FileItemProvider.java

/**
 * Copyright (c) 2011 Hannes Niederhausen.
 * 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
 * 
 * Contributors:
 * Hannes Niederhausen - Initial API and implementation
 * 
 */
package de.hannesniederhausen.storynotes.model.provider;

import de.hannesniederhausen.storynotes.model.File;
import de.hannesniederhausen.storynotes.model.StorynotesFactory;
import de.hannesniederhausen.storynotes.model.StorynotesPackage;

import java.util.Collection;
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.EStructuralFeature;

import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
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;

/**
 * This is the item provider adapter for a {@link de.hannesniederhausen.storynotes.model.File} object.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public class FileItemProvider 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 FileItemProvider(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);

			addFilenamePropertyDescriptor(object);
			addAuthorPropertyDescriptor(object);
			addVersionPropertyDescriptor(object);
		}
		return itemPropertyDescriptors;
	}

	/**
	 * This adds a property descriptor for the Filename feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addFilenamePropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
				((ComposeableAdapterFactory) adapterFactory)
						.getRootAdapterFactory(),
				getResourceLocator(),
				getString("_UI_File_filename_feature"),
				getString("_UI_PropertyDescriptor_description",
						"_UI_File_filename_feature", "_UI_File_type"),
				StorynotesPackage.Literals.FILE__FILENAME, true, false, false,
				ItemPropertyDescriptor.GENERIC_VALUE_IMAGE, null, null));
	}

	/**
	 * This adds a property descriptor for the Author feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addAuthorPropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
				((ComposeableAdapterFactory) adapterFactory)
						.getRootAdapterFactory(),
				getResourceLocator(),
				getString("_UI_File_author_feature"),
				getString("_UI_PropertyDescriptor_description",
						"_UI_File_author_feature", "_UI_File_type"),
				StorynotesPackage.Literals.FILE__AUTHOR, true, false, false,
				ItemPropertyDescriptor.GENERIC_VALUE_IMAGE, null, null));
	}

	/**
	 * This adds a property descriptor for the Version feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addVersionPropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
				((ComposeableAdapterFactory) adapterFactory)
						.getRootAdapterFactory(),
				getResourceLocator(),
				getString("_UI_File_version_feature"),
				getString("_UI_PropertyDescriptor_description",
						"_UI_File_version_feature", "_UI_File_type"),
				StorynotesPackage.Literals.FILE__VERSION, 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(StorynotesPackage.Literals.FILE__PROJECTS);
		}
		return childrenFeatures;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EStructuralFeature getChildFeature(Object object, Object child) {
		// 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);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean hasChildren(Object object) {
		return hasChildren(object, true);
	}

	/**
	 * This returns File.gif.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object getImage(Object object) {
		return overlayImage(object,
				getResourceLocator().getImage("full/obj16/File"));
	}

	/**
	 * This returns the label text for the adapted class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String getText(Object object) {
		String label = ((File) object).getFilename();
		return label == null || label.length() == 0 ? getString("_UI_File_type")
				: getString("_UI_File_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(File.class)) {
		case StorynotesPackage.FILE__FILENAME:
		case StorynotesPackage.FILE__AUTHOR:
		case StorynotesPackage.FILE__VERSION:
			fireNotifyChanged(new ViewerNotification(notification,
					notification.getNotifier(), false, true));
			return;
		case StorynotesPackage.FILE__PROJECTS:
			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
	 */
	@Override
	protected void collectNewChildDescriptors(
			Collection<Object> newChildDescriptors, Object object) {
		super.collectNewChildDescriptors(newChildDescriptors, object);

		newChildDescriptors.add(createChildParameter(
				StorynotesPackage.Literals.FILE__PROJECTS,
				StorynotesFactory.eINSTANCE.createProject()));
	}

	/**
	 * Return the resource locator for this item provider's resources.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public ResourceLocator getResourceLocator() {
		return StorynotesEditPlugin.INSTANCE;
	}

}