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/*******************************************************************************
* Copyright (c) 2011-2013 EclipseSource Muenchen GmbH 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:
* Eugen Neufeld - initial API and implementation
*
*******************************************************************************/
package org.eclipse.fx.ecp.ui.impl;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.fx.ecp.ui.Control.ApplicableTester;
public class StaticApplicableTester implements ApplicableTester {
private final int priority;
private final Class<?> supportedClassType;
private final Class<? extends EObject> supportedEObject;
private final String supportedFeature;
public StaticApplicableTester(int priority, Class<?> supportedClassType,
Class<? extends EObject> supportedEObject, String supportedFeature) {
this.priority = priority;
this.supportedClassType = supportedClassType;
this.supportedEObject = supportedEObject;
this.supportedFeature = supportedFeature;
}
public int isApplicable(EStructuralFeature feature, EObject eObject) {
// if the feature is a multiValue and the description is a singlevalue continue
// if (isSingleValue() == feature.isMany()) {
// return NOT_APPLICABLE;
// }
// if we have an attribute
if (EAttribute.class.isInstance(feature)) {
Class<?> instanceClass = ((EAttribute) feature).getEAttributeType().getInstanceClass();
// if the attribute class is an primitive test the primitive types
if (instanceClass.isPrimitive()) {
try {
Class<?> primitive = (Class<?>) getSupportedClassType().getField("TYPE").get(null); //$NON-NLS-1$
if (!primitive.equals(instanceClass)) {
return NOT_APPLICABLE;
}
} catch (IllegalArgumentException e) {
return NOT_APPLICABLE;
} catch (SecurityException e) {
return NOT_APPLICABLE;
} catch (IllegalAccessException e) {
return NOT_APPLICABLE;
} catch (NoSuchFieldException e) {
return NOT_APPLICABLE;
}
}
// otherwise test the classes itself
else if (!getSupportedClassType().isAssignableFrom(instanceClass)) {
return NOT_APPLICABLE;
}
}
// if we have an reference the the classes
else if (EReference.class.isInstance(feature)) {
Class<?> instanceClass = feature.getEType().getInstanceClass();
if (!getSupportedClassType().isAssignableFrom(instanceClass)) {
return NOT_APPLICABLE;
}
}
// if the supported eobject is assignable from the current eobject and the supported feature is either
// null or equals the current one
if (getSupportedEObject().isInstance(eObject)
&& (getSupportedFeature() == null || eObject.eClass().getEStructuralFeature(getSupportedFeature()).equals(feature))) {
return getPriority();
}
return NOT_APPLICABLE;
}
/**
* The static priority of the corresponding control.
*
* @return the priority
*/
public int getPriority() {
return priority;
}
/**
* The eobejct which is supported by the corresponding control.
*
* @return the class of the supported eobejct
*/
public Class<? extends EObject> getSupportedEObject() {
return supportedEObject;
}
/**
* The name of the feature the corresponding control supports.
*
* @return the name of the supported feature
*/
public String getSupportedFeature() {
return supportedFeature;
}
/**
* The class of the type the corresponding control supports.
*
* @return the class of the supported type
*/
public Class<?> getSupportedClassType() {
return supportedClassType;
}
}
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