/*******************************************************************************
* Mission Control Technologies, Copyright (c) 2009-2012, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* The MCT platform is licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0.
*
* 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.
*
* MCT includes source code licensed under additional open source licenses. See
* the MCT Open Source Licenses file included with this distribution or the About
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*******************************************************************************/
package gov.nasa.arc.mct.core.policy;
import gov.nasa.arc.mct.components.AbstractComponent;
import gov.nasa.arc.mct.core.components.TelemetryUserDropBoxComponent;
import gov.nasa.arc.mct.core.roles.DropboxCanvasView;
import gov.nasa.arc.mct.policy.ExecutionResult;
import gov.nasa.arc.mct.policy.Policy;
import gov.nasa.arc.mct.policy.PolicyContext;
import gov.nasa.arc.mct.services.component.ViewInfo;
import gov.nasa.arc.mct.services.component.ViewType;
import java.util.Arrays;
public final class DropboxFilterViewPolicy implements Policy {
private final String[] dropBoxComponentTypes = {TelemetryUserDropBoxComponent.class.getName()};
@Override
public ExecutionResult execute(PolicyContext context) {
ExecutionResult trueResult = new ExecutionResult(context, true, "");
AbstractComponent component = context.getProperty(PolicyContext.PropertyName.TARGET_COMPONENT.getName(), AbstractComponent.class);
if (!checkArguments(context, component))
return trueResult; // pass it over to the next policy in the chain
ViewType viewType = context
.getProperty(PolicyContext.PropertyName.VIEW_TYPE.getName(), ViewType.class);
ViewInfo targetViewInfo = context.getProperty(PolicyContext.PropertyName.TARGET_VIEW_INFO.getName(), ViewInfo.class);
if (viewType == ViewType.OBJECT || viewType == ViewType.CENTER) {
if (DropboxCanvasView.class.isAssignableFrom(targetViewInfo.getViewClass()) ||
targetViewInfo.getViewName().equals("Info"))
return new ExecutionResult(context, true, "");
}
return new ExecutionResult(context, false, "");
}
/*
* Checks whether context contains the correct set of arguments to process this policy.
*/
private boolean checkArguments(PolicyContext context, AbstractComponent component) {
if (context.getProperty(PolicyContext.PropertyName.TARGET_COMPONENT.getName(), AbstractComponent.class) == null)
return false;
if (!Arrays.asList(dropBoxComponentTypes).contains(component.getClass().getName()))
return false;
return !(context.getProperty(PolicyContext.PropertyName.VIEW_TYPE.getName(), ViewType.class) != ViewType.CENTER
&& context.getProperty(PolicyContext.PropertyName.VIEW_TYPE.getName(), ViewType.class) != ViewType.OBJECT);
}
}