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/*******************************************************************************
* Copyright (c) 2004, 2009 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui.actions;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.mylyn.commons.workbench.AdaptiveRefreshPolicy.IFilteredTreeListener;
import org.eclipse.mylyn.internal.tasks.ui.AbstractTaskListFilter;
import org.eclipse.mylyn.internal.tasks.ui.ITasksUiPreferenceConstants;
import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin;
import org.eclipse.mylyn.internal.tasks.ui.util.TasksUiInternal;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskListInterestFilter;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskListInterestSorter;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskListView;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskScheduleContentProvider;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.ui.IActionDelegate2;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
/**
* @author Mik Kersten
* @author Steffen Pingel
*/
public class FocusTaskListAction implements IFilteredTreeListener, IViewActionDelegate, IActionDelegate2 {
private Set<AbstractTaskListFilter> previousFilters = new HashSet<AbstractTaskListFilter>();
private ViewerSorter previousSorter;
private final TaskListInterestFilter taskListInterestFilter = new TaskListInterestFilter();
private final TaskListInterestSorter taskListInterestSorter = new TaskListInterestSorter();
private TaskListView taskListView;
private IAction action;
public FocusTaskListAction() {
}
public void filterTextChanged(final String text) {
if (taskListView.isFocusedMode() && (text == null || "".equals(text.trim()))) { //$NON-NLS-1$
taskListView.getViewer().expandAll();
}
}
public void init(IAction action) {
this.action = action;
initAction();
}
public void init(IViewPart view) {
if (view instanceof TaskListView) {
taskListView = (TaskListView) view;
taskListView.getFilteredTree().getRefreshPolicy().addListener(this);
taskListView.getFilteredTree().addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
taskListView.getFilteredTree().getRefreshPolicy().removeListener(FocusTaskListAction.this);
}
});
if (TasksUiPlugin.getDefault()
.getPreferenceStore()
.getBoolean(ITasksUiPreferenceConstants.TASK_LIST_FOCUSED)) {
installInterestFilter();
}
initAction();
showProgressBar(taskListView.isFocusedMode());
}
}
private void initAction() {
if (action != null && taskListView != null) {
action.setChecked(taskListView.isFocusedMode());
}
}
public void selectionChanged(IAction action, ISelection selection) {
// ignore
}
private void showProgressBar(boolean visible) {
taskListView.getFilteredTree().setShowProgress(visible);
}
protected void installInterestFilter() {
TasksUiInternal.preservingSelection(taskListView.getViewer(), new Runnable() {
public void run() {
try {
taskListView.getFilteredTree().setRedraw(false);
taskListView.setFocusedMode(true);
previousSorter = taskListView.getViewer().getSorter();
previousFilters = taskListView.clearFilters();
if (!taskListView.getFilters().contains(taskListInterestFilter)) {
taskListView.addFilter(taskListInterestFilter);
}
// Setting sorter causes root refresh
taskListView.getViewer().setSorter(taskListInterestSorter);
taskListView.getViewer().expandAll();
// taskListView.selectedAndFocusTask(TasksUiPlugin.getTaskList().getActiveTask());
showProgressBar(true);
} finally {
taskListView.getFilteredTree().setRedraw(true);
}
}
});
}
protected void uninstallInterestFilter() {
TasksUiInternal.preservingSelection(taskListView.getViewer(), new Runnable() {
public void run() {
try {
taskListView.getViewer().getControl().setRedraw(false);
taskListView.setFocusedMode(false);
for (AbstractTaskListFilter filter : previousFilters) {
taskListView.addFilter(filter);
}
taskListView.removeFilter(taskListInterestFilter);
Text textControl = taskListView.getFilteredTree().getFilterControl();
if (textControl != null && textControl.getText().length() > 0) {
taskListView.getViewer().expandAll();
} else {
taskListView.getViewer().collapseAll();
// expand first element (Today) in scheduled mode
if (taskListView.getViewer().getContentProvider() instanceof TaskScheduleContentProvider
&& taskListView.getViewer().getTree().getItemCount() > 0) {
TreeItem item = taskListView.getViewer().getTree().getItem(0);
if (item.getData() != null) {
taskListView.getViewer().expandToLevel(item.getData(), 1);
}
}
}
taskListView.getViewer().setSorter(previousSorter);
showProgressBar(false);
} finally {
taskListView.getViewer().getControl().setRedraw(true);
}
}
});
}
public void run() {
if (taskListView == null) {
return;
}
if (!taskListView.isFocusedMode()) {
TasksUiPlugin.getDefault()
.getPreferenceStore()
.setValue(ITasksUiPreferenceConstants.TASK_LIST_FOCUSED, true);
installInterestFilter();
} else {
TasksUiPlugin.getDefault()
.getPreferenceStore()
.setValue(ITasksUiPreferenceConstants.TASK_LIST_FOCUSED, false);
uninstallInterestFilter();
}
}
public void run(IAction action) {
run();
}
public void runWithEvent(IAction action, Event event) {
run();
}
public void dispose() {
// ignore
}
}
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