AbstractActionOnIProjects.java

/* ====================================================================
 * 
 * The ObjectStyle Group Software License, Version 1.0 
 *
 * Copyright (c) 2002, 2004 The ObjectStyle Group 
 * and individual authors of the software.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    distribution.
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 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        ObjectStyle Group (http://objectstyle.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
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 *    must not be used to endorse or promote products derived
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package org.objectstyle.wolips.workbenchutilities.actions;

import java.util.ArrayList;
import java.util.Iterator;

import org.eclipse.core.resources.IProject;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;

/**
 * @author uli
 * 
 * The superclass for all Actions
 */
public abstract class AbstractActionOnIProjects implements IObjectActionDelegate {
	private IProject[] projects;

	protected IWorkbenchPart part;

	/**
	 * 
	 */
	public AbstractActionOnIProjects() {
		super();
	}

	/**
	 * @return Returns the IProject
	 */
	protected IProject[] getIProjects() {
		return this.projects;
	}

	/**
	 * Method dispose.
	 */
	public void dispose() {
		this.part = null;
		this.projects = null;
	}

	/**
	 * Has to be implemented in the subclass.
	 */
	public abstract void run(IAction action);

	/**
	 * Resets the project when the selection is changed.
	 */
	public void selectionChanged(IAction action, ISelection selection) {
		IStructuredSelection structuredSelection = (IStructuredSelection) selection;
		this.projects = null;
		ArrayList<IProject> arrayList = new ArrayList<IProject>();
		Iterator iterator = structuredSelection.iterator();
		while (iterator.hasNext()) {
			Object obj = iterator.next();
			if (obj != null && obj instanceof IProject)
				arrayList.add((IProject)obj);
			if (obj != null && obj instanceof IJavaProject)
				arrayList.add(((IJavaProject) obj).getProject());
		}
		this.projects = arrayList.toArray(new IProject[arrayList.size()]);
	}

	/**
	 * (non-Javadoc) Method declared on IObjectActionDelegate
	 */
	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
		this.part = targetPart;
	}
}