/*******************************************************************************
* Copyright (c) 2007, 2017 Red Hat, Inc.
* 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:
* Red Hat - initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.internal.rpm.ui.editor.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.linuxtools.rpm.ui.editor.parser.SpecfileElement;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.views.contentoutline.ContentOutlinePage;
public class SpecfileContentOutlinePage extends ContentOutlinePage {
private ITextEditor editor;
private IEditorInput input;
public SpecfileContentOutlinePage(ITextEditor editor) {
super();
this.editor = editor;
}
public void setInput(IEditorInput editorInput) {
this.input = editorInput;
update();
}
public void update() {
// set the input so that the outlines parse can be called
// update the tree viewer state
final TreeViewer viewer = getTreeViewer();
if (viewer != null) {
final Control control = viewer.getControl();
if (control != null && !control.isDisposed()) {
control.getDisplay().asyncExec(() -> {
if (!control.isDisposed()) {
control.setRedraw(false);
if (input != null) {
viewer.setInput(input);
}
viewer.expandAll();
control.setRedraw(true);
}
});
}
}
}
@Override
public void createControl(Composite parent) {
super.createControl(parent);
TreeViewer viewer = getTreeViewer();
viewer.setContentProvider(new SpecfileContentProvider(editor));
SpecfileLabelProvider labelProvider = new SpecfileLabelProvider();
viewer.setLabelProvider(labelProvider);
viewer.addSelectionChangedListener(this);
if (input != null) {
viewer.setInput(input);
}
}
/*
* Change in selection
*/
@Override
public void selectionChanged(SelectionChangedEvent event) {
super.selectionChanged(event);
// find out which item in tree viewer we have selected, and set
// highlight range accordingly
ISelection selection = event.getSelection();
if (selection.isEmpty()) {
editor.resetHighlightRange();
} else {
SpecfileElement element = (SpecfileElement) ((IStructuredSelection) selection).getFirstElement();
int start = element.getLineStartPosition();
try {
editor.setHighlightRange(start, 1, true);
} catch (IllegalArgumentException e) {
editor.resetHighlightRange();
}
}
}
}