/*******************************************************************************
* Copyright (c) 2000, 2005 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.kacprzak.eclipse.django_editor.editors.outline;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.views.contentoutline.ContentOutlinePage;
/**
* A content outline page.
*/
public class DjangoContentOutlinePage extends ContentOutlinePage {
protected Object fInput;
protected IDocumentProvider fDocumentProvider;
protected ITextEditor fTextEditor;
/**
* Creates a content outline page using the given provider and the given editor.
*
* @param provider the document provider
* @param editor the editor
*/
public DjangoContentOutlinePage(IDocumentProvider provider, ITextEditor editor) {
super();
fDocumentProvider = provider;
fTextEditor = editor;
}
/* (non-Javadoc)
* Method declared on ContentOutlinePage
*/
public void createControl(Composite parent) {
super.createControl(parent);
TreeViewer viewer= getTreeViewer();
//viewer.setContentProvider(new ContentProvider());
viewer.setContentProvider(new DjangoOutlineProvider(fDocumentProvider, fInput));
viewer.setLabelProvider(new DjLabelProvider());
viewer.addSelectionChangedListener(this);
if (fInput != null) {
viewer.setInput(fInput);
viewer.expandAll();
}
}
/* (non-Javadoc)
* Method declared on ContentOutlinePage
*/
public void selectionChanged(SelectionChangedEvent event) {
super.selectionChanged(event);
ISelection selection= event.getSelection();
if (selection.isEmpty())
fTextEditor.resetHighlightRange();
else {
DjDocTag element= (DjDocTag) ((IStructuredSelection) selection).getFirstElement();
int start = element.getPositionStart().getOffset();
int end = 0;
int length = element.getPositionStart().getLength();
if (element.getPositionEnd() != null) {
end = element.getPositionEnd().getOffset();
length = end - start + element.getPositionEnd().getLength();
}
try {
fTextEditor.setHighlightRange(start, length, true);
// TODO: PREFERENCES: IF HIGHLIGHT up to end tag
fTextEditor.selectAndReveal(start, length);
} catch (IllegalArgumentException x) {
fTextEditor.resetHighlightRange();
}
}
}
/**
* Sets the input of the outline page
*
* @param input the input of this outline page
*/
public void setInput(Object input) {
fInput = input;
update();
}
/**
* Updates the outline page.
*/
public void update() {
TreeViewer viewer= getTreeViewer();
if (viewer != null) {
Control control= viewer.getControl();
if (control != null && !control.isDisposed()) {
control.setRedraw(false);
viewer.setInput(fInput);
viewer.expandAll();
control.setRedraw(true);
}
}
}
}