| /******************************************************************************* |
| * Copyright (c) 2016 Red Hat, Inc. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Red Hat Inc. - initial API and implementation and/or initial documentation |
| *******************************************************************************/ |
| package org.eclipse.wst.jsdt.js.grunt.internal.ui; |
| |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IResourceChangeEvent; |
| import org.eclipse.core.resources.IResourceChangeListener; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.wst.jsdt.core.JavaScriptModelException; |
| import org.eclipse.wst.jsdt.core.dom.JavaScriptUnit; |
| import org.eclipse.wst.jsdt.js.common.build.system.ITask; |
| import org.eclipse.wst.jsdt.js.common.build.system.util.ASTUtil; |
| import org.eclipse.wst.jsdt.js.grunt.GruntPlugin; |
| import org.eclipse.wst.jsdt.js.grunt.util.GruntVisitor; |
| |
| /** |
| * @author "Ilya Buziuk (ibuziuk)" |
| */ |
| public class GruntFileContentProvider implements ITreeContentProvider, IResourceChangeListener { |
| |
| private Viewer viewer; |
| |
| private IResource resource; |
| |
| protected static final Object[] EMPTY_ARRAY = new Object[0]; |
| |
| @Override |
| public void dispose() { |
| if (resource != null) { |
| resource.getWorkspace().removeResourceChangeListener(this); |
| resource = null; |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface |
| * .viewers.Viewer, java.lang.Object, java.lang.Object) |
| */ |
| @Override |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| if (resource != null) { |
| resource.getWorkspace().removeResourceChangeListener(this); |
| } |
| |
| resource = (IResource) newInput; |
| |
| if (resource != null) { |
| resource.getWorkspace().addResourceChangeListener(this, IResourceChangeEvent.POST_CHANGE); |
| } |
| |
| this.viewer = viewer; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(Object) |
| */ |
| @Override |
| public Object[] getChildren(Object parentNode) { |
| Set<ITask> tasks = null; |
| if (parentNode instanceof IFile) { |
| try { |
| IFile buildFile = (IFile) parentNode; |
| JavaScriptUnit unit = ASTUtil.getJavaScriptUnit(buildFile); |
| GruntVisitor visitor = new GruntVisitor(buildFile); |
| unit.accept(visitor); |
| tasks = visitor.getTasks(); |
| |
| } catch (JavaScriptModelException e) { |
| GruntPlugin.logError(e, e.getMessage()); |
| } |
| return tasks.toArray(); |
| } |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(Object) |
| */ |
| @Override |
| public Object getParent(Object element) { |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(Object) |
| */ |
| @Override |
| public boolean hasChildren(Object element) { |
| return element instanceof IFile; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.jface.viewers.IStructuredContentProvider#getElements(Object) |
| */ |
| @Override |
| public Object[] getElements(Object inputElement) { |
| if (inputElement instanceof List) { |
| return ((List<?>) inputElement).toArray(); |
| } |
| if (inputElement instanceof Object[]) { |
| return (Object[]) inputElement; |
| } |
| return EMPTY_ARRAY; |
| } |
| |
| @Override |
| public void resourceChanged(IResourceChangeEvent arg0) { |
| Display.getDefault().asyncExec(new Runnable() { |
| @Override |
| public void run() { |
| viewer.refresh(); |
| } |
| }); |
| } |
| } |