/*******************************************************************************
 * Copyright (c) 2000, 2007 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.wst.jsdt.internal.ui.callhierarchy;

import java.util.Iterator;

import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.wst.jsdt.internal.corext.callhierarchy.CallLocation;
import org.eclipse.wst.jsdt.internal.corext.callhierarchy.MethodWrapper;
import org.eclipse.wst.jsdt.ui.actions.SelectionDispatchAction;

class OpenLocationAction extends SelectionDispatchAction {
    private CallHierarchyViewPart fPart;

    public OpenLocationAction(CallHierarchyViewPart part, IWorkbenchSite site) {
        super(site);
        fPart= part;
        setText(CallHierarchyMessages.OpenLocationAction_label); 
        setToolTipText(CallHierarchyMessages.OpenLocationAction_tooltip); 
    }

    private boolean checkEnabled(IStructuredSelection selection) {
        if (selection.isEmpty()) {
            return false;
        }

        for (Iterator iter = selection.iterator(); iter.hasNext();) {
            Object element = iter.next();

            if (element instanceof MethodWrapper) {
                continue;
            } else if (element instanceof CallLocation) {
                continue;
            }

            return false;
        }

        return true;
    }

    /* (non-Javadoc)
     * @see org.eclipse.wst.jsdt.ui.actions.SelectionDispatchAction#getSelection()
     */
    public ISelection getSelection() {
        return fPart.getSelection();
    }
    
    /* (non-Javadoc)
     * Method declared on SelectionDispatchAction.
     */
    public void run(IStructuredSelection selection) {
        if (!checkEnabled(selection)) {
            return;
        }
        for (Iterator iter= selection.iterator(); iter.hasNext();) {
	        boolean noError= CallHierarchyUI.openInEditor(iter.next(), getShell(), getDialogTitle());
	        if (! noError)
	        	return;
		}
    }

    private String getDialogTitle() {
        return CallHierarchyMessages.OpenLocationAction_error_title; 
    }
}