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/**
* Copyright (c) 2004 - 2009 Eike Stepper (Berlin, 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.buddies.internal.ui;
import org.eclipse.net4j.buddies.IBuddyCollaboration;
import org.eclipse.net4j.buddies.common.IBuddy;
import org.eclipse.net4j.buddies.common.ICollaboration;
import org.eclipse.net4j.buddies.common.IMembership;
import org.eclipse.net4j.buddies.internal.ui.messages.Messages;
import org.eclipse.net4j.util.container.IContainer;
import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
import org.eclipse.net4j.util.ui.UIUtil;
import org.eclipse.net4j.util.ui.actions.LongRunningAction;
import org.eclipse.net4j.util.ui.actions.SafeAction;
import org.eclipse.net4j.util.ui.views.ContainerItemProvider;
import org.eclipse.net4j.util.ui.views.ContainerView;
import org.eclipse.net4j.util.ui.views.IElementFilter;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
/**
* @author Eike Stepper
*/
public abstract class AbstractItemProvider extends ContainerItemProvider<IContainer<Object>>
{
public static final Color GRAY = UIUtil.getDisplay().getSystemColor(SWT.COLOR_GRAY);
private Font bold;
public AbstractItemProvider()
{
}
public AbstractItemProvider(IElementFilter rootElementFilter)
{
super(rootElementFilter);
}
@Override
public void dispose()
{
UIUtil.dispose(bold);
super.dispose();
}
public Font getBold()
{
return bold;
}
@Override
protected Node createNode(Node parent, Object element)
{
if (element instanceof IMembership)
{
IMembership membership = (IMembership)element;
return createMembershipNode(parent, membership);
}
return super.createNode(parent, element);
}
protected abstract Node createMembershipNode(Node parent, IMembership membership);
@Override
public String getText(Object obj)
{
if (obj instanceof IBuddy)
{
IBuddy buddy = (IBuddy)obj;
return buddy.getUserID();
}
if (obj instanceof ICollaboration)
{
ICollaboration collaboration = (ICollaboration)obj;
return collaboration.getTitle();
}
if (obj instanceof IMembership)
{
IMembership membership = (IMembership)obj;
return getText(membership);
}
return super.getText(obj);
}
protected abstract String getText(IMembership membership);
@Override
public Image getImage(Object obj)
{
if (obj instanceof IBuddy)
{
IBuddy buddy = (IBuddy)obj;
switch (buddy.getState())
{
case AVAILABLE:
return SharedIcons.getImage(SharedIcons.OBJ_BUDDY);
case LONESOME:
return SharedIcons.getImage(SharedIcons.OBJ_BUDDY_LONESOME);
case AWAY:
return SharedIcons.getImage(SharedIcons.OBJ_BUDDY_AWAY);
case DO_NOT_DISTURB:
return SharedIcons.getImage(SharedIcons.OBJ_BUDDY_DO_NOT_DISTURB);
}
}
if (obj instanceof ICollaboration)
{
return SharedIcons.getImage(SharedIcons.OBJ_COLLABORATION);
}
if (obj instanceof IMembership)
{
IMembership membership = (IMembership)obj;
return getImage(membership);
}
return super.getImage(obj);
}
protected abstract Image getImage(IMembership membership);
@Override
public Color getForeground(Object obj)
{
if (obj instanceof IBuddy)
{
IBuddy buddy = (IBuddy)obj;
switch (buddy.getState())
{
case AWAY:
case DO_NOT_DISTURB:
return GRAY;
}
}
return super.getForeground(obj);
}
@Override
public Font getFont(Object obj)
{
if (obj instanceof IBuddy)
{
IBuddy buddy = (IBuddy)obj;
switch (buddy.getState())
{
case LONESOME:
return bold;
}
}
return super.getFont(obj);
}
@Override
protected void fillContextMenu(IMenuManager manager, ITreeSelection selection)
{
manager.add(new Separator());
if (selection.size() == 1)
{
Object obj = selection.getFirstElement();
if (obj instanceof IBuddy)
{
manager.add(new RemoveAction(obj));
}
else if (obj instanceof IBuddyCollaboration)
{
final IBuddyCollaboration collaboration = (IBuddyCollaboration)obj;
manager.add(new SafeAction(Messages.getString("AbstractItemProvider.0"), Messages.getString("AbstractItemProvider.1")) //$NON-NLS-1$ //$NON-NLS-2$
{
@Override
protected void safeRun() throws Exception
{
collaboration.leave();
}
});
}
}
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
{
UIUtil.dispose(bold);
super.inputChanged(viewer, oldInput, newInput);
bold = UIUtil.getBoldFont(getViewer().getControl());
}
/**
* @author Eike Stepper
*/
public class RemoveAction extends LongRunningAction
{
private Object object;
public RemoveAction(Object object)
{
super(Messages.getString("AbstractItemProvider.2"), Messages.getString("AbstractItemProvider.3"), ContainerView.getDeleteImageDescriptor()); //$NON-NLS-1$ //$NON-NLS-2$
this.object = object;
}
/**
* @since 2.0
*/
@Override
protected void doRun(IProgressMonitor progressMonitor) throws Exception
{
LifecycleUtil.deactivateNoisy(object);
}
}
}
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