com.google.caja.demos.playground.client.Playground.java Source code

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Here is the source code for com.google.caja.demos.playground.client.Playground.java

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// Copyright (C) 2009 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.caja.demos.playground.client;

import com.google.caja.demos.playground.client.ui.PlaygroundView;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;

/**
 * Main entry point for GWT-based Caja playground
 *
 * @author Jasvir Nagra (jasvir@gmail.com)
 */
public class Playground implements EntryPoint, ValueChangeHandler<String> {
    private PlaygroundView gui;

    private final PlaygroundServiceAsync cajolingService = GWT.create(PlaygroundService.class);

    public void loadSource(String url) {
        loadSource(Window.Location.getHref(), url);
    }

    public void loadSource(String base, String url) {
        gui.setLoading(true);
        gui.setUrl(url);
        if (!url.equals(History.getToken())) {
            History.newItem(url);
        }
        cajolingService.fetch(base, url, new AsyncCallback<String>() {
            public void onFailure(Throwable caught) {
                gui.setLoading(false);
                gui.addRuntimeMessage(caught.getMessage());
                gui.selectTab(PlaygroundView.Tabs.RUNTIME_WARNINGS);
            }

            public void onSuccess(String result) {
                gui.setLoading(false);
                gui.setOriginalSource(result);
                gui.selectTab(PlaygroundView.Tabs.SOURCE);
            }
        });
    }

    public void clearPolicy() {
        gui.setPolicySource("");
    }

    public void loadPolicy(String url) {
        gui.setLoading(true);
        gui.setPolicyUrl(url);
        cajolingService.fetch(Window.Location.getHref(), url, new AsyncCallback<String>() {
            public void onFailure(Throwable caught) {
                gui.setLoading(false);
                gui.addRuntimeMessage(caught.getMessage());
                gui.selectTab(PlaygroundView.Tabs.RUNTIME_WARNINGS);
            }

            public void onSuccess(String result) {
                gui.setLoading(false);
                gui.setPolicySource(result);
                gui.selectTab(PlaygroundView.Tabs.POLICY);
            }
        });
    }

    /**
     * @param uri not used.
     * @param debugMode not used.
     */
    public void cajole(String uri, String input, final String policy, boolean debugMode, final String opt_idClass) {
        gui.setLoading(true);
        gui.selectTab(PlaygroundView.Tabs.RENDER);
        gui.setRenderedResult(uri, policy, input, null, opt_idClass);
        gui.setLoading(false);
    }

    public void onValueChange(ValueChangeEvent<String> change) {
        String historyToken = change.getValue();
        if (null == historyToken || "".equals(historyToken))
            return;
        loadSource(historyToken);
    }

    public void onModuleLoad() {
        gui = new PlaygroundView(this);
        gui.setLoading(true);
        cajolingService.getBuildInfo(new AsyncCallback<String>() {
            public void onFailure(Throwable caught) {
                gui.setLoading(false);
                gui.addRuntimeMessage(caught.getMessage());
                gui.setVersion("Unknown");
            }

            public void onSuccess(String result) {
                gui.setLoading(false);
                gui.setVersion(result);
            }
        });
        History.addValueChangeHandler(this);
        History.fireCurrentHistoryState();
    }
}