| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.jdt.internal.ui.examples.jspeditor; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.resources.IContainer; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IMarker; |
| |
| import org.eclipse.jface.text.Assert; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.Position; |
| import org.eclipse.jface.text.reconciler.AbstractReconcileStep; |
| import org.eclipse.jface.text.reconciler.DirtyRegion; |
| import org.eclipse.jface.text.reconciler.IReconcilableModel; |
| import org.eclipse.jface.text.reconciler.IReconcileResult; |
| import org.eclipse.jface.text.reconciler.IReconcileStep; |
| import org.eclipse.jface.text.source.Annotation; |
| |
| import org.eclipse.ui.editors.text.EditorsUI; |
| |
| import org.eclipse.ui.texteditor.AnnotationTypeLookup; |
| |
| import org.eclipse.jdt.core.IBuffer; |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.IPackageFragment; |
| import org.eclipse.jdt.core.IPackageFragmentRoot; |
| import org.eclipse.jdt.core.IProblemRequestor; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.core.WorkingCopyOwner; |
| import org.eclipse.jdt.core.compiler.IProblem; |
| |
| import org.eclipse.jdt.internal.core.BufferManager; |
| |
| |
| /** |
| * This reconcile step has a Java source document as |
| * input model and maintains a Java working copy as its model. |
| * <p> |
| * FIXME: We do not destroy the temporary working copy at the end. |
| * There are two ways to fix this: |
| * 1. destroy it after each reconcile call ==> no internal model anylonger |
| * 2. add life-cycle to reconcile steps (at least dispose/destroy) |
| * </p> |
| * @since 3.0 |
| */ |
| public class JavaReconcileStep extends AbstractReconcileStep { |
| |
| private AnnotationTypeLookup fAnnotationTypeLookup= EditorsUI.getAnnotationTypeLookup(); |
| |
| private static class TemporaryWorkingCopyOwner extends WorkingCopyOwner { |
| |
| |
| /* |
| * @see org.eclipse.jdt.core.WorkingCopyOwner#createBuffer(org.eclipse.jdt.core.ICompilationUnit) |
| */ |
| public IBuffer createBuffer(ICompilationUnit workingCopy) { |
| // FIXME: Don't know how to get a buffer without using internal API. |
| return new BufferManager().createBuffer(workingCopy); |
| } |
| } |
| |
| private class ProblemAdapter extends AnnotationAdapter { |
| |
| private IProblem fProblem; |
| private Position fPosition; |
| |
| ProblemAdapter(IProblem problem) { |
| fProblem= problem; |
| } |
| |
| public Position getPosition() { |
| if (fPosition == null) |
| fPosition= createPositionFromProblem(); |
| return fPosition; |
| } |
| |
| public Annotation createAnnotation() { |
| int start= fProblem.getSourceStart(); |
| if (start < 0) |
| return null; |
| |
| int length= fProblem.getSourceEnd() - fProblem.getSourceStart() + 1; |
| if (length < 0) |
| return null; |
| |
| int type= IMarker.SEVERITY_INFO; |
| if (fProblem.isError()) |
| type= IMarker.SEVERITY_ERROR; |
| else if (fProblem.isWarning()) |
| type= IMarker.SEVERITY_WARNING; |
| |
| return new Annotation(fAnnotationTypeLookup.getAnnotationType(IMarker.PROBLEM, type), false, fProblem.getMessage()); |
| } |
| |
| private Position createPositionFromProblem() { |
| int start= fProblem.getSourceStart(); |
| if (start < 0) |
| return null; |
| |
| int length= fProblem.getSourceEnd() - fProblem.getSourceStart() + 1; |
| if (length < 0) |
| return null; |
| |
| return new Position(start, length); |
| } |
| } |
| |
| private class ProblemRequestor implements IProblemRequestor { |
| |
| private List fCollectedProblems; |
| private boolean fIsActive= false; |
| private boolean fIsRunning= false; |
| |
| /* |
| * @see IProblemRequestor#beginReporting() |
| */ |
| public void beginReporting() { |
| fIsRunning= true; |
| fCollectedProblems= new ArrayList(); |
| } |
| |
| /* |
| * @see IProblemRequestor#acceptProblem(IProblem) |
| */ |
| public void acceptProblem(IProblem problem) { |
| if (isActive()) |
| fCollectedProblems.add(problem); |
| } |
| |
| /* |
| * @see IProblemRequestor#endReporting() |
| */ |
| public void endReporting() { |
| fIsRunning= false; |
| |
| // WAS: |
| // if (!isActive()) |
| // return; |
| // |
| // if (isCanceled()) |
| // return; |
| } |
| |
| public IReconcileResult[] getReconcileResult() { |
| Assert.isTrue(!fIsRunning); |
| |
| int size= fCollectedProblems.size(); |
| IReconcileResult[] result= new IReconcileResult[size]; |
| |
| for (int i= 0; i < size; i++) |
| result[i]= new ProblemAdapter((IProblem)fCollectedProblems.get(i)); |
| |
| return result; |
| } |
| |
| /* |
| * @see IProblemRequestor#isActive() |
| */ |
| public boolean isActive() { |
| return fIsActive && fCollectedProblems != null && !isCanceled(); |
| } |
| |
| /** |
| * Sets the active state of this problem requestor. |
| * |
| * @param isActive the state of this problem requestor |
| */ |
| public void setIsActive(boolean isActive) { |
| if (fIsActive != isActive) { |
| fIsActive= isActive; |
| if (fIsActive) |
| startCollectingProblems(); |
| else |
| stopCollectingProblems(); |
| } |
| } |
| |
| /** |
| * Tells this annotation model to collect temporary problems from now on. |
| */ |
| private void startCollectingProblems() { |
| fCollectedProblems= new ArrayList(); |
| } |
| |
| /** |
| * Tells this annotation model to no longer collect temporary problems. |
| */ |
| private void stopCollectingProblems() { |
| // empty implementation |
| } |
| } |
| |
| /** |
| * Adapts an <code>ICompilationUnit</code> to the <code>ITextModel</code> interface. |
| */ |
| class CompilationUnitAdapter implements IReconcilableModel { |
| |
| private ICompilationUnit fCompilationUnit; |
| |
| CompilationUnitAdapter(ICompilationUnit cu) { |
| fCompilationUnit= cu; |
| } |
| |
| private ICompilationUnit getCompilationUnit() { |
| return fCompilationUnit; |
| } |
| } |
| |
| private CompilationUnitAdapter fWorkingCopy; |
| private ProblemRequestor fProblemRequestor; |
| private WorkingCopyOwner fTemporaryWorkingCopyOwner; |
| |
| /** |
| * Creates the last reconcile step of the pipe. |
| */ |
| public JavaReconcileStep(IFile jspFile) { |
| Assert.isNotNull(jspFile); |
| fTemporaryWorkingCopyOwner= new TemporaryWorkingCopyOwner(); |
| try { |
| fWorkingCopy= new CompilationUnitAdapter(createTemporaryWorkingCopy(jspFile)); |
| } catch (JavaModelException e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Creates an intermediate reconcile step which adds |
| * the given step to the pipe. |
| */ |
| public JavaReconcileStep(IReconcileStep step, IFile jspFile) { |
| super(step); |
| Assert.isNotNull(jspFile); |
| fTemporaryWorkingCopyOwner= new TemporaryWorkingCopyOwner(); |
| try { |
| fWorkingCopy= new CompilationUnitAdapter(createTemporaryWorkingCopy(jspFile)); |
| } catch (JavaModelException e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| /* |
| * @see AbstractReconcileStep#reconcileModel(DirtyRegion, IRegion) |
| */ |
| protected IReconcileResult[] reconcileModel(DirtyRegion dirtyRegion, IRegion subRegion) { |
| Assert.isTrue(getInputModel() instanceof DocumentAdapter, "wrong model"); //$NON-NLS-1$ |
| |
| ICompilationUnit cu= fWorkingCopy.getCompilationUnit(); |
| // Cannot reconcile if CU could not be built |
| if (cu == null) |
| return null; |
| |
| System.out.println("reconciling java model..."); //$NON-NLS-1$ |
| |
| IBuffer buffer; |
| try { |
| buffer= cu.getBuffer(); |
| } catch (JavaModelException e) { |
| e.printStackTrace(); |
| buffer= null; |
| } |
| |
| if (buffer != null) |
| buffer.setContents(((DocumentAdapter)getInputModel()).getDocument().get()); |
| |
| try { |
| synchronized (cu) { |
| fProblemRequestor.setIsActive(true); |
| cu.reconcile(true, getProgressMonitor()); |
| } |
| } catch (JavaModelException ex) { |
| ex.printStackTrace(); |
| } finally { |
| fProblemRequestor.setIsActive(false); |
| } |
| |
| return fProblemRequestor.getReconcileResult(); |
| } |
| |
| /* |
| * @see AbstractReconcileStep#getModel() |
| */ |
| public IReconcilableModel getModel() { |
| return fWorkingCopy; |
| } |
| |
| /* |
| * @see org.eclipse.jdt.internal.corext.util.WorkingCopyUtil#getNewWorkingCopy |
| */ |
| private ICompilationUnit createTemporaryWorkingCopy(IFile jspFile) throws JavaModelException { |
| |
| IContainer parent= jspFile.getParent(); |
| IPackageFragment packageFragment= null; |
| IJavaElement je= JavaCore.create(parent); |
| |
| if (je == null || !je.exists()) |
| return null; |
| |
| switch (je.getElementType()) { |
| case IJavaElement.PACKAGE_FRAGMENT: |
| je= je.getParent(); |
| // fall through |
| |
| case IJavaElement.PACKAGE_FRAGMENT_ROOT: |
| IPackageFragmentRoot packageFragmentRoot= (IPackageFragmentRoot)je; |
| packageFragment= packageFragmentRoot.getPackageFragment(IPackageFragmentRoot.DEFAULT_PACKAGEROOT_PATH); |
| break; |
| |
| case IJavaElement.JAVA_PROJECT: |
| IJavaProject jProject= (IJavaProject)je; |
| |
| if (!jProject.exists()) { |
| System.out.println("Abort reconciling: cannot create working copy: JSP is not in a Java project"); //$NON-NLS-1$ |
| return null; |
| } |
| |
| packageFragmentRoot= null; |
| IPackageFragmentRoot[] packageFragmentRoots= jProject.getPackageFragmentRoots(); |
| int i= 0; |
| while (i < packageFragmentRoots.length) { |
| if (!packageFragmentRoots[i].isArchive() && !packageFragmentRoots[i].isExternal()) { |
| packageFragmentRoot= packageFragmentRoots[i]; |
| break; |
| } |
| i++; |
| } |
| if (packageFragmentRoot == null) { |
| System.out.println("Abort reconciling: cannot create working copy: JSP is not in a Java project with source package fragment root"); //$NON-NLS-1$ |
| return null; |
| } |
| packageFragment= packageFragmentRoot.getPackageFragment(IPackageFragmentRoot.DEFAULT_PACKAGEROOT_PATH); |
| break; |
| |
| default : |
| return null; |
| } |
| |
| fProblemRequestor= new ProblemRequestor(); |
| |
| return packageFragment.getCompilationUnit("Demo.java").getWorkingCopy(fTemporaryWorkingCopyOwner, fProblemRequestor, getProgressMonitor()); //$NON-NLS-1$ |
| } |
| } |