org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/hover/SourceViewerInformationControl.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdt.internal.ui.text.java.hover;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.StyledText;
 import org.eclipse.swt.events.DisposeEvent;
 import org.eclipse.swt.events.DisposeListener;
 import org.eclipse.swt.events.FocusListener;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.KeyListener;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.FontData;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;

 import org.eclipse.jface.preference.IPreferenceStore;

 import org.eclipse.jface.text.Document;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jface.text.IInformationControl;
 import org.eclipse.jface.text.IInformationControlExtension;
 import org.eclipse.jface.text.source.ISourceViewer;
 import org.eclipse.jface.text.source.SourceViewer;

 import org.eclipse.jdt.internal.ui.JavaPlugin;
 import org.eclipse.jdt.internal.ui.javaeditor.JavaSourceViewer;
 import org.eclipse.jdt.internal.ui.text.SimpleJavaSourceViewerConfiguration;

 /**
  * Source viewer based implementation of <code>IInformationControl</code>.
  * Displays information in a source viewer.
  *
  * @since 3.0
  */
 public class SourceViewerInformationControl implements IInformationControl, IInformationControlExtension, DisposeListener {

 	/** Border thickness in pixels. */
 	private static final int BORDER= 1;
 	/** The control's shell */
 	private Shell fShell;
 	/** The control's text widget */
 	private StyledText fText;
 	/** The control's source viewer */
 	private SourceViewer fViewer;
 	/**
 	 * The optional status field.
 	 *
 	 * @since 3.0
 	 */
 	private Label fStatusField;
 	/**
 	 * The separator for the optional status field.
 	 *
 	 * @since 3.0
 	 */
 	private Label fSeparator;
 	/**
 	 * The font of the optional status text label.
 	 *
 	 * @since 3.0
 	 */
 	private Font fStatusTextFont;

 	/**
 	 * Creates a default information control with the given shell as parent. The given
 	 * information presenter is used to process the information to be displayed. The given
 	 * styles are applied to the created styled text widget.
 	 *
 	 * @param parent the parent shell
 	 * @param shellStyle the additional styles for the shell
 	 * @param style the additional styles for the styled text widget
 	 */
 	public SourceViewerInformationControl(Shell parent, int shellStyle, int style) {
 		this(parent, shellStyle, style, null);
 	}

 	/**
 	 * Creates a default information control with the given shell as parent. The given
 	 * information presenter is used to process the information to be displayed. The given
 	 * styles are applied to the created styled text widget.
 	 *
 	 * @param parent the parent shell
 	 * @param shellStyle the additional styles for the shell
 	 * @param style the additional styles for the styled text widget
 	 * @param statusFieldText the text to be used in the optional status field
 	 *                         or <code>null</code> if the status field should be hidden
 	 * @since 3.0
 	 */
 	public SourceViewerInformationControl(Shell parent, int shellStyle, int style, String statusFieldText) {
 		GridLayout layout;
 		GridData gd;

 		fShell= new Shell(parent, SWT.NO_FOCUS | SWT.ON_TOP | shellStyle);
 		Display display= fShell.getDisplay();
 		fShell.setBackground(display.getSystemColor(SWT.COLOR_BLACK));

 		Composite composite= fShell;
 		layout= new GridLayout(1, false);
 		int border= ((shellStyle & SWT.NO_TRIM) == 0) ? 0 : BORDER;
 		layout.marginHeight= border;
 		layout.marginWidth= border;
 		composite.setLayout(layout);
 		gd= new GridData(GridData.FILL_HORIZONTAL);
 		composite.setLayoutData(gd);

 		if (statusFieldText != null) {
 			composite= new Composite(composite, SWT.NONE);
 			layout= new GridLayout(1, false);
 			layout.marginHeight= 0;
 			layout.marginWidth= 0;
 			composite.setLayout(layout);
 			gd= new GridData(GridData.FILL_BOTH);
 			composite.setLayoutData(gd);
 			composite.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
 			composite.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
 		}

 		// Source viewer
 		IPreferenceStore store= JavaPlugin.getDefault().getCombinedPreferenceStore();
 		fViewer= new JavaSourceViewer(composite, null, null, false, style, store);
 		fViewer.configure(new SimpleJavaSourceViewerConfiguration(JavaPlugin.getDefault().getJavaTextTools().getColorManager(), store, null, null, false));
 		fViewer.setEditable(false);

 		fText= fViewer.getTextWidget();
 		gd= new GridData(GridData.BEGINNING | GridData.FILL_BOTH);
 		fText.setLayoutData(gd);
 		fText.setForeground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_FOREGROUND));
 		fText.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_BACKGROUND));

 		fText.addKeyListener(new KeyListener() {

 			public void keyPressed(KeyEvent e)  {
 				if (e.character == 0x1B) // ESC
 					fShell.dispose();
 			}

 			public void keyReleased(KeyEvent e) {}
 		});

 		// Status field
 		if (statusFieldText != null) {

 			// Horizontal separator line
 			fSeparator= new Label(composite, SWT.SEPARATOR | SWT.HORIZONTAL | SWT.LINE_DOT);
 			fSeparator.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 			// Status field label
 			fStatusField= new Label(composite, SWT.RIGHT);
 			fStatusField.setText(statusFieldText);
 			Font font= fStatusField.getFont();
 			FontData[] fontDatas= font.getFontData();
 			for (int i= 0; i < fontDatas.length; i++)
 				fontDatas[i].setHeight(fontDatas[i].getHeight() * 9 / 10);
 			fStatusTextFont= new Font(fStatusField.getDisplay(), fontDatas);
 			fStatusField.setFont(fStatusTextFont);
 			GridData gd2= new GridData(GridData.FILL_VERTICAL | GridData.FILL_HORIZONTAL | GridData.HORIZONTAL_ALIGN_BEGINNING | GridData.VERTICAL_ALIGN_BEGINNING);
 			fStatusField.setLayoutData(gd2);

 			// Regarding the color see bug 41128
 			fStatusField.setForeground(display.getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW));

 			fStatusField.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
 		}

 		addDisposeListener(this);
 	}

 	/**
 	 * Creates a default information control with the given shell as parent. The given
 	 * information presenter is used to process the information to be displayed. The given
 	 * styles are applied to the created styled text widget.
 	 *
 	 * @param parent the parent shell
 	 * @param style the additional styles for the styled text widget
 	 */
 	public SourceViewerInformationControl(Shell parent,int style) {
 		this(parent, SWT.NO_TRIM | SWT.TOOL, style);
 	}

 	/**
 	 * Creates a default information control with the given shell as parent. The given
 	 * information presenter is used to process the information to be displayed. The given
 	 * styles are applied to the created styled text widget.
 	 *
 	 * @param parent the parent shell
 	 * @param style the additional styles for the styled text widget
 	 * @param statusFieldText the text to be used in the optional status field
 	 *                         or <code>null</code> if the status field should be hidden
 	 * @since 3.0
 	 */
 	public SourceViewerInformationControl(Shell parent,int style, String statusFieldText) {
 		this(parent, SWT.NO_TRIM | SWT.TOOL, style, statusFieldText);
 	}

 	/**
 	 * Creates a default information control with the given shell as parent.
 	 * No information presenter is used to process the information
 	 * to be displayed. No additional styles are applied to the styled text widget.
 	 *
 	 * @param parent the parent shell
 	 */
 	public SourceViewerInformationControl(Shell parent) {
 		this(parent, SWT.NONE);
 	}

 	/**
 	 * Creates a default information control with the given shell as parent.
 	 * No information presenter is used to process the information
 	 * to be displayed. No additional styles are applied to the styled text widget.
 	 *
 	 * @param parent the parent shell
 	 * @param statusFieldText the text to be used in the optional status field
 	 *                         or <code>null</code> if the status field should be hidden
 	 * @since 3.0
 	 */
 	public SourceViewerInformationControl(Shell parent, String statusFieldText) {
 		this(parent, SWT.NONE, statusFieldText);
 	}

 	/*
 	 * @see org.eclipse.jface.text.IInformationControlExtension2#setInput(java.lang.Object)
 	 */
 	public void setInput(Object input) {
 		if (input instanceof String)
 			setInformation((String)input);
 		else
 			setInformation(null);
 	}

 	/*
 	 * @see IInformationControl#setInformation(String)
 	 */
 	public void setInformation(String content) {
 		if (content == null) {
 			fViewer.setInput(null);
 			return;
 		}

 		IDocument doc= new Document(content);
 		JavaPlugin.getDefault().getJavaTextTools().setupJavaDocumentPartitioner(doc);
 		fViewer.setInput(doc);
 	}

 	/*
 	 * @see IInformationControl#setVisible(boolean)
 	 */
 	public void setVisible(boolean visible) {
 			fShell.setVisible(visible);
 	}

 	/**
 	 * {@inheritDoc}
 	 * @since 3.0
 	 */
 	public void widgetDisposed(DisposeEvent event) {
 		if (fStatusTextFont != null && !fStatusTextFont.isDisposed())
 			fStatusTextFont.dispose();

 		fStatusTextFont= null;
 		fShell= null;
 		fText= null;
 	}

 	/**
 	 * {@inheritDoc}
 	 */
 	public final void dispose() {
 		if (fShell != null && !fShell.isDisposed())
 			fShell.dispose();
 		else
 			widgetDisposed(null);
 	}

 	/*
 	 * @see IInformationControl#setSize(int, int)
 	 */
 	public void setSize(int width, int height) {

 		if (fStatusField != null) {
 			GridData gd= (GridData)fViewer.getTextWidget().getLayoutData();
 			Point statusSize= fStatusField.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
 			Point separatorSize= fSeparator.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
 			gd.heightHint= height - statusSize.y - separatorSize.y;
 		}
 		fShell.setSize(width, height);

 		if (fStatusField != null)
 			fShell.pack(true);
 	}

 	/*
 	 * @see IInformationControl#setLocation(Point)
 	 */
 	public void setLocation(Point location) {
 		Rectangle trim= fShell.computeTrim(0, 0, 0, 0);
 		Point textLocation= fText.getLocation();
 		location.x += trim.x - textLocation.x;
 		location.y += trim.y - textLocation.y;
 		fShell.setLocation(location);
 	}

 	/*
 	 * @see IInformationControl#setSizeConstraints(int, int)
 	 */
 	public void setSizeConstraints(int maxWidth, int maxHeight) {
 		maxWidth= maxHeight;
 	}

 	/*
 	 * @see IInformationControl#computeSizeHint()
 	 */
 	public Point computeSizeHint() {
 		return fShell.computeSize(SWT.DEFAULT, SWT.DEFAULT);
 	}

 	/*
 	 * @see IInformationControl#addDisposeListener(DisposeListener)
 	 */
 	public void addDisposeListener(DisposeListener listener) {
 		fShell.addDisposeListener(listener);
 	}

 	/*
 	 * @see IInformationControl#removeDisposeListener(DisposeListener)
 	 */
 	public void removeDisposeListener(DisposeListener listener) {
 		fShell.removeDisposeListener(listener);
 	}

 	/*
 	 * @see IInformationControl#setForegroundColor(Color)
 	 */
 	public void setForegroundColor(Color foreground) {
 		fText.setForeground(foreground);
 	}

 	/*
 	 * @see IInformationControl#setBackgroundColor(Color)
 	 */
 	public void setBackgroundColor(Color background) {
 		fText.setBackground(background);
 	}

 	/*
 	 * @see IInformationControl#isFocusControl()
 	 */
 	public boolean isFocusControl() {
 		return fText.isFocusControl();
 	}

 	/*
 	 * @see IInformationControl#setFocus()
 	 */
 	public void setFocus() {
 		fShell.forceFocus();
 		fText.setFocus();
 	}

 	/*
 	 * @see IInformationControl#addFocusListener(FocusListener)
 	 */
 	public void addFocusListener(FocusListener listener) {
 		fText.addFocusListener(listener);
 	}

 	/*
 	 * @see IInformationControl#removeFocusListener(FocusListener)
 	 */
 	public void removeFocusListener(FocusListener listener) {
 		fText.removeFocusListener(listener);
 	}

 	/*
 	 * @see IInformationControlExtension#hasContents()
 	 */
 	public boolean hasContents() {
 		return fText.getCharCount() > 0;
 	}

 	protected ISourceViewer getViewer()  {
 		return fViewer;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2005 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdt.internal.ui.text.java.hover;

	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.StyledText;
	import org.eclipse.swt.events.DisposeEvent;
	import org.eclipse.swt.events.DisposeListener;
	import org.eclipse.swt.events.FocusListener;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.KeyListener;
	import org.eclipse.swt.graphics.Color;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.graphics.FontData;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.graphics.Rectangle;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;

	import org.eclipse.jface.preference.IPreferenceStore;

	import org.eclipse.jface.text.Document;
	import org.eclipse.jface.text.IDocument;
	import org.eclipse.jface.text.IInformationControl;
	import org.eclipse.jface.text.IInformationControlExtension;
	import org.eclipse.jface.text.source.ISourceViewer;
	import org.eclipse.jface.text.source.SourceViewer;

	import org.eclipse.jdt.internal.ui.JavaPlugin;
	import org.eclipse.jdt.internal.ui.javaeditor.JavaSourceViewer;
	import org.eclipse.jdt.internal.ui.text.SimpleJavaSourceViewerConfiguration;

	/**
	* Source viewer based implementation of <code>IInformationControl</code>.
	* Displays information in a source viewer.
	*
	* @since 3.0
	*/
	public class SourceViewerInformationControl implements IInformationControl, IInformationControlExtension, DisposeListener {

	/** Border thickness in pixels. */
	private static final int BORDER= 1;
	/** The control's shell */
	private Shell fShell;
	/** The control's text widget */
	private StyledText fText;
	/** The control's source viewer */
	private SourceViewer fViewer;
	/**
	* The optional status field.
	*
	* @since 3.0
	*/
	private Label fStatusField;
	/**
	* The separator for the optional status field.
	*
	* @since 3.0
	*/
	private Label fSeparator;
	/**
	* The font of the optional status text label.
	*
	* @since 3.0
	*/
	private Font fStatusTextFont;

	/**
	* Creates a default information control with the given shell as parent. The given
	* information presenter is used to process the information to be displayed. The given
	* styles are applied to the created styled text widget.
	*
	* @param parent the parent shell
	* @param shellStyle the additional styles for the shell
	* @param style the additional styles for the styled text widget
	*/
	public SourceViewerInformationControl(Shell parent, int shellStyle, int style) {
	this(parent, shellStyle, style, null);
	}

	/**
	* Creates a default information control with the given shell as parent. The given
	* information presenter is used to process the information to be displayed. The given
	* styles are applied to the created styled text widget.
	*
	* @param parent the parent shell
	* @param shellStyle the additional styles for the shell
	* @param style the additional styles for the styled text widget
	* @param statusFieldText the text to be used in the optional status field
	* or <code>null</code> if the status field should be hidden
	* @since 3.0
	*/
	public SourceViewerInformationControl(Shell parent, int shellStyle, int style, String statusFieldText) {
	GridLayout layout;
	GridData gd;

	fShell= new Shell(parent, SWT.NO_FOCUS \| SWT.ON_TOP \| shellStyle);
	Display display= fShell.getDisplay();
	fShell.setBackground(display.getSystemColor(SWT.COLOR_BLACK));

	Composite composite= fShell;
	layout= new GridLayout(1, false);
	int border= ((shellStyle & SWT.NO_TRIM) == 0) ? 0 : BORDER;
	layout.marginHeight= border;
	layout.marginWidth= border;
	composite.setLayout(layout);
	gd= new GridData(GridData.FILL_HORIZONTAL);
	composite.setLayoutData(gd);

	if (statusFieldText != null) {
	composite= new Composite(composite, SWT.NONE);
	layout= new GridLayout(1, false);
	layout.marginHeight= 0;
	layout.marginWidth= 0;
	composite.setLayout(layout);
	gd= new GridData(GridData.FILL_BOTH);
	composite.setLayoutData(gd);
	composite.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
	composite.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
	}

	// Source viewer
	IPreferenceStore store= JavaPlugin.getDefault().getCombinedPreferenceStore();
	fViewer= new JavaSourceViewer(composite, null, null, false, style, store);
	fViewer.configure(new SimpleJavaSourceViewerConfiguration(JavaPlugin.getDefault().getJavaTextTools().getColorManager(), store, null, null, false));
	fViewer.setEditable(false);

	fText= fViewer.getTextWidget();
	gd= new GridData(GridData.BEGINNING \| GridData.FILL_BOTH);
	fText.setLayoutData(gd);
	fText.setForeground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_FOREGROUND));
	fText.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_BACKGROUND));

	fText.addKeyListener(new KeyListener() {

	public void keyPressed(KeyEvent e) {
	if (e.character == 0x1B) // ESC
	fShell.dispose();
	}

	public void keyReleased(KeyEvent e) {}
	});

	// Status field
	if (statusFieldText != null) {

	// Horizontal separator line
	fSeparator= new Label(composite, SWT.SEPARATOR \| SWT.HORIZONTAL \| SWT.LINE_DOT);
	fSeparator.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	// Status field label
	fStatusField= new Label(composite, SWT.RIGHT);
	fStatusField.setText(statusFieldText);
	Font font= fStatusField.getFont();
	FontData[] fontDatas= font.getFontData();
	for (int i= 0; i < fontDatas.length; i++)
	fontDatas[i].setHeight(fontDatas[i].getHeight() * 9 / 10);
	fStatusTextFont= new Font(fStatusField.getDisplay(), fontDatas);
	fStatusField.setFont(fStatusTextFont);
	GridData gd2= new GridData(GridData.FILL_VERTICAL \| GridData.FILL_HORIZONTAL \| GridData.HORIZONTAL_ALIGN_BEGINNING \| GridData.VERTICAL_ALIGN_BEGINNING);
	fStatusField.setLayoutData(gd2);

	// Regarding the color see bug 41128
	fStatusField.setForeground(display.getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW));

	fStatusField.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
	}

	addDisposeListener(this);
	}

	/**
	* Creates a default information control with the given shell as parent. The given
	* information presenter is used to process the information to be displayed. The given
	* styles are applied to the created styled text widget.
	*
	* @param parent the parent shell
	* @param style the additional styles for the styled text widget
	*/
	public SourceViewerInformationControl(Shell parent,int style) {
	this(parent, SWT.NO_TRIM \| SWT.TOOL, style);
	}

	/**
	* Creates a default information control with the given shell as parent. The given
	* information presenter is used to process the information to be displayed. The given
	* styles are applied to the created styled text widget.
	*
	* @param parent the parent shell
	* @param style the additional styles for the styled text widget
	* @param statusFieldText the text to be used in the optional status field
	* or <code>null</code> if the status field should be hidden
	* @since 3.0
	*/
	public SourceViewerInformationControl(Shell parent,int style, String statusFieldText) {
	this(parent, SWT.NO_TRIM \| SWT.TOOL, style, statusFieldText);
	}

	/**
	* Creates a default information control with the given shell as parent.
	* No information presenter is used to process the information
	* to be displayed. No additional styles are applied to the styled text widget.
	*
	* @param parent the parent shell
	*/
	public SourceViewerInformationControl(Shell parent) {
	this(parent, SWT.NONE);
	}

	/**
	* Creates a default information control with the given shell as parent.
	* No information presenter is used to process the information
	* to be displayed. No additional styles are applied to the styled text widget.
	*
	* @param parent the parent shell
	* @param statusFieldText the text to be used in the optional status field
	* or <code>null</code> if the status field should be hidden
	* @since 3.0
	*/
	public SourceViewerInformationControl(Shell parent, String statusFieldText) {
	this(parent, SWT.NONE, statusFieldText);
	}

	/*
	* @see org.eclipse.jface.text.IInformationControlExtension2#setInput(java.lang.Object)
	*/
	public void setInput(Object input) {
	if (input instanceof String)
	setInformation((String)input);
	else
	setInformation(null);
	}

	/*
	* @see IInformationControl#setInformation(String)
	*/
	public void setInformation(String content) {
	if (content == null) {
	fViewer.setInput(null);
	return;
	}

	IDocument doc= new Document(content);
	JavaPlugin.getDefault().getJavaTextTools().setupJavaDocumentPartitioner(doc);
	fViewer.setInput(doc);
	}

	/*
	* @see IInformationControl#setVisible(boolean)
	*/
	public void setVisible(boolean visible) {
	fShell.setVisible(visible);
	}

	/**
	* {@inheritDoc}
	* @since 3.0
	*/
	public void widgetDisposed(DisposeEvent event) {
	if (fStatusTextFont != null && !fStatusTextFont.isDisposed())
	fStatusTextFont.dispose();

	fStatusTextFont= null;
	fShell= null;
	fText= null;
	}

	/**
	* {@inheritDoc}
	*/
	public final void dispose() {
	if (fShell != null && !fShell.isDisposed())
	fShell.dispose();
	else
	widgetDisposed(null);
	}

	/*
	* @see IInformationControl#setSize(int, int)
	*/
	public void setSize(int width, int height) {

	if (fStatusField != null) {
	GridData gd= (GridData)fViewer.getTextWidget().getLayoutData();
	Point statusSize= fStatusField.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
	Point separatorSize= fSeparator.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
	gd.heightHint= height - statusSize.y - separatorSize.y;
	}
	fShell.setSize(width, height);

	if (fStatusField != null)
	fShell.pack(true);
	}

	/*
	* @see IInformationControl#setLocation(Point)
	*/
	public void setLocation(Point location) {
	Rectangle trim= fShell.computeTrim(0, 0, 0, 0);
	Point textLocation= fText.getLocation();
	location.x += trim.x - textLocation.x;
	location.y += trim.y - textLocation.y;
	fShell.setLocation(location);
	}

	/*
	* @see IInformationControl#setSizeConstraints(int, int)
	*/
	public void setSizeConstraints(int maxWidth, int maxHeight) {
	maxWidth= maxHeight;
	}

	/*
	* @see IInformationControl#computeSizeHint()
	*/
	public Point computeSizeHint() {
	return fShell.computeSize(SWT.DEFAULT, SWT.DEFAULT);
	}

	/*
	* @see IInformationControl#addDisposeListener(DisposeListener)
	*/
	public void addDisposeListener(DisposeListener listener) {
	fShell.addDisposeListener(listener);
	}

	/*
	* @see IInformationControl#removeDisposeListener(DisposeListener)
	*/
	public void removeDisposeListener(DisposeListener listener) {
	fShell.removeDisposeListener(listener);
	}

	/*
	* @see IInformationControl#setForegroundColor(Color)
	*/
	public void setForegroundColor(Color foreground) {
	fText.setForeground(foreground);
	}

	/*
	* @see IInformationControl#setBackgroundColor(Color)
	*/
	public void setBackgroundColor(Color background) {
	fText.setBackground(background);
	}

	/*
	* @see IInformationControl#isFocusControl()
	*/
	public boolean isFocusControl() {
	return fText.isFocusControl();
	}

	/*
	* @see IInformationControl#setFocus()
	*/
	public void setFocus() {
	fShell.forceFocus();
	fText.setFocus();
	}

	/*
	* @see IInformationControl#addFocusListener(FocusListener)
	*/
	public void addFocusListener(FocusListener listener) {
	fText.addFocusListener(listener);
	}

	/*
	* @see IInformationControl#removeFocusListener(FocusListener)
	*/
	public void removeFocusListener(FocusListener listener) {
	fText.removeFocusListener(listener);
	}

	/*
	* @see IInformationControlExtension#hasContents()
	*/
	public boolean hasContents() {
	return fText.getCharCount() > 0;
	}

	protected ISourceViewer getViewer() {
	return fViewer;
	}
	}