/*******************************************************************************
* Copyright 2009, 2010 Lars Grammel
*
* 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 org.thechiselgroup.choosel.core.client.ui;
import org.thechiselgroup.choosel.core.client.ui.popup.PopupManager;
import org.thechiselgroup.choosel.core.client.ui.popup.PopupManagerFactory;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.MouseOutEvent;
import com.google.gwt.event.dom.client.MouseOutHandler;
import com.google.gwt.event.dom.client.MouseOverEvent;
import com.google.gwt.event.dom.client.MouseOverHandler;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
public class ActionToolbarImage extends Image {
private Action action;
private boolean mouseOver = false;
private Label popupLabel;
public ActionToolbarImage(Action action,
PopupManagerFactory popupManagerFactory) {
assert action != null;
assert popupManagerFactory != null;
this.action = action;
initMouseHandlers();
initActionChangeHandler();
initPopup(popupManagerFactory);
update();
}
private void initActionChangeHandler() {
action.addActionChangedHandler(new ActionChangedEventHandler() {
@Override
public void onActionChanged(ActionChangedEvent event) {
update();
}
});
}
private void initMouseHandlers() {
addMouseOverHandler(new MouseOverHandler() {
@Override
public void onMouseOver(MouseOverEvent event) {
mouseOver = true;
if (action.isEnabled()) {
setUrl(action.getHighlightedIconUrl());
}
}
});
addMouseOutHandler(new MouseOutHandler() {
@Override
public void onMouseOut(MouseOutEvent event) {
mouseOver = false;
if (action.isEnabled()) {
setUrl(action.getNormalIconUrl());
}
}
});
addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
action.execute();
}
});
}
private void initPopup(PopupManagerFactory popupManagerFactory) {
popupLabel = new Label();
PopupManager popupManager = popupManagerFactory
.createPopupManager(popupLabel);
popupManager.linkToWidget(this);
}
// TODO do not show popup if disabled?
protected void update() {
if (action.isEnabled()) {
if (mouseOver) {
setUrl(action.getHighlightedIconUrl());
} else {
setUrl(action.getNormalIconUrl());
}
} else {
setUrl(action.getDisabledIconUrl());
}
// TODO name in bold, break, description if available
popupLabel.setText(action.getName());
}
}