/*
* Copyright 2011 SWM Services GmbH.
*
* 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 de.swm.commons.mobile.client.page;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.EventListener;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.HasWidgets;
import de.swm.commons.mobile.client.SWMMobile;
import de.swm.commons.mobile.client.utils.Utils;
import de.swm.commons.mobile.client.widgets.SWMMobileWidgetBase;
/**
* Defines a Transition.
*
*/
public class Transition implements EventListener {
private static final int DEFAULT_TRANSITION_DELAY = 20;
protected String transitionStyleName;
protected SWMMobileWidgetBase myFrom, myTo;
protected boolean myReverse;
protected HasWidgets myParent;
/** Defines a transition. **/
public static final Transition SLIDE = new Transition(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss()
.slide());
/** Defines a transition. **/
public static final Transition SLIDEUP = new Transition(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss()
.slideup());
/** Defines a transition. **/
public static final Transition SLIDEDOWN = new Transition(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss()
.slidedown());
/** Defines a transition. **/
public static final Transition FADE = new Transition(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss()
.fade());
/** Defines a transition. **/
public static final Transition POP = new Transition(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().pop());
/** Defines a transition. **/
public static final Transition FLIP = new FlipTransition();
/** Defines a transition. **/
public static final Transition SWAP = new SwapTransition();
/**
* Default constructor.
*
* @param transitionStyleName
* the style name.
*/
public Transition(String transitionStyleName) {
this.transitionStyleName = transitionStyleName;
}
/**
* Will perform a transition.
*
* @param from
* .
* @param to
* .
* @param parent
* the parent widget containing form sand to widgets.
*/
public static void start(final SWMMobileWidgetBase from, final SWMMobileWidgetBase to, final HasWidgets parent) {
final Timer timer = new Timer() {
@Override
public void run() {
parent.remove(from);
parent.add(to);
to.onTransitionEnd();
}
};
timer.schedule(1);
}
/**
* Will perform a transition.
*
* @param from .
* @param to .
* @param parent
* the parent widget containing form sand to widgets.
* @param reverse
* will be executer in the reverse direction.
*/
public void start(SWMMobileWidgetBase from, SWMMobileWidgetBase to, HasWidgets parent, boolean reverse) {
myFrom = from;
myTo = to;
myParent = parent;
myReverse = reverse;
prepare();
start();
}
/**
* Will prepare the next transition.
*/
protected void prepare() {
myFrom.addStyleName(transitionStyleName + " " + SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().out());
myTo.addStyleName(transitionStyleName + " " + SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().in());
if (myReverse) {
myFrom.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().reverse());
myTo.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().reverse());
}
myParent.add(myTo);
}
/**
* Will start the next transition.
*/
protected void start() {
registerTransitionEndEvent();
final Timer timer = new Timer() {
@Override
public void run() {
myFrom.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().start());
myTo.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().start());
}
};
timer.schedule(DEFAULT_TRANSITION_DELAY); // xxms instead of 1ms, to give iOS/Android enough time to set the
// starting state.
}
/**
* Will remove the transition styles.
*/
protected void removeTransitionStyles() {
myFrom.removeStyleName(transitionStyleName);
myFrom.removeStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().start());
myFrom.removeStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().out());
myFrom.removeStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().reverse());
myTo.removeStyleName(transitionStyleName);
myTo.removeStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().in());
myTo.removeStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().start());
myTo.removeStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().reverse());
}
@Override
public void onBrowserEvent(Event e) {
String type = e.getType();
if (type.equals("webkitTransitionEnd") || type.equals("webkitAnimationEnd")) {
onTransitionEnd();
}
}
/**
* Will be called after the transition is completed.
*/
protected void onTransitionEnd() {
if (myFrom != null && myTo != null) {
myParent.remove(myFrom);
removeTransitionStyles();
myTo.onTransitionEnd();
myFrom = null;
myTo = null;
myParent = null;
}
}
/**
* Event which will be fired, after the transition is completed.
*/
protected void registerTransitionEndEvent() {
if (!myReverse) {
Utils.addEventListenerOnce(myTo.getElement(), "webkitTransitionEnd", false, this);
} else {
Utils.addEventListenerOnce(myFrom.getElement(), "webkitTransitionEnd", false, this);
}
}
/**
* Flip-Transion.
*
*
*
*
*/
private static class FlipTransition extends Transition {
private int myPhase = 0;
/**
* Default constructor.
*/
public FlipTransition() {
super(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().flip0());
}
@Override
protected void registerTransitionEndEvent() {
if (myPhase == 0) {
Utils.addEventListenerOnce(myFrom.getElement(), "webkitTransitionEnd", false, this);
} else {
Utils.addEventListenerOnce(myTo.getElement(), "webkitTransitionEnd", false, this);
}
}
@Override
protected void onTransitionEnd() {
removeTransitionStyles();
if (myPhase == 0) {
myParent.remove(myFrom);
myParent.add(myTo);
myPhase++;
transitionStyleName = SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().flip1();
prepare();
start();
} else {
myTo.onTransitionEnd();
myFrom = null;
myTo = null;
myPhase = 0;
transitionStyleName = SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().flip0();
}
}
@Override
protected void prepare() {
myFrom.addStyleName(transitionStyleName + " "
+ SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().out());
myTo.addStyleName(transitionStyleName + " "
+ SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().in());
if (myReverse) {
myFrom.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().reverse());
myTo.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().reverse());
}
}
}
/**
* Swap-Transition.
*
*
*
*
*/
private static class SwapTransition extends Transition {
private int myPhase = 0;
/**
* D Default constructor.
*/
public SwapTransition() {
super(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().swap0());
}
@Override
protected void onTransitionEnd() {
removeTransitionStyles();
if (myPhase == 0) {
myPhase++;
transitionStyleName = SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().swap1();
prepare();
start();
} else {
myParent.remove(myFrom);
myTo.onTransitionEnd();
myFrom = null;
myTo = null;
myPhase = 0;
transitionStyleName = SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().swap0();
}
}
@Override
protected void prepare() {
myFrom.addStyleName(transitionStyleName + " "
+ SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().out());
myTo.addStyleName(transitionStyleName + " "
+ SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().in());
if (myReverse) {
myFrom.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().reverse());
myTo.addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getTransitionsCss().reverse());
}
if (myPhase == 0) {
myParent.add(myTo);
}
}
}
}