/*
* 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.command;
import java.util.HashMap;
import java.util.Map;
import org.jbpm.formapi.client.CommonGlobals;
import org.jbpm.formapi.client.form.FBFormItem;
import org.jbpm.formbuilder.client.bus.UndoableEvent;
import org.jbpm.formbuilder.client.bus.UndoableHandler;
import org.jbpm.formbuilder.client.bus.ui.FormItemAddedEvent;
import org.jbpm.formbuilder.client.bus.ui.FormItemRemovedEvent;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.user.client.ui.HasOneWidget;
import com.google.gwt.user.client.ui.HasWidgets;
import com.google.gwt.user.client.ui.MenuItem;
import com.google.gwt.user.client.ui.Widget;
import com.gwtent.reflection.client.Reflectable;
/**
* Handles the action of cutting a UI component
*/
@Reflectable
public class CutCommand extends AbstractCopyPasteCommand {
private final EventBus bus = CommonGlobals.getInstance().getEventBus();
public CutCommand() {
super();
CommonGlobals.getInstance().registerCut(this);
}
@Override
protected void enable(MenuItem menuItem) {
menuItem.setEnabled(getSelectedItem() != null);
}
@Override
public void execute() {
Map<String, Object> dataSnapshot = new HashMap<String, Object>();
dataSnapshot.put("selectedItem", getSelectedItem());
dataSnapshot.put("oldItemParent", getSelectedItem() == null ? null : getSelectedItem().getParent());
dataSnapshot.put("oldMemory", AbstractCopyPasteCommand.getMemory());
fireUndoableEvent(dataSnapshot, new UndoableHandler() {
@Override
public void doAction(UndoableEvent event) {
FBFormItem item = (FBFormItem) event.getData("selectedItem");
if (item == null) {
AbstractCopyPasteCommand.setMemory(null);
} else {
AbstractCopyPasteCommand.setMemory(item.cloneItem());
item.removeFromParent();
}
CommonGlobals.getInstance().paste().enable();
bus.fireEvent(new FormItemRemovedEvent(item));
}
@Override
public void undoAction(UndoableEvent event) {
FBFormItem item = (FBFormItem) event.getData("selectedItem");
Object oldMemory = event.getData("oldMemory");
Widget oldParent = (Widget) event.getData("oldItemParent");
AbstractCopyPasteCommand.setMemory(oldMemory);
CommonGlobals.getInstance().paste().enable();
if (oldParent instanceof HasWidgets) {
HasWidgets oldParentPanel = (HasWidgets) oldParent;
oldParentPanel.add(item);
} else if (oldParent instanceof HasOneWidget) {
HasOneWidget oldParentPanel = (HasOneWidget) oldParent;
oldParentPanel.setWidget(item);
}
bus.fireEvent(new FormItemAddedEvent(item, oldParent));
}
@Override
public void onEvent(UndoableEvent event) { }
});
}
}