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
|
/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "HTMLSlotElement.h"
#if ENABLE(SHADOW_DOM) || ENABLE(DETAILS_ELEMENT)
#include "ElementChildIterator.h"
#include "HTMLNames.h"
#include "ShadowRoot.h"
namespace WebCore {
using namespace HTMLNames;
Ref<HTMLSlotElement> HTMLSlotElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new HTMLSlotElement(tagName, document));
}
HTMLSlotElement::HTMLSlotElement(const QualifiedName& tagName, Document& document)
: HTMLElement(tagName, document)
{
ASSERT(hasTagName(slotTag));
}
HTMLSlotElement::InsertionNotificationRequest HTMLSlotElement::insertedInto(ContainerNode& insertionPoint)
{
auto insertionResult = HTMLElement::insertedInto(insertionPoint);
ASSERT_UNUSED(insertionResult, insertionResult == InsertionDone);
// This function could be called when this element's shadow root's host or its ancestor is inserted.
// This element is new to the shadow tree (and its tree scope) only if the parent into which this element
// or its ancestor is inserted belongs to the same tree scope as this element's.
if (insertionPoint.isInShadowTree() && isInShadowTree() && &insertionPoint.treeScope() == &treeScope()) {
if (auto shadowRoot = containingShadowRoot())
shadowRoot->addSlotElementByName(fastGetAttribute(nameAttr), *this);
}
return InsertionDone;
}
void HTMLSlotElement::removedFrom(ContainerNode& insertionPoint)
{
// ContainerNode::removeBetween always sets the removed chid's tree scope to Document's but InShadowRoot flag is unset in Node::removedFrom.
// So if InShadowRoot flag is set but this element's tree scope is Document's, this element has just been removed from a shadow root.
if (insertionPoint.isInShadowTree() && isInShadowTree() && &treeScope() == &document()) {
auto* oldShadowRoot = insertionPoint.containingShadowRoot();
ASSERT(oldShadowRoot);
oldShadowRoot->removeSlotElementByName(fastGetAttribute(nameAttr), *this);
}
HTMLElement::removedFrom(insertionPoint);
}
void HTMLSlotElement::attributeChanged(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& newValue, AttributeModificationReason reason)
{
HTMLElement::attributeChanged(name, oldValue, newValue, reason);
if (isInShadowTree() && name == nameAttr) {
if (auto* shadowRoot = containingShadowRoot()) {
shadowRoot->removeSlotElementByName(oldValue, *this);
shadowRoot->addSlotElementByName(newValue, *this);
}
}
}
const Vector<Node*>* HTMLSlotElement::assignedNodes() const
{
auto* shadowRoot = containingShadowRoot();
if (!shadowRoot)
return nullptr;
return shadowRoot->assignedNodesForSlot(*this);
}
}
#endif
|
