/*
 * FCKeditor - The text editor for internet
 * Copyright (C) 2003-2006 Frederico Caldeira Knabben
 * 
 * Licensed under the terms of the GNU Lesser General Public License:
 *      http://www.opensource.org/licenses/lgpl-license.php
 * 
 * For further information visit:
 *      http://www.fckeditor.net/
 * 
 * "Support Open Source software. What about a donation today?"
 * 
 * File Name: fckeditor.js
 *  This is the integration file for JavaScript.
 * 
 *  It defines the FCKeditor class that can be used to create editor
 *  instances in a HTML page in the client side. For server side
 *  operations, use the specific integration system.
 * 
 * File Authors:
 *      Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

// FCKeditor Class
function cargoEditor(nombretextarea){
    var oFCKeditor=new FCKeditor(nombretextarea);
    oFCKeditor.BasePath="../FCKeditor/";
    oFCKeditor.ReplaceTextarea();
}

var FCKeditor = function( instanceName, width, height, toolbarSet, value )
{
    // Properties
    this.InstanceName   = instanceName ;
    this.Width          = width         || '100%' ;
    this.Height         = height        || '300' ;
    this.ToolbarSet     = toolbarSet    || 'Default' ;
    this.Value          = value         || '' ;
    this.BasePath       = '/fckeditor/' ;
    this.CheckBrowser   = true ;
    this.DisplayErrors  = true ;
    this.EnableSafari   = false ;       // This is a temporary property, while Safari support is under development.
    this.EnableOpera    = false ;       // This is a temporary property, while Opera support is under development.

    this.Config         = new Object() ;

    // Events
    this.OnError        = null ;    // function( source, errorNumber, errorDescription )
}

FCKeditor.prototype.Create = function()
{
    // Check for errors
    if ( !this.InstanceName || this.InstanceName.length == 0 )
    {
        this._ThrowError( 701, 'You must specify an instance name.' ) ;
        return ;
    }

    document.write( '<div>' ) ;

    if ( !this.CheckBrowser || this._IsCompatibleBrowser() )
    {
        document.write( '<input type="hidden" id="' + this.InstanceName + '" name="' + this.InstanceName + '" value="' + this._HTMLEncode( this.Value ) + '" style="display:none" />' ) ;
        document.write( this._GetConfigHtml() ) ;
        document.write( this._GetIFrameHtml() ) ;
    }
    else
    {
        var sWidth  = this.Width.toString().indexOf('%')  > 0 ? this.Width  : this.Width  + 'px' ;
        var sHeight = this.Height.toString().indexOf('%') > 0 ? this.Height : this.Height + 'px' ;
        document.write('<textarea name="' + this.InstanceName + '" rows="4" cols="40" style="WIDTH: ' + sWidth + '; HEIGHT: ' + sHeight + '">' + this._HTMLEncode( this.Value ) + '<\/textarea>') ;
    }

    document.write( '</div>' ) ;
}

FCKeditor.prototype.ReplaceTextarea = function()
{
    if ( !this.CheckBrowser || this._IsCompatibleBrowser() )
    {
        // We must check the elements firstly using the Id and then the name.
        var oTextarea = document.getElementById( this.InstanceName ) ;
        var colElementsByName = document.getElementsByName( this.InstanceName ) ;
        var i = 0;
        while ( oTextarea || i == 0 )
        {
            if ( oTextarea && oTextarea.tagName == 'TEXTAREA' )
                break ;
            oTextarea = colElementsByName[i++] ;
        }
        
        if ( !oTextarea )
        {
            alert( 'Error: The TEXTAREA with id or name set to "' + this.InstanceName + '" was not found' ) ;
            return ;
        }

        oTextarea.style.display = 'none' ;
        this._InsertHtmlBefore( this._GetConfigHtml(), oTextarea ) ;
        this._InsertHtmlBefore( this._GetIFrameHtml(), oTextarea ) ;
    }
}

FCKeditor.prototype._InsertHtmlBefore = function( html, element )
{
    if ( element.insertAdjacentHTML )   // IE
        element.insertAdjacentHTML( 'beforeBegin', html ) ;
    else                                // Gecko
    {
        var oRange = document.createRange() ;
        oRange.setStartBefore( element ) ;
        var oFragment = oRange.createContextualFragment( html );
        element.parentNode.insertBefore( oFragment, element ) ;
    }
}

FCKeditor.prototype._GetConfigHtml = function()
{
    var sConfig = '' ;
    for ( var o in this.Config )
    {
        if ( sConfig.length > 0 ) sConfig += '&amp;' ;
        sConfig += escape(o) + '=' + escape( this.Config[o] ) ;
    }

    return '<input type="hidden" id="' + this.InstanceName + '___Config" value="' + sConfig + '" style="display:none" />' ;
}

FCKeditor.prototype._GetIFrameHtml = function()
{
    var sFile = (/fcksource=true/i).test( window.top.location.search ) ? 'fckeditor.original.html' : 'fckeditor.html' ;

    var sLink = this.BasePath + 'editor/' + sFile + '?InstanceName=' + this.InstanceName ;
    if (this.ToolbarSet) sLink += '&Toolbar=' + this.ToolbarSet ;

    return '<iframe id="' + this.InstanceName + '___Frame" src="' + sLink + '" width="' + this.Width + '" height="' + this.Height + '" frameborder="0" scrolling="no"></iframe>' ;
}

FCKeditor.prototype._IsCompatibleBrowser = function()
{
    var sAgent = navigator.userAgent.toLowerCase() ;
    
    // Internet Explorer
    if ( sAgent.indexOf("msie") != -1 && sAgent.indexOf("mac") == -1 && sAgent.indexOf("opera") == -1 )
    {
        var sBrowserVersion = navigator.appVersion.match(/MSIE (.\..)/)[1] ;
        return ( sBrowserVersion >= 5.5 ) ;
    }
    
    // Gecko
    if ( navigator.product == "Gecko" && navigator.productSub >= 20030210 )
        return true ;
    
    // Opera
    if ( this.EnableOpera )
    {
        var aMatch = sAgent.match( /^opera\/(\d+\.\d+)/ ) ;
        if ( aMatch && aMatch[1] >= 9.0 )
            return true ;
    }
    
    // Safari
    if ( this.EnableSafari && sAgent.indexOf( 'safari' ) != -1 )
        return ( sAgent.match( /safari\/(\d+)/ )[1] >= 312 ) ;  // Build must be at least 312 (1.3)
    
    return false ;
}

FCKeditor.prototype._ThrowError = function( errorNumber, errorDescription )
{
    this.ErrorNumber        = errorNumber ;
    this.ErrorDescription   = errorDescription ;

    if ( this.DisplayErrors )
    {
        document.write( '<div style="COLOR: #ff0000">' ) ;
        document.write( '[ FCKeditor Error ' + this.ErrorNumber + ': ' + this.ErrorDescription + ' ]' ) ;
        document.write( '</div>' ) ;
    }

    if ( typeof( this.OnError ) == 'function' )
        this.OnError( this, errorNumber, errorDescription ) ;
}

FCKeditor.prototype._HTMLEncode = function( text )
{
    if ( typeof( text ) != "string" )
        text = text.toString() ;

    text = text.replace(/&/g, "&amp;") ;
    text = text.replace(/"/g, "&quot;") ;
    text = text.replace(/</g, "&lt;") ;
    text = text.replace(/>/g, "&gt;") ;
    text = text.replace(/'/g, "&#39;") ;

    return text ;
}