| /******************************************************************************* |
| * Copyright (c) 2000, 2007 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 |
| * |
| |
| *******************************************************************************/ |
| package org.eclipse.dltk.core; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.dltk.internal.core.BufferManager; |
| import org.eclipse.dltk.internal.core.DefaultWorkingCopyOwner; |
| import org.eclipse.dltk.internal.core.ExternalDLTKProject; |
| import org.eclipse.dltk.internal.core.ScriptFolder; |
| import org.eclipse.dltk.internal.core.SourceModule; |
| |
| |
| /** |
| * The owner of an <code>ISourceModule</code> handle in working copy mode. |
| * An owner is used to identify a working copy and to create its buffer. |
| * <p> |
| * Clients should subclass this class to instantiate a working copy owner that is specific to their need and that |
| * they can pass in to various APIs (e.g. <code>IType.resolveType(String, WorkingCopyOwner)</code>. |
| * Clients can also override the default implementation of <code>createBuffer(ISourceModule)</code>. |
| * </p><p> |
| * Note: even though this class has no abstract method, which means that it provides functional default behavior, |
| * it is still an abstract class, as clients are intended to own their owner implementation. |
| * </p> |
| * @see ISourceModule#becomeWorkingCopy(IProblemRequestor, org.eclipse.core.runtime.IProgressMonitor) |
| * @see ISourceModule#discardWorkingCopy() |
| * @see ISourceModule#getWorkingCopy(org.eclipse.core.runtime.IProgressMonitor) |
| * |
| */ |
| public abstract class WorkingCopyOwner { |
| |
| /** |
| * Sets the buffer provider of the primary working copy owner. Note that even if the |
| * buffer provider is a working copy owner, only its <code>createBuffer(ISourceModule)</code> |
| * method is used by the primary working copy owner. It doesn't replace the internal primary |
| * working owner. |
| * <p> |
| * This method is for internal use by the dltk-related plug-ins. |
| * Clients outside of the dltk should not reference this method. |
| * </p> |
| * |
| * @param primaryBufferProvider the primary buffer provider |
| */ |
| public static void setPrimaryBufferProvider(WorkingCopyOwner primaryBufferProvider) { |
| DefaultWorkingCopyOwner.PRIMARY.primaryBufferProvider = primaryBufferProvider; |
| } |
| |
| /** |
| * Creates a buffer for the given working copy. |
| * The new buffer will be initialized with the contents of the underlying file |
| * if and only if it was not already initialized by the compilation owner (a buffer is |
| * uninitialized if its content is <code>null</code>). |
| * <p> |
| * Note: This buffer will be associated to the working copy for its entire life-cycle. Another |
| * working copy on same unit but owned by a different owner would not share the same buffer |
| * unless its owner decided to implement such a sharing behaviour. |
| * </p> |
| * |
| * @param workingCopy the working copy of the buffer |
| * @return IBuffer the created buffer for the given working copy |
| * @see IBuffer |
| */ |
| public IBuffer createBuffer(ISourceModule workingCopy) { |
| |
| return BufferManager.getDefaultBufferManager().createBuffer(workingCopy); |
| } |
| /** |
| * Returns a new working copy with the given name using this working copy owner to |
| * create its buffer. |
| * <p> |
| * This working copy always belongs to the default package in a package |
| * fragment root that corresponds to its DLTK project, and this DLTK project never exists. |
| * However this DLTK project has the given buildpath that is used when resolving names |
| * in this working copy. |
| * </p><p> |
| * A DOM AST created using this working copy will have bindings resolved using the given |
| * buildpath, and problem are reported to the given problem requestor. |
| * <p></p> |
| * <code>DLTKCore#getOptions()</code> is used to create the DOM AST as it is not |
| * possible to set the options on the non-existing DLTK project. |
| * </p><p> |
| * When the working copy instance is created, an {@link IModelElementDelta#ADDED added delta} is |
| * reported on this working copy. |
| * </p><p> |
| * Once done with the working copy, users of this method must discard it using |
| * {@link ISourceModule#discardWorkingCopy()}. |
| * </p><p> |
| * Note that when such working copy is committed, only its buffer is saved (see |
| * {@link IBuffer#save(IProgressMonitor, boolean)}) but no resource is created. |
| * </p><p> |
| * This method is not intended to be overriden by clients. |
| * </p> |
| * |
| * @param name the name of the working copy (e.g. "X.java") |
| * @param buildpath the buildpath used to resolve names in this working copy |
| * @param problemRequestor a requestor which will get notified of problems detected during |
| * reconciling as they are discovered. The requestor can be set to <code>null</code> indicating |
| * that the client is not interested in problems. |
| * @param monitor a progress monitor used to report progress while opening the working copy |
| * or <code>null</code> if no progress should be reported |
| * @throws ModelException if the contents of this working copy can |
| * not be determined. |
| * @return a new working copy |
| * @see ISourceModule#becomeWorkingCopy(IProblemRequestor, IProgressMonitor) |
| * |
| */ |
| public final ISourceModule newWorkingCopy(String name, IBuildpathEntry[] buildpath, IProblemRequestor problemRequestor, IProgressMonitor monitor) throws ModelException { |
| ExternalDLTKProject project = new ExternalDLTKProject(buildpath); |
| IProjectFragment fragment = project.getProjectFragment(Path.EMPTY); |
| IScriptFolder parent = fragment.getScriptFolder(IProjectFragment.DEFAULT_SCRIPT_FOLDER_NAME); |
| SourceModule result = new SourceModule((ScriptFolder) parent, name, this); |
| result.becomeWorkingCopy(problemRequestor, monitor); |
| return result; |
| } |
| |
| } |