-
Notifications
You must be signed in to change notification settings - Fork 0
/
html.js
370 lines (326 loc) · 13 KB
/
html.js
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
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
define(["./_base/kernel", "./_base/lang", "./_base/array", "./_base/declare", "./dom", "./dom-construct", "./parser"],
function(kernel, lang, darray, declare, dom, domConstruct, parser){
// module:
// dojo/html
// the parser might be needed..
// idCounter is incremented with each instantiation to allow assignment of a unique id for tracking, logging purposes
var idCounter = 0;
var html = {
// summary:
// TODOC
_secureForInnerHtml: function(/*String*/ cont){
// summary:
// removes !DOCTYPE and title elements from the html string.
//
// khtml is picky about dom faults, you can't attach a style or `<title>` node as child of body
// must go into head, so we need to cut out those tags
// cont:
// An html string for insertion into the dom
//
return cont.replace(/(?:\s*<!DOCTYPE\s[^>]+>|<title[^>]*>[\s\S]*?<\/title>)/ig, ""); // String
},
// Deprecated, should use dojo/dom-constuct.empty() directly, remove in 2.0.
_emptyNode: domConstruct.empty,
_setNodeContent: function(/*DomNode*/ node, /*String|DomNode|NodeList*/ cont){
// summary:
// inserts the given content into the given node
// node:
// the parent element
// content:
// the content to be set on the parent element.
// This can be an html string, a node reference or a NodeList, dojo/NodeList, Array or other enumerable list of nodes
// always empty
domConstruct.empty(node);
if(cont){
if(typeof cont == "string"){
cont = domConstruct.toDom(cont, node.ownerDocument);
}
if(!cont.nodeType && lang.isArrayLike(cont)){
// handle as enumerable, but it may shrink as we enumerate it
for(var startlen=cont.length, i=0; i<cont.length; i=startlen==cont.length ? i+1 : 0){
domConstruct.place( cont[i], node, "last");
}
}else{
// pass nodes, documentFragments and unknowns through to dojo.place
domConstruct.place(cont, node, "last");
}
}
// return DomNode
return node;
},
// we wrap up the content-setting operation in a object
_ContentSetter: declare("dojo.html._ContentSetter", null, {
// node: DomNode|String
// An node which will be the parent element that we set content into
node: "",
// content: String|DomNode|DomNode[]
// The content to be placed in the node. Can be an HTML string, a node reference, or a enumerable list of nodes
content: "",
// id: String?
// Usually only used internally, and auto-generated with each instance
id: "",
// cleanContent: Boolean
// Should the content be treated as a full html document,
// and the real content stripped of <html>, <body> wrapper before injection
cleanContent: false,
// extractContent: Boolean
// Should the content be treated as a full html document,
// and the real content stripped of `<html> <body>` wrapper before injection
extractContent: false,
// parseContent: Boolean
// Should the node by passed to the parser after the new content is set
parseContent: false,
// parserScope: String
// Flag passed to parser. Root for attribute names to search for. If scopeName is dojo,
// will search for data-dojo-type (or dojoType). For backwards compatibility
// reasons defaults to dojo._scopeName (which is "dojo" except when
// multi-version support is used, when it will be something like dojo16, dojo20, etc.)
parserScope: kernel._scopeName,
// startup: Boolean
// Start the child widgets after parsing them. Only obeyed if parseContent is true.
startup: true,
// lifecycle methods
constructor: function(/*Object*/ params, /*String|DomNode*/ node){
// summary:
// Provides a configurable, extensible object to wrap the setting on content on a node
// call the set() method to actually set the content..
// the original params are mixed directly into the instance "this"
lang.mixin(this, params || {});
// give precedence to params.node vs. the node argument
// and ensure its a node, not an id string
node = this.node = dom.byId( this.node || node );
if(!this.id){
this.id = [
"Setter",
(node) ? node.id || node.tagName : "",
idCounter++
].join("_");
}
},
set: function(/* String|DomNode|NodeList? */ cont, /*Object?*/ params){
// summary:
// front-end to the set-content sequence
// cont:
// An html string, node or enumerable list of nodes for insertion into the dom
// If not provided, the object's content property will be used
if(undefined !== cont){
this.content = cont;
}
// in the re-use scenario, set needs to be able to mixin new configuration
if(params){
this._mixin(params);
}
this.onBegin();
this.setContent();
var ret = this.onEnd();
if(ret && ret.then){
// Make dojox/html/_ContentSetter.set() return a Promise that resolves when load and parse complete.
return ret;
}else{
// Vanilla dojo/html._ContentSetter.set() returns a DOMNode for back compat. For 2.0, switch it to
// return a Deferred like above.
return this.node;
}
},
setContent: function(){
// summary:
// sets the content on the node
var node = this.node;
if(!node){
// can't proceed
throw new Error(this.declaredClass + ": setContent given no node");
}
try{
node = html._setNodeContent(node, this.content);
}catch(e){
// check if a domfault occurs when we are appending this.errorMessage
// like for instance if domNode is a UL and we try append a DIV
// FIXME: need to allow the user to provide a content error message string
var errMess = this.onContentError(e);
try{
node.innerHTML = errMess;
}catch(e){
console.error('Fatal ' + this.declaredClass + '.setContent could not change content due to '+e.message, e);
}
}
// always put back the node for the next method
this.node = node; // DomNode
},
empty: function(){
// summary:
// cleanly empty out existing content
// If there is a parse in progress, cancel it.
if(this.parseDeferred){
if(!this.parseDeferred.isResolved()){
this.parseDeferred.cancel();
}
delete this.parseDeferred;
}
// destroy any widgets from a previous run
// NOTE: if you don't want this you'll need to empty
// the parseResults array property yourself to avoid bad things happening
if(this.parseResults && this.parseResults.length){
darray.forEach(this.parseResults, function(w){
if(w.destroy){
w.destroy();
}
});
delete this.parseResults;
}
// this is fast, but if you know its already empty or safe, you could
// override empty to skip this step
domConstruct.empty(this.node);
},
onBegin: function(){
// summary:
// Called after instantiation, but before set();
// It allows modification of any of the object properties -
// including the node and content provided - before the set operation actually takes place
// This default implementation checks for cleanContent and extractContent flags to
// optionally pre-process html string content
var cont = this.content;
if(lang.isString(cont)){
if(this.cleanContent){
cont = html._secureForInnerHtml(cont);
}
if(this.extractContent){
var match = cont.match(/<body[^>]*>\s*([\s\S]+)\s*<\/body>/im);
if(match){ cont = match[1]; }
}
}
// clean out the node and any cruft associated with it - like widgets
this.empty();
this.content = cont;
return this.node; // DomNode
},
onEnd: function(){
// summary:
// Called after set(), when the new content has been pushed into the node
// It provides an opportunity for post-processing before handing back the node to the caller
// This default implementation checks a parseContent flag to optionally run the dojo parser over the new content
if(this.parseContent){
// populates this.parseResults and this.parseDeferred if you need those..
this._parse();
}
return this.node; // DomNode
// TODO: for 2.0 return a Promise indicating that the parse completed.
},
tearDown: function(){
// summary:
// manually reset the Setter instance if its being re-used for example for another set()
// description:
// tearDown() is not called automatically.
// In normal use, the Setter instance properties are simply allowed to fall out of scope
// but the tearDown method can be called to explicitly reset this instance.
delete this.parseResults;
delete this.parseDeferred;
delete this.node;
delete this.content;
},
onContentError: function(err){
return "Error occurred setting content: " + err;
},
onExecError: function(err){
return "Error occurred executing scripts: " + err;
},
_mixin: function(params){
// mix properties/methods into the instance
// TODO: the intention with tearDown is to put the Setter's state
// back to that of the original constructor (vs. deleting/resetting everything regardless of ctor params)
// so we could do something here to move the original properties aside for later restoration
var empty = {}, key;
for(key in params){
if(key in empty){ continue; }
// TODO: here's our opportunity to mask the properties we don't consider configurable/overridable
// .. but history shows we'll almost always guess wrong
this[key] = params[key];
}
},
_parse: function(){
// summary:
// runs the dojo parser over the node contents, storing any results in this.parseResults
// and the parse promise in this.parseDeferred
// Any errors resulting from parsing are passed to _onError for handling
var rootNode = this.node;
try{
// store the results (widgets, whatever) for potential retrieval
var inherited = {};
darray.forEach(["dir", "lang", "textDir"], function(name){
if(this[name]){
inherited[name] = this[name];
}
}, this);
var self = this;
this.parseDeferred = parser.parse({
rootNode: rootNode,
noStart: !this.startup,
inherited: inherited,
scope: this.parserScope
}).then(function(results){
return self.parseResults = results;
}, function(e){
self._onError('Content', e, "Error parsing in _ContentSetter#" + this.id);
});
}catch(e){
this._onError('Content', e, "Error parsing in _ContentSetter#" + this.id);
}
},
_onError: function(type, err, consoleText){
// summary:
// shows user the string that is returned by on[type]Error
// override/implement on[type]Error and return your own string to customize
var errText = this['on' + type + 'Error'].call(this, err);
if(consoleText){
console.error(consoleText, err);
}else if(errText){ // a empty string won't change current content
html._setNodeContent(this.node, errText, true);
}
}
}), // end declare()
set: function(/*DomNode*/ node, /*String|DomNode|NodeList*/ cont, /*Object?*/ params){
// summary:
// inserts (replaces) the given content into the given node. dojo/dom-construct.place(cont, node, "only")
// may be a better choice for simple HTML insertion.
// description:
// Unless you need to use the params capabilities of this method, you should use
// dojo/dom-construct.place(cont, node, "only"). dojo/dom-construct..place() has more robust support for injecting
// an HTML string into the DOM, but it only handles inserting an HTML string as DOM
// elements, or inserting a DOM node. dojo/dom-construct..place does not handle NodeList insertions
// dojo/dom-construct.place(cont, node, "only"). dojo/dom-construct.place() has more robust support for injecting
// an HTML string into the DOM, but it only handles inserting an HTML string as DOM
// elements, or inserting a DOM node. dojo/dom-construct.place does not handle NodeList insertions
// or the other capabilities as defined by the params object for this method.
// node:
// the parent element that will receive the content
// cont:
// the content to be set on the parent element.
// This can be an html string, a node reference or a NodeList, dojo/NodeList, Array or other enumerable list of nodes
// params:
// Optional flags/properties to configure the content-setting. See dojo/html/_ContentSetter
// example:
// A safe string/node/nodelist content replacement/injection with hooks for extension
// Example Usage:
// | html.set(node, "some string");
// | html.set(node, contentNode, {options});
// | html.set(node, myNode.childNodes, {options});
if(undefined == cont){
console.warn("dojo.html.set: no cont argument provided, using empty string");
cont = "";
}
if(!params){
// simple and fast
return html._setNodeContent(node, cont, true);
}else{
// more options but slower
// note the arguments are reversed in order, to match the convention for instantiation via the parser
var op = new html._ContentSetter(lang.mixin(
params,
{ content: cont, node: node }
));
return op.set();
}
}
};
lang.setObject("dojo.html", html);
return html;
});