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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#ifndef mozilla_dom_StaticRange_h
#define mozilla_dom_StaticRange_h
#include "mozilla/RangeBoundary.h"
#include "mozilla/dom/AbstractRange.h"
#include "mozilla/dom/StaticRangeBinding.h"
#include "nsTArray.h"
#include "nsWrapperCache.h"
namespace mozilla {
class ErrorResult;
namespace dom {
class StaticRange final : public AbstractRange {
public:
StaticRange() = delete;
explicit StaticRange(const StaticRange& aOther) = delete;
static already_AddRefed<StaticRange> Constructor(const GlobalObject& global,
const StaticRangeInit& init,
ErrorResult& aRv);
/**
* The following Create() returns `nsRange` instance which is initialized
* only with aNode. The result is never positioned.
*/
static already_AddRefed<StaticRange> Create(nsINode* aNode);
/**
* Create() may return `StaticRange` instance which is initialized with
* given range or points. If it fails initializing new range with the
* arguments, returns `nullptr`. `ErrorResult` is set to an error only
* when this returns `nullptr`. The error code indicates the reason why
* it couldn't initialize the instance.
*/
static already_AddRefed<StaticRange> Create(
const AbstractRange* aAbstractRange, ErrorResult& aRv) {
MOZ_ASSERT(aAbstractRange);
return StaticRange::Create(aAbstractRange->StartRef(),
aAbstractRange->EndRef(), aRv);
}
static already_AddRefed<StaticRange> Create(nsINode* aStartContainer,
uint32_t aStartOffset,
nsINode* aEndContainer,
uint32_t aEndOffset,
ErrorResult& aRv) {
return StaticRange::Create(
RawRangeBoundary(aStartContainer, aStartOffset,
RangeBoundaryIsMutationObserved::No),
RawRangeBoundary(aEndContainer, aEndOffset,
RangeBoundaryIsMutationObserved::No),
aRv);
}
template <typename SPT, typename SRT, typename EPT, typename ERT>
static already_AddRefed<StaticRange> Create(
const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
const RangeBoundaryBase<EPT, ERT>& aEndBoundary, ErrorResult& aRv);
/**
* Returns true if the range is valid.
*
* @see https://dom.spec.whatwg.org/#staticrange-valid
*/
bool IsValid() const {
return mStart.IsSetAndValid() && mEnd.IsSetAndValid();
}
protected:
explicit StaticRange(nsINode* aNode)
: AbstractRange(aNode, /* aIsDynamicRange = */ false) {}
virtual ~StaticRange();
public:
NS_DECL_ISUPPORTS_INHERITED
NS_IMETHODIMP_(void) DeleteCycleCollectable(void) override;
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(StaticRange,
AbstractRange)
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
/**
* SetStartAndEnd() works similar to call both SetStart() and SetEnd().
* Different from calls them separately, this does nothing if either
* the start point or the end point is invalid point.
* If the specified start point is after the end point, the range will be
* collapsed at the end point. Similarly, if they are in different root,
* the range will be collapsed at the end point.
*/
nsresult SetStartAndEnd(nsINode* aStartContainer, uint32_t aStartOffset,
nsINode* aEndContainer, uint32_t aEndOffset) {
return SetStartAndEnd(RawRangeBoundary(aStartContainer, aStartOffset),
RawRangeBoundary(aEndContainer, aEndOffset));
}
template <typename SPT, typename SRT, typename EPT, typename ERT>
nsresult SetStartAndEnd(const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
const RangeBoundaryBase<EPT, ERT>& aEndBoundary) {
return AbstractRange::SetStartAndEndInternal(aStartBoundary, aEndBoundary,
this);
}
protected:
/**
* DoSetRange() is called when `AbstractRange::SetStartAndEndInternal()` sets
* mStart and mEnd.
*
* @param aStartBoundary Computed start point. This must equals or be before
* aEndBoundary in the DOM tree order.
* @param aEndBoundary Computed end point.
* @param aRootNode The root node.
*/
template <typename SPT, typename SRT, typename EPT, typename ERT>
void DoSetRange(const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
const RangeBoundaryBase<EPT, ERT>& aEndBoundary,
nsINode* aRootNode);
static nsTArray<RefPtr<StaticRange>>* sCachedRanges;
friend class AbstractRange;
};
inline StaticRange* AbstractRange::AsStaticRange() {
MOZ_ASSERT(IsStaticRange());
return static_cast<StaticRange*>(this);
}
inline const StaticRange* AbstractRange::AsStaticRange() const {
MOZ_ASSERT(IsStaticRange());
return static_cast<const StaticRange*>(this);
}
} // namespace dom
} // namespace mozilla
#endif // #ifndef mozilla_dom_StaticRange_h
|
