/*******************************************************************************
* Copyright 2011 Google Inc. All Rights Reserved.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* 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 com.google.gdt.eclipse.designer.uibinder.model.widgets;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.gdt.eclipse.designer.model.widgets.panels.AbstractWidgetHandle;
import com.google.gdt.eclipse.designer.model.widgets.panels.IStackPanelInfo;
import com.google.gdt.eclipse.designer.model.widgets.support.DOMUtils;
import com.google.gdt.eclipse.designer.model.widgets.support.GwtState;
import org.eclipse.wb.core.model.ObjectInfo;
import org.eclipse.wb.draw2d.geometry.Rectangle;
import org.eclipse.wb.internal.core.model.property.Property;
import org.eclipse.wb.internal.core.model.property.category.PropertyCategory;
import org.eclipse.wb.internal.core.model.property.editor.string.StringPropertyEditor;
import org.eclipse.wb.internal.core.model.util.StackContainerSupport;
import org.eclipse.wb.internal.core.utils.reflect.ReflectionUtils;
import org.eclipse.wb.internal.core.xml.model.EditorContext;
import org.eclipse.wb.internal.core.xml.model.XmlObjectInfo;
import org.eclipse.wb.internal.core.xml.model.broadcast.XmlObjectAddProperties;
import org.eclipse.wb.internal.core.xml.model.broadcast.XmlObjectMove;
import org.eclipse.wb.internal.core.xml.model.clipboard.ClipboardCommand;
import org.eclipse.wb.internal.core.xml.model.creation.CreationSupport;
import org.eclipse.wb.internal.core.xml.model.description.ComponentDescription;
import org.eclipse.wb.internal.core.xml.model.property.XmlProperty;
import java.util.List;
import java.util.Map;
/**
* Model for <code>com.google.gwt.user.client.ui.StackPanel</code>.
*
* @author scheglov_ke
* @coverage GWT.UiBinder.model
*/
public final class StackPanelInfo extends ComplexPanelInfo implements IStackPanelInfo<WidgetInfo> {
private final StackContainerSupport<WidgetInfo> m_stackContainer =
new StackContainerSupport<WidgetInfo>(this) {
@Override
protected List<WidgetInfo> getChildren() {
return getChildrenWidgets();
}
};
////////////////////////////////////////////////////////////////////////////
//
// Constructor
//
////////////////////////////////////////////////////////////////////////////
public StackPanelInfo(EditorContext context,
ComponentDescription description,
CreationSupport creationSupport) throws Exception {
super(context, description, creationSupport);
contributeStackTextProperty();
}
////////////////////////////////////////////////////////////////////////////
//
// Access
//
////////////////////////////////////////////////////////////////////////////
/**
* Ensures that given {@link WidgetInfo} is shown on this {@link StackPanelInfo}.
*/
public void showWidget(WidgetInfo widget) {
m_stackContainer.setActive(widget);
}
////////////////////////////////////////////////////////////////////////////
//
// Refresh
//
////////////////////////////////////////////////////////////////////////////
@Override
protected void refresh_afterCreate() throws Exception {
super.refresh_afterCreate();
showActiveWidget();
}
private void showActiveWidget() throws Exception {
WidgetInfo active = m_stackContainer.getActive();
if (active != null) {
int index =
(Integer) ReflectionUtils.invokeMethod(
getObject(),
"getWidgetIndex(com.google.gwt.user.client.ui.Widget)",
active.getObject());
ReflectionUtils.invokeMethod(getObject(), "showStack(int)", index);
}
}
@Override
protected void refresh_fetch() throws Exception {
super.refresh_fetch();
prepareWidgetHandles();
}
////////////////////////////////////////////////////////////////////////////
//
// Header
//
////////////////////////////////////////////////////////////////////////////
/**
* Object that describes header for widgets on {@link StackPanelInfo}.
*/
public class WidgetHandle extends AbstractWidgetHandle<WidgetInfo> {
////////////////////////////////////////////////////////////////////////////
//
// Constructor
//
////////////////////////////////////////////////////////////////////////////
public WidgetHandle(WidgetInfo widget) {
super(widget);
}
////////////////////////////////////////////////////////////////////////////
//
// Access
//
////////////////////////////////////////////////////////////////////////////
@Override
public Rectangle getBounds() {
return m_widgetToHandleBounds.get(m_widget);
}
@Override
public void show() {
showWidget(m_widget);
}
}
////////////////////////////////////////////////////////////////////////////
//
// WidgetHandle objects
//
////////////////////////////////////////////////////////////////////////////
private final List<WidgetHandle> m_widgetHandles = Lists.newArrayList();
private final Map<WidgetInfo, Rectangle> m_widgetToHandleBounds = Maps.newHashMap();
/**
* Return list of all {@link WidgetHandle}'s.
*/
public List<WidgetHandle> getWidgetHandles() {
return m_widgetHandles;
}
/**
* Fills {@link #m_widgetHandles}.
*/
private void prepareWidgetHandles() throws Exception {
GwtState state = getState();
DOMUtils dom = state.getDomUtils();
m_widgetHandles.clear();
// prepare Table body
Object bodyElement;
{
Object panelObject = getObject();
Object tableElement = state.getUIObjectUtils().getElement(panelObject);
bodyElement = dom.getChild(tableElement, 0);
}
// prepare handle object for each widget
List<WidgetInfo> widgets = getChildrenWidgets();
for (int index = 0; index < widgets.size(); index++) {
WidgetInfo widget = widgets.get(index);
Object headerElement = dom.getChild(bodyElement, 2 * index + 0);
// prepare bounds
Rectangle headerBounds = state.getAbsoluteBounds(headerElement);
absoluteToRelative(headerBounds);
// add handle object
m_widgetHandles.add(new WidgetHandle(widget));
m_widgetToHandleBounds.put(widget, headerBounds);
}
}
////////////////////////////////////////////////////////////////////////////
//
// Commands
//
////////////////////////////////////////////////////////////////////////////
public void command_APPEND_after(WidgetInfo component, WidgetInfo nextComponent) throws Exception {
getStackTextProperty(component).setValue("New widget");
}
public void command_TARGET_after(WidgetInfo component, WidgetInfo nextComponent) throws Exception {
showWidget(component);
}
////////////////////////////////////////////////////////////////////////////
//
// Clipboard
//
////////////////////////////////////////////////////////////////////////////
@Override
protected void clipboardCopy_addWidgetCommands(WidgetInfo widget, List<ClipboardCommand> commands)
throws Exception {
final Object stackText = getStackTextProperty(widget).getValue();
commands.add(new PanelClipboardCommand<StackPanelInfo>(widget) {
private static final long serialVersionUID = 0L;
@Override
protected void add(StackPanelInfo panel, WidgetInfo widget) throws Exception {
panel.command_CREATE2(widget, null);
panel.getStackTextProperty(widget).setValue(stackText);
}
});
}
////////////////////////////////////////////////////////////////////////////
//
// StackText property
//
////////////////////////////////////////////////////////////////////////////
/**
* When {@link WidgetInfo} is moved out of its {@link StackPanelInfo}.
*/
private void removeStackText_whenMoveOut() {
addBroadcastListener(new XmlObjectMove() {
@Override
public void before(XmlObjectInfo child, ObjectInfo oldParent, ObjectInfo newParent)
throws Exception {
if (oldParent == StackPanelInfo.this && newParent != oldParent) {
Property property = getStackTextProperty(child);
property.setValue(Property.UNKNOWN_VALUE);
}
}
});
}
/**
* Contributes "StackText" property to each {@link WidgetInfo} child.
*/
private void contributeStackTextProperty() {
addBroadcastListener(new XmlObjectAddProperties() {
public void invoke(XmlObjectInfo object, List<Property> properties) throws Exception {
if (object instanceof WidgetInfo && getChildren().contains(object)) {
Property property = getStackTextProperty(object);
properties.add(property);
}
}
});
removeStackText_whenMoveOut();
}
/**
* @return the existing or new "StackText" property.
*/
private Property getStackTextProperty(final XmlObjectInfo widget) throws Exception {
Property property = (Property) widget.getArbitraryValue(this);
if (property == null) {
final String attributeName = getElement().getTagNS() + "StackPanel-text";
property = new XmlProperty(widget, "StackText", StringPropertyEditor.INSTANCE) {
@Override
public boolean isModified() throws Exception {
return getValue() != UNKNOWN_VALUE;
}
@Override
public Object getValue() throws Exception {
String attributeValue = widget.getElement().getAttribute(attributeName);
return attributeValue != null ? attributeValue : UNKNOWN_VALUE;
}
@Override
protected void setValueEx(Object value) throws Exception {
if (value instanceof String) {
widget.setAttribute(attributeName, (String) value);
}
if (value == UNKNOWN_VALUE) {
widget.removeAttribute(attributeName);
}
}
};
property.setCategory(PropertyCategory.system(7));
}
return property;
}
}