    001// Copyright 2008-2013 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007// http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.internal.services;
    016
    017import org.apache.tapestry5.internal.InternalConstants;
    018import org.apache.tapestry5.json.JSONArray;
    019import org.apache.tapestry5.json.JSONObject;
    020import org.apache.tapestry5.services.javascript.InitializationPriority;
    021import org.apache.tapestry5.services.javascript.ModuleConfigurationCallback;
    022import org.apache.tapestry5.services.javascript.StylesheetLink;
    023
    024import java.util.List;
    025
    026public class PartialMarkupDocumentLinker implements DocumentLinker
    027{
    028    private final JSONArray libraryURLs = new JSONArray();
    029
    030    private final JSONArray stylesheets = new JSONArray();
    031
    032    private final ModuleInitsManager initsManager = new ModuleInitsManager();
    033
    034    public void addCoreLibrary(String libraryURL)
    035    {
    036        notImplemented("addCoreLibrary");
    037    }
    038
    039    public void addLibrary(String libraryURL)
    040    {
    041        libraryURLs.put(libraryURL);
    042    }
    043
    044    public void addStylesheetLink(StylesheetLink stylesheet)
    045    {
    046        JSONObject object = new JSONObject(
    047
    048                "href", stylesheet.getURL(),
    049
    050                "media", stylesheet.getOptions().media);
    051
    052        stylesheets.put(object);
    053    }
    054
    055    private void notImplemented(String methodName)
    056    {
    057        throw new UnsupportedOperationException(String.format("DocumentLinker.%s() is not implemented for partial page renders.", methodName));
    058    }
    059
    060    public void addScript(InitializationPriority priority, String script)
    061    {
    062        notImplemented("addScript");
    063    }
    064
    065    public void addModuleConfigurationCallback(ModuleConfigurationCallback callback)
    066    {
    067        notImplemented("moduleConfigurationCallback");
    068    }
    069
    070    public void addInitialization(InitializationPriority priority, String moduleName, String functionName, JSONArray arguments)
    071    {
    072        initsManager.addInitialization(priority, moduleName, functionName, arguments);
    073    }
    074
    075    /**
    076     * Commits changes, adding one or more keys to the reply.
    077     *
    078     * @param reply
    079     *         JSON Object to be sent to client
    080     */
    081    public void commit(JSONObject reply)
    082    {
    083        if (libraryURLs.length() > 0)
    084        {
    085            reply.in(InternalConstants.PARTIAL_KEY).put("libraries", libraryURLs);
    086        }
    087
    088        if (stylesheets.length() > 0)
    089        {
    090            reply.in(InternalConstants.PARTIAL_KEY).put("stylesheets", stylesheets);
    091        }
    092
    093        List<?> inits = initsManager.getSortedInits();
    094
    095        if (inits.size() > 0)
    096        {
    097            reply.in(InternalConstants.PARTIAL_KEY).put("inits", JSONArray.from(inits));
    098        }
    099    }
    100}