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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. and others. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.ui.views.editor;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.tcf.te.ui.views.activator.UIPlugin;
import org.eclipse.tcf.te.ui.views.interfaces.IUIConstants;
import org.eclipse.tcf.te.ui.views.interfaces.ImageConsts;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.IPersistableElement;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.navigator.CommonNavigator;
import org.eclipse.ui.navigator.CommonViewer;
/**
* Editor input implementation.
*/
public final class EditorInput implements IEditorInput, IPersistableElement {
// The parent editor id
private final String id;
// The editor input name, once determined
/* default */ String name;
// The node (selection) the editor is showing
private final Object node;
/**
* Constructor.
*
* @param node The node (selection) the editor is showing. Must not be <code>null</code>.
*/
public EditorInput(Object node) {
this(node, IUIConstants.ID_EDITOR);
}
/**
* Constructor.
*
* @param node The node (selection) the editor is showing. Must not be <code>null</code>.
* @param id The parent editor id or <code>null</code>
*/
public EditorInput(Object node, String id) {
super();
this.id = id;
Assert.isNotNull(node);
this.node = node;
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (node != null && obj instanceof EditorInput) {
return node.equals(((EditorInput)obj).node)
&& (id != null ? id.equals(((EditorInput)obj).id) : ((EditorInput)obj).id == null);
}
return super.equals(obj);
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return node != null ? node.hashCode() << 16 + (id != null ? id.hashCode() : 0) : super.hashCode();
}
/* (non-Javadoc)
* @see org.eclipse.ui.IEditorInput#exists()
*/
@Override
public boolean exists() {
return node != null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.IEditorInput#getImageDescriptor()
*/
@Override
public ImageDescriptor getImageDescriptor() {
return UIPlugin.getImageDescriptor(ImageConsts.EDITOR);
}
/* (non-Javadoc)
* @see org.eclipse.ui.IEditorInput#getName()
*/
@Override
public String getName() {
if (name == null && node != null) {
CommonViewer viewer = getViewer();
name = viewer != null && viewer.getLabelProvider() instanceof ILabelProvider ? ((ILabelProvider)viewer.getLabelProvider()).getText(node) : node.toString();
}
return name != null ? name : ""; //$NON-NLS-1$
}
/**
* Get the common viewer used by the main view instance.
*
* @return The common viewer or <code>null</code>
*/
protected CommonViewer getViewer() {
if (PlatformUI.getWorkbench() != null && PlatformUI.getWorkbench().getActiveWorkbenchWindow() != null
&& PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage() != null) {
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
IViewPart part = page.findView(IUIConstants.ID_EXPLORER);
if (part instanceof CommonNavigator) {
return ((CommonNavigator)part).getCommonViewer();
}
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.IEditorInput#getPersistable()
*/
@Override
public IPersistableElement getPersistable() {
// We cannot persist this kind of editor input.
return null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.IPersistableElement#getFactoryId()
*/
@Override
public String getFactoryId() {
return null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.IPersistable#saveState(org.eclipse.ui.IMemento)
*/
@Override
public void saveState(IMemento memento) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IEditorInput#getToolTipText()
*/
@Override
public String getToolTipText() {
return getName();
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
*/
@Override
public Object getAdapter(Class adapter) {
if (IPersistableElement.class.isAssignableFrom(adapter)) {
return getPersistable();
}
// If the adapter can be applied to the node instance, return the node
Object adapted = Platform.getAdapterManager().getAdapter(node, adapter);
if (adapted != null) return adapted;
return Platform.getAdapterManager().getAdapter(this, adapter);
}
}
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