我想通过 Eclipse RAP 创建 highchart 小部件并且我遵循 "RAP/Custom Widgets FAQ"，但是有错误？

Question

我想通过 Eclipse RAP 创建一些 highchart 小部件，我按照这样的官方指南

句柄：

var CKEDITOR_BASEPATH = "rwt-resources/";
(function(){
    'use strict';
    rap.registerTypeHandler( "rap.sunline.HighCharts", {
       factory : function( properties ) {
            var parent = rap.getObject( properties.parent );
            // var element = document.createElement( "div" );
            // parent.append( element );
            // $(element).html("askldfjaskljdk");
            return {};
       }
    });
}());

widget.java:

public class HightChartComposite extends Composite {

    private static final String RESOURCES_PATH = "resources/";
    private static final String REGISTER_PATH = "hightcharts/";

    private static final String[] RESOURCE_FILES = { "jquery-2.1.0.min.js", "highcharts.js","ChartPaintListener.js" };
    private static final String REMOTE_TYPE = "rap.sunline.HightCharts";

    private final RemoteObject remoteObject;

    private final OperationHandler operationHandler = new AbstractOperationHandler() {
        @Override
        public void handleSet(JsonObject properties) {
//          JsonValue textValue = properties.get("text");
//          if (textValue != null) {
//              text = textValue.asString();
//          }
        }
    };

    public HightChartComposite(Composite parent, int style) {
        super(parent, style);
        registerResources();
        loadJavaScript();
        Connection connection = RWT.getUISession().getConnection();
        remoteObject = connection.createRemoteObject(REMOTE_TYPE);
        remoteObject.setHandler(operationHandler);
        remoteObject.set("parent", WidgetUtil.getId(this));
    }

    private void registerResources() {
        ResourceManager resourceManager = RWT.getResourceManager();
        boolean isRegistered = resourceManager.isRegistered(REGISTER_PATH + RESOURCE_FILES[0]);
        if (!isRegistered) {
            try {
                for (String fileName : RESOURCE_FILES) {
                    register(resourceManager, fileName);
                }
            } catch (IOException ioe) {
                throw new IllegalArgumentException("Failed to load resources", ioe);
            }
        }
    }

    private void loadJavaScript() {
        JavaScriptLoader jsLoader = RWT.getClient().getService(JavaScriptLoader.class);
        ResourceManager resourceManager = RWT.getResourceManager();
        jsLoader.require(resourceManager.getLocation(REGISTER_PATH + "jquery-2.1.0.min.js"));
        jsLoader.require(resourceManager.getLocation(REGISTER_PATH + "highcharts.js"));
        jsLoader.require(resourceManager.getLocation(REGISTER_PATH + "ChartPaintListener.js"));
    }

    private void register(ResourceManager resourceManager, String fileName) throws IOException {
        ClassLoader classLoader = HightChartComposite.class.getClassLoader();
        InputStream inputStream = classLoader.getResourceAsStream(RESOURCES_PATH + fileName);
        try {
            resourceManager.register(REGISTER_PATH + fileName, inputStream);
        } finally {
            inputStream.close();
        }
    }

    // //////////////////
    // overwrite methods

    @Override
    public void setLayout(Layout layout) {
        throw new UnsupportedOperationException("Cannot change internal layout of CkEditor");
    }

}

发生错误：

Uncaught Error: Operation "create" on target "r6" of type "null" failed: No Handler for type rap.sunline.HightCharts Properties: parent = w5

我对此有疑问，extends Canvas 和 Composite;

有何不同

Answer 1

您忘记在 javascript 代码中实现设置器。

The created object is stored by the framework under its object id. This object has to implement setter methods that match the properties defined in the handler, which will then be called when the server sends a set operation for a given property.

我想通过 Eclipse RAP 创建 highchart 小部件并且我遵循 "RAP/Custom Widgets FAQ"，但是有错误？

I want to create highchart widget by Eclipse RAP and i follow "RAP/Custom Widgets FAQ",but there is error?

eclipse-rap