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.isInPasswordField)
 232         return;
 233
 234     if (!editorState.selectionIsRange && !editorState.isContentEditable)
 235         return;
 236
 237     WebCore::IntPoint point;
 238 #if ENABLE(TIZEN_WEBKIT2_TILED_BACKING_STORE)
 239     bool isPresentInViewPort = false;
 240 #endif
 241     if (editorState.selectionIsRange) {
 242         WebCore::IntRect leftRect, rightRect;
 243         if (!m_page->getSelectionHandlers(leftRect, rightRect)) {
 244             clear();
 245             return;
 246         }
 247 #if ENABLE(TIZEN_WEBKIT2_TILED_BACKING_STORE)
 248         // Checking if this point is in viewport area. If the calcualated
 249         // point/Left/Right point are in view port then draw else do not draw the
 250         // context menu. Only draw the selection points.
 251         FloatRect unscaledRect = FloatRect(m_pageClient->visibleContentRect());
 252         unscaledRect.scale(1 / m_pageClient->scaleFactor());
 253         IntRect viewportRect = enclosingIntRect(unscaledRect);
 254
 255         WebCore::IntPoint visiblePoint = leftRect.center();
 256         if (viewportRect.contains(visiblePoint)) {
 257             // First check That the modified points are present in view port
 258             point = visiblePoint;
 259             isPresentInViewPort = true;
 260         } else if (viewportRect.contains(leftRect.location())) {
 261             // else if the calculated point is not in the view port area the
 262             // draw context menu at left point if visible
 263             point = leftRect.location();
 264             isPresentInViewPort = true;
 265         } else if (viewportRect.contains(rightRect.maxXMinYCorner())) {
 266             // else if the calculated point is not in the view port area the
 267             // draw context menu at right point if visible
 268             point = rightRect.maxXMinYCorner();
 269             isPresentInViewPort = true;
 270         }
 271 #else
 272         point = leftRect.center();
 273 #endif
 274     } else if (editorState.isContentEditable) {
 275         WebCore::IntRect caretRect;
 276         m_page->getCaretPosition(caretRect);
 277
 278         if (caretRect.isEmpty())
 279             return;
 280
 281         point = caretRect.center();
 282 #if ENABLE(TIZEN_WEBKIT2_TILED_BACKING_STORE)
 283         isPresentInViewPort = true;
 284 #endif
 285     }
 286 #if ENABLE(TIZEN_WEBKIT2_TILED_BACKING_STORE)
 287     if (!isPresentInViewPort)
 288         return;
 289 #endif
 290
 291     // show context menu if its in viewport else do not show the contextmenu
 292
 293     Ewk_View_Smart_Data* smartData = static_cast<Ewk_View_Smart_Data*>(evas_object_smart_data_get(m_object));
 294     if (!smartData || !smartData->api || !smartData->api->mouse_down || !smartData->api->mouse_up)
 295         return;
 296
 297     point = m_viewImpl->transformToScene().mapPoint(point);
 298     Evas* evas = evas_object_evas_get(m_object);
 299
 300     // send mouse down.
 301     Evas_Event_Mouse_Down mouseDown;
 302     mouseDown.button = 3;
 303     mouseDown.output.x = mouseDown.canvas.x = point.x();
 304     mouseDown.output.y = mouseDown.canvas.y = point.y();
 305     mouseDown.data = 0;
 306     mouseDown.modifiers = const_cast<Evas_Modifier*>(evas_key_modifier_get(evas));
 307     mouseDown.locks = const_cast<Evas_Lock*>(evas_key_lock_get(evas));
 308     mouseDown.flags = EVAS_BUTTON_NONE;
 309     mouseDown.timestamp = ecore_time_get() * 1000;
 310     mouseDown.event_flags = EVAS_EVENT_FLAG_NONE;
 311     mouseDown.dev = 0;
 312     smartData->api->mouse_down(smartData, &mouseDown);
 313
 314     // send mouse up.
 315     Evas_Event_Mouse_Up mouseUp;
 316     mouseUp.button = 3;
 317     mouseUp.output.x = mouseUp.canvas.x = point.x();
 318     mouseUp.output.y = mouseUp.canvas.y = point.y();
 319     mouseUp.data = 0;
 320     mouseUp.modifiers = const_cast<Evas_Modifier*>(evas_key_modifier_get(evas));
 321     mouseUp.locks = const_cast<Evas_Lock*>(evas_key_lock_get(evas));
 322     mouseUp.flags = EVAS_BUTTON_NONE;
 323     mouseUp.timestamp = ecore_time_get() * 1000;
 324     mouseUp.event_flags = EVAS_EVENT_FLAG_NONE;
 325     mouseUp.dev = 0;
 326     smartData->api->mouse_up(smartData, &mouseUp);
 327 }
 328
 329 void TextSelection::hideContextMenu()
 330 {
 331     if (!isEnabled())
 332         return;
 333
 334     m_page->hideContextMenu();
 335 }
 336
 337 void TextSelection::setLeftSelectionToEvasPoint(const IntPoint& evasPoint)
 338 {
 339     m_page->setLeftSelection(m_viewImpl->transformFromScene().mapPoint(evasPoint));
 340     updateHandlers();
 341 }
 342
 343 void TextSelection::setRightSelectionToEvasPoint(const IntPoint& evasPoint)
 344 {
 345     m_page->setRightSelection(m_viewImpl->transformFromScene().mapPoint(evasPoint));
 346     updateHandlers();
 347 }
 348
 349 // handle callbacks
 350 void TextSelection::handleMouseDown(TextSelectionHandle* handle, const IntPoint& /*position*/)
 351 {
 352     WebCore::IntPoint basePosition;
 353     EditorState editorState = m_page->editorState();
 354
 355     if (editorState.selectionIsRange) {
 356         WebCore::IntRect leftRect, rightRect;
 357         if (!m_page->getSelectionHandlers(leftRect, rightRect)) {
 358             clear();
 359             return;
 360         }
 361
 362         if (handle->isLeft()) {
 363             basePosition.setX(leftRect.x());
 364             basePosition.setY(leftRect.y() + (leftRect.height()/2));
 365         } else {
 366             basePosition.setX(rightRect.x() + rightRect.width());
 367             basePosition.setY(rightRect.y() + (rightRect.height()/2));
 368         }
 369
 370         handle->setBasePositionForMove(m_viewImpl->transformToScene().mapPoint(basePosition));
 371     } else
 372         return;
 373
 374     hideContextMenu();
 375     updateMagnifier(handle->position());
 376     showMagnifier();
 377 }
 378
 379 void TextSelection::handleMouseMove(TextSelectionHandle* handle, const IntPoint& position)
 380 {
 381     if (handle->isLeft())
 382         setLeftSelectionToEvasPoint(position);
 383     else
 384         setRightSelectionToEvasPoint(position);
 385
 386     updateMagnifier(handle->position());
 387 }
 388
 389 void TextSelection::handleMouseUp(TextSelectionHandle* /* handle */, const IntPoint& /* position */)
 390 {
 391     hideMagnifier();
 392     showContextMenu();
 393 #if ENABLE(TIZEN_WEBKIT2_GET_TEXT_STYLE_FOR_SELECTION)
 394     m_page->getTextStyleStateForSelection();
 395 #endif
 396 }
 397
 398 bool TextSelection::isMagnifierVisible()
 399 {
 400     return m_magnifier->isVisible();
 401 }
 402
 403 void TextSelection::updateHandlesAndContextMenu(bool isShow, bool isScrolling)
 404 {
 405     if (isTextSelectionDowned() && !isScrolling) {
 406         showMagnifier();
 407         return;
 408     }
 409
 410     if (isShow) {
 411         updateHandlers();
 412         showContextMenu();
 413     } else {
 414         hideHandlers();
 415         hideContextMenu();
 416     }
 417
 418     if (isScrolling && isMagnifierVisible())
 419         hideMagnifier();
 420 }
 421
 422 void TextSelection::startMoveAnimator()
 423 {
 424     if (!isEnabled() || !isTextSelectionDowned())
 425         return;
 426
 427     if (!m_moveAnimator)
 428         m_moveAnimator = ecore_animator_add(moveAnimatorCallback, this);
 429 }
 430
 431 void TextSelection::stopMoveAnimator()
 432 {
 433     if (m_moveAnimator) {
 434         ecore_animator_del(m_moveAnimator);
 435         m_moveAnimator = 0;
 436     }
 437 }
 438
 439 void TextSelection::onMouseUp(void* data, Evas*, Evas_Object*, void* eventInfo)
 440 {
 441     static_cast<TextSelection*>(data)->textSelectionUp(IntPoint());
 442 }
 443
 444 Eina_Bool TextSelection::moveAnimatorCallback(void* data)
 445 {
 446     TextSelection* textSelection = static_cast<TextSelection*>(data);
 447
 448     Evas_Coord_Point point;
 449     evas_pointer_canvas_xy_get(evas_object_evas_get(textSelection->m_object), &point.x, &point.y);
 450     textSelection->textSelectionMove(IntPoint(point.x, point.y));
 451
 452     return ECORE_CALLBACK_RENEW;
 453 }
 454
 455 // 'return false' means text selection is not possible for point.
 456 // 'return true' means text selection is possible.
 457 bool TextSelection::textSelectionDown(const IntPoint& point, bool isStartedTextSelectionFromOutside)
 458 {
 459     setIsTextSelectionMode(false);
 460
 461     IntPoint contentsPoint = m_viewImpl->transformFromScene().mapPoint(point);
 462     bool result = m_page->selectClosestWord(contentsPoint, isStartedTextSelectionFromOutside);
 463     if (!result)
 464         return false;
 465
 466     if (isTextSelectionMode()) {
 467         hide();
 468     } else {
 469         setIsTextSelectionMode(true);
 470     }
 471     setIsTextSelectionDowned(true);
 472
 473     updateMagnifier(point);
 474     showMagnifier();
 475
 476     startMoveAnimator();
 477
 478     return true;
 479 }
 480
 481 void TextSelection::textSelectionMove(const IntPoint& point, bool isStartedTextSelectionFromOutside)
 482 {
 483     if (!isTextSelectionMode()) {
 484         stopMoveAnimator();
 485         return;
 486     }
 487
 488     WebCore::IntPoint viewPoint = m_viewImpl->transformFromScene().mapPoint(point);
 489     EditorState editorState = m_page->editorState();
 490     if (editorState.isContentEditable) {
 491         IntRect mapRect = m_viewImpl->transformToScene().mapRect(editorState.editorRect);
 492         if(mapRect.contains(point)) {
 493             m_page->selectClosestWord(viewPoint, isStartedTextSelectionFromOutside);
 494             updateMagnifier(point);
 495         }
 496     } else {
 497         m_page->selectClosestWord(viewPoint, isStartedTextSelectionFromOutside);
 498         updateMagnifier(point);
 499     }
 500     showMagnifier();
 501 }
 502
 503 void TextSelection::textSelectionUp(const IntPoint& point, bool isStartedTextSelectionFromOutside)
 504 {
 505     stopMoveAnimator();
 506
 507     if (!isTextSelectionMode() || !isTextSelectionDowned())
 508         return;
 509
 510     setIsTextSelectionDowned(false);
 511     hideMagnifier();
 512
 513     EditorState editorState = m_page->editorState();
 514     if (editorState.selectionIsRange || editorState.isContentEditable) {
 515         if (editorState.selectionIsRange)
 516             updateHandlers();
 517
 518         showContextMenu();
 519     } else if (!isStartedTextSelectionFromOutside)
 520         setIsTextSelectionMode(false);
 521
 522 #if ENABLE(TIZEN_WEBKIT2_GET_TEXT_STYLE_FOR_SELECTION)
 523     m_page->getTextStyleStateForSelection();
 524 #endif
 525 }
 526
 527 #if ENABLE(TIZEN_WEBKIT2_FOR_MOVING_TEXT_SELECTION_HANDLE_FROM_OSP)
 528 TextSelectionHandle* TextSelection::getSelectedHandle(const IntPoint& position)
 529 {
 530     WebCore::IntRect leftHandleRect = m_leftHandle->getHandleRect();
 531     if (leftHandleRect.contains(position))
 532         return m_leftHandle;
 533
 534     WebCore::IntRect rightHandleRect = m_rightHandle->getHandleRect();
 535     if (rightHandleRect.contains(position))
 536         return m_rightHandle;
 537
 538     return 0;
 539 }
 540
 541 void TextSelection::textSelectionHandleDown(const IntPoint& position)
 542 {
 543     TextSelectionHandle* selectedHandle = getSelectedHandle(position);
 544     if (selectedHandle) {
 545         selectedHandle->mouseDown(position);
 546         if (selectedHandle->isMouseDowned())
 547             return;
 548     }
 549
 550     EditorState editorState = m_page->editorState();
 551     if (editorState.isContentEditable)
 552         setIsTextSelectionMode(false);
 553 }
 554
 555 void TextSelection::textSelectionHandleMove(const IntPoint& position)
 556 {
 557     if (isTextSelectionHandleDowned()) {
 558         TextSelectionHandle* selectedHandle = m_leftHandle->isMouseDowned() ? m_leftHandle : m_rightHandle;
 559         selectedHandle->mouseMove(position);
 560     }
 561 }
 562
 563 void TextSelection::textSelectionHandleUp()
 564 {
 565     if (isTextSelectionHandleDowned()) {
 566         TextSelectionHandle* selectedHandle = m_leftHandle->isMouseDowned() ? m_leftHandle : m_rightHandle;
 567         selectedHandle->mouseUp();
 568     }
 569 }
 570 #endif
 571
 572 bool TextSelection::isEnabled()
 573 {
 574     return ewk_settings_text_selection_enabled_get(ewk_view_settings_get(m_object));
 575 }
 576
 577 bool TextSelection::isAutomaticClearEnabled()
 578 {
 579     return ewk_settings_clear_text_selection_automatically_get(ewk_view_settings_get(m_object));
 580 }
 581
 582 } // namespace WebKit
 583
 584 #endif // TIZEN_WEBKIT2_TEXT_SELECTION