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cappuccino/AppKit/Platform/CPPlatform+DOM.j
T
2010-01-07 19:30:17 -08:00

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/*
* CPPlatform+DOM.j
* AppKit
*
* Created by Francisco Tolmasky.
* Copyright 2010, 280 North, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
var DOMSafeElement = NULL,
screenNeedsInitialization = [CPPlatform isBrowser];
@implementation CPPlatform (DOM)
+ (DOMElement)DOMSafeElement
{
if (!DOMSafeElement)
{
DOMSafeElement = document.createElement("div");
DOMSafeElement.style.position = "absolute";
DOMSafeElement.style.left = "-100000px";
DOMSafeElement.style.top = "-100000px";
DOMSafeElement.style.overflow = "visible";
document.body.appendChild(DOMSafeElement);
}
return DOMSafeElement;
}
+ (void)initializeScreenIfNecessary
{
if (!screenNeedsInitialization)
return;
screenNeedsInitialization = NO;
var body = document.body;
body.removeChild(DOMSafeElement);
body.innerHTML = ""; // Get rid of anything that might be lingering in the body element.
body.style.overflow = "hidden";
body.appendChild(DOMSafeElement);
if (document.documentElement)
document.documentElement.style.overflow = "hidden";
}
@end