| /******************************************************************************* |
| * Copyright (c) 2000, 2008 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.wst.jsdt.internal.ui.javaeditor; |
| |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.TextSelection; |
| import org.eclipse.wst.jsdt.core.IJavaScriptUnit; |
| import org.eclipse.wst.jsdt.core.IJavaScriptElement; |
| import org.eclipse.wst.jsdt.core.JavaScriptModelException; |
| import org.eclipse.wst.jsdt.core.dom.ASTNode; |
| import org.eclipse.wst.jsdt.core.dom.AbstractTypeDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.AnnotationTypeMemberDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.BodyDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.JavaScriptUnit; |
| import org.eclipse.wst.jsdt.core.dom.SingleVariableDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.VariableDeclarationFragment; |
| import org.eclipse.wst.jsdt.internal.corext.dom.Selection; |
| import org.eclipse.wst.jsdt.internal.corext.dom.SelectionAnalyzer; |
| import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin; |
| import org.eclipse.wst.jsdt.internal.ui.actions.SelectionConverter; |
| |
| /** |
| * A special text selection that gives access to the resolved and |
| * enclosing element. |
| */ |
| public class JavaTextSelection extends TextSelection { |
| |
| private IJavaScriptElement fElement; |
| private IJavaScriptElement[] fResolvedElements; |
| |
| private boolean fEnclosingElementRequested; |
| private IJavaScriptElement fEnclosingElement; |
| |
| private boolean fPartialASTRequested; |
| private JavaScriptUnit fPartialAST; |
| |
| private boolean fNodesRequested; |
| private ASTNode[] fSelectedNodes; |
| private ASTNode fCoveringNode; |
| |
| private boolean fInMethodBodyRequested; |
| private boolean fInMethodBody; |
| |
| private boolean fInClassInitializerRequested; |
| private boolean fInClassInitializer; |
| |
| private boolean fInVariableInitializerRequested; |
| private boolean fInVariableInitializer; |
| |
| /** |
| * Creates a new text selection at the given offset and length. |
| */ |
| public JavaTextSelection(IJavaScriptElement element, IDocument document, int offset, int length) { |
| super(document, offset, length); |
| fElement= element; |
| } |
| |
| /** |
| * Resolves the <code>IJavaScriptElement</code>s at the current offset. Returns |
| * an empty array if the string under the offset doesn't resolve to a |
| * <code>IJavaScriptElement</code>. |
| * |
| * @return the resolved java elements at the current offset |
| * @throws JavaScriptModelException passed from the underlying code resolve API |
| */ |
| public IJavaScriptElement[] resolveElementAtOffset() throws JavaScriptModelException { |
| if (fResolvedElements != null) |
| return fResolvedElements; |
| // long start= System.currentTimeMillis(); |
| fResolvedElements= SelectionConverter.codeResolve(fElement, this); |
| // System.out.println("Time resolving element: " + (System.currentTimeMillis() - start)); |
| return fResolvedElements; |
| } |
| |
| public IJavaScriptElement resolveEnclosingElement() throws JavaScriptModelException { |
| if (fEnclosingElementRequested) |
| return fEnclosingElement; |
| fEnclosingElementRequested= true; |
| fEnclosingElement= SelectionConverter.resolveEnclosingElement(fElement, this); |
| return fEnclosingElement; |
| } |
| |
| public JavaScriptUnit resolvePartialAstAtOffset() { |
| if (fPartialASTRequested) |
| return fPartialAST; |
| fPartialASTRequested= true; |
| if (! (fElement instanceof IJavaScriptUnit)) |
| return null; |
| // long start= System.currentTimeMillis(); |
| fPartialAST= JavaScriptPlugin.getDefault().getASTProvider().getAST(fElement, ASTProvider.WAIT_YES, null); |
| // System.out.println("Time requesting partial AST: " + (System.currentTimeMillis() - start)); |
| return fPartialAST; |
| } |
| |
| public ASTNode[] resolveSelectedNodes() { |
| if (fNodesRequested) |
| return fSelectedNodes; |
| fNodesRequested= true; |
| JavaScriptUnit root= resolvePartialAstAtOffset(); |
| if (root == null) |
| return null; |
| Selection ds= Selection.createFromStartLength(getOffset(), getLength()); |
| SelectionAnalyzer analyzer= new SelectionAnalyzer(ds, false); |
| root.accept(analyzer); |
| fSelectedNodes= analyzer.getSelectedNodes(); |
| fCoveringNode= analyzer.getLastCoveringNode(); |
| return fSelectedNodes; |
| } |
| |
| public ASTNode resolveCoveringNode() { |
| if (fNodesRequested) |
| return fCoveringNode; |
| resolveSelectedNodes(); |
| return fCoveringNode; |
| } |
| |
| public boolean resolveInMethodBody() { |
| if (fInMethodBodyRequested) |
| return fInMethodBody; |
| fInMethodBodyRequested= true; |
| resolveSelectedNodes(); |
| ASTNode node= getStartNode(); |
| if (node == null) { |
| fInMethodBody= true; |
| } else { |
| while (node != null) { |
| int nodeType= node.getNodeType(); |
| if (nodeType == ASTNode.BLOCK && node.getParent() instanceof BodyDeclaration) { |
| fInMethodBody= node.getParent().getNodeType() == ASTNode.FUNCTION_DECLARATION; |
| break; |
| } else if (nodeType == ASTNode.ANONYMOUS_CLASS_DECLARATION) { |
| fInMethodBody= false; |
| break; |
| } |
| node= node.getParent(); |
| } |
| } |
| return fInMethodBody; |
| } |
| |
| public boolean resolveInClassInitializer() { |
| if (fInClassInitializerRequested) |
| return fInClassInitializer; |
| fInClassInitializerRequested= true; |
| resolveSelectedNodes(); |
| ASTNode node= getStartNode(); |
| if (node == null) { |
| fInClassInitializer= true; |
| } else { |
| while (node != null) { |
| int nodeType= node.getNodeType(); |
| if (node instanceof AbstractTypeDeclaration) { |
| fInClassInitializer= false; |
| break; |
| } else if (nodeType == ASTNode.ANONYMOUS_CLASS_DECLARATION) { |
| fInClassInitializer= false; |
| break; |
| } else if (nodeType == ASTNode.INITIALIZER) { |
| fInClassInitializer= true; |
| break; |
| } |
| node= node.getParent(); |
| } |
| } |
| return fInClassInitializer; |
| } |
| |
| public boolean resolveInVariableInitializer() { |
| if (fInVariableInitializerRequested) |
| return fInVariableInitializer; |
| fInVariableInitializerRequested= true; |
| resolveSelectedNodes(); |
| ASTNode node= getStartNode(); |
| ASTNode last= null; |
| while (node != null) { |
| int nodeType= node.getNodeType(); |
| if (node instanceof AbstractTypeDeclaration) { |
| fInVariableInitializer= false; |
| break; |
| } else if (nodeType == ASTNode.ANONYMOUS_CLASS_DECLARATION) { |
| fInVariableInitializer= false; |
| break; |
| } else if (nodeType == ASTNode.VARIABLE_DECLARATION_FRAGMENT && |
| ((VariableDeclarationFragment)node).getInitializer() == last) { |
| fInVariableInitializer= true; |
| break; |
| } else if (nodeType == ASTNode.SINGLE_VARIABLE_DECLARATION && |
| ((SingleVariableDeclaration)node).getInitializer() == last) { |
| fInVariableInitializer= true; |
| break; |
| } else if (nodeType == ASTNode.ANNOTATION_TYPE_MEMBER_DECLARATION && |
| ((AnnotationTypeMemberDeclaration)node).getDefault() == last) { |
| fInVariableInitializer= true; |
| break; |
| } |
| last= node; |
| node= node.getParent(); |
| } |
| return fInVariableInitializer; |
| } |
| |
| private ASTNode getStartNode() { |
| if (fSelectedNodes != null && fSelectedNodes.length > 0) |
| return fSelectedNodes[0]; |
| else |
| return fCoveringNode; |
| } |
| } |