/*******************************************************************************
* Copyright (c) 2005, 2007 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.composite.views;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.forms.IFormColors;
import org.eclipse.ui.forms.ManagedForm;
import org.eclipse.ui.forms.events.IHyperlinkListener;
import org.eclipse.ui.forms.widgets.FormText;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.eclipse.ui.forms.widgets.ScrolledForm;
import org.eclipse.ui.forms.widgets.TableWrapData;
import org.eclipse.ui.forms.widgets.TableWrapLayout;
import org.eclipse.ui.internal.cheatsheets.CheatSheetPlugin;
import org.eclipse.ui.internal.cheatsheets.ICheatSheetResource;
import org.eclipse.ui.internal.cheatsheets.Messages;
import org.eclipse.ui.internal.cheatsheets.composite.model.AbstractTask;
import org.eclipse.ui.internal.cheatsheets.composite.model.SuccesorTaskFinder;
import org.eclipse.ui.internal.cheatsheets.composite.model.TaskStateUtilities;
import org.eclipse.ui.internal.cheatsheets.composite.parser.ICompositeCheatsheetTags;
import org.eclipse.ui.internal.cheatsheets.composite.parser.MarkupParser;
import org.eclipse.ui.internal.provisional.cheatsheets.ICompositeCheatSheetTask;
import org.eclipse.ui.internal.provisional.cheatsheets.IEditableTask;
import org.eclipse.ui.internal.provisional.cheatsheets.ITaskGroup;
/**
* The description panel of a composite cheat sheet panel. This panel shows the introduction
* message and depending upon the type and state of the task a selection of the following:
* Completion message
* A message indicating that the task has been skipped.
* A message indicating that a parent task has been skipped.
* A message indicating that the task is blocked.
* A message indicationg that a parent choice is already satisfied.
* A link to a successor task.
* All tasks completed message.
*/
public class DescriptionPanel {
public static final String REVIEW_IMAGE = "review"; //$NON-NLS-1$
private static final String GOTO_IMAGE = "goto"; //$NON-NLS-1$
private static final String SKIP_IMAGE = "skip"; //$NON-NLS-1$
private static final String START_IMAGE = "start"; //$NON-NLS-1$
private static final String WARNING_IMAGE = "warning"; //$NON-NLS-1$
private static final String INFORMATION_IMAGE = "info"; //$NON-NLS-1$
private Composite panel;
private Composite control;
private FormText upperText;
private FormText lowerText;
private ScrolledForm form;
protected DescriptionPanel() {}
public DescriptionPanel(ManagedForm mform, Composite parent) {
FormToolkit toolkit = mform.getToolkit();
control = new Composite(parent, SWT.NULL);
final GridLayout controlLayout = new GridLayout();
controlLayout.marginHeight = 0;
controlLayout.marginWidth = 0;
control.setLayout(controlLayout);
form = toolkit.createScrolledForm(control);
panel = form.getBody();
form.setLayoutData(new GridData(GridData.FILL_BOTH));
toolkit.adapt(panel);
TableWrapLayout layout = new TableWrapLayout();
panel.setLayout(layout);
upperText = mform.getToolkit().createFormText(panel, false);
mform.getToolkit().adapt(upperText, false, false);
Composite separator = toolkit.createCompositeSeparator(panel);
TableWrapData data = new TableWrapData();
data.align = TableWrapData.FILL;
data.grabHorizontal = true;
data.maxHeight = 1;
separator.setLayoutData(data);
lowerText = mform.getToolkit().createFormText(panel, false);
mform.getToolkit().adapt(lowerText, false, false);
upperText.marginWidth = 5;
upperText.marginHeight = 5;
upperText.setFont("header", JFaceResources.getHeaderFont()); //$NON-NLS-1$
upperText.setColor("title", toolkit.getColors().getColor(IFormColors.TITLE)); //$NON-NLS-1$
lowerText.marginWidth = 5;
lowerText.marginHeight = 5;
lowerText.setImage(START_IMAGE, CheatSheetPlugin.getPlugin().getImage(ICheatSheetResource.COMPOSITE_TASK_START));
lowerText.setImage(SKIP_IMAGE, CheatSheetPlugin.getPlugin().getImage(ICheatSheetResource.COMPOSITE_TASK_SKIP));
lowerText.setImage(GOTO_IMAGE, CheatSheetPlugin.getPlugin().getImage(ICheatSheetResource.COMPOSITE_GOTO_TASK));
lowerText.setImage(REVIEW_IMAGE, CheatSheetPlugin.getPlugin().getImage(ICheatSheetResource.COMPOSITE_TASK_REVIEW));
lowerText.setImage(WARNING_IMAGE, CheatSheetPlugin.getPlugin().getImage(ICheatSheetResource.WARNING));
lowerText.setImage(INFORMATION_IMAGE, CheatSheetPlugin.getPlugin().getImage(ICheatSheetResource.INFORMATION));
}
public Control getControl() {
return control;
}
public void addHyperlinkListener(IHyperlinkListener listener) {
lowerText.addHyperlinkListener(listener);
}
public void showDescription(final ICompositeCheatSheetTask task) {
StringBuffer upperMessage = new StringBuffer();
upperMessage.append("<form>"); //$NON-NLS-1$
upperMessage.append("<p><span color=\"title\" font=\"header\">"); //$NON-NLS-1$
upperMessage.append(MarkupParser.escapeText(task.getName()));
upperMessage.append("</span></p>"); //$NON-NLS-1$
upperMessage.append(MarkupParser.createParagraph(task.getDescription(), null));
upperMessage.append("</form>"); //$NON-NLS-1$
upperText.setText(upperMessage.toString(), true, false);
StringBuffer buf = new StringBuffer();
buf.append("<form>"); //$NON-NLS-1$
boolean startable = false;
boolean isBlocked = false;
boolean isSkippable = ((AbstractTask)task).isSkippable();
if (task.getState() == ICompositeCheatSheetTask.COMPLETED) {
buf.append(MarkupParser.createParagraph(task.getCompletionMessage(), null));
isSkippable = false;
} else if (task.getState() == ICompositeCheatSheetTask.SKIPPED) {
buf.append(MarkupParser.createParagraph(Messages.get().THIS_TASK_SKIPPED, INFORMATION_IMAGE));
isSkippable = false;
} else if (TaskStateUtilities.findSkippedAncestor(task) != null) {
ICompositeCheatSheetTask skipped = TaskStateUtilities.findSkippedAncestor(task);
String skipParentMsg = NLS.bind(Messages.get().PARENT_SKIPPED,
(new Object[] {MarkupParser.escapeText((skipped.getName()))}));
buf.append(MarkupParser.createParagraph(skipParentMsg, WARNING_IMAGE));
isSkippable = false;
} else if (TaskStateUtilities.findCompletedAncestor(task) != null) {
ICompositeCheatSheetTask completed = TaskStateUtilities.findCompletedAncestor(task);
String completedParentMsg = NLS.bind(Messages.get().PARENT_COMPLETED,
(new Object[] {MarkupParser.escapeText(completed.getName())}));
buf.append(MarkupParser.createParagraph(completedParentMsg, WARNING_IMAGE));
isSkippable = false;
} else if (!task.requiredTasksCompleted()) {
isBlocked = true;
showBlockingTasks(Messages.get().COMPOSITE_PAGE_BLOCKED, task, buf);
} else if (TaskStateUtilities.findBlockedAncestor(task) != null) {
isBlocked = true;
ICompositeCheatSheetTask blockedAncestor = TaskStateUtilities.findBlockedAncestor(task);
String blockingAncestorMsg = NLS.bind(Messages.get().PARENT_BLOCKED,
(new Object[] {MarkupParser.escapeText(blockedAncestor.getName())}));
showBlockingTasks(blockingAncestorMsg , blockedAncestor, buf);
} else {
startable = task instanceof IEditableTask && task.getState() == ICompositeCheatSheetTask.NOT_STARTED;
}
if (startable) {
addHyperlink(buf, CompositeCheatSheetPage.START_HREF, START_IMAGE, Messages.get().COMPOSITE_PAGE_START_TASK);
}
if (task instanceof IEditableTask && task.getState() == ICompositeCheatSheetTask.COMPLETED ) {
addHyperlink(buf, CompositeCheatSheetPage.REVIEW_TAG, REVIEW_IMAGE, Messages.get().COMPOSITE_PAGE_REVIEW_TASK);
}
if (isSkippable) {
String skipMessage;
if (task instanceof ITaskGroup) {
skipMessage = Messages.get().COMPOSITE_PAGE_SKIP_TASK_GROUP;
} else {
skipMessage = Messages.get().COMPOSITE_PAGE_SKIP_TASK;
}
addHyperlink(buf, CompositeCheatSheetPage.SKIP_HREF, SKIP_IMAGE, skipMessage);
}
if (!startable && !isBlocked) {
showSuccesorTaskLinks(task, buf);
}
buf.append("</form>"); //$NON-NLS-1$
lowerText.setText(buf.toString(), true, false);
getControl().setData(ICompositeCheatsheetTags.TASK, task);
form.reflow(true);
}
private void showBlockingTasks(String message, final ICompositeCheatSheetTask task, StringBuffer buf) {
buf.append("<p/>"); //$NON-NLS-1$
buf.append("<p>"); //$NON-NLS-1$
buf.append("<img href=\""); //$NON-NLS-1$
buf.append(WARNING_IMAGE);
buf.append("\"/> "); //$NON-NLS-1$
buf.append(message);
buf.append("</p>"); //$NON-NLS-1$// Add the list of blocking tasks
ICompositeCheatSheetTask[] requiredTasks = task.getRequiredTasks();
for (int i = 0; i < requiredTasks.length; i++) {
warnOfIncompleteTask(buf, requiredTasks[i]);
}
buf.append("<p>"); //$NON-NLS-1$
buf.append("</p>"); //$NON-NLS-1$
}
private void addHyperlink(StringBuffer buf, String href, String imageRef, String message) {
buf.append("<p><a href=\""); //$NON-NLS-1$
buf.append(href);
buf.append("\">"); //$NON-NLS-1$
buf.append("<img href=\""); //$NON-NLS-1$
buf.append(imageRef);
buf.append("\"/> "); //$NON-NLS-1$
buf.append(message);
buf.append("</a></p>"); //$NON-NLS-1$
}
/*
* If this task is incomplete create a message to that effect
*/
private void warnOfIncompleteTask(StringBuffer buf, ICompositeCheatSheetTask task) {
if (task.getState() != ICompositeCheatSheetTask.COMPLETED &&
task.getState() != ICompositeCheatSheetTask.SKIPPED ) {
buf.append("<li>"); //$NON-NLS-1$
buf.append("<a href=\""); //$NON-NLS-1$
buf.append(CompositeCheatSheetPage.GOTO_TASK_TAG);
buf.append(task.getId());
buf.append("\">"); //$NON-NLS-1$
buf.append(NLS.bind(Messages.get().COMPOSITE_PAGE_TASK_NOT_COMPLETE, (new Object[]
{MarkupParser.escapeText(task.getName())})));
buf.append("</a>"); //$NON-NLS-1$
buf.append("</li>"); //$NON-NLS-1$
}
}
private void showSuccesorTaskLinks(ICompositeCheatSheetTask task, StringBuffer buf) {
// Add the links to the next tasks
ICompositeCheatSheetTask[] successorTasks = new SuccesorTaskFinder(task).getRecommendedSuccessors();
for (int i = 0; i < successorTasks.length; i++) {
ICompositeCheatSheetTask successor = successorTasks[i];
String message = NLS.bind(Messages.get().COMPOSITE_PAGE_GOTO_TASK, (new Object[]
{MarkupParser.escapeText(successor.getName())}));
addHyperlink(buf, CompositeCheatSheetPage.GOTO_TASK_TAG + successor.getId(), GOTO_IMAGE, message);
}
}
}