org.eclipse.search/search/org/eclipse/search/internal/ui/text/TextSearchPage.java - platform/eclipse.platform.text - Git at Google

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved.
  */
 package org.eclipse.search.internal.ui.text;

 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.StringReader;
 import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;

 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IAdaptable;

 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.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Combo;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;

 import org.eclipse.jface.dialogs.DialogPage;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.dialogs.ProgressMonitorDialog;
 import org.eclipse.jface.operation.IRunnableContext;
 import org.eclipse.jface.text.ITextSelection;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;

 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.IFileEditorInput;
 import org.eclipse.ui.help.WorkbenchHelp;
 import org.eclipse.ui.model.IWorkbenchAdapter;

 import org.eclipse.search.ui.ISearchPage;
 import org.eclipse.search.ui.ISearchPageContainer;
 import org.eclipse.search.ui.ISearchResultViewEntry;
 import org.eclipse.search.ui.IWorkingSet;
 import org.eclipse.search.ui.SearchUI;

 import org.eclipse.search.internal.core.text.TextSearchScope;
 import org.eclipse.search.internal.ui.ISearchHelpContextIds;
 import org.eclipse.search.internal.ui.SearchMessages;
 import org.eclipse.search.internal.ui.SearchPlugin;
 import org.eclipse.search.internal.ui.util.ExceptionHandler;
 import org.eclipse.search.internal.ui.util.FileTypeEditor;
 import org.eclipse.search.internal.ui.util.RowLayouter;
 import org.eclipse.search.internal.ui.util.SWTUtil;

 public class TextSearchPage extends DialogPage implements ISearchPage {

 	public static final String EXTENSION_POINT_ID= "org.eclipse.search.internal.ui.text.TextSearchPage"; //$NON-NLS-1$

 	// Dialog store id constants
 	private final static String PAGE_NAME= "TextSearchPage"; //$NON-NLS-1$
 	private final static String STORE_CASE_SENSITIVE= PAGE_NAME + "CASE_SENSITIVE"; //$NON-NLS-1$

 	private static List fgPreviousSearchPatterns= new ArrayList(20);

 	private IDialogSettings fDialogSettings;
 	private boolean fFirstTime= true;
 	private boolean fIsCaseSensitive;

 	private Combo fPattern;
 	private Button fIgnoreCase;
 	private Combo fExtensions;

 	private ISearchPageContainer fContainer;
 	private FileTypeEditor fFileTypeEditor;


 	private static class SearchPatternData {
 		boolean	ignoreCase;
 		String		pattern;
 		Set			extensions;
 		int		scope;
 		IWorkingSet	workingSet;

 		public SearchPatternData(String pattern, boolean ignoreCase, Set extensions, int scope, IWorkingSet workingSet) {
 			this.ignoreCase= ignoreCase;
 			this.pattern= pattern;
 			this.extensions= extensions;
 			this.scope= scope;
 			this.workingSet= workingSet;
 		}
 	}
 	//---- Action Handling ------------------------------------------------

 	public boolean performAction() {

 		SearchUI.activateSearchResultView();

 		SearchPatternData patternData= getPatternData();
 		if (patternData.pattern == null || patternData.pattern.length() == 0)
 			return true;

 		// Setup search scope
 		TextSearchScope scope= null;
 		switch (getContainer().getSelectedScope()) {
 			case ISearchPageContainer.WORKSPACE_SCOPE:
 				scope= TextSearchScope.newWorkspaceScope();
 				break;
 			case ISearchPageContainer.SELECTION_SCOPE:
 				scope= getSelectedResourcesScope();
 				break;
 			case ISearchPageContainer.WORKING_SET_SCOPE:
 				IWorkingSet workingSet= getContainer().getSelectedWorkingSet();
 				String desc= SearchMessages.getFormattedString("WorkingSetScope", workingSet.getName()); //$NON-NLS-1$
 				scope= new TextSearchScope(desc, workingSet.getResources());
 		}
 		scope.addExtensions(patternData.extensions);

 		TextSearchResultCollector collector= new TextSearchResultCollector();

 		TextSearchOperation op= new TextSearchOperation(
 			SearchPlugin.getWorkspace(),
 			patternData.pattern,
 			getSearchOptions(),
 			scope,
 			collector);

 		IRunnableContext context=  null;
 		context= getContainer().getRunnableContext();

 		Shell shell= fPattern.getShell();
 		if (context == null)
 			context= new ProgressMonitorDialog(shell);

 		try {
 			context.run(true, true, op);
 		} catch (InvocationTargetException ex) {
 			ExceptionHandler.handle(ex, SearchMessages.getString("Search.Error.search.title"),SearchMessages.getString("Search.Error.search.message")); //$NON-NLS-2$ //$NON-NLS-1$
 			return false;
 		} catch (InterruptedException e) {
 			return false;
 		}
 		return true;
 	}

 	private String getPattern() {
 		return fPattern.getText();
 	}

 	/**
 	 * Return search pattern data and update previous searches.
 	 * An existing entry will be updated.
 	 */
 	private SearchPatternData getPatternData() {
 		String pattern= getPattern();
 		SearchPatternData match= null;
 		int i= 0;
 		int size= fgPreviousSearchPatterns.size();
 		while (match == null && i < size) {
 			match= (SearchPatternData) fgPreviousSearchPatterns.get(i);
 			i++;
 			if (!pattern.equals(match.pattern))
 				match= null;
 		};
 		if (match == null) {
 			match= new SearchPatternData(
 						pattern,
 						ignoreCase(),
 						getExtensions(),
 						getContainer().getSelectedScope(),
 						getContainer().getSelectedWorkingSet());
 			fgPreviousSearchPatterns.add(match);
 		}
 		else {
 			match.ignoreCase= ignoreCase();
 			match.extensions= getExtensions();
 			match.scope= getContainer().getSelectedScope();
 			match.workingSet= getContainer().getSelectedWorkingSet();
 		};
 		return match;
 	}

 	private String[] getPreviousExtensions() {
 		List extensions= new ArrayList(fgPreviousSearchPatterns.size());
 		for (int i= fgPreviousSearchPatterns.size() -1 ; i >= 0; i--) {
 			SearchPatternData data= (SearchPatternData)fgPreviousSearchPatterns.get(i);
 			String text= FileTypeEditor.typesToString(data.extensions);
 			if (!extensions.contains(text))
 				extensions.add(text);
 		}
 		return (String[])extensions.toArray(new String[extensions.size()]);
 	}

 	private String[] getPreviousSearchPatterns() {
 		int size= fgPreviousSearchPatterns.size();
 		String [] patterns= new String[size];
 		for (int i= 0; i < size; i++)
 			patterns[i]= ((SearchPatternData) fgPreviousSearchPatterns.get(size - 1 - i)).pattern;
 		return patterns;
 	}

 	private String getSearchOptions() {
 		StringBuffer result= new StringBuffer();
 		if (!ignoreCase())
 			result.append("i"); //$NON-NLS-1$
 		return result.toString();
 	}

 	private Display getTargetDisplay() {
 		return fPattern.getDisplay();
 	}

 	private Set getExtensions() {
 		return fFileTypeEditor.getFileTypes();
 	}

 	private boolean ignoreCase() {
 		return fIgnoreCase.getSelection();
 	}

 	/*
 	 * Implements method from IDialogPage
 	 */
 	public void setVisible(boolean visible) {
 		if (visible && fPattern != null) {
 			if (fFirstTime) {
 				fFirstTime= false;
 				// Set item and text here to prevent page from resizing
 				fPattern.setItems(getPreviousSearchPatterns());
 				fExtensions.setItems(getPreviousExtensions());
 				initializePatternControl();
 			}
 			fPattern.setFocus();
 			getContainer().setPerformActionEnabled(fPattern.getText().length() > 0 && getContainer().hasValidScope());
 		}
 		super.setVisible(visible);
 	}

 	//---- Widget creation ------------------------------------------------

 	/**
 	 * Creates the page's content.
 	 */
 	public void createControl(Composite parent) {
 		readConfiguration();

 		GridLayout layout;
 		GridData gd;
 		Label label;
 		RowLayouter layouter;
 		Composite result= new Composite(parent, SWT.NONE);
 		result.setLayout(new GridLayout());

 		// Search Expression
 		Group group= new Group(result, SWT.NONE);
 		group.setText(SearchMessages.getString("SearchPage.expression.label")); //$NON-NLS-1$
 		layout= new GridLayout();
 		layout.numColumns= 2;
 		group.setLayout(layout);
 		layouter= new RowLayouter(2);
 		layouter.setDefaultSpan();

 		// Pattern combo
 		fPattern= new Combo(group, SWT.SINGLE | SWT.BORDER);
 		// Not done here to prevent page from resizing
 		// fPattern.setItems(getPreviousSearchPatterns());
 		fPattern.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handleWidgetSelected();
 			}
 		});
 		fPattern.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				getContainer().setPerformActionEnabled(getPattern().length() > 0 && getContainer().hasValidScope());
 			}
 		});

 		gd= new GridData(GridData.FILL_HORIZONTAL);
 		gd.widthHint= convertWidthInCharsToPixels(30);
 		fPattern.setLayoutData(gd);

 		layouter.perform( new Control[] { fPattern }, 0);

 		label= new Label(group, SWT.LEFT);
 		label.setText(SearchMessages.getString("SearchPage.expression.pattern")); //$NON-NLS-1$
 		fIgnoreCase= new Button(group, SWT.CHECK);
 		fIgnoreCase.setText(SearchMessages.getString("SearchPage.caseSensitive")); //$NON-NLS-1$
 		gd= new GridData(); gd.horizontalAlignment= gd.END;
 		fIgnoreCase.setLayoutData(gd);
 		layouter.perform( new Control[] {label, fIgnoreCase}, -1);
 		fIgnoreCase.setSelection(!fIsCaseSensitive);
 		fIgnoreCase.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				fIsCaseSensitive= !fIgnoreCase.getSelection();
 				writeConfiguration();
 			}
 		});

 		Control control= makeExtensionEditor(group);
 		layouter.perform( new Control[] { control }, 0);

 		group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		setControl(result);

 		WorkbenchHelp.setHelp(result, ISearchHelpContextIds.TEXT_SEARCH_PAGE);
 	}

 	private void handleWidgetSelected() {
 		if (fPattern.getSelectionIndex() < 0)
 			return;
 		int index= fgPreviousSearchPatterns.size() - 1 - fPattern.getSelectionIndex();
 		SearchPatternData patternData= (SearchPatternData) fgPreviousSearchPatterns.get(index);
 		fIgnoreCase.setSelection(patternData.ignoreCase);
 		fPattern.setText(patternData.pattern);
 		fFileTypeEditor.setFileTypes(patternData.extensions);
 		if (patternData.workingSet != null)
 			getContainer().setSelectedWorkingSet(patternData.workingSet);
 		else
 			getContainer().setSelectedScope(patternData.scope);
 	}

 	private void initializePatternControl() {
 		ISelection selection= getSelection();
 		String text= "";	 //$NON-NLS-1$
 		String extension= null; //$NON-NLS-1$
 		if (selection instanceof ITextSelection) {
 			ITextSelection textSelection= (ITextSelection)getSelection();
 			text= textSelection.getText();
 		} else {
 			IResource resource= null;
 			Object item= null;
 			if (selection instanceof IStructuredSelection)
 				item= ((IStructuredSelection)selection).getFirstElement();
 			if (item instanceof IResource) {
 				resource= (IResource)item;
 				text= resource.getName();
 			}
 			else if (item instanceof ISearchResultViewEntry) {
 				IMarker marker= (IMarker)((ISearchResultViewEntry)item).getSelectedMarker();
 				resource= marker.getResource();
 				try {
 					text= (String)marker.getAttribute(SearchUI.LINE);
 				} catch (CoreException ex) {
 					ExceptionHandler.handle(ex, SearchMessages.getString("Search.Error.markerAttributeAccess.title"), SearchMessages.getString("Search.Error.markerAttributeAccess.message")); //$NON-NLS-2$ //$NON-NLS-1$
 					text= ""; //$NON-NLS-1$
 				}
 			} else if (item instanceof IAdaptable) {
 				Object adapter= ((IAdaptable)item).getAdapter(IWorkbenchAdapter.class);
 				if (adapter instanceof IWorkbenchAdapter)
 					text= ((IWorkbenchAdapter)adapter).getLabel(item);

 				adapter= ((IAdaptable)item).getAdapter(IResource.class);
 				if (adapter instanceof IResource) {
 					resource= (IResource)adapter;
 					if (text == null)	// keep text, if provided by workbench adapter
 						text= resource.getName();
 				}
 			}
 			if (resource instanceof IFile ) {
 				extension= resource.getFileExtension();
 				if (extension == null)
 					extension= resource.getName();
 				else
 					extension= "*." + extension; //$NON-NLS-1$
 			}
 			else
 				extension= "*"; //$NON-NLS-1$
 		}
 		fPattern.setText(insertEscapeChars(text));

 		if (getPreviousExtensions().length > 0)
 			fExtensions.setText(getPreviousExtensions()[0]);
 		else {
 			if (extension == null)
 				extension= getExtensionFromEditor();
 			if (extension != null)
 				fExtensions.setText(extension);
 		}
 	}

 	private String insertEscapeChars(String text) {
 		if (text == null || text.equals("")) //$NON-NLS-1$
 			return ""; //$NON-NLS-1$
 		StringBuffer sbIn= new StringBuffer(text);
 		BufferedReader reader= new BufferedReader(new StringReader(text));
 		int lengthOfFirstLine= 0;
 		try {
 			lengthOfFirstLine= reader.readLine().length();
 		} catch (IOException ex) {
 			return ""; //$NON-NLS-1$
 		}
 		StringBuffer sbOut= new StringBuffer(lengthOfFirstLine + 5);
 		int i= 0;
 		while (i < lengthOfFirstLine) {
 			char ch= sbIn.charAt(i);
 			if (ch == '*' || ch == '?' || ch == '\\')
 				sbOut.append("\\"); //$NON-NLS-1$
 			sbOut.append(ch);
 			i= i+1;
 		};
 		return sbOut.toString();
 	}

 	private String getExtensionFromEditor() {
 		IEditorPart ep= SearchPlugin.getActivePage().getActiveEditor();
 		if (ep != null) {
 			Object elem= ep.getEditorInput();
 			if (elem instanceof IFileEditorInput) {
 				String extension= ((IFileEditorInput)elem).getFile().getFileExtension();
 				if (extension == null)
 					return ((IFileEditorInput)elem).getFile().getName();
 				else
 					return "*." + extension; //$NON-NLS-1$
 			}
 		}
 		return null;
 	}

 	private Composite makeExtensionEditor(Composite parent) {
 		Composite result= new Composite(parent, SWT.NONE);
 		GridLayout layout= new GridLayout();
 		layout.marginWidth= 0; layout.marginHeight= 0;
 		layout.numColumns= 3;
 		result.setLayout(layout);

 		Label label= new Label(result, SWT.LEFT);
 		label.setText(SearchMessages.getString("SearchPage.extensions")); //$NON-NLS-1$

 //		fExtensions= new Text(result, SWT.LEFT | SWT.BORDER);
 		fExtensions= new Combo(result, SWT.SINGLE | SWT.BORDER);
 //		fExtensions.addSelectionListener(new SelectionAdapter() {
 //			public void widgetSelected(SelectionEvent e) {
 //				handleWidgetSelected();
 //			}
 //		});


 		GridData gd= new GridData(GridData.FILL_HORIZONTAL);
 		gd.widthHint= convertWidthInCharsToPixels(30);
 		fExtensions.setLayoutData(gd);

 		Button button= new Button(result, SWT.PUSH);
 		button.setText(SearchMessages.getString("SearchPage.browse")); //$NON-NLS-1$
 		button.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
 		SWTUtil.setButtonDimensionHint(button);

 		fFileTypeEditor= new FileTypeEditor(
 			SearchPlugin.getDefault().getWorkbench().getEditorRegistry(),
 			fExtensions, button);

 		return result;
 	}

 	public boolean isValid() {
 		return true;
 	}

 	/**
 	 * Sets the search page's container.
 	 */
 	public void setContainer(ISearchPageContainer container) {
 		fContainer= container;
 	}

 	/**
 	 * Returns the search page's container.
 	 */
 	private ISearchPageContainer getContainer() {
 		return fContainer;
 	}

 	/**
 	 * Returns the current active selection.
 	 */
 	private ISelection getSelection() {
 		return fContainer.getSelection();
 	}

 	private TextSearchScope getSelectedResourcesScope() {
 		TextSearchScope scope= new TextSearchScope(SearchMessages.getString("SelectionScope")); //$NON-NLS-1$
 		if (getSelection() instanceof IStructuredSelection && !getSelection().isEmpty()) {
 			Iterator iter= ((IStructuredSelection)getSelection()).iterator();
 			while (iter.hasNext()) {
 				Object selection= iter.next();

 				//Unpack search result entry
 				if (selection instanceof ISearchResultViewEntry)
 					selection= ((ISearchResultViewEntry)selection).getGroupByKey();

 				if (selection instanceof IResource)
 					scope.add((IResource)selection);
 				else if (selection instanceof IAdaptable) {
 					IResource resource= (IResource)((IAdaptable)selection).getAdapter(IResource.class);
 					if (resource != null)
 						scope.add(resource);
 				}
 			}
 		}
 		return scope;
 	}

 	//--------------- Configuration handling --------------

 	/**
 	 * Returns the page settings for this Java search page.
 	 *
 	 * @return the page settings to be used
 	 */
 	private IDialogSettings getDialogSettings() {
 		IDialogSettings settings= SearchPlugin.getDefault().getDialogSettings();
 		fDialogSettings= settings.getSection(PAGE_NAME);
 		if (fDialogSettings == null)
 			fDialogSettings= settings.addNewSection(PAGE_NAME);
 		return fDialogSettings;
 	}

 	/**
 	 * Initializes itself from the stored page settings.
 	 */
 	private void readConfiguration() {
 		IDialogSettings s= getDialogSettings();
 		fIsCaseSensitive= s.getBoolean(STORE_CASE_SENSITIVE);
 	}

 	/**
 	 * Stores it current configuration in the dialog store.
 	 */
 	private void writeConfiguration() {
 		IDialogSettings s= getDialogSettings();
 		s.put(STORE_CASE_SENSITIVE, fIsCaseSensitive);
 	}
 }
	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved.
	*/
	package org.eclipse.search.internal.ui.text;

	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.StringReader;
	import java.lang.reflect.InvocationTargetException;
	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Set;

	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IMarker;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IAdaptable;

	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.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Combo;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;

	import org.eclipse.jface.dialogs.DialogPage;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.dialogs.ProgressMonitorDialog;
	import org.eclipse.jface.operation.IRunnableContext;
	import org.eclipse.jface.text.ITextSelection;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.IStructuredSelection;

	import org.eclipse.ui.IEditorPart;
	import org.eclipse.ui.IFileEditorInput;
	import org.eclipse.ui.help.WorkbenchHelp;
	import org.eclipse.ui.model.IWorkbenchAdapter;

	import org.eclipse.search.ui.ISearchPage;
	import org.eclipse.search.ui.ISearchPageContainer;
	import org.eclipse.search.ui.ISearchResultViewEntry;
	import org.eclipse.search.ui.IWorkingSet;
	import org.eclipse.search.ui.SearchUI;

	import org.eclipse.search.internal.core.text.TextSearchScope;
	import org.eclipse.search.internal.ui.ISearchHelpContextIds;
	import org.eclipse.search.internal.ui.SearchMessages;
	import org.eclipse.search.internal.ui.SearchPlugin;
	import org.eclipse.search.internal.ui.util.ExceptionHandler;
	import org.eclipse.search.internal.ui.util.FileTypeEditor;
	import org.eclipse.search.internal.ui.util.RowLayouter;
	import org.eclipse.search.internal.ui.util.SWTUtil;

	public class TextSearchPage extends DialogPage implements ISearchPage {

	public static final String EXTENSION_POINT_ID= "org.eclipse.search.internal.ui.text.TextSearchPage"; //$NON-NLS-1$

	// Dialog store id constants
	private final static String PAGE_NAME= "TextSearchPage"; //$NON-NLS-1$
	private final static String STORE_CASE_SENSITIVE= PAGE_NAME + "CASE_SENSITIVE"; //$NON-NLS-1$

	private static List fgPreviousSearchPatterns= new ArrayList(20);

	private IDialogSettings fDialogSettings;
	private boolean fFirstTime= true;
	private boolean fIsCaseSensitive;

	private Combo fPattern;
	private Button fIgnoreCase;
	private Combo fExtensions;

	private ISearchPageContainer fContainer;
	private FileTypeEditor fFileTypeEditor;


	private static class SearchPatternData {
	boolean ignoreCase;
	String pattern;
	Set extensions;
	int scope;
	IWorkingSet workingSet;

	public SearchPatternData(String pattern, boolean ignoreCase, Set extensions, int scope, IWorkingSet workingSet) {
	this.ignoreCase= ignoreCase;
	this.pattern= pattern;
	this.extensions= extensions;
	this.scope= scope;
	this.workingSet= workingSet;
	}
	}
	//---- Action Handling ------------------------------------------------

	public boolean performAction() {

	SearchUI.activateSearchResultView();

	SearchPatternData patternData= getPatternData();
	if (patternData.pattern == null \|\| patternData.pattern.length() == 0)
	return true;

	// Setup search scope
	TextSearchScope scope= null;
	switch (getContainer().getSelectedScope()) {
	case ISearchPageContainer.WORKSPACE_SCOPE:
	scope= TextSearchScope.newWorkspaceScope();
	break;
	case ISearchPageContainer.SELECTION_SCOPE:
	scope= getSelectedResourcesScope();
	break;
	case ISearchPageContainer.WORKING_SET_SCOPE:
	IWorkingSet workingSet= getContainer().getSelectedWorkingSet();
	String desc= SearchMessages.getFormattedString("WorkingSetScope", workingSet.getName()); //$NON-NLS-1$
	scope= new TextSearchScope(desc, workingSet.getResources());
	}
	scope.addExtensions(patternData.extensions);

	TextSearchResultCollector collector= new TextSearchResultCollector();

	TextSearchOperation op= new TextSearchOperation(
	SearchPlugin.getWorkspace(),
	patternData.pattern,
	getSearchOptions(),
	scope,
	collector);

	IRunnableContext context= null;
	context= getContainer().getRunnableContext();

	Shell shell= fPattern.getShell();
	if (context == null)
	context= new ProgressMonitorDialog(shell);

	try {
	context.run(true, true, op);
	} catch (InvocationTargetException ex) {
	ExceptionHandler.handle(ex, SearchMessages.getString("Search.Error.search.title"),SearchMessages.getString("Search.Error.search.message")); //$NON-NLS-2$ //$NON-NLS-1$
	return false;
	} catch (InterruptedException e) {
	return false;
	}
	return true;
	}

	private String getPattern() {
	return fPattern.getText();
	}

	/**
	* Return search pattern data and update previous searches.
	* An existing entry will be updated.
	*/
	private SearchPatternData getPatternData() {
	String pattern= getPattern();
	SearchPatternData match= null;
	int i= 0;
	int size= fgPreviousSearchPatterns.size();
	while (match == null && i < size) {
	match= (SearchPatternData) fgPreviousSearchPatterns.get(i);
	i++;
	if (!pattern.equals(match.pattern))
	match= null;
	};
	if (match == null) {
	match= new SearchPatternData(
	pattern,
	ignoreCase(),
	getExtensions(),
	getContainer().getSelectedScope(),
	getContainer().getSelectedWorkingSet());
	fgPreviousSearchPatterns.add(match);
	}
	else {
	match.ignoreCase= ignoreCase();
	match.extensions= getExtensions();
	match.scope= getContainer().getSelectedScope();
	match.workingSet= getContainer().getSelectedWorkingSet();
	};
	return match;
	}

	private String[] getPreviousExtensions() {
	List extensions= new ArrayList(fgPreviousSearchPatterns.size());
	for (int i= fgPreviousSearchPatterns.size() -1 ; i >= 0; i--) {
	SearchPatternData data= (SearchPatternData)fgPreviousSearchPatterns.get(i);
	String text= FileTypeEditor.typesToString(data.extensions);
	if (!extensions.contains(text))
	extensions.add(text);
	}
	return (String[])extensions.toArray(new String[extensions.size()]);
	}

	private String[] getPreviousSearchPatterns() {
	int size= fgPreviousSearchPatterns.size();
	String [] patterns= new String[size];
	for (int i= 0; i < size; i++)
	patterns[i]= ((SearchPatternData) fgPreviousSearchPatterns.get(size - 1 - i)).pattern;
	return patterns;
	}

	private String getSearchOptions() {
	StringBuffer result= new StringBuffer();
	if (!ignoreCase())
	result.append("i"); //$NON-NLS-1$
	return result.toString();
	}

	private Display getTargetDisplay() {
	return fPattern.getDisplay();
	}

	private Set getExtensions() {
	return fFileTypeEditor.getFileTypes();
	}

	private boolean ignoreCase() {
	return fIgnoreCase.getSelection();
	}

	/*
	* Implements method from IDialogPage
	*/
	public void setVisible(boolean visible) {
	if (visible && fPattern != null) {
	if (fFirstTime) {
	fFirstTime= false;
	// Set item and text here to prevent page from resizing
	fPattern.setItems(getPreviousSearchPatterns());
	fExtensions.setItems(getPreviousExtensions());
	initializePatternControl();
	}
	fPattern.setFocus();
	getContainer().setPerformActionEnabled(fPattern.getText().length() > 0 && getContainer().hasValidScope());
	}
	super.setVisible(visible);
	}

	//---- Widget creation ------------------------------------------------

	/**
	* Creates the page's content.
	*/
	public void createControl(Composite parent) {
	readConfiguration();

	GridLayout layout;
	GridData gd;
	Label label;
	RowLayouter layouter;
	Composite result= new Composite(parent, SWT.NONE);
	result.setLayout(new GridLayout());

	// Search Expression
	Group group= new Group(result, SWT.NONE);
	group.setText(SearchMessages.getString("SearchPage.expression.label")); //$NON-NLS-1$
	layout= new GridLayout();
	layout.numColumns= 2;
	group.setLayout(layout);
	layouter= new RowLayouter(2);
	layouter.setDefaultSpan();

	// Pattern combo
	fPattern= new Combo(group, SWT.SINGLE \| SWT.BORDER);
	// Not done here to prevent page from resizing
	// fPattern.setItems(getPreviousSearchPatterns());
	fPattern.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleWidgetSelected();
	}
	});
	fPattern.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	getContainer().setPerformActionEnabled(getPattern().length() > 0 && getContainer().hasValidScope());
	}
	});

	gd= new GridData(GridData.FILL_HORIZONTAL);
	gd.widthHint= convertWidthInCharsToPixels(30);
	fPattern.setLayoutData(gd);

	layouter.perform( new Control[] { fPattern }, 0);

	label= new Label(group, SWT.LEFT);
	label.setText(SearchMessages.getString("SearchPage.expression.pattern")); //$NON-NLS-1$
	fIgnoreCase= new Button(group, SWT.CHECK);
	fIgnoreCase.setText(SearchMessages.getString("SearchPage.caseSensitive")); //$NON-NLS-1$
	gd= new GridData(); gd.horizontalAlignment= gd.END;
	fIgnoreCase.setLayoutData(gd);
	layouter.perform( new Control[] {label, fIgnoreCase}, -1);
	fIgnoreCase.setSelection(!fIsCaseSensitive);
	fIgnoreCase.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	fIsCaseSensitive= !fIgnoreCase.getSelection();
	writeConfiguration();
	}
	});

	Control control= makeExtensionEditor(group);
	layouter.perform( new Control[] { control }, 0);

	group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	setControl(result);

	WorkbenchHelp.setHelp(result, ISearchHelpContextIds.TEXT_SEARCH_PAGE);
	}

	private void handleWidgetSelected() {
	if (fPattern.getSelectionIndex() < 0)
	return;
	int index= fgPreviousSearchPatterns.size() - 1 - fPattern.getSelectionIndex();
	SearchPatternData patternData= (SearchPatternData) fgPreviousSearchPatterns.get(index);
	fIgnoreCase.setSelection(patternData.ignoreCase);
	fPattern.setText(patternData.pattern);
	fFileTypeEditor.setFileTypes(patternData.extensions);
	if (patternData.workingSet != null)
	getContainer().setSelectedWorkingSet(patternData.workingSet);
	else
	getContainer().setSelectedScope(patternData.scope);
	}

	private void initializePatternControl() {
	ISelection selection= getSelection();
	String text= ""; //$NON-NLS-1$
	String extension= null; //$NON-NLS-1$
	if (selection instanceof ITextSelection) {
	ITextSelection textSelection= (ITextSelection)getSelection();
	text= textSelection.getText();
	} else {
	IResource resource= null;
	Object item= null;
	if (selection instanceof IStructuredSelection)
	item= ((IStructuredSelection)selection).getFirstElement();
	if (item instanceof IResource) {
	resource= (IResource)item;
	text= resource.getName();
	}
	else if (item instanceof ISearchResultViewEntry) {
	IMarker marker= (IMarker)((ISearchResultViewEntry)item).getSelectedMarker();
	resource= marker.getResource();
	try {
	text= (String)marker.getAttribute(SearchUI.LINE);
	} catch (CoreException ex) {
	ExceptionHandler.handle(ex, SearchMessages.getString("Search.Error.markerAttributeAccess.title"), SearchMessages.getString("Search.Error.markerAttributeAccess.message")); //$NON-NLS-2$ //$NON-NLS-1$
	text= ""; //$NON-NLS-1$
	}
	} else if (item instanceof IAdaptable) {
	Object adapter= ((IAdaptable)item).getAdapter(IWorkbenchAdapter.class);
	if (adapter instanceof IWorkbenchAdapter)
	text= ((IWorkbenchAdapter)adapter).getLabel(item);

	adapter= ((IAdaptable)item).getAdapter(IResource.class);
	if (adapter instanceof IResource) {
	resource= (IResource)adapter;
	if (text == null) // keep text, if provided by workbench adapter
	text= resource.getName();
	}
	}
	if (resource instanceof IFile ) {
	extension= resource.getFileExtension();
	if (extension == null)
	extension= resource.getName();
	else
	extension= "*." + extension; //$NON-NLS-1$
	}
	else
	extension= "*"; //$NON-NLS-1$
	}
	fPattern.setText(insertEscapeChars(text));

	if (getPreviousExtensions().length > 0)
	fExtensions.setText(getPreviousExtensions()[0]);
	else {
	if (extension == null)
	extension= getExtensionFromEditor();
	if (extension != null)
	fExtensions.setText(extension);
	}
	}

	private String insertEscapeChars(String text) {
	if (text == null \|\| text.equals("")) //$NON-NLS-1$
	return ""; //$NON-NLS-1$
	StringBuffer sbIn= new StringBuffer(text);
	BufferedReader reader= new BufferedReader(new StringReader(text));
	int lengthOfFirstLine= 0;
	try {
	lengthOfFirstLine= reader.readLine().length();
	} catch (IOException ex) {
	return ""; //$NON-NLS-1$
	}
	StringBuffer sbOut= new StringBuffer(lengthOfFirstLine + 5);
	int i= 0;
	while (i < lengthOfFirstLine) {
	char ch= sbIn.charAt(i);
	if (ch == '*' \|\| ch == '?' \|\| ch == '\\')
	sbOut.append("\\"); //$NON-NLS-1$
	sbOut.append(ch);
	i= i+1;
	};
	return sbOut.toString();
	}

	private String getExtensionFromEditor() {
	IEditorPart ep= SearchPlugin.getActivePage().getActiveEditor();
	if (ep != null) {
	Object elem= ep.getEditorInput();
	if (elem instanceof IFileEditorInput) {
	String extension= ((IFileEditorInput)elem).getFile().getFileExtension();
	if (extension == null)
	return ((IFileEditorInput)elem).getFile().getName();
	else
	return "*." + extension; //$NON-NLS-1$
	}
	}
	return null;
	}

	private Composite makeExtensionEditor(Composite parent) {
	Composite result= new Composite(parent, SWT.NONE);
	GridLayout layout= new GridLayout();
	layout.marginWidth= 0; layout.marginHeight= 0;
	layout.numColumns= 3;
	result.setLayout(layout);

	Label label= new Label(result, SWT.LEFT);
	label.setText(SearchMessages.getString("SearchPage.extensions")); //$NON-NLS-1$

	// fExtensions= new Text(result, SWT.LEFT \| SWT.BORDER);
	fExtensions= new Combo(result, SWT.SINGLE \| SWT.BORDER);
	// fExtensions.addSelectionListener(new SelectionAdapter() {
	// public void widgetSelected(SelectionEvent e) {
	// handleWidgetSelected();
	// }
	// });


	GridData gd= new GridData(GridData.FILL_HORIZONTAL);
	gd.widthHint= convertWidthInCharsToPixels(30);
	fExtensions.setLayoutData(gd);

	Button button= new Button(result, SWT.PUSH);
	button.setText(SearchMessages.getString("SearchPage.browse")); //$NON-NLS-1$
	button.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
	SWTUtil.setButtonDimensionHint(button);

	fFileTypeEditor= new FileTypeEditor(
	SearchPlugin.getDefault().getWorkbench().getEditorRegistry(),
	fExtensions, button);

	return result;
	}

	public boolean isValid() {
	return true;
	}

	/**
	* Sets the search page's container.
	*/
	public void setContainer(ISearchPageContainer container) {
	fContainer= container;
	}

	/**
	* Returns the search page's container.
	*/
	private ISearchPageContainer getContainer() {
	return fContainer;
	}

	/**
	* Returns the current active selection.
	*/
	private ISelection getSelection() {
	return fContainer.getSelection();
	}

	private TextSearchScope getSelectedResourcesScope() {
	TextSearchScope scope= new TextSearchScope(SearchMessages.getString("SelectionScope")); //$NON-NLS-1$
	if (getSelection() instanceof IStructuredSelection && !getSelection().isEmpty()) {
	Iterator iter= ((IStructuredSelection)getSelection()).iterator();
	while (iter.hasNext()) {
	Object selection= iter.next();

	//Unpack search result entry
	if (selection instanceof ISearchResultViewEntry)
	selection= ((ISearchResultViewEntry)selection).getGroupByKey();

	if (selection instanceof IResource)
	scope.add((IResource)selection);
	else if (selection instanceof IAdaptable) {
	IResource resource= (IResource)((IAdaptable)selection).getAdapter(IResource.class);
	if (resource != null)
	scope.add(resource);
	}
	}
	}
	return scope;
	}

	//--------------- Configuration handling --------------

	/**
	* Returns the page settings for this Java search page.
	*
	* @return the page settings to be used
	*/
	private IDialogSettings getDialogSettings() {
	IDialogSettings settings= SearchPlugin.getDefault().getDialogSettings();
	fDialogSettings= settings.getSection(PAGE_NAME);
	if (fDialogSettings == null)
	fDialogSettings= settings.addNewSection(PAGE_NAME);
	return fDialogSettings;
	}

	/**
	* Initializes itself from the stored page settings.
	*/
	private void readConfiguration() {
	IDialogSettings s= getDialogSettings();
	fIsCaseSensitive= s.getBoolean(STORE_CASE_SENSITIVE);
	}

	/**
	* Stores it current configuration in the dialog store.
	*/
	private void writeConfiguration() {
	IDialogSettings s= getDialogSettings();
	s.put(STORE_CASE_SENSITIVE, fIsCaseSensitive);
	}
	}