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/*******************************************************************************
* Copyright (c) 2002, 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.ui.internal.cheatsheets.views;
import org.eclipse.jface.resource.*;
import org.eclipse.jface.util.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.ui.forms.widgets.*;
import org.eclipse.ui.internal.cheatsheets.CheatSheetStopWatch;
public abstract class Page {
protected Composite cheatSheetComposite;
protected final static int HORZ_SCROLL_INCREMENT = 20;
protected final static int VERT_SCROLL_INCREMENT = 20;
//Colors
protected Color backgroundColor;
private Color[] colorArray;
private final RGB bottomRGB = new RGB(255, 255, 255);
private final RGB midRGB = new RGB(242, 252, 254);
private final RGB topRGB = new RGB(232, 242, 254);
protected FormToolkit toolkit;
protected ScrolledForm form;
public Page() {
}
public Control getControl() {
return cheatSheetComposite;
}
public void createPart(Composite parent) {
init(parent.getDisplay());
cheatSheetComposite = new Composite(parent, SWT.NONE);
cheatSheetComposite.setRedraw(false);
GridLayout layout = new GridLayout();
layout.marginHeight = 0;
layout.marginWidth = 0;
layout.verticalSpacing = 0;
layout.horizontalSpacing = 0;
layout.numColumns = 1;
cheatSheetComposite.setLayout(layout);
cheatSheetComposite.setBackground(backgroundColor);
cheatSheetComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
createTitleArea(cheatSheetComposite);
createInfoArea(cheatSheetComposite);
cheatSheetComposite.setRedraw(true);
}
/**
* Creates the main composite area of the view.
*
* @param parent the SWT parent for the title area composite
* @return the created info area composite
*/
protected void createInfoArea(Composite parent) {
CheatSheetStopWatch.startStopWatch("Page.createInfoArea()"); //$NON-NLS-1$
toolkit = new FormToolkit(parent.getDisplay());
CheatSheetStopWatch.printLapTime("Page.createInfoArea()", "Time in Page.createInfoArea() after new FormToolkit(): "); //$NON-NLS-1$ //$NON-NLS-2$
form = toolkit.createScrolledForm(parent);
form.setDelayedReflow(true);
CheatSheetStopWatch.printLapTime("Page.createInfoArea()", "Time in Page.createInfoArea() after createScrolledForm(): "); //$NON-NLS-1$ //$NON-NLS-2$
form.setLayoutData(new GridData(GridData.FILL_BOTH));
CheatSheetStopWatch.printLapTime("Page.createInfoArea()", "Time in Page.createInfoArea() after setLayoutData(): "); //$NON-NLS-1$ //$NON-NLS-2$
TableWrapLayout layout = new TableWrapLayout();
CheatSheetStopWatch.printLapTime("Page.createInfoArea()", "Time in Page.createInfoArea() after new FormTableWrapLayout(): "); //$NON-NLS-1$ //$NON-NLS-2$
layout.numColumns = 2;
layout.verticalSpacing = 3;
form.getBody().setLayout(layout);
CheatSheetStopWatch.printLapTime("Page.createInfoArea()", "Time in Page.createInfoArea() end of method: "); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* Creates the cheatsheet's title areawhich will consists
* of a title and image.
*
* @param parent the SWT parent for the title area composite
*/
private void createTitleArea(Composite parent) {
// Message label
final CLabel messageLabel = new CLabel(parent, SWT.NONE);
messageLabel.setBackground(colorArray, new int[] { 85, 100 }, true);
messageLabel.setText(getTitle());
messageLabel.setFont(JFaceResources.getHeaderFont());
GridData ldata = new GridData(GridData.FILL_HORIZONTAL);
ldata.grabExcessHorizontalSpace = true;
messageLabel.setLayoutData(ldata);
final IPropertyChangeListener fontListener = new IPropertyChangeListener() {
public void propertyChange(PropertyChangeEvent event) {
if (JFaceResources.HEADER_FONT.equals(event.getProperty())) {
messageLabel.setFont(JFaceResources.getHeaderFont());
}
}
};
messageLabel.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent event) {
JFaceResources.getFontRegistry().removeListener(fontListener);
}
});
JFaceResources.getFontRegistry().addListener(fontListener);
GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
messageLabel.setLayoutData(gridData);
}
public void dispose() {
for (int i = 0; i < colorArray.length; i++) {
if (colorArray[i] != null)
colorArray[i].dispose();
}
if (cheatSheetComposite != null)
cheatSheetComposite.dispose();
if(toolkit != null) {
toolkit.dispose();
}
}
protected void init(Display display) {
// Get the background color for the cheatsheet controls
backgroundColor = JFaceColors.getBannerBackground(display);
colorArray = new Color[] { new Color(display, topRGB), new Color(display, midRGB), new Color(display, bottomRGB)};
}
protected abstract String getTitle();
}
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