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
|
/* -*- 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/HTMLDialogElement.h"
#include "mozilla/dom/ElementBinding.h"
#include "mozilla/dom/HTMLDialogElementBinding.h"
#include "nsContentUtils.h"
#include "nsFocusManager.h"
#include "nsIFrame.h"
NS_IMPL_NS_NEW_HTML_ELEMENT(Dialog)
namespace mozilla::dom {
HTMLDialogElement::~HTMLDialogElement() = default;
NS_IMPL_ELEMENT_CLONE(HTMLDialogElement)
void HTMLDialogElement::Close(
const mozilla::dom::Optional<nsAString>& aReturnValue) {
if (!Open()) {
return;
}
if (aReturnValue.WasPassed()) {
SetReturnValue(aReturnValue.Value());
}
SetOpen(false, IgnoreErrors());
RemoveFromTopLayerIfNeeded();
RefPtr<Element> previouslyFocusedElement =
do_QueryReferent(mPreviouslyFocusedElement);
if (previouslyFocusedElement) {
mPreviouslyFocusedElement = nullptr;
FocusOptions options;
options.mPreventScroll = true;
previouslyFocusedElement->Focus(options, CallerType::NonSystem,
IgnoredErrorResult());
}
RefPtr<AsyncEventDispatcher> eventDispatcher =
new AsyncEventDispatcher(this, u"close"_ns, CanBubble::eNo);
eventDispatcher->PostDOMEvent();
}
void HTMLDialogElement::Show(ErrorResult& aError) {
if (Open()) {
if (!IsInTopLayer()) {
return;
}
return aError.ThrowInvalidStateError(
"Cannot call show() on an open modal dialog.");
}
SetOpen(true, IgnoreErrors());
StorePreviouslyFocusedElement();
RefPtr<nsINode> hideUntil = GetTopmostPopoverAncestor(nullptr, false);
if (!hideUntil) {
hideUntil = OwnerDoc();
}
OwnerDoc()->HideAllPopoversUntil(*hideUntil, false, true);
FocusDialog();
}
bool HTMLDialogElement::IsInTopLayer() const {
return State().HasState(ElementState::MODAL);
}
void HTMLDialogElement::AddToTopLayerIfNeeded() {
MOZ_ASSERT(IsInComposedDoc());
if (IsInTopLayer()) {
return;
}
OwnerDoc()->AddModalDialog(*this);
}
void HTMLDialogElement::RemoveFromTopLayerIfNeeded() {
if (!IsInTopLayer()) {
return;
}
OwnerDoc()->RemoveModalDialog(*this);
}
void HTMLDialogElement::StorePreviouslyFocusedElement() {
if (Element* element = nsFocusManager::GetFocusedElementStatic()) {
if (NS_SUCCEEDED(nsContentUtils::CheckSameOrigin(this, element))) {
mPreviouslyFocusedElement = do_GetWeakReference(element);
}
} else if (Document* doc = GetComposedDoc()) {
// Looks like there's a discrepancy sometimes when focus is moved
// to a different in-process window.
if (nsIContent* unretargetedFocus = doc->GetUnretargetedFocusedContent()) {
mPreviouslyFocusedElement = do_GetWeakReference(unretargetedFocus);
}
}
}
void HTMLDialogElement::UnbindFromTree(UnbindContext& aContext) {
RemoveFromTopLayerIfNeeded();
nsGenericHTMLElement::UnbindFromTree(aContext);
}
void HTMLDialogElement::ShowModal(ErrorResult& aError) {
if (Open()) {
if (IsInTopLayer()) {
return;
}
return aError.ThrowInvalidStateError(
"Cannot call showModal() on an open non-modal dialog.");
}
if (!IsInComposedDoc()) {
return aError.ThrowInvalidStateError("Dialog element is not connected");
}
if (IsPopoverOpen()) {
return aError.ThrowInvalidStateError(
"Dialog element is already an open popover.");
}
AddToTopLayerIfNeeded();
SetOpen(true, aError);
StorePreviouslyFocusedElement();
RefPtr<nsINode> hideUntil = GetTopmostPopoverAncestor(nullptr, false);
if (!hideUntil) {
hideUntil = OwnerDoc();
}
OwnerDoc()->HideAllPopoversUntil(*hideUntil, false, true);
FocusDialog();
aError.SuppressException();
}
void HTMLDialogElement::FocusDialog() {
// 1) If subject is inert, return.
// 2) Let control be the first descendant element of subject, in tree
// order, that is not inert and has the autofocus attribute specified.
RefPtr<Document> doc = OwnerDoc();
if (IsInComposedDoc()) {
doc->FlushPendingNotifications(FlushType::Frames);
}
RefPtr<Element> control = HasAttr(nsGkAtoms::autofocus)
? this
: GetFocusDelegate(IsFocusableFlags(0));
// If there isn't one of those either, then let control be subject.
if (!control) {
control = this;
}
FocusCandidate(control, IsInTopLayer());
}
int32_t HTMLDialogElement::TabIndexDefault() { return 0; }
void HTMLDialogElement::QueueCancelDialog() {
// queues an element task on the user interaction task source
OwnerDoc()->Dispatch(
NewRunnableMethod("HTMLDialogElement::RunCancelDialogSteps", this,
&HTMLDialogElement::RunCancelDialogSteps));
}
void HTMLDialogElement::RunCancelDialogSteps() {
// 1) Let close be the result of firing an event named cancel at dialog, with
// the cancelable attribute initialized to true.
bool defaultAction = true;
nsContentUtils::DispatchTrustedEvent(OwnerDoc(), this, u"cancel"_ns,
CanBubble::eNo, Cancelable::eYes,
&defaultAction);
// 2) If close is true and dialog has an open attribute, then close the dialog
// with no return value.
if (defaultAction) {
Optional<nsAString> retValue;
Close(retValue);
}
}
JSObject* HTMLDialogElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLDialogElement_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace mozilla::dom
|
