[5] | 1 | package de.ugoe.cs.swe.bnftools.ui.refactoring.rename;
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| 2 |
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| 3 | import java.util.List;
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| 4 |
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| 5 | import org.eclipse.core.resources.IFile;
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| 6 | import org.eclipse.core.runtime.CoreException;
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| 7 | import org.eclipse.core.runtime.IProgressMonitor;
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| 8 | import org.eclipse.core.runtime.OperationCanceledException;
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| 9 | import org.eclipse.jface.text.ITextSelection;
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| 10 | import org.eclipse.ltk.core.refactoring.Change;
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| 11 | import org.eclipse.ltk.core.refactoring.CompositeChange;
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| 12 | import org.eclipse.ltk.core.refactoring.RefactoringStatus;
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| 13 | import org.eclipse.ltk.core.refactoring.TextFileChange;
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| 14 | import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
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| 15 | import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;
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| 16 | import org.eclipse.ltk.core.refactoring.participants.SharableParticipants;
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| 17 | import org.eclipse.text.edits.MultiTextEdit;
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| 18 | import org.eclipse.text.edits.ReplaceEdit;
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| 19 | import org.eclipse.text.edits.TextEditGroup;
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| 20 | import org.eclipse.xtext.parsetree.CompositeNode;
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| 21 | import org.eclipse.xtext.resource.IEObjectDescription;
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| 22 | import org.eclipse.xtext.resource.IResourceDescriptions;
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| 23 | import org.eclipse.xtext.ui.editor.XtextEditor;
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| 24 |
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| 25 | import de.ugoe.cs.swe.bnftools.ebnf.Rule;
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| 26 | import de.ugoe.cs.swe.bnftools.utils.EObjectSelectionResolver;
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| 27 | import de.ugoe.cs.swe.bnftools.utils.URIFragmentResolver;
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| 28 | import de.ugoe.cs.swe.bnftools.utils.Utils;
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| 29 |
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| 30 | public class RenameProcessor extends
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| 31 | org.eclipse.ltk.core.refactoring.participants.RenameProcessor {
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| 32 |
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| 33 | private List<CompositeNode> references = null;
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| 34 | private String currentName;
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| 35 | private CompositeNode declaration;
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| 36 | private IFile file;
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| 37 |
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| 38 | // --------------------------------------------------------------------------------
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| 39 |
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| 40 | public RenameProcessor(XtextEditor editor,
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| 41 | IResourceDescriptions resourceDescriptions) {
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| 42 |
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| 43 | final ITextSelection selection = (ITextSelection) editor
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| 44 | .getSelectionProvider().getSelection();
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| 45 |
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| 46 | final IEObjectDescription eObjectDescription = editor.getDocument()
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| 47 | .readOnly(new EObjectSelectionResolver(selection, resourceDescriptions));
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| 48 |
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| 49 | declaration = editor.getDocument().readOnly(
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| 50 | new URIFragmentResolver(eObjectDescription.getEObjectURI()
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| 51 | .fragment()));
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| 52 |
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| 53 | if (declaration.getElement() instanceof Rule) {
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| 54 | Rule r = (Rule) declaration.getElement();
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| 55 | currentName = r.getName();
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| 56 | }
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| 57 |
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| 58 | file = (IFile) editor.getEditorInput().getAdapter(IFile.class);
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| 59 |
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| 60 | if (eObjectDescription != null) {
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| 61 | references = Utils.findReferenceDescriptions(eObjectDescription, resourceDescriptions, editor);
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| 62 | }
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| 63 |
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| 64 | }
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| 65 |
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| 66 | // --------------------------------------------------------------------------------
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| 67 |
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| 68 | @Override
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| 69 | public Object[] getElements() {
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| 70 | return null;
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| 71 | }
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| 72 |
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| 73 | // --------------------------------------------------------------------------------
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| 74 |
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| 75 | @Override
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| 76 | public String getIdentifier() {
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| 77 | return "Rename Processor Identifier";
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| 78 | }
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| 79 |
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| 80 | // --------------------------------------------------------------------------------
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| 81 |
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| 82 | @Override
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| 83 | public String getProcessorName() {
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| 84 | return "Rename Processor";
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| 85 | }
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| 86 |
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| 87 | // --------------------------------------------------------------------------------
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| 88 |
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| 89 | @Override
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| 90 | public boolean isApplicable() throws CoreException {
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| 91 | return (references != null);
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| 92 | }
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| 93 |
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| 94 | // --------------------------------------------------------------------------------
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| 95 |
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| 96 | @Override
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| 97 | public RefactoringStatus checkInitialConditions(IProgressMonitor pm)
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| 98 | throws CoreException, OperationCanceledException {
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| 99 | RefactoringStatus status = new RefactoringStatus();
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| 100 |
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| 101 | if (references == null)
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| 102 | status.addFatalError("Could not obtain references!");
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| 103 |
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| 104 | return status;
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| 105 | }
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| 106 |
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| 107 | // --------------------------------------------------------------------------------
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| 108 |
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| 109 | @Override
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| 110 | public RefactoringStatus checkFinalConditions(IProgressMonitor pm,
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| 111 | CheckConditionsContext context) throws CoreException,
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| 112 | OperationCanceledException {
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| 113 | RefactoringStatus status = new RefactoringStatus();
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| 114 | RenameRefactoring refactoring = (RenameRefactoring) getRefactoring();
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| 115 | if (currentName.equals(refactoring.getRenameText())) {
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| 116 | status.addFatalError("Name unchanged!");
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| 117 | } else if (refactoring.getRenameText().length() <= 0) {
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| 118 | status.addFatalError("name must not be empty!");
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| 119 | }
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| 120 |
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| 121 | return status;
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| 122 | }
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| 123 |
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| 124 | // --------------------------------------------------------------------------------
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| 125 |
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| 126 | @Override
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| 127 | public Change createChange(IProgressMonitor pm) throws CoreException,
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| 128 | OperationCanceledException {
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| 129 | CompositeChange compositeChange = new CompositeChange("Rename");
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| 130 | pm.beginTask("Rename Refactoring", references.size());
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| 131 |
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| 132 | MultiTextEdit multiEdit = new MultiTextEdit();
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| 133 | TextFileChange fileChange = new TextFileChange("Declaraction Renaming", file);
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| 134 |
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| 135 | fileChange.setEdit(multiEdit);
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| 136 | fileChange.setTextType("bnf");
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| 137 | compositeChange.add(fileChange);
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| 138 |
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| 139 | RenameRefactoring refactoring = (RenameRefactoring) getRefactoring();
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| 140 | String replaceText = refactoring.getRenameText();
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| 141 |
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| 142 | ReplaceEdit replaceEdit = new ReplaceEdit(declaration.getOffset(), ((Rule)declaration.getElement()).getName().length(), replaceText);
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| 143 | multiEdit.addChild(replaceEdit);
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| 144 |
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| 145 | TextEditGroup editGroup = new TextEditGroup("declaration update", replaceEdit);
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| 146 | fileChange.addTextEditGroup(editGroup);
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| 147 | pm.worked(1);
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| 148 |
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| 149 |
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| 150 | for (int i=0; i < references.size(); i++) {
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| 151 | CompositeNode reference = references.get(i);
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| 152 |
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| 153 | replaceEdit = new ReplaceEdit(reference.getOffset(), ((Rule)declaration.getElement()).getName().length(), replaceText);
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| 154 | multiEdit.addChild(replaceEdit);
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| 155 | editGroup = new TextEditGroup("reference update", replaceEdit);
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| 156 | fileChange.addTextEditGroup(editGroup);
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| 157 |
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| 158 | pm.worked(1);
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| 159 | }
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| 160 |
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| 161 | return compositeChange;
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| 162 | }
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| 163 |
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| 164 | // --------------------------------------------------------------------------------
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| 165 |
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| 166 | @Override
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| 167 | public RefactoringParticipant[] loadParticipants(RefactoringStatus status,
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| 168 | SharableParticipants sharedParticipants) throws CoreException {
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| 169 | return null;
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| 170 | }
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| 171 |
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| 172 | // --------------------------------------------------------------------------------
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| 173 |
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| 174 |
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| 175 | }
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