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
|
/* -*- 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/. */
#include "mozilla/dom/HTMLOptionsCollection.h"
#include "mozilla/dom/HTMLOptionsCollectionBinding.h"
#include "mozilla/dom/HTMLOptionElement.h"
#include "mozilla/dom/HTMLSelectElement.h"
namespace mozilla::dom {
HTMLOptionsCollection::HTMLOptionsCollection(HTMLSelectElement* aSelect)
: mSelect(aSelect) {}
nsresult HTMLOptionsCollection::GetOptionIndex(Element* aOption,
int32_t aStartIndex,
bool aForward, int32_t* aIndex) {
// NOTE: aIndex shouldn't be set if the returned value isn't NS_OK.
int32_t index;
// Make the common case fast
if (aStartIndex == 0 && aForward) {
index = mElements.IndexOf(aOption);
if (index == -1) {
return NS_ERROR_FAILURE;
}
*aIndex = index;
return NS_OK;
}
int32_t high = mElements.Length();
int32_t step = aForward ? 1 : -1;
for (index = aStartIndex; index < high && index > -1; index += step) {
if (mElements[index] == aOption) {
*aIndex = index;
return NS_OK;
}
}
return NS_ERROR_FAILURE;
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(HTMLOptionsCollection, mElements, mSelect)
// nsISupports
// QueryInterface implementation for HTMLOptionsCollection
NS_INTERFACE_TABLE_HEAD(HTMLOptionsCollection)
NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
NS_INTERFACE_TABLE(HTMLOptionsCollection, nsIHTMLCollection)
NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(HTMLOptionsCollection)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(HTMLOptionsCollection)
NS_IMPL_CYCLE_COLLECTING_RELEASE(HTMLOptionsCollection)
JSObject* HTMLOptionsCollection::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLOptionsCollection_Binding::Wrap(aCx, this, aGivenProto);
}
uint32_t HTMLOptionsCollection::Length() { return mElements.Length(); }
void HTMLOptionsCollection::SetLength(uint32_t aLength, ErrorResult& aError) {
mSelect->SetLength(aLength, aError);
}
void HTMLOptionsCollection::IndexedSetter(uint32_t aIndex,
HTMLOptionElement* aOption,
ErrorResult& aError) {
// if the new option is null, just remove this option. Note that it's safe
// to pass a too-large aIndex in here.
if (!aOption) {
mSelect->Remove(aIndex);
// We're done.
return;
}
// Now we're going to be setting an option in our collection
if (aIndex > mElements.Length()) {
// Fill our array with blank options up to (but not including, since we're
// about to change it) aIndex, for compat with other browsers.
SetLength(aIndex, aError);
ENSURE_SUCCESS_VOID(aError);
}
NS_ASSERTION(aIndex <= mElements.Length(), "SetLength lied");
if (aIndex == mElements.Length()) {
mSelect->AppendChild(*aOption, aError);
return;
}
// Find the option they're talking about and replace it
// hold a strong reference to follow COM rules.
RefPtr<HTMLOptionElement> refChild = ItemAsOption(aIndex);
if (!refChild) {
aError.Throw(NS_ERROR_UNEXPECTED);
return;
}
nsCOMPtr<nsINode> parent = refChild->GetParent();
if (!parent) {
return;
}
parent->ReplaceChild(*aOption, *refChild, aError);
}
int32_t HTMLOptionsCollection::SelectedIndex() {
return mSelect->SelectedIndex();
}
void HTMLOptionsCollection::SetSelectedIndex(int32_t aSelectedIndex) {
mSelect->SetSelectedIndex(aSelectedIndex);
}
Element* HTMLOptionsCollection::GetElementAt(uint32_t aIndex) {
return ItemAsOption(aIndex);
}
HTMLOptionElement* HTMLOptionsCollection::NamedGetter(const nsAString& aName,
bool& aFound) {
uint32_t count = mElements.Length();
for (uint32_t i = 0; i < count; i++) {
HTMLOptionElement* content = mElements.ElementAt(i);
if (content && (content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
aName, eCaseMatters) ||
content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::id,
aName, eCaseMatters))) {
aFound = true;
return content;
}
}
aFound = false;
return nullptr;
}
nsINode* HTMLOptionsCollection::GetParentObject() { return mSelect; }
DocGroup* HTMLOptionsCollection::GetDocGroup() const {
return mSelect ? mSelect->GetDocGroup() : nullptr;
}
void HTMLOptionsCollection::GetSupportedNames(nsTArray<nsString>& aNames) {
AutoTArray<nsAtom*, 8> atoms;
for (uint32_t i = 0; i < mElements.Length(); ++i) {
HTMLOptionElement* content = mElements.ElementAt(i);
if (content) {
// Note: HasName means the names is exposed on the document,
// which is false for options, so we don't check it here.
const nsAttrValue* val = content->GetParsedAttr(nsGkAtoms::name);
if (val && val->Type() == nsAttrValue::eAtom) {
nsAtom* name = val->GetAtomValue();
if (!atoms.Contains(name)) {
atoms.AppendElement(name);
}
}
if (content->HasID()) {
nsAtom* id = content->GetID();
if (!atoms.Contains(id)) {
atoms.AppendElement(id);
}
}
}
}
uint32_t atomsLen = atoms.Length();
nsString* names = aNames.AppendElements(atomsLen);
for (uint32_t i = 0; i < atomsLen; ++i) {
atoms[i]->ToString(names[i]);
}
}
void HTMLOptionsCollection::Add(const HTMLOptionOrOptGroupElement& aElement,
const Nullable<HTMLElementOrLong>& aBefore,
ErrorResult& aError) {
mSelect->Add(aElement, aBefore, aError);
}
void HTMLOptionsCollection::Remove(int32_t aIndex) { mSelect->Remove(aIndex); }
} // namespace mozilla::dom
|
