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/*******************************************************************************
* Copyright (c) 2006, 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.jface.dialogs;
import org.eclipse.jface.fieldassist.DecoratedField;
import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
import org.eclipse.jface.fieldassist.TextControlCreator;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
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.Layout;
import org.eclipse.swt.widgets.Text;
/**
* Instances of this class provide a message area to display a message and an
* associated image.
* <p>
* This class is not intended to be extended by clients.
* </p>
*
* @since 3.2
* @deprecated As of 3.3, this class is no longer necessary.
*
*/
public class ImageAndMessageArea extends Composite {
private int BORDER_MARGIN = IDialogConstants.HORIZONTAL_SPACING / 2;
private DecoratedField messageField;
private Composite container;
/**
* Constructs a new ImageAndMessageArea with an empty decorated field. Calls
* to <code>setText(String text)</code> and
* <code>setImage(Image image)</code> are required in order to fill the
* message area. Also, the instance will be invisible when initially
* created.
* <p>
* The style bit <code>SWT.WRAP</code> should be used if a larger message
* area is desired.
* </p>
*
* @param parent
* the parent composite
* @param style
* the SWT style bits. Using SWT.WRAP will create a larger
* message area.
*/
public ImageAndMessageArea(Composite parent, int style) {
super(parent, style);
container = new Composite(this, style);
GridLayout glayout = new GridLayout();
glayout.numColumns = 2;
glayout.marginWidth = 0;
glayout.marginHeight = 0;
glayout.marginTop = BORDER_MARGIN;
glayout.marginBottom = BORDER_MARGIN;
container.setLayout(glayout);
messageField = new DecoratedField(container, SWT.READ_ONLY | style,
new TextControlCreator());
setFont(JFaceResources.getDialogFont());
GridData gd = new GridData(SWT.FILL, SWT.FILL, true, true);
int lineHeight = ((Text) messageField.getControl()).getLineHeight();
if ((style & SWT.WRAP) > 0)
gd.heightHint = 2 * lineHeight;
else
gd.heightHint = lineHeight;
messageField.getLayoutControl().setLayoutData(gd);
addPaintListener(new PaintListener() {
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.events.PaintListener#paintControl(org.eclipse.swt.events.PaintEvent)
*/
public void paintControl(PaintEvent e) {
onPaint(e);
}
});
// sets the layout and size to account for the BORDER_MARGIN between
// the border drawn around the container and the decorated field.
setLayout(new Layout() {
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.widgets.Layout#layout(org.eclipse.swt.widgets.Composite,
* boolean)
*/
@Override
public void layout(Composite parent, boolean changed) {
Rectangle carea = getClientArea();
container.setBounds(carea.x + BORDER_MARGIN, carea.y
+ BORDER_MARGIN, carea.width - (2 * BORDER_MARGIN),
carea.height - (2 * BORDER_MARGIN));
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.widgets.Layout#computeSize(org.eclipse.swt.widgets.Composite,
* int, int, boolean)
*/
@Override
public Point computeSize(Composite parent, int wHint, int hHint,
boolean changed) {
Point size;
size = container.computeSize(wHint, hHint, changed);
// size set to account for the BORDER_MARGIN on
// all sides of the decorated field
size.x += 4;
size.y += 4;
return size;
}
});
setVisible(false);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.widgets.Control#setBackground(org.eclipse.swt.graphics.Color)
*/
@Override
public void setBackground(Color bg) {
super.setBackground(bg);
messageField.getLayoutControl().setBackground(bg);
messageField.getControl().setBackground(bg);
container.setBackground(bg);
}
/**
* Sets the text in the decorated field which will be displayed in the
* message area.
*
* @param text
* the text to be displayed in the message area
*
* @see org.eclipse.swt.widgets.Text#setText(String string)
*/
public void setText(String text) {
((Text) messageField.getControl()).setText(text);
}
/**
* Adds an image to decorated field to be shown in the message area.
*
* @param image
* desired image to be shown in the ImageAndMessageArea
*/
public void setImage(Image image) {
FieldDecorationRegistry registry = FieldDecorationRegistry.getDefault();
registry.registerFieldDecoration("messageImage", null, image); //$NON-NLS-1$
messageField.addFieldDecoration(registry
.getFieldDecoration("messageImage"), //$NON-NLS-1$
SWT.LEFT | SWT.TOP, false);
}
/**
* Draws the message area composite with rounded corners.
*/
private void onPaint(PaintEvent e) {
Rectangle carea = getClientArea();
e.gc.setForeground(getForeground());
// draws the polyline to be rounded in a 2 pixel squared area
e.gc.drawPolyline(new int[] { carea.x, carea.y + carea.height - 1,
carea.x, carea.y + 2, carea.x + 2, carea.y,
carea.x + carea.width - 3, carea.y, carea.x + carea.width - 1,
carea.y + 2, carea.x + carea.width - 1,
carea.y + carea.height - 1 });
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.widgets.Control#setFont(org.eclipse.swt.graphics.Font)
*/
@Override
public void setFont(Font font) {
super.setFont(font);
((Text) messageField.getControl()).setFont(font);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.widgets.Control#setToolTipText(java.lang.String)
*/
@Override
public void setToolTipText(String text) {
super.setToolTipText(text);
((Text) messageField.getControl()).setToolTipText(text);
}
}
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