/******************************************************************************* * 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: *
part instanceof PHPEditor
: returns a structured selection
* using code resolve to convert the editor's text selection.part instanceof IWorkbenchPart
: returns the part's selection
* if it is a structured selection.default
: returns an empty structured selection.IJavaElement
*/
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 null
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;
}
}