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/*******************************************************************************
* Copyright (c) 2004, 2010 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.editors;
import org.eclipse.jface.action.ICoolBarManager;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IStatusLineManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.mylyn.commons.ui.SelectionProviderAdapter;
import org.eclipse.mylyn.commons.workbench.WorkbenchActionSupport;
import org.eclipse.mylyn.commons.workbench.WorkbenchActionSupport.WorkbenchActionCallback;
import org.eclipse.mylyn.internal.tasks.ui.actions.TaskEditorActionGroup;
import org.eclipse.mylyn.tasks.ui.editors.AbstractTaskEditorPage;
import org.eclipse.mylyn.tasks.ui.editors.TaskEditor;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.forms.editor.IFormPage;
import org.eclipse.ui.part.MultiPageEditorActionBarContributor;
/**
* @author Mik Kersten
* @author Rob Elves
* @author Steffen Pingel
*/
public class TaskEditorActionContributor extends MultiPageEditorActionBarContributor implements
ISelectionChangedListener {
private final class SelectionProviderAdapterExtension extends SelectionProviderAdapter implements
ISelectionChangedListener {
@Override
public ISelection getSelection() {
if (editor != null && editor.getSite().getSelectionProvider() != null) {
return editor.getSite().getSelectionProvider().getSelection();
} else {
return StructuredSelection.EMPTY;
}
}
@Override
public void selectionChanged(SelectionChangedEvent event) {
super.selectionChanged(event);
}
}
private class EditorPageCallback extends WorkbenchActionCallback {
@Override
public boolean canPerformAction(String actionId, Control control) {
IFormPage activePage = getActivePage();
if (activePage instanceof AbstractTaskEditorPage) {
AbstractTaskEditorPage page = (AbstractTaskEditorPage) activePage;
return page.canPerformAction(actionId);
} else if (activePage != null) {
WorkbenchActionCallback callback = (WorkbenchActionCallback) activePage.getAdapter(WorkbenchActionCallback.class);
if (callback != null) {
return callback.canPerformAction(actionId, control);
}
}
return super.canPerformAction(actionId, control);
}
@Override
public void doAction(String actionId, Control control) {
IFormPage activePage = getActivePage();
if (activePage instanceof AbstractTaskEditorPage) {
AbstractTaskEditorPage page = (AbstractTaskEditorPage) activePage;
page.doAction(actionId);
return;
} else if (activePage != null) {
WorkbenchActionCallback callback = (WorkbenchActionCallback) activePage.getAdapter(WorkbenchActionCallback.class);
if (callback != null) {
callback.doAction(actionId, control);
return;
}
}
super.doAction(actionId, control);
}
@Override
public Control getFocusControl() {
IFormPage page = getActivePage();
return (page != null) ? EditorUtil.getFocusControl(page) : null;
}
@Override
public ISelection getSelection() {
return selectionProvider.getSelection();
}
}
private TaskEditor editor;
private final WorkbenchActionSupport actionSupport;
private final SelectionProviderAdapterExtension selectionProvider;
private final TaskEditorActionGroup actionGroup;
public TaskEditorActionContributor() {
this.actionSupport = new WorkbenchActionSupport();
this.actionSupport.setCallback(new EditorPageCallback());
this.selectionProvider = new SelectionProviderAdapterExtension();
this.actionGroup = new TaskEditorActionGroup(actionSupport);
}
public void contextMenuAboutToShow(IMenuManager mng) {
IFormPage page = getActivePage();
boolean addClipboard = (page instanceof TaskPlanningEditor || page instanceof AbstractTaskEditorPage);
contextMenuAboutToShow(mng, addClipboard);
}
public void contextMenuAboutToShow(IMenuManager manager, boolean addClipboard) {
actionGroup.fillContextMenu(manager, editor, addClipboard);
}
@Override
public void contributeToCoolBar(ICoolBarManager cbm) {
}
@Override
public void contributeToMenu(IMenuManager mm) {
}
@Override
public void contributeToStatusLine(IStatusLineManager slm) {
}
@Override
public void contributeToToolBar(IToolBarManager tbm) {
}
@Override
public void dispose() {
actionGroup.setSelectionProvider(null);
}
public void forceActionsEnabled() {
actionSupport.forceEditActionsEnabled();
}
private IFormPage getActivePage() {
return (editor != null) ? editor.getActivePageInstance() : null;
}
public TaskEditor getEditor() {
return editor;
}
@Override
public void init(IActionBars bars, IWorkbenchPage page) {
super.init(bars, page);
actionSupport.install(bars);
bars.setGlobalActionHandler(ActionFactory.REFRESH.getId(), actionGroup.getSynchronizeEditorAction());
}
public void selectionChanged(SelectionChangedEvent event) {
actionSupport.selectionChanged(event);
actionGroup.getNewTaskFromSelectionAction().selectionChanged(event.getSelection());
}
@Override
public void setActiveEditor(IEditorPart activeEditor) {
if (this.editor != null) {
this.editor.getSite().getSelectionProvider().removeSelectionChangedListener(selectionProvider);
}
if (activeEditor instanceof TaskEditor) {
this.editor = (TaskEditor) activeEditor;
this.editor.getSite().getSelectionProvider().addSelectionChangedListener(selectionProvider);
actionGroup.getSynchronizeEditorAction().selectionChanged(new StructuredSelection(this.editor));
updateSelectableActions(selectionProvider.getSelection());
} else {
actionGroup.getSynchronizeEditorAction().selectionChanged(StructuredSelection.EMPTY);
this.editor = null;
}
}
@Override
public void setActivePage(IEditorPart activePage) {
updateSelectableActions(selectionProvider.getSelection());
}
public void updateSelectableActions(ISelection selection) {
if (editor != null) {
actionSupport.updateActions(selection);
actionGroup.getNewTaskFromSelectionAction().selectionChanged(selection);
}
}
}
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