    001    // Copyright 2006, 2007, 2008, 2009, 2010, 2011 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
    015    package org.apache.tapestry5.internal.services;
    016
    017    import org.apache.tapestry5.Asset;
    018    import org.apache.tapestry5.ComponentResources;
    019    import org.apache.tapestry5.FieldFocusPriority;
    020    import org.apache.tapestry5.RenderSupport;
    021    import org.apache.tapestry5.ioc.internal.util.InternalUtils;
    022    import org.apache.tapestry5.ioc.services.SymbolSource;
    023    import org.apache.tapestry5.json.JSONArray;
    024    import org.apache.tapestry5.json.JSONObject;
    025    import org.apache.tapestry5.services.AssetSource;
    026    import org.apache.tapestry5.services.javascript.JavaScriptSupport;
    027    import org.apache.tapestry5.services.javascript.StylesheetLink;
    028    import org.apache.tapestry5.services.javascript.StylesheetOptions;
    029
    030    public class RenderSupportImpl implements RenderSupport
    031    {
    032        private final SymbolSource symbolSource;
    033
    034        private final AssetSource assetSource;
    035
    036        private final JavaScriptSupport javascriptSupport;
    037
    038        // As of 5.2.1, RenderSupportImpl doesn't have any internal mutable state and could be converted
    039        // to a service (using the service proxy to the JSS)
    040        // instead of an Environmental. But we'll just delete it in 5.3.
    041
    042        /**
    043         * @param symbolSource
    044         *            Used to expand symbols (in {@linkplain #addClasspathScriptLink(String...)}
    045         * @param assetSource
    046         *            Used to convert classpath scripts to {@link org.apache.tapestry5.Asset}s
    047         * @param javascriptSupport
    048         *            Used to add JavaScript libraries and blocks of initialization JavaScript to the rendered page
    049         */
    050        public RenderSupportImpl(SymbolSource symbolSource, AssetSource assetSource, JavaScriptSupport javascriptSupport)
    051        {
    052            this.symbolSource = symbolSource;
    053            this.assetSource = assetSource;
    054            this.javascriptSupport = javascriptSupport;
    055        }
    056
    057        public String allocateClientId(String id)
    058        {
    059            return javascriptSupport.allocateClientId(id);
    060        }
    061
    062        public String allocateClientId(ComponentResources resources)
    063        {
    064            return javascriptSupport.allocateClientId(resources);
    065        }
    066
    067        public void addScriptLink(Asset... scriptAssets)
    068        {
    069            for (Asset asset : scriptAssets)
    070            {
    071                assert asset != null;
    072
    073                javascriptSupport.importJavaScriptLibrary(asset);
    074            }
    075        }
    076
    077        public void addScriptLink(String... scriptURLs)
    078        {
    079            for (String url : scriptURLs)
    080                javascriptSupport.importJavaScriptLibrary(url);
    081        }
    082
    083        public void addClasspathScriptLink(String... classpaths)
    084        {
    085            for (String path : classpaths)
    086                addScriptLinkFromClasspath(path);
    087        }
    088
    089        private void addScriptLinkFromClasspath(String path)
    090        {
    091            String expanded = symbolSource.expandSymbols(path);
    092
    093            Asset asset = assetSource.getAsset(null, expanded, null);
    094
    095            addScriptLink(asset);
    096        }
    097
    098        public void addScript(String script)
    099        {
    100            javascriptSupport.addScript(script);
    101        }
    102
    103        public void addScript(String format, Object... arguments)
    104        {
    105            javascriptSupport.addScript(format, arguments);
    106        }
    107
    108        public void addInit(String functionName, JSONArray parameterList)
    109        {
    110            javascriptSupport.addInitializerCall(functionName, parameterList);
    111        }
    112
    113        public void addInit(String functionName, JSONObject parameter)
    114        {
    115            javascriptSupport.addInitializerCall(functionName, parameter);
    116        }
    117
    118        public void addInit(String functionName, String... parameters)
    119        {
    120            JSONArray array = new JSONArray();
    121
    122            for (String parameter : parameters)
    123            {
    124                array.put(parameter);
    125            }
    126
    127            addInit(functionName, array);
    128        }
    129
    130        public void autofocus(FieldFocusPriority priority, String fieldId)
    131        {
    132            javascriptSupport.autofocus(priority, fieldId);
    133        }
    134
    135        public void addStylesheetLink(Asset stylesheet, String media)
    136        {
    137            javascriptSupport.importStylesheet(new StylesheetLink(stylesheet, new StylesheetOptions(media)));
    138        }
    139
    140        public void addStylesheetLink(String stylesheetURL, String media)
    141        {
    142            javascriptSupport.importStylesheet(new StylesheetLink(stylesheetURL, new StylesheetOptions(media)));
    143        }
    144    }