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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/* -*- 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/. */
/* DOM object for element.style */
#include "nsDOMCSSAttrDeclaration.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/SVGElement.h"
#include "mozilla/dom/MutationEventBinding.h"
#include "mozilla/DeclarationBlock.h"
#include "mozilla/InternalMutationEvent.h"
#include "mozilla/SMILCSSValueType.h"
#include "mozilla/SMILValue.h"
#include "mozAutoDocUpdate.h"
#include "nsWrapperCacheInlines.h"
#include "nsIFrame.h"
#include "ActiveLayerTracker.h"
using namespace mozilla;
using namespace mozilla::dom;
nsDOMCSSAttributeDeclaration::nsDOMCSSAttributeDeclaration(Element* aElement,
bool aIsSMILOverride)
: mElement(aElement), mIsSMILOverride(aIsSMILOverride) {
NS_ASSERTION(aElement, "Inline style for a NULL element?");
}
nsDOMCSSAttributeDeclaration::~nsDOMCSSAttributeDeclaration() = default;
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsDOMCSSAttributeDeclaration, mElement)
// mElement holds a strong ref to us, so if it's going to be
// skipped, the attribute declaration can't be part of a garbage
// cycle.
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(nsDOMCSSAttributeDeclaration)
if (tmp->mElement && Element::CanSkip(tmp->mElement, true)) {
if (tmp->PreservingWrapper()) {
tmp->MarkWrapperLive();
}
return true;
}
return tmp->HasKnownLiveWrapper();
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(nsDOMCSSAttributeDeclaration)
return tmp->HasKnownLiveWrapper() ||
(tmp->mElement && Element::CanSkipInCC(tmp->mElement));
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(nsDOMCSSAttributeDeclaration)
return tmp->HasKnownLiveWrapper() ||
(tmp->mElement && Element::CanSkipThis(tmp->mElement));
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMCSSAttributeDeclaration)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_END_INHERITING(nsDOMCSSDeclaration)
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCSSAttributeDeclaration)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCSSAttributeDeclaration)
nsresult nsDOMCSSAttributeDeclaration::SetCSSDeclaration(
DeclarationBlock* aDecl, MutationClosureData* aClosureData) {
NS_ASSERTION(mElement, "Must have Element to set the declaration!");
// Whenever changing element.style values, aClosureData must be non-null.
// SMIL doesn't update Element's attribute values, so closure data isn't
// needed.
MOZ_ASSERT_IF(!mIsSMILOverride, aClosureData);
// The closure needs to have been called by now, otherwise we shouldn't be
// getting here when the attribute hasn't changed.
MOZ_ASSERT_IF(aClosureData, !aClosureData->mClosure);
aDecl->SetDirty();
if (mIsSMILOverride) {
mElement->SetSMILOverrideStyleDeclaration(*aDecl);
return NS_OK;
}
return mElement->SetInlineStyleDeclaration(*aDecl, *aClosureData);
}
Document* nsDOMCSSAttributeDeclaration::DocToUpdate() {
// We need OwnerDoc() rather than GetUncomposedDoc() because it might
// be the BeginUpdate call that inserts mElement into the document.
return mElement->OwnerDoc();
}
DeclarationBlock* nsDOMCSSAttributeDeclaration::GetOrCreateCSSDeclaration(
Operation aOperation, DeclarationBlock** aCreated) {
MOZ_ASSERT(aOperation != eOperation_Modify || aCreated);
if (!mElement) return nullptr;
DeclarationBlock* declaration;
if (mIsSMILOverride) {
declaration = mElement->GetSMILOverrideStyleDeclaration();
} else {
declaration = mElement->GetInlineStyleDeclaration();
}
if (declaration) {
return declaration;
}
if (aOperation != eOperation_Modify) {
return nullptr;
}
// cannot fail
RefPtr<DeclarationBlock> decl = new DeclarationBlock();
// Mark the declaration dirty so that it can be reused by the caller.
// Normally SetDirty is called later in SetCSSDeclaration.
decl->SetDirty();
#ifdef DEBUG
RefPtr<DeclarationBlock> mutableDecl = decl->EnsureMutable();
MOZ_ASSERT(mutableDecl == decl);
#endif
decl.swap(*aCreated);
return *aCreated;
}
nsDOMCSSDeclaration::ParsingEnvironment
nsDOMCSSAttributeDeclaration::GetParsingEnvironment(
nsIPrincipal* aSubjectPrincipal) const {
return {
mElement->GetURLDataForStyleAttr(aSubjectPrincipal),
mElement->OwnerDoc()->GetCompatibilityMode(),
mElement->OwnerDoc()->CSSLoader(),
};
}
template <typename SetterFunc>
nsresult nsDOMCSSAttributeDeclaration::SetSMILValueHelper(SetterFunc aFunc) {
MOZ_ASSERT(mIsSMILOverride);
// No need to do the ActiveLayerTracker / ScrollLinkedEffectDetector bits,
// since we're in a SMIL animation anyway, no need to try to detect we're a
// scripted animation.
RefPtr<DeclarationBlock> created;
DeclarationBlock* olddecl =
GetOrCreateCSSDeclaration(eOperation_Modify, getter_AddRefs(created));
if (!olddecl) {
return NS_ERROR_NOT_AVAILABLE;
}
mozAutoDocUpdate autoUpdate(DocToUpdate(), true);
RefPtr<DeclarationBlock> decl = olddecl->EnsureMutable();
bool changed = aFunc(*decl);
if (changed) {
// We can pass nullptr as the latter param, since this is
// mIsSMILOverride == true case.
SetCSSDeclaration(decl, nullptr);
}
return NS_OK;
}
nsresult nsDOMCSSAttributeDeclaration::SetSMILValue(
const nsCSSPropertyID /*aPropID*/, const SMILValue& aValue) {
MOZ_ASSERT(aValue.mType == &SMILCSSValueType::sSingleton,
"We should only try setting a CSS value type");
return SetSMILValueHelper([&aValue](DeclarationBlock& aDecl) {
return SMILCSSValueType::SetPropertyValues(aValue, aDecl);
});
}
nsresult nsDOMCSSAttributeDeclaration::SetSMILValue(
const nsCSSPropertyID aPropID, const SVGAnimatedLength& aLength) {
return SetSMILValueHelper([aPropID, &aLength](DeclarationBlock& aDecl) {
return SVGElement::UpdateDeclarationBlockFromLength(
aDecl, aPropID, aLength, SVGElement::ValToUse::Anim);
});
}
void nsDOMCSSAttributeDeclaration::SetPropertyValue(
const nsCSSPropertyID aPropID, const nsACString& aValue,
nsIPrincipal* aSubjectPrincipal, ErrorResult& aRv) {
// Scripted modifications to style.opacity or style.transform (or other
// transform-like properties, e.g. style.translate, style.rotate, style.scale)
// could immediately force us into the animated state if heuristics suggest
// this is scripted animation.
// FIXME: This is missing the margin shorthand and the logical versions of
// the margin properties, see bug 1266287.
if (aPropID == eCSSProperty_opacity || aPropID == eCSSProperty_transform ||
aPropID == eCSSProperty_translate || aPropID == eCSSProperty_rotate ||
aPropID == eCSSProperty_scale || aPropID == eCSSProperty_offset_path ||
aPropID == eCSSProperty_offset_distance ||
aPropID == eCSSProperty_offset_rotate ||
aPropID == eCSSProperty_offset_anchor || aPropID == eCSSProperty_left ||
aPropID == eCSSProperty_top || aPropID == eCSSProperty_right ||
aPropID == eCSSProperty_bottom ||
aPropID == eCSSProperty_background_position_x ||
aPropID == eCSSProperty_background_position_y ||
aPropID == eCSSProperty_background_position) {
nsIFrame* frame = mElement->GetPrimaryFrame();
if (frame) {
ActiveLayerTracker::NotifyInlineStyleRuleModified(frame, aPropID, aValue,
this);
}
}
nsDOMCSSDeclaration::SetPropertyValue(aPropID, aValue, aSubjectPrincipal,
aRv);
}
void nsDOMCSSAttributeDeclaration::MutationClosureFunction(void* aData) {
MutationClosureData* data = static_cast<MutationClosureData*>(aData);
// Clear mClosure pointer so that it doesn't get called again.
data->mClosure = nullptr;
data->mElement->InlineStyleDeclarationWillChange(*data);
}
|
