org.vaadin.alump.scaleimage.gwt.client.conn.ScaleImageConnector.java Source code

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Here is the source code for org.vaadin.alump.scaleimage.gwt.client.conn.ScaleImageConnector.java

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/**
 * ScaleImageConnector.java (ScaleImage)
 * 
 * Copyright 2013 Vaadin Ltd, Sami Viitanen <alump@vaadin.org>
 *
 * 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.vaadin.alump.scaleimage.gwt.client.conn;

import org.vaadin.alump.scaleimage.gwt.client.GScaleImage;
import org.vaadin.alump.scaleimage.gwt.client.share.ScaleImageState;

import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.dom.client.Style;
import com.vaadin.client.communication.StateChangeEvent;
import com.vaadin.client.ui.AbstractComponentConnector;
import com.vaadin.client.ui.ClickEventHandler;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.shared.ui.AbstractEmbeddedState;
import com.vaadin.shared.ui.Connect;
import com.vaadin.shared.ui.image.ImageServerRpc;

/**
 * Connector for ScaleImage
 */
@SuppressWarnings("serial")
@Connect(org.vaadin.alump.scaleimage.ScaleImage.class)
public class ScaleImageConnector extends AbstractComponentConnector {

    @Override
    public ScaleImageState getState() {
        return (ScaleImageState) super.getState();
    }

    @Override
    public GScaleImage getWidget() {
        return (GScaleImage) super.getWidget();
    }

    @Override
    public void onStateChanged(StateChangeEvent event) {
        super.onStateChanged(event);

        clickEventHandler.handleEventHandlerRegistration();

        String url = getResourceUrl(AbstractEmbeddedState.SOURCE_RESOURCE);
        getWidget().setUrl(url);

        for (String property : getState().styleValues.keySet()) {
            String value = getState().styleValues.get(property);
            Style elementStyle = getWidget().getElement().getStyle();
            if (value == null || value.isEmpty()) {
                elementStyle.clearProperty(property);
            } else {
                elementStyle.setProperty(property, value);
            }
        }
    }

    protected final ClickEventHandler clickEventHandler = new ClickEventHandler(this) {

        @Override
        protected void fireClick(NativeEvent event, MouseEventDetails mouseDetails) {
            getRpcProxy(ScaleImageServerRpc.class).click(mouseDetails);
            event.stopPropagation();
        }

    };

}