debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/preferences/CDebugPreferencePage.java - cdt/org.eclipse.cdt - Git at Google

 /*
  *(c) Copyright QNX Software Systems Ltd. 2002.
  * All Rights Reserved.
  *
  */
 package org.eclipse.cdt.debug.internal.ui.preferences;

 import java.text.MessageFormat;

 import org.eclipse.cdt.debug.core.CDebugCorePlugin;
 import org.eclipse.cdt.debug.core.ICDebugConstants;
 import org.eclipse.cdt.debug.core.cdi.ICDIFormat;
 import org.eclipse.cdt.debug.internal.ui.ICDebugHelpContextIds;
 import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
 import org.eclipse.cdt.debug.ui.ICDebugUIConstants;
 import org.eclipse.cdt.utils.ui.controls.ControlFactory;
 import org.eclipse.debug.ui.IDebugUIConstants;
 import org.eclipse.debug.ui.IDebugView;
 import org.eclipse.jface.preference.FieldEditor;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.IntegerFieldEditor;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.preference.StringFieldEditor;
 import org.eclipse.jface.util.IPropertyChangeListener;
 import org.eclipse.jface.util.PropertyChangeEvent;
 import org.eclipse.jface.viewers.StructuredViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.BusyIndicator;
 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.Label;
 import org.eclipse.ui.IViewPart;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.ui.help.WorkbenchHelp;

 /**
  *
  * Preference page for debug preferences that apply specifically to
  * C/C++ Debugging.
  *
  * @since Oct 3, 2002
  */
 public class CDebugPreferencePage extends PreferencePage implements IWorkbenchPreferencePage
 {
 	// View setting widgets
 	private Button fPathsButton;
 	private Combo fVariableFormatCombo;
 	private Combo fExpressionFormatCombo;
 	private Combo fRegisterFormatCombo;
 	// Disassembly setting widgets
 	private Button fAutoDisassemblyButton;

 	// Maximum number of disassembly instructions to display
 	private IntegerFieldEditor fMaxNumberOfInstructionsText;

 	private static final int NUMBER_OF_DIGITS = 3;

 	// Format constants
 	private static int[] fFormatIds = new int[]{ ICDIFormat.NATURAL, ICDIFormat.HEXADECIMAL, ICDIFormat.DECIMAL };
 	private static String[] fFormatLabels = new String[] { "Natural", "Hexadecimal", "Decimal" };

 	private PropertyChangeListener fPropertyChangeListener;

 	protected class PropertyChangeListener implements IPropertyChangeListener
 	{
 		private boolean fHasStateChanged = false;

 		public void propertyChange( PropertyChangeEvent event )
 		{
 			if ( event.getProperty().equals( ICDebugPreferenceConstants.PREF_SHOW_HEX_VALUES ) )
 			{
 				fHasStateChanged = true;
 			}
 			else if ( event.getProperty().equals( ICDebugPreferenceConstants.PREF_SHOW_CHAR_VALUES ) )
 			{
 				fHasStateChanged = true;
 			}
 		}

 		protected boolean hasStateChanged()
 		{
 			return fHasStateChanged;
 		}
 	}

 	/**
 	 * Constructor for CDebugPreferencePage.
 	 */
 	public CDebugPreferencePage()
 	{
 		super();
 		setPreferenceStore( CDebugUIPlugin.getDefault().getPreferenceStore() );
 		getPreferenceStore().addPropertyChangeListener( getPropertyChangeListener() );
 		setDescription( "General settings for C/C++ Debugging." );
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.preference.PreferencePage#createContents(Composite)
 	 */
 	protected Control createContents( Composite parent )
 	{
 		WorkbenchHelp.setHelp( getControl(), ICDebugHelpContextIds.C_DEBUG_PREFERENCE_PAGE );

 		//The main composite
 		Composite composite = new Composite( parent, SWT.NULL );
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 1;
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		composite.setLayout( layout );
 		GridData data = new GridData();
 		data.verticalAlignment = GridData.FILL;
 		data.horizontalAlignment = GridData.FILL;
 		composite.setLayoutData( data );

 		createSpacer( composite, 1 );
 		createViewSettingPreferences( composite );
 		createSpacer( composite, 1 );
 		createDisassemblySettingPreferences( composite );
 		setValues();

 		return composite;
 	}

 	/**
 	 * Creates composite group and sets the default layout data.
 	 *
 	 * @param parent  the parent of the new composite
 	 * @param numColumns  the number of columns for the new composite
 	 * @param labelText  the text label of the new composite
 	 * @return the newly-created composite
 	 */
 	private Composite createGroupComposite( Composite parent, int numColumns, String labelText )
 	{
 		return ControlFactory.createGroup( parent, labelText, numColumns );
 	}

 	/**
 	 * Set the values of the component widgets based on the
 	 * values in the preference store
 	 */
 	private void setValues()
 	{
 		IPreferenceStore store = getPreferenceStore();

 		fPathsButton.setSelection( store.getBoolean( ICDebugPreferenceConstants.PREF_SHOW_FULL_PATHS ) );
 		fAutoDisassemblyButton.setSelection( CDebugCorePlugin.getDefault().getPluginPreferences().getBoolean( ICDebugConstants.PREF_AUTO_DISASSEMBLY ) );
 		getMaxNumberOfInstructionsText().setStringValue( new Integer( CDebugCorePlugin.getDefault().getPluginPreferences().getInt( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS ) ).toString() );
 		fVariableFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getInt( ICDebugConstants.PREF_DEFAULT_VARIABLE_FORMAT ) ) );
 		fExpressionFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getInt( ICDebugConstants.PREF_DEFAULT_EXPRESSION_FORMAT ) ) );
 		fRegisterFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getInt( ICDebugConstants.PREF_DEFAULT_REGISTER_FORMAT ) ) );
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(IWorkbench)
 	 */
 	public void init( IWorkbench workbench )
 	{
 	}

 	protected PropertyChangeListener getPropertyChangeListener()
 	{
 		if ( fPropertyChangeListener == null )
 		{
 			fPropertyChangeListener = new PropertyChangeListener();
 		}
 		return fPropertyChangeListener;
 	}

 	/**
 	 * Set the default preferences for this page.
 	 */
 	public static void initDefaults(IPreferenceStore store)
 	{
 		store.setDefault( ICDebugPreferenceConstants.PREF_SHOW_HEX_VALUES, false );
 		store.setDefault( ICDebugPreferenceConstants.PREF_SHOW_FULL_PATHS, true );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_AUTO_DISASSEMBLY, false );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS, ICDebugConstants.DEF_NUMBER_OF_INSTRUCTIONS );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_DEFAULT_VARIABLE_FORMAT, ICDIFormat.NATURAL );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_DEFAULT_EXPRESSION_FORMAT, ICDIFormat.NATURAL );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_DEFAULT_REGISTER_FORMAT, ICDIFormat.NATURAL );
 	}

 	/**
 	 * @see DialogPage#dispose()
 	 */
 	public void dispose()
 	{
 		super.dispose();
 		getPreferenceStore().removePropertyChangeListener( getPropertyChangeListener() );
 	}

 	/**
 	 * Create the view setting preferences composite widget
 	 */
 	private void createViewSettingPreferences( Composite parent )
 	{
 		Composite comp = createGroupComposite( parent, 1, "Opened view default settings" );
 		fPathsButton = createCheckButton( comp, "Show full &paths" );
 		Composite formatComposite = ControlFactory.createCompositeEx( comp, 2, 0 );
 		((GridLayout)formatComposite.getLayout()).makeColumnsEqualWidth = true;
 		fVariableFormatCombo = createComboBox( formatComposite, "Default variable format:", fFormatLabels, fFormatLabels[0] );
 		fExpressionFormatCombo = createComboBox( formatComposite, "Default expression format:", fFormatLabels, fFormatLabels[0] );
 		fRegisterFormatCombo = createComboBox( formatComposite, "Default register format:", fFormatLabels, fFormatLabels[0] );
 	}

 	/**
 	 * Create the disassembly setting preferences composite widget
 	 */
 	private void createDisassemblySettingPreferences( Composite parent )
 	{
 		Composite comp = createGroupComposite( parent, 1, "Disassembly options" );
 		fAutoDisassemblyButton = createCheckButton( comp, "Automatically switch to &disassembly mode" );
 		createMaxNumberOfInstructionsField( comp );
 	}

 	private void createMaxNumberOfInstructionsField( Composite parent )
 	{
 		Composite composite = ControlFactory.createComposite( parent, 2 );
 		fMaxNumberOfInstructionsText = new IntegerFieldEditor( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS,
 															   "Maximum number of instructions: ",
 															   composite,
 															   NUMBER_OF_DIGITS );
 		GridData data = (GridData)fMaxNumberOfInstructionsText.getTextControl( composite ).getLayoutData();
 		data.horizontalAlignment = GridData.BEGINNING;
 		data.widthHint = convertWidthInCharsToPixels( NUMBER_OF_DIGITS + 1 );
 		fMaxNumberOfInstructionsText.setPreferencePage( this );
 		fMaxNumberOfInstructionsText.setValidateStrategy( StringFieldEditor.VALIDATE_ON_KEY_STROKE );
 		fMaxNumberOfInstructionsText.setValidRange( ICDebugConstants.MIN_NUMBER_OF_INSTRUCTIONS, ICDebugConstants.MAX_NUMBER_OF_INSTRUCTIONS );
 		String minValue = Integer.toString( ICDebugConstants.MIN_NUMBER_OF_INSTRUCTIONS );
 		String maxValue = Integer.toString( ICDebugConstants.MAX_NUMBER_OF_INSTRUCTIONS );
 		fMaxNumberOfInstructionsText.setErrorMessage( MessageFormat.format( "The valid value range is [{0},{1}].", new String[]{ minValue, maxValue } ) );
 		fMaxNumberOfInstructionsText.load();
 		fMaxNumberOfInstructionsText.setPropertyChangeListener(
 					new IPropertyChangeListener()
 						{
 							public void propertyChange( PropertyChangeEvent event )
 							{
 								if ( event.getProperty().equals( FieldEditor.IS_VALID ) )
 									setValid( getMaxNumberOfInstructionsText().isValid() );
 							}
 						} );
 	}

 	/**
 	 * Creates a button with the given label and sets the default
 	 * configuration data.
 	 */
 	private Button createCheckButton( Composite parent, String label )
 	{
 		Button button = new Button( parent, SWT.CHECK | SWT.LEFT );
 		button.setText( label );
 		// FieldEditor GridData
 		GridData data = new GridData();
 		button.setLayoutData( data );
 		return button;
 	}

 	/**
 	 * Creates a button with the given label and sets the default
 	 * configuration data.
 	 */
 	private Combo createComboBox( Composite parent, String label, String[] items, String selection )
 	{
 		ControlFactory.createLabel( parent, label );
 		Combo combo = ControlFactory.createSelectCombo( parent, items, selection );
 		combo.setLayoutData( new GridData() );
 		return combo;
 	}

 	protected void createSpacer( Composite composite, int columnSpan )
 	{
 		Label label = new Label( composite, SWT.NONE );
 		GridData gd = new GridData();
 		gd.horizontalSpan = columnSpan;
 		label.setLayoutData( gd );
 	}

 	/**
 	 * @see IPreferencePage#performOk()
 	 * Also, notifies interested listeners
 	 */
 	public boolean performOk()
 	{
 		storeValues();
 		if ( getPropertyChangeListener().hasStateChanged() )
 		{
 			refreshViews();
 		}
 		CDebugUIPlugin.getDefault().savePluginPreferences();
 		CDebugCorePlugin.getDefault().savePluginPreferences();
 		return true;
 	}

 	/**
 	 * Refresh the variables and expression views as changes
 	 * have occurred that affects these views.
 	 */
 	private void refreshViews()
 	{
 		BusyIndicator.showWhile( getShell().getDisplay(),
 								 new Runnable()
 									{
 										public void run()
 										{
 											// Refresh interested views
 											IWorkbenchWindow[] windows = CDebugUIPlugin.getDefault().getWorkbench().getWorkbenchWindows();
 											IWorkbenchPage page = null;
 											for ( int i = 0; i < windows.length; i++ )
 											{
 												page = windows[i].getActivePage();
 												if ( page != null )
 												{
 													refreshViews( page, IDebugUIConstants.ID_EXPRESSION_VIEW );
 													refreshViews( page, IDebugUIConstants.ID_VARIABLE_VIEW );
 													refreshViews( page, ICDebugUIConstants.ID_REGISTERS_VIEW );
 												}
 											}
 										}
 									} );
 	}

 	/**
 	 * Refresh all views in the given workbench page with the given view id
 	 */
 	protected void refreshViews( IWorkbenchPage page, String viewID )
 	{
 		IViewPart part = page.findView( viewID );
 		if ( part != null )
 		{
 			IDebugView adapter = (IDebugView)part.getAdapter( IDebugView.class );
 			if ( adapter != null )
 			{
 				Viewer viewer = adapter.getViewer();
 				if ( viewer instanceof StructuredViewer )
 				{
 					((StructuredViewer)viewer).refresh();
 				}
 			}
 		}
 	}

 	/**
 	 * Store the preference values based on the state of the component widgets
 	 */
 	private void storeValues()
 	{
 		IPreferenceStore store = getPreferenceStore();
 		store.setValue( ICDebugPreferenceConstants.PREF_SHOW_FULL_PATHS, fPathsButton.getSelection() );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_AUTO_DISASSEMBLY, fAutoDisassemblyButton.getSelection() );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS, getMaxNumberOfInstructionsText().getIntValue() );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_DEFAULT_VARIABLE_FORMAT, getFormatId( fVariableFormatCombo.getSelectionIndex() ) );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_DEFAULT_EXPRESSION_FORMAT, getFormatId( fExpressionFormatCombo.getSelectionIndex() ) );
 		CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_DEFAULT_REGISTER_FORMAT, getFormatId( fRegisterFormatCombo.getSelectionIndex() ) );
 	}

 	/**
 	 * Sets the default preferences.
 	 * @see PreferencePage#performDefaults()
 	 */
 	protected void performDefaults()
 	{
 		setDefaultValues();
 		super.performDefaults();
 	}

 	private void setDefaultValues()
 	{
 		IPreferenceStore store = getPreferenceStore();
 		fPathsButton.setSelection( store.getDefaultBoolean( ICDebugPreferenceConstants.PREF_SHOW_FULL_PATHS ) );
 		fAutoDisassemblyButton.setSelection( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultBoolean( ICDebugConstants.PREF_AUTO_DISASSEMBLY ) );
 		getMaxNumberOfInstructionsText().setStringValue( new Integer( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultInt( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS ) ).toString() );
 		fVariableFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultInt( ICDebugConstants.PREF_DEFAULT_VARIABLE_FORMAT ) ) );
 		fExpressionFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultInt( ICDebugConstants.PREF_DEFAULT_EXPRESSION_FORMAT ) ) );
 		fRegisterFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultInt( ICDebugConstants.PREF_DEFAULT_REGISTER_FORMAT ) ) );
 	}

 	private static int getFormatId( int index )
 	{
 		return ( index >= 0 && index < fFormatIds.length ) ? fFormatIds[index] : fFormatIds[0];
 	}

 	private static int getFormatIndex( int id )
 	{
 		for ( int i = 0; i < fFormatIds.length; ++i )
 			if ( fFormatIds[i] == id )
 				return i;
 		return -1;
 	}

 	protected IntegerFieldEditor getMaxNumberOfInstructionsText()
 	{
 		return fMaxNumberOfInstructionsText;
 	}
 }
	/*
	*(c) Copyright QNX Software Systems Ltd. 2002.
	* All Rights Reserved.
	*
	*/
	package org.eclipse.cdt.debug.internal.ui.preferences;

	import java.text.MessageFormat;

	import org.eclipse.cdt.debug.core.CDebugCorePlugin;
	import org.eclipse.cdt.debug.core.ICDebugConstants;
	import org.eclipse.cdt.debug.core.cdi.ICDIFormat;
	import org.eclipse.cdt.debug.internal.ui.ICDebugHelpContextIds;
	import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
	import org.eclipse.cdt.debug.ui.ICDebugUIConstants;
	import org.eclipse.cdt.utils.ui.controls.ControlFactory;
	import org.eclipse.debug.ui.IDebugUIConstants;
	import org.eclipse.debug.ui.IDebugView;
	import org.eclipse.jface.preference.FieldEditor;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.IntegerFieldEditor;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.jface.preference.StringFieldEditor;
	import org.eclipse.jface.util.IPropertyChangeListener;
	import org.eclipse.jface.util.PropertyChangeEvent;
	import org.eclipse.jface.viewers.StructuredViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.BusyIndicator;
	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.Label;
	import org.eclipse.ui.IViewPart;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPage;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.IWorkbenchWindow;
	import org.eclipse.ui.help.WorkbenchHelp;

	/**
	*
	* Preference page for debug preferences that apply specifically to
	* C/C++ Debugging.
	*
	* @since Oct 3, 2002
	*/
	public class CDebugPreferencePage extends PreferencePage implements IWorkbenchPreferencePage
	{
	// View setting widgets
	private Button fPathsButton;
	private Combo fVariableFormatCombo;
	private Combo fExpressionFormatCombo;
	private Combo fRegisterFormatCombo;
	// Disassembly setting widgets
	private Button fAutoDisassemblyButton;

	// Maximum number of disassembly instructions to display
	private IntegerFieldEditor fMaxNumberOfInstructionsText;

	private static final int NUMBER_OF_DIGITS = 3;

	// Format constants
	private static int[] fFormatIds = new int[]{ ICDIFormat.NATURAL, ICDIFormat.HEXADECIMAL, ICDIFormat.DECIMAL };
	private static String[] fFormatLabels = new String[] { "Natural", "Hexadecimal", "Decimal" };

	private PropertyChangeListener fPropertyChangeListener;

	protected class PropertyChangeListener implements IPropertyChangeListener
	{
	private boolean fHasStateChanged = false;

	public void propertyChange( PropertyChangeEvent event )
	{
	if ( event.getProperty().equals( ICDebugPreferenceConstants.PREF_SHOW_HEX_VALUES ) )
	{
	fHasStateChanged = true;
	}
	else if ( event.getProperty().equals( ICDebugPreferenceConstants.PREF_SHOW_CHAR_VALUES ) )
	{
	fHasStateChanged = true;
	}
	}

	protected boolean hasStateChanged()
	{
	return fHasStateChanged;
	}
	}

	/**
	* Constructor for CDebugPreferencePage.
	*/
	public CDebugPreferencePage()
	{
	super();
	setPreferenceStore( CDebugUIPlugin.getDefault().getPreferenceStore() );
	getPreferenceStore().addPropertyChangeListener( getPropertyChangeListener() );
	setDescription( "General settings for C/C++ Debugging." );
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.preference.PreferencePage#createContents(Composite)
	*/
	protected Control createContents( Composite parent )
	{
	WorkbenchHelp.setHelp( getControl(), ICDebugHelpContextIds.C_DEBUG_PREFERENCE_PAGE );

	//The main composite
	Composite composite = new Composite( parent, SWT.NULL );
	GridLayout layout = new GridLayout();
	layout.numColumns = 1;
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	composite.setLayout( layout );
	GridData data = new GridData();
	data.verticalAlignment = GridData.FILL;
	data.horizontalAlignment = GridData.FILL;
	composite.setLayoutData( data );

	createSpacer( composite, 1 );
	createViewSettingPreferences( composite );
	createSpacer( composite, 1 );
	createDisassemblySettingPreferences( composite );
	setValues();

	return composite;
	}

	/**
	* Creates composite group and sets the default layout data.
	*
	* @param parent the parent of the new composite
	* @param numColumns the number of columns for the new composite
	* @param labelText the text label of the new composite
	* @return the newly-created composite
	*/
	private Composite createGroupComposite( Composite parent, int numColumns, String labelText )
	{
	return ControlFactory.createGroup( parent, labelText, numColumns );
	}

	/**
	* Set the values of the component widgets based on the
	* values in the preference store
	*/
	private void setValues()
	{
	IPreferenceStore store = getPreferenceStore();

	fPathsButton.setSelection( store.getBoolean( ICDebugPreferenceConstants.PREF_SHOW_FULL_PATHS ) );
	fAutoDisassemblyButton.setSelection( CDebugCorePlugin.getDefault().getPluginPreferences().getBoolean( ICDebugConstants.PREF_AUTO_DISASSEMBLY ) );
	getMaxNumberOfInstructionsText().setStringValue( new Integer( CDebugCorePlugin.getDefault().getPluginPreferences().getInt( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS ) ).toString() );
	fVariableFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getInt( ICDebugConstants.PREF_DEFAULT_VARIABLE_FORMAT ) ) );
	fExpressionFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getInt( ICDebugConstants.PREF_DEFAULT_EXPRESSION_FORMAT ) ) );
	fRegisterFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getInt( ICDebugConstants.PREF_DEFAULT_REGISTER_FORMAT ) ) );
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IWorkbenchPreferencePage#init(IWorkbench)
	*/
	public void init( IWorkbench workbench )
	{
	}

	protected PropertyChangeListener getPropertyChangeListener()
	{
	if ( fPropertyChangeListener == null )
	{
	fPropertyChangeListener = new PropertyChangeListener();
	}
	return fPropertyChangeListener;
	}

	/**
	* Set the default preferences for this page.
	*/
	public static void initDefaults(IPreferenceStore store)
	{
	store.setDefault( ICDebugPreferenceConstants.PREF_SHOW_HEX_VALUES, false );
	store.setDefault( ICDebugPreferenceConstants.PREF_SHOW_FULL_PATHS, true );
	CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_AUTO_DISASSEMBLY, false );
	CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS, ICDebugConstants.DEF_NUMBER_OF_INSTRUCTIONS );
	CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_DEFAULT_VARIABLE_FORMAT, ICDIFormat.NATURAL );
	CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_DEFAULT_EXPRESSION_FORMAT, ICDIFormat.NATURAL );
	CDebugCorePlugin.getDefault().getPluginPreferences().setDefault( ICDebugConstants.PREF_DEFAULT_REGISTER_FORMAT, ICDIFormat.NATURAL );
	}

	/**
	* @see DialogPage#dispose()
	*/
	public void dispose()
	{
	super.dispose();
	getPreferenceStore().removePropertyChangeListener( getPropertyChangeListener() );
	}

	/**
	* Create the view setting preferences composite widget
	*/
	private void createViewSettingPreferences( Composite parent )
	{
	Composite comp = createGroupComposite( parent, 1, "Opened view default settings" );
	fPathsButton = createCheckButton( comp, "Show full &paths" );
	Composite formatComposite = ControlFactory.createCompositeEx( comp, 2, 0 );
	((GridLayout)formatComposite.getLayout()).makeColumnsEqualWidth = true;
	fVariableFormatCombo = createComboBox( formatComposite, "Default variable format:", fFormatLabels, fFormatLabels[0] );
	fExpressionFormatCombo = createComboBox( formatComposite, "Default expression format:", fFormatLabels, fFormatLabels[0] );
	fRegisterFormatCombo = createComboBox( formatComposite, "Default register format:", fFormatLabels, fFormatLabels[0] );
	}

	/**
	* Create the disassembly setting preferences composite widget
	*/
	private void createDisassemblySettingPreferences( Composite parent )
	{
	Composite comp = createGroupComposite( parent, 1, "Disassembly options" );
	fAutoDisassemblyButton = createCheckButton( comp, "Automatically switch to &disassembly mode" );
	createMaxNumberOfInstructionsField( comp );
	}

	private void createMaxNumberOfInstructionsField( Composite parent )
	{
	Composite composite = ControlFactory.createComposite( parent, 2 );
	fMaxNumberOfInstructionsText = new IntegerFieldEditor( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS,
	"Maximum number of instructions: ",
	composite,
	NUMBER_OF_DIGITS );
	GridData data = (GridData)fMaxNumberOfInstructionsText.getTextControl( composite ).getLayoutData();
	data.horizontalAlignment = GridData.BEGINNING;
	data.widthHint = convertWidthInCharsToPixels( NUMBER_OF_DIGITS + 1 );
	fMaxNumberOfInstructionsText.setPreferencePage( this );
	fMaxNumberOfInstructionsText.setValidateStrategy( StringFieldEditor.VALIDATE_ON_KEY_STROKE );
	fMaxNumberOfInstructionsText.setValidRange( ICDebugConstants.MIN_NUMBER_OF_INSTRUCTIONS, ICDebugConstants.MAX_NUMBER_OF_INSTRUCTIONS );
	String minValue = Integer.toString( ICDebugConstants.MIN_NUMBER_OF_INSTRUCTIONS );
	String maxValue = Integer.toString( ICDebugConstants.MAX_NUMBER_OF_INSTRUCTIONS );
	fMaxNumberOfInstructionsText.setErrorMessage( MessageFormat.format( "The valid value range is [{0},{1}].", new String[]{ minValue, maxValue } ) );
	fMaxNumberOfInstructionsText.load();
	fMaxNumberOfInstructionsText.setPropertyChangeListener(
	new IPropertyChangeListener()
	{
	public void propertyChange( PropertyChangeEvent event )
	{
	if ( event.getProperty().equals( FieldEditor.IS_VALID ) )
	setValid( getMaxNumberOfInstructionsText().isValid() );
	}
	} );
	}

	/**
	* Creates a button with the given label and sets the default
	* configuration data.
	*/
	private Button createCheckButton( Composite parent, String label )
	{
	Button button = new Button( parent, SWT.CHECK \| SWT.LEFT );
	button.setText( label );
	// FieldEditor GridData
	GridData data = new GridData();
	button.setLayoutData( data );
	return button;
	}

	/**
	* Creates a button with the given label and sets the default
	* configuration data.
	*/
	private Combo createComboBox( Composite parent, String label, String[] items, String selection )
	{
	ControlFactory.createLabel( parent, label );
	Combo combo = ControlFactory.createSelectCombo( parent, items, selection );
	combo.setLayoutData( new GridData() );
	return combo;
	}

	protected void createSpacer( Composite composite, int columnSpan )
	{
	Label label = new Label( composite, SWT.NONE );
	GridData gd = new GridData();
	gd.horizontalSpan = columnSpan;
	label.setLayoutData( gd );
	}

	/**
	* @see IPreferencePage#performOk()
	* Also, notifies interested listeners
	*/
	public boolean performOk()
	{
	storeValues();
	if ( getPropertyChangeListener().hasStateChanged() )
	{
	refreshViews();
	}
	CDebugUIPlugin.getDefault().savePluginPreferences();
	CDebugCorePlugin.getDefault().savePluginPreferences();
	return true;
	}

	/**
	* Refresh the variables and expression views as changes
	* have occurred that affects these views.
	*/
	private void refreshViews()
	{
	BusyIndicator.showWhile( getShell().getDisplay(),
	new Runnable()
	{
	public void run()
	{
	// Refresh interested views
	IWorkbenchWindow[] windows = CDebugUIPlugin.getDefault().getWorkbench().getWorkbenchWindows();
	IWorkbenchPage page = null;
	for ( int i = 0; i < windows.length; i++ )
	{
	page = windows[i].getActivePage();
	if ( page != null )
	{
	refreshViews( page, IDebugUIConstants.ID_EXPRESSION_VIEW );
	refreshViews( page, IDebugUIConstants.ID_VARIABLE_VIEW );
	refreshViews( page, ICDebugUIConstants.ID_REGISTERS_VIEW );
	}
	}
	}
	} );
	}

	/**
	* Refresh all views in the given workbench page with the given view id
	*/
	protected void refreshViews( IWorkbenchPage page, String viewID )
	{
	IViewPart part = page.findView( viewID );
	if ( part != null )
	{
	IDebugView adapter = (IDebugView)part.getAdapter( IDebugView.class );
	if ( adapter != null )
	{
	Viewer viewer = adapter.getViewer();
	if ( viewer instanceof StructuredViewer )
	{
	((StructuredViewer)viewer).refresh();
	}
	}
	}
	}

	/**
	* Store the preference values based on the state of the component widgets
	*/
	private void storeValues()
	{
	IPreferenceStore store = getPreferenceStore();
	store.setValue( ICDebugPreferenceConstants.PREF_SHOW_FULL_PATHS, fPathsButton.getSelection() );
	CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_AUTO_DISASSEMBLY, fAutoDisassemblyButton.getSelection() );
	CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS, getMaxNumberOfInstructionsText().getIntValue() );
	CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_DEFAULT_VARIABLE_FORMAT, getFormatId( fVariableFormatCombo.getSelectionIndex() ) );
	CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_DEFAULT_EXPRESSION_FORMAT, getFormatId( fExpressionFormatCombo.getSelectionIndex() ) );
	CDebugCorePlugin.getDefault().getPluginPreferences().setValue( ICDebugConstants.PREF_DEFAULT_REGISTER_FORMAT, getFormatId( fRegisterFormatCombo.getSelectionIndex() ) );
	}

	/**
	* Sets the default preferences.
	* @see PreferencePage#performDefaults()
	*/
	protected void performDefaults()
	{
	setDefaultValues();
	super.performDefaults();
	}

	private void setDefaultValues()
	{
	IPreferenceStore store = getPreferenceStore();
	fPathsButton.setSelection( store.getDefaultBoolean( ICDebugPreferenceConstants.PREF_SHOW_FULL_PATHS ) );
	fAutoDisassemblyButton.setSelection( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultBoolean( ICDebugConstants.PREF_AUTO_DISASSEMBLY ) );
	getMaxNumberOfInstructionsText().setStringValue( new Integer( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultInt( ICDebugConstants.PREF_MAX_NUMBER_OF_INSTRUCTIONS ) ).toString() );
	fVariableFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultInt( ICDebugConstants.PREF_DEFAULT_VARIABLE_FORMAT ) ) );
	fExpressionFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultInt( ICDebugConstants.PREF_DEFAULT_EXPRESSION_FORMAT ) ) );
	fRegisterFormatCombo.select( getFormatIndex( CDebugCorePlugin.getDefault().getPluginPreferences().getDefaultInt( ICDebugConstants.PREF_DEFAULT_REGISTER_FORMAT ) ) );
	}

	private static int getFormatId( int index )
	{
	return ( index >= 0 && index < fFormatIds.length ) ? fFormatIds[index] : fFormatIds[0];
	}

	private static int getFormatIndex( int id )
	{
	for ( int i = 0; i < fFormatIds.length; ++i )
	if ( fFormatIds[i] == id )
	return i;
	return -1;
	}

	protected IntegerFieldEditor getMaxNumberOfInstructionsText()
	{
	return fMaxNumberOfInstructionsText;
	}
	}