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/*******************************************************************************
* Copyright (c) 2000, 2009 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.internal.ui.typehierarchy;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.wst.jsdt.core.IType;
import org.eclipse.wst.jsdt.core.ITypeHierarchy;
import org.eclipse.wst.jsdt.core.JavaScriptModelException;
import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
import org.eclipse.wst.jsdt.ui.IWorkingCopyProvider;
/**
* Content provider used for the method view.
* Allows also seeing methods inherited from base classes.
*/
public class MethodsContentProvider implements IStructuredContentProvider, IWorkingCopyProvider {
private static final Object[] NO_ELEMENTS = new Object[0];
private boolean fShowInheritedMethods;
private TypeHierarchyLifeCycle fHierarchyLifeCycle;
private TableViewer fViewer;
public MethodsContentProvider(TypeHierarchyLifeCycle lifecycle) {
fHierarchyLifeCycle= lifecycle;
fShowInheritedMethods= false;
fViewer= null;
}
/**
* Turn on / off showing of inherited methods
*/
public void showInheritedMethods(boolean show) {
if (show != fShowInheritedMethods) {
fShowInheritedMethods= show;
if (fViewer != null) {
fViewer.refresh();
}
}
}
/* (non-Javadoc)
* @see IStructuredContentProvider#providesWorkingCopies()
*/
public boolean providesWorkingCopies() {
return true;
}
/**
* Returns true if inherited methods are shown
*/
public boolean isShowInheritedMethods() {
return fShowInheritedMethods;
}
private void addAll(Object[] arr, List res) {
if (arr != null) {
for (int j= 0; j < arr.length; j++) {
res.add(arr[j]);
}
}
}
/*
* @see IStructuredContentProvider#getElements
*/
public Object[] getElements(Object element) {
if (element instanceof IType) {
IType type= (IType)element;
List res= new ArrayList();
try {
ITypeHierarchy hierarchy= fHierarchyLifeCycle.getHierarchy();
if (fShowInheritedMethods && hierarchy != null) {
IType[] allSupertypes= hierarchy.getAllSuperclasses(type);
// sort in from last to first: elements with same name
// will show up in hierarchy order
for (int i= allSupertypes.length - 1; i >= 0; i--) {
IType superType= allSupertypes[i];
if (superType.exists()) {
addAll(superType.getFunctions(), res);
addAll(superType.getInitializers(), res);
addAll(superType.getFields(), res);
}
}
}
if (type.exists()) {
addAll(type.getFunctions(), res);
addAll(type.getInitializers(), res);
addAll(type.getFields(), res);
}
} catch (JavaScriptModelException e) {
JavaScriptPlugin.log(e);
}
return res.toArray();
}
return NO_ELEMENTS;
}
/*
* @see IContentProvider#inputChanged
*/
public void inputChanged(Viewer input, Object oldInput, Object newInput) {
Assert.isTrue(input instanceof TableViewer);
fViewer= (TableViewer) input;
}
/*
* @see IContentProvider#dispose
*/
public void dispose() {
}
}
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