/*******************************************************************************
* 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.gxt.databinding.model;
import com.google.common.collect.Lists;
import com.google.gdt.eclipse.designer.gxt.databinding.model.bindings.BindingInfo;
import org.eclipse.wb.internal.core.databinding.model.IObserveInfo;
import org.eclipse.wb.internal.core.databinding.model.IObservePresentation;
import org.eclipse.wb.internal.core.databinding.model.presentation.IObservePresentationDecorator;
import org.eclipse.wb.internal.core.databinding.model.reference.IReferenceProvider;
import org.eclipse.wb.internal.core.databinding.model.reference.StringReferenceProvider;
import org.eclipse.wb.internal.core.utils.ui.SwtResourceManager;
import org.apache.commons.collections.CollectionUtils;
import java.util.Collections;
import java.util.List;
/**
*
* @author lobas_av
*
*/
public abstract class ObserveInfo implements IObserveInfo {
private Class<?> m_objectType;
private final IReferenceProvider m_referenceProvider;
private boolean m_setBindingDecoration;
////////////////////////////////////////////////////////////////////////////
//
// Constructors
//
////////////////////////////////////////////////////////////////////////////
public ObserveInfo(Class<?> objectType, String reference) {
this(objectType, new StringReferenceProvider(reference));
}
public ObserveInfo(Class<?> objectType, IReferenceProvider referenceProvider) {
m_objectType = objectType;
m_referenceProvider = referenceProvider;
}
////////////////////////////////////////////////////////////////////////////
//
// Access
//
////////////////////////////////////////////////////////////////////////////
/**
* @return {@link Class} type of observe object or property.
*/
public final Class<?> getObjectType() {
return m_objectType;
}
protected final void setObjectType(Class<?> objectType) {
m_objectType = objectType;
}
/**
* @return {@link IReferenceProvider} reference provider on observe object or property.
*/
public final IReferenceProvider getReferenceProvider() {
return m_referenceProvider;
}
/**
* @return the reference on observe object or property.
*/
public final String getReference() throws Exception {
return m_referenceProvider.getReference();
}
////////////////////////////////////////////////////////////////////////////
//
// Binding
//
////////////////////////////////////////////////////////////////////////////
private List<BindingInfo> m_bindings;
protected final void setBindingDecoration(boolean setBindingDecoration) {
m_setBindingDecoration = setBindingDecoration;
}
public void createBinding(BindingInfo binding) throws Exception {
if (m_bindings == null) {
m_bindings = Lists.newArrayList();
}
m_bindings.add(binding);
updateBindingDecoration();
}
public void deleteBinding(BindingInfo binding) throws Exception {
m_bindings.remove(binding);
if (m_bindings.isEmpty()) {
m_bindings = null;
}
updateBindingDecoration();
}
public List<BindingInfo> getBindings() {
if (m_bindings == null) {
return Collections.emptyList();
}
return m_bindings;
}
private void updateBindingDecoration() throws Exception {
if (m_setBindingDecoration) {
IObservePresentation presentation = getPresentation();
if (presentation instanceof IObservePresentationDecorator) {
IObservePresentationDecorator presentationDecorator =
(IObservePresentationDecorator) presentation;
presentationDecorator.setBindingDecorator(CollectionUtils.isEmpty(m_bindings)
? 0
: SwtResourceManager.TOP_RIGHT);
}
}
}
}