org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/dialogs/PackageSelectionDialog.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * 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:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdt.internal.ui.dialogs;

 import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
 import java.util.HashSet;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;

 import org.eclipse.jdt.core.IJavaElement;
 import org.eclipse.jdt.core.IPackageFragment;
 import org.eclipse.jdt.core.IPackageFragmentRoot;
 import org.eclipse.jdt.core.search.IJavaSearchConstants;
 import org.eclipse.jdt.core.search.IJavaSearchScope;
 import org.eclipse.jdt.core.search.SearchEngine;
 import org.eclipse.jdt.core.search.SearchMatch;
 import org.eclipse.jdt.core.search.SearchPattern;
 import org.eclipse.jdt.core.search.SearchRequestor;

 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Shell;

 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.operation.IRunnableContext;
 import org.eclipse.jface.operation.IRunnableWithProgress;
 import org.eclipse.jface.viewers.ILabelProvider;

 import org.eclipse.ui.dialogs.ElementListSelectionDialog;
 import org.eclipse.ui.PlatformUI;

 import org.eclipse.jdt.internal.corext.util.SearchUtils;

 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
 import org.eclipse.jdt.internal.ui.JavaPlugin;
 import org.eclipse.jdt.internal.ui.JavaUIMessages;
 import org.eclipse.jdt.internal.ui.util.ExceptionHandler;

 import org.eclipse.jdt.ui.JavaElementLabelProvider;

 /**
  * Dialog to browse for package fragments.
  */
 public class PackageSelectionDialog extends ElementListSelectionDialog {

 	public static final int F_REMOVE_DUPLICATES= 1;
 	public static final int F_SHOW_PARENTS= 2;
 	public static final int F_HIDE_DEFAULT_PACKAGE= 4;
 	public static final int F_HIDE_EMPTY_INNER= 8;


 	/** The dialog location. */
 	private Point fLocation;
 	/** The dialog size. */
 	private Point fSize;

 	private IRunnableContext fContext;
 	private IJavaSearchScope fScope;
 	private int fFlags;

 	/**
 	 * Creates a package selection dialog.
 	 * @param parent the parent shell
 	 * @param context the runnable context to run the search in
 	 * @param flags a combination of <code>F_REMOVE_DUPLICATES</code>, <code>F_SHOW_PARENTS</code>,
 	 *  <code>F_HIDE_DEFAULT_PACKAGE</code> and  <code>F_HIDE_EMPTY_INNER</code>
 	 * @param scope the scope defining the available packages.
 	 */
 	public PackageSelectionDialog(Shell parent, IRunnableContext context, int flags, IJavaSearchScope scope) {
 		super(parent, createLabelProvider(flags));
 		fFlags= flags;
 		fScope= scope;
 		fContext= context;
 	}

 	private static ILabelProvider createLabelProvider(int dialogFlags) {
 		int flags= JavaElementLabelProvider.SHOW_DEFAULT;
 		if ((dialogFlags & F_REMOVE_DUPLICATES) == 0) {
 			flags= flags | JavaElementLabelProvider.SHOW_ROOT;
 		}
 		return new JavaElementLabelProvider(flags);
 	}


 	/*
 	 * @see org.eclipse.jface.window.Window#open()
 	 */
 	public int open() {
 		final ArrayList packageList= new ArrayList();

 		IRunnableWithProgress runnable= new IRunnableWithProgress() {
 			public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
 				try {
 					SearchRequestor requestor= new SearchRequestor() {
 						private HashSet fSet= new HashSet();
 						private final boolean fAddDefault= (fFlags & F_HIDE_DEFAULT_PACKAGE) == 0;
 						private final boolean fDuplicates= (fFlags & F_REMOVE_DUPLICATES) == 0;
 						private final boolean fIncludeParents= (fFlags & F_SHOW_PARENTS) != 0;
 						private final boolean fHideEmptyInner= (fFlags & F_HIDE_EMPTY_INNER) != 0;

 						public void acceptSearchMatch(SearchMatch match) throws CoreException {
 							IJavaElement enclosingElement= (IJavaElement) match.getElement();
 							String name= enclosingElement.getElementName();
 							if (fAddDefault || name.length() > 0) {
 								if (fDuplicates || fSet.add(name)) {
 									if (fHideEmptyInner) {
 										IPackageFragment pkg= (IPackageFragment) enclosingElement;
 										if (pkg.getCompilationUnits().length == 0 && pkg.getClassFiles().length == 0) {
 											return;
 										}
 									}
 									packageList.add(enclosingElement);
 									if (fIncludeParents) {
 										addParentPackages(enclosingElement, name);
 									}
 								}
 							}
 						}

 						private void addParentPackages(IJavaElement enclosingElement, String name) {
 							IPackageFragmentRoot root= (IPackageFragmentRoot) enclosingElement.getParent();
 							int idx= name.lastIndexOf('.');
 							while (idx != -1) {
 								name= name.substring(0, idx);
 								if (fDuplicates || fSet.add(name)) {
 									packageList.add(root.getPackageFragment(name));
 								}
 								idx= name.lastIndexOf('.');
 							}
 						}
 					};
 					SearchPattern pattern= SearchPattern.createPattern("*", //$NON-NLS-1$
 							IJavaSearchConstants.PACKAGE, IJavaSearchConstants.DECLARATIONS,
 							SearchPattern.R_PATTERN_MATCH | SearchPattern.R_CASE_SENSITIVE);
 					new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(), fScope, requestor, monitor);
 				} catch (CoreException e) {
 					throw new InvocationTargetException(e);
 				}
 				if (monitor.isCanceled()) {
 					throw new InterruptedException();
 				}
 			}
 		};

 		try {
 			fContext.run(true, true, runnable);
 		} catch (InvocationTargetException e) {
 			ExceptionHandler.handle(e, JavaUIMessages.PackageSelectionDialog_error_title, JavaUIMessages.TypeSelectionDialog_error3Message);
 			return CANCEL;
 		} catch (InterruptedException e) {
 			// cancelled by user
 			return CANCEL;
 		}

 		if (packageList.isEmpty()) {
 			String title= JavaUIMessages.PackageSelectionDialog_nopackages_title;
 			String message= JavaUIMessages.PackageSelectionDialog_nopackages_message;
 			MessageDialog.openInformation(getShell(), title, message);
 			return CANCEL;
 		}

 		setElements(packageList.toArray());

 		return super.open();
 	}


 	/*
 	 * @see org.eclipse.jface.window.Window#configureShell(Shell)
 	 */
 	protected void configureShell(Shell newShell) {
 		super.configureShell(newShell);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, IJavaHelpContextIds.OPEN_PACKAGE_DIALOG);
 	}

 	/*
 	 * @see Window#close()
 	 */
 	public boolean close() {
 		writeSettings();
 		return super.close();
 	}

 	/*
 	 * @see org.eclipse.jface.window.Window#createContents(org.eclipse.swt.widgets.Composite)
 	 */
 	protected Control createContents(Composite parent) {
 		Control control= super.createContents(parent);
 		readSettings();
 		return control;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.window.Window#getInitialSize()
 	 */
 	protected Point getInitialSize() {
 		Point result= super.getInitialSize();
 		if (fSize != null) {
 			result.x= Math.max(result.x, fSize.x);
 			result.y= Math.max(result.y, fSize.y);
 			Rectangle display= getShell().getDisplay().getClientArea();
 			result.x= Math.min(result.x, display.width);
 			result.y= Math.min(result.y, display.height);
 		}
 		return result;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.window.Window#getInitialLocation(org.eclipse.swt.graphics.Point)
 	 */
 	protected Point getInitialLocation(Point initialSize) {
 		Point result= super.getInitialLocation(initialSize);
 		if (fLocation != null) {
 			result.x= fLocation.x;
 			result.y= fLocation.y;
 			Rectangle display= getShell().getDisplay().getClientArea();
 			int xe= result.x + initialSize.x;
 			if (xe > display.width) {
 				result.x-= xe - display.width;
 			}
 			int ye= result.y + initialSize.y;
 			if (ye > display.height) {
 				result.y-= ye - display.height;
 			}
 		}
 		return result;
 	}


 	/**
 	 * Initializes itself from the dialog settings with the same state
 	 * as at the previous invocation.
 	 */
 	private void readSettings() {
 		IDialogSettings s= getDialogSettings();
 		try {
 			int x= s.getInt("x"); //$NON-NLS-1$
 			int y= s.getInt("y"); //$NON-NLS-1$
 			fLocation= new Point(x, y);
 			int width= s.getInt("width"); //$NON-NLS-1$
 			int height= s.getInt("height"); //$NON-NLS-1$
 			fSize= new Point(width, height);

 		} catch (NumberFormatException e) {
 			fLocation= null;
 			fSize= null;
 		}
 	}

 	/**
 	 * Stores it current configuration in the dialog store.
 	 */
 	private void writeSettings() {
 		IDialogSettings s= getDialogSettings();

 		Point location= getShell().getLocation();
 		s.put("x", location.x); //$NON-NLS-1$
 		s.put("y", location.y); //$NON-NLS-1$

 		Point size= getShell().getSize();
 		s.put("width", size.x); //$NON-NLS-1$
 		s.put("height", size.y); //$NON-NLS-1$
 	}

 	/**
 	 * Returns the dialog settings object used to share state
 	 * between several find/replace dialogs.
 	 *
 	 * @return the dialog settings to be used
 	 */
 	private IDialogSettings getDialogSettings() {
 		IDialogSettings settings= JavaPlugin.getDefault().getDialogSettings();
 		String sectionName= getClass().getName();
 		IDialogSettings subSettings= settings.getSection(sectionName);
 		if (subSettings == null)
 			subSettings= settings.addNewSection(sectionName);
 		return subSettings;
 	}


 }
	/*******************************************************************************
	* Copyright (c) 2000, 2006 IBM Corporation and others.
	* 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:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdt.internal.ui.dialogs;

	import java.lang.reflect.InvocationTargetException;
	import java.util.ArrayList;
	import java.util.HashSet;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IProgressMonitor;

	import org.eclipse.jdt.core.IJavaElement;
	import org.eclipse.jdt.core.IPackageFragment;
	import org.eclipse.jdt.core.IPackageFragmentRoot;
	import org.eclipse.jdt.core.search.IJavaSearchConstants;
	import org.eclipse.jdt.core.search.IJavaSearchScope;
	import org.eclipse.jdt.core.search.SearchEngine;
	import org.eclipse.jdt.core.search.SearchMatch;
	import org.eclipse.jdt.core.search.SearchPattern;
	import org.eclipse.jdt.core.search.SearchRequestor;

	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.graphics.Rectangle;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Shell;

	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.operation.IRunnableContext;
	import org.eclipse.jface.operation.IRunnableWithProgress;
	import org.eclipse.jface.viewers.ILabelProvider;

	import org.eclipse.ui.dialogs.ElementListSelectionDialog;
	import org.eclipse.ui.PlatformUI;

	import org.eclipse.jdt.internal.corext.util.SearchUtils;

	import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
	import org.eclipse.jdt.internal.ui.JavaPlugin;
	import org.eclipse.jdt.internal.ui.JavaUIMessages;
	import org.eclipse.jdt.internal.ui.util.ExceptionHandler;

	import org.eclipse.jdt.ui.JavaElementLabelProvider;

	/**
	* Dialog to browse for package fragments.
	*/
	public class PackageSelectionDialog extends ElementListSelectionDialog {

	public static final int F_REMOVE_DUPLICATES= 1;
	public static final int F_SHOW_PARENTS= 2;
	public static final int F_HIDE_DEFAULT_PACKAGE= 4;
	public static final int F_HIDE_EMPTY_INNER= 8;


	/** The dialog location. */
	private Point fLocation;
	/** The dialog size. */
	private Point fSize;

	private IRunnableContext fContext;
	private IJavaSearchScope fScope;
	private int fFlags;

	/**
	* Creates a package selection dialog.
	* @param parent the parent shell
	* @param context the runnable context to run the search in
	* @param flags a combination of <code>F_REMOVE_DUPLICATES</code>, <code>F_SHOW_PARENTS</code>,
	* <code>F_HIDE_DEFAULT_PACKAGE</code> and <code>F_HIDE_EMPTY_INNER</code>
	* @param scope the scope defining the available packages.
	*/
	public PackageSelectionDialog(Shell parent, IRunnableContext context, int flags, IJavaSearchScope scope) {
	super(parent, createLabelProvider(flags));
	fFlags= flags;
	fScope= scope;
	fContext= context;
	}

	private static ILabelProvider createLabelProvider(int dialogFlags) {
	int flags= JavaElementLabelProvider.SHOW_DEFAULT;
	if ((dialogFlags & F_REMOVE_DUPLICATES) == 0) {
	flags= flags \| JavaElementLabelProvider.SHOW_ROOT;
	}
	return new JavaElementLabelProvider(flags);
	}


	/*
	* @see org.eclipse.jface.window.Window#open()
	*/
	public int open() {
	final ArrayList packageList= new ArrayList();

	IRunnableWithProgress runnable= new IRunnableWithProgress() {
	public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
	try {
	SearchRequestor requestor= new SearchRequestor() {
	private HashSet fSet= new HashSet();
	private final boolean fAddDefault= (fFlags & F_HIDE_DEFAULT_PACKAGE) == 0;
	private final boolean fDuplicates= (fFlags & F_REMOVE_DUPLICATES) == 0;
	private final boolean fIncludeParents= (fFlags & F_SHOW_PARENTS) != 0;
	private final boolean fHideEmptyInner= (fFlags & F_HIDE_EMPTY_INNER) != 0;

	public void acceptSearchMatch(SearchMatch match) throws CoreException {
	IJavaElement enclosingElement= (IJavaElement) match.getElement();
	String name= enclosingElement.getElementName();
	if (fAddDefault \|\| name.length() > 0) {
	if (fDuplicates \|\| fSet.add(name)) {
	if (fHideEmptyInner) {
	IPackageFragment pkg= (IPackageFragment) enclosingElement;
	if (pkg.getCompilationUnits().length == 0 && pkg.getClassFiles().length == 0) {
	return;
	}
	}
	packageList.add(enclosingElement);
	if (fIncludeParents) {
	addParentPackages(enclosingElement, name);
	}
	}
	}
	}

	private void addParentPackages(IJavaElement enclosingElement, String name) {
	IPackageFragmentRoot root= (IPackageFragmentRoot) enclosingElement.getParent();
	int idx= name.lastIndexOf('.');
	while (idx != -1) {
	name= name.substring(0, idx);
	if (fDuplicates \|\| fSet.add(name)) {
	packageList.add(root.getPackageFragment(name));
	}
	idx= name.lastIndexOf('.');
	}
	}
	};
	SearchPattern pattern= SearchPattern.createPattern("*", //$NON-NLS-1$
	IJavaSearchConstants.PACKAGE, IJavaSearchConstants.DECLARATIONS,
	SearchPattern.R_PATTERN_MATCH \| SearchPattern.R_CASE_SENSITIVE);
	new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(), fScope, requestor, monitor);
	} catch (CoreException e) {
	throw new InvocationTargetException(e);
	}
	if (monitor.isCanceled()) {
	throw new InterruptedException();
	}
	}
	};

	try {
	fContext.run(true, true, runnable);
	} catch (InvocationTargetException e) {
	ExceptionHandler.handle(e, JavaUIMessages.PackageSelectionDialog_error_title, JavaUIMessages.TypeSelectionDialog_error3Message);
	return CANCEL;
	} catch (InterruptedException e) {
	// cancelled by user
	return CANCEL;
	}

	if (packageList.isEmpty()) {
	String title= JavaUIMessages.PackageSelectionDialog_nopackages_title;
	String message= JavaUIMessages.PackageSelectionDialog_nopackages_message;
	MessageDialog.openInformation(getShell(), title, message);
	return CANCEL;
	}

	setElements(packageList.toArray());

	return super.open();
	}


	/*
	* @see org.eclipse.jface.window.Window#configureShell(Shell)
	*/
	protected void configureShell(Shell newShell) {
	super.configureShell(newShell);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, IJavaHelpContextIds.OPEN_PACKAGE_DIALOG);
	}

	/*
	* @see Window#close()
	*/
	public boolean close() {
	writeSettings();
	return super.close();
	}

	/*
	* @see org.eclipse.jface.window.Window#createContents(org.eclipse.swt.widgets.Composite)
	*/
	protected Control createContents(Composite parent) {
	Control control= super.createContents(parent);
	readSettings();
	return control;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.window.Window#getInitialSize()
	*/
	protected Point getInitialSize() {
	Point result= super.getInitialSize();
	if (fSize != null) {
	result.x= Math.max(result.x, fSize.x);
	result.y= Math.max(result.y, fSize.y);
	Rectangle display= getShell().getDisplay().getClientArea();
	result.x= Math.min(result.x, display.width);
	result.y= Math.min(result.y, display.height);
	}
	return result;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.window.Window#getInitialLocation(org.eclipse.swt.graphics.Point)
	*/
	protected Point getInitialLocation(Point initialSize) {
	Point result= super.getInitialLocation(initialSize);
	if (fLocation != null) {
	result.x= fLocation.x;
	result.y= fLocation.y;
	Rectangle display= getShell().getDisplay().getClientArea();
	int xe= result.x + initialSize.x;
	if (xe > display.width) {
	result.x-= xe - display.width;
	}
	int ye= result.y + initialSize.y;
	if (ye > display.height) {
	result.y-= ye - display.height;
	}
	}
	return result;
	}



	/**
	* Initializes itself from the dialog settings with the same state
	* as at the previous invocation.
	*/
	private void readSettings() {
	IDialogSettings s= getDialogSettings();
	try {
	int x= s.getInt("x"); //$NON-NLS-1$
	int y= s.getInt("y"); //$NON-NLS-1$
	fLocation= new Point(x, y);
	int width= s.getInt("width"); //$NON-NLS-1$
	int height= s.getInt("height"); //$NON-NLS-1$
	fSize= new Point(width, height);

	} catch (NumberFormatException e) {
	fLocation= null;
	fSize= null;
	}
	}

	/**
	* Stores it current configuration in the dialog store.
	*/
	private void writeSettings() {
	IDialogSettings s= getDialogSettings();

	Point location= getShell().getLocation();
	s.put("x", location.x); //$NON-NLS-1$
	s.put("y", location.y); //$NON-NLS-1$

	Point size= getShell().getSize();
	s.put("width", size.x); //$NON-NLS-1$
	s.put("height", size.y); //$NON-NLS-1$
	}

	/**
	* Returns the dialog settings object used to share state
	* between several find/replace dialogs.
	*
	* @return the dialog settings to be used
	*/
	private IDialogSettings getDialogSettings() {
	IDialogSettings settings= JavaPlugin.getDefault().getDialogSettings();
	String sectionName= getClass().getName();
	IDialogSettings subSettings= settings.getSection(sectionName);
	if (subSettings == null)
	subSettings= settings.addNewSection(sectionName);
	return subSettings;
	}



	}