/*******************************************************************************
* Copyright (c) 2000, 2006 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.eclipsetrader.ui.internal.application;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
/**
* Added a Details button to the MessageDialog to show the exception
* stack trace.
*/
public class InternalErrorDialog extends MessageDialog {
private Throwable detail;
private int detailButtonID = -1;
private Text text;
//Workaround. SWT does not seem to set the default button if
//there is not control with focus. Bug: 14668
private int defaultButtonIndex = 0;
/**
* Size of the text in lines.
*/
private static final int TEXT_LINE_COUNT = 15;
/**
* Create a new dialog.
*
* @param parentShell the parent shell
* @param dialogTitle the title
* @param dialogTitleImage the title image
* @param dialogMessage the message
* @param detail the error to display
* @param dialogImageType the type of image
* @param dialogButtonLabels the button labels
* @param defaultIndex the default selected button index
*/
public InternalErrorDialog(Shell parentShell, String dialogTitle, Image dialogTitleImage, String dialogMessage, Throwable detail, int dialogImageType, String[] dialogButtonLabels, int defaultIndex) {
super(parentShell, dialogTitle, dialogTitleImage, dialogMessage, dialogImageType, dialogButtonLabels, defaultIndex);
defaultButtonIndex = defaultIndex;
this.detail = detail;
setShellStyle(getShellStyle() | SWT.APPLICATION_MODAL);
}
//Workaround. SWT does not seem to set rigth the default button if
//there is not control with focus. Bug: 14668
@Override
public int open() {
create();
Button b = getButton(defaultButtonIndex);
b.setFocus();
b.getShell().setDefaultButton(b);
return super.open();
}
/**
* Set the detail button;
* @param index the detail button index
*/
public void setDetailButton(int index) {
detailButtonID = index;
}
/* (non-Javadoc)
* Method declared on Dialog.
*/
@Override
protected void buttonPressed(int buttonId) {
if (buttonId == detailButtonID) {
toggleDetailsArea();
}
else {
setReturnCode(buttonId);
close();
}
}
/**
* Toggles the unfolding of the details area. This is triggered by
* the user pressing the details button.
*/
private void toggleDetailsArea() {
Point windowSize = getShell().getSize();
Point oldSize = getContents().computeSize(SWT.DEFAULT, SWT.DEFAULT);
if (text != null) {
text.dispose();
text = null;
getButton(detailButtonID).setText(IDialogConstants.SHOW_DETAILS_LABEL);
}
else {
createDropDownText((Composite) getContents());
getButton(detailButtonID).setText(IDialogConstants.HIDE_DETAILS_LABEL);
}
Point newSize = getContents().computeSize(SWT.DEFAULT, SWT.DEFAULT);
getShell().setSize(new Point(windowSize.x, windowSize.y + newSize.y - oldSize.y));
}
/**
* Create this dialog's drop-down list component.
*
* @param parent the parent composite
*/
protected void createDropDownText(Composite parent) {
// create the list
text = new Text(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
text.setFont(parent.getFont());
// print the stacktrace in the text field
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PrintStream ps = new PrintStream(baos);
detail.printStackTrace(ps);
ps.flush();
baos.flush();
text.setText(baos.toString());
} catch (IOException e) {
}
GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL | GridData.GRAB_VERTICAL);
data.heightHint = text.getLineHeight() * TEXT_LINE_COUNT;
data.horizontalSpan = 2;
text.setLayoutData(data);
}
/**
* Convenience method to open a simple Yes/No question dialog.
*
* @param parent the parent shell of the dialog, or <code>null</code> if none
* @param title the dialog's title, or <code>null</code> if none
* @param message the message
* @param detail the error
* @param defaultIndex the default index of the button to select
* @return <code>true</code> if the user presses the OK button,
* <code>false</code> otherwise
*/
public static boolean openQuestion(Shell parent, String title, String message, Throwable detail, int defaultIndex) {
String[] labels;
if (detail == null) {
labels = new String[] {
IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL
};
}
else {
labels = new String[] {
IDialogConstants.YES_LABEL,
IDialogConstants.NO_LABEL,
IDialogConstants.SHOW_DETAILS_LABEL
};
}
InternalErrorDialog dialog = new InternalErrorDialog(parent, title, null, // accept the default window icon
message, detail, QUESTION, labels, defaultIndex);
if (detail != null) {
dialog.setDetailButton(2);
}
return dialog.open() == 0;
}
}