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/dom/CaretPositionBinding.h"
10 #include "mozilla/dom/DOMRect.h"
11 #include "nsRange.h"
12
13 using namespace mozilla::dom;
14
nsDOMCaretPosition(nsINode * aNode,uint32_t aOffset)15 nsDOMCaretPosition::nsDOMCaretPosition(nsINode* aNode, uint32_t aOffset)
16 : mOffset(aOffset), mOffsetNode(aNode), mAnonymousContentNode(nullptr)
17 {
18 }
19
~nsDOMCaretPosition()20 nsDOMCaretPosition::~nsDOMCaretPosition()
21 {
22 }
23
GetOffsetNode() const24 nsINode* nsDOMCaretPosition::GetOffsetNode() const
25 {
26 return mOffsetNode;
27 }
28
29 already_AddRefed<DOMRect>
GetClientRect() const30 nsDOMCaretPosition::GetClientRect() const
31 {
32 if (!mOffsetNode) {
33 return nullptr;
34 }
35
36 RefPtr<DOMRect> rect;
37 RefPtr<nsRange> domRange;
38 nsCOMPtr<nsINode> node;
39
40 if (mAnonymousContentNode) {
41 node = mAnonymousContentNode;
42 } else {
43 node = mOffsetNode;
44 }
45
46 nsresult creationRv = nsRange::CreateRange(node, mOffset, node,
47 mOffset,
48 getter_AddRefs<nsRange>(domRange));
49 if (!NS_SUCCEEDED(creationRv)) {
50 return nullptr;
51 }
52
53 NS_ASSERTION(domRange, "unable to retrieve valid dom range from CaretPosition");
54
55 rect = domRange->GetBoundingClientRect(false);
56
57 return rect.forget();
58 }
59
60 JSObject*
WrapObject(JSContext * aCx,JS::Handle<JSObject * > aGivenProto)61 nsDOMCaretPosition::WrapObject(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
62 {
63 return mozilla::dom::CaretPositionBinding::Wrap(aCx, this, aGivenProto);
64 }
65
66 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsDOMCaretPosition,
67 mOffsetNode, mAnonymousContentNode)
68
69 NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCaretPosition)
70 NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCaretPosition)
71
72 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMCaretPosition)
73 NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
74 NS_INTERFACE_MAP_ENTRY(nsISupports)
75 NS_INTERFACE_MAP_END
76
77