/*******************************************************************************
* Copyright (c) 2006-2012
* Software Technology Group, Dresden University of Technology
* DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
*
* 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:
* Software Technology Group - TU Dresden, Germany;
* DevBoost GmbH - Berlin, Germany
* - initial API and implementation
******************************************************************************/
package org.reuseware.coconut.compositionprogram.diagram.actions;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IEditorDescriptor;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorRegistry;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.FileEditorInput;
import org.reuseware.coconut.compositionprogram.CompositionProgram;
import org.reuseware.coconut.compositionprogram.FragmentInstance;
import org.reuseware.coconut.compositionprogram.diagram.edit.parts.FragmentInstanceNameEditPart;
/**
* Base class for actions performed on fragment instances.
*/
public abstract class FragmentInstanceAction implements IObjectActionDelegate {
protected Shell shell;
protected FragmentInstance selectedFragmentInstance;
/**
* @param action
* the action proxy that handles presentation portion of the
* action; must not be <code>null</code>.
* @param targetPart
* the new part target; must not be <code>null</code>.
*
* @see IObjectActionDelegate#setActivePart(IAction, IWorkbenchPart)
*/
public void setActivePart(IAction action, IWorkbenchPart targetPart) {
shell = targetPart.getSite().getShell();
}
/**
* @param action the action proxy that handles presentation portion of
* the action
* @param selection the current selection, or <code>null</code> if there
* is no selection.
*
* @see IActionDelegate#selectionChanged(IAction, ISelection)
*/
public void selectionChanged(IAction action, ISelection selection) {
selectedFragmentInstance = null;
EditPart selected = (EditPart) ((StructuredSelection) selection).getFirstElement();
if (selected instanceof FragmentInstanceNameEditPart) {
selected = ((FragmentInstanceNameEditPart) selected).getParent();
}
if (selected == null) {
return;
}
EObject element = ((View) selected.getModel()).getElement();
if (element instanceof FragmentInstance) {
selectedFragmentInstance = (FragmentInstance) element;
} else if (element instanceof CompositionProgram) {
//default behavior: select the first 'target' fragment
CompositionProgram compositionProgram = (CompositionProgram) element;
for (FragmentInstance candidate : compositionProgram.getFragmentInstances()) {
if (candidate.isTarget()) {
selectedFragmentInstance = candidate;
break;
}
}
}
if (!"".equals(getText())) {
action.setText(getText());
}
if (selectedFragmentInstance == null) {
action.setEnabled(false);
} else {
action.setEnabled(isEnabled());
}
}
protected String getText() {
return "";
}
protected boolean isEnabled() {
return true;
}
protected IEditorPart openEditor(IFile file) {
if (file != null && file.exists()) {
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
IEditorRegistry editorRegistry = PlatformUI.getWorkbench().getEditorRegistry();
IEditorDescriptor editorDescriptor = null;
String fileName = file.getName();
IContentType[] contentTypes = Platform.getContentTypeManager().findContentTypesFor(fileName);
if (contentTypes.length == 0) {
editorDescriptor = editorRegistry.getDefaultEditor(fileName, null);
}
for (int i = 0; editorDescriptor == null && i < contentTypes.length; i++) {
editorDescriptor = editorRegistry.getDefaultEditor(fileName, contentTypes[i]);
}
if (editorDescriptor == null) {
//try default model tree editor
editorDescriptor = editorRegistry.getDefaultEditor(".xmi");
}
if (editorDescriptor != null) {
try {
final IEditorPart editor = page.openEditor(
new FileEditorInput(file),
editorDescriptor.getId());
return editor;
} catch (PartInitException e) {
e.printStackTrace();
}
} else {
MessageDialog.openError(page.getActivePart().getSite().getShell(),
"Open editor error",
"No editor found for '"
+ file.getName()
+ "'.");
}
}
return null;
}
}