1 files changed, 398 insertions, 0 deletions
diff --git a/toolkit/components/alerts/nsXULAlerts.cpp b/toolkit/components/alerts/nsXULAlerts.cpp
new file mode 100644
index 000000000..882617637
--- /dev/null
+++ b/toolkit/components/alerts/nsXULAlerts.cpp
@@ -0,0 +1,398 @@
+/* -*- Mode: C++; tab-width: 2; 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 "nsXULAlerts.h"
+
+#include "nsArray.h"
+#include "nsComponentManagerUtils.h"
+#include "nsCOMPtr.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/LookAndFeel.h"
+#include "mozilla/dom/Notification.h"
+#include "mozilla/Unused.h"
+#include "nsIServiceManager.h"
+#include "nsISupportsPrimitives.h"
+#include "nsPIDOMWindow.h"
+#include "nsIWindowWatcher.h"
+
+using namespace mozilla;
+using mozilla::dom::NotificationTelemetryService;
+
+#define ALERT_CHROME_URL "chrome://global/content/alerts/alert.xul"
+
+namespace {
+StaticRefPtr<nsXULAlerts> gXULAlerts;
+} // anonymous namespace
+
+NS_IMPL_CYCLE_COLLECTION(nsXULAlertObserver, mAlertWindow)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXULAlertObserver)
+  NS_INTERFACE_MAP_ENTRY(nsIObserver)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsXULAlertObserver)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsXULAlertObserver)
+
+NS_IMETHODIMP
+nsXULAlertObserver::Observe(nsISupports* aSubject, const char* aTopic,
+                            const char16_t* aData)
+{
+  if (!strcmp("alertfinished", aTopic)) {
+    mozIDOMWindowProxy* currentAlert = mXULAlerts->mNamedWindows.GetWeak(mAlertName);
+    // The window in mNamedWindows might be a replacement, thus it should only
+    // be removed if it is the same window that is associated with this listener.
+    if (currentAlert == mAlertWindow) {
+      mXULAlerts->mNamedWindows.Remove(mAlertName);
+
+      if (mIsPersistent) {
+        mXULAlerts->PersistentAlertFinished();
+      }
+    }
+  }
+
+  nsresult rv = NS_OK;
+  if (mObserver) {
+    rv = mObserver->Observe(aSubject, aTopic, aData);
+  }
+  return rv;
+}
+
+// We don't cycle collect nsXULAlerts since gXULAlerts will keep the instance
+// alive till shutdown anyway.
+NS_IMPL_ISUPPORTS(nsXULAlerts, nsIAlertsService, nsIAlertsDoNotDisturb, nsIAlertsIconURI)
+
+/* static */ already_AddRefed<nsXULAlerts>
+nsXULAlerts::GetInstance()
+{
+  // Gecko on Android does not fully support XUL windows.
+#ifndef MOZ_WIDGET_ANDROID
+  if (!gXULAlerts) {
+    gXULAlerts = new nsXULAlerts();
+    ClearOnShutdown(&gXULAlerts);
+  }
+#endif // MOZ_WIDGET_ANDROID
+  RefPtr<nsXULAlerts> instance = gXULAlerts.get();
+  return instance.forget();
+}
+
+void
+nsXULAlerts::PersistentAlertFinished()
+{
+  MOZ_ASSERT(mPersistentAlertCount);
+  mPersistentAlertCount--;
+
+  // Show next pending persistent alert if any.
+  if (!mPendingPersistentAlerts.IsEmpty()) {
+    ShowAlertWithIconURI(mPendingPersistentAlerts[0].mAlert,
+                         mPendingPersistentAlerts[0].mListener,
+                         nullptr);
+    mPendingPersistentAlerts.RemoveElementAt(0);
+  }
+}
+
+NS_IMETHODIMP
+nsXULAlerts::ShowAlertNotification(const nsAString& aImageUrl, const nsAString& aAlertTitle,
+                                   const nsAString& aAlertText, bool aAlertTextClickable,
+                                   const nsAString& aAlertCookie, nsIObserver* aAlertListener,
+                                   const nsAString& aAlertName, const nsAString& aBidi,
+                                   const nsAString& aLang, const nsAString& aData,
+                                   nsIPrincipal* aPrincipal, bool aInPrivateBrowsing,
+                                   bool aRequireInteraction)
+{
+  nsCOMPtr<nsIAlertNotification> alert =
+    do_CreateInstance(ALERT_NOTIFICATION_CONTRACTID);
+  NS_ENSURE_TRUE(alert, NS_ERROR_FAILURE);
+  nsresult rv = alert->Init(aAlertName, aImageUrl, aAlertTitle,
+                            aAlertText, aAlertTextClickable,
+                            aAlertCookie, aBidi, aLang, aData,
+                            aPrincipal, aInPrivateBrowsing,
+                            aRequireInteraction);
+  NS_ENSURE_SUCCESS(rv, rv);
+  return ShowAlert(alert, aAlertListener);
+}
+
+NS_IMETHODIMP
+nsXULAlerts::ShowPersistentNotification(const nsAString& aPersistentData,
+                                        nsIAlertNotification* aAlert,
+                                        nsIObserver* aAlertListener)
+{
+  return ShowAlert(aAlert, aAlertListener);
+}
+
+NS_IMETHODIMP
+nsXULAlerts::ShowAlert(nsIAlertNotification* aAlert,
+                       nsIObserver* aAlertListener)
+{
+  nsAutoString name;
+  nsresult rv = aAlert->GetName(name);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // If there is a pending alert with the same name in the list of
+  // pending alerts, replace it.
+  if (!mPendingPersistentAlerts.IsEmpty()) {
+    for (uint32_t i = 0; i < mPendingPersistentAlerts.Length(); i++) {
+      nsAutoString pendingAlertName;
+      nsCOMPtr<nsIAlertNotification> pendingAlert = mPendingPersistentAlerts[i].mAlert;
+      rv = pendingAlert->GetName(pendingAlertName);
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      if (pendingAlertName.Equals(name)) {
+        nsAutoString cookie;
+        rv = pendingAlert->GetCookie(cookie);
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        if (mPendingPersistentAlerts[i].mListener) {
+          rv = mPendingPersistentAlerts[i].mListener->Observe(nullptr, "alertfinished", cookie.get());
+          NS_ENSURE_SUCCESS(rv, rv);
+        }
+
+        mPendingPersistentAlerts[i].Init(aAlert, aAlertListener);
+        return NS_OK;
+      }
+    }
+  }
+
+  bool requireInteraction;
+  rv = aAlert->GetRequireInteraction(&requireInteraction);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (requireInteraction &&
+      !mNamedWindows.Contains(name) &&
+      static_cast<int32_t>(mPersistentAlertCount) >=
+        Preferences::GetInt("dom.webnotifications.requireinteraction.count", 0)) {
+    PendingAlert* pa = mPendingPersistentAlerts.AppendElement();
+    pa->Init(aAlert, aAlertListener);
+    return NS_OK;
+  } else {
+    return ShowAlertWithIconURI(aAlert, aAlertListener, nullptr);
+  }
+}
+
+NS_IMETHODIMP
+nsXULAlerts::ShowAlertWithIconURI(nsIAlertNotification* aAlert,
+                                  nsIObserver* aAlertListener,
+                                  nsIURI* aIconURI)
+{
+  bool inPrivateBrowsing;
+  nsresult rv = aAlert->GetInPrivateBrowsing(&inPrivateBrowsing);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoString cookie;
+  rv = aAlert->GetCookie(cookie);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (mDoNotDisturb) {
+    if (!inPrivateBrowsing) {
+      RefPtr<NotificationTelemetryService> telemetry =
+        NotificationTelemetryService::GetInstance();
+      if (telemetry) {
+        // Record the number of unique senders for XUL alerts. The OS X and
+        // libnotify backends will fire `alertshow` even if "do not disturb"
+        // is enabled. In that case, `NotificationObserver` will record the
+        // sender.
+        nsCOMPtr<nsIPrincipal> principal;
+        if (NS_SUCCEEDED(aAlert->GetPrincipal(getter_AddRefs(principal)))) {
+          Unused << NS_WARN_IF(NS_FAILED(telemetry->RecordSender(principal)));
+        }
+      }
+    }
+    if (aAlertListener)
+      aAlertListener->Observe(nullptr, "alertfinished", cookie.get());
+    return NS_OK;
+  }
+
+  nsAutoString name;
+  rv = aAlert->GetName(name);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoString imageUrl;
+  rv = aAlert->GetImageURL(imageUrl);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoString title;
+  rv = aAlert->GetTitle(title);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoString text;
+  rv = aAlert->GetText(text);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool textClickable;
+  rv = aAlert->GetTextClickable(&textClickable);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoString bidi;
+  rv = aAlert->GetDir(bidi);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoString lang;
+  rv = aAlert->GetLang(lang);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoString source;
+  rv = aAlert->GetSource(source);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool requireInteraction;
+  rv = aAlert->GetRequireInteraction(&requireInteraction);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
+
+  nsCOMPtr<nsIMutableArray> argsArray = nsArray::Create();
+
+  // create scriptable versions of our strings that we can store in our nsIMutableArray....
+  nsCOMPtr<nsISupportsString> scriptableImageUrl (do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableImageUrl, NS_ERROR_FAILURE);
+
+  scriptableImageUrl->SetData(imageUrl);
+  rv = argsArray->AppendElement(scriptableImageUrl, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsString> scriptableAlertTitle (do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableAlertTitle, NS_ERROR_FAILURE);
+
+  scriptableAlertTitle->SetData(title);
+  rv = argsArray->AppendElement(scriptableAlertTitle, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsString> scriptableAlertText (do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableAlertText, NS_ERROR_FAILURE);
+
+  scriptableAlertText->SetData(text);
+  rv = argsArray->AppendElement(scriptableAlertText, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsPRBool> scriptableIsClickable (do_CreateInstance(NS_SUPPORTS_PRBOOL_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableIsClickable, NS_ERROR_FAILURE);
+
+  scriptableIsClickable->SetData(textClickable);
+  rv = argsArray->AppendElement(scriptableIsClickable, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsString> scriptableAlertCookie (do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableAlertCookie, NS_ERROR_FAILURE);
+
+  scriptableAlertCookie->SetData(cookie);
+  rv = argsArray->AppendElement(scriptableAlertCookie, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsPRInt32> scriptableOrigin (do_CreateInstance(NS_SUPPORTS_PRINT32_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableOrigin, NS_ERROR_FAILURE);
+
+  int32_t origin =
+    LookAndFeel::GetInt(LookAndFeel::eIntID_AlertNotificationOrigin);
+  scriptableOrigin->SetData(origin);
+
+  rv = argsArray->AppendElement(scriptableOrigin, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsString> scriptableBidi (do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableBidi, NS_ERROR_FAILURE);
+
+  scriptableBidi->SetData(bidi);
+  rv = argsArray->AppendElement(scriptableBidi, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsString> scriptableLang (do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableLang, NS_ERROR_FAILURE);
+
+  scriptableLang->SetData(lang);
+  rv = argsArray->AppendElement(scriptableLang, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsPRBool> scriptableRequireInteraction (do_CreateInstance(NS_SUPPORTS_PRBOOL_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableRequireInteraction, NS_ERROR_FAILURE);
+
+  scriptableRequireInteraction->SetData(requireInteraction);
+  rv = argsArray->AppendElement(scriptableRequireInteraction, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Alerts with the same name should replace the old alert in the same position.
+  // Provide the new alert window with a pointer to the replaced window so that
+  // it may take the same position.
+  nsCOMPtr<nsISupportsInterfacePointer> replacedWindow = do_CreateInstance(NS_SUPPORTS_INTERFACE_POINTER_CONTRACTID, &rv);
+  NS_ENSURE_TRUE(replacedWindow, NS_ERROR_FAILURE);
+  mozIDOMWindowProxy* previousAlert = mNamedWindows.GetWeak(name);
+  replacedWindow->SetData(previousAlert);
+  replacedWindow->SetDataIID(&NS_GET_IID(mozIDOMWindowProxy));
+  rv = argsArray->AppendElement(replacedWindow, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (requireInteraction) {
+    mPersistentAlertCount++;
+  }
+
+  // Add an observer (that wraps aAlertListener) to remove the window from
+  // mNamedWindows when it is closed.
+  nsCOMPtr<nsISupportsInterfacePointer> ifptr = do_CreateInstance(NS_SUPPORTS_INTERFACE_POINTER_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  RefPtr<nsXULAlertObserver> alertObserver = new nsXULAlertObserver(this, name, aAlertListener, requireInteraction);
+  nsCOMPtr<nsISupports> iSupports(do_QueryInterface(alertObserver));
+  ifptr->SetData(iSupports);
+  ifptr->SetDataIID(&NS_GET_IID(nsIObserver));
+  rv = argsArray->AppendElement(ifptr, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // The source contains the host and port of the site that sent the
+  // notification. It is empty for system alerts.
+  nsCOMPtr<nsISupportsString> scriptableAlertSource (do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableAlertSource, NS_ERROR_FAILURE);
+  scriptableAlertSource->SetData(source);
+  rv = argsArray->AppendElement(scriptableAlertSource, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISupportsCString> scriptableIconURL (do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID));
+  NS_ENSURE_TRUE(scriptableIconURL, NS_ERROR_FAILURE);
+  if (aIconURI) {
+    nsAutoCString iconURL;
+    rv = aIconURI->GetSpec(iconURL);
+    NS_ENSURE_SUCCESS(rv, rv);
+    scriptableIconURL->SetData(iconURL);
+  }
+  rv = argsArray->AppendElement(scriptableIconURL, /*weak =*/ false);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<mozIDOMWindowProxy> newWindow;
+  nsAutoCString features("chrome,dialog=yes,titlebar=no,popup=yes");
+  if (inPrivateBrowsing) {
+    features.AppendLiteral(",private");
+  }
+  rv = wwatch->OpenWindow(nullptr, ALERT_CHROME_URL, "_blank", features.get(),
+                          argsArray, getter_AddRefs(newWindow));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  mNamedWindows.Put(name, newWindow);
+  alertObserver->SetAlertWindow(newWindow);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXULAlerts::SetManualDoNotDisturb(bool aDoNotDisturb)
+{
+  mDoNotDisturb = aDoNotDisturb;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXULAlerts::GetManualDoNotDisturb(bool* aRetVal)
+{
+  *aRetVal = mDoNotDisturb;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXULAlerts::CloseAlert(const nsAString& aAlertName,
+                        nsIPrincipal* aPrincipal)
+{
+  mozIDOMWindowProxy* alert = mNamedWindows.GetWeak(aAlertName);
+  if (nsCOMPtr<nsPIDOMWindowOuter> domWindow = nsPIDOMWindowOuter::From(alert)) {
+    domWindow->DispatchCustomEvent(NS_LITERAL_STRING("XULAlertClose"));
+  }
+  return NS_OK;
+}
+