/*******************************************************************************
* 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.model.property;
import com.google.gdt.eclipse.designer.model.widgets.support.GwtState;
import com.google.gdt.eclipse.designer.model.widgets.support.IGwtStateProvider;
import com.google.gdt.eclipse.designer.util.ui.ImageSelectionDialog;
import org.eclipse.wb.core.model.ObjectInfo;
import org.eclipse.wb.internal.core.model.property.GenericProperty;
import org.eclipse.wb.internal.core.model.property.Property;
import org.eclipse.wb.internal.core.model.property.editor.PropertyEditor;
import org.eclipse.wb.internal.core.model.property.editor.TextDialogPropertyEditor;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
/**
* {@link PropertyEditor} for selecting URL of image in public resources.
*
* @author scheglov_ke
* @coverage gwt.model.property
*/
public final class ImageUrlPropertyEditor extends TextDialogPropertyEditor {
private Shell m_parentShell;
private GwtState m_state;
////////////////////////////////////////////////////////////////////////////
//
// Instance
//
////////////////////////////////////////////////////////////////////////////
public static final PropertyEditor INSTANCE = new ImageUrlPropertyEditor();
private ImageUrlPropertyEditor() {
}
////////////////////////////////////////////////////////////////////////////
//
// Constructors
//
////////////////////////////////////////////////////////////////////////////
public ImageUrlPropertyEditor(Shell parentShell, GwtState state) {
m_parentShell = parentShell;
m_state = state;
}
////////////////////////////////////////////////////////////////////////////
//
// Presentation
//
////////////////////////////////////////////////////////////////////////////
@Override
protected String getText(Property property) throws Exception {
Object value = property.getValue();
if (value instanceof String) {
return (String) value;
}
return null;
}
////////////////////////////////////////////////////////////////////////////
//
// Editing
//
////////////////////////////////////////////////////////////////////////////
@Override
protected void openDialog(Property property) throws Exception {
GwtState state = getGWTState(property);
ImageSelectionDialog dialog =
new ImageSelectionDialog(getParentShell(),
state.getResourcesProvider(),
state.getModuleDescription(),
property.getTitle());
if (dialog.open() == Window.OK) {
String resourcePath = dialog.getSelectedResourcePath();
property.setValue(resourcePath);
}
}
////////////////////////////////////////////////////////////////////////////
//
// Internal access
//
////////////////////////////////////////////////////////////////////////////
/**
* @return the {@link Shell} to use as parent for {@link ImageSelectionDialog}, externally
* specified or just active {@link Shell}.
*/
private Shell getParentShell() {
return m_parentShell != null ? m_parentShell : Display.getCurrent().getActiveShell();
}
/**
* @return the {@link GwtState} to use with given {@link GenericProperty}, or may be externally
* specified (if we want to use this {@link ImageUrlPropertyEditor} not with
* {@link GenericProperty}).
*/
private GwtState getGWTState(Property property) {
if (m_state != null) {
return m_state;
} else {
ObjectInfo model = property.getAdapter(ObjectInfo.class);
return ((IGwtStateProvider) model).getState();
}
}
}