mirror of
https://github.com/mozilla/gecko-dev.git
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193 lines
5.1 KiB
C++
193 lines
5.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsXBLChildrenElement_h___
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#define nsXBLChildrenElement_h___
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#include "nsIDOMElement.h"
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#include "nsINodeList.h"
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#include "nsBindingManager.h"
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#include "mozilla/dom/nsXMLElement.h"
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class nsAnonymousContentList;
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namespace mozilla {
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namespace dom {
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class XBLChildrenElement : public nsXMLElement
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{
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public:
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explicit XBLChildrenElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsXMLElement(aNodeInfo)
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{
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}
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explicit XBLChildrenElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: nsXMLElement(aNodeInfo)
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{
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}
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsINode interface methods
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virtual nsresult Clone(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult) const override;
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virtual nsIDOMNode* AsDOMNode() override { return this; }
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// nsIContent interface methods
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virtual nsresult UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute,
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bool aNotify) override;
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virtual bool ParseAttribute(int32_t aNamespaceID,
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nsIAtom* aAttribute,
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const nsAString& aValue,
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nsAttrValue& aResult) override;
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void AppendInsertedChild(nsIContent* aChild)
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{
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mInsertedChildren.AppendElement(aChild);
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aChild->SetXBLInsertionParent(GetParent());
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// Appending an inserted child causes the inserted
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// children to be projected instead of default content.
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MaybeRemoveDefaultContent();
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}
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void InsertInsertedChildAt(nsIContent* aChild, uint32_t aIndex)
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{
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mInsertedChildren.InsertElementAt(aIndex, aChild);
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aChild->SetXBLInsertionParent(GetParent());
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// Inserting an inserted child causes the inserted
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// children to be projected instead of default content.
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MaybeRemoveDefaultContent();
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}
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void RemoveInsertedChild(nsIContent* aChild)
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{
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// Can't use this assertion as we cheat for dynamic insertions and
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// only insert in the innermost insertion point.
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//NS_ASSERTION(mInsertedChildren.Contains(aChild),
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// "Removing child that's not there");
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mInsertedChildren.RemoveElement(aChild);
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// After removing the inserted child, default content
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// may be projected into this insertion point.
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MaybeSetupDefaultContent();
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}
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void ClearInsertedChildren()
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{
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for (uint32_t c = 0; c < mInsertedChildren.Length(); ++c) {
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mInsertedChildren[c]->SetXBLInsertionParent(nullptr);
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}
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mInsertedChildren.Clear();
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// After clearing inserted children, default content
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// will be projected into this insertion point.
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MaybeSetupDefaultContent();
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}
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void MaybeSetupDefaultContent()
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{
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if (!HasInsertedChildren()) {
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for (nsIContent* child = static_cast<nsINode*>(this)->GetFirstChild();
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child;
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child = child->GetNextSibling()) {
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child->SetXBLInsertionParent(GetParent());
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}
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}
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}
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void MaybeRemoveDefaultContent()
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{
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if (!HasInsertedChildren()) {
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for (nsIContent* child = static_cast<nsINode*>(this)->GetFirstChild();
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child;
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child = child->GetNextSibling()) {
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child->SetXBLInsertionParent(nullptr);
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}
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}
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}
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uint32_t InsertedChildrenLength()
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{
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return mInsertedChildren.Length();
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}
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bool HasInsertedChildren()
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{
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return !mInsertedChildren.IsEmpty();
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}
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int32_t IndexOfInsertedChild(nsIContent* aChild)
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{
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return mInsertedChildren.IndexOf(aChild);
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}
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bool Includes(nsIContent* aChild)
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{
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NS_ASSERTION(!mIncludes.IsEmpty(),
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"Shouldn't check for includes on default insertion point");
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return mIncludes.Contains(aChild->NodeInfo()->NameAtom());
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}
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bool IsDefaultInsertion()
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{
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return mIncludes.IsEmpty();
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}
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nsIContent* InsertedChild(uint32_t aIndex)
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{
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return mInsertedChildren[aIndex];
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}
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protected:
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~XBLChildrenElement();
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private:
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nsTArray<nsIContent*> mInsertedChildren; // WEAK
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nsTArray<nsCOMPtr<nsIAtom> > mIncludes;
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};
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} // namespace dom
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} // namespace mozilla
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class nsAnonymousContentList : public nsINodeList
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{
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public:
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explicit nsAnonymousContentList(nsIContent* aParent)
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: mParent(aParent)
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{
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MOZ_COUNT_CTOR(nsAnonymousContentList);
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}
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsAnonymousContentList)
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// nsIDOMNodeList interface
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NS_DECL_NSIDOMNODELIST
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// nsINodeList interface
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virtual int32_t IndexOf(nsIContent* aContent) override;
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virtual nsINode* GetParentObject() override { return mParent; }
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virtual nsIContent* Item(uint32_t aIndex) override;
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virtual JSObject* WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
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bool IsListFor(nsIContent* aContent) {
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return mParent == aContent;
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}
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private:
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virtual ~nsAnonymousContentList()
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{
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MOZ_COUNT_DTOR(nsAnonymousContentList);
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}
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nsCOMPtr<nsIContent> mParent;
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};
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#endif // nsXBLChildrenElement_h___
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