/*******************************************************************************
* Copyright (c) 2000, 2013 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.ant.internal.ui.editor;
import org.eclipse.ant.internal.ui.AntSourceViewerConfiguration;
import org.eclipse.ant.internal.ui.editor.text.AntDocumentSetupParticipant;
import org.eclipse.jface.resource.JFaceResources;
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.SourceViewer;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
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.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.Shell;
public class AntSourceViewerInformationControl implements IInformationControl, IInformationControlExtension, DisposeListener {
/** The control's shell */
private Shell fShell;
/** The control's source viewer */
private SourceViewer fViewer;
/** The control's text widget */
private StyledText fText;
public AntSourceViewerInformationControl(Shell parent) {
GridLayout layout;
GridData gd;
fShell = new Shell(parent, SWT.ON_TOP | SWT.TOOL);
Display display = fShell.getDisplay();
fShell.setBackground(display.getSystemColor(SWT.COLOR_BLACK));
Composite composite = fShell;
layout = new GridLayout(1, false);
layout.marginHeight = 0;
layout.marginWidth = 0;
composite.setLayout(layout);
gd = new GridData(GridData.FILL_HORIZONTAL);
composite.setLayoutData(gd);
fViewer = createViewer(composite);
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() {
@Override
public void keyPressed(KeyEvent e) {
if (e.character == 0x1B) // ESC
fShell.dispose();
}
@Override
public void keyReleased(KeyEvent e) {
// do nothing
}
});
}
private SourceViewer createViewer(Composite parent) {
SourceViewer viewer = new SourceViewer(parent, null, SWT.NONE);
SourceViewerConfiguration configuration = new AntSourceViewerConfiguration();
viewer.configure(configuration);
viewer.setEditable(false);
Font font = JFaceResources.getFont(JFaceResources.TEXT_FONT);
viewer.getTextWidget().setFont(font);
return viewer;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#setInformation(java.lang.String)
*/
@Override
public void setInformation(String content) {
if (content == null) {
fViewer.setInput(null);
return;
}
IDocument document = new Document(content);
new AntDocumentSetupParticipant().setup(document);
fViewer.setDocument(document);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#setSizeConstraints(int, int)
*/
@Override
public void setSizeConstraints(int maxWidth, int maxHeight) {
// do nothing
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#computeSizeHint()
*/
@Override
public Point computeSizeHint() {
return fShell.computeSize(SWT.DEFAULT, SWT.DEFAULT);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#setVisible(boolean)
*/
@Override
public void setVisible(boolean visible) {
fShell.setVisible(visible);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#setSize(int, int)
*/
@Override
public void setSize(int width, int height) {
fShell.setSize(width, height);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#setLocation(org.eclipse.swt.graphics.Point)
*/
@Override
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);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#dispose()
*/
@Override
public void dispose() {
if (fShell != null && !fShell.isDisposed()) {
fShell.dispose();
} else {
widgetDisposed(null);
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#addDisposeListener(org.eclipse.swt.events.DisposeListener)
*/
@Override
public void addDisposeListener(DisposeListener listener) {
fShell.addDisposeListener(listener);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#removeDisposeListener(org.eclipse.swt.events.DisposeListener)
*/
@Override
public void removeDisposeListener(DisposeListener listener) {
fShell.removeDisposeListener(listener);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#setForegroundColor(org.eclipse.swt.graphics.Color)
*/
@Override
public void setForegroundColor(Color foreground) {
fText.setForeground(foreground);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#setBackgroundColor(org.eclipse.swt.graphics.Color)
*/
@Override
public void setBackgroundColor(Color background) {
fText.setBackground(background);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#isFocusControl()
*/
@Override
public boolean isFocusControl() {
return fText.isFocusControl();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#setFocus()
*/
@Override
public void setFocus() {
fShell.forceFocus();
fText.setFocus();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#addFocusListener(org.eclipse.swt.events.FocusListener)
*/
@Override
public void addFocusListener(FocusListener listener) {
fText.addFocusListener(listener);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControl#removeFocusListener(org.eclipse.swt.events.FocusListener)
*/
@Override
public void removeFocusListener(FocusListener listener) {
fText.removeFocusListener(listener);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.text.IInformationControlExtension#hasContents()
*/
@Override
public boolean hasContents() {
return fText.getCharCount() > 0;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.events.DisposeListener#widgetDisposed(org.eclipse.swt.events.DisposeEvent)
*/
@Override
public void widgetDisposed(DisposeEvent e) {
fShell = null;
fText = null;
}
}