Java tutorial
/******************************************************************************* * Copyright (c) 2012 BestSolution.at 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: * Tom Schindl<tom.schindl@bestsolution.at> - initial API and implementation *******************************************************************************/ package at.bestsolution.efxclipse.tooling.ui.preview; import java.net.MalformedURLException; import java.net.URL; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IFolder; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IPath; import org.eclipse.jdt.core.IClasspathContainer; import org.eclipse.jdt.core.IClasspathEntry; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.ui.IPartListener; import org.eclipse.ui.IPropertyListener; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.IWorkbenchPartConstants; import org.eclipse.ui.part.EditorPart; import at.bestsolution.efxclipse.tooling.ui.editor.IFXMLProviderAdapter; import at.bestsolution.efxclipse.tooling.ui.editor.IFXPreviewAdapter; import at.bestsolution.efxclipse.tooling.ui.preview.LivePreviewPart.ContentData; import com.google.inject.Inject; public class LivePreviewSynchronizer implements IPartListener, IPropertyListener { @Inject private LivePreviewPart view; private IFXPreviewAdapter currentEditor; private IFXMLProviderAdapter currentContentProvider; public void partActivated(IWorkbenchPart part) { updateView(part); } private void updateView(IWorkbenchPart part) { IFXPreviewAdapter adapted; if (part instanceof IFXPreviewAdapter) { adapted = (IFXPreviewAdapter) part; } else { adapted = (IFXPreviewAdapter) part.getAdapter(IFXPreviewAdapter.class); } if (adapted != null) { if (currentEditor == null || !currentEditor.getEditorPart().equals(adapted.getEditorPart())) { if (currentEditor != null) { currentEditor.getEditorPart().removePropertyListener(this); } currentEditor = (IFXPreviewAdapter) adapted; if (currentEditor != null) { currentEditor.getEditorPart().addPropertyListener(this); } if (currentEditor instanceof IFXMLProviderAdapter && (currentContentProvider == null || !currentContentProvider.getEditorPart().equals(currentEditor.getEditorPart()))) { currentContentProvider = (IFXMLProviderAdapter) currentEditor; view.setContents(createContentData(currentContentProvider)); } } } else if (part instanceof EditorPart) { if (currentEditor != null) { currentEditor.getEditorPart().removePropertyListener(this); } currentContentProvider = null; currentEditor = null; view.setContents(null); } } @Override public void propertyChanged(Object source, int propId) { if (propId == IWorkbenchPartConstants.PROP_DIRTY) { if (currentEditor != null && !currentEditor.getEditorPart().isDirty() && currentContentProvider != null) { view.setContents(createContentData(currentContentProvider)); } } } public void refreshPreview() { if (currentContentProvider != null) { view.setContents(createContentData(currentContentProvider)); } } private ContentData createContentData(IFXMLProviderAdapter contentProvider) { String contents = contentProvider.getPreviewFXML(); String previewSceneSetup = contentProvider.getPreviewSceneFXML(); List<String> cssFiles = contentProvider.getPreviewCSSFiles(); String resourceBundle = contentProvider.getPreviewResourceBundle(); List<URL> previewUrls = contentProvider.getPreviewClasspath(); IFile file = contentProvider.getFile(); List<URL> extraJarPath = new ArrayList<URL>(); extraJarPath.addAll(previewUrls); if (file != null) { extraJarPath.addAll(calculateProjectClasspath(JavaCore.create(file.getProject()))); } return new ContentData(contents, previewSceneSetup, cssFiles, resourceBundle, extraJarPath, file); } private void resolveDataProject(IJavaProject project, Set<IPath> outputPath, Set<IPath> listRefLibraries) { try { IClasspathEntry[] entries = project.getRawClasspath(); outputPath.add(project.getOutputLocation()); for (IClasspathEntry e : entries) { if (e.getEntryKind() == IClasspathEntry.CPE_PROJECT) { IProject p = ResourcesPlugin.getWorkspace().getRoot().getProject(e.getPath().lastSegment()); if (p.exists()) { resolveDataProject(JavaCore.create(p), outputPath, listRefLibraries); } } else if (e.getEntryKind() == IClasspathEntry.CPE_LIBRARY) { listRefLibraries.add(e.getPath()); } else if ("org.eclipse.pde.core.requiredPlugins".equals(e.getPath().toString())) { IClasspathContainer cpContainer = JavaCore.getClasspathContainer(e.getPath(), project); for (IClasspathEntry cpEntry : cpContainer.getClasspathEntries()) { if (cpEntry.getEntryKind() == IClasspathEntry.CPE_PROJECT) { IProject p = ResourcesPlugin.getWorkspace().getRoot() .getProject(cpEntry.getPath().lastSegment()); if (p.exists()) { resolveDataProject(JavaCore.create(p), outputPath, listRefLibraries); } } else if (cpEntry.getEntryKind() == IClasspathEntry.CPE_LIBRARY) { listRefLibraries.add(cpEntry.getPath()); } } } } } catch (JavaModelException e) { // TODO Auto-generated catch block e.printStackTrace(); } } private List<URL> calculateProjectClasspath(IJavaProject jp) { HashSet<IPath> outputPath = new HashSet<IPath>(); HashSet<IPath> libraries = new HashSet<IPath>(); resolveDataProject(jp, outputPath, libraries); IWorkspaceRoot root = jp.getProject().getWorkspace().getRoot(); List<URL> rv = new ArrayList<URL>(); for (IPath out : outputPath) { IFolder f = root.getFolder(out); if (f.exists()) { try { rv.add(f.getLocation().toFile().toURI().toURL()); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } for (IPath lib : libraries) { IFile f = root.getFile(lib); if (f.exists()) { try { rv.add(f.getLocation().toFile().toURI().toURL()); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } return rv; } @Override public void partBroughtToTop(IWorkbenchPart part) { } @Override public void partClosed(IWorkbenchPart part) { } @Override public void partDeactivated(IWorkbenchPart part) { } @Override public void partOpened(IWorkbenchPart part) { } }