/*******************************************************************************
* Copyright (c) 2000, 2008 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.jface.contentassist;
import java.util.HashMap;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Text;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
/**
* Adapts a {@link org.eclipse.swt.widgets.Text} to an {@link org.eclipse.jface.contentassist.IContentAssistSubjectControl}.
*
* @see org.eclipse.swt.widgets.Text
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl
* @since 3.0
* @deprecated As of 3.2, replaced by Platform UI's field assist support
*/
public class TextContentAssistSubjectAdapter extends AbstractControlContentAssistSubjectAdapter {
/**
* The document backing this adapter's text widget.
*/
private class InternalDocument extends Document {
/**
* Updates this document with changes in this adapter's text widget.
*/
private ModifyListener fModifyListener;
private InternalDocument() {
super(fText.getText());
fModifyListener= new ModifyListener() {
/*
* @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent)
*/
public void modifyText(ModifyEvent e) {
set(fText.getText());
}
};
fText.addModifyListener(fModifyListener);
}
/*
* @see org.eclipse.jface.text.AbstractDocument#replace(int, int, java.lang.String)
*/
public void replace(int pos, int length, String text) throws BadLocationException {
super.replace(pos, length, text);
fText.removeModifyListener(fModifyListener);
fText.setText(get());
fText.addModifyListener(fModifyListener);
}
}
/** The text. */
private Text fText;
/** The modify listeners. */
private HashMap fModifyListeners= new HashMap();
/**
* Creates a content assist subject control adapter for the given text widget.
*
* @param text the text widget to adapt
*/
public TextContentAssistSubjectAdapter(Text text) {
Assert.isNotNull(text);
fText= text;
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#getControl()
*/
public Control getControl() {
return fText;
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#getLineHeight()
*/
public int getLineHeight() {
return fText.getLineHeight();
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#getCaretOffset()
*/
public int getCaretOffset() {
return fText.getCaretPosition();
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#getLocationAtOffset(int)
*/
public Point getLocationAtOffset(int offset) {
Point caretLocation= fText.getCaretLocation();
/*
* XXX: workaround for https://bugs.eclipse.org/bugs/show_bug.cgi?id=52520
*/
caretLocation.y += 2;
return caretLocation;
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#getWidgetSelectionRange()
*/
public Point getWidgetSelectionRange() {
return new Point(fText.getSelection().x, Math.abs(fText.getSelection().y - fText.getSelection().x));
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#getSelectedRange()
*/
public Point getSelectedRange() {
return new Point(fText.getSelection().x, Math.abs(fText.getSelection().y - fText.getSelection().x));
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#getDocument()
*/
public IDocument getDocument() {
IDocument document= (IDocument)fText.getData("document"); //$NON-NLS-1$
if (document == null) {
document= new InternalDocument() ;
fText.setData("document", document); //$NON-NLS-1$
}
return document;
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#setSelectedRange(int, int)
*/
public void setSelectedRange(int i, int j) {
fText.setSelection(new Point(i, i+j));
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#revealRange(int, int)
*/
public void revealRange(int i, int j) {
// XXX: this should be improved
fText.setSelection(new Point(i, i+j));
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#addSelectionListener(org.eclipse.swt.events.SelectionListener)
*/
public boolean addSelectionListener(final SelectionListener selectionListener) {
fText.addSelectionListener(selectionListener);
Listener listener= new Listener() {
/*
* @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
*/
public void handleEvent(Event e) {
selectionListener.widgetSelected(new SelectionEvent(e));
}
};
fText.addListener(SWT.Modify, listener);
fModifyListeners.put(selectionListener, listener);
return true;
}
/*
* @see org.eclipse.jface.contentassist.IContentAssistSubjectControl#removeSelectionListener(org.eclipse.swt.events.SelectionListener)
*/
public void removeSelectionListener(SelectionListener selectionListener) {
fText.removeSelectionListener(selectionListener);
Object listener= fModifyListeners.get(selectionListener);
if (listener instanceof Listener)
fText.removeListener(SWT.Modify, (Listener)listener);
}
}