| 1 | /** |
| 2 | * Jexer - Java Text User Interface |
| 3 | * |
| 4 | * License: LGPLv3 or later |
| 5 | * |
| 6 | * This module is licensed under the GNU Lesser General Public License |
| 7 | * Version 3. Please see the file "COPYING" in this directory for more |
| 8 | * information about the GNU Lesser General Public License Version 3. |
| 9 | * |
| 10 | * Copyright (C) 2015 Kevin Lamonte |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU Lesser General Public License |
| 14 | * as published by the Free Software Foundation; either version 3 of |
| 15 | * the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, but |
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 20 | * General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU Lesser General Public |
| 23 | * License along with this program; if not, see |
| 24 | * http://www.gnu.org/licenses/, or write to the Free Software |
| 25 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 26 | * 02110-1301 USA |
| 27 | * |
| 28 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] |
| 29 | * @version 1 |
| 30 | */ |
| 31 | package jexer; |
| 32 | |
| 33 | import java.util.List; |
| 34 | import java.util.LinkedList; |
| 35 | |
| 36 | import jexer.event.TCommandEvent; |
| 37 | import jexer.event.TInputEvent; |
| 38 | import jexer.event.TKeypressEvent; |
| 39 | import jexer.event.TMenuEvent; |
| 40 | import jexer.event.TMouseEvent; |
| 41 | import jexer.event.TResizeEvent; |
| 42 | import jexer.io.Screen; |
| 43 | import static jexer.TKeypress.*; |
| 44 | |
| 45 | /** |
| 46 | * TWidget is the base class of all objects that can be drawn on screen or |
| 47 | * handle user input events. |
| 48 | */ |
| 49 | public abstract class TWidget { |
| 50 | |
| 51 | /** |
| 52 | * Every widget has a parent widget that it may be "contained" in. For |
| 53 | * example, a TWindow might contain several TTextFields, or a TComboBox |
| 54 | * may contain a TScrollBar. |
| 55 | */ |
| 56 | protected TWidget parent = null; |
| 57 | |
| 58 | /** |
| 59 | * Child widgets that this widget contains. |
| 60 | */ |
| 61 | private List<TWidget> children; |
| 62 | |
| 63 | /** |
| 64 | * The currently active child widget that will receive keypress events. |
| 65 | */ |
| 66 | private TWidget activeChild = null; |
| 67 | |
| 68 | /** |
| 69 | * If true, this widget will receive events. |
| 70 | */ |
| 71 | protected boolean active = false; |
| 72 | |
| 73 | /** |
| 74 | * The window that this widget draws to. |
| 75 | */ |
| 76 | protected TWindow window = null; |
| 77 | |
| 78 | /** |
| 79 | * Absolute X position of the top-left corner. |
| 80 | */ |
| 81 | protected int x = 0; |
| 82 | |
| 83 | /** |
| 84 | * Absolute Y position of the top-left corner. |
| 85 | */ |
| 86 | protected int y = 0; |
| 87 | |
| 88 | /** |
| 89 | * Width. |
| 90 | */ |
| 91 | protected int width = 0; |
| 92 | |
| 93 | /** |
| 94 | * Height. |
| 95 | */ |
| 96 | protected int height = 0; |
| 97 | |
| 98 | /** |
| 99 | * My tab order inside a window or containing widget. |
| 100 | */ |
| 101 | private int tabOrder = 0; |
| 102 | |
| 103 | /** |
| 104 | * If true, this widget can be tabbed to or receive events. |
| 105 | */ |
| 106 | private boolean enabled = true; |
| 107 | |
| 108 | /** |
| 109 | * Get enabled flag. |
| 110 | * |
| 111 | * @return if true, this widget can be tabbed to or receive events |
| 112 | */ |
| 113 | public final boolean getEnabled() { |
| 114 | return enabled; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Set enabled flag. |
| 119 | * |
| 120 | * @param enabled if true, this widget can be tabbed to or receive events |
| 121 | */ |
| 122 | public final void setEnabled(final boolean enabled) { |
| 123 | this.enabled = enabled; |
| 124 | /* |
| 125 | |
| 126 | // TODO: get this working after scrollers are going again |
| 127 | |
| 128 | if (enabled == false) { |
| 129 | active = false; |
| 130 | // See if there are any active siblings to switch to |
| 131 | boolean foundSibling = false; |
| 132 | if (parent !is null) { |
| 133 | foreach (w; parent.children) { |
| 134 | if ((w.enabled) && |
| 135 | (!cast(THScroller)this) && |
| 136 | (!cast(TVScroller)this) |
| 137 | ) { |
| 138 | parent.activate(w); |
| 139 | foundSibling = true; |
| 140 | break; |
| 141 | } |
| 142 | } |
| 143 | if (!foundSibling) { |
| 144 | parent.activeChild = null; |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | */ |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * If true, this widget has a cursor. |
| 153 | */ |
| 154 | private boolean hasCursor = false; |
| 155 | |
| 156 | /** |
| 157 | * See if this widget has a visible cursor. |
| 158 | * |
| 159 | * @return if true, this widget has a visible cursor |
| 160 | */ |
| 161 | public final boolean visibleCursor() { |
| 162 | return hasCursor; |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Cursor column position in relative coordinates. |
| 167 | */ |
| 168 | private int cursorX = 0; |
| 169 | |
| 170 | /** |
| 171 | * Cursor row position in relative coordinates. |
| 172 | */ |
| 173 | private int cursorY = 0; |
| 174 | |
| 175 | /** |
| 176 | * Comparison operator sorts on tabOrder. |
| 177 | * |
| 178 | * @param that another TWidget instance |
| 179 | * @return difference between this.tabOrder and that.tabOrder |
| 180 | */ |
| 181 | public final int compare(final TWidget that) { |
| 182 | return (this.tabOrder - that.tabOrder); |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * See if this widget should render with the active color. |
| 187 | * |
| 188 | * @return true if this widget is active and all of its parents are |
| 189 | * active. |
| 190 | */ |
| 191 | public final boolean getAbsoluteActive() { |
| 192 | if (parent == this) { |
| 193 | return active; |
| 194 | } |
| 195 | return (active && parent.getAbsoluteActive()); |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Returns the cursor X position. |
| 200 | * |
| 201 | * @return absolute screen column number for the cursor's X position |
| 202 | */ |
| 203 | public final int getCursorAbsoluteX() { |
| 204 | assert (hasCursor); |
| 205 | return getAbsoluteX() + cursorX; |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Returns the cursor Y position. |
| 210 | * |
| 211 | * @return absolute screen row number for the cursor's Y position |
| 212 | */ |
| 213 | public final int getCursorAbsoluteY() { |
| 214 | assert (hasCursor); |
| 215 | return getAbsoluteY() + cursorY; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Compute my absolute X position as the sum of my X plus all my parent's |
| 220 | * X's. |
| 221 | * |
| 222 | * @return absolute screen column number for my X position |
| 223 | */ |
| 224 | public final int getAbsoluteX() { |
| 225 | assert (parent != null); |
| 226 | if (parent == this) { |
| 227 | return x; |
| 228 | } |
| 229 | if ((parent instanceof TWindow) && !(parent instanceof TMenu)) { |
| 230 | // Widgets on a TWindow have (0,0) as their top-left, but this is |
| 231 | // actually the TWindow's (1,1). |
| 232 | return parent.getAbsoluteX() + x + 1; |
| 233 | } |
| 234 | return parent.getAbsoluteX() + x; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Compute my absolute Y position as the sum of my Y plus all my parent's |
| 239 | * Y's. |
| 240 | * |
| 241 | * @return absolute screen row number for my Y position |
| 242 | */ |
| 243 | public final int getAbsoluteY() { |
| 244 | assert (parent != null); |
| 245 | if (parent == this) { |
| 246 | return y; |
| 247 | } |
| 248 | if ((parent instanceof TWindow) && !(parent instanceof TMenu)) { |
| 249 | // Widgets on a TWindow have (0,0) as their top-left, but this is |
| 250 | // actually the TWindow's (1,1). |
| 251 | return parent.getAbsoluteY() + y + 1; |
| 252 | } |
| 253 | return parent.getAbsoluteY() + y; |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * Draw my specific widget. When called, the screen rectangle I draw |
| 258 | * into is already setup (offset and clipping). |
| 259 | */ |
| 260 | public void draw() { |
| 261 | // Default widget draws nothing. |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * Called by parent to render to TWindow. |
| 266 | */ |
| 267 | public final void drawChildren() { |
| 268 | // Set my clipping rectangle |
| 269 | assert (window != null); |
| 270 | assert (window.getScreen() != null); |
| 271 | Screen screen = window.getScreen(); |
| 272 | |
| 273 | screen.setClipRight(width); |
| 274 | screen.setClipBottom(height); |
| 275 | |
| 276 | int absoluteRightEdge = window.getAbsoluteX() + screen.getWidth(); |
| 277 | int absoluteBottomEdge = window.getAbsoluteY() + screen.getHeight(); |
| 278 | if (!(this instanceof TWindow) && !(this instanceof TVScroller)) { |
| 279 | absoluteRightEdge -= 1; |
| 280 | } |
| 281 | if (!(this instanceof TWindow) && !(this instanceof THScroller)) { |
| 282 | absoluteBottomEdge -= 1; |
| 283 | } |
| 284 | int myRightEdge = getAbsoluteX() + width; |
| 285 | int myBottomEdge = getAbsoluteY() + height; |
| 286 | if (getAbsoluteX() > absoluteRightEdge) { |
| 287 | // I am offscreen |
| 288 | screen.setClipRight(0); |
| 289 | } else if (myRightEdge > absoluteRightEdge) { |
| 290 | screen.setClipRight(screen.getClipRight() |
| 291 | - myRightEdge - absoluteRightEdge); |
| 292 | } |
| 293 | if (getAbsoluteY() > absoluteBottomEdge) { |
| 294 | // I am offscreen |
| 295 | screen.setClipBottom(0); |
| 296 | } else if (myBottomEdge > absoluteBottomEdge) { |
| 297 | screen.setClipBottom(screen.getClipBottom() |
| 298 | - myBottomEdge - absoluteBottomEdge); |
| 299 | } |
| 300 | |
| 301 | // Set my offset |
| 302 | screen.setOffsetX(getAbsoluteX()); |
| 303 | screen.setOffsetY(getAbsoluteY()); |
| 304 | |
| 305 | // Draw me |
| 306 | draw(); |
| 307 | |
| 308 | // Continue down the chain |
| 309 | for (TWidget widget: children) { |
| 310 | widget.drawChildren(); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Subclasses need this constructor to setup children. |
| 316 | */ |
| 317 | protected TWidget() { |
| 318 | children = new LinkedList<TWidget>(); |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * Protected constructor. |
| 323 | * |
| 324 | * @param parent parent widget |
| 325 | */ |
| 326 | protected TWidget(final TWidget parent) { |
| 327 | this.parent = parent; |
| 328 | this.window = parent.window; |
| 329 | |
| 330 | parent.addChild(this); |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Add a child widget to my list of children. We set its tabOrder to 0 |
| 335 | * and increment the tabOrder of all other children. |
| 336 | * |
| 337 | * @param child TWidget to add |
| 338 | */ |
| 339 | private void addChild(final TWidget child) { |
| 340 | children.add(child); |
| 341 | |
| 342 | if ((child.enabled) |
| 343 | && !(child instanceof THScroller) |
| 344 | && !(child instanceof TVScroller) |
| 345 | ) { |
| 346 | for (TWidget widget: children) { |
| 347 | widget.active = false; |
| 348 | } |
| 349 | child.active = true; |
| 350 | activeChild = child; |
| 351 | } |
| 352 | for (int i = 0; i < children.size(); i++) { |
| 353 | children.get(i).tabOrder = i; |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | /** |
| 358 | * Switch the active child. |
| 359 | * |
| 360 | * @param child TWidget to activate |
| 361 | */ |
| 362 | public final void activate(final TWidget child) { |
| 363 | assert (child.enabled); |
| 364 | if ((child instanceof THScroller) |
| 365 | || (child instanceof TVScroller) |
| 366 | ) { |
| 367 | return; |
| 368 | } |
| 369 | |
| 370 | if (child != activeChild) { |
| 371 | if (activeChild != null) { |
| 372 | activeChild.active = false; |
| 373 | } |
| 374 | child.active = true; |
| 375 | activeChild = child; |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * Switch the active child. |
| 381 | * |
| 382 | * @param tabOrder tabOrder of the child to activate. If that child |
| 383 | * isn't enabled, then the next enabled child will be activated. |
| 384 | */ |
| 385 | public final void activate(final int tabOrder) { |
| 386 | if (activeChild == null) { |
| 387 | return; |
| 388 | } |
| 389 | TWidget child = null; |
| 390 | for (TWidget widget: children) { |
| 391 | if ((widget.enabled) |
| 392 | && !(widget instanceof THScroller) |
| 393 | && !(widget instanceof TVScroller) |
| 394 | && (widget.tabOrder >= tabOrder) |
| 395 | ) { |
| 396 | child = widget; |
| 397 | break; |
| 398 | } |
| 399 | } |
| 400 | if ((child != null) && (child != activeChild)) { |
| 401 | activeChild.active = false; |
| 402 | assert (child.enabled); |
| 403 | child.active = true; |
| 404 | activeChild = child; |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | /** |
| 409 | * Switch the active widget with the next in the tab order. |
| 410 | * |
| 411 | * @param forward if true, then switch to the next enabled widget in the |
| 412 | * list, otherwise switch to the previous enabled widget in the list |
| 413 | */ |
| 414 | public final void switchWidget(final boolean forward) { |
| 415 | |
| 416 | // Only switch if there are multiple enabled widgets |
| 417 | if ((children.size() < 2) || (activeChild == null)) { |
| 418 | return; |
| 419 | } |
| 420 | |
| 421 | int tabOrder = activeChild.tabOrder; |
| 422 | do { |
| 423 | if (forward) { |
| 424 | tabOrder++; |
| 425 | } else { |
| 426 | tabOrder--; |
| 427 | } |
| 428 | if (tabOrder < 0) { |
| 429 | |
| 430 | // If at the end, pass the switch to my parent. |
| 431 | if ((!forward) && (parent != this)) { |
| 432 | parent.switchWidget(forward); |
| 433 | return; |
| 434 | } |
| 435 | |
| 436 | tabOrder = children.size() - 1; |
| 437 | } else if (tabOrder == children.size()) { |
| 438 | // If at the end, pass the switch to my parent. |
| 439 | if ((forward) && (parent != this)) { |
| 440 | parent.switchWidget(forward); |
| 441 | return; |
| 442 | } |
| 443 | |
| 444 | tabOrder = 0; |
| 445 | } |
| 446 | if (activeChild.tabOrder == tabOrder) { |
| 447 | // We wrapped around |
| 448 | break; |
| 449 | } |
| 450 | } while ((!children.get(tabOrder).enabled) |
| 451 | && !(children.get(tabOrder) instanceof THScroller) |
| 452 | && !(children.get(tabOrder) instanceof TVScroller)); |
| 453 | |
| 454 | assert (children.get(tabOrder).enabled); |
| 455 | |
| 456 | activeChild.active = false; |
| 457 | children.get(tabOrder).active = true; |
| 458 | activeChild = children.get(tabOrder); |
| 459 | |
| 460 | // Refresh |
| 461 | window.getApplication().setRepaint(); |
| 462 | } |
| 463 | |
| 464 | /** |
| 465 | * Returns my active widget. |
| 466 | * |
| 467 | * @return widget that is active, or this if no children |
| 468 | */ |
| 469 | public final TWidget getActiveChild() { |
| 470 | if ((this instanceof THScroller) |
| 471 | || (this instanceof TVScroller) |
| 472 | ) { |
| 473 | return parent; |
| 474 | } |
| 475 | |
| 476 | for (TWidget widget: children) { |
| 477 | if (widget.active) { |
| 478 | return widget.getActiveChild(); |
| 479 | } |
| 480 | } |
| 481 | // No active children, return me |
| 482 | return this; |
| 483 | } |
| 484 | |
| 485 | /** |
| 486 | * Method that subclasses can override to handle keystrokes. |
| 487 | * |
| 488 | * @param keypress keystroke event |
| 489 | */ |
| 490 | public void onKeypress(final TKeypressEvent keypress) { |
| 491 | |
| 492 | if ((children.size() == 0) |
| 493 | // || (cast(TTreeView)this) |
| 494 | // || (cast(TText)this) |
| 495 | ) { |
| 496 | |
| 497 | // Defaults: |
| 498 | // tab / shift-tab - switch to next/previous widget |
| 499 | // right-arrow or down-arrow: same as tab |
| 500 | // left-arrow or up-arrow: same as shift-tab |
| 501 | if ((keypress.equals(kbTab)) |
| 502 | || (keypress.equals(kbRight)) |
| 503 | || (keypress.equals(kbDown)) |
| 504 | ) { |
| 505 | parent.switchWidget(true); |
| 506 | return; |
| 507 | } else if ((keypress.equals(kbShiftTab)) |
| 508 | || (keypress.equals(kbBackTab)) |
| 509 | || (keypress.equals(kbLeft)) |
| 510 | || (keypress.equals(kbUp)) |
| 511 | ) { |
| 512 | parent.switchWidget(false); |
| 513 | return; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | // If I have any buttons on me AND this is an Alt-key that matches |
| 518 | // its mnemonic, send it an Enter keystroke |
| 519 | for (TWidget widget: children) { |
| 520 | /* |
| 521 | TODO |
| 522 | |
| 523 | if (TButton button = cast(TButton)w) { |
| 524 | if (button.enabled && |
| 525 | !keypress.key.isKey && |
| 526 | keypress.key.alt && |
| 527 | !keypress.key.ctrl && |
| 528 | (toLowercase(button.mnemonic.shortcut) == toLowercase(keypress.key.ch))) { |
| 529 | |
| 530 | w.handleEvent(new TKeypressEvent(kbEnter)); |
| 531 | return; |
| 532 | } |
| 533 | } |
| 534 | */ |
| 535 | } |
| 536 | |
| 537 | // Dispatch the keypress to an active widget |
| 538 | for (TWidget widget: children) { |
| 539 | if (widget.active) { |
| 540 | window.getApplication().setRepaint(); |
| 541 | widget.handleEvent(keypress); |
| 542 | return; |
| 543 | } |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | /** |
| 548 | * Method that subclasses can override to handle mouse button presses. |
| 549 | * |
| 550 | * @param mouse mouse button event |
| 551 | */ |
| 552 | public void onMouseDown(final TMouseEvent mouse) { |
| 553 | // Default: do nothing, pass to children instead |
| 554 | for (TWidget widget: children) { |
| 555 | if (widget.mouseWouldHit(mouse)) { |
| 556 | // Dispatch to this child, also activate it |
| 557 | activate(widget); |
| 558 | |
| 559 | // Set x and y relative to the child's coordinates |
| 560 | mouse.setX(mouse.getAbsoluteX() - widget.getAbsoluteX()); |
| 561 | mouse.setY(mouse.getAbsoluteY() - widget.getAbsoluteY()); |
| 562 | widget.handleEvent(mouse); |
| 563 | return; |
| 564 | } |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | /** |
| 569 | * Method that subclasses can override to handle mouse button releases. |
| 570 | * |
| 571 | * @param mouse mouse button event |
| 572 | */ |
| 573 | public void onMouseUp(final TMouseEvent mouse) { |
| 574 | // Default: do nothing, pass to children instead |
| 575 | for (TWidget widget: children) { |
| 576 | if (widget.mouseWouldHit(mouse)) { |
| 577 | // Dispatch to this child, also activate it |
| 578 | activate(widget); |
| 579 | |
| 580 | // Set x and y relative to the child's coordinates |
| 581 | mouse.setX(mouse.getAbsoluteX() - widget.getAbsoluteX()); |
| 582 | mouse.setY(mouse.getAbsoluteY() - widget.getAbsoluteY()); |
| 583 | widget.handleEvent(mouse); |
| 584 | return; |
| 585 | } |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | /** |
| 590 | * Method that subclasses can override to handle mouse movements. |
| 591 | * |
| 592 | * @param mouse mouse motion event |
| 593 | */ |
| 594 | public void onMouseMotion(final TMouseEvent mouse) { |
| 595 | // Default: do nothing, pass it on to ALL of my children. This way |
| 596 | // the children can see the mouse "leaving" their area. |
| 597 | for (TWidget widget: children) { |
| 598 | // Set x and y relative to the child's coordinates |
| 599 | mouse.setX(mouse.getAbsoluteX() - widget.getAbsoluteX()); |
| 600 | mouse.setY(mouse.getAbsoluteY() - widget.getAbsoluteY()); |
| 601 | widget.handleEvent(mouse); |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | /** |
| 606 | * Method that subclasses can override to handle window/screen resize |
| 607 | * events. |
| 608 | * |
| 609 | * @param resize resize event |
| 610 | */ |
| 611 | public void onResize(final TResizeEvent resize) { |
| 612 | // Default: do nothing, pass to children instead |
| 613 | for (TWidget widget: children) { |
| 614 | widget.onResize(resize); |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | /** |
| 619 | * Method that subclasses can override to handle posted command events. |
| 620 | * |
| 621 | * @param command command event |
| 622 | */ |
| 623 | public void onCommand(final TCommandEvent command) { |
| 624 | // Default: do nothing, pass to children instead |
| 625 | for (TWidget widget: children) { |
| 626 | widget.onCommand(command); |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | /** |
| 631 | * Method that subclasses can override to handle menu or posted menu |
| 632 | * events. |
| 633 | * |
| 634 | * @param menu menu event |
| 635 | */ |
| 636 | public void onMenu(final TMenuEvent menu) { |
| 637 | // Default: do nothing, pass to children instead |
| 638 | for (TWidget widget: children) { |
| 639 | widget.onMenu(menu); |
| 640 | } |
| 641 | } |
| 642 | |
| 643 | /** |
| 644 | * Method that subclasses can override to do processing when the UI is |
| 645 | * idle. |
| 646 | */ |
| 647 | public void onIdle() { |
| 648 | // Default: do nothing, pass to children instead |
| 649 | for (TWidget widget: children) { |
| 650 | widget.onIdle(); |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | /** |
| 655 | * Consume event. Subclasses that want to intercept all events in one go |
| 656 | * can override this method. |
| 657 | * |
| 658 | * @param event keyboard, mouse, resize, command, or menu event |
| 659 | */ |
| 660 | public void handleEvent(final TInputEvent event) { |
| 661 | // System.err.printf("TWidget (%s) event: %s\n", this.getClass().getName(), |
| 662 | // event); |
| 663 | |
| 664 | if (!enabled) { |
| 665 | // Discard event |
| 666 | // System.err.println(" -- discard --"); |
| 667 | return; |
| 668 | } |
| 669 | |
| 670 | if (event instanceof TKeypressEvent) { |
| 671 | onKeypress((TKeypressEvent) event); |
| 672 | } else if (event instanceof TMouseEvent) { |
| 673 | |
| 674 | TMouseEvent mouse = (TMouseEvent) event; |
| 675 | |
| 676 | switch (mouse.getType()) { |
| 677 | |
| 678 | case MOUSE_DOWN: |
| 679 | onMouseDown(mouse); |
| 680 | break; |
| 681 | |
| 682 | case MOUSE_UP: |
| 683 | onMouseUp(mouse); |
| 684 | break; |
| 685 | |
| 686 | case MOUSE_MOTION: |
| 687 | onMouseMotion(mouse); |
| 688 | break; |
| 689 | |
| 690 | default: |
| 691 | throw new IllegalArgumentException("Invalid mouse event type: " |
| 692 | + mouse.getType()); |
| 693 | } |
| 694 | } else if (event instanceof TResizeEvent) { |
| 695 | onResize((TResizeEvent) event); |
| 696 | } else if (event instanceof TCommandEvent) { |
| 697 | onCommand((TCommandEvent) event); |
| 698 | } else if (event instanceof TMenuEvent) { |
| 699 | onMenu((TMenuEvent) event); |
| 700 | } |
| 701 | |
| 702 | // Do nothing else |
| 703 | return; |
| 704 | } |
| 705 | |
| 706 | /** |
| 707 | * Check if a mouse press/release event coordinate is contained in this |
| 708 | * widget. |
| 709 | * |
| 710 | * @param mouse a mouse-based event |
| 711 | * @return whether or not a mouse click would be sent to this widget |
| 712 | */ |
| 713 | public final boolean mouseWouldHit(final TMouseEvent mouse) { |
| 714 | |
| 715 | if (!enabled) { |
| 716 | return false; |
| 717 | } |
| 718 | |
| 719 | if ((mouse.getAbsoluteX() >= getAbsoluteX()) |
| 720 | && (mouse.getAbsoluteX() < getAbsoluteX() + width) |
| 721 | && (mouse.getAbsoluteY() >= getAbsoluteY()) |
| 722 | && (mouse.getAbsoluteY() < getAbsoluteY() + height) |
| 723 | ) { |
| 724 | return true; |
| 725 | } |
| 726 | return false; |
| 727 | } |
| 728 | |
| 729 | } |