package org.xmind.ui.internal.mindmap;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.xmind.core.ITopic;
import org.xmind.core.event.CoreEvent;
import org.xmind.core.event.ICoreEventRegister;
import org.xmind.gef.EditDomain;
import org.xmind.gef.IGraphicalViewer;
import org.xmind.gef.IViewer;
import org.xmind.ui.mindmap.AbstractInfoItemContributor;
import org.xmind.ui.mindmap.IDrillDownTraceService;
import org.xmind.ui.mindmap.IInfoPart;
import org.xmind.ui.mindmap.ITopicPart;
import org.xmind.ui.mindmap.MindMapUI;
public class DrillUpInfoItemContributor extends AbstractInfoItemContributor {
private static class IconTipDrillUpAction extends Action {
private IViewer viewer;
public IconTipDrillUpAction(IViewer viewer) {
this.viewer = viewer;
}
public void run() {
EditDomain domain = viewer.getEditDomain();
if (domain == null)
return;
domain.handleRequest(MindMapUI.REQ_DRILLUP, viewer);
}
}
public IAction createAction(ITopicPart topicPart, ITopic topic) {
IViewer viewer = topicPart.getSite().getViewer();
if (viewer != null && topic.equals(viewer.getAdapter(ITopic.class))
&& topic.getParent() != null && hasTraceService(viewer)) {
return new IconTipDrillUpAction(viewer);
}
return null;
}
private boolean hasTraceService(IViewer viewer) {
if (viewer instanceof IGraphicalViewer) {
return ((IGraphicalViewer) viewer)
.getService(IDrillDownTraceService.class) != null;
}
return false;
}
@Override
protected void registerTopicEvent(ITopicPart topicPart, ITopic topic,
ICoreEventRegister register) {
}
@Override
protected void handleTopicEvent(IInfoPart infoPart, CoreEvent event) {
}
@Override
protected void handleTopicEvent(ITopicPart topicPart, CoreEvent event) {
}
}