/*
* 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.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.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasHorizontalAlignment.HorizontalAlignmentConstant;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.gwtent.reflection.client.Reflectable;
/**
* Allows to set alignment
*/
@Reflectable
public class HorizontalAlignmentFormEffect extends FBFormEffect {
private ListBox alignmentBox = new ListBox();
private final I18NConstants i18n = FormBuilderGlobals.getInstance().getI18n();
private final EventBus bus = CommonGlobals.getInstance().getEventBus();
public HorizontalAlignmentFormEffect() {
super(FormBuilderGlobals.getInstance().getI18n().HorizontalAlignment(), true);
alignmentBox.addItem(i18n.AlignLeft(), i18n.AlignLeft());
alignmentBox.addItem(i18n.AlignRight(), i18n.AlignRight());
alignmentBox.addItem(i18n.AlignCenter(), i18n.AlignCenter());
alignmentBox.addItem(i18n.AlignJustify(), i18n.AlignJustify());
}
@Override
protected void createStyles() {
int index = this.alignmentBox.getSelectedIndex();
String value = this.alignmentBox.getValue(index);
Widget widget = getWidget();
if (widget instanceof HasHorizontalAlignment) {
HasHorizontalAlignment hw = (HasHorizontalAlignment) widget;
HorizontalAlignmentConstant align = null;
if (i18n.AlignLeft().equals(value)) {
align = HasHorizontalAlignment.ALIGN_LEFT;
} else if (i18n.AlignRight().equals(value)) {
align = HasHorizontalAlignment.ALIGN_RIGHT;
} else if (i18n.AlignCenter().equals(value)) {
align = HasHorizontalAlignment.ALIGN_CENTER;
} else if (i18n.AlignJustify().equals(value)) {
align = HasHorizontalAlignment.ALIGN_JUSTIFY;
}
Map<String, Object> dataSnapshot = new HashMap<String, Object>();
dataSnapshot.put("oldAlignment", hw.getHorizontalAlignment());
dataSnapshot.put("newAlignment", align);
dataSnapshot.put("hwidget", hw);
bus.fireEvent(new UndoableEvent(dataSnapshot, new UndoableHandler() {
@Override
public void onEvent(UndoableEvent event) { }
@Override
public void undoAction(UndoableEvent event) {
HorizontalAlignmentConstant oldAlignment = (HorizontalAlignmentConstant) event.getData("oldAlignment");
HasHorizontalAlignment hwidget = (HasHorizontalAlignment) event.getData("hwidget");
hwidget.setHorizontalAlignment(oldAlignment);
}
@Override
public void doAction(UndoableEvent event) {
HorizontalAlignmentConstant newAlignment = (HorizontalAlignmentConstant) event.getData("newAlignment");
HasHorizontalAlignment hwidget = (HasHorizontalAlignment) event.getData("hwidget");
hwidget.setHorizontalAlignment(newAlignment);
}
}));
}
}
@Override
public void remove(FBFormItem item) {
super.remove(item);
Widget widget = getWidget();
if (widget instanceof HasHorizontalAlignment) {
HasHorizontalAlignment hw = (HasHorizontalAlignment) widget;
hw.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_DEFAULT);
}
}
@Override
public boolean isValidForItem(FBFormItem item) {
return item.getWidget() != null && item.getWidget() instanceof HasHorizontalAlignment;
}
@Override
public PopupPanel createPanel() {
final PopupPanel panel = new PopupPanel();
panel.setSize("300px", "200px");
VerticalPanel vPanel = new VerticalPanel();
HorizontalPanel hPanel = new HorizontalPanel();
hPanel.add(new Label(i18n.Alignment()));
alignmentBox.addChangeHandler(new ChangeHandler() {
@Override
public void onChange(ChangeEvent event) {
HorizontalAlignmentFormEffect.this.createStyles();
panel.hide();
};
});
hPanel.add(alignmentBox);
Button fontSizeButton = new Button(i18n.ConfirmButton());
fontSizeButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
HorizontalAlignmentFormEffect.this.createStyles();
panel.hide();
}
});
vPanel.add(alignmentBox);
vPanel.add(fontSizeButton);
panel.add(vPanel);
return panel;
}
}