ant/org.eclipse.ant.tests.ui/EclipseCon/org/eclipse/ant/internal/ui/demo/ExternalAntBuildfileImportPage.java - platform/eclipse.platform - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ant.internal.ui.demo;

 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.UnsupportedEncodingException;
 import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;

 import org.apache.tools.ant.Task;
 import org.apache.tools.ant.UnknownElement;
 import org.apache.tools.ant.taskdefs.Javac;
 import org.eclipse.ant.internal.ui.editor.model.AntElementNode;
 import org.eclipse.ant.internal.ui.editor.model.AntProjectNode;
 import org.eclipse.ant.internal.ui.editor.model.AntTargetNode;
 import org.eclipse.ant.internal.ui.editor.model.AntTaskNode;
 import org.eclipse.ant.internal.ui.editor.outline.AntModel;
 import org.eclipse.ant.internal.ui.editor.outline.LocationProvider;
 import org.eclipse.ant.internal.ui.editor.outline.XMLCore;
 import org.eclipse.ant.internal.ui.model.AntUIPlugin;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jface.dialogs.ErrorDialog;
 import org.eclipse.jface.text.Document;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jface.wizard.WizardPage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Event;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Listener;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.actions.WorkspaceModifyOperation;
 import org.eclipse.ui.dialogs.IOverwriteQuery;
 import org.eclipse.ui.help.WorkbenchHelp;
 import org.eclipse.ui.internal.ide.IHelpContextIds;
 import org.eclipse.ui.wizards.datatransfer.FileSystemStructureProvider;
 import org.eclipse.ui.wizards.datatransfer.IImportStructureProvider;
 import org.eclipse.ui.wizards.datatransfer.ImportOperation;

 public class ExternalAntBuildfileImportPage extends WizardPage {

 	private static class ImportOverwriteQuery implements IOverwriteQuery {
 		public String queryOverwrite(String file) {
 			return ALL;
 		}
 	}

 	//private static String previouslyBrowsedDirectory = ""; //$NON-NLS-1$

 	private Text projectNameField;
 	private Text locationPathField;
 	private Button browseButton;

 	private AntModel fAntModel;

 	private Listener locationModifyListener = new Listener() {
 		public void handleEvent(Event e) {
 			fAntModel= getAntModel(getBuildFile(getProjectLocationFieldValue()));
 			setProjectName();
 			setPageComplete(validatePage());
 		}
 	};

 	private Listener nameModifyListener = new Listener() {
 		public void handleEvent(Event e) {
 			setPageComplete(validatePage());
 		}
 	};

 	private static final int SIZING_TEXT_FIELD_WIDTH = 250;

 	public ExternalAntBuildfileImportPage() {
 		super("externalAntBuildfilePage"); //$NON-NLS-1$
 		setPageComplete(false);
 		setTitle("Import a Project from an Ant Buildfile");
 		setDescription("Creates a new project based on the specification in the javac task of the Ant buildfile. This does not copy the source contents to the workspace.");

 	}
 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
 	 */
 	public void createControl(Composite parent) {

 		initializeDialogUnits(parent);

 		Composite composite = new Composite(parent, SWT.NULL);

 		WorkbenchHelp.setHelp(composite, IHelpContextIds.NEW_PROJECT_WIZARD_PAGE);

 		composite.setLayout(new GridLayout());
 		composite.setLayoutData(new GridData(GridData.FILL_BOTH));
 		composite.setFont(parent.getFont());

 		createProjectNameGroup(composite);
 		createProjectLocationGroup(composite);
 		validatePage();
 		// Show description on opening
 		setErrorMessage(null);
 		setMessage(null);
 		setControl(composite);
 	}

 	/**
 	 * Creates the project location specification controls.
 	 *
 	 * @param parent the parent composite
 	 */
 	private final void createProjectLocationGroup(Composite parent) {

 		// project specification group
 		Composite projectGroup = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 3;
 		projectGroup.setLayout(layout);
 		projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		projectGroup.setFont(parent.getFont());

 		// new project label
 		Label projectContentsLabel = new Label(projectGroup, SWT.NONE);
 		projectContentsLabel.setText("&Ant Buildfile:");
 		projectContentsLabel.setFont(parent.getFont());

 		createUserSpecifiedProjectLocationGroup(projectGroup);
 	}
 	/**
 	 * Creates the project name specification controls.
 	 *
 	 * @param parent the parent composite
 	 */
 	private final void createProjectNameGroup(Composite parent) {

 		Font dialogFont = parent.getFont();

 		// project specification group
 		Composite projectGroup = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		projectGroup.setFont(dialogFont);
 		projectGroup.setLayout(layout);
 		projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		// new project label
 		Label projectLabel = new Label(projectGroup, SWT.NONE);
 		projectLabel.setText("&Project Name:");
 		projectLabel.setFont(dialogFont);

 		// new project name entry field
 		projectNameField = new Text(projectGroup, SWT.BORDER);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.widthHint = SIZING_TEXT_FIELD_WIDTH;
 		projectNameField.setLayoutData(data);
 		projectNameField.setFont(dialogFont);

 		projectNameField.addListener(SWT.Modify, nameModifyListener);
 	}
 	/**
 	 * Creates the project location specification controls.
 	 *
 	 * @param projectGroup the parent composite
 	 * @param boolean - the initial enabled state of the widgets created
 	 */
 	private void createUserSpecifiedProjectLocationGroup(Composite projectGroup) {

 		Font dialogFont = projectGroup.getFont();

 		// project location entry field
 		this.locationPathField = new Text(projectGroup, SWT.BORDER);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.widthHint = SIZING_TEXT_FIELD_WIDTH;
 		this.locationPathField.setLayoutData(data);
 		this.locationPathField.setFont(dialogFont);

 		// browse button
 		this.browseButton = new Button(projectGroup, SWT.PUSH);
 		this.browseButton.setText("B&rowse...");
 		this.browseButton.setFont(dialogFont);
 		setButtonLayoutData(this.browseButton);

 		this.browseButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent event) {
 				handleBrowseButtonPressed();
 			}
 		});

 		locationPathField.addListener(SWT.Modify, locationModifyListener);
 	}

 	/**
 	 * Returns the current project name as entered by the user, or its anticipated
 	 * initial value.
 	 *
 	 * @return the project name, its anticipated initial value, or <code>null</code>
 	 *   if no project name is known
 	 */
 	private String getProjectName(AntProjectNode projectNode) {
 		String userSpecifiedName= getProjectNameFieldValue();
 		if (userSpecifiedName.length() > 0) {
 			return userSpecifiedName;
 		}
 		String projectName= projectNode.getLabel();
 		if (projectName == null) {
 			projectName= "Ant Project";
 		}
 		return projectName;
 	}
 	/**
 	 * Returns the value of the project name field
 	 * with leading and trailing spaces removed.
 	 *
 	 * @return the project name in the field
 	 */
 	private String getProjectNameFieldValue() {
 		if (projectNameField == null) {
 			return ""; //$NON-NLS-1$
 		} else {
 			return projectNameField.getText().trim();
 		}
 	}
 	/**
 	 * Returns the value of the project location field
 	 * with leading and trailing spaces removed.
 	 *
 	 * @return the project location directory in the field
 	 */
 	private String getProjectLocationFieldValue() {
 		return locationPathField.getText().trim();
 	}

 	/**
 	 * Determine the buildfile the user wishes to operate from
 	 */
 	private void handleBrowseButtonPressed() {

 			String lastUsedPath= null;
 			//lastUsedPath= dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTEXTFILE);
 			if (lastUsedPath == null) {
 				lastUsedPath= ""; //$NON-NLS-1$
 			}
 			FileDialog dialog = new FileDialog(getShell(), SWT.SINGLE);
 			dialog.setFilterExtensions(new String[] { "*.xml" }); //$NON-NLS-1$;
 			dialog.setFilterPath(lastUsedPath);

 			String result = dialog.open();
 			if (result == null) {
 				return;
 			}
 			IPath filterPath= new Path(dialog.getFilterPath());
 			String buildFileName= dialog.getFileName();
 			IPath path= filterPath.append(buildFileName).makeAbsolute();

 //			previouslyBrowsedDirectory = selectedDirectory;
 			locationPathField.setText(path.toOSString());
 	}

 	/**
 	 * Returns whether this page's controls currently all contain valid
 	 * values.
 	 *
 	 * @return <code>true</code> if all controls are valid, and
 	 *   <code>false</code> if at least one is invalid
 	 */
 	private boolean validatePage() {

 		String locationFieldContents = getProjectLocationFieldValue();

 		if (locationFieldContents.equals("")) { //$NON-NLS-1$
 			setErrorMessage(null);
 			setMessage("No buildfile selected");
 			return false;
 		}

 		IPath path = new Path(""); //$NON-NLS-1$
 		if (!path.isValidPath(locationFieldContents)) {
 			setErrorMessage("Location error");
 			return false;
 		}

 		if (fAntModel == null) {
 			setErrorMessage("Specified buildfile could not be parsed successfully");
 			return false;
 		}

 		if (getProjectNameFieldValue().length() == 0) {
 			setErrorMessage("Project name must be specified");
 			return false;
 		} else {
 			IProject existingProject= ResourcesPlugin.getWorkspace().getRoot().getProject(getProjectNameFieldValue());
 			if (existingProject.exists()) {
 				setErrorMessage("A project with the specified name already exists");
 				return false;
 			}
 		}

 		setErrorMessage(null);
 		setMessage(null);
 		return true;
 	}

 	/**
 	 * Set the project name using either the name of the
 	 * parent of the file or the name entry in the xml for
 	 * the file
 	 */
 	private void setProjectName() {

 		if (fAntModel == null) {
 			return;
 		}

 		AntProjectNode node= fAntModel.getProjectNode();
 		String projectName= getProjectName(node);

 		projectNameField.setText(projectName);
 	}

 	/**
 	 * Return a .xml file from the specified location.
 	 * If there isn't one return null.
 	 */
 	private File getBuildFile(String locationFieldContents) {
 		File buildFile = new File(locationFieldContents);
 		if (!buildFile.isFile() && buildFile.exists()) {
 			return null;
 		}

 		return buildFile;
 	}

 	/**
 	 * Creates a new project resource based on the Ant buildfile.
 	 *
 	 * @return the created project resource, or <code>null</code> if the project
 	 *    was not created
 	 */
 	protected IJavaProject createProject() {

 		AntProjectNode projectNode= fAntModel.getProjectNode();

 		final List javacNodes= new ArrayList();
 		getJavacNodes(javacNodes, projectNode);
 		final IJavaProject[] result= new IJavaProject[1];
 		final String projectName= getProjectNameFieldValue();
 		final File buildFile= getBuildFile(getProjectLocationFieldValue());
 		if (javacNodes.size() > 1) {
 			setErrorMessage("Currently only supports creating a project from a single javac declaration");
 			return null;
 		}

 		WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
 			protected void execute(IProgressMonitor monitor) throws CoreException {
 				List javacTasks= resolveJavacTasks(javacNodes);
 				//TODO no javactasks...throw CoreException
 				ProjectCreator creator= new ProjectCreator();
 				Iterator iter= javacTasks.iterator();
 				while (iter.hasNext()) {
 					Javac javacTask = (Javac) iter.next();
 					IJavaProject javaProject= creator.createJavaProjectFromJavacNode(projectName, javacTask);
 					importBuildFile(monitor, javaProject.getPath(), buildFile);
 					result[0]= javaProject;
 				}
 			}
 		};

 		//run the new project creation operation
 		try {
 			getContainer().run(true, true, op);
 		} catch (InterruptedException e) {
 			return null;
 		} catch (InvocationTargetException e) {
 			// ie.- one of the steps resulted in a core exception
 			Throwable t = e.getTargetException();
 			if (t instanceof CoreException) {
 				ErrorDialog.openError(getShell(), "Error occurred creating project",
 				null, ((CoreException) t).getStatus());
 			}
 		}

 		return result[0];
 	}

 	protected void importBuildFile(IProgressMonitor monitor, IPath destPath, File buildFile) {
 		IImportStructureProvider structureProvider = FileSystemStructureProvider.INSTANCE;
 		List files = new ArrayList(1);

 		files.add(buildFile);
 		File rootDir= buildFile.getParentFile();
 		try {
 			ImportOperation op= new ImportOperation(destPath, rootDir, structureProvider, new ImportOverwriteQuery(), files);
 			op.setCreateContainerStructure(false);
 			op.run(monitor);
 		} catch (InterruptedException e) {
 			// should not happen
 		} catch (InvocationTargetException e) {
 			Throwable t = e.getTargetException();
 			if (t instanceof CoreException) {
 				ErrorDialog.openError(getShell(), "Error occurred importing buildfile",
 				null, ((CoreException) t).getStatus());
 			}
 		}
 	}

 	private List resolveJavacTasks(List javacNodes) {
 		List resolvedJavacTasks= new ArrayList(javacNodes.size());
 		Iterator nodes= javacNodes.iterator();
 		while (nodes.hasNext()) {
 			AntTaskNode taskNode = (AntTaskNode) nodes.next();
 			Task javacTask= taskNode.getTask();
 			if (javacTask instanceof UnknownElement) {
 				if (((UnknownElement)javacTask).getRealThing() == null) {
 					javacTask.maybeConfigure();
 				}

 				resolvedJavacTasks.add(((UnknownElement)javacTask).getRealThing());
 			} else {
 				resolvedJavacTasks.add(javacTask);
 			}

 		}
 		return resolvedJavacTasks;
 	}

 	private AntModel getAntModel(final File buildFile) {
 		IDocument doc= getDocument(buildFile);
 		if (doc == null) {
 			return null;
 		}
 		AntModel model= new AntModel(XMLCore.getDefault(), doc, null, new LocationProvider(null) {
 			/* (non-Javadoc)
 			 * @see org.eclipse.ant.internal.ui.editor.outline.ILocationProvider#getLocation()
 			 */
 			public IPath getLocation() {
 				return new Path(buildFile.getAbsolutePath());
 			}
 		});
 		model.reconcile(null);
 		return model;
 	}

 	private IDocument getDocument(File buildFile) {
 		InputStream in;
 		try {
 			in = new FileInputStream(buildFile);
 		} catch (FileNotFoundException e) {
 			return null;
 		}
 		String initialContent= getStreamContentAsString(in);
 		return new Document(initialContent);
 	}

 	private String getStreamContentAsString(InputStream inputStream) {
 		InputStreamReader reader;
 		try {
 			reader = new InputStreamReader(inputStream, ResourcesPlugin.getEncoding());
 		} catch (UnsupportedEncodingException e) {
 			AntUIPlugin.log(e);
 			return ""; //$NON-NLS-1$
 		}

 		return getReaderContentAsString( new BufferedReader(reader));
 	}

 	private String getReaderContentAsString(BufferedReader bufferedReader) {
 		StringBuffer result = new StringBuffer();
 		try {
 			String line= bufferedReader.readLine();

 			while(line != null) {
 				if(result.length() != 0) {
 					result.append("\n"); //$NON-NLS-1$
 				}
 				result.append(line);
 				line = bufferedReader.readLine();
 			}
 		} catch (IOException e) {
 			AntUIPlugin.log(e);
 			return null;
 		}

 		return result.toString();
 	}

 	private void getJavacNodes(List javacNodes, AntElementNode parent) {
 		if (!parent.hasChildren()) {
 			return;
 		}
 		List children= parent.getChildNodes();
 		for (Iterator iter = children.iterator(); iter.hasNext();) {
 			AntElementNode node = (AntElementNode) iter.next();
 			if (node instanceof AntTargetNode) {
 				getJavacNodes(javacNodes, node);
 			} else if (node instanceof AntTaskNode) {
 				AntTaskNode task= (AntTaskNode)node;
 				if (task.getName() == "javac") { //$NON-NLS-1$
 					javacNodes.add(task);
 				}
 			}
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.IDialogPage#setVisible(boolean)
 	 */
 	public void setVisible(boolean visible) {
 		super.setVisible(visible);
 		if(visible)
 			this.locationPathField.setFocus();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2004 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.ant.internal.ui.demo;

	import java.io.BufferedReader;
	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileNotFoundException;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	import java.io.UnsupportedEncodingException;
	import java.lang.reflect.InvocationTargetException;
	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;

	import org.apache.tools.ant.Task;
	import org.apache.tools.ant.UnknownElement;
	import org.apache.tools.ant.taskdefs.Javac;
	import org.eclipse.ant.internal.ui.editor.model.AntElementNode;
	import org.eclipse.ant.internal.ui.editor.model.AntProjectNode;
	import org.eclipse.ant.internal.ui.editor.model.AntTargetNode;
	import org.eclipse.ant.internal.ui.editor.model.AntTaskNode;
	import org.eclipse.ant.internal.ui.editor.outline.AntModel;
	import org.eclipse.ant.internal.ui.editor.outline.LocationProvider;
	import org.eclipse.ant.internal.ui.editor.outline.XMLCore;
	import org.eclipse.ant.internal.ui.model.AntUIPlugin;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.jdt.core.IJavaProject;
	import org.eclipse.jface.dialogs.ErrorDialog;
	import org.eclipse.jface.text.Document;
	import org.eclipse.jface.text.IDocument;
	import org.eclipse.jface.wizard.WizardPage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Event;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Listener;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.actions.WorkspaceModifyOperation;
	import org.eclipse.ui.dialogs.IOverwriteQuery;
	import org.eclipse.ui.help.WorkbenchHelp;
	import org.eclipse.ui.internal.ide.IHelpContextIds;
	import org.eclipse.ui.wizards.datatransfer.FileSystemStructureProvider;
	import org.eclipse.ui.wizards.datatransfer.IImportStructureProvider;
	import org.eclipse.ui.wizards.datatransfer.ImportOperation;

	public class ExternalAntBuildfileImportPage extends WizardPage {

	private static class ImportOverwriteQuery implements IOverwriteQuery {
	public String queryOverwrite(String file) {
	return ALL;
	}
	}

	//private static String previouslyBrowsedDirectory = ""; //$NON-NLS-1$

	private Text projectNameField;
	private Text locationPathField;
	private Button browseButton;

	private AntModel fAntModel;

	private Listener locationModifyListener = new Listener() {
	public void handleEvent(Event e) {
	fAntModel= getAntModel(getBuildFile(getProjectLocationFieldValue()));
	setProjectName();
	setPageComplete(validatePage());
	}
	};

	private Listener nameModifyListener = new Listener() {
	public void handleEvent(Event e) {
	setPageComplete(validatePage());
	}
	};

	private static final int SIZING_TEXT_FIELD_WIDTH = 250;

	public ExternalAntBuildfileImportPage() {
	super("externalAntBuildfilePage"); //$NON-NLS-1$
	setPageComplete(false);
	setTitle("Import a Project from an Ant Buildfile");
	setDescription("Creates a new project based on the specification in the javac task of the Ant buildfile. This does not copy the source contents to the workspace.");

	}
	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
	*/
	public void createControl(Composite parent) {

	initializeDialogUnits(parent);

	Composite composite = new Composite(parent, SWT.NULL);

	WorkbenchHelp.setHelp(composite, IHelpContextIds.NEW_PROJECT_WIZARD_PAGE);

	composite.setLayout(new GridLayout());
	composite.setLayoutData(new GridData(GridData.FILL_BOTH));
	composite.setFont(parent.getFont());

	createProjectNameGroup(composite);
	createProjectLocationGroup(composite);
	validatePage();
	// Show description on opening
	setErrorMessage(null);
	setMessage(null);
	setControl(composite);
	}

	/**
	* Creates the project location specification controls.
	*
	* @param parent the parent composite
	*/
	private final void createProjectLocationGroup(Composite parent) {

	// project specification group
	Composite projectGroup = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 3;
	projectGroup.setLayout(layout);
	projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	projectGroup.setFont(parent.getFont());

	// new project label
	Label projectContentsLabel = new Label(projectGroup, SWT.NONE);
	projectContentsLabel.setText("&Ant Buildfile:");
	projectContentsLabel.setFont(parent.getFont());

	createUserSpecifiedProjectLocationGroup(projectGroup);
	}
	/**
	* Creates the project name specification controls.
	*
	* @param parent the parent composite
	*/
	private final void createProjectNameGroup(Composite parent) {

	Font dialogFont = parent.getFont();

	// project specification group
	Composite projectGroup = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	projectGroup.setFont(dialogFont);
	projectGroup.setLayout(layout);
	projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	// new project label
	Label projectLabel = new Label(projectGroup, SWT.NONE);
	projectLabel.setText("&Project Name:");
	projectLabel.setFont(dialogFont);

	// new project name entry field
	projectNameField = new Text(projectGroup, SWT.BORDER);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.widthHint = SIZING_TEXT_FIELD_WIDTH;
	projectNameField.setLayoutData(data);
	projectNameField.setFont(dialogFont);

	projectNameField.addListener(SWT.Modify, nameModifyListener);
	}
	/**
	* Creates the project location specification controls.
	*
	* @param projectGroup the parent composite
	* @param boolean - the initial enabled state of the widgets created
	*/
	private void createUserSpecifiedProjectLocationGroup(Composite projectGroup) {

	Font dialogFont = projectGroup.getFont();

	// project location entry field
	this.locationPathField = new Text(projectGroup, SWT.BORDER);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.widthHint = SIZING_TEXT_FIELD_WIDTH;
	this.locationPathField.setLayoutData(data);
	this.locationPathField.setFont(dialogFont);

	// browse button
	this.browseButton = new Button(projectGroup, SWT.PUSH);
	this.browseButton.setText("B&rowse...");
	this.browseButton.setFont(dialogFont);
	setButtonLayoutData(this.browseButton);

	this.browseButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent event) {
	handleBrowseButtonPressed();
	}
	});

	locationPathField.addListener(SWT.Modify, locationModifyListener);
	}

	/**
	* Returns the current project name as entered by the user, or its anticipated
	* initial value.
	*
	* @return the project name, its anticipated initial value, or <code>null</code>
	* if no project name is known
	*/
	private String getProjectName(AntProjectNode projectNode) {
	String userSpecifiedName= getProjectNameFieldValue();
	if (userSpecifiedName.length() > 0) {
	return userSpecifiedName;
	}
	String projectName= projectNode.getLabel();
	if (projectName == null) {
	projectName= "Ant Project";
	}
	return projectName;
	}
	/**
	* Returns the value of the project name field
	* with leading and trailing spaces removed.
	*
	* @return the project name in the field
	*/
	private String getProjectNameFieldValue() {
	if (projectNameField == null) {
	return ""; //$NON-NLS-1$
	} else {
	return projectNameField.getText().trim();
	}
	}
	/**
	* Returns the value of the project location field
	* with leading and trailing spaces removed.
	*
	* @return the project location directory in the field
	*/
	private String getProjectLocationFieldValue() {
	return locationPathField.getText().trim();
	}

	/**
	* Determine the buildfile the user wishes to operate from
	*/
	private void handleBrowseButtonPressed() {

	String lastUsedPath= null;
	//lastUsedPath= dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTEXTFILE);
	if (lastUsedPath == null) {
	lastUsedPath= ""; //$NON-NLS-1$
	}
	FileDialog dialog = new FileDialog(getShell(), SWT.SINGLE);
	dialog.setFilterExtensions(new String[] { "*.xml" }); //$NON-NLS-1$;
	dialog.setFilterPath(lastUsedPath);

	String result = dialog.open();
	if (result == null) {
	return;
	}
	IPath filterPath= new Path(dialog.getFilterPath());
	String buildFileName= dialog.getFileName();
	IPath path= filterPath.append(buildFileName).makeAbsolute();

	// previouslyBrowsedDirectory = selectedDirectory;
	locationPathField.setText(path.toOSString());
	}

	/**
	* Returns whether this page's controls currently all contain valid
	* values.
	*
	* @return <code>true</code> if all controls are valid, and
	* <code>false</code> if at least one is invalid
	*/
	private boolean validatePage() {

	String locationFieldContents = getProjectLocationFieldValue();

	if (locationFieldContents.equals("")) { //$NON-NLS-1$
	setErrorMessage(null);
	setMessage("No buildfile selected");
	return false;
	}

	IPath path = new Path(""); //$NON-NLS-1$
	if (!path.isValidPath(locationFieldContents)) {
	setErrorMessage("Location error");
	return false;
	}

	if (fAntModel == null) {
	setErrorMessage("Specified buildfile could not be parsed successfully");
	return false;
	}

	if (getProjectNameFieldValue().length() == 0) {
	setErrorMessage("Project name must be specified");
	return false;
	} else {
	IProject existingProject= ResourcesPlugin.getWorkspace().getRoot().getProject(getProjectNameFieldValue());
	if (existingProject.exists()) {
	setErrorMessage("A project with the specified name already exists");
	return false;
	}
	}

	setErrorMessage(null);
	setMessage(null);
	return true;
	}

	/**
	* Set the project name using either the name of the
	* parent of the file or the name entry in the xml for
	* the file
	*/
	private void setProjectName() {

	if (fAntModel == null) {
	return;
	}

	AntProjectNode node= fAntModel.getProjectNode();
	String projectName= getProjectName(node);

	projectNameField.setText(projectName);
	}

	/**
	* Return a .xml file from the specified location.
	* If there isn't one return null.
	*/
	private File getBuildFile(String locationFieldContents) {
	File buildFile = new File(locationFieldContents);
	if (!buildFile.isFile() && buildFile.exists()) {
	return null;
	}

	return buildFile;
	}

	/**
	* Creates a new project resource based on the Ant buildfile.
	*
	* @return the created project resource, or <code>null</code> if the project
	* was not created
	*/
	protected IJavaProject createProject() {

	AntProjectNode projectNode= fAntModel.getProjectNode();

	final List javacNodes= new ArrayList();
	getJavacNodes(javacNodes, projectNode);
	final IJavaProject[] result= new IJavaProject[1];
	final String projectName= getProjectNameFieldValue();
	final File buildFile= getBuildFile(getProjectLocationFieldValue());
	if (javacNodes.size() > 1) {
	setErrorMessage("Currently only supports creating a project from a single javac declaration");
	return null;
	}

	WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
	protected void execute(IProgressMonitor monitor) throws CoreException {
	List javacTasks= resolveJavacTasks(javacNodes);
	//TODO no javactasks...throw CoreException
	ProjectCreator creator= new ProjectCreator();
	Iterator iter= javacTasks.iterator();
	while (iter.hasNext()) {
	Javac javacTask = (Javac) iter.next();
	IJavaProject javaProject= creator.createJavaProjectFromJavacNode(projectName, javacTask);
	importBuildFile(monitor, javaProject.getPath(), buildFile);
	result[0]= javaProject;
	}
	}
	};

	//run the new project creation operation
	try {
	getContainer().run(true, true, op);
	} catch (InterruptedException e) {
	return null;
	} catch (InvocationTargetException e) {
	// ie.- one of the steps resulted in a core exception
	Throwable t = e.getTargetException();
	if (t instanceof CoreException) {
	ErrorDialog.openError(getShell(), "Error occurred creating project",
	null, ((CoreException) t).getStatus());
	}
	}

	return result[0];
	}

	protected void importBuildFile(IProgressMonitor monitor, IPath destPath, File buildFile) {
	IImportStructureProvider structureProvider = FileSystemStructureProvider.INSTANCE;
	List files = new ArrayList(1);

	files.add(buildFile);
	File rootDir= buildFile.getParentFile();
	try {
	ImportOperation op= new ImportOperation(destPath, rootDir, structureProvider, new ImportOverwriteQuery(), files);
	op.setCreateContainerStructure(false);
	op.run(monitor);
	} catch (InterruptedException e) {
	// should not happen
	} catch (InvocationTargetException e) {
	Throwable t = e.getTargetException();
	if (t instanceof CoreException) {
	ErrorDialog.openError(getShell(), "Error occurred importing buildfile",
	null, ((CoreException) t).getStatus());
	}
	}
	}

	private List resolveJavacTasks(List javacNodes) {
	List resolvedJavacTasks= new ArrayList(javacNodes.size());
	Iterator nodes= javacNodes.iterator();
	while (nodes.hasNext()) {
	AntTaskNode taskNode = (AntTaskNode) nodes.next();
	Task javacTask= taskNode.getTask();
	if (javacTask instanceof UnknownElement) {
	if (((UnknownElement)javacTask).getRealThing() == null) {
	javacTask.maybeConfigure();
	}

	resolvedJavacTasks.add(((UnknownElement)javacTask).getRealThing());
	} else {
	resolvedJavacTasks.add(javacTask);
	}

	}
	return resolvedJavacTasks;
	}

	private AntModel getAntModel(final File buildFile) {
	IDocument doc= getDocument(buildFile);
	if (doc == null) {
	return null;
	}
	AntModel model= new AntModel(XMLCore.getDefault(), doc, null, new LocationProvider(null) {
	/* (non-Javadoc)
	* @see org.eclipse.ant.internal.ui.editor.outline.ILocationProvider#getLocation()
	*/
	public IPath getLocation() {
	return new Path(buildFile.getAbsolutePath());
	}
	});
	model.reconcile(null);
	return model;
	}

	private IDocument getDocument(File buildFile) {
	InputStream in;
	try {
	in = new FileInputStream(buildFile);
	} catch (FileNotFoundException e) {
	return null;
	}
	String initialContent= getStreamContentAsString(in);
	return new Document(initialContent);
	}

	private String getStreamContentAsString(InputStream inputStream) {
	InputStreamReader reader;
	try {
	reader = new InputStreamReader(inputStream, ResourcesPlugin.getEncoding());
	} catch (UnsupportedEncodingException e) {
	AntUIPlugin.log(e);
	return ""; //$NON-NLS-1$
	}

	return getReaderContentAsString( new BufferedReader(reader));
	}

	private String getReaderContentAsString(BufferedReader bufferedReader) {
	StringBuffer result = new StringBuffer();
	try {
	String line= bufferedReader.readLine();

	while(line != null) {
	if(result.length() != 0) {
	result.append("\n"); //$NON-NLS-1$
	}
	result.append(line);
	line = bufferedReader.readLine();
	}
	} catch (IOException e) {
	AntUIPlugin.log(e);
	return null;
	}

	return result.toString();
	}

	private void getJavacNodes(List javacNodes, AntElementNode parent) {
	if (!parent.hasChildren()) {
	return;
	}
	List children= parent.getChildNodes();
	for (Iterator iter = children.iterator(); iter.hasNext();) {
	AntElementNode node = (AntElementNode) iter.next();
	if (node instanceof AntTargetNode) {
	getJavacNodes(javacNodes, node);
	} else if (node instanceof AntTaskNode) {
	AntTaskNode task= (AntTaskNode)node;
	if (task.getName() == "javac") { //$NON-NLS-1$
	javacNodes.add(task);
	}
	}
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.IDialogPage#setVisible(boolean)
	*/
	public void setVisible(boolean visible) {
	super.setVisible(visible);
	if(visible)
	this.locationPathField.setFocus();
	}
	}