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/* -*- Mode: C++; tab-width: 4; 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 "nsPaper.h"
#include "nsPaperMargin.h"
#include "nsPrinterBase.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/Promise.h"
using mozilla::ErrorResult;
using mozilla::PaperInfo;
NS_IMPL_CYCLE_COLLECTION(nsPaper, mMarginPromise, mPrinter)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsPaper)
NS_INTERFACE_MAP_ENTRY(nsIPaper)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIPaper)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsPaper)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsPaper)
nsPaper::nsPaper(const mozilla::PaperInfo& aInfo)
: mPrinter(nullptr), mInfo(aInfo) {}
nsPaper::nsPaper(nsPrinterBase& aPrinter, const mozilla::PaperInfo& aInfo)
: mPrinter(&aPrinter), mInfo(aInfo) {}
nsPaper::~nsPaper() = default;
NS_IMETHODIMP
nsPaper::GetId(nsAString& aId) {
aId = mInfo.mId;
return NS_OK;
}
NS_IMETHODIMP
nsPaper::GetName(nsAString& aName) {
aName = mInfo.mName.IsEmpty() ? mInfo.mId : mInfo.mName;
return NS_OK;
}
NS_IMETHODIMP
nsPaper::GetWidth(double* aWidth) {
NS_ENSURE_ARG_POINTER(aWidth);
*aWidth = mInfo.mSize.Width();
return NS_OK;
}
NS_IMETHODIMP
nsPaper::GetHeight(double* aHeight) {
NS_ENSURE_ARG_POINTER(aHeight);
*aHeight = mInfo.mSize.Height();
return NS_OK;
}
NS_IMETHODIMP
nsPaper::GetUnwriteableMargin(JSContext* aCx, Promise** aPromise) {
if (RefPtr<Promise> existing = mMarginPromise) {
existing.forget(aPromise);
return NS_OK;
}
ErrorResult rv;
RefPtr<Promise> promise = Promise::Create(xpc::CurrentNativeGlobal(aCx), rv);
if (MOZ_UNLIKELY(rv.Failed())) {
return rv.StealNSResult();
}
mMarginPromise = promise;
if (mInfo.mUnwriteableMargin) {
auto margin = mozilla::MakeRefPtr<nsPaperMargin>(*mInfo.mUnwriteableMargin);
mMarginPromise->MaybeResolve(margin);
} else {
if (mPrinter) {
mPrinter->QueryMarginsForPaper(*mMarginPromise, mInfo.mId);
} else {
MOZ_ASSERT_UNREACHABLE("common paper sizes should know their margins");
mMarginPromise->MaybeRejectWithNotSupportedError("Margins unavailable");
}
}
promise.forget(aPromise);
return NS_OK;
}