michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 sw=2 et tw=79: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsXBLChildrenElement_h___
michael@0: #define nsXBLChildrenElement_h___
michael@0: 
michael@0: #include "nsIDOMElement.h"
michael@0: #include "nsINodeList.h"
michael@0: #include "nsBindingManager.h"
michael@0: #include "mozilla/dom/nsXMLElement.h"
michael@0: 
michael@0: class nsAnonymousContentList;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: class ExplicitChildIterator;
michael@0: 
michael@0: class XBLChildrenElement : public nsXMLElement
michael@0: {
michael@0: public:
michael@0:   friend class mozilla::dom::ExplicitChildIterator;
michael@0:   friend class nsAnonymousContentList;
michael@0:   XBLChildrenElement(already_AddRefed<nsINodeInfo>& aNodeInfo)
michael@0:     : nsXMLElement(aNodeInfo)
michael@0:   {
michael@0:   }
michael@0:   XBLChildrenElement(already_AddRefed<nsINodeInfo>&& aNodeInfo)
michael@0:     : nsXMLElement(aNodeInfo)
michael@0:   {
michael@0:   }
michael@0:   ~XBLChildrenElement();
michael@0: 
michael@0:   // nsISupports
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0: 
michael@0:   // nsINode interface methods
michael@0:   virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
michael@0: 
michael@0:   virtual nsXPCClassInfo* GetClassInfo() { return nullptr; }
michael@0: 
michael@0:   virtual nsIDOMNode* AsDOMNode() { return this; }
michael@0: 
michael@0:   // nsIContent interface methods
michael@0:   virtual nsIAtom *GetIDAttributeName() const;
michael@0:   virtual nsIAtom* DoGetID() const;
michael@0:   virtual nsresult UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute,
michael@0:                              bool aNotify);
michael@0:   virtual bool ParseAttribute(int32_t aNamespaceID,
michael@0:                               nsIAtom* aAttribute,
michael@0:                               const nsAString& aValue,
michael@0:                               nsAttrValue& aResult);
michael@0: 
michael@0:   void AppendInsertedChild(nsIContent* aChild)
michael@0:   {
michael@0:     mInsertedChildren.AppendElement(aChild);
michael@0:     aChild->SetXBLInsertionParent(GetParent());
michael@0:   }
michael@0: 
michael@0:   void InsertInsertedChildAt(nsIContent* aChild, uint32_t aIndex)
michael@0:   {
michael@0:     mInsertedChildren.InsertElementAt(aIndex, aChild);
michael@0:     aChild->SetXBLInsertionParent(GetParent());
michael@0:   }
michael@0: 
michael@0:   void RemoveInsertedChild(nsIContent* aChild)
michael@0:   {
michael@0:     // Can't use this assertion as we cheat for dynamic insertions and
michael@0:     // only insert in the innermost insertion point.
michael@0:     //NS_ASSERTION(mInsertedChildren.Contains(aChild),
michael@0:     //             "Removing child that's not there");
michael@0:     mInsertedChildren.RemoveElement(aChild);
michael@0:   }
michael@0: 
michael@0:   void ClearInsertedChildren()
michael@0:   {
michael@0:     for (uint32_t c = 0; c < mInsertedChildren.Length(); ++c) {
michael@0:       mInsertedChildren[c]->SetXBLInsertionParent(nullptr);
michael@0:     }
michael@0:     mInsertedChildren.Clear();
michael@0:   }
michael@0: 
michael@0:   void MaybeSetupDefaultContent()
michael@0:   {
michael@0:     if (!HasInsertedChildren()) {
michael@0:       for (nsIContent* child = static_cast<nsINode*>(this)->GetFirstChild();
michael@0:            child;
michael@0:            child = child->GetNextSibling()) {
michael@0:         child->SetXBLInsertionParent(GetParent());
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   void MaybeRemoveDefaultContent()
michael@0:   {
michael@0:     if (!HasInsertedChildren()) {
michael@0:       for (nsIContent* child = static_cast<nsINode*>(this)->GetFirstChild();
michael@0:            child;
michael@0:            child = child->GetNextSibling()) {
michael@0:         child->SetXBLInsertionParent(nullptr);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   uint32_t InsertedChildrenLength()
michael@0:   {
michael@0:     return mInsertedChildren.Length();
michael@0:   }
michael@0: 
michael@0:   bool HasInsertedChildren()
michael@0:   {
michael@0:     return !mInsertedChildren.IsEmpty();
michael@0:   }
michael@0: 
michael@0:   enum {
michael@0:     NoIndex = uint32_t(-1)
michael@0:   };
michael@0:   uint32_t IndexOfInsertedChild(nsIContent* aChild)
michael@0:   {
michael@0:     return mInsertedChildren.IndexOf(aChild);
michael@0:   }
michael@0: 
michael@0:   bool Includes(nsIContent* aChild)
michael@0:   {
michael@0:     NS_ASSERTION(!mIncludes.IsEmpty(),
michael@0:                  "Shouldn't check for includes on default insertion point");
michael@0:     return mIncludes.Contains(aChild->Tag());
michael@0:   }
michael@0: 
michael@0:   bool IsDefaultInsertion()
michael@0:   {
michael@0:     return mIncludes.IsEmpty();
michael@0:   }
michael@0: 
michael@0:   nsTArray<nsIContent*> mInsertedChildren;
michael@0: 
michael@0: private:
michael@0:   nsTArray<nsCOMPtr<nsIAtom> > mIncludes;
michael@0: };
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: class nsAnonymousContentList : public nsINodeList
michael@0: {
michael@0: public:
michael@0:   nsAnonymousContentList(nsIContent* aParent)
michael@0:     : mParent(aParent)
michael@0:   {
michael@0:     MOZ_COUNT_CTOR(nsAnonymousContentList);
michael@0:     SetIsDOMBinding();
michael@0:   }
michael@0: 
michael@0:   virtual ~nsAnonymousContentList()
michael@0:   {
michael@0:     MOZ_COUNT_DTOR(nsAnonymousContentList);
michael@0:   }
michael@0: 
michael@0:   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
michael@0:   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsAnonymousContentList)
michael@0:   // nsIDOMNodeList interface
michael@0:   NS_DECL_NSIDOMNODELIST
michael@0: 
michael@0:   // nsINodeList interface
michael@0:   virtual int32_t IndexOf(nsIContent* aContent);
michael@0:   virtual nsINode* GetParentObject() { return mParent; }
michael@0:   virtual nsIContent* Item(uint32_t aIndex);
michael@0: 
michael@0:   virtual JSObject* WrapObject(JSContext *cx) MOZ_OVERRIDE;
michael@0: 
michael@0:   bool IsListFor(nsIContent* aContent) {
michael@0:     return mParent == aContent;
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   nsCOMPtr<nsIContent> mParent;
michael@0: };
michael@0: 
michael@0: #endif // nsXBLChildrenElement_h___