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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/. */
#include "Grid.h"
#include "GridArea.h"
#include "GridDimension.h"
#include "mozilla/dom/GridBinding.h"
#include "nsGridContainerFrame.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Grid, mParent, mRows, mCols, mAreas)
NS_IMPL_CYCLE_COLLECTING_ADDREF(Grid)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Grid)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Grid)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
Grid::Grid(nsISupports* aParent,
nsGridContainerFrame* aFrame)
: mParent(do_QueryInterface(aParent))
, mRows(new GridDimension(this))
, mCols(new GridDimension(this))
{
MOZ_ASSERT(aFrame,
"Should never be instantiated with a null nsGridContainerFrame");
// Construct areas first, because lines may need to reference them
// to extract additional names for boundary lines.
// Add implicit areas first. Track the names that we add here, because
// we will ignore future explicit areas with the same name.
nsTHashtable<nsStringHashKey> namesSeen;
nsGridContainerFrame::ImplicitNamedAreas* implicitAreas =
aFrame->GetImplicitNamedAreas();
if (implicitAreas) {
for (auto iter = implicitAreas->Iter(); !iter.Done(); iter.Next()) {
auto& areaInfo = iter.Data();
namesSeen.PutEntry(areaInfo.mName);
GridArea* area = new GridArea(this,
areaInfo.mName,
GridDeclaration::Implicit,
areaInfo.mRowStart,
areaInfo.mRowEnd,
areaInfo.mColumnStart,
areaInfo.mColumnEnd);
mAreas.AppendElement(area);
}
}
// Add explicit areas next, as long as they don't have the same name
// as the implicit areas, because the implicit values override what was
// initially available in the explicit areas.
nsGridContainerFrame::ExplicitNamedAreas* explicitAreas =
aFrame->GetExplicitNamedAreas();
if (explicitAreas) {
for (auto& areaInfo : *explicitAreas) {
if (!namesSeen.Contains(areaInfo.mName)) {
GridArea* area = new GridArea(this,
areaInfo.mName,
GridDeclaration::Explicit,
areaInfo.mRowStart,
areaInfo.mRowEnd,
areaInfo.mColumnStart,
areaInfo.mColumnEnd);
mAreas.AppendElement(area);
}
}
}
// Now construct the tracks and lines.
const ComputedGridTrackInfo* rowTrackInfo =
aFrame->GetComputedTemplateRows();
const ComputedGridLineInfo* rowLineInfo =
aFrame->GetComputedTemplateRowLines();
mRows->SetTrackInfo(rowTrackInfo);
mRows->SetLineInfo(rowTrackInfo, rowLineInfo, mAreas, true);
const ComputedGridTrackInfo* columnTrackInfo =
aFrame->GetComputedTemplateColumns();
const ComputedGridLineInfo* columnLineInfo =
aFrame->GetComputedTemplateColumnLines();
mCols->SetTrackInfo(columnTrackInfo);
mCols->SetLineInfo(columnTrackInfo, columnLineInfo, mAreas, false);
}
Grid::~Grid()
{
}
JSObject*
Grid::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return GridBinding::Wrap(aCx, this, aGivenProto);
}
GridDimension*
Grid::Rows() const
{
return mRows;
}
GridDimension*
Grid::Cols() const
{
return mCols;
}
void
Grid::GetAreas(nsTArray<RefPtr<GridArea>>& aAreas) const
{
aAreas = mAreas;
}
} // namespace dom
} // namespace mozilla
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