/*******************************************************************************
* Copyright (c) 2000, 2017 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
*
*******************************************************************************/
package org.eclipse.dltk.internal.ui.callhierarchy;
import org.eclipse.dltk.core.DLTKCore;
import org.eclipse.dltk.core.IMethod;
import org.eclipse.dltk.core.IModelElement;
import org.eclipse.dltk.internal.corext.callhierarchy.MethodWrapper;
import org.eclipse.dltk.internal.corext.util.Messages;
import org.eclipse.dltk.internal.ui.util.SelectionUtil;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
class FocusOnSelectionAction extends Action {
private CallHierarchyViewPart fPart;
public FocusOnSelectionAction(CallHierarchyViewPart part) {
super(CallHierarchyMessages.FocusOnSelectionAction_focusOnSelection_text);
fPart= part;
setDescription(CallHierarchyMessages.FocusOnSelectionAction_focusOnSelection_description);
setToolTipText(CallHierarchyMessages.FocusOnSelectionAction_focusOnSelection_tooltip);
// PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CALL_HIERARCHY_FOCUS_ON_SELECTION_ACTION);
if (DLTKCore.DEBUG) {
System.err.println("Add help support here..."); //$NON-NLS-1$
}
}
public boolean canActionBeAdded() {
Object element = SelectionUtil.getSingleElement(getSelection());
IMethod method = getSelectedMethod(element);
if (method != null) {
setText(Messages.format(CallHierarchyMessages.FocusOnSelectionAction_focusOn_text, method.getElementName()));
return true;
}
return false;
}
private IMethod getSelectedMethod(Object element) {
IMethod method = null;
if (element instanceof IMethod) {
method= (IMethod) element;
} else if (element instanceof MethodWrapper) {
IModelElement member= ((MethodWrapper) element).getMember();
if (member.getElementType() == IModelElement.METHOD) {
method= (IMethod) member;
}
}
return method;
}
@Override
public void run() {
Object element = SelectionUtil.getSingleElement(getSelection());
IMethod method= getSelectedMethod(element);
if (method != null) {
fPart.setMethod(method);
}
}
private ISelection getSelection() {
ISelectionProvider provider = fPart.getSite().getSelectionProvider();
if (provider != null) {
return provider.getSelection();
}
return null;
}
}