/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.eclipse.org/org/documents/epl-v10.php
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ide.eclipse.adt.internal.build.builders;
import com.android.sdklib.SdkConstants;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
/**
* Delta visitor specifically for Library resources.
* The goal is to detect library resource/library changes when compiling the main project
* and trigger a resource recompilation/repackaging.
*
*/
public class LibraryDeltaVisitor implements IResourceDeltaVisitor {
private boolean mResChange = false;
private boolean mLibChange = false;
public boolean getResChange() {
return mResChange;
}
public boolean getLibChange() {
return mLibChange;
}
public boolean visit(IResourceDelta delta) throws CoreException {
// we are only going to look for changes in res/
// Since the delta visitor goes through the main
// folder before its children we can check when the path segment
// count is 2 (format will be /$Project/folder) and make sure we are
// processing res/
IResource resource = delta.getResource();
IPath path = resource.getFullPath();
String[] segments = path.segments();
// since the delta visitor also visits the root we return true if
// segments.length = 1
if (segments.length == 1) {
// this is always the Android project since we call
// Builder#getDelta(IProject) on the project itself.
return true;
} else if (segments.length == 2) {
if (SdkConstants.FD_RESOURCES.equalsIgnoreCase(segments[1])) {
// res folder was changed!
// This is all that matters, we can stop (return false below)
mResChange = true;
} else if (SdkConstants.FD_NATIVE_LIBS.equalsIgnoreCase(segments[1])) {
// libs folder was changed.
// This is all that matters, we can stop (return false below)
mLibChange = true;
}
}
return false;
}
}