com.google.gwt.query.client.css.ZIndexProperty Maven / Gradle / Ivy
/*
* Copyright 2011, The gwtquery team.
*
* 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.query.client.css;
import com.google.gwt.dom.client.Style;
import com.google.gwt.query.client.css.TakesCssValue.CssSetter;
/**
* The z-index property specifies the stack order of an element.
*
* An element with greater stack order is always in front of an element with a
* lower stack order.
*
* The z-index property only works on positioned elements (position:absolute,
* position:relative, or position:fixed).
*/
public class ZIndexProperty implements TakesInteger {
private static final String CSS_PROPERTY = "zIndex";
public static void init() {
CSS.ZINDEX = new ZIndexProperty();
}
private ZIndexProperty() {
}
public String getCssName() {
return CSS_PROPERTY;
}
/**
* return a {@link String} containing the value of the z-index
* property.
*/
public String getCssValue(Style s) {
return getZIndex(s);
}
/**
* returns a {@link CssSetter} object setting z-index property to the
* specified value.
*/
public CssSetter with(Integer value) {
return new SimpleCssSetter(CSS_PROPERTY, value != null ? value.toString() : null);
}
/**
* See GWT issue 5548.
* http://code.google.com/p/google-web-toolkit/issues/detail?id=5548
*/
private native String getZIndex(Style s) /*-{
// force to return a string
return "" + s["zIndex"];
}-*/;
}