X-Git-Url: http://secure.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/actions/SelectionConverter.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/actions/SelectionConverter.java
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+/*******************************************************************************
+ * 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;
+	}
+}