| 1 | /* |
| 2 | * Jexer - Java Text User Interface |
| 3 | * |
| 4 | * The MIT License (MIT) |
| 5 | * |
| 6 | * Copyright (C) 2017 Kevin Lamonte |
| 7 | * |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 9 | * copy of this software and associated documentation files (the "Software"), |
| 10 | * to deal in the Software without restriction, including without limitation |
| 11 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 12 | * and/or sell copies of the Software, and to permit persons to whom the |
| 13 | * Software is furnished to do so, subject to the following conditions: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 24 | * DEALINGS IN THE SOFTWARE. |
| 25 | * |
| 26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] |
| 27 | * @version 1 |
| 28 | */ |
| 29 | package jexer; |
| 30 | |
| 31 | import java.util.Calendar; |
| 32 | import java.util.GregorianCalendar; |
| 33 | |
| 34 | import jexer.bits.CellAttributes; |
| 35 | import jexer.bits.GraphicsChars; |
| 36 | import jexer.event.TKeypressEvent; |
| 37 | import jexer.event.TMouseEvent; |
| 38 | import static jexer.TKeypress.*; |
| 39 | |
| 40 | /** |
| 41 | * TCalendar is a date picker widget. |
| 42 | */ |
| 43 | public class TCalendar extends TWidget { |
| 44 | |
| 45 | // ------------------------------------------------------------------------ |
| 46 | // Variables -------------------------------------------------------------- |
| 47 | // ------------------------------------------------------------------------ |
| 48 | |
| 49 | /** |
| 50 | * The calendar being displayed. |
| 51 | */ |
| 52 | private GregorianCalendar displayCalendar = new GregorianCalendar(); |
| 53 | |
| 54 | /** |
| 55 | * The calendar with the selected day. |
| 56 | */ |
| 57 | private GregorianCalendar calendar = new GregorianCalendar(); |
| 58 | |
| 59 | /** |
| 60 | * The action to perform when the user changes the value of the calendar. |
| 61 | */ |
| 62 | private TAction updateAction = null; |
| 63 | |
| 64 | // ------------------------------------------------------------------------ |
| 65 | // Constructors ----------------------------------------------------------- |
| 66 | // ------------------------------------------------------------------------ |
| 67 | |
| 68 | /** |
| 69 | * Public constructor. |
| 70 | * |
| 71 | * @param parent parent widget |
| 72 | * @param x column relative to parent |
| 73 | * @param y row relative to parent |
| 74 | * @param updateAction action to call when the user changes the value of |
| 75 | * the calendar |
| 76 | */ |
| 77 | public TCalendar(final TWidget parent, final int x, final int y, |
| 78 | final TAction updateAction) { |
| 79 | |
| 80 | // Set parent and window |
| 81 | super(parent, x, y, 28, 8); |
| 82 | |
| 83 | this.updateAction = updateAction; |
| 84 | } |
| 85 | |
| 86 | // ------------------------------------------------------------------------ |
| 87 | // Event handlers --------------------------------------------------------- |
| 88 | // ------------------------------------------------------------------------ |
| 89 | |
| 90 | /** |
| 91 | * Returns true if the mouse is currently on the left arrow. |
| 92 | * |
| 93 | * @param mouse mouse event |
| 94 | * @return true if the mouse is currently on the left arrow |
| 95 | */ |
| 96 | private boolean mouseOnLeftArrow(final TMouseEvent mouse) { |
| 97 | if ((mouse.getY() == 0) |
| 98 | && (mouse.getX() == 1) |
| 99 | ) { |
| 100 | return true; |
| 101 | } |
| 102 | return false; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Returns true if the mouse is currently on the right arrow. |
| 107 | * |
| 108 | * @param mouse mouse event |
| 109 | * @return true if the mouse is currently on the right arrow |
| 110 | */ |
| 111 | private boolean mouseOnRightArrow(final TMouseEvent mouse) { |
| 112 | if ((mouse.getY() == 0) |
| 113 | && (mouse.getX() == getWidth() - 2) |
| 114 | ) { |
| 115 | return true; |
| 116 | } |
| 117 | return false; |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Handle mouse down clicks. |
| 122 | * |
| 123 | * @param mouse mouse button down event |
| 124 | */ |
| 125 | @Override |
| 126 | public void onMouseDown(final TMouseEvent mouse) { |
| 127 | if ((mouseOnLeftArrow(mouse)) && (mouse.isMouse1())) { |
| 128 | displayCalendar.add(Calendar.MONTH, -1); |
| 129 | } else if ((mouseOnRightArrow(mouse)) && (mouse.isMouse1())) { |
| 130 | displayCalendar.add(Calendar.MONTH, 1); |
| 131 | } else if (mouse.isMouse1()) { |
| 132 | // Find the day this might correspond to, and set it. |
| 133 | int index = (mouse.getY() - 2) * 7 + (mouse.getX() / 4) + 1; |
| 134 | // System.err.println("index: " + index); |
| 135 | |
| 136 | int lastDayNumber = displayCalendar.getActualMaximum( |
| 137 | Calendar.DAY_OF_MONTH); |
| 138 | GregorianCalendar firstOfMonth = new GregorianCalendar(); |
| 139 | firstOfMonth.setTimeInMillis(displayCalendar.getTimeInMillis()); |
| 140 | firstOfMonth.set(Calendar.DAY_OF_MONTH, 1); |
| 141 | int dayOf1st = firstOfMonth.get(Calendar.DAY_OF_WEEK) - 1; |
| 142 | // System.err.println("dayOf1st: " + dayOf1st); |
| 143 | |
| 144 | int day = index - dayOf1st; |
| 145 | // System.err.println("day: " + day); |
| 146 | |
| 147 | if ((day < 1) || (day > lastDayNumber)) { |
| 148 | return; |
| 149 | } |
| 150 | calendar.setTimeInMillis(displayCalendar.getTimeInMillis()); |
| 151 | calendar.set(Calendar.DAY_OF_MONTH, day); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Handle mouse double click. |
| 157 | * |
| 158 | * @param mouse mouse double click event |
| 159 | */ |
| 160 | @Override |
| 161 | public void onMouseDoubleClick(final TMouseEvent mouse) { |
| 162 | if (updateAction != null) { |
| 163 | updateAction.DO(); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Handle keystrokes. |
| 169 | * |
| 170 | * @param keypress keystroke event |
| 171 | */ |
| 172 | @Override |
| 173 | public void onKeypress(final TKeypressEvent keypress) { |
| 174 | int increment = 0; |
| 175 | |
| 176 | if (keypress.equals(kbUp)) { |
| 177 | increment = -7; |
| 178 | } else if (keypress.equals(kbDown)) { |
| 179 | increment = 7; |
| 180 | } else if (keypress.equals(kbLeft)) { |
| 181 | increment = -1; |
| 182 | } else if (keypress.equals(kbRight)) { |
| 183 | increment = 1; |
| 184 | } else if (keypress.equals(kbEnter)) { |
| 185 | if (updateAction != null) { |
| 186 | updateAction.DO(); |
| 187 | } |
| 188 | return; |
| 189 | } else { |
| 190 | // Pass to parent for the things we don't care about. |
| 191 | super.onKeypress(keypress); |
| 192 | return; |
| 193 | } |
| 194 | |
| 195 | if (increment != 0) { |
| 196 | calendar.add(Calendar.DAY_OF_YEAR, increment); |
| 197 | |
| 198 | if ((displayCalendar.get(Calendar.MONTH) != calendar.get( |
| 199 | Calendar.MONTH)) |
| 200 | || (displayCalendar.get(Calendar.YEAR) != calendar.get( |
| 201 | Calendar.YEAR)) |
| 202 | ) { |
| 203 | if (increment < 0) { |
| 204 | displayCalendar.add(Calendar.MONTH, -1); |
| 205 | } else { |
| 206 | displayCalendar.add(Calendar.MONTH, 1); |
| 207 | } |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | } |
| 212 | |
| 213 | // ------------------------------------------------------------------------ |
| 214 | // TWidget ---------------------------------------------------------------- |
| 215 | // ------------------------------------------------------------------------ |
| 216 | |
| 217 | /** |
| 218 | * Draw the combobox down arrow. |
| 219 | */ |
| 220 | @Override |
| 221 | public void draw() { |
| 222 | CellAttributes backgroundColor = getTheme().getColor( |
| 223 | "tcalendar.background"); |
| 224 | CellAttributes dayColor = getTheme().getColor( |
| 225 | "tcalendar.day"); |
| 226 | CellAttributes selectedDayColor = getTheme().getColor( |
| 227 | "tcalendar.day.selected"); |
| 228 | CellAttributes arrowColor = getTheme().getColor( |
| 229 | "tcalendar.arrow"); |
| 230 | CellAttributes titleColor = getTheme().getColor( |
| 231 | "tcalendar.title"); |
| 232 | |
| 233 | // Fill in the interior background |
| 234 | for (int i = 0; i < getHeight(); i++) { |
| 235 | getScreen().hLineXY(0, i, getWidth(), ' ', backgroundColor); |
| 236 | } |
| 237 | |
| 238 | // Draw the title |
| 239 | String title = String.format("%tB %tY", displayCalendar, |
| 240 | displayCalendar); |
| 241 | int titleLeft = (getWidth() - title.length() - 2) / 2; |
| 242 | getScreen().putCharXY(titleLeft, 0, ' ', titleColor); |
| 243 | getScreen().putStringXY(titleLeft + 1, 0, title, titleColor); |
| 244 | getScreen().putCharXY(titleLeft + title.length() + 1, 0, ' ', |
| 245 | titleColor); |
| 246 | |
| 247 | // Arrows |
| 248 | getScreen().putCharXY(1, 0, GraphicsChars.LEFTARROW, arrowColor); |
| 249 | getScreen().putCharXY(getWidth() - 2, 0, GraphicsChars.RIGHTARROW, |
| 250 | arrowColor); |
| 251 | |
| 252 | /* |
| 253 | * Now draw out the days. |
| 254 | */ |
| 255 | getScreen().putStringXY(0, 1, " S M T W T F S ", dayColor); |
| 256 | int lastDayNumber = displayCalendar.getActualMaximum( |
| 257 | Calendar.DAY_OF_MONTH); |
| 258 | GregorianCalendar firstOfMonth = new GregorianCalendar(); |
| 259 | firstOfMonth.setTimeInMillis(displayCalendar.getTimeInMillis()); |
| 260 | firstOfMonth.set(Calendar.DAY_OF_MONTH, 1); |
| 261 | int dayOf1st = firstOfMonth.get(Calendar.DAY_OF_WEEK) - 1; |
| 262 | int dayColumn = dayOf1st * 4; |
| 263 | int row = 2; |
| 264 | |
| 265 | int dayOfMonth = 1; |
| 266 | while (dayOfMonth <= lastDayNumber) { |
| 267 | if (dayColumn == 4 * 7) { |
| 268 | dayColumn = 0; |
| 269 | row++; |
| 270 | } |
| 271 | if ((dayOfMonth == calendar.get(Calendar.DAY_OF_MONTH)) |
| 272 | && (displayCalendar.get(Calendar.MONTH) == calendar.get( |
| 273 | Calendar.MONTH)) |
| 274 | && (displayCalendar.get(Calendar.YEAR) == calendar.get( |
| 275 | Calendar.YEAR)) |
| 276 | ) { |
| 277 | getScreen().putStringXY(dayColumn, row, |
| 278 | String.format(" %2d ", dayOfMonth), selectedDayColor); |
| 279 | } else { |
| 280 | getScreen().putStringXY(dayColumn, row, |
| 281 | String.format(" %2d ", dayOfMonth), dayColor); |
| 282 | } |
| 283 | dayColumn += 4; |
| 284 | dayOfMonth++; |
| 285 | } |
| 286 | |
| 287 | } |
| 288 | |
| 289 | // ------------------------------------------------------------------------ |
| 290 | // TCalendar -------------------------------------------------------------- |
| 291 | // ------------------------------------------------------------------------ |
| 292 | |
| 293 | /** |
| 294 | * Get calendar value. |
| 295 | * |
| 296 | * @return the current calendar value (clone instance) |
| 297 | */ |
| 298 | public Calendar getValue() { |
| 299 | return (Calendar) calendar.clone(); |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * Set calendar value. |
| 304 | * |
| 305 | * @param calendar the new value to use |
| 306 | */ |
| 307 | public final void setValue(final Calendar calendar) { |
| 308 | this.calendar.setTimeInMillis(calendar.getTimeInMillis()); |
| 309 | } |
| 310 | |
| 311 | /** |
| 312 | * Set calendar value. |
| 313 | * |
| 314 | * @param millis the millis to set to |
| 315 | */ |
| 316 | public final void setValue(final long millis) { |
| 317 | this.calendar.setTimeInMillis(millis); |
| 318 | } |
| 319 | |
| 320 | } |