| 1 | package de.ugoe.cs.swe.bnftools.ui.refactoring.removeunusedrules;
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| 2 |
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| 3 | import java.util.ArrayList;
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| 4 | import java.util.List;
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| 5 |
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| 6 | import org.eclipse.core.commands.AbstractHandler;
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| 7 | import org.eclipse.core.commands.ExecutionEvent;
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| 8 | import org.eclipse.core.commands.ExecutionException;
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| 9 | import org.eclipse.emf.ecore.EObject;
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| 10 | import org.eclipse.ltk.ui.refactoring.RefactoringWizard;
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| 11 | import org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation;
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| 12 | import org.eclipse.swt.widgets.Display;
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| 13 | import org.eclipse.ui.PlatformUI;
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| 14 | import org.eclipse.xtext.parsetree.AbstractNode;
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| 15 | import org.eclipse.xtext.parsetree.CompositeNode;
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| 16 | import org.eclipse.xtext.parsetree.NodeAdapter;
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| 17 | import org.eclipse.xtext.parsetree.NodeUtil;
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| 18 | import org.eclipse.xtext.resource.IResourceDescriptions;
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| 19 | import org.eclipse.xtext.ui.editor.XtextEditor;
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| 20 | import org.eclipse.xtext.ui.editor.model.XtextDocument;
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| 21 |
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| 22 | import com.google.inject.Inject;
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| 23 |
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| 24 | import de.ugoe.cs.swe.bnftools.ebnf.Rule;
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| 25 | import de.ugoe.cs.swe.bnftools.ui.quickfix.processors.RemoveUnusedRulesProcessor;
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| 26 | import de.ugoe.cs.swe.bnftools.ui.refactoring.generic.GenericRefactoring;
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| 27 | import de.ugoe.cs.swe.bnftools.ui.refactoring.generic.GenericRefactoringWizard;
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| 28 | import de.ugoe.cs.swe.bnftools.utils.RootEObjectFinder;
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| 29 | import de.ugoe.cs.swe.bnftools.utils.Utils;
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| 30 |
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| 31 | public class RemoveUnusedRulesRefactoringHandler extends AbstractHandler {
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| 32 |
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| 33 | @Inject
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| 34 | IResourceDescriptions resourceDescriptions;
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| 35 |
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| 36 | public Object execute(ExecutionEvent event) throws ExecutionException {
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| 37 | XtextEditor editor = (XtextEditor) PlatformUI.getWorkbench()
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| 38 | .getActiveWorkbenchWindow().getActivePage().getActiveEditor();
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| 39 |
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| 40 | //TODO: better error handling
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| 41 | if (!(editor.getDocument() instanceof XtextDocument)) {
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| 42 | return null;
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| 43 | }
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| 44 |
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| 45 | XtextDocument doc = (XtextDocument) editor.getDocument();
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| 46 | EObject root = doc.readOnly(new RootEObjectFinder());
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| 47 | NodeAdapter rootNode = NodeUtil.getNodeAdapter(root);
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| 48 |
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| 49 | List<CompositeNode> unusedRules = new ArrayList<CompositeNode>();
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| 50 |
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| 51 | int counter = 0;
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| 52 | for (int i=0; i < rootNode.getParserNode().getChildren().size(); i++) {
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| 53 | AbstractNode currentNode = rootNode.getParserNode().getChildren().get(i);
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| 54 | if (currentNode.getElement() instanceof Rule) {
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| 55 | Rule rule = (Rule) currentNode.getElement();
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| 56 | NodeAdapter declarationNode = NodeUtil.getNodeAdapter(rule);
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| 57 | List<CompositeNode> references = Utils.findReferences(rule,
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| 58 | resourceDescriptions, editor);
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| 59 |
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| 60 | if ((references.size() == 0) && (counter > 0)){
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| 61 | unusedRules.add(declarationNode.getParserNode());
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| 62 | }
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| 63 | counter++;
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| 64 | }
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| 65 | }
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| 66 |
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| 67 | RemoveUnusedRulesProcessor processor = new RemoveUnusedRulesProcessor(
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| 68 | editor, editor.getDocument(), unusedRules);
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| 69 |
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| 70 | GenericRefactoring refactoring = new GenericRefactoring(processor);
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| 71 |
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| 72 | GenericRefactoringWizard wizard = new GenericRefactoringWizard(
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| 73 | refactoring, RefactoringWizard.WIZARD_BASED_USER_INTERFACE);
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| 74 |
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| 75 | RefactoringWizardOpenOperation openOperation = new RefactoringWizardOpenOperation(
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| 76 | wizard);
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| 77 |
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| 78 | try {
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| 79 | openOperation.run(Display.getCurrent().getActiveShell(),
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| 80 | "Refactoring not possible!");
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| 81 | } catch (InterruptedException e1) {
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| 82 | e1.printStackTrace();
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| 83 | }
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| 84 |
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| 85 |
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| 86 | return null;
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| 87 | }
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| 88 |
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| 89 | }
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