DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (d1ed7de67f5a)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// vim:set ts=2 sts=2 sw=2 et cin:
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* rendering objects for replaced elements implemented by a plugin */

#include "nsObjectFrame.h"

#include "gfx2DGlue.h"
#include "mozilla/BasicEvents.h"
#ifdef XP_WIN
// This is needed for DoublePassRenderingEvent.
#include "mozilla/plugins/PluginMessageUtils.h"
#endif

#include "nscore.h"
#include "nsCOMPtr.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsWidgetsCID.h"
#include "nsView.h"
#include "nsViewManager.h"
#include "nsString.h"
#include "nsGkAtoms.h"
#include "nsIPluginInstanceOwner.h"
#include "nsNPAPIPluginInstance.h"
#include "nsIDOMElement.h"
#include "nsRenderingContext.h"
#include "npapi.h"
#include "nsIObjectLoadingContent.h"
#include "nsContentUtils.h"
#include "nsDisplayList.h"
#include "nsFocusManager.h"
#include "nsLayoutUtils.h"
#include "nsFrameManager.h"
#include "nsIObserverService.h"
#include "GeckoProfiler.h"
#include <algorithm>

#include "nsIObjectFrame.h"
#include "nsPluginNativeWindow.h"
#include "FrameLayerBuilder.h"

#include "ImageLayers.h"
#include "nsPluginInstanceOwner.h"

#ifdef XP_WIN
#include "gfxWindowsNativeDrawing.h"
#include "gfxWindowsSurface.h"
#endif

#include "Layers.h"
#include "ReadbackLayer.h"
#include "ImageContainer.h"

// accessibility support
#ifdef ACCESSIBILITY
#include "nsAccessibilityService.h"
#endif

#ifdef MOZ_LOGGING
#define FORCE_PR_LOG 1 /* Allow logging in the release build */
#endif /* MOZ_LOGGING */
#include "prlog.h"

#ifdef XP_MACOSX
#include "gfxQuartzNativeDrawing.h"
#include "nsPluginUtilsOSX.h"
#include "mozilla/gfx/QuartzSupport.h"
#endif

#ifdef MOZ_X11
#include "mozilla/X11Util.h"
using mozilla::DefaultXDisplay;
#endif

#ifdef XP_WIN
#include <wtypes.h>
#include <winuser.h>
#endif

#ifdef MOZ_WIDGET_ANDROID
#include "AndroidBridge.h"
#include "GLContext.h"
#endif

#ifdef CreateEvent // Thank you MS.
#undef CreateEvent
#endif

#ifdef PR_LOGGING 
static PRLogModuleInfo *
GetObjectFrameLog()
{
  static PRLogModuleInfo *sLog;
  if (!sLog)
    sLog = PR_NewLogModule("nsObjectFrame");
  return sLog;
}
#endif /* PR_LOGGING */

#if defined(XP_MACOSX) && !defined(__LP64__)

// The header files QuickdrawAPI.h and QDOffscreen.h are missing on OS X 10.7
// and up (though the QuickDraw APIs defined in them are still present) -- so
// we need to supply the relevant parts of their contents here.  It's likely
// that Apple will eventually remove the APIs themselves (probably in OS X
// 10.8), so we need to make them weak imports, and test for their presence
// before using them.
extern "C" {
  #if !defined(__QUICKDRAWAPI__)
  extern void SetRect(
    Rect * r,
    short  left,
    short  top,
    short  right,
    short  bottom)
    __attribute__((weak_import));
  #endif /* __QUICKDRAWAPI__ */

  #if !defined(__QDOFFSCREEN__)
  extern QDErr NewGWorldFromPtr(
    GWorldPtr *   offscreenGWorld,
    UInt32        PixelFormat,
    const Rect *  boundsRect,
    CTabHandle    cTable,                /* can be nullptr */
    GDHandle      aGDevice,              /* can be nullptr */
    GWorldFlags   flags,
    Ptr           newBuffer,
    SInt32        rowBytes)
    __attribute__((weak_import));
  extern void DisposeGWorld(GWorldPtr offscreenGWorld)
    __attribute__((weak_import));
  #endif /* __QDOFFSCREEN__ */
}

#endif /* #if defined(XP_MACOSX) && !defined(__LP64__) */

using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::layers;

class PluginBackgroundSink : public ReadbackSink {
public:
  PluginBackgroundSink(nsObjectFrame* aFrame, uint64_t aStartSequenceNumber)
    : mLastSequenceNumber(aStartSequenceNumber), mFrame(aFrame) {}
  ~PluginBackgroundSink()
  {
    if (mFrame) {
      mFrame->mBackgroundSink = nullptr;
    }
  }

  virtual void SetUnknown(uint64_t aSequenceNumber)
  {
    if (!AcceptUpdate(aSequenceNumber))
      return;
    mFrame->mInstanceOwner->SetBackgroundUnknown();
  }

  virtual already_AddRefed<gfxContext>
      BeginUpdate(const nsIntRect& aRect, uint64_t aSequenceNumber)
  {
    if (!AcceptUpdate(aSequenceNumber))
      return nullptr;
    return mFrame->mInstanceOwner->BeginUpdateBackground(aRect);
  }

  virtual void EndUpdate(gfxContext* aContext, const nsIntRect& aRect)
  {
    return mFrame->mInstanceOwner->EndUpdateBackground(aContext, aRect);
  }

  void Destroy() { mFrame = nullptr; }

protected:
  bool AcceptUpdate(uint64_t aSequenceNumber) {
    if (aSequenceNumber > mLastSequenceNumber && mFrame &&
        mFrame->mInstanceOwner) {
      mLastSequenceNumber = aSequenceNumber;
      return true;
    }
    return false;
  }

  uint64_t mLastSequenceNumber;
  nsObjectFrame* mFrame;
};

nsObjectFrame::nsObjectFrame(nsStyleContext* aContext)
  : nsObjectFrameSuper(aContext)
  , mReflowCallbackPosted(false)
{
  PR_LOG(GetObjectFrameLog(), PR_LOG_DEBUG,
         ("Created new nsObjectFrame %p\n", this));
}

nsObjectFrame::~nsObjectFrame()
{
  PR_LOG(GetObjectFrameLog(), PR_LOG_DEBUG,
         ("nsObjectFrame %p deleted\n", this));
}

NS_QUERYFRAME_HEAD(nsObjectFrame)
  NS_QUERYFRAME_ENTRY(nsObjectFrame)
  NS_QUERYFRAME_ENTRY(nsIObjectFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsObjectFrameSuper)

#ifdef ACCESSIBILITY
a11y::AccType
nsObjectFrame::AccessibleType()
{
  return a11y::ePluginType;
}

#ifdef XP_WIN
NS_IMETHODIMP nsObjectFrame::GetPluginPort(HWND *aPort)
{
  *aPort = (HWND) mInstanceOwner->GetPluginPortFromWidget();
  return NS_OK;
}
#endif
#endif

void
nsObjectFrame::Init(nsIContent*       aContent,
                    nsContainerFrame* aParent,
                    nsIFrame*         aPrevInFlow)
{
  PR_LOG(GetObjectFrameLog(), PR_LOG_DEBUG,
         ("Initializing nsObjectFrame %p for content %p\n", this, aContent));

  nsObjectFrameSuper::Init(aContent, aParent, aPrevInFlow);
}

void
nsObjectFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
  if (mReflowCallbackPosted) {
    PresContext()->PresShell()->CancelReflowCallback(this);
  }

  // Tell content owner of the instance to disconnect its frame.
  nsCOMPtr<nsIObjectLoadingContent> objContent(do_QueryInterface(mContent));
  NS_ASSERTION(objContent, "Why not an object loading content?");

  // The content might not have a reference to the instance owner any longer in
  // the case of re-entry during instantiation or teardown, so make sure we're
  // dissociated.
  if (mInstanceOwner) {
    mInstanceOwner->SetFrame(nullptr);
  }
  objContent->HasNewFrame(nullptr);

  if (mBackgroundSink) {
    mBackgroundSink->Destroy();
  }

  nsObjectFrameSuper::DestroyFrom(aDestructRoot);
}

/* virtual */ void
nsObjectFrame::DidSetStyleContext(nsStyleContext* aOldStyleContext)
{
  if (HasView()) {
    nsView* view = GetView();
    nsViewManager* vm = view->GetViewManager();
    if (vm) {
      nsViewVisibility visibility = 
        IsHidden() ? nsViewVisibility_kHide : nsViewVisibility_kShow;
      vm->SetViewVisibility(view, visibility);
    }
  }

  nsObjectFrameSuper::DidSetStyleContext(aOldStyleContext);
}

nsIAtom*
nsObjectFrame::GetType() const
{
  return nsGkAtoms::objectFrame; 
}

#ifdef DEBUG_FRAME_DUMP
nsresult
nsObjectFrame::GetFrameName(nsAString& aResult) const
{
  return MakeFrameName(NS_LITERAL_STRING("ObjectFrame"), aResult);
}
#endif

nsresult
nsObjectFrame::PrepForDrawing(nsIWidget *aWidget)
{
  mWidget = aWidget;

  nsView* view = GetView();
  NS_ASSERTION(view, "Object frames must have views");  
  if (!view) {
    return NS_ERROR_FAILURE;
  }

  nsViewManager* viewMan = view->GetViewManager();
  // mark the view as hidden since we don't know the (x,y) until Paint
  // XXX is the above comment correct?
  viewMan->SetViewVisibility(view, nsViewVisibility_kHide);

  //this is ugly. it was ripped off from didreflow(). MMP
  // Position and size view relative to its parent, not relative to our
  // parent frame (our parent frame may not have a view).
  
  nsView* parentWithView;
  nsPoint origin;
  nsRect r(0, 0, mRect.width, mRect.height);

  GetOffsetFromView(origin, &parentWithView);
  viewMan->ResizeView(view, r);
  viewMan->MoveViewTo(view, origin.x, origin.y);

  nsPresContext* presContext = PresContext();
  nsRootPresContext* rpc = presContext->GetRootPresContext();
  if (!rpc) {
    return NS_ERROR_FAILURE;
  }

  if (mWidget) {
    // Disallow windowed plugins in popups
    nsIFrame* rootFrame = rpc->PresShell()->FrameManager()->GetRootFrame();
    nsIWidget* parentWidget = rootFrame->GetNearestWidget();
    if (!parentWidget || nsLayoutUtils::GetDisplayRootFrame(this) != rootFrame) {
      return NS_ERROR_FAILURE;
    }

    mInnerView = viewMan->CreateView(GetContentRectRelativeToSelf(), view);
    if (!mInnerView) {
      NS_ERROR("Could not create inner view");
      return NS_ERROR_OUT_OF_MEMORY;
    }
    viewMan->InsertChild(view, mInnerView, nullptr, true);

    mWidget->SetParent(parentWidget);
    mWidget->Show(true);
    mWidget->Enable(true);

    // Set the plugin window to have an empty clip region until we know
    // what our true position, size and clip region are. These
    // will be reset when nsRootPresContext computes our true
    // geometry. The plugin window does need to have a good size here, so
    // set the size explicitly to a reasonable guess.
    nsAutoTArray<nsIWidget::Configuration,1> configurations;
    nsIWidget::Configuration* configuration = configurations.AppendElement();
    nscoord appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
    configuration->mChild = mWidget;
    configuration->mBounds.width = NSAppUnitsToIntPixels(mRect.width, appUnitsPerDevPixel);
    configuration->mBounds.height = NSAppUnitsToIntPixels(mRect.height, appUnitsPerDevPixel);
    parentWidget->ConfigureChildren(configurations);

    nsRefPtr<nsDeviceContext> dx = viewMan->GetDeviceContext();
    mInnerView->AttachWidgetEventHandler(mWidget);

#ifdef XP_MACOSX
    // On Mac, we need to invalidate ourselves since even windowed
    // plugins are painted through Thebes and we need to ensure
    // the Thebes layer containing the plugin is updated.
    if (parentWidget == GetNearestWidget()) {
      InvalidateFrame();
    }
#endif

    RegisterPluginForGeometryUpdates();

    // Here we set the background color for this widget because some plugins will use 
    // the child window background color when painting. If it's not set, it may default to gray
    // Sometimes, a frame doesn't have a background color or is transparent. In this
    // case, walk up the frame tree until we do find a frame with a background color
    for (nsIFrame* frame = this; frame; frame = frame->GetParent()) {
      nscolor bgcolor =
        frame->GetVisitedDependentColor(eCSSProperty_background_color);
      if (NS_GET_A(bgcolor) > 0) {  // make sure we got an actual color
        mWidget->SetBackgroundColor(bgcolor);
        break;
      }
    }
  } else {
    // Changing to windowless mode changes the NPWindow geometry.
    FixupWindow(GetContentRectRelativeToSelf().Size());

#ifndef XP_MACOSX
    RegisterPluginForGeometryUpdates();
#endif
  }

  if (!IsHidden()) {
    viewMan->SetViewVisibility(view, nsViewVisibility_kShow);
  }

#ifdef ACCESSIBILITY
  nsAccessibilityService* accService = nsIPresShell::AccService();
  if (accService) {
    accService->RecreateAccessible(PresContext()->PresShell(), mContent);
  }
#endif

  return NS_OK;
}

#define EMBED_DEF_WIDTH 240
#define EMBED_DEF_HEIGHT 200

/* virtual */ nscoord
nsObjectFrame::GetMinISize(nsRenderingContext *aRenderingContext)
{
  nscoord result = 0;

  if (!IsHidden(false)) {
    nsIAtom *atom = mContent->Tag();
    if (atom == nsGkAtoms::applet || atom == nsGkAtoms::embed) {
      result = nsPresContext::CSSPixelsToAppUnits(EMBED_DEF_WIDTH);
    }
  }

  DISPLAY_MIN_WIDTH(this, result);
  return result;
}

/* virtual */ nscoord
nsObjectFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
{
  return nsObjectFrame::GetMinISize(aRenderingContext);
}

void
nsObjectFrame::GetDesiredSize(nsPresContext* aPresContext,
                              const nsHTMLReflowState& aReflowState,
                              nsHTMLReflowMetrics& aMetrics)
{
  // By default, we have no area
  aMetrics.ClearSize();

  if (IsHidden(false)) {
    return;
  }

  aMetrics.Width() = aReflowState.ComputedWidth();
  aMetrics.Height() = aReflowState.ComputedHeight();

  // for EMBED and APPLET, default to 240x200 for compatibility
  nsIAtom *atom = mContent->Tag();
  if (atom == nsGkAtoms::applet || atom == nsGkAtoms::embed) {
    if (aMetrics.Width() == NS_UNCONSTRAINEDSIZE) {
      aMetrics.Width() = clamped(nsPresContext::CSSPixelsToAppUnits(EMBED_DEF_WIDTH),
                               aReflowState.ComputedMinWidth(),
                               aReflowState.ComputedMaxWidth());
    }
    if (aMetrics.Height() == NS_UNCONSTRAINEDSIZE) {
      aMetrics.Height() = clamped(nsPresContext::CSSPixelsToAppUnits(EMBED_DEF_HEIGHT),
                                aReflowState.ComputedMinHeight(),
                                aReflowState.ComputedMaxHeight());
    }

#if defined(MOZ_WIDGET_GTK)
    // We need to make sure that the size of the object frame does not
    // exceed the maximum size of X coordinates.  See bug #225357 for
    // more information.  In theory Gtk2 can handle large coordinates,
    // but underlying plugins can't.
    aMetrics.Height() = std::min(aPresContext->DevPixelsToAppUnits(INT16_MAX), aMetrics.Height());
    aMetrics.Width() = std::min(aPresContext->DevPixelsToAppUnits(INT16_MAX), aMetrics.Width());
#endif
  }

  // At this point, the width has an unconstrained value only if we have
  // nothing to go on (no width set, no information from the plugin, nothing).
  // Make up a number.
  if (aMetrics.Width() == NS_UNCONSTRAINEDSIZE) {
    aMetrics.Width() =
      (aReflowState.ComputedMinWidth() != NS_UNCONSTRAINEDSIZE) ?
        aReflowState.ComputedMinWidth() : 0;
  }

  // At this point, the height has an unconstrained value only in two cases:
  // a) We are in standards mode with percent heights and parent is auto-height
  // b) We have no height information at all.
  // In either case, we have to make up a number.
  if (aMetrics.Height() == NS_UNCONSTRAINEDSIZE) {
    aMetrics.Height() =
      (aReflowState.ComputedMinHeight() != NS_UNCONSTRAINEDSIZE) ?
        aReflowState.ComputedMinHeight() : 0;
  }

  // XXXbz don't add in the border and padding, because we screw up our
  // plugin's size and positioning if we do...  Eventually we _do_ want to
  // paint borders, though!  At that point, we will need to adjust the desired
  // size either here or in Reflow....  Further, we will need to fix Paint() to
  // call the superclass in all cases.
}

void
nsObjectFrame::Reflow(nsPresContext*           aPresContext,
                      nsHTMLReflowMetrics&     aMetrics,
                      const nsHTMLReflowState& aReflowState,
                      nsReflowStatus&          aStatus)
{
  DO_GLOBAL_REFLOW_COUNT("nsObjectFrame");
  DISPLAY_REFLOW(aPresContext, this, aReflowState, aMetrics, aStatus);

  // Get our desired size
  GetDesiredSize(aPresContext, aReflowState, aMetrics);
  aMetrics.SetOverflowAreasToDesiredBounds();
  FinishAndStoreOverflow(&aMetrics);

  // delay plugin instantiation until all children have
  // arrived. Otherwise there may be PARAMs or other stuff that the
  // plugin needs to see that haven't arrived yet.
  if (!GetContent()->IsDoneAddingChildren()) {
    aStatus = NS_FRAME_COMPLETE;
    return;
  }

  // if we are printing or print previewing, bail for now
  if (aPresContext->Medium() == nsGkAtoms::print) {
    aStatus = NS_FRAME_COMPLETE;
    return;
  }

  nsRect r(0, 0, aMetrics.Width(), aMetrics.Height());
  r.Deflate(aReflowState.ComputedPhysicalBorderPadding());

  if (mInnerView) {
    nsViewManager* vm = mInnerView->GetViewManager();
    vm->MoveViewTo(mInnerView, r.x, r.y);
    vm->ResizeView(mInnerView, nsRect(nsPoint(0, 0), r.Size()), true);
  }

  FixupWindow(r.Size());
  if (!mReflowCallbackPosted) {
    mReflowCallbackPosted = true;
    aPresContext->PresShell()->PostReflowCallback(this);
  }

  aStatus = NS_FRAME_COMPLETE;

  NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
}

///////////// nsIReflowCallback ///////////////

bool
nsObjectFrame::ReflowFinished()
{
  mReflowCallbackPosted = false;
  CallSetWindow();
  return true;
}

void
nsObjectFrame::ReflowCallbackCanceled()
{
  mReflowCallbackPosted = false;
}

void
nsObjectFrame::FixupWindow(const nsSize& aSize)
{
  nsPresContext* presContext = PresContext();

  if (!mInstanceOwner)
    return;

  NPWindow *window;
  mInstanceOwner->GetWindow(window);

  NS_ENSURE_TRUE_VOID(window);

#ifdef XP_MACOSX
  nsWeakFrame weakFrame(this);
  mInstanceOwner->FixUpPluginWindow(nsPluginInstanceOwner::ePluginPaintDisable);
  if (!weakFrame.IsAlive()) {
    return;
  }
#endif

  bool windowless = (window->type == NPWindowTypeDrawable);

  nsIntPoint origin = GetWindowOriginInPixels(windowless);

  // window must be in "display pixels"
  double scaleFactor = 1.0;
  if (NS_FAILED(mInstanceOwner->GetContentsScaleFactor(&scaleFactor))) {
    scaleFactor = 1.0;
  }
  int intScaleFactor = ceil(scaleFactor);
  window->x = origin.x / intScaleFactor;
  window->y = origin.y / intScaleFactor;
  window->width = presContext->AppUnitsToDevPixels(aSize.width) / intScaleFactor;
  window->height = presContext->AppUnitsToDevPixels(aSize.height) / intScaleFactor;

  // on the Mac we need to set the clipRect to { 0, 0, 0, 0 } for now. This will keep
  // us from drawing on screen until the widget is properly positioned, which will not
  // happen until we have finished the reflow process.
#ifdef XP_MACOSX
  window->clipRect.top = 0;
  window->clipRect.left = 0;
  window->clipRect.bottom = 0;
  window->clipRect.right = 0;
#else
  mInstanceOwner->UpdateWindowPositionAndClipRect(false);
#endif

  NotifyPluginReflowObservers();
}

nsresult
nsObjectFrame::CallSetWindow(bool aCheckIsHidden)
{
  NPWindow *win = nullptr;
 
  nsresult rv = NS_ERROR_FAILURE;
  nsRefPtr<nsNPAPIPluginInstance> pi;
  if (!mInstanceOwner ||
      NS_FAILED(rv = mInstanceOwner->GetInstance(getter_AddRefs(pi))) ||
      !pi ||
      NS_FAILED(rv = mInstanceOwner->GetWindow(win)) || 
      !win)
    return rv;

  nsPluginNativeWindow *window = (nsPluginNativeWindow *)win;
#ifdef XP_MACOSX
  nsWeakFrame weakFrame(this);
  mInstanceOwner->FixUpPluginWindow(nsPluginInstanceOwner::ePluginPaintDisable);
  if (!weakFrame.IsAlive()) {
    return NS_ERROR_NOT_AVAILABLE;
  }
#endif

  if (aCheckIsHidden && IsHidden())
    return NS_ERROR_FAILURE;

  // refresh the plugin port as well
  window->window = mInstanceOwner->GetPluginPortFromWidget();

  // Adjust plugin dimensions according to pixel snap results
  // and reduce amount of SetWindow calls
  nsPresContext* presContext = PresContext();
  nsRootPresContext* rootPC = presContext->GetRootPresContext();
  if (!rootPC)
    return NS_ERROR_FAILURE;
  int32_t appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
  nsIFrame* rootFrame = rootPC->PresShell()->FrameManager()->GetRootFrame();
  nsRect bounds = GetContentRectRelativeToSelf() + GetOffsetToCrossDoc(rootFrame);
  nsIntRect intBounds = bounds.ToNearestPixels(appUnitsPerDevPixel);

  // window must be in "display pixels"
  double scaleFactor = 1.0;
  if (NS_FAILED(mInstanceOwner->GetContentsScaleFactor(&scaleFactor))) {
    scaleFactor = 1.0;
  }
  size_t intScaleFactor = ceil(scaleFactor);
  window->x = intBounds.x / intScaleFactor;
  window->y = intBounds.y / intScaleFactor;
  window->width = intBounds.width / intScaleFactor;
  window->height = intBounds.height / intScaleFactor;

  // Calling SetWindow might destroy this frame. We need to use the instance
  // owner to clean up so hold a ref.
  nsRefPtr<nsPluginInstanceOwner> instanceOwnerRef(mInstanceOwner);

  // This will call pi->SetWindow and take care of window subclassing
  // if needed, see bug 132759. Calling SetWindow can destroy this frame
  // so check for that before doing anything else with this frame's memory.
  if (mInstanceOwner->UseAsyncRendering()) {
    rv = pi->AsyncSetWindow(window);
  }
  else {
    rv = window->CallSetWindow(pi);
  }

  instanceOwnerRef->ReleasePluginPort(window->window);

  return rv;
}

void
nsObjectFrame::RegisterPluginForGeometryUpdates()
{
  nsRootPresContext* rpc = PresContext()->GetRootPresContext();
  NS_ASSERTION(rpc, "We should have a root pres context!");
  if (mRootPresContextRegisteredWith == rpc || !rpc) {
    // Already registered with current root pres context,
    // or null root pres context...
    return;
  }
  if (mRootPresContextRegisteredWith && mRootPresContextRegisteredWith != rpc) {
    // Registered to some other root pres context. Unregister, and
    // re-register with our current one...
    UnregisterPluginForGeometryUpdates();
  }
  mRootPresContextRegisteredWith = rpc;
  mRootPresContextRegisteredWith->RegisterPluginForGeometryUpdates(mContent);
}

void
nsObjectFrame::UnregisterPluginForGeometryUpdates()
{
  if (!mRootPresContextRegisteredWith) {
    // Not registered...
    return;
  }
  mRootPresContextRegisteredWith->UnregisterPluginForGeometryUpdates(mContent);
  mRootPresContextRegisteredWith = nullptr;
}

void
nsObjectFrame::SetInstanceOwner(nsPluginInstanceOwner* aOwner)
{
  // The ownership model here is historically fuzzy. This should only be called
  // by nsPluginInstanceOwner when it is given a new frame, and
  // nsObjectLoadingContent should be arbitrating frame-ownership via its
  // HasNewFrame callback.
  mInstanceOwner = aOwner;
  if (mInstanceOwner) {
    return;
  }
  UnregisterPluginForGeometryUpdates();
  if (mWidget && mInnerView) {
    mInnerView->DetachWidgetEventHandler(mWidget);
    // Make sure the plugin is hidden in case an update of plugin geometry
    // hasn't happened since this plugin became hidden.
    nsIWidget* parent = mWidget->GetParent();
    if (parent) {
      nsTArray<nsIWidget::Configuration> configurations;
      nsIWidget::Configuration* configuration = configurations.AppendElement();
      configuration->mChild = mWidget;
      parent->ConfigureChildren(configurations);

      mWidget->Show(false);
      mWidget->Enable(false);
      mWidget->SetParent(nullptr);
    }
  }
}

bool
nsObjectFrame::IsFocusable(int32_t *aTabIndex, bool aWithMouse)
{
  if (aTabIndex)
    *aTabIndex = -1;
  return nsObjectFrameSuper::IsFocusable(aTabIndex, aWithMouse);
}

bool
nsObjectFrame::IsHidden(bool aCheckVisibilityStyle) const
{
  if (aCheckVisibilityStyle) {
    if (!StyleVisibility()->IsVisibleOrCollapsed())
      return true;    
  }

  // only <embed> tags support the HIDDEN attribute
  if (mContent->Tag() == nsGkAtoms::embed) {
    // Yes, these are really the kooky ways that you could tell 4.x
    // not to hide the <embed> once you'd put the 'hidden' attribute
    // on the tag...

    // HIDDEN w/ no attributes gets translated as we are hidden for
    // compatibility w/ 4.x and IE so we don't create a non-painting
    // widget in layout. See bug 188959.
    nsAutoString hidden;
    if (mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::hidden, hidden) &&
       (hidden.IsEmpty() ||
        (!hidden.LowerCaseEqualsLiteral("false") &&
         !hidden.LowerCaseEqualsLiteral("no") &&
         !hidden.LowerCaseEqualsLiteral("off")))) {
      return true;
    }
  }

  return false;
}

nsIntPoint nsObjectFrame::GetWindowOriginInPixels(bool aWindowless)
{
  nsView * parentWithView;
  nsPoint origin(0,0);

  GetOffsetFromView(origin, &parentWithView);

  // if it's windowless, let's make sure we have our origin set right
  // it may need to be corrected, like after scrolling
  if (aWindowless && parentWithView) {
    nsPoint offsetToWidget;
    parentWithView->GetNearestWidget(&offsetToWidget);
    origin += offsetToWidget;
  }
  origin += GetContentRectRelativeToSelf().TopLeft();

  return nsIntPoint(PresContext()->AppUnitsToDevPixels(origin.x),
                    PresContext()->AppUnitsToDevPixels(origin.y));
}

void
nsObjectFrame::DidReflow(nsPresContext*            aPresContext,
                         const nsHTMLReflowState*  aReflowState,
                         nsDidReflowStatus         aStatus)
{
  // Do this check before calling the superclass, as that clears
  // NS_FRAME_FIRST_REFLOW
  if (aStatus == nsDidReflowStatus::FINISHED &&
      (GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
    nsCOMPtr<nsIObjectLoadingContent> objContent(do_QueryInterface(mContent));
    NS_ASSERTION(objContent, "Why not an object loading content?");
    objContent->HasNewFrame(this);
  }

  nsObjectFrameSuper::DidReflow(aPresContext, aReflowState, aStatus);

  // The view is created hidden; once we have reflowed it and it has been
  // positioned then we show it.
  if (aStatus != nsDidReflowStatus::FINISHED)
    return;

  if (HasView()) {
    nsView* view = GetView();
    nsViewManager* vm = view->GetViewManager();
    if (vm)
      vm->SetViewVisibility(view, IsHidden() ? nsViewVisibility_kHide : nsViewVisibility_kShow);
  }
}

/* static */ void
nsObjectFrame::PaintPrintPlugin(nsIFrame* aFrame, nsRenderingContext* aCtx,
                                const nsRect& aDirtyRect, nsPoint aPt)
{
  nsPoint pt = aPt + aFrame->GetContentRectRelativeToSelf().TopLeft();
  nsRenderingContext::AutoPushTranslation translate(aCtx, pt);
  // FIXME - Bug 385435: Doesn't aDirtyRect need translating too?
  static_cast<nsObjectFrame*>(aFrame)->PrintPlugin(*aCtx, aDirtyRect);
}

/**
 * nsDisplayPluginReadback creates an active ReadbackLayer. The ReadbackLayer
 * obtains from the compositor the contents of the window underneath
 * the ReadbackLayer, which we then use as an opaque buffer for plugins to
 * asynchronously draw onto.
 */
class nsDisplayPluginReadback : public nsDisplayItem {
public:
  nsDisplayPluginReadback(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
    : nsDisplayItem(aBuilder, aFrame)
  {
    MOZ_COUNT_CTOR(nsDisplayPluginReadback);
  }
#ifdef NS_BUILD_REFCNT_LOGGING
  virtual ~nsDisplayPluginReadback() {
    MOZ_COUNT_DTOR(nsDisplayPluginReadback);
  }
#endif

  virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder,
                           bool* aSnap) MOZ_OVERRIDE;

  NS_DISPLAY_DECL_NAME("PluginReadback", TYPE_PLUGIN_READBACK)

  virtual already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
                                             LayerManager* aManager,
                                             const ContainerLayerParameters& aContainerParameters) MOZ_OVERRIDE
  {
    return static_cast<nsObjectFrame*>(mFrame)->BuildLayer(aBuilder, aManager, this, aContainerParameters);
  }

  virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
                                   LayerManager* aManager,
                                   const ContainerLayerParameters& aParameters) MOZ_OVERRIDE
  {
    return LAYER_ACTIVE;
  }
};

static nsRect
GetDisplayItemBounds(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem, nsIFrame* aFrame)
{
  // XXX For slightly more accurate region computations we should pixel-snap this
  return aFrame->GetContentRectRelativeToSelf() + aItem->ToReferenceFrame();
}

nsRect
nsDisplayPluginReadback::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
{
  *aSnap = false;
  return GetDisplayItemBounds(aBuilder, this, mFrame);
}

#ifdef MOZ_WIDGET_ANDROID

class nsDisplayPluginVideo : public nsDisplayItem {
public:
  nsDisplayPluginVideo(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsNPAPIPluginInstance::VideoInfo* aVideoInfo)
    : nsDisplayItem(aBuilder, aFrame), mVideoInfo(aVideoInfo)
  {
    MOZ_COUNT_CTOR(nsDisplayPluginVideo);
  }
#ifdef NS_BUILD_REFCNT_LOGGING
  virtual ~nsDisplayPluginVideo() {
    MOZ_COUNT_DTOR(nsDisplayPluginVideo);
  }
#endif

  virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder,
                           bool* aSnap) MOZ_OVERRIDE;

  NS_DISPLAY_DECL_NAME("PluginVideo", TYPE_PLUGIN_VIDEO)

  virtual already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
                                             LayerManager* aManager,
                                             const ContainerLayerParameters& aContainerParameters) MOZ_OVERRIDE
  {
    return static_cast<nsObjectFrame*>(mFrame)->BuildLayer(aBuilder, aManager, this, aContainerParameters);
  }

  virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
                                   LayerManager* aManager,
                                   const ContainerLayerParameters& aParameters) MOZ_OVERRIDE
  {
    return LAYER_ACTIVE;
  }

  nsNPAPIPluginInstance::VideoInfo* VideoInfo() { return mVideoInfo; }

private:
  nsNPAPIPluginInstance::VideoInfo* mVideoInfo;
};

nsRect
nsDisplayPluginVideo::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
{
  *aSnap = false;
  return GetDisplayItemBounds(aBuilder, this, mFrame);
}

#endif

nsRect
nsDisplayPlugin::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
{
  *aSnap = true;
  return GetDisplayItemBounds(aBuilder, this, mFrame);
}

void
nsDisplayPlugin::Paint(nsDisplayListBuilder* aBuilder,
                       nsRenderingContext* aCtx)
{
  nsObjectFrame* f = static_cast<nsObjectFrame*>(mFrame);
  bool snap;
  f->PaintPlugin(aBuilder, *aCtx, mVisibleRect, GetBounds(aBuilder, &snap));
}

bool
nsDisplayPlugin::ComputeVisibility(nsDisplayListBuilder* aBuilder,
                                   nsRegion* aVisibleRegion)
{
  if (aBuilder->IsForPluginGeometry()) {
    nsObjectFrame* f = static_cast<nsObjectFrame*>(mFrame);
    if (!aBuilder->IsInTransform() || f->IsPaintedByGecko()) {
      // Since transforms induce reference frames, we don't need to worry
      // about this method fluffing out due to non-rectilinear transforms.
      nsRect rAncestor = nsLayoutUtils::TransformFrameRectToAncestor(f,
          f->GetContentRectRelativeToSelf(), ReferenceFrame());
      nscoord appUnitsPerDevPixel =
        ReferenceFrame()->PresContext()->AppUnitsPerDevPixel();
      f->mNextConfigurationBounds = rAncestor.ToNearestPixels(appUnitsPerDevPixel);

      nsRegion visibleRegion;
      visibleRegion.And(*aVisibleRegion, GetClippedBounds(aBuilder));
      // Make visibleRegion relative to f
      visibleRegion.MoveBy(-ToReferenceFrame());

      f->mNextConfigurationClipRegion.Clear();
      nsRegionRectIterator iter(visibleRegion);
      for (const nsRect* r = iter.Next(); r; r = iter.Next()) {
        nsRect rAncestor =
          nsLayoutUtils::TransformFrameRectToAncestor(f, *r, ReferenceFrame());
        nsIntRect rPixels = rAncestor.ToNearestPixels(appUnitsPerDevPixel)
            - f->mNextConfigurationBounds.TopLeft();
        if (!rPixels.IsEmpty()) {
          f->mNextConfigurationClipRegion.AppendElement(rPixels);
        }
      }
    }

    if (f->mInnerView) {
      // This should produce basically the same rectangle (but not relative
      // to the root frame). We only call this here for the side-effect of
      // setting mViewToWidgetOffset on the view.
      f->mInnerView->CalcWidgetBounds(eWindowType_plugin);
    }
  }

  return nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion);
}

nsRegion
nsDisplayPlugin::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
                                 bool* aSnap)
{
  *aSnap = false;
  nsRegion result;
  nsObjectFrame* f = static_cast<nsObjectFrame*>(mFrame);
  if (!aBuilder->IsForPluginGeometry()) {
    nsIWidget* widget = f->GetWidget();
    if (widget) {
      // Be conservative and treat plugins with widgets as not opaque,
      // because that's simple and we might need the content under the widget
      // if the widget is unexpectedly clipped away. (As can happen when
      // chrome content over a plugin forces us to clip out the plugin for
      // security reasons.)
      // We shouldn't be repainting the content under plugins much anyway
      // since there generally shouldn't be anything to invalidate or paint
      // in ThebesLayers there.
  	  return result;
    }
  }

  if (f->IsOpaque()) {
    nsRect bounds = GetBounds(aBuilder, aSnap);
    if (aBuilder->IsForPluginGeometry() ||
        (f->GetPaintedRect(this) + ToReferenceFrame()).Contains(bounds)) {
      // We can treat this as opaque
      result = bounds;
    }
  }

  return result;
}

nsresult
nsObjectFrame::PluginEventNotifier::Run() {
  nsCOMPtr<nsIObserverService> obsSvc =
    mozilla::services::GetObserverService();
  obsSvc->NotifyObservers(nullptr, "plugin-changed-event", mEventType.get());
  return NS_OK;
}

void
nsObjectFrame::NotifyPluginReflowObservers()
{
  nsContentUtils::AddScriptRunner(new PluginEventNotifier(NS_LITERAL_STRING("reflow")));
}

void
nsObjectFrame::DidSetWidgetGeometry()
{
#if defined(XP_MACOSX)
  if (mInstanceOwner) {
    mInstanceOwner->FixUpPluginWindow(nsPluginInstanceOwner::ePluginPaintEnable);
  }
#else
  if (!mWidget && mInstanceOwner) {
    // UpdateWindowVisibility will notify the plugin of position changes
    // by updating the NPWindow and calling NPP_SetWindow/AsyncSetWindow.
    // We treat windowless plugins inside popups as always visible, since
    // plugins inside popups don't get valid mNextConfigurationBounds
    // set up.
    mInstanceOwner->UpdateWindowVisibility(
      nsLayoutUtils::IsPopup(nsLayoutUtils::GetDisplayRootFrame(this)) ||
      !mNextConfigurationBounds.IsEmpty());
  }
#endif
}

bool
nsObjectFrame::IsOpaque() const
{
#if defined(XP_MACOSX)
  // ???
  return false;
#elif defined(MOZ_WIDGET_ANDROID)
  // We don't know, so just assume transparent
  return false;
#else
  return !IsTransparentMode();
#endif
}

bool
nsObjectFrame::IsTransparentMode() const
{
#if defined(XP_MACOSX)
  // ???
  return false;
#else
  if (!mInstanceOwner)
    return false;

  NPWindow *window = nullptr;
  mInstanceOwner->GetWindow(window);
  if (!window) {
    return false;
  }

  if (window->type != NPWindowTypeDrawable)
    return false;

  nsresult rv;
  nsRefPtr<nsNPAPIPluginInstance> pi;
  rv = mInstanceOwner->GetInstance(getter_AddRefs(pi));
  if (NS_FAILED(rv) || !pi)
    return false;

  bool transparent = false;
  pi->IsTransparent(&transparent);
  return transparent;
#endif
}

void
nsObjectFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                const nsRect&           aDirtyRect,
                                const nsDisplayListSet& aLists)
{
  // XXX why are we painting collapsed object frames?
  if (!IsVisibleOrCollapsedForPainting(aBuilder))
    return;

  DisplayBorderBackgroundOutline(aBuilder, aLists);

  nsPresContext::nsPresContextType type = PresContext()->Type();

  // If we are painting in Print Preview do nothing....
  if (type == nsPresContext::eContext_PrintPreview)
    return;

  DO_GLOBAL_REFLOW_COUNT_DSP("nsObjectFrame");

#ifndef XP_MACOSX
  if (mWidget && aBuilder->IsInTransform()) {
    // Windowed plugins should not be rendered inside a transform.
    return;
  }
#endif

  if (aBuilder->IsForPainting() && mInstanceOwner && mInstanceOwner->UseAsyncRendering()) {
    NPWindow* window = nullptr;
    mInstanceOwner->GetWindow(window);
    bool isVisible = window && window->width > 0 && window->height > 0;
    if (isVisible && aBuilder->ShouldSyncDecodeImages()) {
  #ifndef XP_MACOSX
      mInstanceOwner->UpdateWindowVisibility(true);
  #endif
    }

    mInstanceOwner->NotifyPaintWaiter(aBuilder);
  }

  DisplayListClipState::AutoClipContainingBlockDescendantsToContentBox
    clip(aBuilder, this);

  // determine if we are printing
  if (type == nsPresContext::eContext_Print) {
    aLists.Content()->AppendNewToTop(new (aBuilder)
      nsDisplayGeneric(aBuilder, this, PaintPrintPlugin, "PrintPlugin",
                       nsDisplayItem::TYPE_PRINT_PLUGIN));
  } else {
    LayerState state = GetLayerState(aBuilder, nullptr);
    if (state == LAYER_INACTIVE &&
        nsDisplayItem::ForceActiveLayers()) {
      state = LAYER_ACTIVE;
    }
    // We don't need this on Android, and it just confuses things
#if !MOZ_WIDGET_ANDROID
    if (aBuilder->IsPaintingToWindow() &&
        state == LAYER_ACTIVE &&
        IsTransparentMode()) {
      aLists.Content()->AppendNewToTop(new (aBuilder)
        nsDisplayPluginReadback(aBuilder, this));
    }
#endif

#if MOZ_WIDGET_ANDROID
    if (aBuilder->IsPaintingToWindow() &&
        state == LAYER_ACTIVE) {

      nsTArray<nsNPAPIPluginInstance::VideoInfo*> videos;
      mInstanceOwner->GetVideos(videos);

      for (uint32_t i = 0; i < videos.Length(); i++) {
        aLists.Content()->AppendNewToTop(new (aBuilder)
          nsDisplayPluginVideo(aBuilder, this, videos[i]));
      }
    }
#endif

    aLists.Content()->AppendNewToTop(new (aBuilder)
      nsDisplayPlugin(aBuilder, this));
  }
}

void
nsObjectFrame::PrintPlugin(nsRenderingContext& aRenderingContext,
                           const nsRect& aDirtyRect)
{
  nsCOMPtr<nsIObjectLoadingContent> obj(do_QueryInterface(mContent));
  if (!obj)
    return;

  nsIFrame* frame = nullptr;
  obj->GetPrintFrame(&frame);
  if (!frame)
    return;

  nsPresContext* presContext = PresContext();
  // make sure this is REALLY an nsIObjectFrame
  // we may need to go through the children to get it
  nsIObjectFrame* objectFrame = do_QueryFrame(frame);
  if (!objectFrame)
    objectFrame = GetNextObjectFrame(presContext,frame);
  if (!objectFrame)
    return;

  // finally we can get our plugin instance
  nsRefPtr<nsNPAPIPluginInstance> pi;
  if (NS_FAILED(objectFrame->GetPluginInstance(getter_AddRefs(pi))) || !pi)
    return;

  // now we need to setup the correct location for printing
  NPWindow window;
  window.window = nullptr;

  // prepare embedded mode printing struct
  NPPrint npprint;
  npprint.mode = NP_EMBED;

  // we need to find out if we are windowless or not
  bool windowless = false;
  pi->IsWindowless(&windowless);
  window.type = windowless ? NPWindowTypeDrawable : NPWindowTypeWindow;

  window.clipRect.bottom = 0; window.clipRect.top = 0;
  window.clipRect.left = 0; window.clipRect.right = 0;

// platform specific printing code
#if defined(XP_MACOSX) && !defined(__LP64__)
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
  // Don't use this code if any of the QuickDraw APIs it currently requires
  // are missing (as they probably will be on OS X 10.8 and up).
  if (!&::SetRect || !&::NewGWorldFromPtr || !&::DisposeGWorld) {
    NS_WARNING("Cannot print plugin -- required QuickDraw APIs are missing!");
    return;
  }

  nsSize contentSize = GetContentRectRelativeToSelf().Size();
  window.x = 0;
  window.y = 0;
  window.width = presContext->AppUnitsToDevPixels(contentSize.width);
  window.height = presContext->AppUnitsToDevPixels(contentSize.height);

  gfxContext *ctx = aRenderingContext.ThebesContext();
  if (!ctx)
    return;
  gfxContextAutoSaveRestore save(ctx);

  ctx->NewPath();

  gfxRect rect(window.x, window.y, window.width, window.height);

  ctx->Rectangle(rect);
  ctx->Clip();

  gfxQuartzNativeDrawing nativeDraw(ctx, rect);
  CGContextRef cgContext = nativeDraw.BeginNativeDrawing();
  if (!cgContext) {
    nativeDraw.EndNativeDrawing();
    return;
  }

  window.clipRect.right = window.width;
  window.clipRect.bottom = window.height;
  window.type = NPWindowTypeDrawable;

  ::Rect gwBounds;
  ::SetRect(&gwBounds, 0, 0, window.width, window.height);

  nsTArray<char> buffer(window.width * window.height * 4);
  CGColorSpaceRef cspace = ::CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
  if (!cspace) {
    nativeDraw.EndNativeDrawing();
    return;
  }
  CGContextRef cgBuffer =
    ::CGBitmapContextCreate(buffer.Elements(), 
                            window.width, window.height, 8, window.width * 4,
                            cspace, kCGBitmapByteOrder32Big | kCGImageAlphaPremultipliedFirst);
  ::CGColorSpaceRelease(cspace);
  if (!cgBuffer) {
    nativeDraw.EndNativeDrawing();
    return;
  }
  GWorldPtr gWorld;
  if (::NewGWorldFromPtr(&gWorld, k32ARGBPixelFormat, &gwBounds,
                         nullptr, nullptr, 0,
                         buffer.Elements(), window.width * 4) != noErr) {
    ::CGContextRelease(cgBuffer);
    nativeDraw.EndNativeDrawing();
    return;
  }

  window.clipRect.right = window.width;
  window.clipRect.bottom = window.height;
  window.type = NPWindowTypeDrawable;
  // Setting nsPluginPrint/NPPrint.print.embedPrint.window.window to
  // &GWorldPtr and nsPluginPrint/NPPrint.print.embedPrint.platformPrint to
  // GWorldPtr isn't any kind of standard (it's not documented anywhere).
  // But that's what WebKit does.  And it's what the Flash plugin (apparently
  // the only NPAPI plugin on OS X to support printing) seems to expect.  So
  // we do the same.  The Flash plugin uses the CoreGraphics drawing mode.
  // But a GWorldPtr should be usable in either CoreGraphics or QuickDraw
  // drawing mode.  See bug 191046.
  window.window = &gWorld;
  npprint.print.embedPrint.platformPrint = gWorld;
  npprint.print.embedPrint.window = window;
  pi->Print(&npprint);

  ::CGContextTranslateCTM(cgContext, 0.0f, float(window.height));
  ::CGContextScaleCTM(cgContext, 1.0f, -1.0f);
  CGImageRef image = ::CGBitmapContextCreateImage(cgBuffer);
  if (!image) {
    ::CGContextRestoreGState(cgContext);
    ::CGContextRelease(cgBuffer);
    ::DisposeGWorld(gWorld);
    nativeDraw.EndNativeDrawing();
    return;
  }
  ::CGContextDrawImage(cgContext,
                       ::CGRectMake(0, 0, window.width, window.height),
                       image);
  ::CGImageRelease(image);
  ::CGContextRelease(cgBuffer);

  ::DisposeGWorld(gWorld);

  nativeDraw.EndNativeDrawing();
#pragma clang diagnostic warning "-Wdeprecated-declarations"
#elif defined(XP_UNIX)

  /* XXX this just flat-out doesn't work in a thebes world --
   * RenderEPS is a no-op.  So don't bother to do any work here.
   */
  (void)window;
  (void)npprint;

#elif defined(XP_WIN)

  /* On Windows, we use the win32 printing surface to print.  This, in
   * turn, uses the Cairo paginated surface, which in turn uses the
   * meta surface to record all operations and then play them back.
   * This doesn't work too well for plugins, because if plugins render
   * directly into the DC, the meta surface won't have any knowledge
   * of them, and so at the end when it actually does the replay step,
   * it'll fill the background with white and draw over whatever was
   * rendered before.
   *
   * So, to avoid this, we use PushGroup, which creates a new windows
   * surface, the plugin renders to that, and then we use normal
   * cairo methods to composite that in such that it's recorded using the
   * meta surface.
   */

  /* we'll already be translated into the right spot by gfxWindowsNativeDrawing */
  nsSize contentSize = GetContentRectRelativeToSelf().Size();
  window.x = 0;
  window.y = 0;
  window.width = presContext->AppUnitsToDevPixels(contentSize.width);
  window.height = presContext->AppUnitsToDevPixels(contentSize.height);

  gfxContext *ctx = aRenderingContext.ThebesContext();

  ctx->Save();

  /* Make sure plugins don't do any damage outside of where they're supposed to */
  ctx->NewPath();
  gfxRect r(window.x, window.y, window.width, window.height);
  ctx->Rectangle(r);
  ctx->Clip();

  gfxWindowsNativeDrawing nativeDraw(ctx, r);
  do {
    HDC dc = nativeDraw.BeginNativeDrawing();
    if (!dc)
      return;

    // XXX don't we need to call nativeDraw.TransformToNativeRect here?
    npprint.print.embedPrint.platformPrint = dc;
    npprint.print.embedPrint.window = window;
    // send off print info to plugin
    pi->Print(&npprint);

    nativeDraw.EndNativeDrawing();
  } while (nativeDraw.ShouldRenderAgain());
  nativeDraw.PaintToContext();

  ctx->Restore();
#endif

  // XXX Nav 4.x always sent a SetWindow call after print. Should we do the same?
  // XXX Calling DidReflow here makes no sense!!!
  nsDidReflowStatus status = nsDidReflowStatus::FINISHED; // should we use a special status?
  frame->DidReflow(presContext,
                   nullptr, status);  // DidReflow will take care of it
}

nsRect
nsObjectFrame::GetPaintedRect(nsDisplayPlugin* aItem)
{
  if (!mInstanceOwner)
    return nsRect();
  nsRect r = GetContentRectRelativeToSelf();
  if (!mInstanceOwner->UseAsyncRendering())
    return r;

  nsIntSize size = mInstanceOwner->GetCurrentImageSize();
  nsPresContext* pc = PresContext();
  r.IntersectRect(r, nsRect(0, 0, pc->DevPixelsToAppUnits(size.width),
                                  pc->DevPixelsToAppUnits(size.height)));
  return r;
}

LayerState
nsObjectFrame::GetLayerState(nsDisplayListBuilder* aBuilder,
                             LayerManager* aManager)
{
  if (!mInstanceOwner)
    return LAYER_NONE;

#ifdef MOZ_WIDGET_ANDROID
  // We always want a layer on Honeycomb and later
  if (AndroidBridge::Bridge()->GetAPIVersion() >= 11)
    return LAYER_ACTIVE;
#endif

  if (!mInstanceOwner->UseAsyncRendering()) {
    return LAYER_NONE;
  }

  return LAYER_ACTIVE;
}

already_AddRefed<Layer>
nsObjectFrame::BuildLayer(nsDisplayListBuilder* aBuilder,
                          LayerManager* aManager,
                          nsDisplayItem* aItem,
                          const ContainerLayerParameters& aContainerParameters)
{
  if (!mInstanceOwner)
    return nullptr;

  NPWindow* window = nullptr;
  mInstanceOwner->GetWindow(window);
  if (!window)
    return nullptr;

  if (window->width <= 0 || window->height <= 0)
    return nullptr;

  // window is in "display pixels", but size needs to be in device pixels
  double scaleFactor = 1.0;
  if (NS_FAILED(mInstanceOwner->GetContentsScaleFactor(&scaleFactor))) {
    scaleFactor = 1.0;
  }
  int intScaleFactor = ceil(scaleFactor);
  IntSize size(window->width * intScaleFactor, window->height * intScaleFactor);

  nsRect area = GetContentRectRelativeToSelf() + aItem->ToReferenceFrame();
  gfxRect r = nsLayoutUtils::RectToGfxRect(area, PresContext()->AppUnitsPerDevPixel());
  // to provide crisper and faster drawing.
  r.Round();
  nsRefPtr<Layer> layer =
    (aManager->GetLayerBuilder()->GetLeafLayerFor(aBuilder, aItem));

  if (aItem->GetType() == nsDisplayItem::TYPE_PLUGIN) {
    // Create image
    nsRefPtr<ImageContainer> container = mInstanceOwner->GetImageContainer();
    if (!container) {
      // This can occur if our instance is gone.
      return nullptr;
    }

    if (!layer) {
      mInstanceOwner->NotifyPaintWaiter(aBuilder);
      // Initialize ImageLayer
      layer = aManager->CreateImageLayer();
      if (!layer)
        return nullptr;
    }

    NS_ASSERTION(layer->GetType() == Layer::TYPE_IMAGE, "Bad layer type");
    ImageLayer* imglayer = static_cast<ImageLayer*>(layer.get());
#ifdef XP_MACOSX
    if (!mInstanceOwner->UseAsyncRendering()) {
      mInstanceOwner->DoCocoaEventDrawRect(r, nullptr);
    }
#endif

    imglayer->SetScaleToSize(size, ScaleMode::STRETCH);
    imglayer->SetContainer(container);
    GraphicsFilter filter =
      nsLayoutUtils::GetGraphicsFilterForFrame(this);
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
    if (!aManager->IsCompositingCheap()) {
      // Pixman just horrible with bilinear filter scaling
      filter = GraphicsFilter::FILTER_NEAREST;
    }
#endif
    imglayer->SetFilter(filter);

    layer->SetContentFlags(IsOpaque() ? Layer::CONTENT_OPAQUE : 0);
#ifdef MOZ_WIDGET_ANDROID
  } else if (aItem->GetType() == nsDisplayItem::TYPE_PLUGIN_VIDEO) {
    nsDisplayPluginVideo* videoItem = reinterpret_cast<nsDisplayPluginVideo*>(aItem);
    nsNPAPIPluginInstance::VideoInfo* videoInfo = videoItem->VideoInfo();

    nsRefPtr<ImageContainer> container = mInstanceOwner->GetImageContainerForVideo(videoInfo);
    if (!container)
      return nullptr;

    if (!layer) {
      // Initialize ImageLayer
      layer = aManager->CreateImageLayer();
      if (!layer)
        return nullptr;
    }

    ImageLayer* imglayer = static_cast<ImageLayer*>(layer.get());
    imglayer->SetContainer(container);

    layer->SetContentFlags(IsOpaque() ? Layer::CONTENT_OPAQUE : 0);

    // Set the offset and size according to the video dimensions
    r.MoveBy(videoInfo->mDimensions.TopLeft());
    size.width = videoInfo->mDimensions.width;
    size.height = videoInfo->mDimensions.height;
#endif
  } else {
    NS_ASSERTION(aItem->GetType() == nsDisplayItem::TYPE_PLUGIN_READBACK,
                 "Unknown item type");
    NS_ABORT_IF_FALSE(!IsOpaque(), "Opaque plugins don't use backgrounds");

    if (!layer) {
      layer = aManager->CreateReadbackLayer();
      if (!layer)
        return nullptr;
    }
    NS_ASSERTION(layer->GetType() == Layer::TYPE_READBACK, "Bad layer type");

    ReadbackLayer* readback = static_cast<ReadbackLayer*>(layer.get());
    if (readback->GetSize() != ThebesIntSize(size)) {
      // This will destroy any old background sink and notify us that the
      // background is now unknown
      readback->SetSink(nullptr);
      readback->SetSize(ThebesIntSize(size));

      if (mBackgroundSink) {
        // Maybe we still have a background sink associated with another
        // readback layer that wasn't recycled for some reason? Unhook it
        // now so that if this frame goes away, it doesn't have a dangling
        // reference to us.
        mBackgroundSink->Destroy();
      }
      mBackgroundSink =
        new PluginBackgroundSink(this,
                                 readback->AllocateSequenceNumber());
      readback->SetSink(mBackgroundSink);
      // The layer has taken ownership of our sink. When either the sink dies
      // or the frame dies, the connection from the surviving object is nulled out.
    }
  }

  // Set a transform on the layer to draw the plugin in the right place
  Matrix transform;
  gfxPoint p = r.TopLeft() + aContainerParameters.mOffset;
  transform.Translate(p.x, p.y);

  layer->SetBaseTransform(Matrix4x4::From2D(transform));
  return layer.forget();
}

void
nsObjectFrame::PaintPlugin(nsDisplayListBuilder* aBuilder,
                           nsRenderingContext& aRenderingContext,
                           const nsRect& aDirtyRect, const nsRect& aPluginRect)
{
#if defined(MOZ_WIDGET_ANDROID)
  if (mInstanceOwner) {
    gfxRect frameGfxRect =
      PresContext()->AppUnitsToGfxUnits(aPluginRect);
    gfxRect dirtyGfxRect =
      PresContext()->AppUnitsToGfxUnits(aDirtyRect);

    gfxContext* ctx = aRenderingContext.ThebesContext();

    mInstanceOwner->Paint(ctx, frameGfxRect, dirtyGfxRect);
    return;
  }
#endif

  // Screen painting code
#if defined(XP_MACOSX)
  // delegate all painting to the plugin instance.
  if (mInstanceOwner) {
    if (mInstanceOwner->GetDrawingModel() == NPDrawingModelCoreGraphics ||
        mInstanceOwner->GetDrawingModel() == NPDrawingModelCoreAnimation ||
        mInstanceOwner->GetDrawingModel() == 
                                  NPDrawingModelInvalidatingCoreAnimation) {
      int32_t appUnitsPerDevPixel = PresContext()->AppUnitsPerDevPixel();
      // Clip to the content area where the plugin should be drawn. If
      // we don't do this, the plugin can draw outside its bounds.
      nsIntRect contentPixels = aPluginRect.ToNearestPixels(appUnitsPerDevPixel);
      nsIntRect dirtyPixels = aDirtyRect.ToOutsidePixels(appUnitsPerDevPixel);
      nsIntRect clipPixels;
      clipPixels.IntersectRect(contentPixels, dirtyPixels);

      // Don't invoke the drawing code if the clip is empty.
      if (clipPixels.IsEmpty())
        return;

      gfxRect nativeClipRect(clipPixels.x, clipPixels.y,
                             clipPixels.width, clipPixels.height);
      gfxContext* ctx = aRenderingContext.ThebesContext();

      gfxContextAutoSaveRestore save(ctx);
      ctx->NewPath();
      ctx->Rectangle(nativeClipRect);
      ctx->Clip();
      gfxPoint offset(contentPixels.x, contentPixels.y);
      ctx->Translate(offset);

      gfxQuartzNativeDrawing nativeDrawing(ctx, nativeClipRect - offset);

      CGContextRef cgContext = nativeDrawing.BeginNativeDrawing();
      if (!cgContext) {
        NS_WARNING("null CGContextRef during PaintPlugin");
        return;
      }

      nsRefPtr<nsNPAPIPluginInstance> inst;
      GetPluginInstance(getter_AddRefs(inst));
      if (!inst) {
        NS_WARNING("null plugin instance during PaintPlugin");
        nativeDrawing.EndNativeDrawing();
        return;
      }
      NPWindow* window;
      mInstanceOwner->GetWindow(window);
      if (!window) {
        NS_WARNING("null plugin window during PaintPlugin");
        nativeDrawing.EndNativeDrawing();
        return;
      }
      NP_CGContext* cgPluginPortCopy =
                static_cast<NP_CGContext*>(mInstanceOwner->GetPluginPortCopy());
      if (!cgPluginPortCopy) {
        NS_WARNING("null plugin port copy during PaintPlugin");
        nativeDrawing.EndNativeDrawing();
        return;
      }

      mInstanceOwner->BeginCGPaint();
      if (mInstanceOwner->GetDrawingModel() == NPDrawingModelCoreAnimation ||
          mInstanceOwner->GetDrawingModel() == 
                                   NPDrawingModelInvalidatingCoreAnimation) {
        // CoreAnimation is updated, render the layer and perform a readback.
        mInstanceOwner->RenderCoreAnimation(cgContext, window->width, window->height);
      } else {
        mInstanceOwner->Paint(nativeClipRect - offset, cgContext);
      }
      mInstanceOwner->EndCGPaint();

      nativeDrawing.EndNativeDrawing();
    } else {
      // FIXME - Bug 385435: Doesn't aDirtyRect need translating too?
      nsRenderingContext::AutoPushTranslation
        translate(&aRenderingContext, aPluginRect.TopLeft());

      // this rect is used only in the CoreGraphics drawing model
      gfxRect tmpRect(0, 0, 0, 0);
      mInstanceOwner->Paint(tmpRect, nullptr);
    }
  }
#elif defined(MOZ_X11)
  if (mInstanceOwner) {
    NPWindow *window;
    mInstanceOwner->GetWindow(window);
    if (window->type == NPWindowTypeDrawable) {
      gfxRect frameGfxRect =
        PresContext()->AppUnitsToGfxUnits(aPluginRect);
      gfxRect dirtyGfxRect =
        PresContext()->AppUnitsToGfxUnits(aDirtyRect);
      gfxContext* ctx = aRenderingContext.ThebesContext();

      mInstanceOwner->Paint(ctx, frameGfxRect, dirtyGfxRect);
    }
  }
#elif defined(XP_WIN)
  nsRefPtr<nsNPAPIPluginInstance> inst;
  GetPluginInstance(getter_AddRefs(inst));
  if (inst) {
    gfxRect frameGfxRect =
      PresContext()->AppUnitsToGfxUnits(aPluginRect);
    gfxRect dirtyGfxRect =
      PresContext()->AppUnitsToGfxUnits(aDirtyRect);
    gfxContext *ctx = aRenderingContext.ThebesContext();
    gfxMatrix currentMatrix = ctx->CurrentMatrix();

    if (ctx->UserToDevicePixelSnapped(frameGfxRect, false)) {
      dirtyGfxRect = ctx->UserToDevice(dirtyGfxRect);
      ctx->IdentityMatrix();
    }
    dirtyGfxRect.RoundOut();

    // Look if it's windowless
    NPWindow *window;
    mInstanceOwner->GetWindow(window);

    if (window->type == NPWindowTypeDrawable) {
      // the offset of the DC
      nsPoint origin;

      gfxWindowsNativeDrawing nativeDraw(ctx, frameGfxRect);
      if (nativeDraw.IsDoublePass()) {
        // OOP plugin specific: let the shim know before we paint if we are doing a
        // double pass render. If this plugin isn't oop, the register window message
        // will be ignored.
        NPEvent pluginEvent;
        pluginEvent.event = plugins::DoublePassRenderingEvent();
        pluginEvent.wParam = 0;
        pluginEvent.lParam = 0;
        if (pluginEvent.event)
          inst->HandleEvent(&pluginEvent, nullptr);
      }
      do {
        HDC hdc = nativeDraw.BeginNativeDrawing();
        if (!hdc)
          return;

        RECT dest;
        nativeDraw.TransformToNativeRect(frameGfxRect, dest);
        RECT dirty;
        nativeDraw.TransformToNativeRect(dirtyGfxRect, dirty);

        window->window = hdc;
        window->x = dest.left;
        window->y = dest.top;
        window->clipRect.left = 0;
        window->clipRect.top = 0;
        // if we're painting, we're visible.
        window->clipRect.right = window->width;
        window->clipRect.bottom = window->height;

        // Windowless plugins on windows need a special event to update their location,
        // see bug 135737.
        //
        // bug 271442: note, the rectangle we send is now purely the bounds of the plugin
        // relative to the window it is contained in, which is useful for the plugin to
        // correctly translate mouse coordinates.
        //
        // this does not mesh with the comments for bug 135737 which imply that the rectangle
        // must be clipped in some way to prevent the plugin attempting to paint over areas
        // it shouldn't.
        //
        // since the two uses of the rectangle are mutually exclusive in some cases, and
        // since I don't see any incorrect painting (at least with Flash and ViewPoint -
        // the originator of bug 135737), it seems that windowless plugins are not relying
        // on information here for clipping their drawing, and we can safely use this message
        // to tell the plugin exactly where it is in all cases.

        nsIntPoint origin = GetWindowOriginInPixels(true);
        nsIntRect winlessRect = nsIntRect(origin, nsIntSize(window->width, window->height));

        if (!mWindowlessRect.IsEqualEdges(winlessRect)) {
          mWindowlessRect = winlessRect;

          WINDOWPOS winpos;
          memset(&winpos, 0, sizeof(winpos));
          winpos.x = mWindowlessRect.x;
          winpos.y = mWindowlessRect.y;
          winpos.cx = mWindowlessRect.width;
          winpos.cy = mWindowlessRect.height;

          // finally, update the plugin by sending it a WM_WINDOWPOSCHANGED event
          NPEvent pluginEvent;
          pluginEvent.event = WM_WINDOWPOSCHANGED;
          pluginEvent.wParam = 0;
          pluginEvent.lParam = (LPARAM)&winpos;
          inst->HandleEvent(&pluginEvent, nullptr);
        }

        inst->SetWindow(window);

        mInstanceOwner->Paint(dirty, hdc);
        nativeDraw.EndNativeDrawing();
      } while (nativeDraw.ShouldRenderAgain());
      nativeDraw.PaintToContext();
    }

    ctx->SetMatrix(currentMatrix);
  }
#endif
}

nsresult
nsObjectFrame::HandleEvent(nsPresContext* aPresContext,
                           WidgetGUIEvent* anEvent,
                           nsEventStatus* anEventStatus)
{
  NS_ENSURE_ARG_POINTER(anEvent);
  NS_ENSURE_ARG_POINTER(anEventStatus);
  nsresult rv = NS_OK;

  if (!mInstanceOwner)
    return NS_ERROR_NULL_POINTER;

  mInstanceOwner->ConsiderNewEventloopNestingLevel();

  if (anEvent->message == NS_PLUGIN_ACTIVATE) {
    nsIFocusManager* fm = nsFocusManager::GetFocusManager();
    nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(GetContent());
    if (fm && elem)
      return fm->SetFocus(elem, 0);
  }
  else if (anEvent->message == NS_PLUGIN_FOCUS) {
    nsIFocusManager* fm = nsFocusManager::GetFocusManager();
    if (fm)
      return fm->FocusPlugin(GetContent());
  }

#ifdef XP_MACOSX
  if (anEvent->message == NS_PLUGIN_RESOLUTION_CHANGED) {
    double scaleFactor = 1.0;
    mInstanceOwner->GetContentsScaleFactor(&scaleFactor);
    mInstanceOwner->ContentsScaleFactorChanged(scaleFactor);
    return NS_OK;
  }
#endif

  if (mInstanceOwner->SendNativeEvents() &&
      anEvent->IsNativeEventDelivererForPlugin()) {
    *anEventStatus = mInstanceOwner->ProcessEvent(*anEvent);
    // Due to plugin code reentering Gecko, this frame may be dead at this
    // point.
    return rv;
  }

#ifdef XP_WIN
  rv = nsObjectFrameSuper::HandleEvent(aPresContext, anEvent, anEventStatus);
  return rv;
#endif

#ifdef XP_MACOSX
  // we want to process some native mouse events in the cocoa event model
  if ((anEvent->message == NS_MOUSE_ENTER ||
       anEvent->message == NS_WHEEL_WHEEL) &&
      mInstanceOwner->GetEventModel() == NPEventModelCocoa) {
    *anEventStatus = mInstanceOwner->ProcessEvent(*anEvent);
    // Due to plugin code reentering Gecko, this frame may be dead at this
    // point.
    return rv;
  }

  // These two calls to nsIPresShell::SetCapturingContext() (on mouse-down
  // and mouse-up) are needed to make the routing of mouse events while
  // dragging conform to standard OS X practice, and to the Cocoa NPAPI spec.
  // See bug 525078 and bug 909678.
  if (anEvent->message == NS_MOUSE_BUTTON_DOWN) {
    nsIPresShell::SetCapturingContent(GetContent(), CAPTURE_IGNOREALLOWED);
  }
#endif

  rv = nsObjectFrameSuper::HandleEvent(aPresContext, anEvent, anEventStatus);

  // We need to be careful from this point because the call to
  // nsObjectFrameSuper::HandleEvent() might have killed us.

#ifdef XP_MACOSX
  if (anEvent->message == NS_MOUSE_BUTTON_UP) {
    nsIPresShell::SetCapturingContent(nullptr, 0);
  }
#endif

  return rv;
}

nsresult
nsObjectFrame::GetPluginInstance(nsNPAPIPluginInstance** aPluginInstance)
{
  *aPluginInstance = nullptr;

  if (!mInstanceOwner) {
    return NS_OK;
  }

  return mInstanceOwner->GetInstance(aPluginInstance);
}

nsresult
nsObjectFrame::GetCursor(const nsPoint& aPoint, nsIFrame::Cursor& aCursor)
{
  if (!mInstanceOwner) {
    return NS_ERROR_FAILURE;
  }

  nsRefPtr<nsNPAPIPluginInstance> inst;
  mInstanceOwner->GetInstance(getter_AddRefs(inst));
  if (!inst) {
    return NS_ERROR_FAILURE;
  }

  bool useDOMCursor = static_cast<nsNPAPIPluginInstance*>(inst.get())->UsesDOMForCursor();
  if (!useDOMCursor) {
    return NS_ERROR_FAILURE;
  }

  return nsObjectFrameSuper::GetCursor(aPoint, aCursor);
}

void
nsObjectFrame::SetIsDocumentActive(bool aIsActive)
{
#ifndef XP_MACOSX
  if (mInstanceOwner) {
    mInstanceOwner->UpdateDocumentActiveState(aIsActive);
  }
#endif
}

// static
nsIObjectFrame *
nsObjectFrame::GetNextObjectFrame(nsPresContext* aPresContext, nsIFrame* aRoot)
{
  nsIFrame* child = aRoot->GetFirstPrincipalChild();

  while (child) {
    nsIObjectFrame* outFrame = do_QueryFrame(child);
    if (outFrame) {
      nsRefPtr<nsNPAPIPluginInstance> pi;
      outFrame->GetPluginInstance(getter_AddRefs(pi));  // make sure we have a REAL plugin
      if (pi)
        return outFrame;
    }

    outFrame = GetNextObjectFrame(aPresContext, child);
    if (outFrame)
      return outFrame;
    child = child->GetNextSibling();
  }

  return nullptr;
}

/*static*/ void
nsObjectFrame::BeginSwapDocShells(nsISupports* aSupports, void*)
{
  NS_PRECONDITION(aSupports, "");
  nsCOMPtr<nsIContent> content(do_QueryInterface(aSupports));
  if (!content) {
    return;
  }

  // This function is called from a document content enumerator so we need
  // to filter out the nsObjectFrames and ignore the rest.
  nsIObjectFrame* obj = do_QueryFrame(content->GetPrimaryFrame());
  if (!obj)
    return;

  nsObjectFrame* objectFrame = static_cast<nsObjectFrame*>(obj);
  NS_ASSERTION(!objectFrame->mWidget || objectFrame->mWidget->GetParent(),
               "Plugin windows must not be toplevel");
  objectFrame->UnregisterPluginForGeometryUpdates();
}

/*static*/ void
nsObjectFrame::EndSwapDocShells(nsISupports* aSupports, void*)
{
  NS_PRECONDITION(aSupports, "");
  nsCOMPtr<nsIContent> content(do_QueryInterface(aSupports));
  if (!content) {
    return;
  }

  // This function is called from a document content enumerator so we need
  // to filter out the nsObjectFrames and ignore the rest.
  nsIObjectFrame* obj = do_QueryFrame(content->GetPrimaryFrame());
  if (!obj)
    return;

  nsObjectFrame* objectFrame = static_cast<nsObjectFrame*>(obj);
  nsRootPresContext* rootPC = objectFrame->PresContext()->GetRootPresContext();
  NS_ASSERTION(rootPC, "unable to register the plugin frame");
  nsIWidget* widget = objectFrame->mWidget;
  if (widget) {
    // Reparent the widget.
    nsIWidget* parent =
      rootPC->PresShell()->GetRootFrame()->GetNearestWidget();
    widget->SetParent(parent);
    nsWeakFrame weakFrame(objectFrame);
    objectFrame->CallSetWindow();
    if (!weakFrame.IsAlive()) {
      return;
    }
  }

#ifdef XP_MACOSX
  if (objectFrame->mWidget) {
    objectFrame->RegisterPluginForGeometryUpdates();
  }
#else
  objectFrame->RegisterPluginForGeometryUpdates();
#endif
}

nsIFrame*
NS_NewObjectFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
  return new (aPresShell) nsObjectFrame(aContext);
}

bool
nsObjectFrame::IsPaintedByGecko() const
{
#ifdef XP_MACOSX
  return true;
#else
  return !mWidget;
#endif
}

NS_IMPL_FRAMEARENA_HELPERS(nsObjectFrame)