/*
* Copyright (C) 2015 Language In Interaction
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package nl.ru.languageininteraction.language.client.listener;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.HandlesAllTouchEvents;
import com.google.gwt.event.dom.client.TouchCancelEvent;
import com.google.gwt.event.dom.client.TouchEndEvent;
import com.google.gwt.event.dom.client.TouchMoveEvent;
import com.google.gwt.event.dom.client.TouchStartEvent;
import com.google.gwt.user.client.Command;
/**
* @since Feb 11, 2015 4:34:40 PM (creation date)
* @author Peter Withers <p.withers@psych.ru.nl>
*/
public abstract class SingleShotEventListner extends HandlesAllTouchEvents implements ClickHandler {
private boolean singleShotConsumed = false;
// private final Button button;
// public SingleShotEventListner(Button button) {
// this.button = button;
// }
final public void eventFired() {
// button.setText("eventFired");
// hasTargetTouch = false;
// touchTarget = null;
if (!singleShotConsumed) {
Scheduler.get().scheduleDeferred(new Command() {
@Override
public void execute() {
// button.setText("scheduleDeferred");
singleShotFired();
}
});
}
singleShotConsumed = true;
}
public void resetSingleShot() {
// button.setText("resetSingleShot");
singleShotConsumed = false;
}
@Override
final public void onClick(ClickEvent event) {
// button.setText("onClick");
event.preventDefault();
eventFired();
// if (!singleShotConsumed) {
// singleShotConsumed = true;
// singleShotFired();
// }
}
// private boolean hasTargetTouch = false;
// private EventTarget touchTarget = null;
@Override
public void onTouchStart(TouchStartEvent event) {
// final JsArray<Touch> targetTouches = event.getTargetTouches();
// button.setText("onTouchStart:" + targetTouches.length());
// event.preventDefault();
// if (targetTouches.length() > 0) {
// touchTarget = targetTouches.shift().getTarget();
// hasTargetTouch = true;
// }
}
@Override
public void onTouchMove(TouchMoveEvent event) {
// final JsArray<Touch> targetTouches = event.getTargetTouches();
// button.setText("onTouchMove:" + event.getTouches().length() + ":" + event.getTargetTouches().length());
//// event.preventDefault();
// if (targetTouches.length() > 0) {
// final EventTarget target = targetTouches.shift().getTarget();
// hasTargetTouch = target.equals(touchTarget);
// button.setText(targetTouches.length() + ":" + hasTargetTouch);
// } else {
// touchTarget = null;
// hasTargetTouch = true;
// }
}
@Override
public void onTouchCancel(TouchCancelEvent event) {
// button.setText("onTouchCanceled");
// event.preventDefault();
// if (event.getTargetTouches().length() == 0) {
// hasTargetTouch = false;
// touchTarget = null;
// }
}
@Override
public void onTouchEnd(TouchEndEvent event) {
// button.setText("onTouchEnd:" + event.getTouches().length() + ":" + event.getTargetTouches().length());
event.preventDefault();
// if (hasTargetTouch && event.getTargetTouches().length() == 0) {
eventFired();
// }
}
protected abstract void singleShotFired();
}