org.waveprotocol.box.webclient.stat.gwtevent.GwtStatisticsEvent.java Source code

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Here is the source code for org.waveprotocol.box.webclient.stat.gwtevent.GwtStatisticsEvent.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.waveprotocol.box.webclient.stat.gwtevent;

import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.JsArrayString;

import java.util.Iterator;

/**
 * Java "Overlay" object of the event objects fired by the GWT stats system.
 */
public class GwtStatisticsEvent extends JavaScriptObject /*implements StatisticsEvent*/ {
    protected GwtStatisticsEvent() {
    }

    public final native String getModuleName() /*-{
                                               return this.moduleName == null ? null : "" + this.moduleName;
                                               }-*/;

    public final native String getSubSystem() /*-{
                                              return this.subSystem == null ? null : "" + this.subSystem;
                                              }-*/;

    public final native String getEventGroupKey() /*-{
                                                  return this.evtGroup == null ? null : "" + this.evtGroup;
                                                  }-*/;

    public final native double getMillis() /*-{
                                           return this.millis == null ? 0 : this.millis;
                                           }-*/;

    private final native JsArrayString getExtraParameterNames0() /*-{
                                                                 if (!this.extraParameters) {
                                                                 var a = new Array();
                                                                 for (name in this) {
                                                                 if (name != "moduleName" && name != "subSystem" && name != "evtGroup" && name != "millis") {
                                                                 a.push(name);
                                                                 }
                                                                 }
                                                                 this.extraParameters = a;
                                                                 }
                                                                 return this.extraParameters
                                                                 }-*/;

    public final native Object getExtraParameter(String name) /*-{
                                                              var r = this[name], t = typeof(r);
                                                              if (t == "number") {
                                                              r = @java.lang.Double::new(D)(r);
                                                              } else if (t == "boolean") {
                                                              r = @java.lang.Boolean::new(Z)(r);
                                                              }
                                                              return r;
                                                              }-*/;

    public final StatisticsEvent asEvent() {
        return new StatisticsEvent() {
            //@Override
            public String getModuleName() {
                return GwtStatisticsEvent.this.getModuleName();
            }

            //@Override
            public String getSubSystem() {
                return GwtStatisticsEvent.this.getSubSystem();
            }

            //@Override
            public String getEventGroupKey() {
                return GwtStatisticsEvent.this.getEventGroupKey();
            }

            //@Override
            public double getMillis() {
                return GwtStatisticsEvent.this.getMillis();
            }

            //@Override
            public Iterator<String> getExtraParameterNames() {
                final JsArrayString names = getExtraParameterNames0();
                return new Iterator<String>() {
                    private int idx = 0;

                    //@Override
                    public boolean hasNext() {
                        return idx < names.length();
                    }

                    //@Override
                    public String next() {
                        return names.get(idx++);
                    }

                    //@Override
                    public void remove() {
                        throw new RuntimeException("parameter names are read-only");
                    }
                };
            }

            //@Override
            public Object getExtraParameter(String name) {
                return GwtStatisticsEvent.this.getExtraParameter(name);
            }
        };
    }

    public static GwtStatisticsEvent fromEvent(StatisticsEvent event) {
        GwtStatisticsEvent result = fromEvent0(event.getModuleName(), event.getSubSystem(),
                event.getEventGroupKey(), event.getMillis());
        for (Iterator<String> it = event.getExtraParameterNames(); it.hasNext();) {
            String name = it.next();
            set(result, name, event.getExtraParameter(name));
        }
        return result;
    }

    private static native GwtStatisticsEvent fromEvent0(String moduleName, String subSystem, String eventGroup,
            double millis) /*-{
                           var result = {
                           moduleName: moduleName,
                           subSystem: subSystem,
                           evtGroup: eventGroup,
                           millis: millis,
                           };
                           return result;
                           }-*/;

    private static native void set(GwtStatisticsEvent event, String name, Object value) /*-{
                                                                                        event[name] = value;
                                                                                        }-*/;
}