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/*******************************************************************************
* Copyright (c) 2004 - 2006 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.mylyn.internal.tasks.ui.views;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.mylyn.internal.tasks.ui.ITasksUiConstants;
import org.eclipse.mylyn.tasks.core.AbstractRepositoryQuery;
import org.eclipse.mylyn.tasks.core.AbstractRepositoryTask;
import org.eclipse.mylyn.tasks.core.AbstractTaskContainer;
import org.eclipse.mylyn.tasks.core.DateRangeContainer;
import org.eclipse.mylyn.tasks.core.ITask;
import org.eclipse.mylyn.tasks.core.ITaskListElement;
import org.eclipse.mylyn.tasks.core.TaskArchive;
import org.eclipse.mylyn.tasks.core.UncategorizedCategory;
import org.eclipse.ui.PlatformUI;
/**
* @author Mik Kersten
*/
public class TaskListTableSorter extends ViewerSorter {
public enum SortByIndex {
PRIORITY, SUMMARY, DATE_CREATED;
}
private final TaskListView view;
private TaskKeyComparator taskKeyComparator = new TaskKeyComparator();
private SortByIndex sortByIndex;
public TaskListTableSorter(TaskListView view, SortByIndex sortByIndex) {
super();
this.view = view;
this.sortByIndex = sortByIndex;
}
public void setColumn(String column) {
if (view.isFocusedMode()) {
MessageDialog
.openInformation(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(),
ITasksUiConstants.TITLE_DIALOG,
"Manual sorting is disabled in focused mode, sort order will not take effect until focused mode is disabled.");
}
}
/**
* compare - invoked when column is selected calls the actual comparison
* method for particular criteria
*/
@Override
public int compare(Viewer compareViewer, Object o1, Object o2) {
if (o1 instanceof DateRangeContainer) {
if (o2 instanceof DateRangeContainer) {
DateRangeContainer dateRangeTaskContainer1 = (DateRangeContainer) o1;
DateRangeContainer dateRangeTaskContainer2 = (DateRangeContainer) o2;
return -1 * dateRangeTaskContainer2.getStart().compareTo(dateRangeTaskContainer1.getStart());
} else if (o2 instanceof ITask) {
return 1;
} else {
return -1;
}
}
if (o1 instanceof UncategorizedCategory && o2 instanceof AbstractTaskContainer) {
return -1;
} else if (o1 instanceof AbstractTaskContainer && o2 instanceof UncategorizedCategory) {
return 1;
}
if (o1 instanceof AbstractTaskContainer && o2 instanceof TaskArchive) {
return -1;
} else if (o2 instanceof AbstractTaskContainer && o1 instanceof TaskArchive) {
return 1;
}
if (!(o1 instanceof ITask) && o2 instanceof ITask) {
return 1;
}
if (o1 instanceof ITask && !(o2 instanceof AbstractTaskContainer)) {
return -1;
}
// if (o1 instanceof AbstractTaskContainer || o1 instanceof
// AbstractRepositoryQuery) {
if (!(o1 instanceof ITask)) {
if (o2 instanceof AbstractTaskContainer || o2 instanceof AbstractRepositoryQuery) {
return this.view.sortDirection
* ((ITaskListElement) o1).getSummary()
.compareToIgnoreCase(((ITaskListElement) o2).getSummary());
} else {
return -1;
}
} else if (o1 instanceof ITaskListElement) {
if (!(o2 instanceof ITask)) {
return -1;
} else if (o2 instanceof ITaskListElement) {
ITaskListElement element1 = (ITaskListElement) o1;
ITaskListElement element2 = (ITaskListElement) o2;
return compareElements(element1, element2);
}
} else {
return 0;
}
return 0;
}
private int compareElements(ITaskListElement element1, ITaskListElement element2) {
if (SortByIndex.PRIORITY.equals(sortByIndex)) {
int result = this.view.sortDirection * element1.getPriority().compareTo(element2.getPriority());
if (result != 0) {
return result;
}
} else if (SortByIndex.DATE_CREATED.equals(sortByIndex)) {
ITask t1 = null;
ITask t2 = null;
if (element1 instanceof ITask) {
t1 = (ITask) element1;
}
if (element2 instanceof ITask) {
t2 = (ITask) element2;
}
if (t1 != null && t2 != null) {
if (t1.getCreationDate() != null) {
return t1.getCreationDate().compareTo(t2.getCreationDate());
}
}
} else {
String summary1 = getSortableSummaryFromElement(element1);
String summary2 = getSortableSummaryFromElement(element2);
element2.getSummary();
return this.view.sortDirection * taskKeyComparator.compare(summary1, summary2);
}
return 0;
}
public static String getSortableSummaryFromElement(ITaskListElement element) {
String summary = element.getSummary();
if (element instanceof AbstractRepositoryTask) {
AbstractRepositoryTask task1 = (AbstractRepositoryTask) element;
if (task1.getTaskKey() != null) {
summary = task1.getTaskKey() + ": " + summary;
}
}
return summary;
}
}
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