var grid = this.grid = selection.grid;
grid.onSelectedById = this.onSelectedById;
this.reset();
var oldClearData = grid._clearData;
var _this = this;
grid._clearData = function(){
_this._updateMapping(!grid._noInternalMapping);
_this._trustSelection = [];
oldClearData.apply(grid, arguments);
};
this.connect(grid, '_setStore', 'reset');
this.connect(grid, '_addItem', '_reSelectById');
this.connect(selection, 'addToSelection', dojo.hitch(this, '_selectById', true));
this.connect(selection, 'deselect', dojo.hitch(this, '_selectById', false));
this.connect(selection, 'selectRange', dojo.hitch(this, '_updateMapping', true, true, false));
this.connect(selection, 'deselectRange', dojo.hitch(this, '_updateMapping', true, false, false));
this.connect(selection, 'deselectAll', dojo.hitch(this, '_updateMapping', true, false, true));
},
destroy: function(){
this.reset();
dojo.forEach(this._connects, dojo.disconnect);
delete this._connects;
},
connect: function(obj, event, method){
// summary:
// Connects specified obj/event to specified method of this object.
var conn = dojo.connect(obj, event, this, method);
this._connects.push(conn);
return conn;
},
reset: function(){
this._idMap = [];
this._selectedById = {};
this._trustSelection = [];
this._defaultSelected = false;
},
_reSelectById: function(item, index){
// summary:
// When some rows is fetched, determine whether it should be selected.
// When this function is called, grid.selection.selected[] is not trustable.
var s = this.selection, g = this.grid;
if(item && g._hasIdentity){
var id = g.store.getIdentity(item);
if(this._selectedById[id] === undefined){
if(!this._trustSelection[index]){
s.selected[index] = this._defaultSelected;
}
}else{
s.selected[index] = this._selectedById[id];
}
this._idMap.push(id);
g.onSelectedById(id, index, s.selected[index]);
}
},
_selectById: function(toSelect, inItemOrIndex){
// summary:
// Record selected rows by ID.
if(this.selection.mode == 'none' || !this.grid._hasIdentity){ return; }
var item = inItemOrIndex;
if(typeof inItemOrIndex == "number" || typeof inItemOrIndex == "string"){
var entry = this.grid._by_idx[inItemOrIndex];
item = entry && entry.item;
}
if(item){
var id = this.grid.store.getIdentity(item);
this._selectedById[id] = !!toSelect;
}else{
this._trustSelection[inItemOrIndex] = true;
}
},
onSelectedById: function(id, rowIndex, value){},
_updateMapping: function(trustSelection, isSelect, isForAll, from, to){
// summary:
// This function trys to keep the selection info updated when range selection is performed.
// 1. Calculate how many unloaded rows are there;
// 2. update _selectedById data if grid.selection._selected can be trusted, so loaded but unselected rows can
// be properly recorded.
var s = this.selection, g = this.grid, flag = 0, unloaded = 0, i, id;
for(i = g.rowCount - 1; i >= 0; --i){
if(!g._by_idx[i]){
++unloaded;
flag += s.selected[i] ? 1 : -1;
}else{
id = g._by_idx[i].idty;
if(id && (trustSelection || this._selectedById[id] === undefined)){
this._selectedById[id] = !!s.selected[i];
}
}
}
if(unloaded){
this._defaultSelected = flag > 0;
}
if(!isForAll && from !== undefined && to !== undefined){
isForAll = !g.usingPagination && Math.abs(to - from + 1) === g.rowCount;
}
// When deselectAll, make sure every thing is deselected, even if it was selected but not loaded now.
// This occurs only when pagination's "All" is used.
if(isForAll && !g.usingPagination){
for(i = this._idMap.length; i >= 0; --i){
this._selectedById[this._idMap[i]] = isSelect;
}
}
}
});
}
}};});
|
