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/*******************************************************************************
* Copyright (c) 2003 - 2005 University Of British Columbia 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:
* University Of British Columbia - initial API and implementation
*******************************************************************************/
package org.eclipse.mylar.bugzilla.ui.wizard;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.ui.IWorkbench;
/**
* Class that contains shared functions for the first page of the wizards that
* submit bug reports. This page provides the user with a list of items to
* choose from.
*/
public abstract class AbstractWizardListPage extends WizardPage implements
Listener {
/** The instance of the workbench */
protected IWorkbench workbench;
/** The list box for the list of items to choose from */
protected List listBox;
/** Status variable for the possible errors on this page */
protected IStatus listStatus;
/**
* Constructor for AbstractWizardListPage
*
* @param pageName
* the name of the page
* @param title
* the title of the page
* @param description
* the description text for the page
* @param workbench
* the instance of the workbench
*/
public AbstractWizardListPage(String pageName, String title,
String description, IWorkbench workbench) {
super(pageName);
setTitle(title);
setDescription(description);
this.workbench = workbench;
// set the status for the page
listStatus = new Status(IStatus.OK, "not_used", 0, "", null);
}
public abstract void createAdditionalControls(Composite parent);
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
*/
public void createControl(Composite parent) {
// create the composite to hold the widgets
GridData gd;
Composite composite = new Composite(parent, SWT.NULL);
// create the desired layout for this wizard page
GridLayout gl = new GridLayout();
int ncol = 1;
gl.numColumns = ncol;
composite.setLayout(gl);
// create the bug report label
Label label = new Label(composite, SWT.NONE);
label.setText(getTableName());
FontData fontData = label.getFont().getFontData()[0];
fontData.setStyle(SWT.BOLD | fontData.getStyle());
int height = (int) Math.abs(fontData.getHeight() * 1.25);
fontData.setHeight(height);
Font font = new Font(null, fontData);
label.setFont(font);
// create the list of bug reports
gd = new GridData(GridData.FILL_HORIZONTAL);
gd.heightHint = 200;
listBox = new List(composite, SWT.SINGLE | SWT.BORDER | SWT.READ_ONLY
| SWT.V_SCROLL);
listBox.setLayoutData(gd);
createLine(composite, ncol);
// Each wizard has different types of items to add to the list
populateList();
createAdditionalControls(composite);
// set the composite as the control for this page
setControl(composite);
addListeners();
}
public abstract String getTableName();
/**
* Populate the list of items
*/
abstract protected void populateList();
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
*/
abstract public void handleEvent(Event event);
/**
* A helper function for "handleEvent"
*
* @param event
* the event which occurred
* @param errorMessage
* the error message unique to the wizard calling this function
*/
protected void handleEventHelper(Event event, String errorMessage) {
// Initialize a variable with the no error status
Status status = new Status(IStatus.OK, "not_used", 0, "", null);
// If the event is triggered by the list of items, respond with the
// corresponding status
if (event.widget == listBox) {
if (listBox.getSelectionIndex() == -1)
status = new Status(IStatus.ERROR, "not_used", 0, errorMessage,
null);
listStatus = status;
}
// Show the most serious error
applyToStatusLine(listStatus);
getWizard().getContainer().updateButtons();
}
/**
* Applies the status to the status line of a dialog page.
*
* @param status
* The status to apply to the status line
*/
protected void applyToStatusLine(IStatus status) {
String message = status.getMessage();
if (message.length() == 0)
message = null;
switch (status.getSeverity()) {
case IStatus.OK:
setErrorMessage(null);
setMessage(message);
break;
case IStatus.WARNING:
setErrorMessage(null);
setMessage(message, WizardPage.WARNING);
break;
case IStatus.INFO:
setErrorMessage(null);
setMessage(message, WizardPage.INFORMATION);
break;
default:
setErrorMessage(null);
setMessage(message, WizardPage.ERROR);
break;
}
}
/**
* Create a separator line in the dialog
*
* @param parent
* The composite to create the line on
* @param ncol
* The number of columns to span
*/
protected void createLine(Composite parent, int ncol) {
Label line = new Label(parent, SWT.SEPARATOR | SWT.HORIZONTAL
| SWT.BOLD);
GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.horizontalSpan = ncol;
line.setLayoutData(gridData);
}
@Override
public boolean canFlipToNextPage() {
if (getErrorMessage() != null)
return false;
if (listBox.getSelectionIndex() != -1)
return true;
return false;
}
/**
* Add any listeners that we need
*/
protected void addListeners() {
listBox.addListener(SWT.Selection, this);
}
}
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