ant/org.eclipse.ant.ui/Ant Tools Support/org/eclipse/ant/ui/internal/preferences/AntClasspathBlock.java - platform/eclipse.platform - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2003 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.ui.internal.preferences;


 import java.io.File;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;

 import org.eclipse.ant.core.AntCorePlugin;
 import org.eclipse.ant.core.AntCorePreferences;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.Image;
 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.DirectoryDialog;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ant.ui.internal.model.AntUIPlugin;
 import org.eclipse.ant.ui.internal.model.IAntUIConstants;
 import org.eclipse.ui.externaltools.internal.ui.ExternalToolsContentProvider;

 public class AntClasspathBlock {

 	private TableViewer antTableViewer;
 	private ExternalToolsContentProvider antContentProvider;
 	private TableViewer userTableViewer;
 	private ExternalToolsContentProvider userContentProvider;

 	private Button upButton;
 	private Button downButton;
 	private Button removeButton;

 	private Button upUserButton;
 	private Button downUserButton;
 	private Button removeUserButton;

 	private final AntClasspathLabelProvider labelProvider = new AntClasspathLabelProvider();
 	private Button addUserJarButton;
 	private Button addUserFolderButtton;
 	private Button addFolderButtton;
 	private Button addJarButton;

 	private Button antHomeButton;
 	private Text antHome;
 	private Button browseAntHomeButton;

 	private final IDialogSettings dialogSettings = AntUIPlugin.getDefault().getDialogSettings();

 	private boolean initializing = true;

 	private IAntBlockContainer container;

 	private boolean tablesEnabled= true;

 	public void setContainer(IAntBlockContainer container) {
 		this.container= container;
 	}

 	private void addButtonsToButtonGroup(Composite parent) {
 		if (addJarButton == null) {
 			addJarButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.addJarButtonTitle")); //$NON-NLS-1$;
 			addJarButton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					addJars(antTableViewer);

 				}
 			});
 			addFolderButtton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.addFolderButtonTitle")); //$NON-NLS-1$;
 			addFolderButtton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					addFolder(antTableViewer, AntPreferencesMessages.getString("AntClasspathBlock.&Choose_a_folder_to_add_to_the_classpath__1")); //$NON-NLS-1$
 				}
 			});

 			upButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.upButtonTitle")); //$NON-NLS-1$;
 			upButton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					handleMove(-1, antTableViewer);
 				}
 			});
 			downButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.downButtonTitle")); //$NON-NLS-1$;
 			downButton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					handleMove(1, antTableViewer);
 				}
 			});
 			removeButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.removeButtonTitle")); //$NON-NLS-1$;
 			removeButton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					remove(antTableViewer);
 				}
 			});

 		} else {
 			addUserJarButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.addJarButtonTitle2")); //$NON-NLS-1$;
 			addUserJarButton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					addJars(userTableViewer);
 				}
 			});
 			addUserFolderButtton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.addFolderButtonTitle2")); //$NON-NLS-1$;
 			addUserFolderButtton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					addFolder(userTableViewer, AntPreferencesMessages.getString("AntClasspathBlock.&Choose_a_folder_to_add_to_the_classpath__1")); //$NON-NLS-1$
 				}
 			});
 			upUserButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.upButtonTitle2")); //$NON-NLS-1$;
 			upUserButton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					handleMove(-1, userTableViewer);
 				}
 			});
 			downUserButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.downButtonTitle2")); //$NON-NLS-1$;
 			downUserButton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					handleMove(1, userTableViewer);
 				}
 			});
 			removeUserButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.removeButtonTitle2")); //$NON-NLS-1$;
 			removeUserButton.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent evt) {
 					remove(userTableViewer);
 				}
 			});
 		}
 	}

 	private void handleMove(int direction, TableViewer viewer) {
 		IStructuredSelection sel = (IStructuredSelection) viewer.getSelection();
 		List selList = sel.toList();
 		Object[] elements = ((ExternalToolsContentProvider) viewer.getContentProvider()).getElements(viewer.getInput());
 		List contents = new ArrayList(elements.length);
 		for (int i = 0; i < elements.length; i++) {
 			contents.add(elements[i]);
 		}
 		Object[] moved = new Object[contents.size()];
 		int i;
 		for (Iterator current = selList.iterator(); current.hasNext();) {
 			Object config = current.next();
 			i = contents.indexOf(config);
 			moved[i + direction] = config;
 		}

 		contents.removeAll(selList);

 		for (int j = 0; j < moved.length; j++) {
 			Object config = moved[j];
 			if (config != null) {
 				contents.add(j, config);
 			}
 		}
 		viewer.setInput(contents);
 		viewer.setSelection(viewer.getSelection());
 		container.update();
 	}

 	private void remove(TableViewer viewer) {
 		ExternalToolsContentProvider viewerContentProvider = (ExternalToolsContentProvider) viewer.getContentProvider();
 		IStructuredSelection sel = (IStructuredSelection) viewer.getSelection();
 		Iterator enum = sel.iterator();
 		while (enum.hasNext()) {
 			viewerContentProvider.remove(enum.next());
 		}
 		container.update();
 	}

 	/**
 	 * Allows the user to enter a folder as a classpath.
 	 */
 	private void addFolder(TableViewer viewer, String message) {
 		String lastUsedPath = dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTFOLDER);
 		if (lastUsedPath == null) {
 			lastUsedPath = ResourcesPlugin.getWorkspace().getRoot().getLocation().toOSString();
 		}
 		DirectoryDialog dialog = new DirectoryDialog(antTableViewer.getControl().getShell());
 		dialog.setMessage(message);
 		dialog.setFilterPath(lastUsedPath);
 		String result = dialog.open();
 		if (result != null) {
 			try {
 				URL url = new URL("file:" + result + "/"); //$NON-NLS-2$;//$NON-NLS-1$;
 				((ExternalToolsContentProvider)viewer.getContentProvider()).add(url);
 			} catch (MalformedURLException e) {
 			}
 		}
 		viewer.setSelection(viewer.getSelection());
 		dialogSettings.put(IAntUIConstants.DIALOGSTORE_LASTFOLDER, result);
 		container.update();
 	}

 	private void addJars(TableViewer viewer) {
 		String lastUsedPath = dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTEXTJAR);
 		if (lastUsedPath == null) {
 			lastUsedPath = ResourcesPlugin.getWorkspace().getRoot().getLocation().toOSString();
 		}
 		FileDialog dialog = new FileDialog(antTableViewer.getControl().getShell(), SWT.MULTI);
 		dialog.setFilterExtensions(new String[] { "*.jar" }); //$NON-NLS-1$;
 		dialog.setFilterPath(lastUsedPath);

 		String result = dialog.open();
 		if (result == null) {
 			return;
 		}
 		IPath filterPath = new Path(dialog.getFilterPath());
 		String[] results = dialog.getFileNames();
 		for (int i = 0; i < results.length; i++) {
 			String jarName = results[i];
 			try {
 				IPath path = filterPath.append(jarName).makeAbsolute();
 				URL url = new URL("file:" + path.toOSString()); //$NON-NLS-1$;
 				((ExternalToolsContentProvider)viewer.getContentProvider()).add(url);
 			} catch (MalformedURLException e) {
 			}
 		}

 		viewer.setSelection(viewer.getSelection());
 		dialogSettings.put(IAntUIConstants.DIALOGSTORE_LASTEXTJAR, filterPath.toOSString());
 		container.update();
 	}

 	/**
 	 * Creates the group which will contain the buttons.
 	 */
 	private void createButtonGroup(Composite top) {
 		Composite buttonGroup = new Composite(top, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		buttonGroup.setLayout(layout);
 		buttonGroup.setLayoutData(new GridData(GridData.FILL_VERTICAL));
 		buttonGroup.setFont(top.getFont());

 		addButtonsToButtonGroup(buttonGroup);
 	}

 	private void createAntTable(Composite parent) {
 		Table table = new Table(parent, SWT.MULTI | SWT.FULL_SELECTION | SWT.BORDER);
 		GridData data = new GridData(GridData.FILL_BOTH);
 		data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 		data.heightHint = table.getItemHeight();
 		data.horizontalSpan = 1;
 		table.setLayoutData(data);
 		table.setFont(parent.getFont());

 		antContentProvider = new AntClasspathContentProvider();
 		antTableViewer = new TableViewer(table);
 		antTableViewer.setContentProvider(antContentProvider);
 		antTableViewer.setLabelProvider(labelProvider);
 		antTableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				if (tablesEnabled) {
 					tableSelectionChanged((IStructuredSelection) event.getSelection(),
 						(ExternalToolsContentProvider) antTableViewer.getContentProvider(), false);
 				}
 			}
 		});
 	}

 	public void createContents(Composite parent) {
 		Font font = parent.getFont();
 		Label label = new Label(parent, SWT.NONE);
 		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		gd.horizontalSpan = 2;
 		label.setLayoutData(gd);
 		label.setFont(font);
 		label.setText(AntPreferencesMessages.getString("AntClasspathBlock.Run&time_classpath__8")); //$NON-NLS-1$

 		createAntTable(parent);
 		createButtonGroup(parent);

 		createSeparator(parent);

 		createAntHome(parent);

 		label = new Label(parent, SWT.NONE);
 		gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		gd.horizontalSpan = 2;
 		label.setLayoutData(gd);
 		label.setFont(font);
 		label.setText(AntPreferencesMessages.getString("AntClasspathBlock.Additional_classpath_entries__11")); //$NON-NLS-1$

 		createUserTable(parent);
 		createButtonGroup(parent);
 	}

 	private void createUserTable(Composite top) {
 		Table table = new Table(top, SWT.MULTI | SWT.FULL_SELECTION | SWT.BORDER);
 		GridData data = new GridData(GridData.FILL_BOTH);
 		data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 		data.heightHint = table.getItemHeight();
 		data.horizontalSpan = 1;
 		table.setLayoutData(data);
 		table.setFont(top.getFont());
 		userContentProvider = new AntClasspathContentProvider();
 		userTableViewer = new TableViewer(table);
 		userTableViewer.setContentProvider(userContentProvider);
 		userTableViewer.setLabelProvider(labelProvider);
 		userTableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				if (tablesEnabled) {
 					tableSelectionChanged((IStructuredSelection) event.getSelection(),
 						(ExternalToolsContentProvider) userTableViewer.getContentProvider(), true);
 				}
 			}
 		});
 	}

 	/**
 	 * Creates a space between controls
 	 */
 	private Label createSeparator(Composite parent) {
 		Label separator = new Label(parent, SWT.NONE);
 		GridData gd =
 			new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_BEGINNING);
 		gd.heightHint = 4;
 		gd.horizontalSpan = 2;
 		separator.setLayoutData(gd);
 		return separator;
 	}

 	private void createAntHome(Composite top) {
 		Composite antHomeComposite = new Composite(top, SWT.NONE);
 		antHomeComposite.setLayoutData(
 			new GridData(
 				GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL));
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		antHomeComposite.setLayout(layout);
 		antHomeComposite.setFont(top.getFont());

 		antHomeButton = new Button(antHomeComposite, SWT.CHECK);
 		antHomeButton.setFont(top.getFont());
 		antHomeButton.setText(AntPreferencesMessages.getString("AntClasspathBlock.Set_ANT_HO&ME_9")); //$NON-NLS-1$
 		antHomeButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent evt) {
 				specifyAntHome();
 			}
 		});

 		antHome = new Text(antHomeComposite, SWT.BORDER);
 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 		antHome.setLayoutData(gd);
 		antHome.setFont(top.getFont());
 		antHome.setEnabled(false);
 		antHome.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				if (initializing) {
 					return;
 				}
 				String path= antHome.getText();
 				if (path.length() > 0) {
 					File rootDir = new File(path, "lib"); //$NON-NLS-1$
 					if (rootDir.exists()) {
 						setAntHome(rootDir);
 					}
 				}
 				container.update();
 			}
 		});

 		browseAntHomeButton = container.createPushButton(top, AntPreferencesMessages.getString("AntClasspathBlock.&Browse..._10")); //$NON-NLS-1$
 		browseAntHomeButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				browseAntHome();
 			}
 		});
 		browseAntHomeButton.setEnabled(false);
 	}

 	/* (non-Javadoc)
 	 * Method declared on AntPage.
 	 */
 	private void tableSelectionChanged(IStructuredSelection selection, ExternalToolsContentProvider contentProvider, boolean user) {
 		Object[] elements = contentProvider.getElements(null);
 		List urls = Arrays.asList(elements);
 		boolean notEmpty = !selection.isEmpty();
 		Iterator selected = selection.iterator();
 		boolean first = false;
 		boolean last = false;
 		int lastUrl = urls.size() - 1;
 		while (selected.hasNext()) {
 			Object element = (Object) selected.next();
 			if (!first && urls.indexOf(element) == 0) {
 				first = true;
 			}
 			if (!last && urls.indexOf(element) == lastUrl) {
 				last = true;
 			}
 		}

 		if (user) {
 			removeUserButton.setEnabled(notEmpty);
 			upUserButton.setEnabled(notEmpty && !first);
 			downUserButton.setEnabled(notEmpty && !last);
 		} else {
 			removeButton.setEnabled(notEmpty);
 			upButton.setEnabled(notEmpty && !first);
 			downButton.setEnabled(notEmpty && !last);
 		}
 	}

 	private void specifyAntHome() {
 		antHome.setEnabled(!antHome.getEnabled());
 		browseAntHomeButton.setEnabled(!browseAntHomeButton.getEnabled());
 		if (antHome.isEnabled()) {
 			File rootDir = validateAntHome(antHome.getText());
 			if (rootDir != null) {
 				setAntHome(rootDir);
 			}
 		} else {
 			container.setMessage(null);
 			container.setErrorMessage(null);
 		}
 		container.update();
 	}

 	private File validateAntHome(String path) {
 		File rootDir = null;
 		if (path.length() > 0) {
 			rootDir = new File(path, "lib"); //$NON-NLS-1$
 			if (!rootDir.exists()) {
 				container.setErrorMessage(AntPreferencesMessages.getString("AntClasspathBlock.Specified_ANT_HOME_does_not_contain_a___lib___directory_7")); //$NON-NLS-1$
 				return null;
 			}
 		} else {
 			container.setErrorMessage(AntPreferencesMessages.getString("AntClasspathBlock.Specified_ANT_HOME_does_not_contain_a___lib___directory_7")); //$NON-NLS-1$
 			return null;
 		}

 		container.setErrorMessage(null);
 		return rootDir;
 	}

 	private void browseAntHome() {
 		String lastUsedPath= dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTANTHOME);
 		if (lastUsedPath == null) {
 			lastUsedPath= ResourcesPlugin.getWorkspace().getRoot().getLocation().toOSString();
 		}
 		DirectoryDialog dialog = new DirectoryDialog(antTableViewer.getControl().getShell());
 		dialog.setMessage(AntPreferencesMessages.getString("AntClasspathBlock.&Choose_a_folder_that_will_be_used_as_the_location_of_ANT_HOME_3")); //$NON-NLS-1$
 		dialog.setFilterPath(lastUsedPath);
 		String path = dialog.open();
 		if (path == null) {
 			return;
 		}

 		antHome.setText(path);
 		dialogSettings.put(IAntUIConstants.DIALOGSTORE_LASTANTHOME, path);
 		container.update();
 	}

 	private void setAntHome(File rootDir) {
 		AntClasspathContentProvider contentProvider = (AntClasspathContentProvider) antTableViewer.getContentProvider();
 		contentProvider.removeAll();
 		String[] names = rootDir.list();
 		for (int i = 0; i < names.length; i++) {
 			File file = new File(rootDir, names[i]);
 			if (file.isFile() && file.getPath().endsWith(".jar")) { //$NON-NLS-1$
 				try {
 					IPath jarPath = new Path(file.getAbsolutePath());
 					URL url = new URL("file:" + jarPath.toOSString()); //$NON-NLS-1$
 					contentProvider.add(url);
 				} catch (MalformedURLException e) {
 				}
 			}
 		}
 		AntCorePreferences prefs = AntCorePlugin.getPlugin().getPreferences();
 		URL url = prefs.getToolsJarURL();
 		if (url != null) {
 			contentProvider.add(url);
 		}
 		container.update();
 	}

 	public List getAntURLs() {
 		Object[] elements = antContentProvider.getElements(null);
 		return Arrays.asList(elements);
 	}

 	public List getUserURLs() {
 		Object[] elements = userContentProvider.getElements(null);
 		return Arrays.asList(elements);
 	}

 	public String getAntHome() {
 		String antHomeText= antHome.getText().trim();
 		if (!antHomeButton.getSelection() || antHomeText.length() == 0) {
 			antHomeText= null;
 		}
 		return antHomeText;
 	}

 	public void setEnabled(boolean enable) {
 		setTablesEnabled(enable);
 		antHomeButton.setEnabled(enable);
 		addFolderButtton.setEnabled(enable);
 		addJarButton.setEnabled(enable);
 		addUserJarButton.setEnabled(enable);
 		addUserFolderButtton.setEnabled(enable);
 		if (enable) {
 			antTableViewer.setSelection(antTableViewer.getSelection());
 			userTableViewer.setSelection(userTableViewer.getSelection());
 		} else {
 			antHomeButton.setSelection(false);
 			antHome.setEnabled(false);
 			browseAntHomeButton.setEnabled(false);
 			downButton.setEnabled(false);
 			downUserButton.setEnabled(false);
 			removeButton.setEnabled(false);
 			removeUserButton.setEnabled(false);
 			upButton.setEnabled(false);
 			upUserButton.setEnabled(false);
 			AntCorePreferences prefs = AntCorePlugin.getPlugin().getPreferences();
 			antTableViewer.setInput(prefs.getAntURLs());
 			userTableViewer.setInput(prefs.getCustomURLs());
 		}
 	}

 	public void initializeAntHome(String antHomeString) {
 		antHomeButton.setSelection(antHomeString != null);
 		antHome.setEnabled(antHomeString != null);
 		browseAntHomeButton.setEnabled(antHomeString != null);
 		if (antHomeString != null) {
 			antHome.setText(antHomeString);
 		} else {
 			antHome.setText(""); //$NON-NLS-1$
 		}
 		initializing= false;
 	}

 	public void setUserTableInput(Object input) {
 		userTableViewer.setInput(input);
 	}

 	public void setAntTableInput(Object input) {
 		antTableViewer.setInput(input);
 	}

 	public boolean isAntHomeEnabled() {
 		return antHome.isEnabled();
 	}

 	public boolean validateAntHome() {
 		return validateAntHome(antHome.getText()) != null;
 	}

 	public Image getClasspathImage() {
 		return labelProvider.getClasspathImage();
 	}

 	public void setTablesEnabled(boolean tablesEnabled) {
 		this.tablesEnabled= tablesEnabled;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2003 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.ui.internal.preferences;


	import java.io.File;
	import java.net.MalformedURLException;
	import java.net.URL;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Iterator;
	import java.util.List;

	import org.eclipse.ant.core.AntCorePlugin;
	import org.eclipse.ant.core.AntCorePreferences;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.graphics.Image;
	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.DirectoryDialog;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ant.ui.internal.model.AntUIPlugin;
	import org.eclipse.ant.ui.internal.model.IAntUIConstants;
	import org.eclipse.ui.externaltools.internal.ui.ExternalToolsContentProvider;

	public class AntClasspathBlock {

	private TableViewer antTableViewer;
	private ExternalToolsContentProvider antContentProvider;
	private TableViewer userTableViewer;
	private ExternalToolsContentProvider userContentProvider;

	private Button upButton;
	private Button downButton;
	private Button removeButton;

	private Button upUserButton;
	private Button downUserButton;
	private Button removeUserButton;

	private final AntClasspathLabelProvider labelProvider = new AntClasspathLabelProvider();
	private Button addUserJarButton;
	private Button addUserFolderButtton;
	private Button addFolderButtton;
	private Button addJarButton;

	private Button antHomeButton;
	private Text antHome;
	private Button browseAntHomeButton;

	private final IDialogSettings dialogSettings = AntUIPlugin.getDefault().getDialogSettings();

	private boolean initializing = true;

	private IAntBlockContainer container;

	private boolean tablesEnabled= true;

	public void setContainer(IAntBlockContainer container) {
	this.container= container;
	}

	private void addButtonsToButtonGroup(Composite parent) {
	if (addJarButton == null) {
	addJarButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.addJarButtonTitle")); //$NON-NLS-1$;
	addJarButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	addJars(antTableViewer);

	}
	});
	addFolderButtton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.addFolderButtonTitle")); //$NON-NLS-1$;
	addFolderButtton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	addFolder(antTableViewer, AntPreferencesMessages.getString("AntClasspathBlock.&Choose_a_folder_to_add_to_the_classpath__1")); //$NON-NLS-1$
	}
	});

	upButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.upButtonTitle")); //$NON-NLS-1$;
	upButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleMove(-1, antTableViewer);
	}
	});
	downButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.downButtonTitle")); //$NON-NLS-1$;
	downButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleMove(1, antTableViewer);
	}
	});
	removeButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.removeButtonTitle")); //$NON-NLS-1$;
	removeButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	remove(antTableViewer);
	}
	});

	} else {
	addUserJarButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.addJarButtonTitle2")); //$NON-NLS-1$;
	addUserJarButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	addJars(userTableViewer);
	}
	});
	addUserFolderButtton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.addFolderButtonTitle2")); //$NON-NLS-1$;
	addUserFolderButtton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	addFolder(userTableViewer, AntPreferencesMessages.getString("AntClasspathBlock.&Choose_a_folder_to_add_to_the_classpath__1")); //$NON-NLS-1$
	}
	});
	upUserButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.upButtonTitle2")); //$NON-NLS-1$;
	upUserButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleMove(-1, userTableViewer);
	}
	});
	downUserButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.downButtonTitle2")); //$NON-NLS-1$;
	downUserButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleMove(1, userTableViewer);
	}
	});
	removeUserButton = container.createPushButton(parent, AntPreferencesMessages.getString("AntClasspathBlock.removeButtonTitle2")); //$NON-NLS-1$;
	removeUserButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	remove(userTableViewer);
	}
	});
	}
	}

	private void handleMove(int direction, TableViewer viewer) {
	IStructuredSelection sel = (IStructuredSelection) viewer.getSelection();
	List selList = sel.toList();
	Object[] elements = ((ExternalToolsContentProvider) viewer.getContentProvider()).getElements(viewer.getInput());
	List contents = new ArrayList(elements.length);
	for (int i = 0; i < elements.length; i++) {
	contents.add(elements[i]);
	}
	Object[] moved = new Object[contents.size()];
	int i;
	for (Iterator current = selList.iterator(); current.hasNext();) {
	Object config = current.next();
	i = contents.indexOf(config);
	moved[i + direction] = config;
	}

	contents.removeAll(selList);

	for (int j = 0; j < moved.length; j++) {
	Object config = moved[j];
	if (config != null) {
	contents.add(j, config);
	}
	}
	viewer.setInput(contents);
	viewer.setSelection(viewer.getSelection());
	container.update();
	}

	private void remove(TableViewer viewer) {
	ExternalToolsContentProvider viewerContentProvider = (ExternalToolsContentProvider) viewer.getContentProvider();
	IStructuredSelection sel = (IStructuredSelection) viewer.getSelection();
	Iterator enum = sel.iterator();
	while (enum.hasNext()) {
	viewerContentProvider.remove(enum.next());
	}
	container.update();
	}

	/**
	* Allows the user to enter a folder as a classpath.
	*/
	private void addFolder(TableViewer viewer, String message) {
	String lastUsedPath = dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTFOLDER);
	if (lastUsedPath == null) {
	lastUsedPath = ResourcesPlugin.getWorkspace().getRoot().getLocation().toOSString();
	}
	DirectoryDialog dialog = new DirectoryDialog(antTableViewer.getControl().getShell());
	dialog.setMessage(message);
	dialog.setFilterPath(lastUsedPath);
	String result = dialog.open();
	if (result != null) {
	try {
	URL url = new URL("file:" + result + "/"); //$NON-NLS-2$;//$NON-NLS-1$;
	((ExternalToolsContentProvider)viewer.getContentProvider()).add(url);
	} catch (MalformedURLException e) {
	}
	}
	viewer.setSelection(viewer.getSelection());
	dialogSettings.put(IAntUIConstants.DIALOGSTORE_LASTFOLDER, result);
	container.update();
	}

	private void addJars(TableViewer viewer) {
	String lastUsedPath = dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTEXTJAR);
	if (lastUsedPath == null) {
	lastUsedPath = ResourcesPlugin.getWorkspace().getRoot().getLocation().toOSString();
	}
	FileDialog dialog = new FileDialog(antTableViewer.getControl().getShell(), SWT.MULTI);
	dialog.setFilterExtensions(new String[] { "*.jar" }); //$NON-NLS-1$;
	dialog.setFilterPath(lastUsedPath);

	String result = dialog.open();
	if (result == null) {
	return;
	}
	IPath filterPath = new Path(dialog.getFilterPath());
	String[] results = dialog.getFileNames();
	for (int i = 0; i < results.length; i++) {
	String jarName = results[i];
	try {
	IPath path = filterPath.append(jarName).makeAbsolute();
	URL url = new URL("file:" + path.toOSString()); //$NON-NLS-1$;
	((ExternalToolsContentProvider)viewer.getContentProvider()).add(url);
	} catch (MalformedURLException e) {
	}
	}

	viewer.setSelection(viewer.getSelection());
	dialogSettings.put(IAntUIConstants.DIALOGSTORE_LASTEXTJAR, filterPath.toOSString());
	container.update();
	}

	/**
	* Creates the group which will contain the buttons.
	*/
	private void createButtonGroup(Composite top) {
	Composite buttonGroup = new Composite(top, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	buttonGroup.setLayout(layout);
	buttonGroup.setLayoutData(new GridData(GridData.FILL_VERTICAL));
	buttonGroup.setFont(top.getFont());

	addButtonsToButtonGroup(buttonGroup);
	}

	private void createAntTable(Composite parent) {
	Table table = new Table(parent, SWT.MULTI \| SWT.FULL_SELECTION \| SWT.BORDER);
	GridData data = new GridData(GridData.FILL_BOTH);
	data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
	data.heightHint = table.getItemHeight();
	data.horizontalSpan = 1;
	table.setLayoutData(data);
	table.setFont(parent.getFont());

	antContentProvider = new AntClasspathContentProvider();
	antTableViewer = new TableViewer(table);
	antTableViewer.setContentProvider(antContentProvider);
	antTableViewer.setLabelProvider(labelProvider);
	antTableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	if (tablesEnabled) {
	tableSelectionChanged((IStructuredSelection) event.getSelection(),
	(ExternalToolsContentProvider) antTableViewer.getContentProvider(), false);
	}
	}
	});
	}

	public void createContents(Composite parent) {
	Font font = parent.getFont();
	Label label = new Label(parent, SWT.NONE);
	GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.horizontalSpan = 2;
	label.setLayoutData(gd);
	label.setFont(font);
	label.setText(AntPreferencesMessages.getString("AntClasspathBlock.Run&time_classpath__8")); //$NON-NLS-1$

	createAntTable(parent);
	createButtonGroup(parent);

	createSeparator(parent);

	createAntHome(parent);

	label = new Label(parent, SWT.NONE);
	gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.horizontalSpan = 2;
	label.setLayoutData(gd);
	label.setFont(font);
	label.setText(AntPreferencesMessages.getString("AntClasspathBlock.Additional_classpath_entries__11")); //$NON-NLS-1$

	createUserTable(parent);
	createButtonGroup(parent);
	}

	private void createUserTable(Composite top) {
	Table table = new Table(top, SWT.MULTI \| SWT.FULL_SELECTION \| SWT.BORDER);
	GridData data = new GridData(GridData.FILL_BOTH);
	data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
	data.heightHint = table.getItemHeight();
	data.horizontalSpan = 1;
	table.setLayoutData(data);
	table.setFont(top.getFont());
	userContentProvider = new AntClasspathContentProvider();
	userTableViewer = new TableViewer(table);
	userTableViewer.setContentProvider(userContentProvider);
	userTableViewer.setLabelProvider(labelProvider);
	userTableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	if (tablesEnabled) {
	tableSelectionChanged((IStructuredSelection) event.getSelection(),
	(ExternalToolsContentProvider) userTableViewer.getContentProvider(), true);
	}
	}
	});
	}

	/**
	* Creates a space between controls
	*/
	private Label createSeparator(Composite parent) {
	Label separator = new Label(parent, SWT.NONE);
	GridData gd =
	new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_BEGINNING);
	gd.heightHint = 4;
	gd.horizontalSpan = 2;
	separator.setLayoutData(gd);
	return separator;
	}

	private void createAntHome(Composite top) {
	Composite antHomeComposite = new Composite(top, SWT.NONE);
	antHomeComposite.setLayoutData(
	new GridData(
	GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL));
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	antHomeComposite.setLayout(layout);
	antHomeComposite.setFont(top.getFont());

	antHomeButton = new Button(antHomeComposite, SWT.CHECK);
	antHomeButton.setFont(top.getFont());
	antHomeButton.setText(AntPreferencesMessages.getString("AntClasspathBlock.Set_ANT_HO&ME_9")); //$NON-NLS-1$
	antHomeButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	specifyAntHome();
	}
	});

	antHome = new Text(antHomeComposite, SWT.BORDER);
	GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
	antHome.setLayoutData(gd);
	antHome.setFont(top.getFont());
	antHome.setEnabled(false);
	antHome.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	if (initializing) {
	return;
	}
	String path= antHome.getText();
	if (path.length() > 0) {
	File rootDir = new File(path, "lib"); //$NON-NLS-1$
	if (rootDir.exists()) {
	setAntHome(rootDir);
	}
	}
	container.update();
	}
	});

	browseAntHomeButton = container.createPushButton(top, AntPreferencesMessages.getString("AntClasspathBlock.&Browse..._10")); //$NON-NLS-1$
	browseAntHomeButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	browseAntHome();
	}
	});
	browseAntHomeButton.setEnabled(false);
	}

	/* (non-Javadoc)
	* Method declared on AntPage.
	*/
	private void tableSelectionChanged(IStructuredSelection selection, ExternalToolsContentProvider contentProvider, boolean user) {
	Object[] elements = contentProvider.getElements(null);
	List urls = Arrays.asList(elements);
	boolean notEmpty = !selection.isEmpty();
	Iterator selected = selection.iterator();
	boolean first = false;
	boolean last = false;
	int lastUrl = urls.size() - 1;
	while (selected.hasNext()) {
	Object element = (Object) selected.next();
	if (!first && urls.indexOf(element) == 0) {
	first = true;
	}
	if (!last && urls.indexOf(element) == lastUrl) {
	last = true;
	}
	}

	if (user) {
	removeUserButton.setEnabled(notEmpty);
	upUserButton.setEnabled(notEmpty && !first);
	downUserButton.setEnabled(notEmpty && !last);
	} else {
	removeButton.setEnabled(notEmpty);
	upButton.setEnabled(notEmpty && !first);
	downButton.setEnabled(notEmpty && !last);
	}
	}

	private void specifyAntHome() {
	antHome.setEnabled(!antHome.getEnabled());
	browseAntHomeButton.setEnabled(!browseAntHomeButton.getEnabled());
	if (antHome.isEnabled()) {
	File rootDir = validateAntHome(antHome.getText());
	if (rootDir != null) {
	setAntHome(rootDir);
	}
	} else {
	container.setMessage(null);
	container.setErrorMessage(null);
	}
	container.update();
	}

	private File validateAntHome(String path) {
	File rootDir = null;
	if (path.length() > 0) {
	rootDir = new File(path, "lib"); //$NON-NLS-1$
	if (!rootDir.exists()) {
	container.setErrorMessage(AntPreferencesMessages.getString("AntClasspathBlock.Specified_ANT_HOME_does_not_contain_a___lib___directory_7")); //$NON-NLS-1$
	return null;
	}
	} else {
	container.setErrorMessage(AntPreferencesMessages.getString("AntClasspathBlock.Specified_ANT_HOME_does_not_contain_a___lib___directory_7")); //$NON-NLS-1$
	return null;
	}

	container.setErrorMessage(null);
	return rootDir;
	}

	private void browseAntHome() {
	String lastUsedPath= dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTANTHOME);
	if (lastUsedPath == null) {
	lastUsedPath= ResourcesPlugin.getWorkspace().getRoot().getLocation().toOSString();
	}
	DirectoryDialog dialog = new DirectoryDialog(antTableViewer.getControl().getShell());
	dialog.setMessage(AntPreferencesMessages.getString("AntClasspathBlock.&Choose_a_folder_that_will_be_used_as_the_location_of_ANT_HOME_3")); //$NON-NLS-1$
	dialog.setFilterPath(lastUsedPath);
	String path = dialog.open();
	if (path == null) {
	return;
	}

	antHome.setText(path);
	dialogSettings.put(IAntUIConstants.DIALOGSTORE_LASTANTHOME, path);
	container.update();
	}

	private void setAntHome(File rootDir) {
	AntClasspathContentProvider contentProvider = (AntClasspathContentProvider) antTableViewer.getContentProvider();
	contentProvider.removeAll();
	String[] names = rootDir.list();
	for (int i = 0; i < names.length; i++) {
	File file = new File(rootDir, names[i]);
	if (file.isFile() && file.getPath().endsWith(".jar")) { //$NON-NLS-1$
	try {
	IPath jarPath = new Path(file.getAbsolutePath());
	URL url = new URL("file:" + jarPath.toOSString()); //$NON-NLS-1$
	contentProvider.add(url);
	} catch (MalformedURLException e) {
	}
	}
	}
	AntCorePreferences prefs = AntCorePlugin.getPlugin().getPreferences();
	URL url = prefs.getToolsJarURL();
	if (url != null) {
	contentProvider.add(url);
	}
	container.update();
	}

	public List getAntURLs() {
	Object[] elements = antContentProvider.getElements(null);
	return Arrays.asList(elements);
	}

	public List getUserURLs() {
	Object[] elements = userContentProvider.getElements(null);
	return Arrays.asList(elements);
	}

	public String getAntHome() {
	String antHomeText= antHome.getText().trim();
	if (!antHomeButton.getSelection() \|\| antHomeText.length() == 0) {
	antHomeText= null;
	}
	return antHomeText;
	}

	public void setEnabled(boolean enable) {
	setTablesEnabled(enable);
	antHomeButton.setEnabled(enable);
	addFolderButtton.setEnabled(enable);
	addJarButton.setEnabled(enable);
	addUserJarButton.setEnabled(enable);
	addUserFolderButtton.setEnabled(enable);
	if (enable) {
	antTableViewer.setSelection(antTableViewer.getSelection());
	userTableViewer.setSelection(userTableViewer.getSelection());
	} else {
	antHomeButton.setSelection(false);
	antHome.setEnabled(false);
	browseAntHomeButton.setEnabled(false);
	downButton.setEnabled(false);
	downUserButton.setEnabled(false);
	removeButton.setEnabled(false);
	removeUserButton.setEnabled(false);
	upButton.setEnabled(false);
	upUserButton.setEnabled(false);
	AntCorePreferences prefs = AntCorePlugin.getPlugin().getPreferences();
	antTableViewer.setInput(prefs.getAntURLs());
	userTableViewer.setInput(prefs.getCustomURLs());
	}
	}

	public void initializeAntHome(String antHomeString) {
	antHomeButton.setSelection(antHomeString != null);
	antHome.setEnabled(antHomeString != null);
	browseAntHomeButton.setEnabled(antHomeString != null);
	if (antHomeString != null) {
	antHome.setText(antHomeString);
	} else {
	antHome.setText(""); //$NON-NLS-1$
	}
	initializing= false;
	}

	public void setUserTableInput(Object input) {
	userTableViewer.setInput(input);
	}

	public void setAntTableInput(Object input) {
	antTableViewer.setInput(input);
	}

	public boolean isAntHomeEnabled() {
	return antHome.isEnabled();
	}

	public boolean validateAntHome() {
	return validateAntHome(antHome.getText()) != null;
	}

	public Image getClasspathImage() {
	return labelProvider.getClasspathImage();
	}

	public void setTablesEnabled(boolean tablesEnabled) {
	this.tablesEnabled= tablesEnabled;
	}
	}