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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 "nsPrintingProxy.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/BrowserChild.h"
#include "mozilla/layout/RemotePrintJobChild.h"
#include "mozilla/SpinEventLoopUntil.h"
#include "mozilla/Unused.h"
#include "nsIDocShell.h"
#include "nsIPrintingPromptService.h"
#include "nsIPrintSession.h"
#include "nsPIDOMWindow.h"
#include "nsPrintSettingsService.h"
#include "nsServiceManagerUtils.h"
#include "PrintProgressDialogChild.h"
#include "PrintSettingsDialogChild.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::embedding;
using namespace mozilla::layout;
static StaticRefPtr<nsPrintingProxy> sPrintingProxyInstance;
NS_IMPL_ISUPPORTS(nsPrintingProxy, nsIPrintingPromptService)
nsPrintingProxy::nsPrintingProxy() = default;
nsPrintingProxy::~nsPrintingProxy() = default;
/* static */
already_AddRefed<nsPrintingProxy> nsPrintingProxy::GetInstance() {
if (!sPrintingProxyInstance) {
sPrintingProxyInstance = new nsPrintingProxy();
if (!sPrintingProxyInstance) {
return nullptr;
}
nsresult rv = sPrintingProxyInstance->Init();
if (NS_FAILED(rv)) {
sPrintingProxyInstance = nullptr;
return nullptr;
}
ClearOnShutdown(&sPrintingProxyInstance);
}
RefPtr<nsPrintingProxy> inst = sPrintingProxyInstance.get();
return inst.forget();
}
nsresult nsPrintingProxy::Init() {
mozilla::Unused << ContentChild::GetSingleton()->SendPPrintingConstructor(
this);
return NS_OK;
}
NS_IMETHODIMP
nsPrintingProxy::ShowPrintDialog(mozIDOMWindowProxy* parent,
nsIPrintSettings* printSettings) {
NS_ENSURE_ARG(printSettings);
// If parent is null we are just being called to retrieve the print settings
// from the printer in the parent for print preview.
BrowserChild* pBrowser = nullptr;
if (parent) {
// Get the BrowserChild for this nsIDOMWindow, which we can then pass up to
// the parent.
nsCOMPtr<nsPIDOMWindowOuter> pwin = nsPIDOMWindowOuter::From(parent);
NS_ENSURE_STATE(pwin);
nsCOMPtr<nsIDocShell> docShell = pwin->GetDocShell();
NS_ENSURE_STATE(docShell);
nsCOMPtr<nsIBrowserChild> tabchild = docShell->GetBrowserChild();
NS_ENSURE_STATE(tabchild);
pBrowser = static_cast<BrowserChild*>(tabchild.get());
}
// Next, serialize the nsIWebBrowserPrint and nsIPrintSettings we were given.
nsresult rv = NS_OK;
nsCOMPtr<nsIPrintSettingsService> printSettingsSvc =
do_GetService("@mozilla.org/gfx/printsettings-service;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
PrintData inSettings;
rv = printSettingsSvc->SerializeToPrintData(printSettings, &inSettings);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIPrintSession> session;
rv = printSettings->GetPrintSession(getter_AddRefs(session));
if (NS_SUCCEEDED(rv) && session) {
inSettings.remotePrintJobChild() = session->GetRemotePrintJob();
}
// Now, the waiting game. The parent process should be showing
// the printing dialog soon. In the meantime, we need to spin a
// nested event loop while we wait for the results of the dialog
// to be returned to us.
RefPtr<PrintSettingsDialogChild> dialog = new PrintSettingsDialogChild();
SendPPrintSettingsDialogConstructor(dialog);
mozilla::Unused << SendShowPrintDialog(dialog, pBrowser, inSettings);
SpinEventLoopUntil([&, dialog]() { return dialog->returned(); });
rv = dialog->result();
NS_ENSURE_SUCCESS(rv, rv);
rv = printSettingsSvc->DeserializeToPrintSettings(dialog->data(),
printSettings);
return NS_OK;
}
NS_IMETHODIMP
nsPrintingProxy::ShowPrintProgressDialog(
mozIDOMWindowProxy* parent,
nsIPrintSettings* printSettings, // ok to be null
nsIObserver* openDialogObserver, // ok to be null
bool isForPrinting, nsIWebProgressListener** webProgressListener,
nsIPrintProgressParams** printProgressParams, bool* notifyOnOpen) {
NS_ENSURE_ARG(parent);
NS_ENSURE_ARG(webProgressListener);
NS_ENSURE_ARG(printProgressParams);
NS_ENSURE_ARG(notifyOnOpen);
// Get the BrowserChild for this nsIDOMWindow, which we can then pass up to
// the parent.
nsCOMPtr<nsPIDOMWindowOuter> pwin = nsPIDOMWindowOuter::From(parent);
NS_ENSURE_STATE(pwin);
nsCOMPtr<nsIDocShell> docShell = pwin->GetDocShell();
NS_ENSURE_STATE(docShell);
nsCOMPtr<nsIBrowserChild> tabchild = docShell->GetBrowserChild();
BrowserChild* pBrowser = static_cast<BrowserChild*>(tabchild.get());
RefPtr<PrintProgressDialogChild> dialogChild =
new PrintProgressDialogChild(openDialogObserver, printSettings);
SendPPrintProgressDialogConstructor(dialogChild);
// Get the RemotePrintJob if we have one available.
RefPtr<RemotePrintJobChild> remotePrintJob;
if (printSettings) {
nsCOMPtr<nsIPrintSession> printSession;
nsresult rv = printSettings->GetPrintSession(getter_AddRefs(printSession));
if (NS_SUCCEEDED(rv) && printSession) {
remotePrintJob = printSession->GetRemotePrintJob();
}
}
// NOTE: We set notifyOnOpen to true unconditionally. If the parent process
// would get `false` for notifyOnOpen, then it will synthesize a notification
// which will be sent asynchronously down to the child.
*notifyOnOpen = true;
mozilla::Unused << SendShowProgress(pBrowser, dialogChild, remotePrintJob,
isForPrinting);
// If we have a RemotePrintJob that will be being used as a more general
// forwarder for print progress listeners. Once we always have one we can
// remove the interface from PrintProgressDialogChild.
if (!remotePrintJob) {
NS_ADDREF(*webProgressListener = dialogChild);
}
NS_ADDREF(*printProgressParams = dialogChild);
return NS_OK;
}
NS_IMETHODIMP
nsPrintingProxy::ShowPageSetupDialog(mozIDOMWindowProxy* parent,
nsIPrintSettings* printSettings) {
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult nsPrintingProxy::SavePrintSettings(nsIPrintSettings* aPS,
bool aUsePrinterNamePrefix,
uint32_t aFlags) {
nsresult rv;
nsCOMPtr<nsIPrintSettingsService> printSettingsSvc =
do_GetService("@mozilla.org/gfx/printsettings-service;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
PrintData settings;
rv = printSettingsSvc->SerializeToPrintData(aPS, &settings);
NS_ENSURE_SUCCESS(rv, rv);
Unused << SendSavePrintSettings(settings, aUsePrinterNamePrefix, aFlags, &rv);
return rv;
}
PPrintProgressDialogChild* nsPrintingProxy::AllocPPrintProgressDialogChild() {
// The parent process will never initiate the PPrintProgressDialog
// protocol connection, so no need to provide an allocator here.
MOZ_ASSERT_UNREACHABLE(
"Allocator for PPrintProgressDialogChild should not "
"be called on nsPrintingProxy.");
return nullptr;
}
bool nsPrintingProxy::DeallocPPrintProgressDialogChild(
PPrintProgressDialogChild* aActor) {
// The PrintProgressDialogChild implements refcounting, and
// will take itself out.
return true;
}
PPrintSettingsDialogChild* nsPrintingProxy::AllocPPrintSettingsDialogChild() {
// The parent process will never initiate the PPrintSettingsDialog
// protocol connection, so no need to provide an allocator here.
MOZ_ASSERT_UNREACHABLE(
"Allocator for PPrintSettingsDialogChild should not "
"be called on nsPrintingProxy.");
return nullptr;
}
bool nsPrintingProxy::DeallocPPrintSettingsDialogChild(
PPrintSettingsDialogChild* aActor) {
// The PrintSettingsDialogChild implements refcounting, and
// will take itself out.
return true;
}
already_AddRefed<PRemotePrintJobChild>
nsPrintingProxy::AllocPRemotePrintJobChild() {
RefPtr<RemotePrintJobChild> remotePrintJob = new RemotePrintJobChild();
return remotePrintJob.forget();
}
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