/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.jsdt.ui.actions;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.PlatformUI;
import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
import org.eclipse.wst.jsdt.core.ISourceRange;
import org.eclipse.wst.jsdt.core.IType;
import org.eclipse.wst.jsdt.core.JavaScriptModelException;
import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringAvailabilityTester;
import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringExecutionStarter;
import org.eclipse.wst.jsdt.internal.corext.util.JavaModelUtil;
import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
import org.eclipse.wst.jsdt.internal.ui.actions.ActionUtil;
import org.eclipse.wst.jsdt.internal.ui.actions.SelectionConverter;
import org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaEditor;
import org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaTextSelection;
import org.eclipse.wst.jsdt.internal.ui.refactoring.RefactoringMessages;
import org.eclipse.wst.jsdt.internal.ui.util.ExceptionHandler;
/**
* Action to convert an anonymous inner class to a nested class.
*
* <p>
* This class may be instantiated; it is not intended to be subclassed.
* </p>
*
* Provisional API: This class/interface is part of an interim API that is still under development and expected to
* change significantly before reaching stability. It is being made available at this early stage to solicit feedback
* from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken
* (repeatedly) as the API evolves.
*/
public class ConvertAnonymousToNestedAction extends SelectionDispatchAction {
private final JavaEditor fEditor;
/**
* Note: This constructor is for internal use only. Clients should not call this constructor.
* @param editor the JavaScript editor
*/
public ConvertAnonymousToNestedAction(JavaEditor editor) {
super(editor.getEditorSite());
setText(RefactoringMessages.ConvertAnonymousToNestedAction_Convert_Anonymous);
fEditor= editor;
setEnabled(SelectionConverter.getInputAsCompilationUnit(fEditor) != null);
PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CONVERT_ANONYMOUS_TO_NESTED_ACTION);
}
/**
* Creates a new <code>ConvertAnonymousToNestedAction</code>. The action requires
* that the selection provided by the site's selection provider is of type
* <code>org.eclipse.jface.viewers.IStructuredSelection</code>.
*
* @param site the site providing context information for this action
*/
public ConvertAnonymousToNestedAction(IWorkbenchSite site) {
super(site);
fEditor= null;
setText(RefactoringMessages.ConvertAnonymousToNestedAction_Convert_Anonymous);
PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CONVERT_ANONYMOUS_TO_NESTED_ACTION);
}
//---- Structured selection -----------------------------------------------------
/* (non-Javadoc)
* Method declared on SelectionDispatchAction
*/
public void selectionChanged(IStructuredSelection selection) {
try {
setEnabled(RefactoringAvailabilityTester.isConvertAnonymousAvailable(selection));
} catch (JavaScriptModelException e) {
if (JavaModelUtil.isExceptionToBeLogged(e))
JavaScriptPlugin.log(e);
setEnabled(false);
}
}
/* (non-Javadoc)
* Method declared on SelectionDispatchAction
*/
public void run(IStructuredSelection selection) {
IType type= getElement(selection);
if (type == null)
return;
ISourceRange range;
try {
range= type.getNameRange();
run(type.getJavaScriptUnit(), range.getOffset(), range.getLength());
} catch (JavaScriptModelException e) {
ExceptionHandler.handle(e, RefactoringMessages.ConvertAnonymousToNestedAction_dialog_title, RefactoringMessages.NewTextRefactoringAction_exception);
}
}
private IType getElement(IStructuredSelection selection) {
if (selection.size() != 1)
return null;
Object element= selection.getFirstElement();
if (!(element instanceof IType))
return null;
IType type= (IType)element;
try {
if (type.isAnonymous())
return type;
} catch (JavaScriptModelException e) {
// fall through
}
return null;
}
//---- Text selection -----------------------------------------------------------
/* (non-Javadoc)
* Method declared on SelectionDispatchAction
*/
public void run(ITextSelection selection) {
try{
run(SelectionConverter.getInputAsCompilationUnit(fEditor), selection.getOffset(), selection.getLength());
} catch (JavaScriptModelException e){
ExceptionHandler.handle(e, RefactoringMessages.ConvertAnonymousToNestedAction_dialog_title, RefactoringMessages.NewTextRefactoringAction_exception);
}
}
/* (non-Javadoc)
* Method declared on SelectionDispatchAction
*/
public void selectionChanged(ITextSelection selection) {
setEnabled(fEditor != null && SelectionConverter.getInputAsCompilationUnit(fEditor) != null);
}
/**
* Note: This method is for internal use only. Clients should not call this method.
*/
public void selectionChanged(JavaTextSelection selection) {
try {
setEnabled(RefactoringAvailabilityTester.isConvertAnonymousAvailable(selection));
} catch (JavaScriptModelException e) {
setEnabled(false);
}
}
//---- helpers -------------------------------------------------------------------
private void run(IJavaScriptUnit unit, int offset, int length) throws JavaScriptModelException {
if (!ActionUtil.isEditable(fEditor, getShell(), unit))
return;
RefactoringExecutionStarter.startConvertAnonymousRefactoring(unit, offset, length, getShell());
}
}