зеркало из https://github.com/mozilla/gecko-dev.git
69 строки
2.2 KiB
C++
69 строки
2.2 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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#include "Flex.h"
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#include "FlexLineValues.h"
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#include "mozilla/dom/FlexBinding.h"
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#include "nsFlexContainerFrame.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Flex, mParent, mLines)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(Flex)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(Flex)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Flex)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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Flex::Flex(Element* aParent, nsFlexContainerFrame* aFrame) : mParent(aParent) {
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MOZ_ASSERT(aFrame,
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"Should never be instantiated with a null nsFlexContainerFrame");
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// Eagerly create property values from aFrame, because we're not
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// going to keep it around.
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const ComputedFlexContainerInfo* containerInfo =
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aFrame->GetFlexContainerInfo();
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if (!containerInfo) {
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// It's weird but possible to fail to get a ComputedFlexContainerInfo
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// structure. Assign sensible default values.
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mMainAxisDirection = FlexPhysicalDirection::Horizontal_lr;
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mCrossAxisDirection = FlexPhysicalDirection::Vertical_tb;
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return;
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}
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mLines.SetLength(containerInfo->mLines.Length());
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uint32_t index = 0;
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for (auto&& l : containerInfo->mLines) {
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FlexLineValues* line = new FlexLineValues(this, &l);
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mLines.ElementAt(index) = line;
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index++;
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}
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mMainAxisDirection = containerInfo->mMainAxisDirection;
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mCrossAxisDirection = containerInfo->mCrossAxisDirection;
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}
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JSObject* Flex::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
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return Flex_Binding::Wrap(aCx, this, aGivenProto);
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}
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void Flex::GetLines(nsTArray<RefPtr<FlexLineValues>>& aResult) {
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aResult.AppendElements(mLines);
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}
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FlexPhysicalDirection Flex::MainAxisDirection() const {
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return mMainAxisDirection;
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}
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FlexPhysicalDirection Flex::CrossAxisDirection() const {
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return mCrossAxisDirection;
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}
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} // namespace dom
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} // namespace mozilla
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