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