org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/JavaVariableActionFilter.java

package org.eclipse.jdt.internal.debug.ui;

/**********************************************************************
Copyright (c) 2002 IBM Corp.  All rights reserved.
This file is made available under the terms of the Common Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/cpl-v10.html
**********************************************************************/

import java.util.HashSet;
import java.util.Set;

import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.model.IValue;
import org.eclipse.jdt.debug.core.IJavaDebugTarget;
import org.eclipse.jdt.debug.core.IJavaObject;
import org.eclipse.jdt.debug.core.IJavaVariable;
import org.eclipse.jdt.internal.debug.ui.actions.OpenVariableTypeAction;
import org.eclipse.ui.IActionFilter;

public class JavaVariableActionFilter implements IActionFilter {

	private static final Set fgPrimitiveTypes = initPrimitiveTypes();

	private static Set initPrimitiveTypes() {
		HashSet set = new HashSet(8);
		set.add("short"); //$NON-NLS-1$
		set.add("int"); //$NON-NLS-1$
		set.add("long"); //$NON-NLS-1$
		set.add("float"); //$NON-NLS-1$
		set.add("double"); //$NON-NLS-1$
		set.add("boolean"); //$NON-NLS-1$
		set.add("byte"); //$NON-NLS-1$
		set.add("char"); //$NON-NLS-1$
		return set;
	}

	/**
	 * @see org.eclipse.ui.IActionFilter#testAttribute(Object, String, String)
	 */
	public boolean testAttribute(Object target, String name, String value) {
		if (target instanceof IJavaVariable) {
			IJavaVariable var = (IJavaVariable) target;
			if (name.equals("PrimitiveVariableActionFilter") && value.equals("isPrimitive")) { //$NON-NLS-1$ //$NON-NLS-2$
				return isPrimitiveType(var);
			} else if (name.equals("ConcreteVariableActionFilter") && value.equals("isConcrete")) { //$NON-NLS-1$ //$NON-NLS-2$
				try {
					return isDeclaredSameAsConcrete(var);
				} catch (DebugException de) {
					JDIDebugUIPlugin.log(de);
				}
			} else if (name.equals("JavaVariableActionFilter") && value.equals("instanceFilter")) { //$NON-NLS-1$ //$NON-NLS-2$
				try {
					return !var.isStatic() && (var.getValue() instanceof IJavaObject) && ((IJavaDebugTarget)var.getDebugTarget()).supportsInstanceBreakpoints();
				} catch (DebugException exception) {
					JDIDebugUIPlugin.log(exception);
				}
			} else if (name.equals("DetailFormatterFilter") && value.equals("isDefined")) { //$NON-NLS-1$ //$NON-NLS-2$
				IValue varValue;
				try {
					varValue= var.getValue();
					return (varValue instanceof IJavaObject) && (JavaDetailFormattersManager.getDefault().hasAssociatedDetailFormatter(((IJavaObject)varValue).getJavaType()));
				} catch (DebugException exception) {
					JDIDebugUIPlugin.log(exception);
				}
			}
		}

		return false;
	}

	protected boolean isDeclaredSameAsConcrete(IJavaVariable var) throws DebugException {
		IValue value= var.getValue();
		return !var.getReferenceTypeName().equals(value.getReferenceTypeName());
	}
	protected String getTypeNameToOpen(IJavaVariable var) throws DebugException {
		String refType = var.getReferenceTypeName();
		refType = OpenVariableTypeAction.removeArray(refType);
		if (fgPrimitiveTypes.contains(refType)) {
			return null;
		}
		return refType;
	}

	protected boolean isPrimitiveType(IJavaVariable var) {
		try {
			return getTypeNameToOpen(var) != null;
		} catch (DebugException e) {
			JDIDebugUIPlugin.log(e);
			// fall through
		}
		return false;
	}
}