com.google.gwt.search.client.Result.java Source code

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Here is the source code for com.google.gwt.search.client.Result.java

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/*
 * Copyright 2008 Google Inc.
 * 
 * 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.google.gwt.search.client;

import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.Widget;

import java.util.Date;

/**
 * The base class from which all search result types derive.
 */
public abstract class Result extends JavaScriptObject {
    /**
     * Invoke cloneNode on an Element. This needs to be moved into DOM.
     */
    static native Element cloneNode(Element elt) /*-{
                                                 return elt.cloneNode(true);
                                                 }-*/;

    @SuppressWarnings("deprecation")
    static Date makeDate(String date) {
        return new Date(date);
    }

    static Widget makeWidget(Element elt) {
        Widget toReturn = new SimplePanel();
        DOM.appendChild(toReturn.getElement(), cloneNode(elt));
        return toReturn;
    }

    protected Result() {
        // Required for overlay types
    }

    /**
     * A pre-rendered representation of the search result. The Result object will
     * produce only one Widget. Repeated calls will return the same Widget.
     * 
     * @return A Widget that will display the Result's data.
     */
    public final Widget getHtml() {
        Widget widget = getWidget();
        if (widget == null) {
            Element element = getElement();
            widget = makeWidget(element);
            setWidget(widget);
        }
        return widget;
    }

    public final ResultClass getResultClass() {
        String nativeResultClass = getResultClassString();
        if (nativeResultClass == null) {
            throw new NullPointerException("Couldn't find result class field in Gresult object");
        }
        return ResultClass.fromString(nativeResultClass);
    }

    public final native String getResultClassString() /*-{
                                                      return this["GsearchResultClass"];
                                                      }-*/;

    public final native String getString() /*-{
                                           return this.titleNoFormatting;
                                           }-*/;

    private native Element getElement() /*-{
                                        return this.html;
                                        }-*/;

    private native Widget getWidget() /*-{
                                      return this.widget;
                                      }-*/;

    private native void setWidget(Widget widget) /*-{
                                                 this.widget = widget;
                                                 }-*/;
}