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/*******************************************************************************
* Copyright (c) 2018 Angelo ZERR.
* 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:
* Angelo Zerr <angelo.zerr@gmail.com> - [minimap] Initialize minimap view - Bug 535450
*******************************************************************************/
package org.eclipse.ui.internal.views.minimap;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.jface.text.ITextOperationTarget;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.ui.part.Page;
import org.eclipse.ui.texteditor.ITextEditor;
/**
* Minimap page which displays scaled content of the given text editor.
*
*/
public class MinimapPage extends Page {
/**
* Try to create a MinimapPage for a text editor. Only succeeds if the
* {@link ITextViewer} for the editor can be determined.
*
* @param textEditor
* the {@link ITextEditor} for which the page should be created.
* @return the created MinimapPage or <code>null</code>
*/
public static MinimapPage createMinimapPage(ITextEditor textEditor) {
ITextViewer textViewer = textEditor.getAdapter(ITextViewer.class);
if (textViewer == null) {
// try fallback that sometimes works (TextViewer implements
// ITextOperationTarget)
ITextOperationTarget textOperationTarget = textEditor.getAdapter(ITextOperationTarget.class);
if (textOperationTarget instanceof ITextViewer) {
textViewer = (ITextViewer) textOperationTarget;
}
}
if (textViewer == null) {
return null;
}
return new MinimapPage(textViewer);
}
private final ITextViewer fEditorViewer;
private MinimapWidget fMinimapWidget;
private MinimapPage(ITextViewer textViewer) {
fEditorViewer = textViewer;
}
@Override
public void createControl(Composite parent) {
// Create minimap styled text
fMinimapWidget = new MinimapWidget(parent, fEditorViewer);
fMinimapWidget.install();
}
@Override
public Control getControl() {
return fMinimapWidget.getControl();
}
@Override
public void setFocus() {
fMinimapWidget.getControl().setFocus();
}
@Override
public void dispose() {
fMinimapWidget.uninstall();
super.dispose();
}
}
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