001// Copyright 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
015package org.apache.tapestry5.internal.services.javascript;
016
017import java.text.DateFormatSymbols;
018import java.util.Calendar;
019import java.util.Collections;
020import java.util.List;
021import java.util.Locale;
022
023import org.apache.tapestry5.Asset;
024import org.apache.tapestry5.SymbolConstants;
025import org.apache.tapestry5.func.F;
026import org.apache.tapestry5.func.Mapper;
027import org.apache.tapestry5.internal.TapestryInternalUtils;
028import org.apache.tapestry5.ioc.annotations.Symbol;
029import org.apache.tapestry5.ioc.services.ThreadLocale;
030import org.apache.tapestry5.json.JSONArray;
031import org.apache.tapestry5.json.JSONObject;
032import org.apache.tapestry5.services.AssetSource;
033import org.apache.tapestry5.services.javascript.JavaScriptStack;
034import org.apache.tapestry5.services.javascript.StylesheetLink;
035
036public class DateFieldStack implements JavaScriptStack
037{
038    private final ThreadLocale threadLocale;
039
040    private final boolean compactJSON;
041
042    private final List<Asset> javaScriptStack;
043
044    private final List<StylesheetLink> stylesheetStack;
045
046    public DateFieldStack(ThreadLocale threadLocale, @Symbol(SymbolConstants.COMPACT_JSON)
047    boolean compactJSON, final AssetSource assetSource)
048    {
049        this.threadLocale = threadLocale;
050        this.compactJSON = compactJSON;
051
052        Mapper<String, Asset> pathToAsset = new Mapper<String, Asset>()
053        {
054            public Asset map(String path)
055            {
056                return assetSource.getExpandedAsset(path);
057            }
058        };
059
060        Mapper<String, StylesheetLink> pathToStylesheetLink = F.combine(pathToAsset,
061                TapestryInternalUtils.assetToStylesheetLink);
062
063        javaScriptStack = F
064                .flow("${tapestry.datepicker}/js/datepicker.js", "org/apache/tapestry5/corelib/components/datefield.js")
065                .map(pathToAsset).toList();
066
067        stylesheetStack = F.flow("${tapestry.datepicker}/css/datepicker.css").map(pathToStylesheetLink).toList();
068    }
069
070    public String getInitialization()
071    {
072        Locale locale = threadLocale.getLocale();
073
074        JSONObject spec = new JSONObject();
075
076        DateFormatSymbols symbols = new DateFormatSymbols(locale);
077
078        spec.put("months", new JSONArray((Object[])symbols.getMonths()));
079
080        StringBuilder days = new StringBuilder();
081
082        String[] weekdays = symbols.getWeekdays();
083
084        Calendar c = Calendar.getInstance(locale);
085
086        int firstDay = c.getFirstDayOfWeek();
087
088        // DatePicker needs them in order from monday to sunday.
089
090        for (int i = Calendar.MONDAY; i <= Calendar.SATURDAY; i++)
091        {
092            days.append(weekdays[i].substring(0, 1));
093        }
094
095        days.append(weekdays[Calendar.SUNDAY].substring(0, 1));
096
097        spec.put("days", days.toString().toLowerCase(locale));
098
099        // DatePicker expects 0 to be monday. Calendar defines SUNDAY as 1, MONDAY as 2, etc.
100
101        spec.put("firstDay", firstDay == Calendar.SUNDAY ? 6 : firstDay - 2);
102
103        // TODO: Skip localization if locale is English?
104
105        return String.format("Tapestry.DateField.initLocalization(%s);", spec.toString(compactJSON));
106    }
107
108    public List<Asset> getJavaScriptLibraries()
109    {
110        return javaScriptStack;
111    }
112
113    public List<StylesheetLink> getStylesheets()
114    {
115        return stylesheetStack;
116    }
117
118    public List<String> getStacks()
119    {
120        return Collections.emptyList();
121    }
122}