forked from mirrors/gecko-dev
8efc00817c
This is to allow settings saved in prefs to be validated against a printer and for print preview to be updated if any changes affecting layout occur. Differential Revision: https://phabricator.services.mozilla.com/D98458
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef nsPrinterBase_h__
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#define nsPrinterBase_h__
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#include "mozilla/gfx/Rect.h"
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#include "nsIPrinter.h"
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#include "nsTArray.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsISupportsImpl.h"
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#include "nsPrintSettingsImpl.h"
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#include "mozilla/EnumeratedArray.h"
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#include "mozilla/Result.h"
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namespace mozilla {
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struct PaperInfo;
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namespace dom {
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class Promise;
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}
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} // namespace mozilla
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class nsPrinterBase : public nsIPrinter {
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public:
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using Promise = mozilla::dom::Promise;
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using MarginDouble = mozilla::gfx::MarginDouble;
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using PrintSettingsInitializer = mozilla::PrintSettingsInitializer;
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NS_IMETHOD CopyFromWithValidation(nsIPrintSettings*, JSContext*,
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Promise**) override;
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NS_IMETHOD GetSupportsDuplex(JSContext*, Promise**) final;
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NS_IMETHOD GetSupportsColor(JSContext*, Promise**) final;
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NS_IMETHOD GetSupportsMonochrome(JSContext*, Promise**) final;
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NS_IMETHOD GetSupportsCollation(JSContext*, Promise**) final;
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NS_IMETHOD GetPrinterInfo(JSContext*, Promise**) final;
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS(nsPrinterBase)
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// We require the paper info array
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nsPrinterBase() = delete;
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// No copy or move, we're an identity.
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nsPrinterBase(const nsPrinterBase&) = delete;
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nsPrinterBase(nsPrinterBase&&) = delete;
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void QueryMarginsForPaper(Promise&, const nsString& aPaperId);
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/**
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* Caches the argument by copying it into mPrintSettingsInitializer.
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* If mPrintSettingsInitializer is already populated this is a no-op.
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*/
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void CachePrintSettingsInitializer(
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const PrintSettingsInitializer& aInitializer);
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// Data to pass through to create the nsPrinterInfo
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struct PrinterInfo {
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nsTArray<mozilla::PaperInfo> mPaperList;
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PrintSettingsInitializer mDefaultSettings;
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};
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private:
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enum class AsyncAttribute {
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// If you change this list you must update attributeKeys in
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// nsPrinterBase::AsyncPromiseAttributeGetter.
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SupportsDuplex = 0,
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SupportsColor,
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SupportsMonochrome,
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SupportsCollation,
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PrinterInfo,
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// Just a guard.
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Last,
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};
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template <typename Result, typename... Args>
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using BackgroundTask = Result (nsPrinterBase::*)(Args...) const;
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// Resolves an async attribute via a background task.
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template <typename T, typename... Args>
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nsresult AsyncPromiseAttributeGetter(JSContext*, Promise**, AsyncAttribute,
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BackgroundTask<T, Args...>,
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Args... aArgs);
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protected:
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nsPrinterBase(const mozilla::CommonPaperInfoArray* aPaperInfoArray);
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virtual ~nsPrinterBase();
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// Implementation-specific methods. These must not make assumptions about
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// which thread they run on.
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virtual bool SupportsDuplex() const = 0;
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virtual bool SupportsColor() const = 0;
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virtual bool SupportsMonochrome() const = 0;
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virtual bool SupportsCollation() const = 0;
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virtual MarginDouble GetMarginsForPaper(nsString aPaperId) const = 0;
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virtual PrinterInfo CreatePrinterInfo() const = 0;
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// Searches our built-in list of commonly used PWG paper sizes for a matching,
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// localized PaperInfo. Returns null if there is no matching size.
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const mozilla::PaperInfo* FindCommonPaperSize(
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const mozilla::gfx::SizeDouble& aSize) const;
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private:
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mozilla::EnumeratedArray<AsyncAttribute, AsyncAttribute::Last,
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RefPtr<Promise>>
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mAsyncAttributePromises;
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// List of built-in, commonly used paper sizes.
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const RefPtr<const mozilla::CommonPaperInfoArray> mCommonPaperInfo;
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};
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#endif
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