/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation 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:
* Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation
* (report 36180: Callers/Callees view)
*******************************************************************************/
package org.eclipse.jdt.internal.ui.callhierarchy;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper;
import org.eclipse.jdt.internal.ui.viewsupport.ColoringLabelProvider;
class CallHierarchyViewer extends TreeViewer {
private CallHierarchyViewPart fPart;
private CallHierarchyContentProvider fContentProvider;
/**
* @param parent the parent composite
* @param part the call hierarchy view part
*/
CallHierarchyViewer(Composite parent, CallHierarchyViewPart part) {
super(new Tree(parent, SWT.MULTI));
fPart = part;
getControl().setLayoutData(new GridData(GridData.FILL_BOTH));
setUseHashlookup(true);
setAutoExpandLevel(2);
fContentProvider = new CallHierarchyContentProvider(fPart);
setContentProvider(fContentProvider);
setLabelProvider(new ColoringLabelProvider(new CallHierarchyLabelProvider()));
clearViewer();
}
void setMethodWrappers(MethodWrapper[] wrappers) {
setInput(getTreeRoot(wrappers));
setFocus();
if (wrappers != null && wrappers.length > 0)
setSelection(new StructuredSelection(wrappers[0]), true);
}
CallHierarchyViewPart getPart() {
return fPart;
}
/**
*
*/
void setFocus() {
getControl().setFocus();
}
boolean isInFocus() {
return getControl().isFocusControl();
}
void addKeyListener(KeyListener keyListener) {
getControl().addKeyListener(keyListener);
}
/**
* Wraps the roots of a MethodWrapper tree in a dummy root in order to show
* it in the tree.
*
* @param roots The visible roots of the MethodWrapper tree.
* @return A new TreeRoot which is a dummy root above the specified root.
*/
private TreeRoot getTreeRoot(MethodWrapper[] roots) {
TreeRoot dummyRoot = new TreeRoot(roots);
return dummyRoot;
}
/**
* Attaches a context menu listener to the tree
* @param menuListener the menu listener
* @param viewSite the view site
* @param selectionProvider the selection provider
*/
void initContextMenu(IMenuListener menuListener, IWorkbenchPartSite viewSite, ISelectionProvider selectionProvider) {
MenuManager menuMgr= new MenuManager();
menuMgr.setRemoveAllWhenShown(true);
menuMgr.addMenuListener(menuListener);
Menu menu= menuMgr.createContextMenu(getTree());
getTree().setMenu(menu);
viewSite.registerContextMenu(menuMgr, selectionProvider);
}
void clearViewer() {
setInput(TreeRoot.EMPTY_ROOT);
}
void cancelJobs() {
if (fPart == null)
return;
fContentProvider.cancelJobs(fPart.getCurrentMethodWrappers());
}
}