/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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.vaadin.client;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.dom.client.Style;
/**
* Utility methods for working with CSS transitions and animations.
*
* @author Vaadin Ltd
* @since 7.3
*/
public class AnimationUtil {
/**
* For internal use only. May be removed or replaced in the future.
*
* Set the animation-duration CSS property.
*
* @param elem
* the element whose animation-duration to set
* @param duration
* the duration as a valid CSS value
*/
public static void setAnimationDuration(Element elem, String duration) {
Style style = elem.getStyle();
style.setProperty(ANIMATION_PROPERTY_NAME + "Duration", duration);
}
/**
* For internal use only. May be removed or replaced in the future.
*
* Set the animation-delay CSS property.
*
* @param elem
* the element whose animation-delay to set
* @param delay
* the delay as a valid CSS value
*/
public static void setAnimationDelay(Element elem, String delay) {
Style style = elem.getStyle();
style.setProperty(ANIMATION_PROPERTY_NAME + "Delay", delay);
}
/** For internal use only. May be removed or replaced in the future. */
public static native JavaScriptObject addAnimationEndListener(Element elem,
AnimationEndListener listener)
/*-{
var callbackFunc = $entry(function(e) {
listener.@com.vaadin.client.AnimationUtil.AnimationEndListener::onAnimationEnd(Lcom/google/gwt/dom/client/NativeEvent;)(e);
});
elem.addEventListener(@com.vaadin.client.AnimationUtil::ANIMATION_END_EVENT_NAME, callbackFunc, false);
// Store function reference for later removal
if(!elem._vaadin_animationend_callbacks) {
elem._vaadin_animationend_callbacks = [];
}
elem._vaadin_animationend_callbacks.push(callbackFunc);
return callbackFunc;
}-*/;
/** For internal use only. May be removed or replaced in the future. */
public static native void removeAnimationEndListener(Element elem,
JavaScriptObject listener)
/*-{
elem.removeEventListener(@com.vaadin.client.AnimationUtil::ANIMATION_END_EVENT_NAME, listener, false);
}-*/;
/** For internal use only. May be removed or replaced in the future. */
public static native void removeAllAnimationEndListeners(Element elem)
/*-{
if(elem._vaadin_animationend_callbacks) {
var callbacks = elem._vaadin_animationend_callbacks;
for(var i=0; i < callbacks.length; i++) {
elem.removeEventListener(@com.vaadin.client.AnimationUtil::ANIMATION_END_EVENT_NAME, callbacks[i], false);
}
}
}-*/;
/** For internal use only. May be removed or replaced in the future. */
public interface AnimationEndListener {
public void onAnimationEnd(NativeEvent event);
}
/** For internal use only. May be removed or replaced in the future. */
public static native String getAnimationName(NativeEvent event)
/*-{
if(event.webkitAnimationName)
return event.webkitAnimationName;
else if(event.animationName)
return event.animationName;
else if(event.mozAnimationName)
return event.mozAnimationName;
else if(event.oAnimationName)
return event.oAnimationName;
return "";
}-*/;
/** For internal use only. May be removed or replaced in the future. */
public static native String getAnimationName(ComputedStyle cstyle)
/*-{
var cs = cstyle.@com.vaadin.client.ComputedStyle::computedStyle;
if(!cs.getPropertyValue)
return "";
if(cs.getPropertyValue("-webkit-animation-name"))
return cs.getPropertyValue("-webkit-animation-name");
else if(cs.getPropertyValue("animation-name"))
return cs.getPropertyValue("animation-name");
else if(cs.getPropertyValue("-moz-animation-name"))
return cs.getPropertyValue("-moz-animation-name");
else if(cs.getPropertyValue("-o-animation-name"))
return cs.getPropertyValue("-o-animation-name");
return "";
}-*/;
private static final String ANIMATION_END_EVENT_NAME = whichAnimationEndEvent();
private static native String whichAnimationEndEvent()
/*-{
var el = document.createElement('fakeelement');
var anims = {
'animationName': 'animationend',
'OAnimationName': 'oAnimationEnd',
'MozAnimation': 'animationend',
'WebkitAnimation': 'webkitAnimationEnd'
}
for(var a in anims){
if( el.style[a] !== undefined ){
return anims[a];
}
}
}-*/;
private static final String ANIMATION_PROPERTY_NAME = whichAnimationProperty();
private static native String whichAnimationProperty()
/*-{
var el = document.createElement('fakeelement');
var anims = [
'animation',
'oAnimation',
'mozAnimation',
'webkitAnimation'
]
for(var i=0; i < anims.length; i++) {
if( el.style[anims[i]] !== undefined ){
return anims[i];
}
}
}-*/;
}