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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
if(!dojo._hasResource["dojo.dnd.Selector"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojo.dnd.Selector"] = true;
dojo.provide("dojo.dnd.Selector");
dojo.require("dojo.dnd.common");
dojo.require("dojo.dnd.Container");
/*
Container item states:
"" - an item is not selected
"Selected" - an item is selected
"Anchor" - an item is selected, and is an anchor for a "shift" selection
*/
dojo.declare("dojo.dnd.Selector", dojo.dnd.Container, {
// summary: a Selector object, which knows how to select its children
constructor: function(node, params){
// summary: a constructor of the Selector
// node: Node: node or node's id to build the selector on
// params: Object: a dict of parameters, recognized parameters are:
// singular: Boolean: allows selection of only one element, if true
// the rest of parameters are passed to the container
if(!params){ params = {}; }
this.singular = params.singular;
// class-specific variables
this.selection = {};
this.anchor = null;
this.simpleSelection = false;
// set up events
this.events.push(
dojo.connect(this.node, "onmousedown", this, "onMouseDown"),
dojo.connect(this.node, "onmouseup", this, "onMouseUp"));
},
// object attributes (for markup)
singular: false, // is singular property
// methods
getSelectedNodes: function(){
// summary: returns a list (an array) of selected nodes
var t = new dojo.NodeList();
var e = dojo.dnd._empty;
for(var i in this.selection){
if(i in e){ continue; }
t.push(dojo.byId(i));
}
return t; // Array
},
selectNone: function(){
// summary: unselects all items
return this._removeSelection()._removeAnchor(); // self
},
selectAll: function(){
// summary: selects all items
this.forInItems(function(data, id){
this._addItemClass(dojo.byId(id), "Selected");
this.selection[id] = 1;
}, this);
return this._removeAnchor(); // self
},
deleteSelectedNodes: function(){
// summary: deletes all selected items
var e = dojo.dnd._empty;
for(var i in this.selection){
if(i in e){ continue; }
var n = dojo.byId(i);
this.delItem(i);
dojo._destroyElement(n);
}
this.anchor = null;
this.selection = {};
return this; // self
},
insertNodes: function(addSelected, data, before, anchor){
// summary: inserts new data items (see Container's insertNodes method for details)
// addSelected: Boolean: all new nodes will be added to selected items, if true, no selection change otherwise
// data: Array: a list of data items, which should be processed by the creator function
// before: Boolean: insert before the anchor, if true, and after the anchor otherwise
// anchor: Node: the anchor node to be used as a point of insertion
var oldCreator = this._normalizedCreator;
this._normalizedCreator = function(item, hint){
var t = oldCreator.call(this, item, hint);
if(addSelected){
if(!this.anchor){
this.anchor = t.node;
this._removeItemClass(t.node, "Selected");
this._addItemClass(this.anchor, "Anchor");
}else if(this.anchor != t.node){
this._removeItemClass(t.node, "Anchor");
this._addItemClass(t.node, "Selected");
}
this.selection[t.node.id] = 1;
}else{
this._removeItemClass(t.node, "Selected");
this._removeItemClass(t.node, "Anchor");
}
return t;
};
dojo.dnd.Selector.superclass.insertNodes.call(this, data, before, anchor);
this._normalizedCreator = oldCreator;
return this; // self
},
destroy: function(){
// summary: prepares the object to be garbage-collected
dojo.dnd.Selector.superclass.destroy.call(this);
this.selection = this.anchor = null;
},
// markup methods
markupFactory: function(params, node){
params._skipStartup = true;
return new dojo.dnd.Selector(node, params);
},
// mouse events
onMouseDown: function(e){
// summary: event processor for onmousedown
// e: Event: mouse event
if(!this.current){ return; }
if(!this.singular && !dojo.dnd.getCopyKeyState(e) && !e.shiftKey && (this.current.id in this.selection)){
this.simpleSelection = true;
dojo.stopEvent(e);
return;
}
if(!this.singular && e.shiftKey){
if(!dojo.dnd.getCopyKeyState(e)){
this._removeSelection();
}
var c = this.getAllNodes();
if(c.length){
if(!this.anchor){
this.anchor = c[0];
this._addItemClass(this.anchor, "Anchor");
}
this.selection[this.anchor.id] = 1;
if(this.anchor != this.current){
var i = 0;
for(; i < c.length; ++i){
var node = c[i];
if(node == this.anchor || node == this.current){ break; }
}
for(++i; i < c.length; ++i){
var node = c[i];
if(node == this.anchor || node == this.current){ break; }
this._addItemClass(node, "Selected");
this.selection[node.id] = 1;
}
this._addItemClass(this.current, "Selected");
this.selection[this.current.id] = 1;
}
}
}else{
if(this.singular){
if(this.anchor == this.current){
if(dojo.dnd.getCopyKeyState(e)){
this.selectNone();
}
}else{
this.selectNone();
this.anchor = this.current;
this._addItemClass(this.anchor, "Anchor");
this.selection[this.current.id] = 1;
}
}else{
if(dojo.dnd.getCopyKeyState(e)){
if(this.anchor == this.current){
delete this.selection[this.anchor.id];
this._removeAnchor();
}else{
if(this.current.id in this.selection){
this._removeItemClass(this.current, "Selected");
delete this.selection[this.current.id];
}else{
if(this.anchor){
this._removeItemClass(this.anchor, "Anchor");
this._addItemClass(this.anchor, "Selected");
}
this.anchor = this.current;
this._addItemClass(this.current, "Anchor");
this.selection[this.current.id] = 1;
}
}
}else{
if(!(this.current.id in this.selection)){
this.selectNone();
this.anchor = this.current;
this._addItemClass(this.current, "Anchor");
this.selection[this.current.id] = 1;
}
}
}
}
dojo.stopEvent(e);
},
onMouseUp: function(e){
// summary: event processor for onmouseup
// e: Event: mouse event
if(!this.simpleSelection){ return; }
this.simpleSelection = false;
this.selectNone();
if(this.current){
this.anchor = this.current;
this._addItemClass(this.anchor, "Anchor");
this.selection[this.current.id] = 1;
}
},
onMouseMove: function(e){
// summary: event processor for onmousemove
// e: Event: mouse event
this.simpleSelection = false;
},
// utilities
onOverEvent: function(){
// summary: this function is called once, when mouse is over our container
this.onmousemoveEvent = dojo.connect(this.node, "onmousemove", this, "onMouseMove");
},
onOutEvent: function(){
// summary: this function is called once, when mouse is out of our container
dojo.disconnect(this.onmousemoveEvent);
delete this.onmousemoveEvent;
},
_removeSelection: function(){
// summary: unselects all items
var e = dojo.dnd._empty;
for(var i in this.selection){
if(i in e){ continue; }
var node = dojo.byId(i);
if(node){ this._removeItemClass(node, "Selected"); }
}
this.selection = {};
return this; // self
},
_removeAnchor: function(){
if(this.anchor){
this._removeItemClass(this.anchor, "Anchor");
this.anchor = null;
}
return this; // self
}
});
}
|
