org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/actions/AddExternalJarAction.java

package org.eclipse.jdt.internal.debug.ui.actions;

/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */

import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.internal.debug.ui.launcher.RuntimeClasspathViewer;
import org.eclipse.jdt.launching.IRuntimeClasspathEntry;
import org.eclipse.jdt.launching.JavaRuntime;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.FileDialog;

/**
 * Adds an external jar to the runtime class path.
 */
public class AddExternalJarAction extends OpenDialogAction {

	public AddExternalJarAction(RuntimeClasspathViewer viewer, String dialogSettingsPrefix) {
		super(ActionMessages.getString("AddExternalJar.Add_E&xternal_JARs_1"), viewer, dialogSettingsPrefix); //$NON-NLS-1$
	}	

	/**
	 * Prompts for a project to add.
	 * 
	 * @see IAction#run()
	 */	
	public void run() {
							
		String lastUsedPath= getDialogSetting(LAST_PATH_SETTING);
		if (lastUsedPath == null) {
			lastUsedPath= ""; //$NON-NLS-1$
		}
		FileDialog dialog= new FileDialog(getShell(), SWT.MULTI);
		dialog.setText(ActionMessages.getString("AddExternalJar.Jar_Selection_3")); //$NON-NLS-1$
		dialog.setFilterExtensions(new String[] {"*.jar;*.zip"}); //$NON-NLS-1$
		dialog.setFilterPath(lastUsedPath);
		String res= dialog.open();
		if (res == null) {
			return;
		}
		String[] fileNames= dialog.getFileNames();
		int nChosen= fileNames.length;
			
		IPath filterPath= new Path(dialog.getFilterPath());
		IRuntimeClasspathEntry[] elems= new IRuntimeClasspathEntry[nChosen];
		for (int i= 0; i < nChosen; i++) {
			IPath path= filterPath.append(fileNames[i]).makeAbsolute();	
			elems[i]= JavaRuntime.newArchiveRuntimeClasspathEntry(path);
		}
		setDialogSetting(LAST_PATH_SETTING, filterPath.toOSString());
		
		getViewer().addEntries(elems);
	}

	/**
	 * @see SelectionListenerAction#updateSelection(IStructuredSelection)
	 */
	protected boolean updateSelection(IStructuredSelection selection) {
		return getViewer().isEnabled();
	}
	
}