| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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.eclipse.jdt.astview.views; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.graphics.FontData; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.widgets.Display; |
| |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.jface.viewers.IColorProvider; |
| import org.eclipse.jface.viewers.IFontProvider; |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jface.viewers.LabelProviderChangedEvent; |
| |
| import org.eclipse.ui.PlatformUI; |
| |
| import org.eclipse.jdt.core.Signature; |
| import org.eclipse.jdt.core.dom.ASTNode; |
| |
| public class ASTViewLabelProvider extends LabelProvider implements IColorProvider, IFontProvider { |
| private int fSelectionStart; |
| private int fSelectionLength; |
| |
| private final Color fBlue, fRed, fDarkGray, fDarkGreen, fDarkRed; |
| private final Font fBold; |
| |
| //to dispose: |
| private final Font fAllocatedBoldItalic; |
| private final Color fLightBlue, fLightRed; |
| |
| public ASTViewLabelProvider() { |
| fSelectionStart= -1; |
| fSelectionLength= -1; |
| |
| Display display= Display.getCurrent(); |
| |
| fRed= display.getSystemColor(SWT.COLOR_RED); |
| fDarkGray= display.getSystemColor(SWT.COLOR_DARK_GRAY); |
| fBlue= display.getSystemColor(SWT.COLOR_DARK_BLUE); |
| fDarkGreen= display.getSystemColor(SWT.COLOR_DARK_GREEN); |
| fDarkRed= display.getSystemColor(SWT.COLOR_DARK_RED); |
| |
| fLightBlue= new Color(display, 232, 242, 254); // default for AbstractDecoratedTextEditorPreferenceConstants.EDITOR_CURRENT_LINE_COLOR |
| fLightRed= new Color(display, 255, 190, 190); |
| |
| fBold= PlatformUI.getWorkbench().getThemeManager().getCurrentTheme().getFontRegistry().getBold(JFaceResources.DEFAULT_FONT); |
| FontData[] fontData= fBold.getFontData(); |
| for (int i= 0; i < fontData.length; i++) { |
| fontData[i].setStyle(fontData[i].getStyle() | SWT.ITALIC); |
| } |
| fAllocatedBoldItalic= new Font(display, fontData); |
| } |
| |
| public void setSelectedRange(int start, int length) { |
| fSelectionStart= start; |
| fSelectionLength= length; |
| // could be made more efficient by only updating selected node and parents (of old and new selection) |
| fireLabelProviderChanged(new LabelProviderChangedEvent(this)); |
| } |
| |
| public String getText(Object obj) { |
| StringBuffer buf= new StringBuffer(); |
| if (obj instanceof ASTNode) { |
| getNodeType((ASTNode) obj, buf); |
| } else if (obj instanceof ASTAttribute) { |
| buf.append(((ASTAttribute) obj).getLabel()); |
| } |
| return buf.toString(); |
| } |
| |
| private void getNodeType(ASTNode node, StringBuffer buf) { |
| buf.append(Signature.getSimpleName(node.getClass().getName())); |
| buf.append(" ["); //$NON-NLS-1$ |
| buf.append(node.getStartPosition()); |
| buf.append(", "); //$NON-NLS-1$ |
| buf.append(node.getLength()); |
| buf.append(']'); |
| if ((node.getFlags() & ASTNode.MALFORMED) != 0) { |
| buf.append(" (malformed)"); //$NON-NLS-1$ |
| } |
| if ((node.getFlags() & ASTNode.RECOVERED) != 0) { |
| buf.append(" (recovered)"); //$NON-NLS-1$ |
| } |
| } |
| |
| |
| public Image getImage(Object obj) { |
| if (obj instanceof ASTNode) { |
| return null; |
| } else if (obj instanceof ASTAttribute) { |
| return ((ASTAttribute) obj).getImage(); |
| } |
| |
| return null; |
| // String imageKey = ISharedImages.IMG_OBJ_ELEMENT; |
| // if (obj instanceof ASTNode) { |
| // imageKey = ISharedImages.IMG_OBJ_FOLDER; |
| // } |
| // return PlatformUI.getWorkbench().getSharedImages().getImage(imageKey); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IColorProvider#getForeground(java.lang.Object) |
| */ |
| public Color getForeground(Object element) { |
| if ((element instanceof Error)) |
| return fRed; |
| if ((element instanceof ExceptionAttribute) && ((ExceptionAttribute) element).getException() != null) |
| return fRed; |
| |
| if (element instanceof ASTNode) { |
| ASTNode node= (ASTNode) element; |
| if ((node.getFlags() & ASTNode.MALFORMED) != 0) { |
| return fRed; |
| } |
| return fDarkGray; |
| } else if (element instanceof Binding) { |
| Binding binding= (Binding) element; |
| if (!binding.isRelevant()) |
| return fDarkGray; |
| return fBlue; |
| } else if (element instanceof NodeProperty) { |
| return null; // normal color |
| } else if (element instanceof BindingProperty) { |
| BindingProperty binding= (BindingProperty) element; |
| if (!binding.isRelevant()) |
| return fDarkGray; |
| return fBlue; |
| } else if (element instanceof JavaElement) { |
| JavaElement javaElement= (JavaElement) element; |
| if (javaElement.getJavaElement() == null || ! javaElement.getJavaElement().exists()) { |
| return fRed; |
| } |
| return fDarkGreen; |
| } |
| return fDarkRed; // all extra properties |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IColorProvider#getBackground(java.lang.Object) |
| */ |
| public Color getBackground(Object element) { |
| if (isNotProperlyNested(element)) { |
| return fLightRed; |
| } |
| if (fSelectionStart != -1 && isInside(element)) { |
| return fLightBlue; |
| } |
| return null; |
| } |
| |
| private boolean isNotProperlyNested(Object element) { |
| if (element instanceof ASTNode) { |
| ASTNode node= (ASTNode) element; |
| int start= node.getStartPosition(); |
| int end= start + node.getLength(); |
| |
| ASTNode parent= node.getParent(); |
| if (parent != null) { |
| int parentstart= parent.getStartPosition(); |
| int parentend= parentstart + parent.getLength(); |
| |
| if (start < parentstart || end > parentend) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| private boolean isInsideNode(ASTNode node) { |
| int start= node.getStartPosition(); |
| int end= start + node.getLength(); |
| if (start <= fSelectionStart && (fSelectionStart + fSelectionLength) < end) { |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean isInside(Object element) { |
| if (element instanceof ASTNode) { |
| return isInsideNode((ASTNode) element); |
| } else if (element instanceof NodeProperty) { |
| NodeProperty property= (NodeProperty) element; |
| Object object= property.getNode(); |
| if (object instanceof ASTNode) { |
| return isInsideNode((ASTNode) object); |
| } |
| } |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IFontProvider#getFont(java.lang.Object) |
| */ |
| public Font getFont(Object element) { |
| if (element instanceof ASTNode) { |
| ASTNode node= (ASTNode) element; |
| if ((node.getFlags() & ASTNode.RECOVERED) != 0) |
| return fAllocatedBoldItalic; |
| else |
| return fBold; |
| } |
| return null; |
| } |
| |
| public void dispose() { |
| super.dispose(); |
| fLightBlue.dispose(); |
| fLightRed.dispose(); |
| fAllocatedBoldItalic.dispose(); |
| } |
| |
| } |