nsDOMCaretPosition.cpp (1898B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #include "nsDOMCaretPosition.h" 8 9 #include "mozilla/ErrorResult.h" 10 #include "mozilla/dom/CaretPositionBinding.h" 11 #include "mozilla/dom/DOMRect.h" 12 #include "nsRange.h" 13 14 using namespace mozilla::dom; 15 16 nsDOMCaretPosition::nsDOMCaretPosition(nsINode* aNode, uint32_t aOffset) 17 : mOffset(aOffset), mOffsetNode(aNode), mAnonymousContentNode(nullptr) {} 18 19 nsDOMCaretPosition::~nsDOMCaretPosition() = default; 20 21 nsINode* nsDOMCaretPosition::GetOffsetNode() const { return mOffsetNode; } 22 23 already_AddRefed<DOMRect> nsDOMCaretPosition::GetClientRect() const { 24 if (!mOffsetNode) { 25 return nullptr; 26 } 27 28 nsCOMPtr<nsINode> node; 29 if (mAnonymousContentNode) { 30 node = mAnonymousContentNode; 31 } else { 32 node = mOffsetNode; 33 } 34 35 RefPtr<nsRange> range = 36 nsRange::Create(node, mOffset, node, mOffset, mozilla::IgnoreErrors()); 37 if (!range) { 38 return nullptr; 39 } 40 RefPtr<DOMRect> rect = range->GetBoundingClientRect(false); 41 return rect.forget(); 42 } 43 44 JSObject* nsDOMCaretPosition::WrapObject(JSContext* aCx, 45 JS::Handle<JSObject*> aGivenProto) { 46 return mozilla::dom::CaretPosition_Binding::Wrap(aCx, this, aGivenProto); 47 } 48 49 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsDOMCaretPosition, mOffsetNode, 50 mAnonymousContentNode) 51 52 NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCaretPosition) 53 NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCaretPosition) 54 55 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMCaretPosition) 56 NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY 57 NS_INTERFACE_MAP_ENTRY(nsISupports) 58 NS_INTERFACE_MAP_END