mailiverse/gwt/war/ckeditor/_source/plugins/autogrow/plugin.js
2013-07-21 13:40:17 -04:00

142 lines
4.5 KiB
JavaScript

/*
Copyright (c) 2003-2012, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/
/**
* @file AutoGrow plugin
*/
(function(){
// Actual content height, figured out by appending check the last element's document position.
function contentHeight( scrollable )
{
var overflowY = scrollable.getStyle( 'overflow-y' );
var doc = scrollable.getDocument();
// Create a temporary marker element.
var marker = CKEDITOR.dom.element.createFromHtml( '<span style="margin:0;padding:0;border:0;clear:both;width:1px;height:1px;display:block;">' + ( CKEDITOR.env.webkit ? '&nbsp;' : '' ) + '</span>', doc );
doc[ CKEDITOR.env.ie? 'getBody' : 'getDocumentElement']().append( marker );
var height = marker.getDocumentPosition( doc ).y + marker.$.offsetHeight;
marker.remove();
scrollable.setStyle( 'overflow-y', overflowY );
return height;
}
var resizeEditor = function( editor )
{
if ( !editor.window )
return;
var doc = editor.document,
iframe = new CKEDITOR.dom.element( doc.getWindow().$.frameElement ),
body = doc.getBody(),
htmlElement = doc.getDocumentElement(),
currentHeight = editor.window.getViewPaneSize().height,
// Quirks mode overflows body, standards overflows document element
scrollable = doc.$.compatMode == 'BackCompat' ? body : htmlElement,
newHeight = contentHeight( scrollable );
// Additional space specified by user.
newHeight += ( editor.config.autoGrow_bottomSpace || 0 );
var min = editor.config.autoGrow_minHeight != undefined ? editor.config.autoGrow_minHeight : 200,
max = editor.config.autoGrow_maxHeight || Infinity;
newHeight = Math.max( newHeight, min );
newHeight = Math.min( newHeight, max );
if ( newHeight != currentHeight )
{
newHeight = editor.fire( 'autoGrow', { currentHeight : currentHeight, newHeight : newHeight } ).newHeight;
editor.resize( editor.container.getStyle( 'width' ), newHeight, true );
}
if ( scrollable.$.scrollHeight > scrollable.$.clientHeight && newHeight < max )
scrollable.setStyle( 'overflow-y', 'hidden' );
else
scrollable.removeStyle( 'overflow-y' );
};
CKEDITOR.plugins.add( 'autogrow',
{
init : function( editor )
{
editor.addCommand( 'autogrow', { exec : resizeEditor, modes : { wysiwyg:1 }, readOnly: 1, canUndo: false, editorFocus: false } );
var eventsList = { contentDom:1, key:1, selectionChange:1, insertElement:1, mode:1 };
editor.config.autoGrow_onStartup && ( eventsList[ 'instanceReady' ] = 1 );
for ( var eventName in eventsList )
{
editor.on( eventName, function( evt )
{
var maximize = editor.getCommand( 'maximize' );
// Some time is required for insertHtml, and it gives other events better performance as well.
if ( evt.editor.mode == 'wysiwyg' &&
// Disable autogrow when the editor is maximized .(#6339)
( !maximize || maximize.state != CKEDITOR.TRISTATE_ON ) )
{
setTimeout( function()
{
resizeEditor( evt.editor );
// Second pass to make correction upon
// the first resize, e.g. scrollbar.
resizeEditor( evt.editor );
}, 100 );
}
});
}
}
});
})();
/**
* The minimum height that the editor can reach using the AutoGrow feature.
* @name CKEDITOR.config.autoGrow_minHeight
* @type Number
* @default <code>200</code>
* @since 3.4
* @example
* config.autoGrow_minHeight = 300;
*/
/**
* The maximum height that the editor can reach using the AutoGrow feature. Zero means unlimited.
* @name CKEDITOR.config.autoGrow_maxHeight
* @type Number
* @default <code>0</code>
* @since 3.4
* @example
* config.autoGrow_maxHeight = 400;
*/
/**
* Whether to have the auto grow happen on editor creation.
* @name CKEDITOR.config.autoGrow_onStartup
* @type Boolean
* @default false
* @since 3.6.2
* @example
* config.autoGrow_onStartup = true;
*/
/**
* Fired when the AutoGrow plugin is about to change the size of the editor.
* @name CKEDITOR.editor#autogrow
* @event
* @param {Number} data.currentHeight The current height of the editor (before resizing).
* @param {Number} data.newHeight The new height of the editor (after resizing). It can be changed
* to determine a different height value to be used instead.
*/
/**
* Extra height in pixel to leave between the bottom boundary of content with document size when auto resizing.
* @name CKEDITOR.config.autoGrow_bottomSpace
* @type Number
* @default 0
* @since 3.6.2
*/