annis.gui.components.CssRenderInfo.java Source code

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Here is the source code for annis.gui.components.CssRenderInfo.java

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/*
 * Copyright 2013 Corpuslinguistic working group Humboldt University Berlin.
 *
 * 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 annis.gui.components;

import com.vaadin.annotations.JavaScript;
import com.vaadin.server.AbstractJavaScriptExtension;
import com.vaadin.server.ClientConnector;
import com.vaadin.ui.Component;
import com.vaadin.ui.JavaScriptFunction;
import elemental.json.JsonArray;
import org.json.JSONException;

/**
 *
 * @author Thomas Krause <krauseto@hu-berlin.de>
 */
@JavaScript({ "vaadin://jquery.js", "css_render_info.js" })
public class CssRenderInfo extends AbstractJavaScriptExtension {
    public CssRenderInfo(final Callback callback) {
        addFunction("publishResults", new JavaScriptFunction() {
            @Override
            public void call(JsonArray arguments) throws JSONException {
                if (callback != null) {
                    callback.renderInfoReceived((int) arguments.getNumber(0), (int) arguments.getNumber(1));
                }
            }
        });
    }

    public void calculate(String selector) {
        callFunction("calculate", selector);
    }

    @Override
    protected Class<? extends ClientConnector> getSupportedParentType() {
        return Component.class;
    }

    public static interface Callback {
        /**
         * Called whenever new data is available.
         * 
         * @param width The rendered width of the component
         * @param height The rendered height of the component
         */
        public void renderInfoReceived(int width, int height);
    }

}