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/**
* $Id: mxDivResizer.js,v 1.22 2010-01-02 09:45:14 gaudenz Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
/**
* Class: mxDivResizer
*
* Maintains the size of a div element in Internet Explorer. This is a
* workaround for the right and bottom style being ignored in IE.
*
* If you need a div to cover the scrollwidth and -height of a document,
* then you can use this class as follows:
*
* (code)
* var resizer = new mxDivResizer(background);
* resizer.getDocumentHeight = function()
* {
* return document.body.scrollHeight;
* }
* resizer.getDocumentWidth = function()
* {
* return document.body.scrollWidth;
* }
* resizer.resize();
* (end)
*
* Constructor: mxDivResizer
*
* Constructs an object that maintains the size of a div
* element when the window is being resized. This is only
* required for Internet Explorer as it ignores the respective
* stylesheet information for DIV elements.
*
* Parameters:
*
* div - Reference to the DOM node whose size should be maintained.
* container - Optional Container that contains the div. Default is the
* window.
*/
function mxDivResizer(div, container)
{
if (div.nodeName.toLowerCase() == 'div')
{
if (container == null)
{
container = window;
}
this.div = div;
var style = mxUtils.getCurrentStyle(div);
if (style != null)
{
this.resizeWidth = style.width == 'auto';
this.resizeHeight = style.height == 'auto';
}
mxEvent.addListener(container, 'resize',
mxUtils.bind(this, function(evt)
{
if (!this.handlingResize)
{
this.handlingResize = true;
this.resize();
this.handlingResize = false;
}
})
);
this.resize();
}
};
/**
* Function: resizeWidth
*
* Boolean specifying if the width should be updated.
*/
mxDivResizer.prototype.resizeWidth = true;
/**
* Function: resizeHeight
*
* Boolean specifying if the height should be updated.
*/
mxDivResizer.prototype.resizeHeight = true;
/**
* Function: handlingResize
*
* Boolean specifying if the width should be updated.
*/
mxDivResizer.prototype.handlingResize = false;
/**
* Function: resize
*
* Updates the style of the DIV after the window has been resized.
*/
mxDivResizer.prototype.resize = function()
{
var w = this.getDocumentWidth();
var h = this.getDocumentHeight();
var l = parseInt(this.div.style.left);
var r = parseInt(this.div.style.right);
var t = parseInt(this.div.style.top);
var b = parseInt(this.div.style.bottom);
if (this.resizeWidth &&
!isNaN(l) &&
!isNaN(r) &&
l >= 0 &&
r >= 0 &&
w - r - l > 0)
{
this.div.style.width = (w - r - l)+'px';
}
if (this.resizeHeight &&
!isNaN(t) &&
!isNaN(b) &&
t >= 0 &&
b >= 0 &&
h - t - b > 0)
{
this.div.style.height = (h - t - b)+'px';
}
};
/**
* Function: getDocumentWidth
*
* Hook for subclassers to return the width of the document (without
* scrollbars).
*/
mxDivResizer.prototype.getDocumentWidth = function()
{
return document.body.clientWidth;
};
/**
* Function: getDocumentHeight
*
* Hook for subclassers to return the height of the document (without
* scrollbars).
*/
mxDivResizer.prototype.getDocumentHeight = function()
{
return document.body.clientHeight;
};
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