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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "core/dom/custom/CustomElementDefinition.h" | 5 #include "core/dom/custom/CustomElementDefinition.h" |
6 | 6 |
| 7 #include "core/dom/Attr.h" |
7 #include "core/dom/custom/CEReactionsScope.h" | 8 #include "core/dom/custom/CEReactionsScope.h" |
8 #include "core/dom/custom/CustomElement.h" | 9 #include "core/dom/custom/CustomElement.h" |
9 #include "core/dom/custom/CustomElementAttributeChangedCallbackReaction.h" | 10 #include "core/dom/custom/CustomElementAttributeChangedCallbackReaction.h" |
10 #include "core/dom/custom/CustomElementConnectedCallbackReaction.h" | 11 #include "core/dom/custom/CustomElementConnectedCallbackReaction.h" |
11 #include "core/dom/custom/CustomElementDisconnectedCallbackReaction.h" | 12 #include "core/dom/custom/CustomElementDisconnectedCallbackReaction.h" |
12 #include "core/dom/custom/CustomElementUpgradeReaction.h" | 13 #include "core/dom/custom/CustomElementUpgradeReaction.h" |
13 | 14 |
14 namespace blink { | 15 namespace blink { |
15 | 16 |
16 CustomElementDefinition::CustomElementDefinition( | 17 CustomElementDefinition::CustomElementDefinition( |
17 const CustomElementDescriptor& descriptor) | 18 const CustomElementDescriptor& descriptor) |
18 : m_descriptor(descriptor) | 19 : m_descriptor(descriptor) |
19 { | 20 { |
20 } | 21 } |
21 | 22 |
| 23 CustomElementDefinition::CustomElementDefinition( |
| 24 const CustomElementDescriptor& descriptor, |
| 25 const HashSet<AtomicString>& observedAttributes) |
| 26 : m_descriptor(descriptor) |
| 27 , m_observedAttributes(observedAttributes) |
| 28 { |
| 29 } |
| 30 |
22 CustomElementDefinition::~CustomElementDefinition() | 31 CustomElementDefinition::~CustomElementDefinition() |
23 { | 32 { |
24 } | 33 } |
25 | 34 |
26 DEFINE_TRACE(CustomElementDefinition) | 35 DEFINE_TRACE(CustomElementDefinition) |
27 { | 36 { |
28 visitor->trace(m_constructionStack); | 37 visitor->trace(m_constructionStack); |
29 } | 38 } |
30 | 39 |
31 // https://html.spec.whatwg.org/multipage/scripting.html#concept-upgrade-an-elem
ent | 40 // https://html.spec.whatwg.org/multipage/scripting.html#concept-upgrade-an-elem
ent |
32 void CustomElementDefinition::upgrade(Element* element) | 41 void CustomElementDefinition::upgrade(Element* element) |
33 { | 42 { |
34 // TODO(kojii): This should be reversed by exposing observedAttributes from | 43 if (!m_observedAttributes.isEmpty()) |
35 // ScriptCustomElementDefinition, because Element::attributes() requires | 44 enqueueAttributeChangedCallbackForAllAttributes(element); |
36 // attribute synchronizations, and generally elements have more attributes | |
37 // than custom elements observe. | |
38 for (const auto& attribute : element->attributes()) { | |
39 if (hasAttributeChangedCallback(attribute.name())) | |
40 enqueueAttributeChangedCallback(element, attribute.name(), nullAtom,
attribute.value()); | |
41 } | |
42 | 45 |
43 if (element->inShadowIncludingDocument() && hasConnectedCallback()) | 46 if (element->inShadowIncludingDocument() && hasConnectedCallback()) |
44 enqueueConnectedCallback(element); | 47 enqueueConnectedCallback(element); |
45 | 48 |
46 m_constructionStack.append(element); | 49 m_constructionStack.append(element); |
47 size_t depth = m_constructionStack.size(); | 50 size_t depth = m_constructionStack.size(); |
48 | 51 |
49 bool succeeded = runConstructor(element); | 52 bool succeeded = runConstructor(element); |
50 | 53 |
51 // Pop the construction stack. | 54 // Pop the construction stack. |
52 if (m_constructionStack.last().get()) | 55 if (m_constructionStack.last().get()) |
53 DCHECK_EQ(m_constructionStack.last(), element); | 56 DCHECK_EQ(m_constructionStack.last(), element); |
54 DCHECK_EQ(m_constructionStack.size(), depth); // It's a *stack*. | 57 DCHECK_EQ(m_constructionStack.size(), depth); // It's a *stack*. |
55 m_constructionStack.removeLast(); | 58 m_constructionStack.removeLast(); |
56 | 59 |
57 if (!succeeded) | 60 if (!succeeded) |
58 return; | 61 return; |
59 | 62 |
60 CHECK(element->getCustomElementState() == CustomElementState::Custom); | 63 CHECK(element->getCustomElementState() == CustomElementState::Custom); |
61 } | 64 } |
62 | 65 |
| 66 bool CustomElementDefinition::hasAttributeChangedCallback( |
| 67 const QualifiedName& name) |
| 68 { |
| 69 return m_observedAttributes.contains(name.localName()); |
| 70 } |
| 71 |
63 static void enqueueReaction(Element* element, CustomElementReaction* reaction) | 72 static void enqueueReaction(Element* element, CustomElementReaction* reaction) |
64 { | 73 { |
65 // CEReactionsScope must be created by [CEReactions] in IDL, | 74 // CEReactionsScope must be created by [CEReactions] in IDL, |
66 // or callers must setup explicitly if it does not go through bindings. | 75 // or callers must setup explicitly if it does not go through bindings. |
67 DCHECK(CEReactionsScope::current()); | 76 DCHECK(CEReactionsScope::current()); |
68 CEReactionsScope::current()->enqueue(element, reaction); | 77 CEReactionsScope::current()->enqueue(element, reaction); |
69 } | 78 } |
70 | 79 |
71 void CustomElementDefinition::enqueueUpgradeReaction(Element* element) | 80 void CustomElementDefinition::enqueueUpgradeReaction(Element* element) |
72 { | 81 { |
(...skipping 10 matching lines...) Expand all Loading... |
83 enqueueReaction(element, new CustomElementDisconnectedCallbackReaction(this)
); | 92 enqueueReaction(element, new CustomElementDisconnectedCallbackReaction(this)
); |
84 } | 93 } |
85 | 94 |
86 void CustomElementDefinition::enqueueAttributeChangedCallback(Element* element, | 95 void CustomElementDefinition::enqueueAttributeChangedCallback(Element* element, |
87 const QualifiedName& name, | 96 const QualifiedName& name, |
88 const AtomicString& oldValue, const AtomicString& newValue) | 97 const AtomicString& oldValue, const AtomicString& newValue) |
89 { | 98 { |
90 enqueueReaction(element, new CustomElementAttributeChangedCallbackReaction(t
his, name, oldValue, newValue)); | 99 enqueueReaction(element, new CustomElementAttributeChangedCallbackReaction(t
his, name, oldValue, newValue)); |
91 } | 100 } |
92 | 101 |
| 102 void CustomElementDefinition::enqueueAttributeChangedCallbackForAllAttributes( |
| 103 Element* element) |
| 104 { |
| 105 // Avoid synchronizing all attributes unless it is needed, while enqueing |
| 106 // callbacks "in order" as defined in the spec. |
| 107 // https://html.spec.whatwg.org/multipage/scripting.html#concept-upgrade-an-
element |
| 108 for (const AtomicString& name : m_observedAttributes) |
| 109 element->synchronizeAttribute(name); |
| 110 for (const auto& attribute : element->attributesWithoutUpdate()) { |
| 111 if (hasAttributeChangedCallback(attribute.name())) { |
| 112 enqueueAttributeChangedCallback(element, attribute.name(), |
| 113 nullAtom, attribute.value()); |
| 114 } |
| 115 } |
| 116 } |
| 117 |
93 } // namespace blink | 118 } // namespace blink |
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