gecko-dev/dom/xbl/XBLChildrenElement.cpp

176 строки
5.2 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "mozilla/dom/XBLChildrenElement.h"
#include "nsCharSeparatedTokenizer.h"
#include "mozilla/dom/NodeListBinding.h"
#include "nsAttrValueOrString.h"
namespace mozilla {
namespace dom {
XBLChildrenElement::~XBLChildrenElement() {}
NS_IMPL_ELEMENT_CLONE(XBLChildrenElement)
nsresult XBLChildrenElement::BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValueOrString* aValue,
bool aNotify) {
if (aNamespaceID == kNameSpaceID_None) {
if (aName == nsGkAtoms::includes) {
mIncludes.Clear();
if (aValue) {
nsCharSeparatedTokenizer tok(
aValue->String(), '|',
nsCharSeparatedTokenizer::SEPARATOR_OPTIONAL);
while (tok.hasMoreTokens()) {
mIncludes.AppendElement(NS_Atomize(tok.nextToken()));
}
}
}
}
return nsXMLElement::BeforeSetAttr(aNamespaceID, aName, aValue, aNotify);
}
void XBLChildrenElement::DoRemoveDefaultContent(bool aNotify) {
// Default content is going away, need to tell layout about it first.
MOZ_ASSERT(HasChildren(), "Why bothering?");
MOZ_ASSERT(GetParentElement());
// We don't want to do this from frame construction while setting up the
// binding initially.
if (aNotify) {
Element* parent = GetParentElement();
if (nsIDocument* doc = parent->GetComposedDoc()) {
if (nsIPresShell* shell = doc->GetShell()) {
shell->DestroyFramesForAndRestyle(parent);
}
}
}
for (nsIContent* child = static_cast<nsINode*>(this)->GetFirstChild(); child;
child = child->GetNextSibling()) {
MOZ_ASSERT(!child->GetPrimaryFrame());
MOZ_ASSERT(!child->IsElement() || !child->AsElement()->HasServoData());
child->SetXBLInsertionPoint(nullptr);
}
}
} // namespace dom
} // namespace mozilla
using namespace mozilla::dom;
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsAnonymousContentList, mParent)
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsAnonymousContentList)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsAnonymousContentList)
NS_INTERFACE_TABLE_HEAD(nsAnonymousContentList)
NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
NS_INTERFACE_TABLE(nsAnonymousContentList, nsINodeList)
NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(nsAnonymousContentList)
NS_INTERFACE_MAP_END
uint32_t nsAnonymousContentList::Length() {
if (!mParent) {
return 0;
}
uint32_t count = 0;
for (nsIContent* child = mParent->GetFirstChild(); child;
child = child->GetNextSibling()) {
if (child->NodeInfo()->Equals(nsGkAtoms::children, kNameSpaceID_XBL)) {
XBLChildrenElement* point = static_cast<XBLChildrenElement*>(child);
if (point->HasInsertedChildren()) {
count += point->InsertedChildrenLength();
} else {
count += point->GetChildCount();
}
} else {
++count;
}
}
return count;
}
nsIContent* nsAnonymousContentList::Item(uint32_t aIndex) {
if (!mParent) {
return nullptr;
}
uint32_t remIndex = aIndex;
for (nsIContent* child = mParent->GetFirstChild(); child;
child = child->GetNextSibling()) {
if (child->NodeInfo()->Equals(nsGkAtoms::children, kNameSpaceID_XBL)) {
XBLChildrenElement* point = static_cast<XBLChildrenElement*>(child);
if (point->HasInsertedChildren()) {
if (remIndex < point->InsertedChildrenLength()) {
return point->InsertedChild(remIndex);
}
remIndex -= point->InsertedChildrenLength();
} else {
if (remIndex < point->GetChildCount()) {
return point->GetChildAt_Deprecated(remIndex);
}
remIndex -= point->GetChildCount();
}
} else {
if (remIndex == 0) {
return child;
}
--remIndex;
}
}
return nullptr;
}
int32_t nsAnonymousContentList::IndexOf(nsIContent* aContent) {
NS_ASSERTION(
!aContent->NodeInfo()->Equals(nsGkAtoms::children, kNameSpaceID_XBL),
"Looking for insertion point");
if (!mParent) {
return -1;
}
int32_t index = 0;
for (nsIContent* child = mParent->GetFirstChild(); child;
child = child->GetNextSibling()) {
if (child->NodeInfo()->Equals(nsGkAtoms::children, kNameSpaceID_XBL)) {
XBLChildrenElement* point = static_cast<XBLChildrenElement*>(child);
if (point->HasInsertedChildren()) {
int32_t insIndex = point->IndexOfInsertedChild(aContent);
if (insIndex != -1) {
return index + insIndex;
}
index += point->InsertedChildrenLength();
} else {
int32_t insIndex = point->ComputeIndexOf(aContent);
if (insIndex != -1) {
return index + insIndex;
}
index += point->GetChildCount();
}
} else {
if (child == aContent) {
return index;
}
++index;
}
}
return -1;
}
JSObject* nsAnonymousContentList::WrapObject(
JSContext* cx, JS::Handle<JSObject*> aGivenProto) {
return mozilla::dom::NodeList_Binding::Wrap(cx, this, aGivenProto);
}