Source/WebKit2/UIProcess/API/efl/tizen/TextSelection.cpp

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27
  28 #if ENABLE(TIZEN_WEBKIT2_TEXT_SELECTION)
  29 #include "TextSelection.h"
  30
  31 #include "EditorState.h"
  32 #include "NativeWebMouseEvent.h"
  33 #include "ewk_view.h"
  34 #include <Elementary.h>
  35
  36 using namespace WebCore;
  37
  38 namespace WebKit {
  39
  40 TextSelection::TextSelection(Evas_Object* viewWidget, WebPageProxy* page, PageClientImpl* pageClient)
  41       : m_object(viewWidget)
  42       , m_page(page)
  43       , m_pageClient(pageClient)
  44       , m_isTextSelectionDowned(false)
  45       , m_isTextSelectionMode(false)
  46       , m_moveAnimator(0)
  47 {
  48     ASSERT(viewWidget);
  49
  50     m_viewImpl = EwkViewImpl::fromEvasObject(m_object);
  51
  52     const Eina_List* defaultThemeList = elm_theme_list_get(0);
  53
  54     const Eina_List* l;
  55     void* theme;
  56     EINA_LIST_FOREACH(defaultThemeList, l, theme) {
  57         char* themePath = elm_theme_list_item_path_get((const char*)theme, 0);
  58
  59         if (themePath) {
  60             m_leftHandle = new TextSelectionHandle(m_object, themePath, "elm/entry/selection/block_handle_left", true, this);
  61             m_rightHandle = new TextSelectionHandle(m_object, themePath, "elm/entry/selection/block_handle_right", false, this);
  62
  63             free(themePath);
  64             break;
  65         }
  66     }
  67
  68     m_magnifier = new TextSelectionMagnifier(m_object, page, pageClient);
  69
  70     evas_object_event_callback_add(m_object, EVAS_CALLBACK_MOUSE_UP, onMouseUp, this);
  71 }
  72
  73 TextSelection::~TextSelection()
  74 {
  75     if (m_leftHandle)
  76         delete m_leftHandle;
  77
  78     if (m_rightHandle)
  79         delete m_rightHandle;
  80
  81     delete m_magnifier;
  82
  83     evas_object_event_callback_del(m_object, EVAS_CALLBACK_MOUSE_UP, onMouseUp);
  84 }
  85
  86 void TextSelection::update()
  87 {
  88     if (isTextSelectionMode() ) {
  89         EditorState editorState = m_page->editorState();
  90         if (!editorState.selectionIsRange) {
  91             if (editorState.isContentEditable && !evas_object_focus_get(m_object)) {
  92                 WebCore::IntRect caretRect;
  93                 m_page->getCaretPosition(caretRect);
  94                 if (!caretRect.isEmpty())
  95                     return;
  96             } else {
  97                 WebCore::IntRect leftRect;
  98                 WebCore::IntRect rightRect;
  99                 if (isTextSelectionDowned() || m_page->getSelectionHandlers(leftRect, rightRect))
 100                     return;
 101
 102                 setIsTextSelectionMode(false);
 103             }
 104 #if ENABLE(TIZEN_WEBKIT2_GET_TEXT_STYLE_FOR_SELECTION)
 105             m_page->getTextStyleStateForSelection();
 106 #endif
 107         } else {
 108             if (!isTextSelectionDowned() && !isTextSelectionHandleDowned()) {
 109                 updateHandlers();
 110                 showContextMenu();
 111 #if ENABLE(TIZEN_WEBKIT2_GET_TEXT_STYLE_FOR_SELECTION)
 112                 m_page->getTextStyleStateForSelection();
 113 #endif
 114             }
 115         }
 116     }
 117 #if ENABLE(TIZEN_WEBKIT2_GET_TEXT_STYLE_FOR_SELECTION)
 118     else {
 119         EditorState editorState = m_page->editorState();
 120         if (editorState.isContentEditable && !editorState.selectionIsRange) {
 121             WebCore::IntRect caretRect;
 122             m_page->getCaretPosition(caretRect);
 123             if (!caretRect.isEmpty()) {
 124                 m_page->getTextStyleStateForSelection();
 125             }
 126         }
 127     }
 128 #endif
 129 }
 130
 131 void TextSelection::setIsTextSelectionMode(bool isTextSelectionMode)
 132 {
 133     if (!isAutomaticClearEnabled())
 134         return;
 135
 136     if (!isTextSelectionMode) {
 137         hide();
 138         clear();
 139     }
 140
 141     m_isTextSelectionMode = isTextSelectionMode;
 142 }
 143
 144 void TextSelection::clear()
 145 {
 146     EditorState editorState = m_page->editorState();
 147     if (!editorState.selectionIsRange)
 148         return;
 149
 150     m_page->selectionRangeClear();
 151 }
 152
 153 void TextSelection::hide()
 154 {
 155     hideHandlers();
 156     hideMagnifier();
 157     hideContextMenu();
 158 }
 159
 160 void TextSelection::updateHandlers()
 161 {
 162     WebCore::IntRect leftRect, rightRect;
 163     if (!m_page->getSelectionHandlers(leftRect, rightRect)) {
 164         clear();
 165         return;
 166     }
 167
 168     AffineTransform toEvasTransform = m_viewImpl->transformToScene();
 169     WebCore::IntPoint leftEvasPoint = toEvasTransform.mapPoint(leftRect.minXMaxYCorner());
 170     WebCore::IntPoint rightEvasPoint = toEvasTransform.mapPoint(rightRect.maxXMaxYCorner());
 171
 172     EditorState editorState = m_page->editorState();
 173     if (editorState.isContentEditable) {
 174         m_leftHandle->hide();
 175         m_rightHandle->hide();
 176
 177         WebCore::IntRect editorRect = editorState.editorRect;
 178         WebCore::IntPoint editorLeftEvasPoint = toEvasTransform.mapPoint(editorRect.location());
 179         WebCore::IntPoint editorRightEvasPoint = toEvasTransform.mapPoint(editorRect.maxXMaxYCorner());
 180         int webViewX, webViewY, webViewWidth, webViewHeight;
 181
 182         evas_object_geometry_get(m_object, &webViewX, &webViewY, &webViewWidth, &webViewHeight);
 183         if ((editorLeftEvasPoint.x() <= leftEvasPoint.x() && editorLeftEvasPoint.y() <= leftEvasPoint.y())
 184             && (webViewX <= leftEvasPoint.x() && webViewY <= leftEvasPoint.y())) {
 185                 m_leftHandle->move(leftEvasPoint);
 186                 m_leftHandle->show();
 187         }
 188
 189         if ((editorRightEvasPoint.x() >= rightEvasPoint.x() && editorRightEvasPoint.y() >= rightEvasPoint.y())
 190             && ((webViewX + webViewWidth) >= rightEvasPoint.x() && (webViewY <= rightEvasPoint.y() && (webViewY + webViewHeight) >= rightEvasPoint.y()))) {
 191             m_rightHandle->move(rightEvasPoint);
 192             m_rightHandle->show();
 193         }
 194     } else {
 195         m_leftHandle->move(leftEvasPoint);
 196         m_leftHandle->show();
 197
 198         m_rightHandle->move(rightEvasPoint);
 199         m_rightHandle->show();
 200     }
 201 }
 202
 203 void TextSelection::hideHandlers()
 204 {
 205     m_leftHandle->hide();
 206     m_rightHandle->hide();
 207 }
 208
 209 void TextSelection::showMagnifier()
 210 {
 211     m_magnifier->show();
 212 }
 213
 214 void TextSelection::hideMagnifier()
 215 {
 216     m_magnifier->hide();
 217 }
 218
 219 void TextSelection::updateMagnifier(const IntPoint& position)
 220 {
 221     m_magnifier->update(position);
 222     m_magnifier->move(position);
 223 }
 224
 225 void TextSelection::showContextMenu()
 226 {
 227     if (!isEnabled())
 228         return;
 229
 230     EditorState editorState = m_page->editorState();
 231     if (!editorState.selectionIsRange && !editorState.isContentEditable)
 232         return;
 233
 234     WebCore::IntPoint point;
 235 #if ENABLE(TIZEN_WEBKIT2_TILED_BACKING_STORE)
 236     bool isPresentInViewPort = false;
 237 #endif
 238     if (editorState.selectionIsRange) {
 239         WebCore::IntRect leftRect, rightRect;
 240         if (!m_page->getSelectionHandlers(leftRect, rightRect)) {
 241             clear();
 242             return;
 243         }
 244 #if ENABLE(TIZEN_WEBKIT2_TILED_BACKING_STORE)
 245         // Checking if this point is in viewport area. If the calcualated
 246         // point/Left/Right point are in view port then draw else do not draw the
 247         // context menu. Only draw the selection points.
 248         FloatRect unscaledRect = FloatRect(m_pageClient->visibleContentRect());
 249         unscaledRect.scale(1 / m_pageClient->scaleFactor());
 250         IntRect viewportRect = enclosingIntRect(unscaledRect);
 251
 252         WebCore::IntPoint visiblePoint = leftRect.center();
 253         if (viewportRect.contains(visiblePoint)) {
 254             // First check That the modified points are present in view port
 255             point = visiblePoint;
 256             isPresentInViewPort = true;
 257         } else if (viewportRect.contains(leftRect.location())) {
 258             // else if the calculated point is not in the view port area the
 259             // draw context menu at left point if visible
 260             point = leftRect.location();
 261             isPresentInViewPort = true;
 262         } else if (viewportRect.contains(rightRect.maxXMinYCorner())) {
 263             // else if the calculated point is not in the view port area the
 264             // draw context menu at right point if visible
 265             point = rightRect.maxXMinYCorner();
 266             isPresentInViewPort = true;
 267         }
 268 #else
 269         point = leftRect.center();
 270 #endif
 271     } else if (editorState.isContentEditable) {
 272         WebCore::IntRect caretRect;
 273         m_page->getCaretPosition(caretRect);
 274
 275         if (caretRect.isEmpty())
 276             return;
 277
 278         point = caretRect.center();
 279 #if ENABLE(TIZEN_WEBKIT2_TILED_BACKING_STORE)
 280         isPresentInViewPort = true;
 281 #endif
 282     }
 283 #if ENABLE(TIZEN_WEBKIT2_TILED_BACKING_STORE)
 284     if (!isPresentInViewPort)
 285         return;
 286 #endif
 287
 288     // show context menu if its in viewport else do not show the contextmenu
 289
 290     Ewk_View_Smart_Data* smartData = static_cast<Ewk_View_Smart_Data*>(evas_object_smart_data_get(m_object));
 291     if (!smartData || !smartData->api || !smartData->api->mouse_down || !smartData->api->mouse_up)
 292         return;
 293
 294     point = m_viewImpl->transformToScene().mapPoint(point);
 295     Evas* evas = evas_object_evas_get(m_object);
 296
 297     // send mouse down.
 298     Evas_Event_Mouse_Down mouseDown;
 299     mouseDown.button = 3;
 300     mouseDown.output.x = mouseDown.canvas.x = point.x();
 301     mouseDown.output.y = mouseDown.canvas.y = point.y();
 302     mouseDown.data = 0;
 303     mouseDown.modifiers = const_cast<Evas_Modifier*>(evas_key_modifier_get(evas));
 304     mouseDown.locks = const_cast<Evas_Lock*>(evas_key_lock_get(evas));
 305     mouseDown.flags = EVAS_BUTTON_NONE;
 306     mouseDown.timestamp = ecore_time_get() * 1000;
 307     mouseDown.event_flags = EVAS_EVENT_FLAG_NONE;
 308     mouseDown.dev = 0;
 309     smartData->api->mouse_down(smartData, &mouseDown);
 310
 311     // send mouse up.
 312     Evas_Event_Mouse_Up mouseUp;
 313     mouseUp.button = 3;
 314     mouseUp.output.x = mouseUp.canvas.x = point.x();
 315     mouseUp.output.y = mouseUp.canvas.y = point.y();
 316     mouseUp.data = 0;
 317     mouseUp.modifiers = const_cast<Evas_Modifier*>(evas_key_modifier_get(evas));
 318     mouseUp.locks = const_cast<Evas_Lock*>(evas_key_lock_get(evas));
 319     mouseUp.flags = EVAS_BUTTON_NONE;
 320     mouseUp.timestamp = ecore_time_get() * 1000;
 321     mouseUp.event_flags = EVAS_EVENT_FLAG_NONE;
 322     mouseUp.dev = 0;
 323     smartData->api->mouse_up(smartData, &mouseUp);
 324 }
 325
 326 void TextSelection::hideContextMenu()
 327 {
 328     if (!isEnabled())
 329         return;
 330
 331     m_page->hideContextMenu();
 332 }
 333
 334 void TextSelection::setLeftSelectionToEvasPoint(const IntPoint& evasPoint)
 335 {
 336     m_page->setLeftSelection(m_viewImpl->transformFromScene().mapPoint(evasPoint));
 337     updateHandlers();
 338 }
 339
 340 void TextSelection::setRightSelectionToEvasPoint(const IntPoint& evasPoint)
 341 {
 342     m_page->setRightSelection(m_viewImpl->transformFromScene().mapPoint(evasPoint));
 343     updateHandlers();
 344 }
 345
 346 // handle callbacks
 347 void TextSelection::handleMouseDown(TextSelectionHandle* handle, const IntPoint& /*position*/)
 348 {
 349     WebCore::IntPoint basePosition;
 350     EditorState editorState = m_page->editorState();
 351
 352     if (editorState.selectionIsRange) {
 353         WebCore::IntRect leftRect, rightRect;
 354         if (!m_page->getSelectionHandlers(leftRect, rightRect)) {
 355             clear();
 356             return;
 357         }
 358
 359         if (handle->isLeft()) {
 360             basePosition.setX(leftRect.x());
 361             basePosition.setY(leftRect.y() + (leftRect.height()/2));
 362         } else {
 363             basePosition.setX(rightRect.x() + rightRect.width());
 364             basePosition.setY(rightRect.y() + (rightRect.height()/2));
 365         }
 366
 367         handle->setBasePositionForMove(m_viewImpl->transformToScene().mapPoint(basePosition));
 368     } else
 369         return;
 370
 371     hideContextMenu();
 372     updateMagnifier(handle->position());
 373     showMagnifier();
 374 }
 375
 376 void TextSelection::handleMouseMove(TextSelectionHandle* handle, const IntPoint& position)
 377 {
 378     if (handle->isLeft())
 379         setLeftSelectionToEvasPoint(position);
 380     else
 381         setRightSelectionToEvasPoint(position);
 382
 383     updateMagnifier(handle->position());
 384 }
 385
 386 void TextSelection::handleMouseUp(TextSelectionHandle* /* handle */, const IntPoint& /* position */)
 387 {
 388     hideMagnifier();
 389     showContextMenu();
 390 #if ENABLE(TIZEN_WEBKIT2_GET_TEXT_STYLE_FOR_SELECTION)
 391     m_page->getTextStyleStateForSelection();
 392 #endif
 393 }
 394
 395 bool TextSelection::isMagnifierVisible()
 396 {
 397     return m_magnifier->isVisible();
 398 }
 399
 400 void TextSelection::updateHandlesAndContextMenu(bool isShow, bool isScrolling)
 401 {
 402     if (isTextSelectionDowned() && !isScrolling) {
 403         showMagnifier();
 404         return;
 405     }
 406
 407     if (isShow) {
 408         updateHandlers();
 409         showContextMenu();
 410     } else {
 411         hideHandlers();
 412         hideContextMenu();
 413     }
 414
 415     if (isScrolling && isMagnifierVisible())
 416         hideMagnifier();
 417 }
 418
 419 void TextSelection::startMoveAnimator()
 420 {
 421     if (!isEnabled() || !isTextSelectionDowned())
 422         return;
 423
 424     if (!m_moveAnimator)
 425         m_moveAnimator = ecore_animator_add(moveAnimatorCallback, this);
 426 }
 427
 428 void TextSelection::stopMoveAnimator()
 429 {
 430     if (m_moveAnimator) {
 431         ecore_animator_del(m_moveAnimator);
 432         m_moveAnimator = 0;
 433     }
 434 }
 435
 436 void TextSelection::onMouseUp(void* data, Evas*, Evas_Object*, void* eventInfo)
 437 {
 438     static_cast<TextSelection*>(data)->textSelectionUp(IntPoint());
 439 }
 440
 441 Eina_Bool TextSelection::moveAnimatorCallback(void* data)
 442 {
 443     TextSelection* textSelection = static_cast<TextSelection*>(data);
 444
 445     Evas_Coord_Point point;
 446     evas_pointer_canvas_xy_get(evas_object_evas_get(textSelection->m_object), &point.x, &point.y);
 447     textSelection->textSelectionMove(IntPoint(point.x, point.y));
 448
 449     return ECORE_CALLBACK_RENEW;
 450 }
 451
 452 // 'return false' means text selection is not possible for point.
 453 // 'return true' means text selection is possible.
 454 bool TextSelection::textSelectionDown(const IntPoint& point, bool isStartedTextSelectionFromOutside)
 455 {
 456     setIsTextSelectionMode(false);
 457
 458     IntPoint contentsPoint = m_viewImpl->transformFromScene().mapPoint(point);
 459     bool result = m_page->selectClosestWord(contentsPoint, isStartedTextSelectionFromOutside);
 460     if (!result)
 461         return false;
 462
 463     if (isTextSelectionMode()) {
 464         hide();
 465     } else {
 466         setIsTextSelectionMode(true);
 467     }
 468     setIsTextSelectionDowned(true);
 469
 470     updateMagnifier(point);
 471     showMagnifier();
 472
 473     startMoveAnimator();
 474
 475     return true;
 476 }
 477
 478 void TextSelection::textSelectionMove(const IntPoint& point, bool isStartedTextSelectionFromOutside)
 479 {
 480     if (!isTextSelectionMode()) {
 481         stopMoveAnimator();
 482         return;
 483     }
 484
 485     WebCore::IntPoint viewPoint = m_viewImpl->transformFromScene().mapPoint(point);
 486     EditorState editorState = m_page->editorState();
 487     if (editorState.isContentEditable) {
 488         IntRect mapRect = m_viewImpl->transformToScene().mapRect(editorState.editorRect);
 489         if(mapRect.contains(point)) {
 490             m_page->selectClosestWord(viewPoint, isStartedTextSelectionFromOutside);
 491             updateMagnifier(point);
 492         }
 493     } else {
 494         m_page->selectClosestWord(viewPoint, isStartedTextSelectionFromOutside);
 495         updateMagnifier(point);
 496     }
 497     showMagnifier();
 498 }
 499
 500 void TextSelection::textSelectionUp(const IntPoint& point, bool isStartedTextSelectionFromOutside)
 501 {
 502     stopMoveAnimator();
 503
 504     if (!isTextSelectionMode() || !isTextSelectionDowned())
 505         return;
 506
 507     setIsTextSelectionDowned(false);
 508     hideMagnifier();
 509
 510     EditorState editorState = m_page->editorState();
 511     if (editorState.selectionIsRange || editorState.isContentEditable) {
 512         if (editorState.selectionIsRange)
 513             updateHandlers();
 514
 515         showContextMenu();
 516     } else if (!isStartedTextSelectionFromOutside)
 517         setIsTextSelectionMode(false);
 518
 519 #if ENABLE(TIZEN_WEBKIT2_GET_TEXT_STYLE_FOR_SELECTION)
 520     m_page->getTextStyleStateForSelection();
 521 #endif
 522 }
 523
 524 #if ENABLE(TIZEN_WEBKIT2_FOR_MOVING_TEXT_SELECTION_HANDLE_FROM_OSP)
 525 TextSelectionHandle* TextSelection::getSelectedHandle(const IntPoint& position)
 526 {
 527     WebCore::IntRect leftHandleRect = m_leftHandle->getHandleRect();
 528     if (leftHandleRect.contains(position))
 529         return m_leftHandle;
 530
 531     WebCore::IntRect rightHandleRect = m_rightHandle->getHandleRect();
 532     if (rightHandleRect.contains(position))
 533         return m_rightHandle;
 534
 535     return 0;
 536 }
 537
 538 void TextSelection::textSelectionHandleDown(const IntPoint& position)
 539 {
 540     TextSelectionHandle* selectedHandle = getSelectedHandle(position);
 541     if (selectedHandle) {
 542         selectedHandle->mouseDown(position);
 543         if (selectedHandle->isMouseDowned())
 544             return;
 545     }
 546
 547     EditorState editorState = m_page->editorState();
 548     if (editorState.isContentEditable)
 549         setIsTextSelectionMode(false);
 550 }
 551
 552 void TextSelection::textSelectionHandleMove(const IntPoint& position)
 553 {
 554     if (isTextSelectionHandleDowned()) {
 555         TextSelectionHandle* selectedHandle = m_leftHandle->isMouseDowned() ? m_leftHandle : m_rightHandle;
 556         selectedHandle->mouseMove(position);
 557     }
 558 }
 559
 560 void TextSelection::textSelectionHandleUp()
 561 {
 562     if (isTextSelectionHandleDowned()) {
 563         TextSelectionHandle* selectedHandle = m_leftHandle->isMouseDowned() ? m_leftHandle : m_rightHandle;
 564         selectedHandle->mouseUp();
 565     }
 566 }
 567 #endif
 568
 569 bool TextSelection::isEnabled()
 570 {
 571     return ewk_settings_text_selection_enabled_get(ewk_view_settings_get(m_object));
 572 }
 573
 574 bool TextSelection::isAutomaticClearEnabled()
 575 {
 576     return ewk_settings_clear_text_selection_automatically_get(ewk_view_settings_get(m_object));
 577 }
 578
 579 } // namespace WebKit
 580
 581 #endif // TIZEN_WEBKIT2_TEXT_SELECTION