/*******************************************************************************
* Copyright (c) 2007, 2010 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.typehierarchy;
import java.util.HashMap;
import java.util.Iterator;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ILabelDecorator;
import org.eclipse.jface.viewers.StyledCellLabelProvider;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Display;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.internal.ui.viewsupport.CElementLabels;
import org.eclipse.cdt.ui.CElementImageDescriptor;
import org.eclipse.cdt.internal.ui.viewsupport.AppearanceAwareLabelProvider;
import org.eclipse.cdt.internal.ui.viewsupport.CElementImageProvider;
import org.eclipse.cdt.internal.ui.viewsupport.CUILabelProvider;
import org.eclipse.cdt.internal.ui.viewsupport.ImageImageDescriptor;
public class THLabelProvider extends AppearanceAwareLabelProvider {
private final static long LABEL_OPTIONS_SIMPLE= CElementLabels.ALL_FULLY_QUALIFIED | CElementLabels.M_PARAMETER_TYPES | CElementLabels.M_APP_RETURNTYPE | CElementLabels.F_APP_TYPE_SIGNATURE;
private final static long LABEL_OPTIONS_SHOW_FILES= LABEL_OPTIONS_SIMPLE | CElementLabels.MF_POST_FILE_QUALIFIED;
private CUILabelProvider fCLabelProvider= new CUILabelProvider(LABEL_OPTIONS_SIMPLE, 0);
private THHierarchyModel fModel;
private HashMap<String, Image> fCachedImages= new HashMap<String, Image>();
private Color fColorInactive;
private boolean fMarkImplementers= true;
private boolean fHideNonImplementers= false;
public THLabelProvider(Display display, THHierarchyModel model) {
fColorInactive= display.getSystemColor(SWT.COLOR_DARK_GRAY);
fModel= model;
}
@Override
public Image getImage(Object element) {
if (element instanceof THNode) {
THNode node= (THNode) element;
ICElement decl= node.getElement();
if (decl != null) {
if (node.isFiltered() ||
(fHideNonImplementers && !node.isImplementor())) {
fCLabelProvider.setImageFlags(CElementImageProvider.LIGHT_TYPE_ICONS);
}
Image image= fCLabelProvider.getImage(decl);
fCLabelProvider.setImageFlags(0);
if (image != null) {
return decorateImage(image, node);
}
}
}
else if (element instanceof ICElement) {
return fCLabelProvider.getImage(element);
}
return super.getImage(element);
}
@Override
public String getText(Object element) {
if (element instanceof THNode) {
THNode node= (THNode) element;
ICElement decl= node.getElement();
if (decl != null) {
String label= fCLabelProvider.getText(decl);
return decorateText(label, element);
}
}
return super.getText(element);
}
@Override
public StyledString getStyledText(Object element) {
if (element instanceof THNode) {
THNode node= (THNode) element;
ICElement decl= node.getElement();
if (decl != null) {
StyledString label= fCLabelProvider.getStyledText(decl);
if (fModel.isShowInheritedMembers()) {
}
String decorated= decorateText(label.getString(), element);
if (decorated != null) {
return StyledCellLabelProvider.styleDecoratedString(decorated, StyledString.DECORATIONS_STYLER, label);
}
return label;
}
}
return super.getStyledText(element);
}
@Override
public void dispose() {
fCLabelProvider.dispose();
for (Iterator<Image> iter = fCachedImages.values().iterator(); iter.hasNext();) {
Image image = iter.next();
image.dispose();
}
fCachedImages.clear();
super.dispose();
}
private Image decorateImage(Image image, THNode node) {
int flags= 0;
if (node.hasChildren()) {
if (fModel.getHierarchyKind() == THHierarchyModel.SUPER_TYPE_HIERARCHY) {
flags |= CElementImageDescriptor.RELATES_TO;
}
else {
flags |= CElementImageDescriptor.REFERENCED_BY;
}
}
if (fMarkImplementers && node.isImplementor()) {
flags |= CElementImageDescriptor.DEFINES;
}
String key= image.toString()+String.valueOf(flags);
Image result= fCachedImages.get(key);
if (result == null) {
ImageDescriptor desc= new CElementImageDescriptor(
new ImageImageDescriptor(image), flags, new Point(20,16));
result= desc.createImage();
fCachedImages.put(key, result);
}
return result;
}
@Override
public Color getForeground(Object element) {
if (element instanceof THNode) {
THNode node= (THNode) element;
if (node.isFiltered()) {
return fColorInactive;
}
}
return null;
}
public void setShowFiles(boolean show) {
fCLabelProvider.setTextFlags(show ? LABEL_OPTIONS_SHOW_FILES : LABEL_OPTIONS_SIMPLE);
}
public void setMarkImplementers(boolean val) {
fMarkImplementers= val;
}
public void setHideNonImplementers(boolean val) {
fHideNonImplementers= val;
}
@Override
public void addLabelDecorator(ILabelDecorator decorator) {
super.addLabelDecorator(decorator);
}
}