/**
* <copyright>
* </copyright>
*
* $Id$
*/
package org.eclipse.gmf.gmfgraph.provider;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.ResourceLocator;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.command.CommandParameter;
import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
import org.eclipse.emf.edit.provider.IChildCreationExtender;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.IItemPropertySource;
import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.eclipse.emf.edit.provider.ItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.ItemProviderAdapter;
import org.eclipse.emf.edit.provider.ViewerNotification;
import org.eclipse.gmf.gmfgraph.Canvas;
import org.eclipse.gmf.gmfgraph.DiagramLabel;
import org.eclipse.gmf.gmfgraph.GMFGraphFactory;
import org.eclipse.gmf.gmfgraph.GMFGraphPackage;
/**
* This is the item provider adapter for a {@link org.eclipse.gmf.gmfgraph.Canvas} object.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public class CanvasItemProvider
extends ItemProviderAdapter
implements
IEditingDomainItemProvider,
IStructuredItemContentProvider,
ITreeItemContentProvider,
IItemLabelProvider,
IItemPropertySource {
/**
* This constructs an instance from a factory and a notifier.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public CanvasItemProvider(AdapterFactory adapterFactory) {
super(adapterFactory);
}
/**
* This returns the property descriptors for the adapted class.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
if (itemPropertyDescriptors == null) {
super.getPropertyDescriptors(object);
addNamePropertyDescriptor(object);
}
return itemPropertyDescriptors;
}
/**
* This adds a property descriptor for the Name feature.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
protected void addNamePropertyDescriptor(Object object) {
itemPropertyDescriptors.add
(createItemPropertyDescriptor
(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(),
getResourceLocator(),
getString("_UI_Identity_name_feature"),
getString("_UI_PropertyDescriptor_description", "_UI_Identity_name_feature", "_UI_Identity_type"),
GMFGraphPackage.eINSTANCE.getIdentity_Name(),
true,
false,
false,
ItemPropertyDescriptor.GENERIC_VALUE_IMAGE,
null,
null));
}
/**
* This specifies how to implement {@link #getChildren} and is used to deduce an appropriate feature for an
* {@link org.eclipse.emf.edit.command.AddCommand}, {@link org.eclipse.emf.edit.command.RemoveCommand} or
* {@link org.eclipse.emf.edit.command.MoveCommand} in {@link #createCommand}.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public Collection<? extends EStructuralFeature> getChildrenFeatures(Object object) {
if (childrenFeatures == null) {
super.getChildrenFeatures(object);
childrenFeatures.add(GMFGraphPackage.eINSTANCE.getCanvas_Figures());
childrenFeatures.add(GMFGraphPackage.eINSTANCE.getCanvas_Nodes());
childrenFeatures.add(GMFGraphPackage.eINSTANCE.getCanvas_Connections());
childrenFeatures.add(GMFGraphPackage.eINSTANCE.getCanvas_Compartments());
childrenFeatures.add(GMFGraphPackage.eINSTANCE.getCanvas_Labels());
}
return childrenFeatures;
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated NOT
*/
protected EStructuralFeature getChildFeature(Object object, Object child) {
// Modifications for https://bugs.eclipse.org/bugs/show_bug.cgi?id=169310
if (object instanceof Canvas && child instanceof DiagramLabel) {
return GMFGraphPackage.eINSTANCE.getCanvas_Labels();
}
// Check the type of the specified child object and return the proper feature to use for
// adding (see {@link AddCommand}) it as a child.
return super.getChildFeature(object, child);
}
/**
* This returns Canvas.gif.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public Object getImage(Object object) {
return overlayImage(object, getResourceLocator().getImage("full/obj16/Canvas"));
}
/**
* This returns the label text for the adapted class.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public String getText(Object object) {
String label = ((Canvas)object).getName();
return label == null || label.length() == 0 ?
getString("_UI_Canvas_type") :
getString("_UI_Canvas_type") + " " + label;
}
/**
* This handles model notifications by calling {@link #updateChildren} to update any cached
* children and by creating a viewer notification, which it passes to {@link #fireNotifyChanged}.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public void notifyChanged(Notification notification) {
updateChildren(notification);
switch (notification.getFeatureID(Canvas.class)) {
case GMFGraphPackage.CANVAS__NAME:
fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), false, true));
return;
case GMFGraphPackage.CANVAS__FIGURES:
case GMFGraphPackage.CANVAS__NODES:
case GMFGraphPackage.CANVAS__CONNECTIONS:
case GMFGraphPackage.CANVAS__COMPARTMENTS:
case GMFGraphPackage.CANVAS__LABELS:
fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), true, false));
return;
}
super.notifyChanged(notification);
}
/**
* This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children
* that can be created under this object.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
protected void collectNewChildDescriptorsGen(Collection<Object> newChildDescriptors, Object object) {
super.collectNewChildDescriptors(newChildDescriptors, object);
newChildDescriptors.add
(createChildParameter
(GMFGraphPackage.eINSTANCE.getCanvas_Figures(),
GMFGraphFactory.eINSTANCE.createFigureGallery()));
newChildDescriptors.add
(createChildParameter
(GMFGraphPackage.eINSTANCE.getCanvas_Nodes(),
GMFGraphFactory.eINSTANCE.createNode()));
newChildDescriptors.add
(createChildParameter
(GMFGraphPackage.eINSTANCE.getCanvas_Nodes(),
GMFGraphFactory.eINSTANCE.createDiagramLabel()));
newChildDescriptors.add
(createChildParameter
(GMFGraphPackage.eINSTANCE.getCanvas_Connections(),
GMFGraphFactory.eINSTANCE.createConnection()));
newChildDescriptors.add
(createChildParameter
(GMFGraphPackage.eINSTANCE.getCanvas_Compartments(),
GMFGraphFactory.eINSTANCE.createCompartment()));
newChildDescriptors.add
(createChildParameter
(GMFGraphPackage.eINSTANCE.getCanvas_Labels(),
GMFGraphFactory.eINSTANCE.createDiagramLabel()));
}
protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object) {
LinkedList<Object> allGenerated = new LinkedList<Object>();
collectNewChildDescriptorsGen(allGenerated, object);
CommandParameter toRemove = createChildParameter(
GMFGraphPackage.eINSTANCE.getCanvas_Nodes(),
GMFGraphFactory.eINSTANCE.createDiagramLabel());
for (Iterator<Object> generated = allGenerated.iterator(); generated.hasNext();){
final CommandParameter next = (CommandParameter) generated.next();
if (equalsChildParameters(toRemove, next)){
generated.remove();
break;
}
}
newChildDescriptors.addAll(allGenerated);
}
/**
* This returns the label text for {@link org.eclipse.emf.edit.command.CreateChildCommand}.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public String getCreateChildText(Object owner, Object feature, Object child, Collection<?> selection) {
Object childFeature = feature;
Object childObject = child;
boolean qualify =
childFeature == GMFGraphPackage.eINSTANCE.getCanvas_Nodes() ||
childFeature == GMFGraphPackage.eINSTANCE.getCanvas_Labels();
if (qualify) {
return getString
("_UI_CreateChild_text2",
new Object[] { getTypeText(childObject), getFeatureText(childFeature), getTypeText(owner) });
}
return super.getCreateChildText(owner, feature, child, selection);
}
private static boolean equalsChildParameters(CommandParameter first, CommandParameter second){
if (!first.getFeature().equals(second.getFeature())){
return false;
}
assert first.getValue() instanceof EObject;
assert second.getValue() instanceof EObject;
EClass firstEClass = ((EObject)first.getValue()).eClass();
EClass secondEClass = ((EObject)second.getValue()).eClass();
assert firstEClass.getEPackage().getNsURI().equals(secondEClass.getEPackage().getNsURI());
return firstEClass.getClassifierID() == secondEClass.getClassifierID();
}
/**
* Return the resource locator for this item provider's resources.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public ResourceLocator getResourceLocator() {
return ((IChildCreationExtender)adapterFactory).getResourceLocator();
}
}
