/*
* 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.effect;
import java.util.HashMap;
import java.util.Map;
import org.jbpm.formapi.client.CommonGlobals;
import org.jbpm.formapi.client.effect.FBFormEffect;
import org.jbpm.formapi.client.form.FBFormItem;
import org.jbpm.formapi.client.form.OptionsFormItem;
import org.jbpm.formbuilder.client.FormBuilderGlobals;
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.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
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.PopupPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.gwtent.reflection.client.Reflectable;
/**
* Allows to remove an item from a related {@link OptionsFormItem} (for example, a combobox)
*/
@Reflectable
public class DeleteItemFormEffect extends FBFormEffect {
private String dropItemLabel;
private final I18NConstants i18n = FormBuilderGlobals.getInstance().getI18n();
private final EventBus bus = CommonGlobals.getInstance().getEventBus();
public DeleteItemFormEffect() {
super(FormBuilderGlobals.getInstance().getI18n().DeleteItemFormEffectLabel(), true);
}
public void setDropItemLabel(String dropItemLabel) {
this.dropItemLabel = dropItemLabel;
}
public String getDropItemLabel() {
return this.dropItemLabel;
}
@Override
protected void createStyles() {
OptionsFormItem opt = (OptionsFormItem) super.getItem();
opt.deleteItem(getDropItemLabel());
}
protected void revertStyles(String label, String value) {
OptionsFormItem opt = (OptionsFormItem) super.getItem();
opt.addItem(label, value);
}
protected String getValue(String label) {
FBFormItem item = super.getItem();
String value = null;
if (item instanceof OptionsFormItem) {
OptionsFormItem opt = (OptionsFormItem) item;
value = opt.getItems().get(label);
}
return value;
}
@Override
public PopupPanel createPanel() {
final PopupPanel panel = new PopupPanel();
panel.setSize("150px", "66px");
VerticalPanel vPanel = new VerticalPanel();
HorizontalPanel hPanel1 = new HorizontalPanel();
hPanel1.add(new Label(FormBuilderGlobals.getInstance().getI18n().LabelToDelete()));
final TextBox labelBox = new TextBox();
labelBox.addChangeHandler(new ChangeHandler() {
@Override
public void onChange(ChangeEvent event) {
undoableEffect(panel, labelBox.getValue());
}
});
hPanel1.add(labelBox);
Button applyButton = new Button(i18n.ConfirmButton());
applyButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
undoableEffect(panel, labelBox.getValue());
}
});
vPanel.add(hPanel1);
vPanel.add(applyButton);
panel.add(vPanel);
return panel;
}
private void undoableEffect(final PopupPanel panel, final String label) {
Map<String, Object> dataSnapshot = new HashMap<String, Object>();
dataSnapshot.put("deletedLabel", label);
dataSnapshot.put("deletedValue", getValue(label));
bus.fireEvent(new UndoableEvent(dataSnapshot, new UndoableHandler() {
@Override
public void onEvent(UndoableEvent event) { }
@Override
public void undoAction(UndoableEvent event) {
String label = (String) event.getData("deletedLabel");
String value = (String) event.getData("deletedValue");
revertStyles(label, value);
panel.hide();
}
@Override
public void doAction(UndoableEvent event) {
String label = (String) event.getData("deletedLabel");
DeleteItemFormEffect.this.setDropItemLabel(label);
createStyles();
panel.hide();
}
}));
}
@Override
public boolean isValidForItem(FBFormItem item) {
return super.isValidForItem(item) && (item instanceof OptionsFormItem);
}
}