src/ElmSharp/ElmSharp/Calendar.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 using System;
  18 using System.Collections.Generic;
  19 using System.Linq;
  20 using System.Runtime.InteropServices;
  21
  22 namespace ElmSharp
  23 {
  24     /// <summary>
  25     /// Enumeration for event periodicity, used to define if a mark should be repeated beyond event's day. It's set when a mark is added.
  26     /// </summary>
  27     public enum CalendarMarkRepeatType
  28     {
  29         /// <summary>
  30         /// Default value. Marks will be displayed only on event day.
  31         /// </summary>
  32         Unique,
  33
  34         /// <summary>
  35         /// Marks will be displayed every day after event day.
  36         /// </summary>
  37         Daily,
  38
  39         /// <summary>
  40         /// Marks will be displayed every week after event day.
  41         /// </summary>
  42         Weekly,
  43
  44         /// <summary>
  45         /// Marks will be displayed every month day that coincides to event day.
  46         /// </summary>
  47         Monthly,
  48
  49         /// <summary>
  50         /// Marks will be displayed every year that coincides to event day.
  51         /// </summary>
  52         Annually,
  53
  54         /// <summary>
  55         /// Marks will be displayed every last day of month after event day.
  56         /// </summary>
  57         LastDayOfMonth
  58     }
  59
  60     /// <summary>
  61     /// Enumeration for the mode, which determine how user could select a day.
  62     /// </summary>
  63     public enum CalendarSelectMode
  64     {
  65         /// <summary>
  66         /// Default value. a day is always selected.
  67         /// </summary>
  68         Default,
  69
  70         /// <summary>
  71         /// A day is always selected.
  72         /// </summary>
  73         Always,
  74
  75         /// <summary>
  76         /// None of the days can be selected.
  77         /// </summary>
  78         None,
  79
  80         /// <summary>
  81         /// User may have selected a day or not.
  82         /// </summary>
  83         OnDemand
  84     }
  85
  86     /// <summary>
  87     /// Enumeration used to define which fields of a tm struct will be taken into account
  88     /// </summary>
  89     [Flags]
  90     public enum CalendarSelectable
  91     {
  92         /// <summary>
  93         /// None will be taken into account
  94         /// </summary>
  95         None = 0,
  96         /// <summary>
  97         /// Year will be taken into account
  98         /// </summary>
  99         Year = 1 << 0,
 100         /// <summary>
 101         /// Month will be taken into account
 102         /// </summary>
 103         Month = 1 << 1,
 104         /// <summary>
 105         /// Day will be taken into account
 106         /// </summary>
 107         Day = 1 << 2
 108     }
 109
 110     /// <summary>
 111     /// The CalendarMark is a Item for marking a Calendar's type,date and repeat type.
 112     /// </summary>
 113     public class CalendarMark
 114     {
 115         internal IntPtr Handle;
 116
 117         /// <summary>
 118         /// A string used to define the type of mark.
 119         /// </summary>
 120         public string Type;
 121
 122         /// <summary>
 123         /// A time struct to represent the date of inclusion of the mark.
 124         /// </summary>
 125         public DateTime Date;
 126
 127         /// <summary>
 128         /// Repeat the event following this periodicity.
 129         /// </summary>
 130         public CalendarMarkRepeatType Repeat;
 131
 132         /// <summary>
 133         /// Creates and initializes a new instance of the CalendarMark class.
 134         /// </summary>
 135         /// <param name="type">Type of mark</param>
 136         /// <param name="date">Date of inclusion of the mark</param>
 137         /// <param name="repeat">Repeat type</param>
 138         public CalendarMark(string type, DateTime date, CalendarMarkRepeatType repeat)
 139         {
 140             Handle = IntPtr.Zero;
 141             Type = type;
 142             Date = date;
 143             Repeat = repeat;
 144         }
 145     }
 146
 147     /// <summary>
 148     /// The Calendar is a widget that helps applications to flexibly display a calender with day of the week, date, year and month.
 149     /// </summary>
 150     public class Calendar : Layout
 151     {
 152         SmartEvent _changed;
 153         DateTime _cacheSelectedDate;
 154         SmartEvent _displayedMonthChanged;
 155         int _cacheDisplayedMonth;
 156
 157         Interop.Elementary.Elm_Calendar_Format_Cb _calendarFormat;
 158         DateFormatDelegate _dateFormatDelegate = null;
 159
 160         /// <summary>
 161         /// Creates and initializes a new instance of the Calendar class.
 162         /// </summary>
 163         /// <param name="parent">
 164         /// The EvasObject to which the new Calendar will be attached as a child.
 165         /// </param>
 166         public Calendar(EvasObject parent) : base(parent)
 167         {
 168             _changed = new SmartEvent(this, this.RealHandle, "changed");
 169             _changed.On += (sender, e) =>
 170             {
 171                 DateTime selectedDate = SelectedDate;
 172                 DateChanged?.Invoke(this, new DateChangedEventArgs(_cacheSelectedDate, selectedDate));
 173                 _cacheSelectedDate = selectedDate;
 174             };
 175
 176             _displayedMonthChanged = new SmartEvent(this, this.RealHandle, "display,changed");
 177             _displayedMonthChanged.On += (sender, e) =>
 178             {
 179                 int currentDisplayedMonth = DisplayedTime.Month;
 180                 DisplayedMonthChanged?.Invoke(this, new DisplayedMonthChangedEventArgs(_cacheDisplayedMonth, currentDisplayedMonth));
 181                 _cacheDisplayedMonth = currentDisplayedMonth;
 182             };
 183
 184             _calendarFormat = (t) => { return _dateFormatDelegate(t); };
 185         }
 186
 187         /// <summary>
 188         /// DateChanged will be triggered when the date in the calendar is changed.
 189         /// </summary>
 190         public event EventHandler<DateChangedEventArgs> DateChanged;
 191
 192         /// <summary>
 193         /// DisplayedMonthChanged will be triggered when the current month displayed in the calendar is changed.
 194         /// </summary>
 195         public event EventHandler<DisplayedMonthChangedEventArgs> DisplayedMonthChanged;
 196
 197         /// <summary>
 198         /// This delegate type is used to format the string that will be used to display month and year.
 199         /// </summary>
 200         /// <param name="time">DateTime</param>
 201         /// <returns></returns>
 202         public delegate string DateFormatDelegate(DateTime time);
 203
 204         /// <summary>
 205         /// Sets or gets the minimum for year.
 206         /// </summary>
 207         public int MinimumYear
 208         {
 209             get
 210             {
 211                 int minimumYear;
 212                 int unused;
 213                 Interop.Elementary.elm_calendar_min_max_year_get(RealHandle, out minimumYear, out unused);
 214                 return minimumYear;
 215             }
 216             set
 217             {
 218                 int maximumYear;
 219                 int unused;
 220                 Interop.Elementary.elm_calendar_min_max_year_get(RealHandle, out unused, out maximumYear);
 221                 if (maximumYear < 1902)
 222                 {
 223                     maximumYear = DateTime.MaxValue.Year;
 224                 }
 225                 Interop.Elementary.elm_calendar_min_max_year_set(RealHandle, value, maximumYear);
 226             }
 227         }
 228
 229         /// <summary>
 230         /// Sets or gets the maximum for the year.
 231         /// </summary>
 232         public int MaximumYear
 233         {
 234             get
 235             {
 236                 int maximumYear;
 237                 int unused;
 238                 Interop.Elementary.elm_calendar_min_max_year_get(RealHandle, out unused, out maximumYear);
 239                 return maximumYear;
 240             }
 241             set
 242             {
 243                 int minimumYear;
 244                 int unused;
 245                 Interop.Elementary.elm_calendar_min_max_year_get(RealHandle, out minimumYear, out unused);
 246                 Interop.Elementary.elm_calendar_min_max_year_set(RealHandle, minimumYear, value);
 247             }
 248         }
 249
 250         /// <summary>
 251         /// Sets or gets the first day of week, who are used on Calendar.
 252         /// </summary>
 253         public DateTime DisplayedTime
 254         {
 255             get
 256             {
 257                 var tm = new Interop.Libc.SystemTime();
 258                 Interop.Elementary.elm_calendar_displayed_time_get(RealHandle, out tm);
 259                 // TODO
 260                 // If the defect is fixed, it will be removed.
 261                 var daysInMonth = DateTime.DaysInMonth(tm.tm_year + 1900, tm.tm_mon + 1);
 262                 var day = tm.tm_mday;
 263
 264                 if (day > daysInMonth)
 265                 {
 266                     day = daysInMonth;
 267                 }
 268
 269                 DateTime date = new DateTime(tm.tm_year + 1900, tm.tm_mon + 1, day, tm.tm_hour, tm.tm_min, tm.tm_sec);
 270
 271                 return date;
 272             }
 273         }
 274
 275         /// <summary>
 276         /// Sets or gets the first day of week, who are used on Calendar.
 277         /// </summary>
 278         public DayOfWeek FirstDayOfWeek
 279         {
 280             get
 281             {
 282                 return (DayOfWeek)Interop.Elementary.elm_calendar_first_day_of_week_get(RealHandle);
 283             }
 284             set
 285             {
 286                 Interop.Elementary.elm_calendar_first_day_of_week_set(RealHandle, (int)value);
 287             }
 288         }
 289
 290         /// <summary>
 291         /// Sets or gets the weekdays names to be displayed by the Calendar.
 292         /// </summary>
 293         /// <remarks>
 294         /// The usage should be like this;
 295         /// <![CDATA[List<string> weekDayNames = new List<string>() { "S", "M", "T", "W", "T", "F", "S" };]]>
 296         /// Calendar.WeekDayNames = weekDayNames;
 297         /// </remarks>
 298         public IReadOnlyList<string> WeekDayNames
 299         {
 300             get
 301             {
 302                 IntPtr stringArrayPtr = Interop.Elementary.elm_calendar_weekdays_names_get(RealHandle);
 303                 string[] stringArray;
 304                 IntPtrToStringArray(stringArrayPtr, 7, out stringArray);
 305                 return stringArray;
 306             }
 307             set
 308             {
 309                 if (value != null && value.Count == 7)
 310                 {
 311                     Interop.Elementary.elm_calendar_weekdays_names_set(RealHandle, value.ToArray());
 312                 }
 313             }
 314         }
 315
 316         /// <summary>
 317         /// Sets or gets the selected date.
 318         /// </summary>
 319         /// <remarks>
 320         /// Selected date changes when the user goes to next/previous month or select a day pressing over it on calendar.
 321         /// </remarks>
 322         public DateTime SelectedDate
 323         {
 324             get
 325             {
 326                 var tm = new Interop.Libc.SystemTime();
 327                 Interop.Elementary.elm_calendar_selected_time_get(RealHandle, ref tm);
 328                 if (tm.tm_year == 0 && tm.tm_mon == 0 && tm.tm_mday == 0)
 329                 {
 330                     return DateTime.Now;
 331                 }
 332                 return tm;
 333             }
 334             set
 335             {
 336                 Interop.Libc.SystemTime tm = value;
 337                 Interop.Elementary.elm_calendar_selected_time_set(RealHandle, ref tm);
 338                 _cacheSelectedDate = value;
 339             }
 340         }
 341
 342         /// <summary>
 343         /// Sets or gets the interval on time updates for an user mouse button
 344         /// hold on calendar widgets' month/year selection.
 345         /// </summary>
 346         public double Interval
 347         {
 348             get
 349             {
 350                 return Interop.Elementary.elm_calendar_interval_get(RealHandle);
 351             }
 352             set
 353             {
 354                 Interop.Elementary.elm_calendar_interval_set(RealHandle, value);
 355             }
 356         }
 357
 358         /// <summary>
 359         /// Gets or sets the select day mode used.
 360         /// </summary>
 361         public CalendarSelectMode SelectMode
 362         {
 363             get
 364             {
 365                 return (CalendarSelectMode)Interop.Elementary.elm_calendar_select_mode_get(RealHandle);
 366             }
 367             set
 368             {
 369                 Interop.Elementary.elm_calendar_select_mode_set(RealHandle, (Interop.Elementary.Elm_Calendar_Select_Mode)value);
 370             }
 371         }
 372
 373         /// <summary>
 374         /// Gets or sets fields of a datetime will be taken into account, when SelectedDate set is invoked.
 375         /// </summary>
 376         public CalendarSelectable Selectable
 377         {
 378             get
 379             {
 380                 return (CalendarSelectable)Interop.Elementary.elm_calendar_selectable_get(RealHandle);
 381             }
 382             set
 383             {
 384                 Interop.Elementary.elm_calendar_selectable_set(RealHandle, (int)value);
 385             }
 386         }
 387
 388         /// <summary>
 389         /// Gets or sets date format the string that will be used to display month and year.
 390         /// </summary>
 391         public DateFormatDelegate DateFormat
 392         {
 393             get
 394             {
 395                 return _dateFormatDelegate;
 396             }
 397             set
 398             {
 399                 _dateFormatDelegate = value;
 400                 if (value != null)
 401                 {
 402                     Interop.Elementary.elm_calendar_format_function_set(RealHandle, _calendarFormat);
 403                 }
 404                 else
 405                 {
 406                     Interop.Elementary.elm_calendar_format_function_set(RealHandle, null);
 407                 }
 408             }
 409         }
 410
 411         /// <summary>
 412         /// Add a new mark to the calendar.
 413         /// </summary>
 414         /// <param name="type">A string used to define the type of mark. It will be emitted to the theme, that should display a related modification on these days representation.</param>
 415         /// <param name="date">A time struct to represent the date of inclusion of the mark. For marks that repeats it will just be displayed after the inclusion date in the calendar.</param>
 416         /// <param name="repeat">Repeat the event following this periodicity. Can be a unique mark (that don't repeat), daily, weekly, monthly or annually.</param>
 417         /// <returns>Item for a calendar mark.</returns>
 418         public CalendarMark AddMark(string type, DateTime date, CalendarMarkRepeatType repeat)
 419         {
 420             CalendarMark mark = new CalendarMark(type, date, repeat);
 421             Interop.Libc.SystemTime tm = date;
 422             IntPtr nativeHandle = Interop.Elementary.elm_calendar_mark_add(RealHandle, type, ref tm, (Interop.Elementary.Elm_Calendar_Mark_Repeat_Type)repeat);
 423             mark.Handle = nativeHandle;
 424
 425             return mark;
 426         }
 427
 428         /// <summary>
 429         /// Delete mark from the calendar.
 430         /// </summary>
 431         /// <param name="mark">Item for a calendar mark</param>
 432         public void DeleteMark(CalendarMark mark)
 433         {
 434             Interop.Elementary.elm_calendar_mark_del(mark.Handle);
 435         }
 436
 437         /// <summary>
 438         /// Draw calendar marks.
 439         /// </summary>
 440         public void DrawMarks()
 441         {
 442             Interop.Elementary.elm_calendar_marks_draw(RealHandle);
 443         }
 444
 445         /// <summary>
 446         /// Remove all calendar's marks.
 447         /// </summary>
 448         public void ClearMarks()
 449         {
 450             Interop.Elementary.elm_calendar_marks_clear(RealHandle);
 451         }
 452
 453         /// <summary>
 454         /// Creates a widget handle.
 455         /// </summary>
 456         /// <param name="parent">Parent EvasObject</param>
 457         /// <returns>Handle IntPtr</returns>
 458         protected override IntPtr CreateHandle(EvasObject parent)
 459         {
 460             IntPtr handle = Interop.Elementary.elm_layout_add(parent.Handle);
 461             Interop.Elementary.elm_layout_theme_set(handle, "layout", "elm_widget", "default");
 462
 463             RealHandle = Interop.Elementary.elm_calendar_add(handle);
 464             Interop.Elementary.elm_object_part_content_set(handle, "elm.swallow.content", RealHandle);
 465
 466             return handle;
 467         }
 468
 469         static void IntPtrToStringArray(IntPtr unmanagedArray, int size, out string[] managedArray)
 470         {
 471             managedArray = new string[size];
 472             IntPtr[] IntPtrArray = new IntPtr[size];
 473
 474             Marshal.Copy(unmanagedArray, IntPtrArray, 0, size);
 475
 476             for (int iterator = 0; iterator < size; iterator++)
 477             {
 478                 managedArray[iterator] = Marshal.PtrToStringAnsi(IntPtrArray[iterator]);
 479             }
 480         }
 481     }
 482 }