1 | /*
|
---|
2 | Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.
|
---|
3 | For licensing, see LICENSE.html or http://ckeditor.com/license
|
---|
4 | */
|
---|
5 |
|
---|
6 | /**
|
---|
7 | * @file DOM iterator, which iterates over list items, lines and paragraphs.
|
---|
8 | */
|
---|
9 |
|
---|
10 | CKEDITOR.plugins.add( 'domiterator' );
|
---|
11 |
|
---|
12 | (function()
|
---|
13 | {
|
---|
14 | /**
|
---|
15 | * @name CKEDITOR.dom.iterator
|
---|
16 | */
|
---|
17 | function iterator( range )
|
---|
18 | {
|
---|
19 | if ( arguments.length < 1 )
|
---|
20 | return;
|
---|
21 |
|
---|
22 | this.range = range;
|
---|
23 | this.forceBrBreak = false;
|
---|
24 |
|
---|
25 | // Whether include <br>s into the enlarged range.(#3730).
|
---|
26 | this.enlargeBr = true;
|
---|
27 | this.enforceRealBlocks = false;
|
---|
28 |
|
---|
29 | this._ || ( this._ = {} );
|
---|
30 | }
|
---|
31 |
|
---|
32 | var beginWhitespaceRegex = /^[\r\n\t ]+$/,
|
---|
33 | isBookmark = CKEDITOR.dom.walker.bookmark();
|
---|
34 |
|
---|
35 | iterator.prototype = {
|
---|
36 | getNextParagraph : function( blockTag )
|
---|
37 | {
|
---|
38 | // The block element to be returned.
|
---|
39 | var block;
|
---|
40 |
|
---|
41 | // The range object used to identify the paragraph contents.
|
---|
42 | var range;
|
---|
43 |
|
---|
44 | // Indicats that the current element in the loop is the last one.
|
---|
45 | var isLast;
|
---|
46 |
|
---|
47 | // Instructs to cleanup remaining BRs.
|
---|
48 | var removePreviousBr, removeLastBr;
|
---|
49 |
|
---|
50 | // This is the first iteration. Let's initialize it.
|
---|
51 | if ( !this._.lastNode )
|
---|
52 | {
|
---|
53 | range = this.range.clone();
|
---|
54 | range.enlarge( this.forceBrBreak || !this.enlargeBr ?
|
---|
55 | CKEDITOR.ENLARGE_LIST_ITEM_CONTENTS : CKEDITOR.ENLARGE_BLOCK_CONTENTS );
|
---|
56 |
|
---|
57 | var walker = new CKEDITOR.dom.walker( range ),
|
---|
58 | ignoreBookmarkTextEvaluator = CKEDITOR.dom.walker.bookmark( true, true );
|
---|
59 | // Avoid anchor inside bookmark inner text.
|
---|
60 | walker.evaluator = ignoreBookmarkTextEvaluator;
|
---|
61 | this._.nextNode = walker.next();
|
---|
62 | // TODO: It's better to have walker.reset() used here.
|
---|
63 | walker = new CKEDITOR.dom.walker( range );
|
---|
64 | walker.evaluator = ignoreBookmarkTextEvaluator;
|
---|
65 | var lastNode = walker.previous();
|
---|
66 | this._.lastNode = lastNode.getNextSourceNode( true );
|
---|
67 |
|
---|
68 | // We may have an empty text node at the end of block due to [3770].
|
---|
69 | // If that node is the lastNode, it would cause our logic to leak to the
|
---|
70 | // next block.(#3887)
|
---|
71 | if ( this._.lastNode &&
|
---|
72 | this._.lastNode.type == CKEDITOR.NODE_TEXT &&
|
---|
73 | !CKEDITOR.tools.trim( this._.lastNode.getText( ) ) &&
|
---|
74 | this._.lastNode.getParent().isBlockBoundary() )
|
---|
75 | {
|
---|
76 | var testRange = new CKEDITOR.dom.range( range.document );
|
---|
77 | testRange.moveToPosition( this._.lastNode, CKEDITOR.POSITION_AFTER_END );
|
---|
78 | if ( testRange.checkEndOfBlock() )
|
---|
79 | {
|
---|
80 | var path = new CKEDITOR.dom.elementPath( testRange.endContainer );
|
---|
81 | var lastBlock = path.block || path.blockLimit;
|
---|
82 | this._.lastNode = lastBlock.getNextSourceNode( true );
|
---|
83 | }
|
---|
84 | }
|
---|
85 |
|
---|
86 | // Probably the document end is reached, we need a marker node.
|
---|
87 | if ( !this._.lastNode )
|
---|
88 | {
|
---|
89 | this._.lastNode = this._.docEndMarker = range.document.createText( '' );
|
---|
90 | this._.lastNode.insertAfter( lastNode );
|
---|
91 | }
|
---|
92 |
|
---|
93 | // Let's reuse this variable.
|
---|
94 | range = null;
|
---|
95 | }
|
---|
96 |
|
---|
97 | var currentNode = this._.nextNode;
|
---|
98 | lastNode = this._.lastNode;
|
---|
99 |
|
---|
100 | this._.nextNode = null;
|
---|
101 | while ( currentNode )
|
---|
102 | {
|
---|
103 | // closeRange indicates that a paragraph boundary has been found,
|
---|
104 | // so the range can be closed.
|
---|
105 | var closeRange = false;
|
---|
106 |
|
---|
107 | // includeNode indicates that the current node is good to be part
|
---|
108 | // of the range. By default, any non-element node is ok for it.
|
---|
109 | var includeNode = ( currentNode.type != CKEDITOR.NODE_ELEMENT ),
|
---|
110 | continueFromSibling = false;
|
---|
111 |
|
---|
112 | // If it is an element node, let's check if it can be part of the
|
---|
113 | // range.
|
---|
114 | if ( !includeNode )
|
---|
115 | {
|
---|
116 | var nodeName = currentNode.getName();
|
---|
117 |
|
---|
118 | if ( currentNode.isBlockBoundary( this.forceBrBreak && { br : 1 } ) )
|
---|
119 | {
|
---|
120 | // <br> boundaries must be part of the range. It will
|
---|
121 | // happen only if ForceBrBreak.
|
---|
122 | if ( nodeName == 'br' )
|
---|
123 | includeNode = true;
|
---|
124 | else if ( !range && !currentNode.getChildCount() && nodeName != 'hr' )
|
---|
125 | {
|
---|
126 | // If we have found an empty block, and haven't started
|
---|
127 | // the range yet, it means we must return this block.
|
---|
128 | block = currentNode;
|
---|
129 | isLast = currentNode.equals( lastNode );
|
---|
130 | break;
|
---|
131 | }
|
---|
132 |
|
---|
133 | // The range must finish right before the boundary,
|
---|
134 | // including possibly skipped empty spaces. (#1603)
|
---|
135 | if ( range )
|
---|
136 | {
|
---|
137 | range.setEndAt( currentNode, CKEDITOR.POSITION_BEFORE_START );
|
---|
138 |
|
---|
139 | // The found boundary must be set as the next one at this
|
---|
140 | // point. (#1717)
|
---|
141 | if ( nodeName != 'br' )
|
---|
142 | this._.nextNode = currentNode;
|
---|
143 | }
|
---|
144 |
|
---|
145 | closeRange = true;
|
---|
146 | }
|
---|
147 | else
|
---|
148 | {
|
---|
149 | // If we have child nodes, let's check them.
|
---|
150 | if ( currentNode.getFirst() )
|
---|
151 | {
|
---|
152 | // If we don't have a range yet, let's start it.
|
---|
153 | if ( !range )
|
---|
154 | {
|
---|
155 | range = new CKEDITOR.dom.range( this.range.document );
|
---|
156 | range.setStartAt( currentNode, CKEDITOR.POSITION_BEFORE_START );
|
---|
157 | }
|
---|
158 |
|
---|
159 | currentNode = currentNode.getFirst();
|
---|
160 | continue;
|
---|
161 | }
|
---|
162 | includeNode = true;
|
---|
163 | }
|
---|
164 | }
|
---|
165 | else if ( currentNode.type == CKEDITOR.NODE_TEXT )
|
---|
166 | {
|
---|
167 | // Ignore normal whitespaces (i.e. not including or
|
---|
168 | // other unicode whitespaces) before/after a block node.
|
---|
169 | if ( beginWhitespaceRegex.test( currentNode.getText() ) )
|
---|
170 | includeNode = false;
|
---|
171 | }
|
---|
172 |
|
---|
173 | // The current node is good to be part of the range and we are
|
---|
174 | // starting a new range, initialize it first.
|
---|
175 | if ( includeNode && !range )
|
---|
176 | {
|
---|
177 | range = new CKEDITOR.dom.range( this.range.document );
|
---|
178 | range.setStartAt( currentNode, CKEDITOR.POSITION_BEFORE_START );
|
---|
179 | }
|
---|
180 |
|
---|
181 | // The last node has been found.
|
---|
182 | isLast = ( ( !closeRange || includeNode ) && currentNode.equals( lastNode ) );
|
---|
183 |
|
---|
184 | // If we are in an element boundary, let's check if it is time
|
---|
185 | // to close the range, otherwise we include the parent within it.
|
---|
186 | if ( range && !closeRange )
|
---|
187 | {
|
---|
188 | while ( !currentNode.getNext() && !isLast )
|
---|
189 | {
|
---|
190 | var parentNode = currentNode.getParent();
|
---|
191 |
|
---|
192 | if ( parentNode.isBlockBoundary( this.forceBrBreak && { br : 1 } ) )
|
---|
193 | {
|
---|
194 | closeRange = true;
|
---|
195 | isLast = isLast || ( parentNode.equals( lastNode) );
|
---|
196 | break;
|
---|
197 | }
|
---|
198 |
|
---|
199 | currentNode = parentNode;
|
---|
200 | includeNode = true;
|
---|
201 | isLast = ( currentNode.equals( lastNode ) );
|
---|
202 | continueFromSibling = true;
|
---|
203 | }
|
---|
204 | }
|
---|
205 |
|
---|
206 | // Now finally include the node.
|
---|
207 | if ( includeNode )
|
---|
208 | range.setEndAt( currentNode, CKEDITOR.POSITION_AFTER_END );
|
---|
209 |
|
---|
210 | currentNode = currentNode.getNextSourceNode( continueFromSibling, null, lastNode );
|
---|
211 | isLast = !currentNode;
|
---|
212 |
|
---|
213 | // We have found a block boundary. Let's close the range and move out of the
|
---|
214 | // loop.
|
---|
215 | if ( ( closeRange || isLast ) && range )
|
---|
216 | {
|
---|
217 | var boundaryNodes = range.getBoundaryNodes(),
|
---|
218 | startPath = new CKEDITOR.dom.elementPath( range.startContainer );
|
---|
219 |
|
---|
220 | // Drop the range if it only contains bookmark nodes, and is
|
---|
221 | // not because of the original collapsed range. (#4087,#4450)
|
---|
222 | if ( boundaryNodes.startNode.getParent().equals( startPath.blockLimit )
|
---|
223 | && isBookmark( boundaryNodes.startNode ) && isBookmark( boundaryNodes.endNode ) )
|
---|
224 | {
|
---|
225 | range = null;
|
---|
226 | this._.nextNode = null;
|
---|
227 | }
|
---|
228 | else
|
---|
229 | break;
|
---|
230 | }
|
---|
231 |
|
---|
232 | if ( isLast )
|
---|
233 | break;
|
---|
234 |
|
---|
235 | }
|
---|
236 |
|
---|
237 | // Now, based on the processed range, look for (or create) the block to be returned.
|
---|
238 | if ( !block )
|
---|
239 | {
|
---|
240 | // If no range has been found, this is the end.
|
---|
241 | if ( !range )
|
---|
242 | {
|
---|
243 | this._.docEndMarker && this._.docEndMarker.remove();
|
---|
244 | this._.nextNode = null;
|
---|
245 | return null;
|
---|
246 | }
|
---|
247 |
|
---|
248 | startPath = new CKEDITOR.dom.elementPath( range.startContainer );
|
---|
249 | var startBlockLimit = startPath.blockLimit,
|
---|
250 | checkLimits = { div : 1, th : 1, td : 1 };
|
---|
251 | block = startPath.block;
|
---|
252 |
|
---|
253 | if ( !block
|
---|
254 | && !this.enforceRealBlocks
|
---|
255 | && checkLimits[ startBlockLimit.getName() ]
|
---|
256 | && range.checkStartOfBlock()
|
---|
257 | && range.checkEndOfBlock() )
|
---|
258 | block = startBlockLimit;
|
---|
259 | else if ( !block || ( this.enforceRealBlocks && block.getName() == 'li' ) )
|
---|
260 | {
|
---|
261 | // Create the fixed block.
|
---|
262 | block = this.range.document.createElement( blockTag || 'p' );
|
---|
263 |
|
---|
264 | // Move the contents of the temporary range to the fixed block.
|
---|
265 | range.extractContents().appendTo( block );
|
---|
266 | block.trim();
|
---|
267 |
|
---|
268 | // Insert the fixed block into the DOM.
|
---|
269 | range.insertNode( block );
|
---|
270 |
|
---|
271 | removePreviousBr = removeLastBr = true;
|
---|
272 | }
|
---|
273 | else if ( block.getName() != 'li' )
|
---|
274 | {
|
---|
275 | // If the range doesn't includes the entire contents of the
|
---|
276 | // block, we must split it, isolating the range in a dedicated
|
---|
277 | // block.
|
---|
278 | if ( !range.checkStartOfBlock() || !range.checkEndOfBlock() )
|
---|
279 | {
|
---|
280 | // The resulting block will be a clone of the current one.
|
---|
281 | block = block.clone( false );
|
---|
282 |
|
---|
283 | // Extract the range contents, moving it to the new block.
|
---|
284 | range.extractContents().appendTo( block );
|
---|
285 | block.trim();
|
---|
286 |
|
---|
287 | // Split the block. At this point, the range will be in the
|
---|
288 | // right position for our intents.
|
---|
289 | var splitInfo = range.splitBlock();
|
---|
290 |
|
---|
291 | removePreviousBr = !splitInfo.wasStartOfBlock;
|
---|
292 | removeLastBr = !splitInfo.wasEndOfBlock;
|
---|
293 |
|
---|
294 | // Insert the new block into the DOM.
|
---|
295 | range.insertNode( block );
|
---|
296 | }
|
---|
297 | }
|
---|
298 | else if ( !isLast )
|
---|
299 | {
|
---|
300 | // LIs are returned as is, with all their children (due to the
|
---|
301 | // nested lists). But, the next node is the node right after
|
---|
302 | // the current range, which could be an <li> child (nested
|
---|
303 | // lists) or the next sibling <li>.
|
---|
304 |
|
---|
305 | this._.nextNode = ( block.equals( lastNode ) ? null :
|
---|
306 | range.getBoundaryNodes().endNode.getNextSourceNode( true, null, lastNode ) );
|
---|
307 | }
|
---|
308 | }
|
---|
309 |
|
---|
310 | if ( removePreviousBr )
|
---|
311 | {
|
---|
312 | var previousSibling = block.getPrevious();
|
---|
313 | if ( previousSibling && previousSibling.type == CKEDITOR.NODE_ELEMENT )
|
---|
314 | {
|
---|
315 | if ( previousSibling.getName() == 'br' )
|
---|
316 | previousSibling.remove();
|
---|
317 | else if ( previousSibling.getLast() && previousSibling.getLast().$.nodeName.toLowerCase() == 'br' )
|
---|
318 | previousSibling.getLast().remove();
|
---|
319 | }
|
---|
320 | }
|
---|
321 |
|
---|
322 | if ( removeLastBr )
|
---|
323 | {
|
---|
324 | // Ignore bookmark nodes.(#3783)
|
---|
325 | var bookmarkGuard = CKEDITOR.dom.walker.bookmark( false, true );
|
---|
326 |
|
---|
327 | var lastChild = block.getLast();
|
---|
328 | if ( lastChild && lastChild.type == CKEDITOR.NODE_ELEMENT && lastChild.getName() == 'br' )
|
---|
329 | {
|
---|
330 | // Take care not to remove the block expanding <br> in non-IE browsers.
|
---|
331 | if ( CKEDITOR.env.ie
|
---|
332 | || lastChild.getPrevious( bookmarkGuard )
|
---|
333 | || lastChild.getNext( bookmarkGuard ) )
|
---|
334 | lastChild.remove();
|
---|
335 | }
|
---|
336 | }
|
---|
337 |
|
---|
338 | // Get a reference for the next element. This is important because the
|
---|
339 | // above block can be removed or changed, so we can rely on it for the
|
---|
340 | // next interation.
|
---|
341 | if ( !this._.nextNode )
|
---|
342 | {
|
---|
343 | this._.nextNode = ( isLast || block.equals( lastNode ) ) ? null :
|
---|
344 | block.getNextSourceNode( true, null, lastNode );
|
---|
345 | }
|
---|
346 |
|
---|
347 | return block;
|
---|
348 | }
|
---|
349 | };
|
---|
350 |
|
---|
351 | CKEDITOR.dom.range.prototype.createIterator = function()
|
---|
352 | {
|
---|
353 | return new iterator( this );
|
---|
354 | };
|
---|
355 | })();
|
---|