The Tor Browser: toolkit/system/gnome/nsAlertsIconListener.cpp@6474c204b198 (annotated)

toolkit/system/gnome/nsAlertsIconListener.cpp@6474c204b198 (annotated)

toolkit/system/gnome/nsAlertsIconListener.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- 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 "nsAlertsIconListener.h"
 #include "imgIContainer.h"
 #include "imgILoader.h"
 #include "imgIRequest.h"
 #include "nsNetUtil.h"
 #include "nsIImageToPixbuf.h"
 #include "nsIStringBundle.h"
 #include "nsIObserverService.h"
 #include "nsCRT.h"
 #include <dlfcn.h>
 #include <gdk/gdk.h>
 static bool gHasActions = false;
 static bool gHasCaps = false;
 void* nsAlertsIconListener::libNotifyHandle = nullptr;
 bool nsAlertsIconListener::libNotifyNotAvail = false;
 nsAlertsIconListener::notify_is_initted_t nsAlertsIconListener::notify_is_initted = nullptr;
 nsAlertsIconListener::notify_init_t nsAlertsIconListener::notify_init = nullptr;
 nsAlertsIconListener::notify_get_server_caps_t nsAlertsIconListener::notify_get_server_caps = nullptr;
 nsAlertsIconListener::notify_notification_new_t nsAlertsIconListener::notify_notification_new = nullptr;
 nsAlertsIconListener::notify_notification_show_t nsAlertsIconListener::notify_notification_show = nullptr;
 nsAlertsIconListener::notify_notification_set_icon_from_pixbuf_t nsAlertsIconListener::notify_notification_set_icon_from_pixbuf = nullptr;
 nsAlertsIconListener::notify_notification_add_action_t nsAlertsIconListener::notify_notification_add_action = nullptr;
 static void notify_action_cb(NotifyNotification *notification,
                              gchar *action, gpointer user_data)
 {
   nsAlertsIconListener* alert = static_cast<nsAlertsIconListener*> (user_data);
   alert->SendCallback();
 }
 static void notify_closed_marshal(GClosure* closure,
                                   GValue* return_value,
                                   guint n_param_values,
                                   const GValue* param_values,
                                   gpointer invocation_hint,
                                   gpointer marshal_data)
 {
   NS_ABORT_IF_FALSE(n_param_values >= 1, "No object in params");
   nsAlertsIconListener* alert =
     static_cast<nsAlertsIconListener*>(closure->data);
   alert->SendClosed();
   NS_RELEASE(alert);
 }
 NS_IMPL_ISUPPORTS(nsAlertsIconListener, imgINotificationObserver,
                   nsIObserver, nsISupportsWeakReference)
 nsAlertsIconListener::nsAlertsIconListener()
 : mLoadedFrame(false),
   mNotification(nullptr)
 {
   if (!libNotifyHandle && !libNotifyNotAvail) {
     libNotifyHandle = dlopen("libnotify.so.4", RTLD_LAZY);
     if (!libNotifyHandle) {
       libNotifyHandle = dlopen("libnotify.so.1", RTLD_LAZY);
       if (!libNotifyHandle) {
         libNotifyNotAvail = true;
         return;
       }
     }
     notify_is_initted = (notify_is_initted_t)dlsym(libNotifyHandle, "notify_is_initted");
     notify_init = (notify_init_t)dlsym(libNotifyHandle, "notify_init");
     notify_get_server_caps = (notify_get_server_caps_t)dlsym(libNotifyHandle, "notify_get_server_caps");
     notify_notification_new = (notify_notification_new_t)dlsym(libNotifyHandle, "notify_notification_new");
     notify_notification_show = (notify_notification_show_t)dlsym(libNotifyHandle, "notify_notification_show");
     notify_notification_set_icon_from_pixbuf = (notify_notification_set_icon_from_pixbuf_t)dlsym(libNotifyHandle, "notify_notification_set_icon_from_pixbuf");
     notify_notification_add_action = (notify_notification_add_action_t)dlsym(libNotifyHandle, "notify_notification_add_action");
     if (!notify_is_initted || !notify_init || !notify_get_server_caps || !notify_notification_new || !notify_notification_show || !notify_notification_set_icon_from_pixbuf || !notify_notification_add_action) {
       dlclose(libNotifyHandle);
       libNotifyHandle = nullptr;
     }
   }
 }
 nsAlertsIconListener::~nsAlertsIconListener()
 {
   if (mIconRequest)
     mIconRequest->CancelAndForgetObserver(NS_BINDING_ABORTED);
   // Don't dlclose libnotify as it uses atexit().
 }
 NS_IMETHODIMP
 nsAlertsIconListener::Notify(imgIRequest *aRequest, int32_t aType, const nsIntRect* aData)
 {
   if (aType == imgINotificationObserver::LOAD_COMPLETE) {
     return OnStopRequest(aRequest);
   }
   if (aType == imgINotificationObserver::FRAME_COMPLETE) {
     return OnStopFrame(aRequest);
   }
   return NS_OK;
 }
 nsresult
 nsAlertsIconListener::OnStopRequest(imgIRequest* aRequest)
 {
   uint32_t imgStatus = imgIRequest::STATUS_ERROR;
   nsresult rv = aRequest->GetImageStatus(&imgStatus);
   NS_ENSURE_SUCCESS(rv, rv);
   if (imgStatus == imgIRequest::STATUS_ERROR && !mLoadedFrame) {
     // We have an error getting the image. Display the notification with no icon.
     ShowAlert(nullptr);
   }
   if (mIconRequest) {
     mIconRequest->Cancel(NS_BINDING_ABORTED);
     mIconRequest = nullptr;
   }
   return NS_OK;
 }
 nsresult
 nsAlertsIconListener::OnStopFrame(imgIRequest* aRequest)
 {
   if (aRequest != mIconRequest)
     return NS_ERROR_FAILURE;
   if (mLoadedFrame)
     return NS_OK; // only use one frame
   nsCOMPtr<imgIContainer> image;
   nsresult rv = aRequest->GetImage(getter_AddRefs(image));
   if (NS_FAILED(rv))
     return rv;
   nsCOMPtr<nsIImageToPixbuf> imgToPixbuf =
     do_GetService("@mozilla.org/widget/image-to-gdk-pixbuf;1");
   GdkPixbuf* imagePixbuf = imgToPixbuf->ConvertImageToPixbuf(image);
   if (!imagePixbuf)
     return NS_ERROR_FAILURE;
   ShowAlert(imagePixbuf);
   g_object_unref(imagePixbuf);
   mLoadedFrame = true;
   return NS_OK;
 }
 nsresult
 nsAlertsIconListener::ShowAlert(GdkPixbuf* aPixbuf)
 {
   mNotification = notify_notification_new(mAlertTitle.get(), mAlertText.get(),
                                           nullptr, nullptr);
   if (!mNotification)
     return NS_ERROR_OUT_OF_MEMORY;
   if (aPixbuf)
     notify_notification_set_icon_from_pixbuf(mNotification, aPixbuf);
   NS_ADDREF(this);
   if (mAlertHasAction) {
     // What we put as the label doesn't matter here, if the action
     // string is "default" then that makes the entire bubble clickable
     // rather than creating a button.
     notify_notification_add_action(mNotification, "default", "Activate",
                                    notify_action_cb, this, nullptr);
   }
   // Fedora 10 calls NotifyNotification "closed" signal handlers with a
   // different signature, so a marshaller is used instead of a C callback to
   // get the user_data (this) in a parseable format.  |closure| is created
   // with a floating reference, which gets sunk by g_signal_connect_closure().
   GClosure* closure = g_closure_new_simple(sizeof(GClosure), this);
   g_closure_set_marshal(closure, notify_closed_marshal);
   mClosureHandler = g_signal_connect_closure(mNotification, "closed", closure, FALSE);
   gboolean result = notify_notification_show(mNotification, nullptr);
   return result ? NS_OK : NS_ERROR_FAILURE;
 }
 nsresult
 nsAlertsIconListener::StartRequest(const nsAString & aImageUrl)
 {
   if (mIconRequest) {
     // Another icon request is already in flight.  Kill it.
     mIconRequest->Cancel(NS_BINDING_ABORTED);
     mIconRequest = nullptr;
   }
   nsCOMPtr<nsIURI> imageUri;
   NS_NewURI(getter_AddRefs(imageUri), aImageUrl);
   if (!imageUri)
     return ShowAlert(nullptr);
   nsCOMPtr<imgILoader> il(do_GetService("@mozilla.org/image/loader;1"));
   if (!il)
     return ShowAlert(nullptr);
   // XXX: Hrmm.... Bypass cache, or isolate to imageUrl?
   return il->LoadImageXPCOM(imageUri, imageURI, nullptr, nullptr, nullptr,
                             this, nullptr, nsIRequest::LOAD_NORMAL, nullptr,
                             nullptr, getter_AddRefs(mIconRequest));
 }
 void
 nsAlertsIconListener::SendCallback()
 {
   if (mAlertListener)
     mAlertListener->Observe(nullptr, "alertclickcallback", mAlertCookie.get());
 }
 void
 nsAlertsIconListener::SendClosed()
 {
   if (mNotification) {
     g_object_unref(mNotification);
     mNotification = nullptr;
   }
   if (mAlertListener)
     mAlertListener->Observe(nullptr, "alertfinished", mAlertCookie.get());
 }
 NS_IMETHODIMP
 nsAlertsIconListener::Observe(nsISupports *aSubject, const char *aTopic,
                               const char16_t *aData) {
   // We need to close any open notifications upon application exit, otherwise
   // we will leak since libnotify holds a ref for us.
   if (!nsCRT::strcmp(aTopic, "quit-application") && mNotification) {
     g_signal_handler_disconnect(mNotification, mClosureHandler);
     g_object_unref(mNotification);
     mNotification = nullptr;
     Release(); // equivalent to NS_RELEASE(this)
   }
   return NS_OK;
 }
 nsresult
 nsAlertsIconListener::InitAlertAsync(const nsAString & aImageUrl,
                                      const nsAString & aAlertTitle,
                                      const nsAString & aAlertText,
                                      bool aAlertTextClickable,
                                      const nsAString & aAlertCookie,
                                      nsIObserver * aAlertListener)
 {
   if (!libNotifyHandle)
     return NS_ERROR_FAILURE;
   if (!notify_is_initted()) {
     // Give the name of this application to libnotify
     nsCOMPtr<nsIStringBundleService> bundleService =
       do_GetService(NS_STRINGBUNDLE_CONTRACTID);
     nsAutoCString appShortName;
     if (bundleService) {
       nsCOMPtr<nsIStringBundle> bundle;
       bundleService->CreateBundle("chrome://branding/locale/brand.properties",
                                   getter_AddRefs(bundle));
       nsAutoString appName;
       if (bundle) {
         bundle->GetStringFromName(MOZ_UTF16("brandShortName"),
                                   getter_Copies(appName));
         appShortName = NS_ConvertUTF16toUTF8(appName);
       } else {
         NS_WARNING("brand.properties not present, using default application name");
         appShortName.AssignLiteral("Mozilla");
       }
     } else {
       appShortName.AssignLiteral("Mozilla");
     }
     if (!notify_init(appShortName.get()))
       return NS_ERROR_FAILURE;
     GList *server_caps = notify_get_server_caps();
     if (server_caps) {
       gHasCaps = true;
       for (GList* cap = server_caps; cap != nullptr; cap = cap->next) {
         if (!strcmp((char*) cap->data, "actions")) {
           gHasActions = true;
           break;
         }
       }
       g_list_foreach(server_caps, (GFunc)g_free, nullptr);
       g_list_free(server_caps);
     }
   }
   if (!gHasCaps) {
     // if notify_get_server_caps() failed above we need to assume
     // there is no notification-server to display anything
     return NS_ERROR_FAILURE;
   }
   if (!gHasActions && aAlertTextClickable)
     return NS_ERROR_FAILURE; // No good, fallback to XUL
   nsCOMPtr<nsIObserverService> obsServ =
       do_GetService("@mozilla.org/observer-service;1");
   if (obsServ)
     obsServ->AddObserver(this, "quit-application", true);
   // Workaround for a libnotify bug - blank titles aren't dealt with
   // properly so we use a space
   if (aAlertTitle.IsEmpty()) {
     mAlertTitle = NS_LITERAL_CSTRING(" ");
   } else {
     mAlertTitle = NS_ConvertUTF16toUTF8(aAlertTitle);
   }
   mAlertText = NS_ConvertUTF16toUTF8(aAlertText);
   mAlertHasAction = aAlertTextClickable;
   mAlertListener = aAlertListener;
   mAlertCookie = aAlertCookie;
   return StartRequest(aImageUrl);
 }

The Tor Browser / annotate

toolkit/system/gnome/nsAlertsIconListener.cpp@6474c204b198 (annotated)

toolkit/system/gnome/nsAlertsIconListener.cpp