com.google.gwt.dom.client.DOMImplWebkit Maven / Gradle / Ivy
/*
* Copyright 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dom.client;
/**
* WebKit based implementation of {@link com.google.gwt.dom.client.DOMImplStandardBase}.
*/
class DOMImplWebkit extends DOMImplStandardBase {
/**
* Return true if using Webkit 525.x (Safari 3) or earlier.
*
* @return true if using Webkit 525.x (Safari 3) or earlier.
*/
private static native boolean isWebkit525OrBefore() /*-{
var result = /safari\/([\d.]+)/.exec(navigator.userAgent.toLowerCase());
if (result) {
var version = (parseFloat(result[1]));
if (version < 526) {
return true;
}
}
return false;
}-*/;
/**
* Webkit events sometimes target the text node inside of the element instead
* of the element itself, so we need to get the parent of the text node.
*/
@Override
public native EventTarget eventGetTarget(NativeEvent evt) /*-{
var target = evt.target;
if (target && target.nodeType == 3) {
target = target.parentNode;
}
return target;
}-*/;
/**
* Webkit based browsers require that we set the webkit-user-drag style
* attribute to make an element draggable.
*/
@Override
public void setDraggable(Element elem, String draggable) {
super.setDraggable(elem, draggable);
if ("true".equals(draggable)) {
elem.getStyle().setProperty("webkitUserDrag", "element");
} else {
elem.getStyle().clearProperty("webkitUserDrag");
}
}
@Override
Element getLegacyDocumentScrollingElement(Document doc) {
// Old WebKit needs body.scrollLeft in both quirks mode and strict mode.
return doc.getBody();
}
}