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/*
* Copyright (c) 2008-2012, 2015 Eike Stepper (Loehne, Germany) 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:
* Victor Roldan Betancort - initial API and implementation
* Eike Stepper - maintenance
*/
package org.eclipse.emf.cdo.ui;
import org.eclipse.emf.cdo.CDOElement;
import org.eclipse.emf.cdo.CDOElement.StateProvider;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.CDOState;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.lock.CDOLockOwner;
import org.eclipse.emf.cdo.common.lock.CDOLockState;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.internal.ui.bundle.OM;
import org.eclipse.emf.cdo.ui.shared.SharedIcons;
import org.eclipse.emf.cdo.util.CDOUtil;
import org.eclipse.net4j.util.AdapterUtil;
import org.eclipse.net4j.util.ObjectUtil;
import org.eclipse.net4j.util.StringUtil;
import org.eclipse.net4j.util.event.IEvent;
import org.eclipse.net4j.util.event.IListener;
import org.eclipse.net4j.util.om.pref.OMPreferencesChangeEvent;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.spi.cdo.InternalCDOObject;
import org.eclipse.jface.viewers.ILabelDecorator;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.swt.graphics.Image;
import java.text.MessageFormat;
/**
* Decorates labels of {@link CDOObject CDO objects} according to a pattern.
*
* @author Victor Roldan Betancort
* @since 2.0
*/
public class CDOLabelDecorator implements ILabelDecorator
{
public static final String[] DECORATION_PROPOSALS = { "${element}", "${id}", "${state}", "${created}", "${revised}" }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
public static final String DEFAULT_DECORATION = DECORATION_PROPOSALS[0] + " " + DECORATION_PROPOSALS[2]; //$NON-NLS-1$
public static final String NO_DECORATION = DECORATION_PROPOSALS[0];
private static final String[] DECORATION_ARGS = { "{0}", "{1}", "{2}", "{3,date} {3,time,HH:mm:ss:SSS}", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
"{4,date} {4,time,HH:mm:ss:SSS}" }; //$NON-NLS-1$
public static final String DECORATOR_ID = "org.eclipse.emf.cdo.ui.CDOLabelDecorator"; //$NON-NLS-1$
private static final Image LOCK_OVERLAY = SharedIcons.getImage(SharedIcons.OVR_LOCK);
private static final Image LOCK_SELF_OVERLAY = SharedIcons.getImage(SharedIcons.OVR_LOCK_SELF);
private String pattern;
private IListener preferenceListener = new IListener()
{
public void notifyEvent(IEvent event)
{
@SuppressWarnings("unchecked")
OMPreferencesChangeEvent<String> preferenceChangeEvent = (OMPreferencesChangeEvent<String>)event;
if (OM.PREF_LABEL_DECORATION.getName().equals(preferenceChangeEvent.getPreference().getName()))
{
pattern = parsePattern(preferenceChangeEvent.getNewValue());
}
}
};
public CDOLabelDecorator()
{
pattern = parsePattern(OM.PREF_LABEL_DECORATION.getValue());
OM.PREFS.addListener(preferenceListener);
}
public CDOLabelDecorator(String pattern)
{
this.pattern = pattern;
}
public void dispose()
{
OM.PREFS.removeListener(preferenceListener);
}
public String parsePattern(String unparsedPattern)
{
if (ObjectUtil.equals(unparsedPattern, NO_DECORATION))
{
return null;
}
return StringUtil.replace(unparsedPattern, DECORATION_PROPOSALS, DECORATION_ARGS);
}
public Image decorateImage(Image image, Object element)
{
try
{
image = decorate(image, element);
}
catch (RuntimeException ignore)
{
}
return image;
}
public String decorateText(String text, Object element)
{
try
{
if (pattern != null)
{
CDOElement cdoElement = AdapterUtil.adapt(element, CDOElement.class);
if (cdoElement != null)
{
element = cdoElement.getDelegate();
}
if (element instanceof EObject)
{
EObject eObject = (EObject)element;
InternalCDOObject cdoObject = (InternalCDOObject)CDOUtil.getCDOObject(eObject, false);
if (cdoObject != null)
{
CDOID id = cdoObject.cdoID();
String state = getObjectState(cdoObject);
CDORevision rev = cdoObject.cdoRevision();
long created = rev == null ? CDORevision.UNSPECIFIED_DATE : rev.getTimeStamp();
long revised = rev == null ? CDORevision.UNSPECIFIED_DATE : rev.getRevised();
text = MessageFormat.format(pattern, text, id, state, created, revised).trim();
}
}
}
}
catch (RuntimeException ignore)
{
}
return text;
}
public boolean isLabelProperty(Object element, String property)
{
return false;
}
public void addListener(ILabelProviderListener listener)
{
// Ignore listeners, DecoratorManager handles them.
}
public void removeListener(ILabelProviderListener listener)
{
// Ignore listeners, DecoratorManager handles them.
}
/**
* @since 4.4
*/
protected String getObjectState(InternalCDOObject object)
{
CDOState state = null;
StateProvider stateProvider = AdapterUtil.adapt(object, StateProvider.class);
if (stateProvider != null)
{
state = stateProvider.getState(object);
}
else
{
state = object.cdoState();
}
if (state == null)
{
return "";
}
return state.toString().toLowerCase();
}
/**
* @since 4.4
*/
public static Image decorate(Image image, Object element)
{
if (element instanceof EObject)
{
EObject eObject = (EObject)element;
CDOObject cdoObject = CDOUtil.getCDOObject(eObject, false);
if (cdoObject != null)
{
CDOLockState lockState = cdoObject.cdoLockState();
if (lockState != null)
{
CDOLockOwner owner = lockState.getWriteLockOwner();
if (owner != null)
{
if (owner.equals(cdoObject.cdoView()))
{
image = OM.getOverlayImage(image, LOCK_SELF_OVERLAY, 10, 0);
}
else
{
image = OM.getOverlayImage(image, LOCK_OVERLAY, 10, 0);
}
}
}
}
}
// Use default
return image;
}
}
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