--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.actions;
+
+import java.util.Iterator;
+
+import net.sourceforge.phpdt.core.ICompilationUnit;
+import net.sourceforge.phpdt.core.IJavaElement;
+import net.sourceforge.phpdt.core.IType;
+import net.sourceforge.phpdt.core.JavaModelException;
+import net.sourceforge.phpdt.internal.ui.util.ExceptionHandler;
+import net.sourceforge.phpdt.ui.IWorkingCopyManager;
+import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+import net.sourceforge.phpeclipse.phpeditor.PHPEditor;
+
+import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.jface.viewers.StructuredSelection;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.IEditorInput;
+import org.eclipse.ui.IWorkbenchPart;
+
+public class SelectionConverter {
+
+ private static final IJavaElement[] EMPTY_RESULT= new IJavaElement[0];
+
+ private SelectionConverter() {
+ // no instance
+ }
+
+ /**
+ * Converts the selection provided by the given part into a structured selection.
+ * The following conversion rules are used:
+ * <ul>
+ * <li><code>part instanceof PHPEditor</code>: returns a structured selection
+ * using code resolve to convert the editor's text selection.</li>
+ * <li><code>part instanceof IWorkbenchPart</code>: returns the part's selection
+ * if it is a structured selection.</li>
+ * <li><code>default</code>: returns an empty structured selection.</li>
+ * </ul>
+ */
+ public static IStructuredSelection getStructuredSelection(IWorkbenchPart part) throws JavaModelException {
+ if (part instanceof PHPEditor)
+ return new StructuredSelection(codeResolve((PHPEditor)part));
+ ISelectionProvider provider= part.getSite().getSelectionProvider();
+ if (provider != null) {
+ ISelection selection= provider.getSelection();
+ if (selection instanceof IStructuredSelection)
+ return (IStructuredSelection)selection;
+ }
+ return StructuredSelection.EMPTY;
+ }
+
+
+ /**
+ * Converts the given structured selection into an array of Java elements.
+ * An empty array is returned if one of the elements stored in the structured
+ * selection is not of tupe <code>IJavaElement</code>
+ */
+ public static IJavaElement[] getElements(IStructuredSelection selection) {
+ if (!selection.isEmpty()) {
+ IJavaElement[] result= new IJavaElement[selection.size()];
+ int i= 0;
+ for (Iterator iter= selection.iterator(); iter.hasNext(); i++) {
+ Object element= (Object) iter.next();
+ if (!(element instanceof IJavaElement))
+ return EMPTY_RESULT;
+ result[i]= (IJavaElement)element;
+ }
+ return result;
+ }
+ return EMPTY_RESULT;
+ }
+
+ public static boolean canOperateOn(PHPEditor editor) {
+ if (editor == null)
+ return false;
+ return getInput(editor) != null;
+
+ }
+
+ /**
+ * Converts the text selection provided by the given editor into an array of
+ * Java elements. If the selection doesn't cover a Java element and the selection's
+ * length is greater than 0 the methods returns the editor's input element.
+ */
+ public static IJavaElement[] codeResolveOrInput(PHPEditor editor) throws JavaModelException {
+ IJavaElement input= getInput(editor);
+ ITextSelection selection= (ITextSelection)editor.getSelectionProvider().getSelection();
+ IJavaElement[] result= codeResolve(input, selection);
+ if (result.length == 0) {
+ result= new IJavaElement[] {input};
+ }
+ return result;
+ }
+
+ public static IJavaElement[] codeResolveOrInputHandled(PHPEditor editor, Shell shell, String title) {
+ try {
+ return codeResolveOrInput(editor);
+ } catch(JavaModelException e) {
+ ExceptionHandler.handle(e, shell, title, ActionMessages.getString("SelectionConverter.codeResolve_failed")); //$NON-NLS-1$
+ }
+ return null;
+ }
+
+ /**
+ * Converts the text selection provided by the given editor a Java element by
+ * asking the user if code reolve returned more than one result. If the selection
+ * doesn't cover a Java element and the selection's length is greater than 0 the
+ * methods returns the editor's input element.
+ */
+ public static IJavaElement codeResolveOrInput(PHPEditor editor, Shell shell, String title, String message) throws JavaModelException {
+ IJavaElement[] elements= codeResolveOrInput(editor);
+ if (elements == null || elements.length == 0)
+ return null;
+ IJavaElement candidate= elements[0];
+ if (elements.length > 1) {
+ candidate= OpenActionUtil.selectJavaElement(elements, shell, title, message);
+ }
+ return candidate;
+ }
+
+ public static IJavaElement codeResolveOrInputHandled(PHPEditor editor, Shell shell, String title, String message) {
+ try {
+ return codeResolveOrInput(editor, shell, title, message);
+ } catch (JavaModelException e) {
+ ExceptionHandler.handle(e, shell, title, ActionMessages.getString("SelectionConverter.codeResolveOrInput_failed")); //$NON-NLS-1$
+ }
+ return null;
+ }
+
+ public static IJavaElement[] codeResolve(PHPEditor editor) throws JavaModelException {
+ return codeResolve(getInput(editor), (ITextSelection)editor.getSelectionProvider().getSelection());
+ }
+
+ /**
+ * Converts the text selection provided by the given editor a Java element by
+ * asking the user if code reolve returned more than one result. If the selection
+ * doesn't cover a Java element <code>null</code> is returned.
+ */
+ public static IJavaElement codeResolve(PHPEditor editor, Shell shell, String title, String message) throws JavaModelException {
+ IJavaElement[] elements= codeResolve(editor);
+ if (elements == null || elements.length == 0)
+ return null;
+ IJavaElement candidate= elements[0];
+ if (elements.length > 1) {
+ candidate= OpenActionUtil.selectJavaElement(elements, shell, title, message);
+ }
+ return candidate;
+ }
+
+ public static IJavaElement[] codeResolveHandled(PHPEditor editor, Shell shell, String title) {
+ try {
+ return codeResolve(editor);
+ } catch (JavaModelException e) {
+ ExceptionHandler.handle(e, shell, title, ActionMessages.getString("SelectionConverter.codeResolve_failed")); //$NON-NLS-1$
+ }
+ return null;
+ }
+
+ public static IJavaElement getElementAtOffset(PHPEditor editor) throws JavaModelException {
+ return getElementAtOffset(getInput(editor), (ITextSelection)editor.getSelectionProvider().getSelection());
+ }
+
+ public static IType getTypeAtOffset(PHPEditor editor) throws JavaModelException {
+ IJavaElement element= SelectionConverter.getElementAtOffset(editor);
+ IType type= (IType)element.getAncestor(IJavaElement.TYPE);
+ if (type == null) {
+ ICompilationUnit unit= SelectionConverter.getInputAsCompilationUnit(editor);
+ if (unit != null)
+ type= unit.findPrimaryType();
+ }
+ return type;
+ }
+
+ public static IJavaElement getInput(PHPEditor editor) {
+ if (editor == null)
+ return null;
+ IEditorInput input= editor.getEditorInput();
+// if (input instanceof IClassFileEditorInput)
+// return ((IClassFileEditorInput)input).getClassFile();
+ IWorkingCopyManager manager= PHPeclipsePlugin.getDefault().getWorkingCopyManager();
+ return manager.getWorkingCopy(input);
+ }
+
+ public static ICompilationUnit getInputAsCompilationUnit(PHPEditor editor) {
+ Object editorInput= SelectionConverter.getInput(editor);
+ if (editorInput instanceof ICompilationUnit)
+ return (ICompilationUnit)editorInput;
+ else
+ return null;
+ }
+
+ private static IJavaElement[] codeResolve(IJavaElement input, ITextSelection selection) throws JavaModelException {
+// if (input instanceof ICodeAssist) {
+// IJavaElement[] elements= ((ICodeAssist)input).codeSelect(selection.getOffset(), selection.getLength());
+// if (elements != null && elements.length > 0)
+// return elements;
+// }
+ return EMPTY_RESULT;
+ }
+
+ private static IJavaElement getElementAtOffset(IJavaElement input, ITextSelection selection) throws JavaModelException {
+ if (input instanceof ICompilationUnit) {
+ ICompilationUnit cunit= (ICompilationUnit)input;
+ if (cunit.isWorkingCopy()) {
+ synchronized (cunit) {
+ cunit.reconcile();
+ }
+ }
+ IJavaElement ref= cunit.getElementAt(selection.getOffset());
+ if (ref == null)
+ return input;
+ else
+ return ref;
+ }
+// else if (input instanceof IClassFile) {
+// IJavaElement ref= ((IClassFile)input).getElementAt(selection.getOffset());
+// if (ref == null)
+// return input;
+// else
+// return ref;
+// }
+ return null;
+ }
+}
git://git.phpeclipse.com / phpeclipse.git / blobdiff