/*
* Copyright 2011 JBoss 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 org.jbpm.formbuilder.client.tree;
import java.util.ArrayList;
import java.util.List;
import org.jbpm.formapi.client.CommonGlobals;
import org.jbpm.formapi.client.bus.FormItemSelectionEvent;
import org.jbpm.formapi.client.form.FBCompositeItem;
import org.jbpm.formapi.client.form.FBFormItem;
import org.jbpm.formapi.client.menu.EffectsPopupPanel;
import org.jbpm.formapi.common.handler.RightClickEvent;
import org.jbpm.formapi.common.handler.RightClickHandler;
import org.jbpm.formbuilder.client.FormBuilderGlobals;
import org.jbpm.formbuilder.client.resources.FormBuilderResources;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.FocusPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
/**
* Representation of a {@link FBFormItem} on the tree view.
* Has either a folder or a leaf and a name
*/
public class TreeElement extends FocusPanel {
private final FBFormItem item;
private final Image img;
private final Label itemName;
private List<RightClickHandler> rclickHandlers = new ArrayList<RightClickHandler>();
private final EventBus bus = CommonGlobals.getInstance().getEventBus();
private final HorizontalPanel panel = new HorizontalPanel();
public TreeElement() {
panel.setSpacing(0);
panel.setBorderWidth(0);
this.item = null;
this.img = new Image(FormBuilderResources.INSTANCE.treeFolder());
this.itemName = new HTML("<strong>form</strong>");
panel.add(this.img);
panel.add(this.itemName);
add(panel);
}
public TreeElement(FBFormItem formItem) {
panel.setSpacing(0);
panel.setBorderWidth(0);
this.item = formItem;
if (formItem != null) {
this.itemName = new Label(formItem.getRepresentation().getTypeId());
if (formItem instanceof FBCompositeItem) {
this.img = new Image(FormBuilderResources.INSTANCE.treeFolder());
} else {
this.img = new Image(FormBuilderResources.INSTANCE.treeLeaf());
}
} else {
throw new IllegalArgumentException(
FormBuilderGlobals.getInstance().getI18n().FormItemShouldntBeNull());
}
panel.add(this.img);
panel.add(this.itemName);
sinkEvents(Event.ONMOUSEUP | Event.ONDBLCLICK | Event.ONCONTEXTMENU);
addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
if (item != null) {
bus.fireEvent(new FormItemSelectionEvent(item, true));
}
}
});
add(panel);
addRightClickHandler(new RightClickHandler() {
@Override
public void onRightClick(RightClickEvent event) {
if (item != null) {
EffectsPopupPanel popupPanel = new EffectsPopupPanel(item, true);
if (item.getFormEffects() != null && !item.getFormEffects().isEmpty()) {
popupPanel.setPopupPosition(event.getX(), event.getY());
popupPanel.show();
}
}
}
});
}
public HandlerRegistration addRightClickHandler(final RightClickHandler handler) {
HandlerRegistration reg = new HandlerRegistration() {
@Override
public void removeHandler() {
TreeElement.this.rclickHandlers.remove(handler);
}
};
this.rclickHandlers.add(handler);
return reg;
}
@Override
public void onBrowserEvent(Event event) {
event.stopPropagation();
event.preventDefault();
switch (DOM.eventGetType(event)) {
case Event.ONMOUSEUP:
if (DOM.eventGetButton(event) == Event.BUTTON_LEFT) {
ClickEvent cevent = new ClickEvent() {
@Override
public Object getSource() {
return item;
}
};
cevent.setNativeEvent(event);
fireEvent(cevent);
super.onBrowserEvent(event);
} else if (DOM.eventGetButton(event) == Event.BUTTON_RIGHT) {
for (RightClickHandler handler : rclickHandlers) {
handler.onRightClick(new RightClickEvent(event));
}
}
break;
case Event.ONDBLCLICK:
break;
case Event.ONCONTEXTMENU:
break;
default:
break; // Do nothing
}//end switch
}
public boolean represents(FBFormItem item) {
return this.item != null && this.item == item;
}
public boolean represents(FBCompositeItem item) {
return this.item != null && this.item == item;
}
}