www.gusucode.com > 适用JSP的fckeditor-java-2.4网页编辑器源码程序 > 适用JSP的fckeditor-java-2.4网页编辑器/fckeditorjava2.4开发包/fckeditor-java-2.4开发包/java-demo/src/main/webapp/fckeditor/editor/_source/classes/fckeditingarea.js
/*
* FCKeditor - The text editor for Internet - http://www.fckeditor.net
* Copyright (C) 2003-2008 Frederico Caldeira Knabben
*
* == BEGIN LICENSE ==
*
* Licensed under the terms of any of the following licenses at your
* choice:
*
* - GNU General Public License Version 2 or later (the "GPL")
* http://www.gnu.org/licenses/gpl.html
*
* - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
* http://www.gnu.org/licenses/lgpl.html
*
* - Mozilla Public License Version 1.1 or later (the "MPL")
* http://www.mozilla.org/MPL/MPL-1.1.html
*
* == END LICENSE ==
*
* FCKEditingArea Class: renders an editable area.
*/
/**
* @constructor
* @param {String} targetElement The element that will hold the editing area. Any child element present in the target will be deleted.
*/
var FCKEditingArea = function( targetElement )
{
this.TargetElement = targetElement ;
this.Mode = FCK_EDITMODE_WYSIWYG ;
if ( FCK.IECleanup )
FCK.IECleanup.AddItem( this, FCKEditingArea_Cleanup ) ;
}
/**
* @param {String} html The complete HTML for the page, including DOCTYPE and the <html> tag.
*/
FCKEditingArea.prototype.Start = function( html, secondCall )
{
var eTargetElement = this.TargetElement ;
var oTargetDocument = FCKTools.GetElementDocument( eTargetElement ) ;
// Remove all child nodes from the target.
while( eTargetElement.firstChild )
eTargetElement.removeChild( eTargetElement.firstChild ) ;
if ( this.Mode == FCK_EDITMODE_WYSIWYG )
{
// For FF, document.domain must be set only when different, otherwhise
// we'll strangely have "Permission denied" issues.
if ( FCK_IS_CUSTOM_DOMAIN )
html = '<script>document.domain="' + FCK_RUNTIME_DOMAIN + '";</script>' + html ;
// IE has a bug with the <base> tag... it must have a </base> closer,
// otherwise the all successive tags will be set as children nodes of the <base>.
if ( FCKBrowserInfo.IsIE )
html = html.replace( /(<base[^>]*?)\s*\/?>(?!\s*<\/base>)/gi, '$1></base>' ) ;
else if ( !secondCall )
{
// Gecko moves some tags out of the body to the head, so we must use
// innerHTML to set the body contents (SF BUG 1526154).
// Extract the BODY contents from the html.
var oMatchBefore = html.match( FCKRegexLib.BeforeBody ) ;
var oMatchAfter = html.match( FCKRegexLib.AfterBody ) ;
if ( oMatchBefore && oMatchAfter )
{
var sBody = html.substr( oMatchBefore[1].length,
html.length - oMatchBefore[1].length - oMatchAfter[1].length ) ; // This is the BODY tag contents.
html =
oMatchBefore[1] + // This is the HTML until the <body...> tag, inclusive.
' ' +
oMatchAfter[1] ; // This is the HTML from the </body> tag, inclusive.
// If nothing in the body, place a BOGUS tag so the cursor will appear.
if ( FCKBrowserInfo.IsGecko && ( sBody.length == 0 || FCKRegexLib.EmptyParagraph.test( sBody ) ) )
sBody = '<br type="_moz">' ;
this._BodyHTML = sBody ;
}
else
this._BodyHTML = html ; // Invalid HTML input.
}
// Create the editing area IFRAME.
var oIFrame = this.IFrame = oTargetDocument.createElement( 'iframe' ) ;
// IE: Avoid JavaScript errors thrown by the editing are source (like tags events).
// See #1055.
var sOverrideError = '<script type="text/javascript" _fcktemp="true">window.onerror=function(){return true;};</script>' ;
oIFrame.frameBorder = 0 ;
oIFrame.style.width = oIFrame.style.height = '100%' ;
if ( FCK_IS_CUSTOM_DOMAIN && FCKBrowserInfo.IsIE )
{
window._FCKHtmlToLoad = html.replace( /<head>/i, '<head>' + sOverrideError ) ;
oIFrame.src = 'javascript:void( (function(){' +
'document.open() ;' +
'document.domain="' + document.domain + '" ;' +
'document.write( window.parent._FCKHtmlToLoad );' +
'document.close() ;' +
'window.parent._FCKHtmlToLoad = null ;' +
'})() )' ;
}
else if ( !FCKBrowserInfo.IsGecko )
{
// Firefox will render the tables inside the body in Quirks mode if the
// source of the iframe is set to javascript. see #515
oIFrame.src = 'javascript:void(0)' ;
}
// Append the new IFRAME to the target. For IE, it must be done after
// setting the "src", to avoid the "secure/unsecure" message under HTTPS.
eTargetElement.appendChild( oIFrame ) ;
// Get the window and document objects used to interact with the newly created IFRAME.
this.Window = oIFrame.contentWindow ;
// IE: Avoid JavaScript errors thrown by the editing are source (like tags events).
// TODO: This error handler is not being fired.
// this.Window.onerror = function() { alert( 'Error!' ) ; return true ; }
if ( !FCK_IS_CUSTOM_DOMAIN || !FCKBrowserInfo.IsIE )
{
var oDoc = this.Window.document ;
oDoc.open() ;
oDoc.write( html.replace( /<head>/i, '<head>' + sOverrideError ) ) ;
oDoc.close() ;
}
if ( FCKBrowserInfo.IsAIR )
FCKAdobeAIR.EditingArea_Start( oDoc, html ) ;
// Firefox 1.0.x is buggy... ohh yes... so let's do it two times and it
// will magically work.
if ( FCKBrowserInfo.IsGecko10 && !secondCall )
{
this.Start( html, true ) ;
return ;
}
if ( oIFrame.readyState && oIFrame.readyState != 'completed' )
{
var editArea = this ;
( oIFrame.onreadystatechange = function()
{
if ( oIFrame.readyState == 'complete' )
{
oIFrame.onreadystatechange = null ;
editArea.Window._FCKEditingArea = editArea ;
FCKEditingArea_CompleteStart.call( editArea.Window ) ;
}
// It happened that IE changed the state to "complete" after the
// "if" and before the "onreadystatechange" assignement, making we
// lost the event call, so we do a manual call just to be sure.
} )() ;
}
else
{
this.Window._FCKEditingArea = this ;
// FF 1.0.x is buggy... we must wait a lot to enable editing because
// sometimes the content simply disappears, for example when pasting
// "bla1!<img src='some_url'>!bla2" in the source and then switching
// back to design.
if ( FCKBrowserInfo.IsGecko10 )
this.Window.setTimeout( FCKEditingArea_CompleteStart, 500 ) ;
else
FCKEditingArea_CompleteStart.call( this.Window ) ;
}
}
else
{
var eTextarea = this.Textarea = oTargetDocument.createElement( 'textarea' ) ;
eTextarea.className = 'SourceField' ;
eTextarea.dir = 'ltr' ;
FCKDomTools.SetElementStyles( eTextarea,
{
width : '100%',
height : '100%',
border : 'none',
resize : 'none',
outline : 'none'
} ) ;
eTargetElement.appendChild( eTextarea ) ;
eTextarea.value = html ;
// Fire the "OnLoad" event.
FCKTools.RunFunction( this.OnLoad ) ;
}
}
// "this" here is FCKEditingArea.Window
function FCKEditingArea_CompleteStart()
{
// On Firefox, the DOM takes a little to become available. So we must wait for it in a loop.
if ( !this.document.body )
{
this.setTimeout( FCKEditingArea_CompleteStart, 50 ) ;
return ;
}
var oEditorArea = this._FCKEditingArea ;
// Save this reference to be re-used later.
oEditorArea.Document = oEditorArea.Window.document ;
oEditorArea.MakeEditable() ;
// Fire the "OnLoad" event.
FCKTools.RunFunction( oEditorArea.OnLoad ) ;
}
FCKEditingArea.prototype.MakeEditable = function()
{
var oDoc = this.Document ;
if ( FCKBrowserInfo.IsIE )
{
// Kludge for #141 and #523
oDoc.body.disabled = true ;
oDoc.body.contentEditable = true ;
oDoc.body.removeAttribute( "disabled" ) ;
/* The following commands don't throw errors, but have no effect.
oDoc.execCommand( 'AutoDetect', false, false ) ;
oDoc.execCommand( 'KeepSelection', false, true ) ;
*/
}
else
{
try
{
// Disable Firefox 2 Spell Checker.
oDoc.body.spellcheck = ( this.FFSpellChecker !== false ) ;
if ( this._BodyHTML )
{
oDoc.body.innerHTML = this._BodyHTML ;
oDoc.body.offsetLeft ; // Don't remove, this is a hack to fix Opera 9.50, see #2264.
this._BodyHTML = null ;
}
oDoc.designMode = 'on' ;
// Tell Gecko (Firefox 1.5+) to enable or not live resizing of objects (by Alfonso Martinez)
oDoc.execCommand( 'enableObjectResizing', false, !FCKConfig.DisableObjectResizing ) ;
// Disable the standard table editing features of Firefox.
oDoc.execCommand( 'enableInlineTableEditing', false, !FCKConfig.DisableFFTableHandles ) ;
}
catch (e)
{
// In Firefox if the iframe is initially hidden it can't be set to designMode and it raises an exception
// So we set up a DOM Mutation event Listener on the HTML, as it will raise several events when the document is visible again
FCKTools.AddEventListener( this.Window.frameElement, 'DOMAttrModified', FCKEditingArea_Document_AttributeNodeModified ) ;
}
}
}
// This function processes the notifications of the DOM Mutation event on the document
// We use it to know that the document will be ready to be editable again (or we hope so)
function FCKEditingArea_Document_AttributeNodeModified( evt )
{
var editingArea = evt.currentTarget.contentWindow._FCKEditingArea ;
// We want to run our function after the events no longer fire, so we can know that it's a stable situation
if ( editingArea._timer )
window.clearTimeout( editingArea._timer ) ;
editingArea._timer = FCKTools.SetTimeout( FCKEditingArea_MakeEditableByMutation, 1000, editingArea ) ;
}
// This function ideally should be called after the document is visible, it does clean up of the
// mutation tracking and tries again to make the area editable.
function FCKEditingArea_MakeEditableByMutation()
{
// Clean up
delete this._timer ;
// Now we don't want to keep on getting this event
FCKTools.RemoveEventListener( this.Window.frameElement, 'DOMAttrModified', FCKEditingArea_Document_AttributeNodeModified ) ;
// Let's try now to set the editing area editable
// If it fails it will set up the Mutation Listener again automatically
this.MakeEditable() ;
}
FCKEditingArea.prototype.Focus = function()
{
try
{
if ( this.Mode == FCK_EDITMODE_WYSIWYG )
{
if ( FCKBrowserInfo.IsIE )
this._FocusIE() ;
else
this.Window.focus() ;
}
else
{
var oDoc = FCKTools.GetElementDocument( this.Textarea ) ;
if ( (!oDoc.hasFocus || oDoc.hasFocus() ) && oDoc.activeElement == this.Textarea )
return ;
this.Textarea.focus() ;
}
}
catch(e) {}
}
FCKEditingArea.prototype._FocusIE = function()
{
// In IE it can happen that the document is in theory focused but the
// active element is outside of it.
this.Document.body.setActive() ;
this.Window.focus() ;
// Kludge for #141... yet more code to workaround IE bugs
var range = this.Document.selection.createRange() ;
var parentNode = range.parentElement() ;
var parentTag = parentNode.nodeName.toLowerCase() ;
// Only apply the fix when in a block, and the block is empty.
if ( parentNode.childNodes.length > 0 ||
!( FCKListsLib.BlockElements[parentTag] ||
FCKListsLib.NonEmptyBlockElements[parentTag] ) )
{
return ;
}
// Force the selection to happen, in this way we guarantee the focus will
// be there.
range = new FCKDomRange( this.Window ) ;
range.MoveToElementEditStart( parentNode ) ;
range.Select() ;
}
function FCKEditingArea_Cleanup()
{
if ( this.Document )
this.Document.body.innerHTML = "" ;
this.TargetElement = null ;
this.IFrame = null ;
this.Document = null ;
this.Textarea = null ;
if ( this.Window )
{
this.Window._FCKEditingArea = null ;
this.Window = null ;
}
}