com.peter.vaadin.components.others.mycomponent.client.MyComponentConnector.java Source code

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Here is the source code for com.peter.vaadin.components.others.mycomponent.client.MyComponentConnector.java

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/*
 * Copyright 2013 HPD Software Ltd.
 *
 * 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 com.peter.vaadin.components.others.mycomponent.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Widget;
import com.peter.vaadin.components.others.mycomponent.MyComponent;
import com.peter.vaadin.components.others.mycomponent.client.MyComponentClientRpc;
import com.vaadin.client.MouseEventDetailsBuilder;
import com.vaadin.client.annotations.OnStateChange;
import com.vaadin.client.communication.StateChangeEvent;
import com.vaadin.client.ui.AbstractComponentConnector;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.shared.ui.Connect;

/**
 * A Trivial connector, to explore compiling WidgetSets
 *
 * From https://vaadin.com/wiki/-/wiki/Main/Creating%20a%20simple%20component
 */
@Connect(MyComponent.class)
public class MyComponentConnector extends AbstractComponentConnector {

    public MyComponentConnector() {
        registerRpc(MyComponentClientRpc.class, new MyComponentClientRpc() {
            private static final long serialVersionUID = -1056192951789062628L;

            public void alert(String message) {
                // TODO Do something useful
                Window.alert(message);
            }
        });

        // TODO ServerRpc usage example, do something useful instead
        getWidget().addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                final MouseEventDetails mouseDetails = MouseEventDetailsBuilder
                        .buildMouseEventDetails(event.getNativeEvent(), getWidget().getElement());
                MyComponentServerRpc rpc = getRpcProxy(MyComponentServerRpc.class);
                rpc.clicked(mouseDetails.getButtonName());
            }
        });

    }

    @Override
    protected Widget createWidget() {
        return GWT.create(MyComponentWidget.class);
    }

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

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

    @OnStateChange("text")
    void updateText() {
        getWidget().setText(getState().text);
    }

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

        // TODO do something useful
        final String text = getState().text;
        getWidget().setText(text);

        // Set a resource
        getWidget().setMyIcon(getResourceUrl("myIcon"));
    }

}