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/*******************************************************************************
* Copyright (c) 2000, 2012, 2015 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Brock Janiczak (brockj_eclipse@ihug.com.au) - handler registration
* Dirk Fauth <dirk.fauth@googlemail.com> - Bug 473063
*******************************************************************************/
package org.eclipse.ui.internal.registry;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.IPerspectiveFactory;
import org.eclipse.ui.IPluginContribution;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.internal.WorkbenchImages;
import org.eclipse.ui.plugin.AbstractUIPlugin;
/**
* PerspectiveDescriptor.
* <p>
* A PerspectiveDesciptor has 3 states:
* </p>
* <ol>
* <li>It <code>isPredefined()</code>, in which case it was defined from an
* extension point.</li>
* <li>It <code>isPredefined()</code> and <code>hasCustomFile</code>, in
* which case the user has customized a predefined perspective.</li>
* <li>It <code>hasCustomFile</code>, in which case the user created a new
* perspective.</li>
* </ol>
*
*/
public class PerspectiveDescriptor implements IPerspectiveDescriptor,
IPluginContribution {
private String id;
private String label;
private ImageDescriptor image;
private IConfigurationElement configElement;
private boolean hasCustomDefinition;
private String pluginId;
private String originalId; // ID of ancestor that was based on a config
// element
public PerspectiveDescriptor(String id, String label, PerspectiveDescriptor originalDescriptor) {
this.id = id;
this.label = label;
if (originalDescriptor != null) {
this.originalId = originalDescriptor.getOriginalId();
this.image = originalDescriptor.getImageDescriptor();
this.pluginId = originalDescriptor.getPluginId();
this.hasCustomDefinition = true;
}
}
PerspectiveDescriptor(String id, IConfigurationElement element) {
this.id = id;
this.configElement = element;
}
public IConfigurationElement getConfigElement() {
return configElement;
}
public IPerspectiveFactory createFactory() {
try {
return (IPerspectiveFactory) configElement
.createExecutableExtension(IWorkbenchRegistryConstants.ATT_CLASS);
} catch (CoreException e) {
// TODO Auto-generated catch block
e.printStackTrace();
throw new RuntimeException(e);
}
}
@Override
public String getDescription() {
return configElement == null ? null : RegistryReader.getDescription(configElement);
}
@Override
public String getId() {
return id;
}
public String getOriginalId() {
if (originalId == null) {
originalId = getId();
}
return originalId;
}
@Override
public ImageDescriptor getImageDescriptor() {
if (image != null)
return image;
// Try and get an image from the IConfigElement
if (configElement != null) {
String icon = configElement.getAttribute(IWorkbenchRegistryConstants.ATT_ICON);
if (icon != null) {
image = AbstractUIPlugin.imageDescriptorFromPlugin(
configElement.getNamespaceIdentifier(), icon);
}
}
// Get a default image
if (image == null)
image = WorkbenchImages.getImageDescriptor(ISharedImages.IMG_ETOOL_DEF_PERSPECTIVE);
return image;
}
/**
* Set the {@link ImageDescriptor} that should be used to provide the
* perspective icon. Needed for contributing perspectives via model
* fragments.
*
* @param image
* The {@link ImageDescriptor} to use
*/
public void setImageDescriptor(ImageDescriptor image) {
this.image = image;
}
@Override
public String getLabel() {
return configElement == null ? label : configElement
.getAttribute(IWorkbenchRegistryConstants.ATT_NAME);
}
@Override
public String getLocalId() {
return getId();
}
@Override
public String getPluginId() {
return configElement == null ? pluginId : configElement.getNamespaceIdentifier();
}
/**
* Returns <code>true</code> if this perspective has a custom definition.
*
* @return whether this perspective has a custom definition
*/
public boolean hasCustomDefinition() {
return hasCustomDefinition;
}
public void setHasCustomDefinition(boolean value) {
hasCustomDefinition = value;
}
/**
* Returns <code>true</code> if this perspective is predefined by an
* extension.
*
* @return boolean whether this perspective is predefined by an extension
*/
public boolean isPredefined() {
return configElement != null;
}
/**
* Returns <code>true</code> if this perspective is a singleton.
*
* @return whether this perspective is a singleton
*/
public boolean isSingleton() {
return false;
}
@Override
public String toString() {
return this.getClass().getName() + " {id=" + getId() + "}"; //$NON-NLS-1$//$NON-NLS-2$
}
}
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