/*******************************************************************************
 * Copyright (c) 2000, 2004 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.ui.internal.ide.model;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.IMarkerActionFilter;
import org.eclipse.ui.actions.SimpleWildcardTester;
import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
import org.eclipse.ui.model.WorkbenchAdapter;

/**
 * Model object for adapting IMarker objects to the IWorkbenchAdapter
 * interface.
 */
public class WorkbenchMarker extends WorkbenchAdapter implements
        IMarkerActionFilter {
    /*
     *  (non-Javadoc)
     * @see org.eclipse.ui.model.IWorkbenchAdapter#getImageDescriptor(java.lang.Object)
     */
    public ImageDescriptor getImageDescriptor(Object o) {
        if (!(o instanceof IMarker))
            return null;
        return IDEWorkbenchPlugin.getDefault().getMarkerImageProviderRegistry()
                .getImageDescriptor((IMarker) o);
    }

    /*
     *  (non-Javadoc)
     * @see org.eclipse.ui.model.IWorkbenchAdapter#getLabel(java.lang.Object)
     */
    public String getLabel(Object o) {
        IMarker marker = (IMarker) o;
        return marker.getAttribute(IMarker.MESSAGE, "");//$NON-NLS-1$
    }

    /*
     *  (non-Javadoc)
     * @see org.eclipse.ui.model.IWorkbenchAdapter#getParent(java.lang.Object)
     */
    public Object getParent(Object o) {
        return ((IMarker) o).getResource();
    }

    /**
     * Returns whether the specific attribute matches the state of the target
     * object.
     *
     * @param target the target object
     * @param name the attribute name
     * @param value the attriute value
     * @return <code>true</code> if the attribute matches; <code>false</code> otherwise
     */
    public boolean testAttribute(Object target, String name, String value) {
        IMarker marker = (IMarker) target;
        if (name.equals(TYPE)) {
            try {
                return value.equals(marker.getType());
            } catch (CoreException e) {
                return false;
            }
        } else if (name.equals(SUPER_TYPE)) {
            try {
                return marker.isSubtypeOf(value);
            } catch (CoreException e) {
                return false;
            }
        } else if (name.equals(PRIORITY)) {
            return testIntegerAttribute(marker, IMarker.PRIORITY, value);
        } else if (name.equals(SEVERITY)) {
            return testIntegerAttribute(marker, IMarker.SEVERITY, value);
        } else if (name.equals(MESSAGE)) {
            try {
                String msg = (String) marker.getAttribute(IMarker.MESSAGE);
                if (msg == null)
                    return false;
                return SimpleWildcardTester.testWildcardIgnoreCase(value, msg);
            } catch (CoreException e) {
                return false;
            }
        } else if (name.equals(DONE)) {
            try {
                value = value.toLowerCase();
                Boolean done = (Boolean) marker.getAttribute(IMarker.DONE);
                if (done == null)
                    return false;
                return (done.booleanValue() == value.equals("true"));//$NON-NLS-1$
            } catch (CoreException e) {
                return false;
            }
        } else if (name.equals(RESOURCE_TYPE)) {
            int desiredType = 0;

            try {
                desiredType = Integer.parseInt(value);
            } catch (NumberFormatException eNumberFormat) {
            }

            if (!(desiredType == IResource.FILE
                    || desiredType == IResource.FOLDER
                    || desiredType == IResource.PROJECT || desiredType == IResource.ROOT))
                return false;

            return (marker.getResource().getType() & desiredType) > 0;
        }
        return false;
    }

    /**
     * Returns whether the specific integer attribute matches a value.
     */
    private boolean testIntegerAttribute(IMarker marker, String attrName,
            String value) {
        Integer i1, i2;
        try {
            i1 = (Integer) marker.getAttribute(attrName);
            if (i1 == null)
                return false;
        } catch (CoreException e) {
            return false;
        }
        try {
            i2 = Integer.valueOf(value);
        } catch (NumberFormatException e) {
            return false;
        }
        return i1.equals(i2);
    }
}