DebugStartupClass.java from BIRT at Krugle

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/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation .
 * 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:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/

package org.eclipse.birt.report.debug.internal.ui.launcher;

import org.eclipse.birt.report.debug.internal.ui.launcher.util.DebugUtil;
import org.eclipse.birt.report.debug.internal.ui.launcher.util.WorkspaceClassPathFinder;
import org.eclipse.birt.report.designer.ui.editors.ReportEditorProxy;
import org.eclipse.birt.report.designer.ui.preview.editors.ReportPreviewFormPage;
import org.eclipse.birt.report.viewer.utilities.WorkspaceClasspathManager;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.Path;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IStartup;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.forms.editor.FormEditor;
import org.eclipse.ui.ide.IDE;

import com.ibm.icu.util.StringTokenizer;

/**
 * Copy the seletion of the project in the debug lauch.The key name is
 * user.projectname.
 * 
 */
public class DebugStartupClass implements IStartup
{

	private static final String WORKSPACE_CLASSPATH_KEY = "workspace.projectclasspath";

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.IStartup#earlyStartup()
	 */
	public void earlyStartup( )
	{
		WorkspaceClassPathFinder finder = new WorkspaceClassPathFinder( );
		// Register a classpath finder class to the viewer
		WorkspaceClasspathManager.registerClassPathFinder( finder );

		// Set the classpath property (used in Java scripting)
		String projectClassPaths = finder.getClassPath( );

		// HashTable doesn't accept null value
		if ( projectClassPaths == null )
		{
			projectClassPaths = ""; //$NON-NLS-1$
		}
		System.setProperty( WORKSPACE_CLASSPATH_KEY, projectClassPaths );

		String value = System.getProperty( "user.projectname" ); //$NON-NLS-1$
		if ( value == null || value.length( ) == 0 )
		{
			return;
		}
		StringTokenizer token = new StringTokenizer( value, ";" ); //$NON-NLS-1$
		while ( token.hasMoreTokens( ) )
		{
			String str = token.nextToken( );
			try
			{
				DebugUtil.importProject( str );
			}
			catch ( Exception e1 )
			{
				// do nothing, the project has inport to the workspace1
				// e1.printStackTrace( );
			}
		}
		Display.getDefault( ).asyncExec( new Runnable( ) {

			public void run( )
			{
				int openCount = 0;
				try
				{
					String value = System.getProperty( "user.openfiles" ); //$NON-NLS-1$
					if ( value == null || value.length( ) == 0 )
					{
						return;
					}
					StringTokenizer token = new StringTokenizer( value, ";" ); //$NON-NLS-1$
					while ( token.hasMoreTokens( ) )
					{
						String str = token.nextToken( );
						final IFile file = ResourcesPlugin.getWorkspace( )
								.getRoot( )
								.getFile( new Path( str ) );

						IWorkbench workbench = PlatformUI.getWorkbench( );
						IWorkbenchWindow window = workbench.getActiveWorkbenchWindow( );
						IWorkbenchPage page = window.getActivePage( );
						IDE.openEditor( page, file, true );
						openCount++;
					}
				}
				catch ( PartInitException e )
				{

					// Do nothing
				}
				if (openCount == 1)
				{
					FormEditor editor = getActiveReportEditor();
					editor.setActivePage(ReportPreviewFormPage.ID);
				}
				
			}

		} );

	}
	
	/**Returns the current active report editor in current active page or
	 * current active workbench.
	 * @return
	 */
	public static FormEditor getActiveReportEditor() 
	{
		IWorkbenchWindow window = PlatformUI.getWorkbench()
				.getActiveWorkbenchWindow();

		if (window != null) {

			IWorkbenchPage pg = window.getActivePage();

			if (pg != null) {
				IEditorPart editor = pg.getActiveEditor();

				if (editor != null) {
					if (editor instanceof ReportEditorProxy) {
						IEditorPart part = ((ReportEditorProxy) editor)
								.getEditorPart();
						if (part instanceof FormEditor) {
							return (FormEditor) part;
						}
					} else if (editor instanceof FormEditor) {
						return (FormEditor) editor;
					}
				}

			}
		}
		return null;

	}
}
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