/*******************************************************************************
* Copyright (c) 2000, 2012 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
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.viewsupport;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider;
import org.eclipse.jface.viewers.IDecorationContext;
import org.eclipse.jface.viewers.ILabelDecorator;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.jface.viewers.ViewerColumn;
import org.eclipse.jface.viewers.StyledString.Styler;
public class ColoringLabelProvider extends DecoratingStyledCellLabelProvider implements ILabelProvider {
public static final Styler HIGHLIGHT_STYLE= StyledString.createColorRegistryStyler(null, ColoredViewersManager.HIGHLIGHT_BG_COLOR_NAME);
public static final Styler HIGHLIGHT_WRITE_STYLE= StyledString.createColorRegistryStyler(null, ColoredViewersManager.HIGHLIGHT_WRITE_BG_COLOR_NAME);
public ColoringLabelProvider(IStyledLabelProvider labelProvider) {
this(labelProvider, null, null);
}
public ColoringLabelProvider(IStyledLabelProvider labelProvider, ILabelDecorator decorator, IDecorationContext decorationContext) {
super(labelProvider, decorator, decorationContext);
}
@Override
public void initialize(ColumnViewer viewer, ViewerColumn column) {
ColoredViewersManager.install(this);
setOwnerDrawEnabled(ColoredViewersManager.showColoredLabels());
super.initialize(viewer, column);
}
@Override
public void dispose() {
super.dispose();
ColoredViewersManager.uninstall(this);
}
public void refresh() {
ColumnViewer viewer= getViewer();
if (viewer == null) {
return;
}
boolean showColoredLabels= ColoredViewersManager.showColoredLabels();
if (showColoredLabels != isOwnerDrawEnabled()) {
setOwnerDrawEnabled(showColoredLabels);
viewer.refresh();
} else if (showColoredLabels) {
viewer.refresh();
}
}
@Override
protected StyleRange prepareStyleRange(StyleRange styleRange, boolean applyColors) {
if (!applyColors && styleRange.background != null) {
styleRange= super.prepareStyleRange(styleRange, applyColors);
styleRange.borderStyle= SWT.BORDER_DOT;
return styleRange;
}
return super.prepareStyleRange(styleRange, applyColors);
}
@Override
public String getText(Object element) {
return getStyledText(element).getString();
}
public static StyledString decorateStyledString(StyledString string, String decorated, Styler color) {
String label= string.getString();
int originalStart= decorated.indexOf(label);
if (originalStart == -1) {
return new StyledString(decorated); // the decorator did something wild
}
if (originalStart > 0) {
StyledString newString= new StyledString(decorated.substring(0, originalStart), color);
newString.append(string);
string= newString;
}
if (decorated.length() > originalStart + label.length()) { // decorator appended something
return string.append(decorated.substring(originalStart + label.length()), color);
}
return string; // no change
}
}