--- /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 net.sourceforge.phpeclipse.ui.WebUI;
+
+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 = WebUI.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;
+ }
+}
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