+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2003 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-
-package net.sourceforge.phpeclipse.phpeditor;
-
-
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Set;
-
-import net.sourceforge.phpdt.core.BufferChangedEvent;
-import net.sourceforge.phpdt.core.IBuffer;
-import net.sourceforge.phpdt.core.IBufferChangedListener;
-import net.sourceforge.phpdt.core.IOpenable;
-import net.sourceforge.phpdt.core.JavaModelException;
-import net.sourceforge.phpeclipse.PHPeclipsePlugin;
-
-import org.eclipse.core.filebuffers.FileBuffers;
-import org.eclipse.core.filebuffers.ITextFileBuffer;
-import org.eclipse.core.filebuffers.ITextFileBufferManager;
-import org.eclipse.core.resources.IFile;
-import org.eclipse.core.resources.IResource;
-import org.eclipse.core.runtime.CoreException;
-import org.eclipse.core.runtime.IPath;
-import org.eclipse.core.runtime.IProgressMonitor;
-import org.eclipse.core.runtime.IStatus;
-import org.eclipse.core.runtime.NullProgressMonitor;
-import org.eclipse.jface.text.Assert;
-import org.eclipse.jface.text.BadLocationException;
-import org.eclipse.jface.text.DefaultLineTracker;
-import org.eclipse.jface.text.DocumentEvent;
-import org.eclipse.jface.text.IDocument;
-import org.eclipse.jface.text.IDocumentListener;
-import org.eclipse.swt.widgets.Display;
-
-
-
-/**
- * Adapts <code>IDocument</code> to <code>IBuffer</code>. Uses the
- * same algorithm as the text widget to determine the buffer's line delimiter.
- * All text inserted into the buffer is converted to this line delimiter.
- * This class is <code>public</code> for test purposes only.
- */
-public class DocumentAdapter implements IBuffer, IDocumentListener {
-
- /**
- * Internal implementation of a NULL instanceof IBuffer.
- */
- static private class NullBuffer implements IBuffer {
- public void addBufferChangedListener(IBufferChangedListener listener) {}
- public void append(char[] text) {}
- public void append(String text) {}
- public void close() {}
- public char getChar(int position) { return 0; }
- public char[] getCharacters() { return null; }
- public String getContents() { return null; }
- public int getLength() { return 0; }
- public IOpenable getOwner() { return null; }
- public String getText(int offset, int length) { return null; }
- public IResource getUnderlyingResource() { return null; }
- public boolean hasUnsavedChanges() { return false; }
- public boolean isClosed() { return false; }
- public boolean isReadOnly() { return true; }
- public void removeBufferChangedListener(IBufferChangedListener listener) {}
- public void replace(int position, int length, char[] text) {}
- public void replace(int position, int length, String text) {}
- public void save(IProgressMonitor progress, boolean force) throws JavaModelException {}
- public void setContents(char[] contents) {}
- public void setContents(String contents) {}
- }
-
-
- /** NULL implementing <code>IBuffer</code> */
- public final static IBuffer NULL= new NullBuffer();
-
-
- /**
- * Executes a document set content call in the ui thread.
- */
- protected class DocumentSetCommand implements Runnable {
-
- private String fContents;
-
- public void run() {
- fDocument.set(fContents);
- }
-
- public void set(String contents) {
- fContents= contents;
- Display.getDefault().syncExec(this);
- }
- }
-
- /**
- * Executes a document replace call in the ui thread.
- */
- protected class DocumentReplaceCommand implements Runnable {
-
- private int fOffset;
- private int fLength;
- private String fText;
-
- public void run() {
- try {
- fDocument.replace(fOffset, fLength, fText);
- } catch (BadLocationException x) {
- // ignore
- }
- }
-
- public void replace(int offset, int length, String text) {
- fOffset= offset;
- fLength= length;
- fText= text;
- Display.getDefault().syncExec(this);
- }
- }
-
- private static final boolean DEBUG_LINE_DELIMITERS= true;
-
- private IOpenable fOwner;
- private IFile fFile;
- private ITextFileBuffer fTextFileBuffer;
- private IDocument fDocument;
-
- private DocumentSetCommand fSetCmd= new DocumentSetCommand();
- private DocumentReplaceCommand fReplaceCmd= new DocumentReplaceCommand();
-
- private Set fLegalLineDelimiters;
-
- private List fBufferListeners= new ArrayList(3);
- private IStatus fStatus;
-
-
- /**
- * This method is <code>public</code> for test purposes only.
- */
- public DocumentAdapter(IOpenable owner, IFile file) {
-
- fOwner= owner;
- fFile= file;
-
- initialize();
- }
-
- private void initialize() {
- ITextFileBufferManager manager= FileBuffers.getTextFileBufferManager();
- IPath location= fFile.getFullPath();
- try {
- manager.connect(location, new NullProgressMonitor());
- fTextFileBuffer= manager.getTextFileBuffer(location);
- fDocument= fTextFileBuffer.getDocument();
- } catch (CoreException x) {
- fStatus= x.getStatus();
- fDocument= manager.createEmptyDocument(location);
- }
- fDocument.addPrenotifiedDocumentListener(this);
- }
-
- /**
- * Returns the status of this document adapter.
- */
- public IStatus getStatus() {
- if (fStatus != null)
- return fStatus;
- if (fTextFileBuffer != null)
- return fTextFileBuffer.getStatus();
- return null;
- }
-
- /**
- * Returns the adapted document.
- *
- * @return the adapted document
- */
- public IDocument getDocument() {
- return fDocument;
- }
-
- /*
- * @see IBuffer#addBufferChangedListener(IBufferChangedListener)
- */
- public void addBufferChangedListener(IBufferChangedListener listener) {
- Assert.isNotNull(listener);
- if (!fBufferListeners.contains(listener))
- fBufferListeners.add(listener);
- }
-
- /*
- * @see IBuffer#removeBufferChangedListener(IBufferChangedListener)
- */
- public void removeBufferChangedListener(IBufferChangedListener listener) {
- Assert.isNotNull(listener);
- fBufferListeners.remove(listener);
- }
-
- /*
- * @see IBuffer#append(char[])
- */
- public void append(char[] text) {
- append(new String(text));
- }
-
- /*
- * @see IBuffer#append(String)
- */
- public void append(String text) {
- if (DEBUG_LINE_DELIMITERS) {
- validateLineDelimiters(text);
- }
- fReplaceCmd.replace(fDocument.getLength(), 0, text);
- }
-
- /*
- * @see IBuffer#close()
- */
- public void close() {
-
- if (isClosed())
- return;
-
- IDocument d= fDocument;
- fDocument= null;
- d.removePrenotifiedDocumentListener(this);
-
- if (fTextFileBuffer != null) {
- ITextFileBufferManager manager= FileBuffers.getTextFileBufferManager();
- try {
- manager.disconnect(fTextFileBuffer.getLocation(), new NullProgressMonitor());
- } catch (CoreException x) {
- // ignore
- }
- fTextFileBuffer= null;
- }
-
- fireBufferChanged(new BufferChangedEvent(this, 0, 0, null));
- fBufferListeners.clear();
- }
-
- /*
- * @see IBuffer#getChar(int)
- */
- public char getChar(int position) {
- try {
- return fDocument.getChar(position);
- } catch (BadLocationException x) {
- throw new ArrayIndexOutOfBoundsException();
- }
- }
-
- /*
- * @see IBuffer#getCharacters()
- */
- public char[] getCharacters() {
- String content= getContents();
- return content == null ? null : content.toCharArray();
- }
-
- /*
- * @see IBuffer#getContents()
- */
- public String getContents() {
- return fDocument.get();
- }
-
- /*
- * @see IBuffer#getLength()
- */
- public int getLength() {
- return fDocument.getLength();
- }
-
- /*
- * @see IBuffer#getOwner()
- */
- public IOpenable getOwner() {
- return fOwner;
- }
-
- /*
- * @see IBuffer#getText(int, int)
- */
- public String getText(int offset, int length) {
- try {
- return fDocument.get(offset, length);
- } catch (BadLocationException x) {
- throw new ArrayIndexOutOfBoundsException();
- }
- }
-
- /*
- * @see IBuffer#getUnderlyingResource()
- */
- public IResource getUnderlyingResource() {
- return fFile;
- }
-
- /*
- * @see IBuffer#hasUnsavedChanges()
- */
- public boolean hasUnsavedChanges() {
- return fTextFileBuffer != null ? fTextFileBuffer.isDirty() : false;
- }
-
- /*
- * @see IBuffer#isClosed()
- */
- public boolean isClosed() {
- return fDocument == null;
- }
-
- /*
- * @see IBuffer#isReadOnly()
- */
- public boolean isReadOnly() {
- IResource resource= getUnderlyingResource();
- return resource == null ? true : resource.isReadOnly();
- }
-
- /*
- * @see IBuffer#replace(int, int, char[])
- */
- public void replace(int position, int length, char[] text) {
- replace(position, length, new String(text));
- }
-
- /*
- * @see IBuffer#replace(int, int, String)
- */
- public void replace(int position, int length, String text) {
- if (DEBUG_LINE_DELIMITERS) {
- validateLineDelimiters(text);
- }
- fReplaceCmd.replace(position, length, text);
- }
-
- /*
- * @see IBuffer#save(IProgressMonitor, boolean)
- */
- public void save(IProgressMonitor progress, boolean force) throws JavaModelException {
- try {
- if (fTextFileBuffer != null)
- fTextFileBuffer.commit(progress, force);
- } catch (CoreException e) {
- throw new JavaModelException(e);
- }
- }
-
- /*
- * @see IBuffer#setContents(char[])
- */
- public void setContents(char[] contents) {
- setContents(new String(contents));
- }
-
- /*
- * @see IBuffer#setContents(String)
- */
- public void setContents(String contents) {
- int oldLength= fDocument.getLength();
-
- if (contents == null) {
-
- if (oldLength != 0)
- fSetCmd.set(""); //$NON-NLS-1$
-
- } else {
-
- // set only if different
- if (DEBUG_LINE_DELIMITERS) {
- validateLineDelimiters(contents);
- }
-
- if (!contents.equals(fDocument.get()))
- fSetCmd.set(contents);
- }
- }
-
-
- private void validateLineDelimiters(String contents) {
-
- if (fLegalLineDelimiters == null) {
- // collect all line delimiters in the document
- HashSet existingDelimiters= new HashSet();
-
- for (int i= fDocument.getNumberOfLines() - 1; i >= 0; i-- ) {
- try {
- String curr= fDocument.getLineDelimiter(i);
- if (curr != null) {
- existingDelimiters.add(curr);
- }
- } catch (BadLocationException e) {
- PHPeclipsePlugin.log(e);
- }
- }
- if (existingDelimiters.isEmpty()) {
- return; // first insertion of a line delimiter: no test
- }
- fLegalLineDelimiters= existingDelimiters;
-
- }
-
- DefaultLineTracker tracker= new DefaultLineTracker();
- tracker.set(contents);
-
- int lines= tracker.getNumberOfLines();
- if (lines <= 1)
- return;
-
- for (int i= 0; i < lines; i++) {
- try {
- String curr= tracker.getLineDelimiter(i);
- if (curr != null && !fLegalLineDelimiters.contains(curr)) {
- StringBuffer buf= new StringBuffer("New line delimiter added to new code: "); //$NON-NLS-1$
- for (int k= 0; k < curr.length(); k++) {
- buf.append(String.valueOf((int) curr.charAt(k)));
- }
- PHPeclipsePlugin.log(new Exception(buf.toString()));
- }
- } catch (BadLocationException e) {
- PHPeclipsePlugin.log(e);
- }
- }
- }
-
- /*
- * @see IDocumentListener#documentAboutToBeChanged(DocumentEvent)
- */
- public void documentAboutToBeChanged(DocumentEvent event) {
- // there is nothing to do here
- }
-
- /*
- * @see IDocumentListener#documentChanged(DocumentEvent)
- */
- public void documentChanged(DocumentEvent event) {
- fireBufferChanged(new BufferChangedEvent(this, event.getOffset(), event.getLength(), event.getText()));
- }
-
- private void fireBufferChanged(BufferChangedEvent event) {
- if (fBufferListeners != null && fBufferListeners.size() > 0) {
- Iterator e= new ArrayList(fBufferListeners).iterator();
- while (e.hasNext())
- ((IBufferChangedListener) e.next()).bufferChanged(event);
- }
- }
-}
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