debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/views/memory/MemoryControlArea.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.views.memory;

 import org.eclipse.cdt.debug.core.CDebugModel;
 import org.eclipse.cdt.debug.core.ICMemoryManager;
 import org.eclipse.cdt.debug.core.model.IFormattedMemoryBlock;
 import org.eclipse.cdt.debug.internal.ui.CDebugUIUtils;
 import org.eclipse.cdt.debug.internal.ui.preferences.ICDebugPreferenceConstants;
 import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
 import org.eclipse.debug.core.DebugException;
 import org.eclipse.debug.core.model.IDebugTarget;
 import org.eclipse.jface.text.ITextOperationTarget;
 import org.eclipse.jface.util.PropertyChangeEvent;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.CTabFolder;
 import org.eclipse.swt.custom.CTabItem;
 import org.eclipse.swt.events.FocusEvent;
 import org.eclipse.swt.events.FocusListener;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.KeyListener;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.MouseEvent;
 import org.eclipse.swt.events.MouseListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.TraverseEvent;
 import org.eclipse.swt.events.TraverseListener;
 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.Label;
 import org.eclipse.swt.widgets.Text;

 /**
  *
  * The tab content in the memory view.
  *
  * @since Jul 25, 2002
  */
 public class MemoryControlArea extends Composite implements ITextOperationTarget
 {
 	private MemoryView fMemoryView;
 	private MemoryPresentation fPresentation;
 	private int fIndex = 0;
 	private ICMemoryManager fMemoryManager = null;

 	private Text fAddressText;
 	private Button fEvaluateButton;
 	private MemoryText fMemoryText;

 	private int fFormat = ICMemoryManager.MEMORY_FORMAT_HEX;
 	private int fWordSize = ICMemoryManager.MEMORY_SIZE_BYTE;
 	private int fNumberOfRows = 40;
 	private int fNumberOfColumns = 16;
 	private char fPaddingChar = '.';

 	/**
 	 * Constructor for MemoryControlArea.
 	 * @param parent
 	 * @param style
 	 */
 	public MemoryControlArea( Composite parent, int style, int index, MemoryView view )
 	{
 		super( parent, style );
 		fMemoryView = view;
 		GridLayout layout = new GridLayout();
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		GridData gridData = new GridData( GridData.FILL_BOTH |
 										  GridData.GRAB_HORIZONTAL |
 										  GridData.GRAB_VERTICAL );
 		setLayout( layout );
 		setLayoutData( gridData );
 		setIndex( index );
 		fPresentation = createPresentation();
 		fAddressText = createAddressText( this );
 		fMemoryText = createMemoryText( this, style, fPresentation );
 		setDefaultPreferences();
 		updateToolTipText();
 	}

 	private void setDefaultPreferences()
 	{
 		char[] paddingCharStr = CDebugUIPlugin.getDefault().getPreferenceStore().getString( ICDebugPreferenceConstants.PREF_MEMORY_PADDING_CHAR ).toCharArray();
 		setPaddingChar( ( paddingCharStr.length > 0 ) ? paddingCharStr[0] : '.' );
 		fPresentation.setDisplayAscii( CDebugUIPlugin.getDefault().getPreferenceStore().getBoolean( ICDebugPreferenceConstants.PREF_MEMORY_SHOW_ASCII ) );
 	}

 	private MemoryPresentation createPresentation()
 	{
 		return new MemoryPresentation();
 	}

 	public MemoryPresentation getPresentation()
 	{
 		return fPresentation;
 	}

 	private Text createAddressText( Composite parent )
 	{
 		Composite composite = new Composite( parent, SWT.NONE );
 		composite.setLayout( new GridLayout( 3, false ) );
 		composite.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
 		// create label
 		Label label = new Label( composite, SWT.RIGHT );
 		label.setText( "Address: " );
 		label.pack();

 		// create address text
 		Text text = new Text( composite, SWT.BORDER );
 		text.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
 		text.addTraverseListener( new TraverseListener()
 										{
 											public void keyTraversed( TraverseEvent e )
 											{
 												if ( e.detail == SWT.TRAVERSE_RETURN && e.stateMask == 0 )
 												{
 													e.doit = false;
 													handleAddressEnter();
 												}
 											}
 										} );
 		text.addFocusListener( new FocusListener()
 									{
 										public void focusGained( FocusEvent e )
 										{
 											getMemoryView().updateObjects();
 										}

 										public void focusLost( FocusEvent e )
 										{
 											getMemoryView().updateObjects();
 										}
 									} );
 		text.addModifyListener( new ModifyListener()
 									{
 										public void modifyText( ModifyEvent e )
 										{
 											handleAddressModification();
 										}
 									} );
 		text.addKeyListener( new KeyListener()
 									{
 										public void keyPressed( KeyEvent e )
 										{
 											getMemoryView().updateObjects();
 										}

 										public void keyReleased( KeyEvent e )
 										{
 											getMemoryView().updateObjects();
 										}
 									} );
 		text.addMouseListener( new MouseListener()
 									{
 										public void mouseDoubleClick( MouseEvent e )
 										{
 											getMemoryView().updateObjects();
 										}

 										public void mouseDown( MouseEvent e )
 										{
 											getMemoryView().updateObjects();
 										}

 										public void mouseUp( MouseEvent e )
 										{
 											getMemoryView().updateObjects();
 										}
 									} );

 		fEvaluateButton = new Button( composite, SWT.PUSH );
 		fEvaluateButton.setText( "Evaluate" );
 		fEvaluateButton.setToolTipText( "Evaluate expression to address" );
 		fEvaluateButton.addSelectionListener( new SelectionAdapter()
 													{
 														public void widgetSelected( SelectionEvent e )
 														{
 															evaluateAddressExpression();
 														}
 													} );
 		return text;
 	}

 	private MemoryText createMemoryText(  Composite parent,
 										  int styles,
 										  MemoryPresentation presentation )
 	{
 		return new MemoryText( parent, SWT.BORDER | SWT.HIDE_SELECTION | SWT.V_SCROLL | SWT.H_SCROLL, presentation );
 	}

 	protected void handleAddressEnter()
 	{
 		if ( getMemoryManager() != null )
 		{
 			String address = fAddressText.getText().trim();
 			try
 			{
 				removeBlock();
 				if ( address.length() > 0 )
 				{
 					createBlock( address );
 				}
 			}
 			catch( DebugException e )
 			{
 				CDebugUIPlugin.errorDialog( "Unable to get memory block.", e.getStatus() );
 			}
 			refresh();
 			getMemoryView().updateObjects();
 		}
 	}

 	public void propertyChange( PropertyChangeEvent event )
 	{
 		if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_BACKGROUND_RGB ) )
 		{
 			fMemoryText.setBackgroundColor();
 		}
 		else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_FOREGROUND_RGB ) )
 		{
 			fMemoryText.setForegroundColor();
 		}
 		else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_FONT ) )
 		{
 			fMemoryText.changeFont();
 		}
 		else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_ADDRESS_RGB ) )
 		{
 			fMemoryText.setAddressColor();
 		}
 		else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_CHANGED_RGB ) )
 		{
 			fMemoryText.setChangedColor();
 		}
 		else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_DIRTY_RGB ) )
 		{
 			fMemoryText.setDirtyColor();
 		}
 		else if ( event.getProperty().equals( ICDebugPreferenceConstants.PREF_MEMORY_PADDING_CHAR ) )
 		{
 			String paddingCharString = (String)event.getNewValue();
 			setPaddingChar( ( paddingCharString.length() > 0 ) ? paddingCharString.charAt( 0 ) : '.' );
 			refresh();
 		}
 	}

 	public void setInput( Object input )
 	{
 		setMemoryManager( ( input instanceof ICMemoryManager ) ? (ICMemoryManager)input : null );
 		getPresentation().setMemoryBlock( getMemoryBlock() );
 		setState();
 		refresh();
 	}

 	protected void refresh()
 	{
 		fAddressText.setText( ( getPresentation() != null ) ? getPresentation().getAddressExpression() : "" );
 		fMemoryText.refresh();
 		getMemoryView().updateObjects();
 		updateToolTipText();
 	}

 	protected void setMemoryManager( ICMemoryManager mm )
 	{
 		fMemoryManager = mm;
 	}

 	protected ICMemoryManager getMemoryManager()
 	{
 		return fMemoryManager;
 	}

 	protected IFormattedMemoryBlock getMemoryBlock()
 	{
 		return ( getMemoryManager() != null ) ? getMemoryManager().getBlock( getIndex() ) : null;
 	}

 	protected int getIndex()
 	{
 		return fIndex;
 	}

 	protected void setIndex( int index )
 	{
 		fIndex = index;
 	}

 	private void createBlock( String address ) throws DebugException
 	{
 		if ( getMemoryManager() != null )
 		{
 			getMemoryManager().setBlockAt( getIndex(),
 										   CDebugModel.createFormattedMemoryBlock( (IDebugTarget)getMemoryManager().getAdapter( IDebugTarget.class ),
 										   										   address,
 																				   getFormat(),
 																				   getWordSize(),
 																				   getNumberOfRows(),
 																				   getNumberOfColumns(),
 																				   getPaddingChar() ) );
  			getMemoryBlock().setFrozen( !CDebugUIPlugin.getDefault().getPreferenceStore().getBoolean( ICDebugPreferenceConstants.PREF_MEMORY_AUTO_REFRESH ) );
 			getPresentation().setMemoryBlock( getMemoryBlock() );
 		}
 		setMemoryTextState();
 		updateToolTipText();
 	}

 	private void removeBlock() throws DebugException
 	{
 		if ( getMemoryManager() != null )
 		{
 			getMemoryManager().removeBlock( getIndex() );
 			getPresentation().setMemoryBlock( null );
 		}
 		setMemoryTextState();
 		updateToolTipText();
 	}

 	public int getFormat()
 	{
 		return fFormat;
 	}

 	public int getNumberOfColumns()
 	{
 		return fNumberOfColumns;
 	}

 	public int getNumberOfRows()
 	{
 		return fNumberOfRows;
 	}

 	public char getPaddingChar()
 	{
 		return fPaddingChar;
 	}

 	public int getWordSize()
 	{
 		return fWordSize;
 	}

 	public void setFormat(int format)
 	{
 		fFormat = format;
 	}

 	public void setNumberOfColumns( int numberOfColumns )
 	{
 		fNumberOfColumns = numberOfColumns;
 	}

 	public void setNumberOfRows( int numberOfRows )
 	{
 		fNumberOfRows = numberOfRows;
 	}

 	public void setPaddingChar( char paddingChar )
 	{
 		fPaddingChar = paddingChar;
 		if ( getMemoryBlock() != null )
 		{
 			try
 			{
 				getMemoryBlock().reformat( getMemoryBlock().getFormat(),
 										   getMemoryBlock().getWordSize(),
 										   getMemoryBlock().getNumberOfRows(),
 										   getMemoryBlock().getNumberOfColumns(),
 										   fPaddingChar );
 			}
 			catch( DebugException e )
 			{
 				// ignore
 			}
 		}
 	}

 	public void setWordSize( int wordSize )
 	{
 		fWordSize = wordSize;
 	}

 	private void enableAddressText( boolean enable )
 	{
 		fAddressText.setEnabled( enable );
 	}

 	protected void setState()
 	{
 		enableAddressText( getMemoryManager() != null );
 		setMemoryTextState();
 	}

 	private void setMemoryTextState()
 	{
 		fMemoryText.setEditable( getMemoryManager() != null && getMemoryBlock() != null );
 	}

 	protected MemoryText getMemoryText()
 	{
 		return fMemoryText;
 	}

 	protected void clear()
 	{
 		fAddressText.setText( "" );
 		handleAddressEnter();
 		updateToolTipText();
 	}

 	/**
 	 * @see org.eclipse.swt.widgets.Widget#dispose()
 	 */
 	public void dispose()
 	{
 		if ( getPresentation() != null )
 		{
 			getPresentation().dispose();
 		}
 		super.dispose();
 	}

 	protected String getTitle()
 	{
 		if ( getParent() instanceof CTabFolder )
 		{
 			CTabItem[] tabItems = ((CTabFolder)getParent()).getItems();
 			return tabItems[fIndex].getText();
 		}
 		return "";
 	}

 	protected void setTitle( String title )
 	{
 		if ( getParent() instanceof CTabFolder )
 		{
 			CTabItem[] tabItems = ((CTabFolder)getParent()).getItems();
 			tabItems[fIndex].setText( title );
 		}
 	}

 	protected void setTabItemToolTipText( String text )
 	{
 		String newText = replaceMnemonicCharacters( text );
 		if ( getParent() instanceof CTabFolder )
 		{
 			CTabItem[] tabItems = ((CTabFolder)getParent()).getItems();
 			tabItems[fIndex].setToolTipText( "Memory View " + (fIndex + 1) + ( ( newText.length() > 0 ) ? ( ": " + newText ) : "" ) );
 		}
 	}

 	protected void refreshMemoryBlock()
 	{
 		if ( getMemoryBlock() != null )
 		{
 			try
 			{
 				getMemoryBlock().refresh();
 			}
 			catch( DebugException e )
 			{
 				CDebugUIPlugin.errorDialog( "Unable to refresh memory.", e.getStatus() );
 			}
 		}
 	}

 	private void updateToolTipText()
 	{
 		setTabItemToolTipText( fAddressText.getText().trim() );
 	}

 	private String replaceMnemonicCharacters( String text )
 	{
 		StringBuffer sb = new StringBuffer( text.length() );
 		for ( int i = 0; i < text.length(); ++i )
 		{
 			char ch = text.charAt( i );
 			sb.append( ch );
 			if ( ch == '&' )
 			{
 				sb.append( ch );
 			}
 		}
 		return sb.toString();
 	}

 	protected void handleAddressModification()
 	{
 		fEvaluateButton.setEnabled( fAddressText.getText().trim().length() > 0 );
 	}

 	protected void evaluateAddressExpression()
 	{
 		if ( getMemoryManager() != null )
 		{
 			if ( getMemoryBlock() == null )
 			{
 				String expression = fAddressText.getText().trim();
 				try
 				{
 					removeBlock();
 					if ( expression.length() > 0 )
 					{
 						createBlock( expression );
 					}
 				}
 				catch( DebugException e )
 				{
 					CDebugUIPlugin.errorDialog( "Unable to get memory block.", e.getStatus() );
 				}
 			}
 			if ( getMemoryBlock() != null )
 			{
 				fAddressText.setText( CDebugUIUtils.toHexAddressString( getMemoryBlock().getStartAddress() ) );
 				handleAddressEnter();
 			}
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.text.ITextOperationTarget#canDoOperation(int)
 	 */
 	public boolean canDoOperation( int operation )
 	{
 		switch( operation )
 		{
 			case CUT:
 			case COPY:
 				return ( fAddressText != null && fAddressText.isFocusControl() && fAddressText.isEnabled() && fAddressText.getSelectionCount() > 0 );
 			case PASTE:
 			case SELECT_ALL:
 				return ( fAddressText != null && fAddressText.isFocusControl() && fAddressText.isEnabled() );
 		}

 		return false;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.text.ITextOperationTarget#doOperation(int)
 	 */
 	public void doOperation( int operation )
 	{
 		switch( operation )
 		{
 			case CUT:
 				fAddressText.cut();
 				break;
 			case COPY:
 				fAddressText.copy();
 				break;
 			case PASTE:
 				fAddressText.paste();
 				break;
 			case SELECT_ALL:
 				fAddressText.selectAll();
 				break;
 		}
 	}

 	protected MemoryView getMemoryView()
 	{
 		return fMemoryView;
 	}
 }
	/*
	*(c) Copyright QNX Software Systems Ltd. 2002.
	* All Rights Reserved.
	*
	*/

	package org.eclipse.cdt.debug.internal.ui.views.memory;

	import org.eclipse.cdt.debug.core.CDebugModel;
	import org.eclipse.cdt.debug.core.ICMemoryManager;
	import org.eclipse.cdt.debug.core.model.IFormattedMemoryBlock;
	import org.eclipse.cdt.debug.internal.ui.CDebugUIUtils;
	import org.eclipse.cdt.debug.internal.ui.preferences.ICDebugPreferenceConstants;
	import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
	import org.eclipse.debug.core.DebugException;
	import org.eclipse.debug.core.model.IDebugTarget;
	import org.eclipse.jface.text.ITextOperationTarget;
	import org.eclipse.jface.util.PropertyChangeEvent;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.CTabFolder;
	import org.eclipse.swt.custom.CTabItem;
	import org.eclipse.swt.events.FocusEvent;
	import org.eclipse.swt.events.FocusListener;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.KeyListener;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.MouseEvent;
	import org.eclipse.swt.events.MouseListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.TraverseEvent;
	import org.eclipse.swt.events.TraverseListener;
	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.Label;
	import org.eclipse.swt.widgets.Text;

	/**
	*
	* The tab content in the memory view.
	*
	* @since Jul 25, 2002
	*/
	public class MemoryControlArea extends Composite implements ITextOperationTarget
	{
	private MemoryView fMemoryView;
	private MemoryPresentation fPresentation;
	private int fIndex = 0;
	private ICMemoryManager fMemoryManager = null;

	private Text fAddressText;
	private Button fEvaluateButton;
	private MemoryText fMemoryText;

	private int fFormat = ICMemoryManager.MEMORY_FORMAT_HEX;
	private int fWordSize = ICMemoryManager.MEMORY_SIZE_BYTE;
	private int fNumberOfRows = 40;
	private int fNumberOfColumns = 16;
	private char fPaddingChar = '.';

	/**
	* Constructor for MemoryControlArea.
	* @param parent
	* @param style
	*/
	public MemoryControlArea( Composite parent, int style, int index, MemoryView view )
	{
	super( parent, style );
	fMemoryView = view;
	GridLayout layout = new GridLayout();
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	GridData gridData = new GridData( GridData.FILL_BOTH \|
	GridData.GRAB_HORIZONTAL \|
	GridData.GRAB_VERTICAL );
	setLayout( layout );
	setLayoutData( gridData );
	setIndex( index );
	fPresentation = createPresentation();
	fAddressText = createAddressText( this );
	fMemoryText = createMemoryText( this, style, fPresentation );
	setDefaultPreferences();
	updateToolTipText();
	}

	private void setDefaultPreferences()
	{
	char[] paddingCharStr = CDebugUIPlugin.getDefault().getPreferenceStore().getString( ICDebugPreferenceConstants.PREF_MEMORY_PADDING_CHAR ).toCharArray();
	setPaddingChar( ( paddingCharStr.length > 0 ) ? paddingCharStr[0] : '.' );
	fPresentation.setDisplayAscii( CDebugUIPlugin.getDefault().getPreferenceStore().getBoolean( ICDebugPreferenceConstants.PREF_MEMORY_SHOW_ASCII ) );
	}

	private MemoryPresentation createPresentation()
	{
	return new MemoryPresentation();
	}

	public MemoryPresentation getPresentation()
	{
	return fPresentation;
	}

	private Text createAddressText( Composite parent )
	{
	Composite composite = new Composite( parent, SWT.NONE );
	composite.setLayout( new GridLayout( 3, false ) );
	composite.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
	// create label
	Label label = new Label( composite, SWT.RIGHT );
	label.setText( "Address: " );
	label.pack();

	// create address text
	Text text = new Text( composite, SWT.BORDER );
	text.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
	text.addTraverseListener( new TraverseListener()
	{
	public void keyTraversed( TraverseEvent e )
	{
	if ( e.detail == SWT.TRAVERSE_RETURN && e.stateMask == 0 )
	{
	e.doit = false;
	handleAddressEnter();
	}
	}
	} );
	text.addFocusListener( new FocusListener()
	{
	public void focusGained( FocusEvent e )
	{
	getMemoryView().updateObjects();
	}

	public void focusLost( FocusEvent e )
	{
	getMemoryView().updateObjects();
	}
	} );
	text.addModifyListener( new ModifyListener()
	{
	public void modifyText( ModifyEvent e )
	{
	handleAddressModification();
	}
	} );
	text.addKeyListener( new KeyListener()
	{
	public void keyPressed( KeyEvent e )
	{
	getMemoryView().updateObjects();
	}

	public void keyReleased( KeyEvent e )
	{
	getMemoryView().updateObjects();
	}
	} );
	text.addMouseListener( new MouseListener()
	{
	public void mouseDoubleClick( MouseEvent e )
	{
	getMemoryView().updateObjects();
	}

	public void mouseDown( MouseEvent e )
	{
	getMemoryView().updateObjects();
	}

	public void mouseUp( MouseEvent e )
	{
	getMemoryView().updateObjects();
	}
	} );

	fEvaluateButton = new Button( composite, SWT.PUSH );
	fEvaluateButton.setText( "Evaluate" );
	fEvaluateButton.setToolTipText( "Evaluate expression to address" );
	fEvaluateButton.addSelectionListener( new SelectionAdapter()
	{
	public void widgetSelected( SelectionEvent e )
	{
	evaluateAddressExpression();
	}
	} );
	return text;
	}

	private MemoryText createMemoryText( Composite parent,
	int styles,
	MemoryPresentation presentation )
	{
	return new MemoryText( parent, SWT.BORDER \| SWT.HIDE_SELECTION \| SWT.V_SCROLL \| SWT.H_SCROLL, presentation );
	}

	protected void handleAddressEnter()
	{
	if ( getMemoryManager() != null )
	{
	String address = fAddressText.getText().trim();
	try
	{
	removeBlock();
	if ( address.length() > 0 )
	{
	createBlock( address );
	}
	}
	catch( DebugException e )
	{
	CDebugUIPlugin.errorDialog( "Unable to get memory block.", e.getStatus() );
	}
	refresh();
	getMemoryView().updateObjects();
	}
	}

	public void propertyChange( PropertyChangeEvent event )
	{
	if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_BACKGROUND_RGB ) )
	{
	fMemoryText.setBackgroundColor();
	}
	else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_FOREGROUND_RGB ) )
	{
	fMemoryText.setForegroundColor();
	}
	else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_FONT ) )
	{
	fMemoryText.changeFont();
	}
	else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_ADDRESS_RGB ) )
	{
	fMemoryText.setAddressColor();
	}
	else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_CHANGED_RGB ) )
	{
	fMemoryText.setChangedColor();
	}
	else if ( event.getProperty().equals( ICDebugPreferenceConstants.MEMORY_DIRTY_RGB ) )
	{
	fMemoryText.setDirtyColor();
	}
	else if ( event.getProperty().equals( ICDebugPreferenceConstants.PREF_MEMORY_PADDING_CHAR ) )
	{
	String paddingCharString = (String)event.getNewValue();
	setPaddingChar( ( paddingCharString.length() > 0 ) ? paddingCharString.charAt( 0 ) : '.' );
	refresh();
	}
	}

	public void setInput( Object input )
	{
	setMemoryManager( ( input instanceof ICMemoryManager ) ? (ICMemoryManager)input : null );
	getPresentation().setMemoryBlock( getMemoryBlock() );
	setState();
	refresh();
	}

	protected void refresh()
	{
	fAddressText.setText( ( getPresentation() != null ) ? getPresentation().getAddressExpression() : "" );
	fMemoryText.refresh();
	getMemoryView().updateObjects();
	updateToolTipText();
	}

	protected void setMemoryManager( ICMemoryManager mm )
	{
	fMemoryManager = mm;
	}

	protected ICMemoryManager getMemoryManager()
	{
	return fMemoryManager;
	}

	protected IFormattedMemoryBlock getMemoryBlock()
	{
	return ( getMemoryManager() != null ) ? getMemoryManager().getBlock( getIndex() ) : null;
	}

	protected int getIndex()
	{
	return fIndex;
	}

	protected void setIndex( int index )
	{
	fIndex = index;
	}

	private void createBlock( String address ) throws DebugException
	{
	if ( getMemoryManager() != null )
	{
	getMemoryManager().setBlockAt( getIndex(),
	CDebugModel.createFormattedMemoryBlock( (IDebugTarget)getMemoryManager().getAdapter( IDebugTarget.class ),
	address,
	getFormat(),
	getWordSize(),
	getNumberOfRows(),
	getNumberOfColumns(),
	getPaddingChar() ) );
	getMemoryBlock().setFrozen( !CDebugUIPlugin.getDefault().getPreferenceStore().getBoolean( ICDebugPreferenceConstants.PREF_MEMORY_AUTO_REFRESH ) );
	getPresentation().setMemoryBlock( getMemoryBlock() );
	}
	setMemoryTextState();
	updateToolTipText();
	}

	private void removeBlock() throws DebugException
	{
	if ( getMemoryManager() != null )
	{
	getMemoryManager().removeBlock( getIndex() );
	getPresentation().setMemoryBlock( null );
	}
	setMemoryTextState();
	updateToolTipText();
	}

	public int getFormat()
	{
	return fFormat;
	}

	public int getNumberOfColumns()
	{
	return fNumberOfColumns;
	}

	public int getNumberOfRows()
	{
	return fNumberOfRows;
	}

	public char getPaddingChar()
	{
	return fPaddingChar;
	}

	public int getWordSize()
	{
	return fWordSize;
	}

	public void setFormat(int format)
	{
	fFormat = format;
	}

	public void setNumberOfColumns( int numberOfColumns )
	{
	fNumberOfColumns = numberOfColumns;
	}

	public void setNumberOfRows( int numberOfRows )
	{
	fNumberOfRows = numberOfRows;
	}

	public void setPaddingChar( char paddingChar )
	{
	fPaddingChar = paddingChar;
	if ( getMemoryBlock() != null )
	{
	try
	{
	getMemoryBlock().reformat( getMemoryBlock().getFormat(),
	getMemoryBlock().getWordSize(),
	getMemoryBlock().getNumberOfRows(),
	getMemoryBlock().getNumberOfColumns(),
	fPaddingChar );
	}
	catch( DebugException e )
	{
	// ignore
	}
	}
	}

	public void setWordSize( int wordSize )
	{
	fWordSize = wordSize;
	}

	private void enableAddressText( boolean enable )
	{
	fAddressText.setEnabled( enable );
	}

	protected void setState()
	{
	enableAddressText( getMemoryManager() != null );
	setMemoryTextState();
	}

	private void setMemoryTextState()
	{
	fMemoryText.setEditable( getMemoryManager() != null && getMemoryBlock() != null );
	}

	protected MemoryText getMemoryText()
	{
	return fMemoryText;
	}

	protected void clear()
	{
	fAddressText.setText( "" );
	handleAddressEnter();
	updateToolTipText();
	}

	/**
	* @see org.eclipse.swt.widgets.Widget#dispose()
	*/
	public void dispose()
	{
	if ( getPresentation() != null )
	{
	getPresentation().dispose();
	}
	super.dispose();
	}

	protected String getTitle()
	{
	if ( getParent() instanceof CTabFolder )
	{
	CTabItem[] tabItems = ((CTabFolder)getParent()).getItems();
	return tabItems[fIndex].getText();
	}
	return "";
	}

	protected void setTitle( String title )
	{
	if ( getParent() instanceof CTabFolder )
	{
	CTabItem[] tabItems = ((CTabFolder)getParent()).getItems();
	tabItems[fIndex].setText( title );
	}
	}

	protected void setTabItemToolTipText( String text )
	{
	String newText = replaceMnemonicCharacters( text );
	if ( getParent() instanceof CTabFolder )
	{
	CTabItem[] tabItems = ((CTabFolder)getParent()).getItems();
	tabItems[fIndex].setToolTipText( "Memory View " + (fIndex + 1) + ( ( newText.length() > 0 ) ? ( ": " + newText ) : "" ) );
	}
	}

	protected void refreshMemoryBlock()
	{
	if ( getMemoryBlock() != null )
	{
	try
	{
	getMemoryBlock().refresh();
	}
	catch( DebugException e )
	{
	CDebugUIPlugin.errorDialog( "Unable to refresh memory.", e.getStatus() );
	}
	}
	}

	private void updateToolTipText()
	{
	setTabItemToolTipText( fAddressText.getText().trim() );
	}

	private String replaceMnemonicCharacters( String text )
	{
	StringBuffer sb = new StringBuffer( text.length() );
	for ( int i = 0; i < text.length(); ++i )
	{
	char ch = text.charAt( i );
	sb.append( ch );
	if ( ch == '&' )
	{
	sb.append( ch );
	}
	}
	return sb.toString();
	}

	protected void handleAddressModification()
	{
	fEvaluateButton.setEnabled( fAddressText.getText().trim().length() > 0 );
	}

	protected void evaluateAddressExpression()
	{
	if ( getMemoryManager() != null )
	{
	if ( getMemoryBlock() == null )
	{
	String expression = fAddressText.getText().trim();
	try
	{
	removeBlock();
	if ( expression.length() > 0 )
	{
	createBlock( expression );
	}
	}
	catch( DebugException e )
	{
	CDebugUIPlugin.errorDialog( "Unable to get memory block.", e.getStatus() );
	}
	}
	if ( getMemoryBlock() != null )
	{
	fAddressText.setText( CDebugUIUtils.toHexAddressString( getMemoryBlock().getStartAddress() ) );
	handleAddressEnter();
	}
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.text.ITextOperationTarget#canDoOperation(int)
	*/
	public boolean canDoOperation( int operation )
	{
	switch( operation )
	{
	case CUT:
	case COPY:
	return ( fAddressText != null && fAddressText.isFocusControl() && fAddressText.isEnabled() && fAddressText.getSelectionCount() > 0 );
	case PASTE:
	case SELECT_ALL:
	return ( fAddressText != null && fAddressText.isFocusControl() && fAddressText.isEnabled() );
	}

	return false;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.text.ITextOperationTarget#doOperation(int)
	*/
	public void doOperation( int operation )
	{
	switch( operation )
	{
	case CUT:
	fAddressText.cut();
	break;
	case COPY:
	fAddressText.copy();
	break;
	case PASTE:
	fAddressText.paste();
	break;
	case SELECT_ALL:
	fAddressText.selectAll();
	break;
	}
	}

	protected MemoryView getMemoryView()
	{
	return fMemoryView;
	}
	}