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-rw-r--r--core/dom/iterator.js335
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diff --git a/core/dom/iterator.js b/core/dom/iterator.js
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-/**
- * @license Copyright (c) 2003-2013, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.html or http://ckeditor.com/license
- */
-
-/**
- * @ignore
- * File overview: DOM iterator, which iterates over list items, lines and paragraphs.
- */
-
-(function() {
- /**
- * Represents iterator class.
- *
- * @class CKEDITOR.dom.iterator
- * @constructor Creates an iterator class instance.
- * @param {CKEDITOR.dom.range} range
- * @todo
- */
- function iterator( range ) {
- if ( arguments.length < 1 )
- return;
-
- this.range = range;
- this.forceBrBreak = 0;
-
- // Whether include <br>s into the enlarged range.(#3730).
- this.enlargeBr = 1;
- this.enforceRealBlocks = 0;
-
- this._ || ( this._ = {} );
- }
-
- var beginWhitespaceRegex = /^[\r\n\t ]+$/,
- // Ignore bookmark nodes.(#3783)
- bookmarkGuard = CKEDITOR.dom.walker.bookmark( false, true ),
- whitespacesGuard = CKEDITOR.dom.walker.whitespaces( true ),
- skipGuard = function( node ) {
- return bookmarkGuard( node ) && whitespacesGuard( node );
- };
-
- // Get a reference for the next element, bookmark nodes are skipped.
- function getNextSourceNode( node, startFromSibling, lastNode ) {
- var next = node.getNextSourceNode( startFromSibling, null, lastNode );
- while ( !bookmarkGuard( next ) )
- next = next.getNextSourceNode( startFromSibling, null, lastNode );
- return next;
- }
-
- iterator.prototype = {
- /**
- * @todo
- */
- getNextParagraph: function( blockTag ) {
- blockTag = blockTag || 'p';
-
- // Block-less range should be checked first.
- if ( !CKEDITOR.dtd[ this.range.root.getName() ][ blockTag ] )
- return null;
-
- // The block element to be returned.
- var block;
-
- // The range object used to identify the paragraph contents.
- var range;
-
- // Indicats that the current element in the loop is the last one.
- var isLast;
-
- // Indicate at least one of the range boundaries is inside a preformat block.
- var touchPre;
-
- // Instructs to cleanup remaining BRs.
- var removePreviousBr, removeLastBr;
-
- // This is the first iteration. Let's initialize it.
- if ( !this._.started ) {
- range = this.range.clone();
-
- // Shrink the range to exclude harmful "noises" (#4087, #4450, #5435).
- range.shrink( CKEDITOR.NODE_ELEMENT, true );
-
- touchPre = range.endContainer.hasAscendant( 'pre', true ) || range.startContainer.hasAscendant( 'pre', true );
-
- range.enlarge( this.forceBrBreak && !touchPre || !this.enlargeBr ? CKEDITOR.ENLARGE_LIST_ITEM_CONTENTS : CKEDITOR.ENLARGE_BLOCK_CONTENTS );
-
- if ( !range.collapsed ) {
- var walker = new CKEDITOR.dom.walker( range.clone() ),
- ignoreBookmarkTextEvaluator = CKEDITOR.dom.walker.bookmark( true, true );
- // Avoid anchor inside bookmark inner text.
- walker.evaluator = ignoreBookmarkTextEvaluator;
- this._.nextNode = walker.next();
- // TODO: It's better to have walker.reset() used here.
- walker = new CKEDITOR.dom.walker( range.clone() );
- walker.evaluator = ignoreBookmarkTextEvaluator;
- var lastNode = walker.previous();
- this._.lastNode = lastNode.getNextSourceNode( true );
-
- // We may have an empty text node at the end of block due to [3770].
- // If that node is the lastNode, it would cause our logic to leak to the
- // next block.(#3887)
- if ( this._.lastNode && this._.lastNode.type == CKEDITOR.NODE_TEXT && !CKEDITOR.tools.trim( this._.lastNode.getText() ) && this._.lastNode.getParent().isBlockBoundary() ) {
- var testRange = this.range.clone();
- testRange.moveToPosition( this._.lastNode, CKEDITOR.POSITION_AFTER_END );
- if ( testRange.checkEndOfBlock() ) {
- var path = new CKEDITOR.dom.elementPath( testRange.endContainer, testRange.root );
- var lastBlock = path.block || path.blockLimit;
- this._.lastNode = lastBlock.getNextSourceNode( true );
- }
- }
-
- // Probably the document end is reached, we need a marker node.
- if ( !this._.lastNode ) {
- this._.lastNode = this._.docEndMarker = range.document.createText( '' );
- this._.lastNode.insertAfter( lastNode );
- }
-
- // Let's reuse this variable.
- range = null;
- }
-
- this._.started = 1;
- }
-
- var currentNode = this._.nextNode;
- lastNode = this._.lastNode;
-
- this._.nextNode = null;
- while ( currentNode ) {
- // closeRange indicates that a paragraph boundary has been found,
- // so the range can be closed.
- var closeRange = 0,
- parentPre = currentNode.hasAscendant( 'pre' );
-
- // includeNode indicates that the current node is good to be part
- // of the range. By default, any non-element node is ok for it.
- var includeNode = ( currentNode.type != CKEDITOR.NODE_ELEMENT ),
- continueFromSibling = 0;
-
- // If it is an element node, let's check if it can be part of the
- // range.
- if ( !includeNode ) {
- var nodeName = currentNode.getName();
-
- if ( currentNode.isBlockBoundary( this.forceBrBreak && !parentPre && { br:1 } ) ) {
- // <br> boundaries must be part of the range. It will
- // happen only if ForceBrBreak.
- if ( nodeName == 'br' )
- includeNode = 1;
- else if ( !range && !currentNode.getChildCount() && nodeName != 'hr' ) {
- // If we have found an empty block, and haven't started
- // the range yet, it means we must return this block.
- block = currentNode;
- isLast = currentNode.equals( lastNode );
- break;
- }
-
- // The range must finish right before the boundary,
- // including possibly skipped empty spaces. (#1603)
- if ( range ) {
- range.setEndAt( currentNode, CKEDITOR.POSITION_BEFORE_START );
-
- // The found boundary must be set as the next one at this
- // point. (#1717)
- if ( nodeName != 'br' )
- this._.nextNode = currentNode;
- }
-
- closeRange = 1;
- } else {
- // If we have child nodes, let's check them.
- if ( currentNode.getFirst() ) {
- // If we don't have a range yet, let's start it.
- if ( !range ) {
- range = this.range.clone();
- range.setStartAt( currentNode, CKEDITOR.POSITION_BEFORE_START );
- }
-
- currentNode = currentNode.getFirst();
- continue;
- }
- includeNode = 1;
- }
- } else if ( currentNode.type == CKEDITOR.NODE_TEXT ) {
- // Ignore normal whitespaces (i.e. not including &nbsp; or
- // other unicode whitespaces) before/after a block node.
- if ( beginWhitespaceRegex.test( currentNode.getText() ) )
- includeNode = 0;
- }
-
- // The current node is good to be part of the range and we are
- // starting a new range, initialize it first.
- if ( includeNode && !range ) {
- range = this.range.clone();
- range.setStartAt( currentNode, CKEDITOR.POSITION_BEFORE_START );
- }
-
- // The last node has been found.
- isLast = ( ( !closeRange || includeNode ) && currentNode.equals( lastNode ) );
-
- // If we are in an element boundary, let's check if it is time
- // to close the range, otherwise we include the parent within it.
- if ( range && !closeRange ) {
- while ( !currentNode.getNext( skipGuard ) && !isLast ) {
- var parentNode = currentNode.getParent();
-
- if ( parentNode.isBlockBoundary( this.forceBrBreak && !parentPre && { br:1 } ) ) {
- closeRange = 1;
- includeNode = 0;
- isLast = isLast || ( parentNode.equals( lastNode ) );
- // Make sure range includes bookmarks at the end of the block. (#7359)
- range.setEndAt( parentNode, CKEDITOR.POSITION_BEFORE_END );
- break;
- }
-
- currentNode = parentNode;
- includeNode = 1;
- isLast = ( currentNode.equals( lastNode ) );
- continueFromSibling = 1;
- }
- }
-
- // Now finally include the node.
- if ( includeNode )
- range.setEndAt( currentNode, CKEDITOR.POSITION_AFTER_END );
-
- currentNode = getNextSourceNode( currentNode, continueFromSibling, lastNode );
- isLast = !currentNode;
-
- // We have found a block boundary. Let's close the range and move out of the
- // loop.
- if ( isLast || ( closeRange && range ) )
- break;
- }
-
- // Now, based on the processed range, look for (or create) the block to be returned.
- if ( !block ) {
- // If no range has been found, this is the end.
- if ( !range ) {
- this._.docEndMarker && this._.docEndMarker.remove();
- this._.nextNode = null;
- return null;
- }
-
- var startPath = new CKEDITOR.dom.elementPath( range.startContainer, range.root );
- var startBlockLimit = startPath.blockLimit,
- checkLimits = { div:1,th:1,td:1 };
- block = startPath.block;
-
- if ( !block && startBlockLimit && !this.enforceRealBlocks && checkLimits[ startBlockLimit.getName() ] && range.checkStartOfBlock() && range.checkEndOfBlock() && !startBlockLimit.equals( range.root ) )
- block = startBlockLimit;
- else if ( !block || ( this.enforceRealBlocks && block.getName() == 'li' ) ) {
- // Create the fixed block.
- block = this.range.document.createElement( blockTag );
-
- // Move the contents of the temporary range to the fixed block.
- range.extractContents().appendTo( block );
- block.trim();
-
- // Insert the fixed block into the DOM.
- range.insertNode( block );
-
- removePreviousBr = removeLastBr = true;
- } else if ( block.getName() != 'li' ) {
- // If the range doesn't includes the entire contents of the
- // block, we must split it, isolating the range in a dedicated
- // block.
- if ( !range.checkStartOfBlock() || !range.checkEndOfBlock() ) {
- // The resulting block will be a clone of the current one.
- block = block.clone( false );
-
- // Extract the range contents, moving it to the new block.
- range.extractContents().appendTo( block );
- block.trim();
-
- // Split the block. At this point, the range will be in the
- // right position for our intents.
- var splitInfo = range.splitBlock();
-
- removePreviousBr = !splitInfo.wasStartOfBlock;
- removeLastBr = !splitInfo.wasEndOfBlock;
-
- // Insert the new block into the DOM.
- range.insertNode( block );
- }
- } else if ( !isLast ) {
- // LIs are returned as is, with all their children (due to the
- // nested lists). But, the next node is the node right after
- // the current range, which could be an <li> child (nested
- // lists) or the next sibling <li>.
-
- this._.nextNode = ( block.equals( lastNode ) ? null : getNextSourceNode( range.getBoundaryNodes().endNode, 1, lastNode ) );
- }
- }
-
- if ( removePreviousBr ) {
- var previousSibling = block.getPrevious();
- if ( previousSibling && previousSibling.type == CKEDITOR.NODE_ELEMENT ) {
- if ( previousSibling.getName() == 'br' )
- previousSibling.remove();
- else if ( previousSibling.getLast() && previousSibling.getLast().$.nodeName.toLowerCase() == 'br' )
- previousSibling.getLast().remove();
- }
- }
-
- if ( removeLastBr ) {
- var lastChild = block.getLast();
- if ( lastChild && lastChild.type == CKEDITOR.NODE_ELEMENT && lastChild.getName() == 'br' ) {
- // Take care not to remove the block expanding <br> in non-IE browsers.
- if ( CKEDITOR.env.ie || lastChild.getPrevious( bookmarkGuard ) || lastChild.getNext( bookmarkGuard ) )
- lastChild.remove();
- }
- }
-
- // Get a reference for the next element. This is important because the
- // above block can be removed or changed, so we can rely on it for the
- // next interation.
- if ( !this._.nextNode ) {
- this._.nextNode = ( isLast || block.equals( lastNode ) || !lastNode ) ? null : getNextSourceNode( block, 1, lastNode );
- }
-
- return block;
- }
- };
-
- /**
- * Creates {CKEDITOR.dom.iterator} instance for this range.
- *
- * @member CKEDITOR.dom.range
- * @returns {CKEDITOR.dom.iterator}
- */
- CKEDITOR.dom.range.prototype.createIterator = function() {
- return new iterator( this );
- };
-})();
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