/*
* 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.FormBuilderException;
import org.jbpm.formapi.client.bus.ui.NotificationEvent;
import org.jbpm.formapi.client.bus.ui.NotificationEvent.Level;
import org.jbpm.formapi.shared.api.FormRepresentation;
import org.jbpm.formbuilder.client.FormBuilderGlobals;
import org.jbpm.formbuilder.client.FormBuilderService;
import org.jbpm.formbuilder.client.bus.GetFormRepresentationEvent;
import org.jbpm.formbuilder.client.bus.GetFormRepresentationResponseEvent;
import org.jbpm.formbuilder.client.bus.GetFormRepresentationResponseHandler;
import org.jbpm.formbuilder.client.bus.UndoableEvent;
import org.jbpm.formbuilder.client.bus.UndoableHandler;
import org.jbpm.formbuilder.client.messages.I18NConstants;
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.user.client.ui.Button;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.MenuItem;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.gwtent.reflection.client.Reflectable;
/**
* Handles the action of deleting a form on the server.
*/
@Reflectable
public class DeleteFormCommand implements BaseCommand {
private static final String DELETE_TYPE = DeleteFormCommand.class.getName();
private final I18NConstants i18n = FormBuilderGlobals.getInstance().getI18n();
private final EventBus bus = CommonGlobals.getInstance().getEventBus();
private final FormBuilderService service = FormBuilderGlobals.getInstance().getService();
public DeleteFormCommand() {
super();
bus.addHandler(GetFormRepresentationResponseEvent.TYPE, new GetFormRepresentationResponseHandler() {
@Override
public void onEvent(GetFormRepresentationResponseEvent event) {
if (DELETE_TYPE.equals(event.getSaveType())) {
FormRepresentation form = event.getRepresentation();
showDeletePanel(form);
}
}
});
}
@Override
public void execute() {
bus.fireEvent(new GetFormRepresentationEvent(DELETE_TYPE));
}
private MenuItem item = null;
@Override
public void setItem(MenuItem item) {
this.item = item;
item.setEnabled(true);
}
@Override
public void setEmbeded(String profile) {
if (profile != null && "guvnor".equals(profile)) {
//if embedded from guvnor, deletion shouldn't be available
if (item != null) {
item.getParentMenu().removeItem(item);
}
}
}
private void showDeletePanel(final FormRepresentation form) {
final PopupPanel panel = new PopupPanel();
if (form.isSaved()) {
VerticalPanel vpanel = new VerticalPanel();
vpanel.add(new Label(i18n.WarningDeleteForm(form.getName())));
HorizontalPanel hpanel = new HorizontalPanel();
Button confirmButton = new Button(i18n.ConfirmButton());
confirmButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
deleteForm(form);
panel.hide();
}
});
hpanel.add(confirmButton);
Button cancelButton = new Button(i18n.CancelButton());
cancelButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
panel.hide();
}
});
hpanel.add(cancelButton);
vpanel.add(hpanel);
panel.setWidget(vpanel);
} else {
VerticalPanel vpanel = new VerticalPanel();
vpanel.add(new Label(i18n.FormWasNeverSaved()));
Button closeButton = new Button(i18n.CloseButton());
closeButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
panel.hide();
}
});
vpanel.add(closeButton);
panel.setWidget(vpanel);
}
int height = RootPanel.getBodyElement().getClientHeight();
int width = RootPanel.getBodyElement().getClientWidth();
panel.setPopupPosition((width / 2) - 150, (height - 100) / 2);
panel.show();
}
private void deleteForm(FormRepresentation form) {
Map<String, Object> dataSnapshot = new HashMap<String, Object>();
dataSnapshot.put("form", form);
bus.fireEvent(new UndoableEvent(dataSnapshot, new UndoableHandler() {
@Override
public void undoAction(UndoableEvent event) {
FormRepresentation form = (FormRepresentation) event.getData("form");
if (form != null) {
try {
service.saveForm(form);
} catch (FormBuilderException e) {
bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ProblemRestoringForm(), e));
}
}
}
@Override
public void onEvent(UndoableEvent event) { }
@Override
public void doAction(UndoableEvent event) {
FormRepresentation form = (FormRepresentation) event.getData("form");
try {
service.deleteForm(form);
} catch (FormBuilderException e) {
event.setData("form", null);
bus.fireEvent(new NotificationEvent(Level.ERROR, i18n.ProblemDeletingForm(), e));
}
}
}));
}
}