Your IP : 10.1.73.149
/*
Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/
/**
* A lightweight representation of an HTML DOM structure.
* @constructor
* @example
*/
CKEDITOR.htmlParser.fragment = function()
{
/**
* The nodes contained in the root of this fragment.
* @type Array
* @example
* var fragment = CKEDITOR.htmlParser.fragment.fromHtml( '<b>Sample</b> Text' );
* alert( fragment.children.length ); "2"
*/
this.children = [];
/**
* Get the fragment parent. Should always be null.
* @type Object
* @default null
* @example
*/
this.parent = null;
/** @private */
this._ =
{
isBlockLike : true,
hasInlineStarted : false
};
};
(function()
{
// Elements which the end tag is marked as optional in the HTML 4.01 DTD
// (expect empty elements).
var optionalClose = {colgroup:1,dd:1,dt:1,li:1,option:1,p:1,td:1,tfoot:1,th:1,thead:1,tr:1};
// Block-level elements whose internal structure should be respected during
// parser fixing.
var nonBreakingBlocks = CKEDITOR.tools.extend(
{table:1,ul:1,ol:1,dl:1},
CKEDITOR.dtd.table, CKEDITOR.dtd.ul, CKEDITOR.dtd.ol, CKEDITOR.dtd.dl ),
listBlocks = CKEDITOR.dtd.$list, listItems = CKEDITOR.dtd.$listItem;
/**
* Creates a {@link CKEDITOR.htmlParser.fragment} from an HTML string.
* @param {String} fragmentHtml The HTML to be parsed, filling the fragment.
* @param {Number} [fixForBody=false] Wrap body with specified element if needed.
* @returns CKEDITOR.htmlParser.fragment The fragment created.
* @example
* var fragment = CKEDITOR.htmlParser.fragment.fromHtml( '<b>Sample</b> Text' );
* alert( fragment.children[0].name ); "b"
* alert( fragment.children[1].value ); " Text"
*/
CKEDITOR.htmlParser.fragment.fromHtml = function( fragmentHtml, fixForBody )
{
var parser = new CKEDITOR.htmlParser(),
html = [],
fragment = new CKEDITOR.htmlParser.fragment(),
pendingInline = [],
pendingBRs = [],
currentNode = fragment,
// Indicate we're inside a <pre> element, spaces should be touched differently.
inPre = false,
returnPoint;
function checkPending( newTagName )
{
var pendingBRsSent;
if ( pendingInline.length > 0 )
{
for ( var i = 0 ; i < pendingInline.length ; i++ )
{
var pendingElement = pendingInline[ i ],
pendingName = pendingElement.name,
pendingDtd = CKEDITOR.dtd[ pendingName ],
currentDtd = currentNode.name && CKEDITOR.dtd[ currentNode.name ];
if ( ( !currentDtd || currentDtd[ pendingName ] ) && ( !newTagName || !pendingDtd || pendingDtd[ newTagName ] || !CKEDITOR.dtd[ newTagName ] ) )
{
if ( !pendingBRsSent )
{
sendPendingBRs();
pendingBRsSent = 1;
}
// Get a clone for the pending element.
pendingElement = pendingElement.clone();
// Add it to the current node and make it the current,
// so the new element will be added inside of it.
pendingElement.parent = currentNode;
currentNode = pendingElement;
// Remove the pending element (back the index by one
// to properly process the next entry).
pendingInline.splice( i, 1 );
i--;
}
}
}
}
function sendPendingBRs()
{
while ( pendingBRs.length )
currentNode.add( pendingBRs.shift() );
}
function addElement( element, target, enforceCurrent )
{
target = target || currentNode || fragment;
// If the target is the fragment and this element can't go inside
// body (if fixForBody).
if ( fixForBody && !target.type )
{
var elementName, realElementName;
if ( element.attributes
&& ( realElementName =
element.attributes[ '_cke_real_element_type' ] ) )
elementName = realElementName;
else
elementName = element.name;
if ( elementName
&& !( elementName in CKEDITOR.dtd.$body )
&& !( elementName in CKEDITOR.dtd.$nonBodyContent ) )
{
var savedCurrent = currentNode;
// Create a <p> in the fragment.
currentNode = target;
parser.onTagOpen( fixForBody, {} );
// The new target now is the <p>.
target = currentNode;
if ( enforceCurrent )
currentNode = savedCurrent;
}
}
// Rtrim empty spaces on block end boundary. (#3585)
if ( element._.isBlockLike
&& element.name != 'pre' )
{
var length = element.children.length,
lastChild = element.children[ length - 1 ],
text;
if ( lastChild && lastChild.type == CKEDITOR.NODE_TEXT )
{
if ( !( text = CKEDITOR.tools.rtrim( lastChild.value ) ) )
element.children.length = length -1;
else
lastChild.value = text;
}
}
target.add( element );
if ( element.returnPoint )
{
currentNode = element.returnPoint;
delete element.returnPoint;
}
}
parser.onTagOpen = function( tagName, attributes, selfClosing )
{
var element = new CKEDITOR.htmlParser.element( tagName, attributes );
// "isEmpty" will be always "false" for unknown elements, so we
// must force it if the parser has identified it as a selfClosing tag.
if ( element.isUnknown && selfClosing )
element.isEmpty = true;
// This is a tag to be removed if empty, so do not add it immediately.
if ( CKEDITOR.dtd.$removeEmpty[ tagName ] )
{
pendingInline.push( element );
return;
}
else if ( tagName == 'pre' )
inPre = true;
else if ( tagName == 'br' && inPre )
{
currentNode.add( new CKEDITOR.htmlParser.text( '\n' ) );
return;
}
if ( tagName == 'br' )
{
pendingBRs.push( element );
return;
}
var currentName = currentNode.name;
var currentDtd = currentName
&& ( CKEDITOR.dtd[ currentName ]
|| ( currentNode._.isBlockLike ? CKEDITOR.dtd.div : CKEDITOR.dtd.span ) );
// If the element cannot be child of the current element.
if ( currentDtd // Fragment could receive any elements.
&& !element.isUnknown && !currentNode.isUnknown && !currentDtd[ tagName ] )
{
var reApply = false,
addPoint; // New position to start adding nodes.
// Fixing malformed nested lists by moving it into a previous list item. (#3828)
if ( tagName in listBlocks
&& currentName in listBlocks )
{
var children = currentNode.children,
lastChild = children[ children.length - 1 ];
// Establish the list item if it's not existed.
if ( !( lastChild && lastChild.name in listItems ) )
addElement( ( lastChild = new CKEDITOR.htmlParser.element( 'li' ) ), currentNode );
returnPoint = currentNode, addPoint = lastChild;
}
// If the element name is the same as the current element name,
// then just close the current one and append the new one to the
// parent. This situation usually happens with <p>, <li>, <dt> and
// <dd>, specially in IE. Do not enter in this if block in this case.
else if ( tagName == currentName )
{
addElement( currentNode, currentNode.parent );
}
else
{
if ( nonBreakingBlocks[ currentName ] )
{
if ( !returnPoint )
returnPoint = currentNode;
}
else
{
addElement( currentNode, currentNode.parent, true );
if ( !optionalClose[ currentName ] )
{
// The current element is an inline element, which
// cannot hold the new one. Put it in the pending list,
// and try adding the new one after it.
pendingInline.unshift( currentNode );
}
}
reApply = true;
}
if ( addPoint )
currentNode = addPoint;
// Try adding it to the return point, or the parent element.
else
currentNode = currentNode.returnPoint || currentNode.parent;
if ( reApply )
{
parser.onTagOpen.apply( this, arguments );
return;
}
}
checkPending( tagName );
sendPendingBRs();
element.parent = currentNode;
element.returnPoint = returnPoint;
returnPoint = 0;
if ( element.isEmpty )
addElement( element );
else
currentNode = element;
};
parser.onTagClose = function( tagName )
{
// Check if there is any pending tag to be closed.
for ( var i = pendingInline.length - 1 ; i >= 0 ; i-- )
{
// If found, just remove it from the list.
if ( tagName == pendingInline[ i ].name )
{
pendingInline.splice( i, 1 );
return;
}
}
var pendingAdd = [],
newPendingInline = [],
candidate = currentNode;
while ( candidate.type && candidate.name != tagName )
{
// If this is an inline element, add it to the pending list, if we're
// really closing one of the parents element later, they will continue
// after it.
if ( !candidate._.isBlockLike )
newPendingInline.unshift( candidate );
// This node should be added to it's parent at this point. But,
// it should happen only if the closing tag is really closing
// one of the nodes. So, for now, we just cache it.
pendingAdd.push( candidate );
candidate = candidate.parent;
}
if ( candidate.type )
{
// Add all elements that have been found in the above loop.
for ( i = 0 ; i < pendingAdd.length ; i++ )
{
var node = pendingAdd[ i ];
addElement( node, node.parent );
}
currentNode = candidate;
if ( currentNode.name == 'pre' )
inPre = false;
if ( candidate._.isBlockLike )
sendPendingBRs();
addElement( candidate, candidate.parent );
// The parent should start receiving new nodes now, except if
// addElement changed the currentNode.
if ( candidate == currentNode )
currentNode = currentNode.parent;
pendingInline = pendingInline.concat( newPendingInline );
}
if ( tagName == 'body' )
fixForBody = false;
};
parser.onText = function( text )
{
// Trim empty spaces at beginning of element contents except <pre>.
if ( !currentNode._.hasInlineStarted && !inPre )
{
text = CKEDITOR.tools.ltrim( text );
if ( text.length === 0 )
return;
}
sendPendingBRs();
checkPending();
if ( fixForBody
&& ( !currentNode.type || currentNode.name == 'body' )
&& CKEDITOR.tools.trim( text ) )
{
this.onTagOpen( fixForBody, {} );
}
// Shrinking consequential spaces into one single for all elements
// text contents.
if ( !inPre )
text = text.replace( /[\t\r\n ]{2,}|[\t\r\n]/g, ' ' );
currentNode.add( new CKEDITOR.htmlParser.text( text ) );
};
parser.onCDATA = function( cdata )
{
currentNode.add( new CKEDITOR.htmlParser.cdata( cdata ) );
};
parser.onComment = function( comment )
{
currentNode.add( new CKEDITOR.htmlParser.comment( comment ) );
};
// Parse it.
parser.parse( fragmentHtml );
sendPendingBRs();
// Close all pending nodes.
while ( currentNode.type )
{
var parent = currentNode.parent,
node = currentNode;
if ( fixForBody
&& ( !parent.type || parent.name == 'body' )
&& !CKEDITOR.dtd.$body[ node.name ] )
{
currentNode = parent;
parser.onTagOpen( fixForBody, {} );
parent = currentNode;
}
parent.add( node );
currentNode = parent;
}
return fragment;
};
CKEDITOR.htmlParser.fragment.prototype =
{
/**
* Adds a node to this fragment.
* @param {Object} node The node to be added. It can be any of of the
* following types: {@link CKEDITOR.htmlParser.element},
* {@link CKEDITOR.htmlParser.text} and
* {@link CKEDITOR.htmlParser.comment}.
* @example
*/
add : function( node )
{
var len = this.children.length,
previous = len > 0 && this.children[ len - 1 ] || null;
if ( previous )
{
// If the block to be appended is following text, trim spaces at
// the right of it.
if ( node._.isBlockLike && previous.type == CKEDITOR.NODE_TEXT )
{
previous.value = CKEDITOR.tools.rtrim( previous.value );
// If we have completely cleared the previous node.
if ( previous.value.length === 0 )
{
// Remove it from the list and add the node again.
this.children.pop();
this.add( node );
return;
}
}
previous.next = node;
}
node.previous = previous;
node.parent = this;
this.children.push( node );
this._.hasInlineStarted = node.type == CKEDITOR.NODE_TEXT || ( node.type == CKEDITOR.NODE_ELEMENT && !node._.isBlockLike );
},
/**
* Writes the fragment HTML to a CKEDITOR.htmlWriter.
* @param {CKEDITOR.htmlWriter} writer The writer to which write the HTML.
* @example
* var writer = new CKEDITOR.htmlWriter();
* var fragment = CKEDITOR.htmlParser.fragment.fromHtml( '<P><B>Example' );
* fragment.writeHtml( writer )
* alert( writer.getHtml() ); "<p><b>Example</b></p>"
*/
writeHtml : function( writer, filter )
{
var isChildrenFiltered;
this.filterChildren = function()
{
var writer = new CKEDITOR.htmlParser.basicWriter();
this.writeChildrenHtml.call( this, writer, filter, true );
var html = writer.getHtml();
this.children = new CKEDITOR.htmlParser.fragment.fromHtml( html ).children;
isChildrenFiltered = 1;
};
// Filtering the root fragment before anything else.
!this.name && filter && filter.onFragment( this );
this.writeChildrenHtml( writer, isChildrenFiltered ? null : filter );
},
writeChildrenHtml : function( writer, filter )
{
for ( var i = 0 ; i < this.children.length ; i++ )
this.children[i].writeHtml( writer, filter );
}
};
})();
;
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