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TreeViewerWithMenu.java
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TreeViewerWithMenu.java
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package com.xored.q7.quality.mockups.issues.parts;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import com.xored.q7.quality.mockups.issues.BaseMockupPart;
import com.xored.q7.quality.mockups.ui.treeviewer.model.TreeItem;
import com.xored.q7.quality.mockups.ui.treeviewer.model.TreeViewerModel;
import com.xored.q7.quality.mockups.ui.treeviewer.provider.CategoryProvider;
import com.xored.q7.quality.mockups.ui.treeviewer.provider.TreeLabelProvider;
public class TreeViewerWithMenu extends BaseMockupPart {
@Override
public Control construct(Composite parent) {
GridLayoutFactory.swtDefaults().numColumns(1).applyTo(parent);
final TreeViewer viewer = new TreeViewer(parent, SWT.MULTI
| SWT.H_SCROLL | SWT.V_SCROLL);
GridDataFactory.fillDefaults().grab(true, true)
.applyTo(viewer.getTree());
viewer.setContentProvider(new CategoryProvider());
viewer.setLabelProvider(new TreeLabelProvider());
viewer.setAutoExpandLevel(2);
viewer.setInput(new TreeViewerModel());
final MenuManager m = new MenuManager();
m.setRemoveAllWhenShown(true);
final Action a1 = new Action("Action1") {
@Override
public void run() {
MessageDialog.openInformation(null, "Action1", "Action1 called");
}
};
final Action a2 = new Action("Action2") {
@Override
public void run() {
MessageDialog.openInformation(null, "Action2", "Action2 called");
}
};
m.addMenuListener(new IMenuListener() {
@Override
public void menuAboutToShow(IMenuManager manager) {
IStructuredSelection s = (IStructuredSelection) viewer.getSelection();
if (s.isEmpty()) {
return;
}
Object itemObject = s.getFirstElement();
if (!(itemObject instanceof TreeItem)) {
return;
}
m.add(a1);
m.add(a2);
}
});
viewer.getControl().setMenu(m.createContextMenu(viewer.getControl()));
return parent;
}
}