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
|
//>>built
define("dojox/dtl/contrib/dom", [
"dojo/_base/kernel",
"dojo/_base/lang",
"dojo/_base/connect",
"dojo/dom-style",
"dojo/dom-construct",
"../_base",
"../dom"
], function(kernel,lang,connect,domStyle,domConstruct,dd,dddom){
/*=====
dd = dojox.dtl;
=====*/
var ddch = lang.getObject("dojox.dtl.contrib.dom", true);
var simple = {render: function(){ return this.contents; }};
ddch.StyleNode = lang.extend(function(styles){
this.contents = {};
this._current = {};
this._styles = styles;
for(var key in styles){
if(styles[key].indexOf("{{") != -1){
var node = new dd.Template(styles[key]);
}else{
var node = lang.delegate(simple);
node.contents = styles[key];
}
this.contents[key] = node;
}
},
{
render: function(context, buffer){
for(var key in this.contents){
var value = this.contents[key].render(context);
if(this._current[key] != value){
domStyle.set(buffer.getParent(), key, this._current[key] = value);
}
}
return buffer;
},
unrender: function(context, buffer){
this._current = {};
return buffer;
},
clone: function(buffer){
return new this.constructor(this._styles);
}
});
ddch.BufferNode = lang.extend(function(nodelist, options){
this.nodelist = nodelist;
this.options = options;
},
{
_swap: function(type, node){
if(!this.swapped && this.parent.parentNode){
if(type == "node"){
if((node.nodeType == 3 && !this.options.text) || (node.nodeType == 1 && !this.options.node)){
return;
}
}else if(type == "class"){
if(type != "class"){
return;
}
}
this.onAddNode && connect.disconnect(this.onAddNode);
this.onRemoveNode && connect.disconnect(this.onRemoveNode);
this.onChangeAttribute && connect.disconnect(this.onChangeAttribute);
this.onChangeData && connect.disconnect(this.onChangeData);
this.swapped = this.parent.cloneNode(true);
this.parent.parentNode.replaceChild(this.swapped, this.parent);
}
},
render: function(context, buffer){
this.parent = buffer.getParent();
if(this.options.node){
this.onAddNode = connect.connect(buffer, "onAddNode", lang.hitch(this, "_swap", "node"));
this.onRemoveNode = connect.connect(buffer, "onRemoveNode", lang.hitch(this, "_swap", "node"));
}
if(this.options.text){
this.onChangeData = connect.connect(buffer, "onChangeData", lang.hitch(this, "_swap", "node"));
}
if(this.options["class"]){
this.onChangeAttribute = connect.connect(buffer, "onChangeAttribute", lang.hitch(this, "_swap", "class"));
}
buffer = this.nodelist.render(context, buffer);
if(this.swapped){
this.swapped.parentNode.replaceChild(this.parent, this.swapped);
domConstruct.destroy(this.swapped);
}else{
this.onAddNode && connect.disconnect(this.onAddNode);
this.onRemoveNode && connect.disconnect(this.onRemoveNode);
this.onChangeAttribute && connect.disconnect(this.onChangeAttribute);
this.onChangeData && connect.disconnect(this.onChangeData);
}
delete this.parent;
delete this.swapped;
return buffer;
},
unrender: function(context, buffer){
return this.nodelist.unrender(context, buffer);
},
clone: function(buffer){
return new this.constructor(this.nodelist.clone(buffer), this.options);
}
});
lang.mixin(ddch, {
buffer: function(parser, token){
// summary:
// Buffer large DOM manipulations during re-render.
// description:
// When using DomTemplate, wrap any content
// that you expect to change often during
// re-rendering. It will then remove its parent
// from the main document while it re-renders that
// section of code. It will only remove it from
// the main document if a mainpulation of somes sort
// happens. ie It won't swap out if it diesn't have to.
// example:
// By default, it considers only node addition/removal
// to be "changing"
//
// | {% buffer %}{% for item in items %}<li>{{ item }}</li>{% endfor %}{% endbuffer %}
// example:
// You can explicitly declare options:
//
// * node: Watch node removal/addition
// * class: Watch for a classname to be changed
// * text: Watch for any text to be changed
//
// | {% buffer node class %}{% for item in items %}<li>{{ item }}</li>{% endfor %}{% endbuffer %}
var parts = token.contents.split().slice(1);
var options = {};
var found = false;
for(var i = parts.length; i--;){
found = true;
options[parts[i]] = true;
}
if(!found){
options.node = true;
}
var nodelist = parser.parse(["endbuffer"]);
parser.next_token();
return new ddch.BufferNode(nodelist, options);
},
html: function(parser, token){
kernel.deprecated("{% html someVariable %}", "Use {{ someVariable|safe }} instead");
return parser.create_variable_node(token.contents.slice(5) + "|safe");
},
style_: function(parser, token){
var styles = {};
token = token.contents.replace(/^style\s+/, "");
var rules = token.split(/\s*;\s*/g);
for(var i = 0, rule; rule = rules[i]; i++){
var parts = rule.split(/\s*:\s*/g);
var key = parts[0];
var value = lang.trim(parts[1]);
if(value){
styles[key] = value;
}
}
return new ddch.StyleNode(styles);
}
});
dd.register.tags("dojox.dtl.contrib", {
"dom": ["html", "attr:style", "buffer"]
});
return dojox.dtl.contrib.dom;
});
|
