gecko-dev/dom/flex/Flex.cpp

60 строки
1.7 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 "Flex.h"
#include "FlexLine.h"
#include "mozilla/dom/FlexBinding.h"
#include "nsFlexContainerFrame.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Flex, mParent, mLines)
NS_IMPL_CYCLE_COLLECTING_ADDREF(Flex)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Flex)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Flex)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
Flex::Flex(Element* aParent,
nsFlexContainerFrame* aFrame)
: mParent(aParent)
{
MOZ_ASSERT(aFrame,
"Should never be instantiated with a null nsFlexContainerFrame");
// Eagerly create property values from aFrame, because we're not
// going to keep it around.
const ComputedFlexContainerInfo* containerInfo =
aFrame->GetFlexContainerInfo();
MOZ_ASSERT(containerInfo, "Should only be passed a frame with info.");
mLines.SetLength(containerInfo->mLines.Length());
uint32_t index = 0;
for (auto&& l : containerInfo->mLines) {
FlexLine* line = new FlexLine(this, &l);
mLines.ElementAt(index) = line;
index++;
}
}
JSObject*
Flex::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return Flex_Binding::Wrap(aCx, this, aGivenProto);
}
void
Flex::GetLines(nsTArray<RefPtr<FlexLine>>& aResult)
{
aResult.AppendElements(mLines);
}
} // namespace dom
} // namespace mozilla