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Case Study: adding data and statistics
[ifi-stolz-refaktor.git] / case-study / jdt-after / core extension / org / eclipse / jdt / internal / corext / template / java / CompilationUnitContext.java
diff --git a/case-study/jdt-after/core extension/org/eclipse/jdt/internal/corext/template/java/CompilationUnitContext.java b/case-study/jdt-after/core extension/org/eclipse/jdt/internal/corext/template/java/CompilationUnitContext.java
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+/*******************************************************************************
+ * 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.jdt.internal.corext.template.java;
+
+import java.util.Collection;
+
+import org.eclipse.swt.graphics.Image;
+
+import org.eclipse.core.runtime.CoreException;
+
+import org.eclipse.jface.viewers.StyledCellLabelProvider;
+import org.eclipse.jface.viewers.StyledString;
+
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.DocumentEvent;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.Position;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.templates.DocumentTemplateContext;
+import org.eclipse.jface.text.templates.Template;
+import org.eclipse.jface.text.templates.TemplateBuffer;
+import org.eclipse.jface.text.templates.TemplateContextType;
+import org.eclipse.jface.text.templates.TemplateException;
+
+import org.eclipse.jdt.core.ICompilationUnit;
+import org.eclipse.jdt.core.IJavaElement;
+import org.eclipse.jdt.core.IJavaProject;
+import org.eclipse.jdt.core.JavaModelException;
+import org.eclipse.jdt.core.dom.Statement;
+
+import org.eclipse.jdt.internal.corext.util.Messages;
+
+import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal;
+
+import org.eclipse.jdt.internal.ui.JavaPlugin;
+import org.eclipse.jdt.internal.ui.JavaPluginImages;
+import org.eclipse.jdt.internal.ui.text.correction.AssistContext;
+import org.eclipse.jdt.internal.ui.text.correction.CorrectionMessages;
+import org.eclipse.jdt.internal.ui.text.correction.QuickTemplateProcessor;
+import org.eclipse.jdt.internal.ui.text.correction.SurroundWith;
+import org.eclipse.jdt.internal.ui.text.template.contentassist.MultiVariableGuess;
+import org.eclipse.jdt.internal.ui.text.template.contentassist.SurroundWithTemplateProposal;
+import org.eclipse.jdt.internal.ui.text.template.contentassist.TemplateProposal;
+
+
+/**
+ * A compilation unit context.
+ */
+public abstract class CompilationUnitContext extends DocumentTemplateContext {
+
+       /** The compilation unit, may be <code>null</code>. */
+       private final ICompilationUnit fCompilationUnit;
+       /** A flag to force evaluation in head-less mode. */
+       protected boolean fForceEvaluation;
+       /** A global state for proposals that change if a master proposal changes. */
+       protected MultiVariableGuess fMultiVariableGuess;
+       /** <code>true</code> if the context has a managed (i.e. added to the document) position, <code>false</code> otherwise. */
+       protected final boolean fIsManaged;
+
+       /**
+        * Creates a compilation unit context.
+        *
+        * @param type   the context type
+        * @param document the document
+        * @param completionOffset the completion position within the document
+        * @param completionLength the completion length within the document
+        * @param compilationUnit the compilation unit (may be <code>null</code>)
+        */
+       protected CompilationUnitContext(TemplateContextType type, IDocument document, int completionOffset, int completionLength, ICompilationUnit compilationUnit) {
+               super(type, document, completionOffset, completionLength);
+               fCompilationUnit= compilationUnit;
+               fIsManaged= false;
+       }
+
+       /**
+        * Creates a compilation unit context.
+        *
+        * @param type   the context type
+        * @param document the document
+        * @param completionPosition the position defining the completion offset and length
+        * @param compilationUnit the compilation unit (may be <code>null</code>)
+        * @since 3.2
+        */
+       protected CompilationUnitContext(TemplateContextType type, IDocument document, Position completionPosition, ICompilationUnit compilationUnit) {
+               super(type, document, completionPosition);
+               fCompilationUnit= compilationUnit;
+               fIsManaged= true;
+       }
+
+       /**
+        * Returns the compilation unit if one is associated with this context,
+        * <code>null</code> otherwise.
+        *
+        * @return the compilation unit of this context or <code>null</code>
+        */
+       public final ICompilationUnit getCompilationUnit() {
+               return fCompilationUnit;
+       }
+
+       /**
+        * Returns the enclosing element of a particular element type,
+        * <code>null</code> if no enclosing element of that type exists.
+        *
+        * @param elementType the element type
+        * @return the enclosing element of the given type or <code>null</code>
+        */
+       public IJavaElement findEnclosingElement(int elementType) {
+               if (fCompilationUnit == null)
+                       return null;
+
+               try {
+                       IJavaElement element= fCompilationUnit.getElementAt(getStart());
+                       if (element == null) {
+                               element= fCompilationUnit;
+                       }
+
+                       return element.getAncestor(elementType);
+
+               } catch (JavaModelException e) {
+                       return null;
+               }
+       }
+
+       /**
+        * Sets whether evaluation is forced or not.
+        *
+        * @param evaluate <code>true</code> in order to force evaluation,
+        *            <code>false</code> otherwise
+        */
+       public void setForceEvaluation(boolean evaluate) {
+               fForceEvaluation= evaluate;
+       }
+
+       /**
+        * Returns the multi-variable guess.
+        *
+        * @return the multi-variable guess
+        */
+       public MultiVariableGuess getMultiVariableGuess() {
+               return fMultiVariableGuess;
+       }
+
+       /**
+        * @param multiVariableGuess The multiVariableGuess to set.
+        */
+       void setMultiVariableGuess(MultiVariableGuess multiVariableGuess) {
+               fMultiVariableGuess= multiVariableGuess;
+       }
+
+       protected IJavaProject getJavaProject() {
+               ICompilationUnit compilationUnit= getCompilationUnit();
+               IJavaProject project= compilationUnit == null ? null : compilationUnit.getJavaProject();
+               return project;
+       }
+
+       public void generated_2978296146101812129(IDocument document, ICompilationUnit cu, int offset, int length, Collection<IJavaCompletionProposal> result, QuickTemplateProcessor quicktemplateprocessor)
+                       throws BadLocationException, CoreException {
+               setVariable("selection", document.get(offset, length)); //$NON-NLS-1$
+               setForceEvaluation(true);
+       
+               int start= getStart();
+               int end= getEnd();
+               IRegion region= new Region(start, end - start);
+       
+               AssistContext invocationContext= new AssistContext(cu, start, end - start);
+               Statement[] selectedStatements= SurroundWith.getSelectedStatements(invocationContext);
+       
+               Template[] templates= JavaPlugin.getDefault().getTemplateStore().getTemplates();
+               for (int i= 0; i != templates.length; i++) {
+                       Template currentTemplate= templates[i];
+                       if (quicktemplateprocessor.canEvaluate(this, currentTemplate)) {
+       
+                               if (selectedStatements != null) {
+                                       Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
+                                       TemplateProposal proposal= new SurroundWithTemplateProposal(cu, currentTemplate, this, region, image, selectedStatements);
+                                       String[] arg= new String[] { currentTemplate.getName(), currentTemplate.getDescription() };
+                                       String decorated= Messages.format(CorrectionMessages.QuickTemplateProcessor_surround_label, arg);
+                                       proposal.setDisplayString(StyledCellLabelProvider.styleDecoratedString(decorated, StyledString.QUALIFIER_STYLER, new StyledString(currentTemplate.getName())));
+                                       result.add(proposal);
+                               } else {
+                                       TemplateProposal proposal= new TemplateProposal(currentTemplate, this, region, JavaPluginImages.get(JavaPluginImages.IMG_OBJS_TEMPLATE)) {
+                                               /**
+                                                * {@inheritDoc}
+                                                */
+                                               @Override
+                                               public boolean validate(IDocument doc, int off, DocumentEvent event) {
+                                                       return false;
+                                               }
+                                       };
+                                       String[] arg= new String[] { currentTemplate.getName(), currentTemplate.getDescription() };
+                                       String decorated= Messages.format(CorrectionMessages.QuickTemplateProcessor_surround_label, arg);
+                                       proposal.setDisplayString(StyledCellLabelProvider.styleDecoratedString(decorated, StyledString.QUALIFIER_STYLER, new StyledString(currentTemplate.getName())));
+                                       result.add(proposal);
+                               }
+                       }
+               }
+       }
+
+       public String generated_7438537663912731634(IDocument document, SurroundWithTemplateProposal surroundwithtemplateproposal) throws BadLocationException {
+               int offset= getCompletionOffset();
+               int start= getStart();
+               int end= getEnd();
+               IRegion region= new Region(start, end - start);
+       
+               setReadOnly(false);
+               TemplateBuffer templateBuffer;
+               try {
+                       templateBuffer= evaluate(surroundwithtemplateproposal.fTemplate);
+               } catch (TemplateException e1) {
+                       JavaPlugin.log(e1);
+                       return null;
+               }
+       
+               start= region.getOffset();
+               end= region.getOffset() + region.getLength();
+               end= Math.max(end, offset);
+       
+               String templateString= templateBuffer.getString();
+               document.replace(start, end - start, templateString);
+       
+               return document.get();
+       }
+
+       public void generated_5472318693531917302(ITextViewer viewer, char trigger, int stateMask, SurroundWithTemplateProposal surroundwithtemplateproposal) {
+               int start= getStart();
+               int end= getEnd();
+               IRegion region= new Region(start, end - start);
+       
+               //Evaluate the template within the new context
+               surroundwithtemplateproposal.fProposal= new TemplateProposal(surroundwithtemplateproposal.fTemplate, this, region, null);
+               surroundwithtemplateproposal.fProposal.apply(viewer, trigger, stateMask, getCompletionOffset());
+       }
+
+       public CompilationUnitContext generated_6219744471917571491() {
+               setForceEvaluation(true);
+               return this;
+       }
+
+       public void generated_551997803931588642() {
+               if (getKey().length() == 0)
+                       setForceEvaluation(true);
+       }
+}