source: trunk/admin/inc/FCKeditor/editor/_source/commandclasses/fckfitwindow.js@ 2

/*
 * 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: fckfitwindow.js
 *      Stretch the editor to full window size and back.
 * 
 * File Authors:
 *              Paul Moers (mail@saulmade.nl)
 *              Thanks to Christian Fecteau (webmaster@christianfecteau.com)
 *              Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

var FCKFitWindow = function()
{
        this.Name = 'FitWindow' ;
}

FCKFitWindow.prototype.Execute = function()
{
        var eEditorFrame                = window.frameElement ;
        var eEditorFrameStyle   = eEditorFrame.style ;

        var eMainWindow                 = parent ;
        var eDocEl                              = eMainWindow.document.documentElement ;
        var eBody                               = eMainWindow.document.body ;
        var eBodyStyle                  = eBody.style ;

        // No original style properties known? Go fullscreen.
        if ( !this.IsMaximized )
        {
                // Registering an event handler when the window gets resized.
                if( FCKBrowserInfo.IsIE )
                        eMainWindow.attachEvent( 'onresize', FCKFitWindow_Resize ) ;
                else
                        eMainWindow.addEventListener( 'resize', FCKFitWindow_Resize, true ) ;

                // Save the scrollbars position.
                this._ScrollPos = FCKTools.GetScrollPosition( eMainWindow ) ;
                
                // Save and reset the styles for the entire node tree. They could interfere in the result.
                var eParent = eEditorFrame ;
                while( eParent = eParent.parentNode )
                {
                        if ( eParent.nodeType == 1 )
                                eParent._fckSavedStyles = FCKTools.SaveStyles( eParent ) ;
                }               

                // Hide IE scrollbars (in strict mode).
                if ( FCKBrowserInfo.IsIE )
                {
                        this.documentElementOverflow = eDocEl.style.overflow ;
                        eDocEl.style.overflow   = 'hidden' ;
                        eBodyStyle.overflow             = 'hidden' ;
                }
                else
                {
                        // Hide the scroolbars in Firefox.
                        eBodyStyle.overflow = 'hidden' ;
                        eBodyStyle.width = '0px' ;
                        eBodyStyle.height = '0px' ;
                }
                
                // Save the IFRAME styles.
                this._EditorFrameStyles = FCKTools.SaveStyles( eEditorFrame ) ;
                
                // Resize.
                var oViewPaneSize = FCKTools.GetViewPaneSize( eMainWindow ) ;

                eEditorFrameStyle.position      = "absolute";
                eEditorFrameStyle.zIndex        = FCKConfig.FloatingPanelsZIndex - 1;
                eEditorFrameStyle.left          = "0px";
                eEditorFrameStyle.top           = "0px";
                eEditorFrameStyle.width         = oViewPaneSize.Width + "px";
                eEditorFrameStyle.height        = oViewPaneSize.Height + "px";
                
                // Giving the frame some (huge) borders on his right and bottom
                // side to hide the background that would otherwise show when the
                // editor is in fullsize mode and the window is increased in size
                // not for IE, because IE immediately adapts the editor on resize, 
                // without showing any of the background oddly in firefox, the
                // editor seems not to fill the whole frame, so just setting the
                // background of it to white to cover the page laying behind it anyway.
                if ( !FCKBrowserInfo.IsIE )
                {
                        eEditorFrameStyle.borderRight = eEditorFrameStyle.borderBottom = "9999px solid white" ;
                        eEditorFrameStyle.backgroundColor               = "white";
                }

                // Scroll to top left.
                eMainWindow.scrollTo(0, 0);

                this.IsMaximized = true ;
        }
        else    // Resize to original size.
        {
                // Remove the event handler of window resizing.
                if( FCKBrowserInfo.IsIE )
                        eMainWindow.detachEvent( "onresize", FCKFitWindow_Resize ) ;
                else
                        eMainWindow.removeEventListener( "resize", FCKFitWindow_Resize, true ) ;

                // Restore the CSS position for the entire node tree.
                var eParent = eEditorFrame ;
                while( eParent = eParent.parentNode )
                {
                        if ( eParent._fckSavedStyles )
                        {
                                FCKTools.RestoreStyles( eParent, eParent._fckSavedStyles ) ;
                                eParent._fckSavedStyles = null ;
                        }
                }
                
                // Restore IE scrollbars
                if ( FCKBrowserInfo.IsIE )
                        eDocEl.style.overflow = this.documentElementOverflow ;

                // Restore original size
                FCKTools.RestoreStyles( eEditorFrame, this._EditorFrameStyles ) ;
                
                // Restore the window scroll position.
                eMainWindow.scrollTo( this._ScrollPos.X, this._ScrollPos.Y ) ;

                this.IsMaximized = false ;
        }
        
        FCKToolbarItems.GetItem('FitWindow').RefreshState() ;

        // It seams that Firefox restarts the editing area when making this changes.
        // On FF 1.0.x, the area is not anymore editable. On FF 1.5+, the special 
        //configuration, like DisableFFTableHandles and DisableObjectResizing get 
        //lost, so we must reset it. Also, the cursor position and selection are 
        //also lost, even if you comment the following line (MakeEditable).
        // if ( FCKBrowserInfo.IsGecko10 )      // Initially I thought it was a FF 1.0 only problem.
        FCK.EditingArea.MakeEditable() ;
        
        FCK.Focus() ;
}

FCKFitWindow.prototype.GetState = function()
{
        if ( FCKConfig.ToolbarLocation != 'In' )
                return FCK_TRISTATE_DISABLED ;
        else
                return ( this.IsMaximized ? FCK_TRISTATE_ON : FCK_TRISTATE_OFF );
}

function FCKFitWindow_Resize()
{
        var oViewPaneSize = FCKTools.GetViewPaneSize( parent ) ;

        var eEditorFrameStyle = window.frameElement.style ;

        eEditorFrameStyle.width         = oViewPaneSize.Width + 'px' ;
        eEditorFrameStyle.height        = oViewPaneSize.Height + 'px' ;
}