/*
* 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.user.client.ui;
/**
* Implemented by objects that have the visibility trait.
*/
public interface HasVisibility {
/**
* Determines whether or not this object is visible. Note that this does not
* necessarily take into account whether or not the receiver's parent is
* visible, or even if it is attached to the
* {@link com.google.gwt.dom.client.Document Document}. The default
* implementation of this trait in {@link UIObject} is based on the value of a
* dom element's style object's display attribute.
*
* @return <code>true</code> if the object is visible
*/
boolean isVisible();
/**
* Sets whether this object is visible.
*
* @param visible <code>true</code> to show the object, <code>false</code> to
* hide it
*/
void setVisible(boolean visible);
}