The Tor Browser: content/base/src/nsDOMCaretPosition.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #include "nsDOMCaretPosition.h"

     7 #include "mozilla/dom/CaretPositionBinding.h"

     8 #include "mozilla/dom/DOMRect.h"

     9 #include "nsRange.h"

    11 using namespace mozilla::dom;

    13 nsDOMCaretPosition::nsDOMCaretPosition(nsINode* aNode, uint32_t aOffset)

    14   : mOffset(aOffset), mOffsetNode(aNode), mAnonymousContentNode(nullptr)

    15 {

    16   SetIsDOMBinding();

    17 }

    19 nsDOMCaretPosition::~nsDOMCaretPosition()

    20 {

    21 }

    23 nsINode* nsDOMCaretPosition::GetOffsetNode() const

    24 {

    25   return mOffsetNode;

    26 }

    28 already_AddRefed<DOMRect>

    29 nsDOMCaretPosition::GetClientRect() const

    30 {

    31   if (!mOffsetNode) {

    32     return nullptr;

    33   }

    35   nsRefPtr<DOMRect> rect;

    36   nsRefPtr<nsRange> domRange;

    37   nsCOMPtr<nsINode> node;

    39   if (mAnonymousContentNode) {

    40     node = mAnonymousContentNode;

    41   } else {

    42     node = mOffsetNode;

    43   }

    45   nsresult creationRv = nsRange::CreateRange(node, mOffset, node,

    46                                              mOffset,

    47                                              getter_AddRefs<nsRange>(domRange));

    48   if (!NS_SUCCEEDED(creationRv)) {

    49     return nullptr;

    50   }

    52   NS_ASSERTION(domRange, "unable to retrieve valid dom range from CaretPosition");

    54   rect = domRange->GetBoundingClientRect();

    56   return rect.forget();

    57 }

    59 JSObject*

    60 nsDOMCaretPosition::WrapObject(JSContext *aCx)

    61 {

    62   return mozilla::dom::CaretPositionBinding::Wrap(aCx, this);

    63 }

    65 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_2(nsDOMCaretPosition,

    66                                         mOffsetNode, mAnonymousContentNode)

    68 NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCaretPosition)

    69 NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCaretPosition)

    71 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMCaretPosition)

    72   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY

    73   NS_INTERFACE_MAP_ENTRY(nsISupports)

    74 NS_INTERFACE_MAP_END

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