org.jrebirth.af.presentation.command.ShowPreviousSlideCommand Maven / Gradle / Ivy

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Base files to build a JavaFX slide's presentation

There is a newer version: 8.6.0

/**
 * Get more info at : www.jrebirth.org .
 * Copyright JRebirth.org © 2011-2013
 * Contact : [email protected]
 *
 * 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.
 */
package org.jrebirth.af.presentation.command;

import org.jrebirth.af.api.wave.Wave;
import org.jrebirth.af.core.command.single.ui.DefaultUICommand;
import org.jrebirth.af.presentation.PrezWaves;
import org.jrebirth.af.presentation.ui.stack.SlideStackModel;

/**
 * The class ShowPreviousSlideCommand.
 *
 * @author Sébastien Bordes
 *
 */
public final class ShowPreviousSlideCommand extends DefaultUICommand {

    /**
     * {@inheritDoc}
     */
    @Override
    protected void perform(final Wave wave) {
        if (getModel(SlideStackModel.class).isReadyForSlideUpdate(true)) {
            getModel(SlideStackModel.class).previous(wave.get(PrezWaves.SKIP_SLIDE_STEP));
        }
    }

}