Implement callback reactions for Custom Elements V1

third_party/WebKit/Source/core/dom/custom/CustomElementDefinition.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CustomElementDefinition_h
 #define CustomElementDefinition_h
 
 #include "bindings/core/v8/ScriptValue.h"
 #include "core/CoreExport.h"
 #include "core/dom/custom/CustomElementDescriptor.h"
@@ skipping 25 matching lines @@
     virtual ScriptValue getConstructorForScript() = 0;
 
     using ConstructionStack = HeapVector<Member<Element>, 1>;
     ConstructionStack& constructionStack()
     {
         return m_constructionStack;
     }
 
     void upgrade(Element*);
 
+    // TODO(kojii): Change these methods to pure when script-side is implemented.
+    virtual bool hasConnectedCallback() const { return true; }
+    virtual bool hasDisconnectedCallback() const { return true; }
+    virtual bool hasAttributeChangedCallback(const QualifiedName&) const { return true; }
+
+    virtual void runConnectedCallback(Element*) {}
+    virtual void runDisconnectedCallback(Element*) {}
+    virtual void runAttributeChangedCallback(Element*, const QualifiedName&,
+        const AtomicString& oldValue, const AtomicString& newValue) {}
+
+    void enqueueUpgradeReaction(Element*);
+    void enqueueConnectedCallback(Element*);
+    void enqueueDisconnectedCallback(Element*);
+    void enqueueAttributeChangedCallback(Element*, const QualifiedName&,
+        const AtomicString& oldValue, const AtomicString& newValue);
+
 protected:
     virtual bool runConstructor(Element*) = 0;
 
 private:
     const CustomElementDescriptor m_descriptor;
     ConstructionStack m_constructionStack;
 };
 
 } // namespace blink
 
 #endif // CustomElementDefinition_h