com.hydro4ge.raphaelgwt.client.Injector.java Source code

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Here is the source code for com.hydro4ge.raphaelgwt.client.Injector.java

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/*
 * Copyright 2010-2014 Hydro4GE, Incorporated. http://www.hydro4ge.com/
 *
 * 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.hydro4ge.raphaelgwt.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.ScriptInjector;
import com.google.gwt.resources.client.ClientBundle;
import com.google.gwt.resources.client.TextResource;

class Injector {
    private static boolean loaded = false;

    static class JsPicker {
        public TextResource pick(JsResources bundle) {
            return bundle.raphaelMinJs();
        }
    }

    static class DebugJsPicker extends JsPicker {
        public TextResource pick(JsResources bundle) {
            return bundle.raphaelDebugJs();
        }
    }

    public interface JsResources extends ClientBundle {
        @Source("raphael-min.js")
        TextResource raphaelMinJs();

        @Source("raphael.js")
        TextResource raphaelDebugJs();
    }

    static public void ensureInjected() {
        if (!loaded) {
            loaded = true;
            JsResources bundle = GWT.create(JsResources.class);
            JsPicker picker = GWT.create(JsPicker.class);
            ScriptInjector.fromString(picker.pick(bundle).getText()).setWindow(ScriptInjector.TOP_WINDOW).inject();
        }
    }
}