content/renderer/pepper/event_conversion.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/pepper/event_conversion.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/i18n/char_iterator.h"
   9 #include "base/logging.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/strings/stringprintf.h"
  13 #include "base/strings/utf_string_conversion_utils.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "content/common/input/web_touch_event_traits.h"
  16 #include "content/renderer/pepper/usb_key_code_conversion.h"
  17 #include "ppapi/c/pp_input_event.h"
  18 #include "ppapi/shared_impl/ppb_input_event_shared.h"
  19 #include "ppapi/shared_impl/time_conversion.h"
  20 #include "third_party/WebKit/public/platform/WebGamepads.h"
  21 #include "third_party/WebKit/public/platform/WebString.h"
  22 #include "third_party/WebKit/public/web/WebInputEvent.h"
  23
  24 using ppapi::EventTimeToPPTimeTicks;
  25 using ppapi::InputEventData;
  26 using ppapi::PPTimeTicksToEventTime;
  27 using blink::WebInputEvent;
  28 using blink::WebKeyboardEvent;
  29 using blink::WebMouseEvent;
  30 using blink::WebMouseWheelEvent;
  31 using blink::WebString;
  32 using blink::WebTouchEvent;
  33 using blink::WebTouchPoint;
  34 using blink::WebUChar;
  35
  36 namespace content {
  37
  38 namespace {
  39
  40 // Verify the modifier flags WebKit uses match the Pepper ones. If these start
  41 // not matching, we'll need to write conversion code to preserve the Pepper
  42 // values (since plugins will be depending on them).
  43 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_SHIFTKEY) ==
  44                   static_cast<int>(WebInputEvent::ShiftKey),
  45               "ShiftKey should match");
  46 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_CONTROLKEY) ==
  47                   static_cast<int>(WebInputEvent::ControlKey),
  48               "ControlKey should match");
  49 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_ALTKEY) ==
  50                   static_cast<int>(WebInputEvent::AltKey),
  51               "AltKey should match");
  52 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_METAKEY) ==
  53                   static_cast<int>(WebInputEvent::MetaKey),
  54               "MetaKey should match");
  55 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_ISKEYPAD) ==
  56                   static_cast<int>(WebInputEvent::IsKeyPad),
  57               "KeyPad should match");
  58 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_ISAUTOREPEAT) ==
  59                   static_cast<int>(WebInputEvent::IsAutoRepeat),
  60               "AutoRepeat should match");
  61 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) ==
  62                   static_cast<int>(WebInputEvent::LeftButtonDown),
  63               "LeftButton should match");
  64 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN) ==
  65                   static_cast<int>(WebInputEvent::MiddleButtonDown),
  66               "MiddleButton should match");
  67 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_RIGHTBUTTONDOWN) ==
  68                   static_cast<int>(WebInputEvent::RightButtonDown),
  69               "RightButton should match");
  70 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_CAPSLOCKKEY) ==
  71                   static_cast<int>(WebInputEvent::CapsLockOn),
  72               "CapsLock should match");
  73 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_NUMLOCKKEY) ==
  74                   static_cast<int>(WebInputEvent::NumLockOn),
  75               "NumLock should match");
  76 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_ISLEFT) ==
  77                   static_cast<int>(WebInputEvent::IsLeft),
  78               "IsLeft should match");
  79 static_assert(static_cast<int>(PP_INPUTEVENT_MODIFIER_ISRIGHT) ==
  80                   static_cast<int>(WebInputEvent::IsRight),
  81               "IsRight should match");
  82
  83 PP_InputEvent_Type ConvertEventTypes(WebInputEvent::Type wetype) {
  84   switch (wetype) {
  85     case WebInputEvent::MouseDown:
  86       return PP_INPUTEVENT_TYPE_MOUSEDOWN;
  87     case WebInputEvent::MouseUp:
  88       return PP_INPUTEVENT_TYPE_MOUSEUP;
  89     case WebInputEvent::MouseMove:
  90       return PP_INPUTEVENT_TYPE_MOUSEMOVE;
  91     case WebInputEvent::MouseEnter:
  92       return PP_INPUTEVENT_TYPE_MOUSEENTER;
  93     case WebInputEvent::MouseLeave:
  94       return PP_INPUTEVENT_TYPE_MOUSELEAVE;
  95     case WebInputEvent::ContextMenu:
  96       return PP_INPUTEVENT_TYPE_CONTEXTMENU;
  97     case WebInputEvent::MouseWheel:
  98       return PP_INPUTEVENT_TYPE_WHEEL;
  99     case WebInputEvent::RawKeyDown:
 100       return PP_INPUTEVENT_TYPE_RAWKEYDOWN;
 101     case WebInputEvent::KeyDown:
 102       return PP_INPUTEVENT_TYPE_KEYDOWN;
 103     case WebInputEvent::KeyUp:
 104       return PP_INPUTEVENT_TYPE_KEYUP;
 105     case WebInputEvent::Char:
 106       return PP_INPUTEVENT_TYPE_CHAR;
 107     case WebInputEvent::TouchStart:
 108       return PP_INPUTEVENT_TYPE_TOUCHSTART;
 109     case WebInputEvent::TouchMove:
 110       return PP_INPUTEVENT_TYPE_TOUCHMOVE;
 111     case WebInputEvent::TouchEnd:
 112       return PP_INPUTEVENT_TYPE_TOUCHEND;
 113     case WebInputEvent::TouchCancel:
 114       return PP_INPUTEVENT_TYPE_TOUCHCANCEL;
 115     case WebInputEvent::Undefined:
 116     default:
 117       return PP_INPUTEVENT_TYPE_UNDEFINED;
 118   }
 119 }
 120
 121 // Generates a PP_InputEvent with the fields common to all events, as well as
 122 // the event type from the given web event. Event-specific fields will be zero
 123 // initialized.
 124 InputEventData GetEventWithCommonFieldsAndType(const WebInputEvent& web_event) {
 125   InputEventData result;
 126   result.event_type = ConvertEventTypes(web_event.type);
 127   result.event_time_stamp = EventTimeToPPTimeTicks(web_event.timeStampSeconds);
 128   return result;
 129 }
 130
 131 void AppendKeyEvent(const WebInputEvent& event,
 132                     std::vector<InputEventData>* result_events) {
 133   const WebKeyboardEvent& key_event =
 134       static_cast<const WebKeyboardEvent&>(event);
 135   InputEventData result = GetEventWithCommonFieldsAndType(event);
 136   result.event_modifiers = key_event.modifiers;
 137   result.key_code = key_event.windowsKeyCode;
 138   result.code = CodeForKeyboardEvent(key_event);
 139   result_events->push_back(result);
 140 }
 141
 142 void AppendCharEvent(const WebInputEvent& event,
 143                      std::vector<InputEventData>* result_events) {
 144   const WebKeyboardEvent& key_event =
 145       static_cast<const WebKeyboardEvent&>(event);
 146
 147   // This is a bit complex, the input event will normally just have one 16-bit
 148   // character in it, but may be zero or more than one. The text array is
 149   // just padded with 0 values for the unused ones, but is not necessarily
 150   // null-terminated.
 151   //
 152   // Here we see how many UTF-16 characters we have.
 153   size_t utf16_char_count = 0;
 154   while (utf16_char_count < WebKeyboardEvent::textLengthCap &&
 155          key_event.text[utf16_char_count])
 156     utf16_char_count++;
 157
 158   // Make a separate InputEventData for each Unicode character in the input.
 159   base::i18n::UTF16CharIterator iter(key_event.text, utf16_char_count);
 160   while (!iter.end()) {
 161     InputEventData result = GetEventWithCommonFieldsAndType(event);
 162     result.event_modifiers = key_event.modifiers;
 163     base::WriteUnicodeCharacter(iter.get(), &result.character_text);
 164
 165     result_events->push_back(result);
 166     iter.Advance();
 167   }
 168 }
 169
 170 void AppendMouseEvent(const WebInputEvent& event,
 171                       std::vector<InputEventData>* result_events) {
 172   static_assert(static_cast<int>(WebMouseEvent::ButtonNone) ==
 173                     static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_NONE),
 174                 "MouseNone should match");
 175   static_assert(static_cast<int>(WebMouseEvent::ButtonLeft) ==
 176                     static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_LEFT),
 177                 "MouseLeft should match");
 178   static_assert(static_cast<int>(WebMouseEvent::ButtonRight) ==
 179                     static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_RIGHT),
 180                 "MouseRight should match");
 181   static_assert(static_cast<int>(WebMouseEvent::ButtonMiddle) ==
 182                     static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_MIDDLE),
 183                 "MouseMiddle should match");
 184
 185   const WebMouseEvent& mouse_event = static_cast<const WebMouseEvent&>(event);
 186   InputEventData result = GetEventWithCommonFieldsAndType(event);
 187   result.event_modifiers = mouse_event.modifiers;
 188   if (mouse_event.type == WebInputEvent::MouseDown ||
 189       mouse_event.type == WebInputEvent::MouseMove ||
 190       mouse_event.type == WebInputEvent::MouseUp) {
 191     result.mouse_button =
 192         static_cast<PP_InputEvent_MouseButton>(mouse_event.button);
 193   }
 194   result.mouse_position.x = mouse_event.x;
 195   result.mouse_position.y = mouse_event.y;
 196   result.mouse_click_count = mouse_event.clickCount;
 197   result.mouse_movement.x = mouse_event.movementX;
 198   result.mouse_movement.y = mouse_event.movementY;
 199   result_events->push_back(result);
 200 }
 201
 202 void AppendMouseWheelEvent(const WebInputEvent& event,
 203                            std::vector<InputEventData>* result_events) {
 204   const WebMouseWheelEvent& mouse_wheel_event =
 205       static_cast<const WebMouseWheelEvent&>(event);
 206   InputEventData result = GetEventWithCommonFieldsAndType(event);
 207   result.event_modifiers = mouse_wheel_event.modifiers;
 208   result.wheel_delta.x = mouse_wheel_event.deltaX;
 209   result.wheel_delta.y = mouse_wheel_event.deltaY;
 210   result.wheel_ticks.x = mouse_wheel_event.wheelTicksX;
 211   result.wheel_ticks.y = mouse_wheel_event.wheelTicksY;
 212   result.wheel_scroll_by_page = !!mouse_wheel_event.scrollByPage;
 213   result_events->push_back(result);
 214 }
 215
 216 enum IncludedTouchPointTypes {
 217   ALL,     // All pointers targetting the plugin.
 218   ACTIVE,  // Only pointers that are currently down.
 219   CHANGED  // Only pointers that have changed since the previous event.
 220 };
 221 void SetPPTouchPoints(const WebTouchPoint* touches,
 222                       uint32_t touches_length,
 223                       IncludedTouchPointTypes included_types,
 224                       std::vector<PP_TouchPoint>* result) {
 225   for (uint32_t i = 0; i < touches_length; i++) {
 226     const WebTouchPoint& touch_point = touches[i];
 227     if (included_types == ACTIVE &&
 228         (touch_point.state == WebTouchPoint::StateReleased ||
 229          touch_point.state == WebTouchPoint::StateCancelled)) {
 230       continue;
 231     }
 232     if (included_types == CHANGED &&
 233         (touch_point.state == WebTouchPoint::StateUndefined ||
 234          touch_point.state == WebTouchPoint::StateStationary)) {
 235       continue;
 236     }
 237     PP_TouchPoint pp_pt;
 238     pp_pt.id = touch_point.id;
 239     pp_pt.position.x = touch_point.position.x;
 240     pp_pt.position.y = touch_point.position.y;
 241     pp_pt.radius.x = touch_point.radiusX;
 242     pp_pt.radius.y = touch_point.radiusY;
 243     pp_pt.rotation_angle = touch_point.rotationAngle;
 244     pp_pt.pressure = touch_point.force;
 245     result->push_back(pp_pt);
 246   }
 247 }
 248
 249 void AppendTouchEvent(const WebInputEvent& event,
 250                       std::vector<InputEventData>* result_events) {
 251   const WebTouchEvent& touch_event =
 252       reinterpret_cast<const WebTouchEvent&>(event);
 253
 254   InputEventData result = GetEventWithCommonFieldsAndType(event);
 255   SetPPTouchPoints(
 256       touch_event.touches, touch_event.touchesLength, ACTIVE, &result.touches);
 257   SetPPTouchPoints(touch_event.touches,
 258                    touch_event.touchesLength,
 259                    CHANGED,
 260                    &result.changed_touches);
 261   SetPPTouchPoints(touch_event.touches,
 262                    touch_event.touchesLength,
 263                    ALL,
 264                    &result.target_touches);
 265
 266   result_events->push_back(result);
 267 }
 268
 269 WebTouchPoint CreateWebTouchPoint(const PP_TouchPoint& pp_pt,
 270                                   WebTouchPoint::State state) {
 271   WebTouchPoint pt;
 272   pt.id = pp_pt.id;
 273   pt.position.x = pp_pt.position.x;
 274   pt.position.y = pp_pt.position.y;
 275   // TODO bug:http://code.google.com/p/chromium/issues/detail?id=93902
 276   pt.screenPosition.x = 0;
 277   pt.screenPosition.y = 0;
 278   pt.force = pp_pt.pressure;
 279   pt.radiusX = pp_pt.radius.x;
 280   pt.radiusY = pp_pt.radius.y;
 281   pt.rotationAngle = pp_pt.rotation_angle;
 282   pt.state = state;
 283   return pt;
 284 }
 285
 286 bool HasTouchPointWithId(const WebTouchPoint* web_touches,
 287                          uint32_t web_touches_length,
 288                          uint32_t id) {
 289   // Note: A brute force search to find the (potentially) existing touch point
 290   // is cheap given the small bound on |WebTouchEvent::touchesLengthCap|.
 291   for (uint32_t i = 0; i < web_touches_length; ++i) {
 292     if (web_touches[i].id == static_cast<int>(id))
 293       return true;
 294   }
 295   return false;
 296 }
 297
 298 void SetWebTouchPointsIfNotYetSet(const std::vector<PP_TouchPoint>& pp_touches,
 299                                   WebTouchPoint::State state,
 300                                   WebTouchPoint* web_touches,
 301                                   uint32_t* web_touches_length) {
 302   const uint32_t initial_web_touches_length = *web_touches_length;
 303   const uint32_t touches_length =
 304       std::min(static_cast<uint32_t>(pp_touches.size()),
 305                static_cast<uint32_t>(WebTouchEvent::touchesLengthCap));
 306   for (uint32_t i = 0; i < touches_length; ++i) {
 307     const uint32_t touch_index = *web_touches_length;
 308     if (touch_index >= static_cast<uint32_t>(WebTouchEvent::touchesLengthCap))
 309       return;
 310
 311     const PP_TouchPoint& pp_pt = pp_touches[i];
 312     if (HasTouchPointWithId(web_touches, initial_web_touches_length, pp_pt.id))
 313       continue;
 314
 315     web_touches[touch_index] = CreateWebTouchPoint(pp_pt, state);
 316     ++(*web_touches_length);
 317   }
 318 }
 319
 320 WebTouchEvent* BuildTouchEvent(const InputEventData& event) {
 321   WebTouchEvent* web_event = new WebTouchEvent();
 322   WebTouchPoint::State state = WebTouchPoint::StateUndefined;
 323   WebInputEvent::Type type = WebInputEvent::Undefined;
 324   switch (event.event_type) {
 325     case PP_INPUTEVENT_TYPE_TOUCHSTART:
 326       type = WebInputEvent::TouchStart;
 327       state = WebTouchPoint::StatePressed;
 328       break;
 329     case PP_INPUTEVENT_TYPE_TOUCHMOVE:
 330       type = WebInputEvent::TouchMove;
 331       state = WebTouchPoint::StateMoved;
 332       break;
 333     case PP_INPUTEVENT_TYPE_TOUCHEND:
 334       type = WebInputEvent::TouchEnd;
 335       state = WebTouchPoint::StateReleased;
 336       break;
 337     case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
 338       type = WebInputEvent::TouchCancel;
 339       state = WebTouchPoint::StateCancelled;
 340       break;
 341     default:
 342       NOTREACHED();
 343   }
 344   WebTouchEventTraits::ResetType(
 345       type, PPTimeTicksToEventTime(event.event_time_stamp), web_event);
 346   web_event->touchesLength = 0;
 347
 348   // First add all changed touches, then add only the remaining unset
 349   // (stationary) touches.
 350   SetWebTouchPointsIfNotYetSet(event.changed_touches,
 351                                state,
 352                                web_event->touches,
 353                                &web_event->touchesLength);
 354   SetWebTouchPointsIfNotYetSet(event.touches,
 355                                WebTouchPoint::StateStationary,
 356                                web_event->touches,
 357                                &web_event->touchesLength);
 358
 359   return web_event;
 360 }
 361
 362 WebKeyboardEvent* BuildKeyEvent(const InputEventData& event) {
 363   WebKeyboardEvent* key_event = new WebKeyboardEvent();
 364   switch (event.event_type) {
 365     case PP_INPUTEVENT_TYPE_RAWKEYDOWN:
 366       key_event->type = WebInputEvent::RawKeyDown;
 367       break;
 368     case PP_INPUTEVENT_TYPE_KEYDOWN:
 369       key_event->type = WebInputEvent::KeyDown;
 370       break;
 371     case PP_INPUTEVENT_TYPE_KEYUP:
 372       key_event->type = WebInputEvent::KeyUp;
 373       break;
 374     default:
 375       NOTREACHED();
 376   }
 377   key_event->timeStampSeconds = PPTimeTicksToEventTime(event.event_time_stamp);
 378   key_event->modifiers = event.event_modifiers;
 379   key_event->windowsKeyCode = event.key_code;
 380   key_event->setKeyIdentifierFromWindowsKeyCode();
 381   return key_event;
 382 }
 383
 384 WebKeyboardEvent* BuildCharEvent(const InputEventData& event) {
 385   WebKeyboardEvent* key_event = new WebKeyboardEvent();
 386   key_event->type = WebInputEvent::Char;
 387   key_event->timeStampSeconds = PPTimeTicksToEventTime(event.event_time_stamp);
 388   key_event->modifiers = event.event_modifiers;
 389
 390   // Make sure to not read beyond the buffer in case some bad code doesn't
 391   // NULL-terminate it (this is called from plugins).
 392   size_t text_length_cap = WebKeyboardEvent::textLengthCap;
 393   base::string16 text16 = base::UTF8ToUTF16(event.character_text);
 394
 395   memset(key_event->text, 0, text_length_cap);
 396   memset(key_event->unmodifiedText, 0, text_length_cap);
 397   for (size_t i = 0; i < std::min(text_length_cap, text16.size()); ++i)
 398     key_event->text[i] = text16[i];
 399   return key_event;
 400 }
 401
 402 WebMouseEvent* BuildMouseEvent(const InputEventData& event) {
 403   WebMouseEvent* mouse_event = new WebMouseEvent();
 404   switch (event.event_type) {
 405     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 406       mouse_event->type = WebInputEvent::MouseDown;
 407       break;
 408     case PP_INPUTEVENT_TYPE_MOUSEUP:
 409       mouse_event->type = WebInputEvent::MouseUp;
 410       break;
 411     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 412       mouse_event->type = WebInputEvent::MouseMove;
 413       break;
 414     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 415       mouse_event->type = WebInputEvent::MouseEnter;
 416       break;
 417     case PP_INPUTEVENT_TYPE_MOUSELEAVE:
 418       mouse_event->type = WebInputEvent::MouseLeave;
 419       break;
 420     case PP_INPUTEVENT_TYPE_CONTEXTMENU:
 421       mouse_event->type = WebInputEvent::ContextMenu;
 422       break;
 423     default:
 424       NOTREACHED();
 425   }
 426   mouse_event->timeStampSeconds =
 427       PPTimeTicksToEventTime(event.event_time_stamp);
 428   mouse_event->modifiers = event.event_modifiers;
 429   mouse_event->button = static_cast<WebMouseEvent::Button>(event.mouse_button);
 430   if (mouse_event->type == WebInputEvent::MouseMove) {
 431     if (mouse_event->modifiers & WebInputEvent::LeftButtonDown)
 432       mouse_event->button = WebMouseEvent::ButtonLeft;
 433     else if (mouse_event->modifiers & WebInputEvent::MiddleButtonDown)
 434       mouse_event->button = WebMouseEvent::ButtonMiddle;
 435     else if (mouse_event->modifiers & WebInputEvent::RightButtonDown)
 436       mouse_event->button = WebMouseEvent::ButtonRight;
 437   }
 438   mouse_event->x = event.mouse_position.x;
 439   mouse_event->y = event.mouse_position.y;
 440   mouse_event->clickCount = event.mouse_click_count;
 441   mouse_event->movementX = event.mouse_movement.x;
 442   mouse_event->movementY = event.mouse_movement.y;
 443   return mouse_event;
 444 }
 445
 446 WebMouseWheelEvent* BuildMouseWheelEvent(const InputEventData& event) {
 447   WebMouseWheelEvent* mouse_wheel_event = new WebMouseWheelEvent();
 448   mouse_wheel_event->type = WebInputEvent::MouseWheel;
 449   mouse_wheel_event->timeStampSeconds =
 450       PPTimeTicksToEventTime(event.event_time_stamp);
 451   mouse_wheel_event->modifiers = event.event_modifiers;
 452   mouse_wheel_event->deltaX = event.wheel_delta.x;
 453   mouse_wheel_event->deltaY = event.wheel_delta.y;
 454   mouse_wheel_event->wheelTicksX = event.wheel_ticks.x;
 455   mouse_wheel_event->wheelTicksY = event.wheel_ticks.y;
 456   mouse_wheel_event->scrollByPage = event.wheel_scroll_by_page;
 457   return mouse_wheel_event;
 458 }
 459
 460 #if !defined(OS_WIN)
 461 #define VK_RETURN 0x0D
 462
 463 #define VK_PRIOR 0x21
 464 #define VK_NEXT 0x22
 465 #define VK_END 0x23
 466 #define VK_HOME 0x24
 467 #define VK_LEFT 0x25
 468 #define VK_UP 0x26
 469 #define VK_RIGHT 0x27
 470 #define VK_DOWN 0x28
 471 #define VK_SNAPSHOT 0x2C
 472 #define VK_INSERT 0x2D
 473 #define VK_DELETE 0x2E
 474
 475 #define VK_APPS 0x5D
 476
 477 #define VK_F1 0x70
 478 #endif
 479
 480 // Convert a character string to a Windows virtual key code. Adapted from
 481 // src/content/shell/renderer/test_runner/event_sender.cc. This
 482 // is used by CreateSimulatedWebInputEvents to convert keyboard events.
 483 void GetKeyCode(const std::string& char_text,
 484                 WebUChar* code,
 485                 WebUChar* text,
 486                 bool* needs_shift_modifier,
 487                 bool* generate_char) {
 488   WebUChar vk_code = 0;
 489   WebUChar vk_text = 0;
 490   *needs_shift_modifier = false;
 491   *generate_char = false;
 492   if ("\n" == char_text) {
 493     vk_text = vk_code = VK_RETURN;
 494     *generate_char = true;
 495   } else if ("rightArrow" == char_text) {
 496     vk_code = VK_RIGHT;
 497   } else if ("downArrow" == char_text) {
 498     vk_code = VK_DOWN;
 499   } else if ("leftArrow" == char_text) {
 500     vk_code = VK_LEFT;
 501   } else if ("upArrow" == char_text) {
 502     vk_code = VK_UP;
 503   } else if ("insert" == char_text) {
 504     vk_code = VK_INSERT;
 505   } else if ("delete" == char_text) {
 506     vk_code = VK_DELETE;
 507   } else if ("pageUp" == char_text) {
 508     vk_code = VK_PRIOR;
 509   } else if ("pageDown" == char_text) {
 510     vk_code = VK_NEXT;
 511   } else if ("home" == char_text) {
 512     vk_code = VK_HOME;
 513   } else if ("end" == char_text) {
 514     vk_code = VK_END;
 515   } else if ("printScreen" == char_text) {
 516     vk_code = VK_SNAPSHOT;
 517   } else if ("menu" == char_text) {
 518     vk_code = VK_APPS;
 519   } else {
 520     // Compare the input string with the function-key names defined by the
 521     // DOM spec (i.e. "F1",...,"F24").
 522     for (int i = 1; i <= 24; ++i) {
 523       std::string functionKeyName = base::StringPrintf("F%d", i);
 524       if (functionKeyName == char_text) {
 525         vk_code = VK_F1 + (i - 1);
 526         break;
 527       }
 528     }
 529     if (!vk_code) {
 530       WebString web_char_text =
 531           WebString::fromUTF8(char_text.data(), char_text.size());
 532       DCHECK_EQ(web_char_text.length(), 1U);
 533       vk_text = vk_code = web_char_text.at(0);
 534       *needs_shift_modifier =
 535           (vk_code & 0xFF) >= 'A' && (vk_code & 0xFF) <= 'Z';
 536       if ((vk_code & 0xFF) >= 'a' && (vk_code & 0xFF) <= 'z')
 537         vk_code -= 'a' - 'A';
 538       *generate_char = true;
 539     }
 540   }
 541
 542   *code = vk_code;
 543   *text = vk_text;
 544 }
 545
 546 }  // namespace
 547
 548 void CreateInputEventData(const WebInputEvent& event,
 549                           std::vector<InputEventData>* result) {
 550   result->clear();
 551
 552   switch (event.type) {
 553     case WebInputEvent::MouseDown:
 554     case WebInputEvent::MouseUp:
 555     case WebInputEvent::MouseMove:
 556     case WebInputEvent::MouseEnter:
 557     case WebInputEvent::MouseLeave:
 558     case WebInputEvent::ContextMenu:
 559       AppendMouseEvent(event, result);
 560       break;
 561     case WebInputEvent::MouseWheel:
 562       AppendMouseWheelEvent(event, result);
 563       break;
 564     case WebInputEvent::RawKeyDown:
 565     case WebInputEvent::KeyDown:
 566     case WebInputEvent::KeyUp:
 567       AppendKeyEvent(event, result);
 568       break;
 569     case WebInputEvent::Char:
 570       AppendCharEvent(event, result);
 571       break;
 572     case WebInputEvent::TouchStart:
 573     case WebInputEvent::TouchMove:
 574     case WebInputEvent::TouchEnd:
 575     case WebInputEvent::TouchCancel:
 576       AppendTouchEvent(event, result);
 577       break;
 578     case WebInputEvent::Undefined:
 579     default:
 580       break;
 581   }
 582 }
 583
 584 WebInputEvent* CreateWebInputEvent(const InputEventData& event) {
 585   scoped_ptr<WebInputEvent> web_input_event;
 586   switch (event.event_type) {
 587     case PP_INPUTEVENT_TYPE_UNDEFINED:
 588       return NULL;
 589     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 590     case PP_INPUTEVENT_TYPE_MOUSEUP:
 591     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 592     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 593     case PP_INPUTEVENT_TYPE_MOUSELEAVE:
 594     case PP_INPUTEVENT_TYPE_CONTEXTMENU:
 595       web_input_event.reset(BuildMouseEvent(event));
 596       break;
 597     case PP_INPUTEVENT_TYPE_WHEEL:
 598       web_input_event.reset(BuildMouseWheelEvent(event));
 599       break;
 600     case PP_INPUTEVENT_TYPE_RAWKEYDOWN:
 601     case PP_INPUTEVENT_TYPE_KEYDOWN:
 602     case PP_INPUTEVENT_TYPE_KEYUP:
 603       web_input_event.reset(BuildKeyEvent(event));
 604       break;
 605     case PP_INPUTEVENT_TYPE_CHAR:
 606       web_input_event.reset(BuildCharEvent(event));
 607       break;
 608     case PP_INPUTEVENT_TYPE_IME_COMPOSITION_START:
 609     case PP_INPUTEVENT_TYPE_IME_COMPOSITION_UPDATE:
 610     case PP_INPUTEVENT_TYPE_IME_COMPOSITION_END:
 611     case PP_INPUTEVENT_TYPE_IME_TEXT:
 612       // TODO(kinaba) implement in WebKit an event structure to handle
 613       // composition events.
 614       NOTREACHED();
 615       break;
 616     case PP_INPUTEVENT_TYPE_TOUCHSTART:
 617     case PP_INPUTEVENT_TYPE_TOUCHMOVE:
 618     case PP_INPUTEVENT_TYPE_TOUCHEND:
 619     case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
 620       web_input_event.reset(BuildTouchEvent(event));
 621       break;
 622   }
 623
 624   return web_input_event.release();
 625 }
 626
 627 // Generate a coherent sequence of input events to simulate a user event.
 628 // From src/content/shell/renderer/test_runner/event_sender.cc.
 629 std::vector<linked_ptr<WebInputEvent> > CreateSimulatedWebInputEvents(
 630     const ppapi::InputEventData& event,
 631     int plugin_x,
 632     int plugin_y) {
 633   std::vector<linked_ptr<WebInputEvent> > events;
 634   linked_ptr<WebInputEvent> original_event(CreateWebInputEvent(event));
 635
 636   switch (event.event_type) {
 637     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 638     case PP_INPUTEVENT_TYPE_MOUSEUP:
 639     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 640     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 641     case PP_INPUTEVENT_TYPE_MOUSELEAVE:
 642     case PP_INPUTEVENT_TYPE_TOUCHSTART:
 643     case PP_INPUTEVENT_TYPE_TOUCHMOVE:
 644     case PP_INPUTEVENT_TYPE_TOUCHEND:
 645     case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
 646       events.push_back(original_event);
 647       break;
 648
 649     case PP_INPUTEVENT_TYPE_WHEEL: {
 650       WebMouseWheelEvent* web_mouse_wheel_event =
 651           static_cast<WebMouseWheelEvent*>(original_event.get());
 652       web_mouse_wheel_event->x = plugin_x;
 653       web_mouse_wheel_event->y = plugin_y;
 654       events.push_back(original_event);
 655       break;
 656     }
 657
 658     case PP_INPUTEVENT_TYPE_RAWKEYDOWN:
 659     case PP_INPUTEVENT_TYPE_KEYDOWN:
 660     case PP_INPUTEVENT_TYPE_KEYUP: {
 661 // Windows key down events should always be "raw" to avoid an ASSERT.
 662 #if defined(OS_WIN)
 663       WebKeyboardEvent* web_keyboard_event =
 664           static_cast<WebKeyboardEvent*>(original_event.get());
 665       if (web_keyboard_event->type == WebInputEvent::KeyDown)
 666         web_keyboard_event->type = WebInputEvent::RawKeyDown;
 667 #endif
 668       events.push_back(original_event);
 669       break;
 670     }
 671
 672     case PP_INPUTEVENT_TYPE_CHAR: {
 673       WebKeyboardEvent* web_char_event =
 674           static_cast<WebKeyboardEvent*>(original_event.get());
 675
 676       WebUChar code = 0, text = 0;
 677       bool needs_shift_modifier = false, generate_char = false;
 678       GetKeyCode(event.character_text,
 679                  &code,
 680                  &text,
 681                  &needs_shift_modifier,
 682                  &generate_char);
 683
 684       // Synthesize key down and key up events in all cases.
 685       scoped_ptr<WebKeyboardEvent> key_down_event(new WebKeyboardEvent());
 686       scoped_ptr<WebKeyboardEvent> key_up_event(new WebKeyboardEvent());
 687
 688       key_down_event->type = WebInputEvent::RawKeyDown;
 689       key_down_event->windowsKeyCode = code;
 690       key_down_event->nativeKeyCode = code;
 691       if (needs_shift_modifier)
 692         key_down_event->modifiers |= WebInputEvent::ShiftKey;
 693
 694       // If a char event is needed, set the text fields.
 695       if (generate_char) {
 696         key_down_event->text[0] = text;
 697         key_down_event->unmodifiedText[0] = text;
 698       }
 699       // Convert the key code to a string identifier.
 700       key_down_event->setKeyIdentifierFromWindowsKeyCode();
 701
 702       *key_up_event = *web_char_event = *key_down_event;
 703
 704       events.push_back(linked_ptr<WebInputEvent>(key_down_event.release()));
 705
 706       if (generate_char) {
 707         web_char_event->type = WebInputEvent::Char;
 708         web_char_event->keyIdentifier[0] = '\0';
 709         events.push_back(original_event);
 710       }
 711
 712       key_up_event->type = WebInputEvent::KeyUp;
 713       events.push_back(linked_ptr<WebInputEvent>(key_up_event.release()));
 714       break;
 715     }
 716
 717     default:
 718       break;
 719   }
 720   return events;
 721 }
 722
 723 PP_InputEvent_Class ClassifyInputEvent(WebInputEvent::Type type) {
 724   switch (type) {
 725     case WebInputEvent::MouseDown:
 726     case WebInputEvent::MouseUp:
 727     case WebInputEvent::MouseMove:
 728     case WebInputEvent::MouseEnter:
 729     case WebInputEvent::MouseLeave:
 730     case WebInputEvent::ContextMenu:
 731       return PP_INPUTEVENT_CLASS_MOUSE;
 732     case WebInputEvent::MouseWheel:
 733       return PP_INPUTEVENT_CLASS_WHEEL;
 734     case WebInputEvent::RawKeyDown:
 735     case WebInputEvent::KeyDown:
 736     case WebInputEvent::KeyUp:
 737     case WebInputEvent::Char:
 738       return PP_INPUTEVENT_CLASS_KEYBOARD;
 739     case WebInputEvent::TouchCancel:
 740     case WebInputEvent::TouchEnd:
 741     case WebInputEvent::TouchMove:
 742     case WebInputEvent::TouchStart:
 743       return PP_INPUTEVENT_CLASS_TOUCH;
 744     case WebInputEvent::Undefined:
 745     default:
 746       CHECK(WebInputEvent::isGestureEventType(type));
 747       return PP_InputEvent_Class(0);
 748   }
 749 }
 750
 751 }  // namespace content