| /******************************************************************************* |
| * Copyright (c) 2000, 2007 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.internal.filebuffers; |
| |
| import org.eclipse.core.filesystem.IFileInfo; |
| import org.eclipse.core.filesystem.IFileStore; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| |
| import org.eclipse.core.filebuffers.IFileBuffer; |
| import org.eclipse.core.filebuffers.IStateValidationSupport; |
| |
| import org.eclipse.jface.text.IDocumentExtension4; |
| |
| /** |
| * @since 3.0 |
| */ |
| public abstract class AbstractFileBuffer implements IFileBuffer, IStateValidationSupport { |
| |
| /** |
| * The element for which the info is stored. |
| * @since 3.3 |
| */ |
| protected IFileStore fFileStore; |
| /** |
| * The text file buffer manager. |
| * @since 3.4 (pulled up from subclasses) |
| */ |
| final protected TextFileBufferManager fManager; |
| |
| |
| public AbstractFileBuffer(TextFileBufferManager manager) { |
| fManager= manager; |
| } |
| |
| public abstract void create(IPath location, IProgressMonitor monitor) throws CoreException; |
| |
| public abstract void connect(); |
| |
| public abstract void disconnect() throws CoreException; |
| |
| /** |
| * Returns whether this file buffer has been disconnected. |
| * |
| * @return <code>true</code> if already disposed, <code>false</code> otherwise |
| * @since 3.1 |
| */ |
| protected abstract boolean isDisconnected(); |
| |
| /** |
| * Disposes this file buffer. |
| * This implementation is always empty. |
| * <p> |
| * Subclasses may extend but must call <code>super.dispose()</code>. |
| * <p> |
| * |
| * @since 3.1 |
| */ |
| protected void dispose() { |
| // do nothing |
| } |
| |
| @Override |
| public void validationStateAboutToBeChanged() { |
| fManager.fireStateChanging(this); |
| } |
| |
| @Override |
| public void validationStateChangeFailed() { |
| fManager.fireStateChangeFailed(this); |
| } |
| |
| @Override |
| public long getModificationStamp() { |
| IFileInfo info= fFileStore.fetchInfo(); |
| return info.exists() ? info.getLastModified() : IDocumentExtension4.UNKNOWN_MODIFICATION_STAMP; |
| } |
| |
| @Override |
| public IFileStore getFileStore() { |
| return fFileStore; |
| } |
| |
| } |