info.magnolia.filesystembrowser.app.action.availability.IsImageRule.java Source code

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Here is the source code for info.magnolia.filesystembrowser.app.action.availability.IsImageRule.java

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/**
 * This file Copyright (c) 2014 Magnolia International
 * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
 *
 *
 * This file is licensed under the MIT License (MIT)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */
package info.magnolia.filesystembrowser.app.action.availability;

import info.magnolia.ui.api.availability.AbstractAvailabilityRule;

import java.io.File;

import com.vaadin.util.FileTypeResolver;

/**
 * A class which checks whether an item is an image.
 */
public class IsImageRule extends AbstractAvailabilityRule {

    @Override
    protected boolean isAvailableForItem(Object itemId) {
        if (itemId instanceof File) {
            String mimeType = FileTypeResolver.getMIMEType((File) itemId);
            return (mimeType != null && mimeType.matches("image.*"));
        }
        return false;
    }
}