The Tor Browser: accessible/src/base/nsEventShell.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef _nsEventShell_H_

     7 #define _nsEventShell_H_

     9 #include "AccEvent.h"

    11 namespace mozilla {

    12 template<typename T> class StaticRefPtr;

    13 }

    14 class nsIPersistentProperties;

    16 /**

    17  * Used for everything about events.

    18  */

    19 class nsEventShell

    20 {

    21 public:

    23   /**

    24    * Fire the accessible event.

    25    */

    26   static void FireEvent(mozilla::a11y::AccEvent* aEvent);

    28   /**

    29    * Fire accessible event of the given type for the given accessible.

    30    *

    31    * @param  aEventType   [in] the event type

    32    * @param  aAccessible  [in] the event target

    33    */

    34   static void FireEvent(uint32_t aEventType,

    35                         mozilla::a11y::Accessible* aAccessible,

    36                         mozilla::a11y::EIsFromUserInput aIsFromUserInput = mozilla::a11y::eAutoDetect);

    38   /**

    39    * Fire state change event.

    40    */

    41   static void FireEvent(mozilla::a11y::Accessible* aTarget, uint64_t aState,

    42                         bool aIsEnabled, bool aIsFromUserInput)

    43   {

    44     nsRefPtr<mozilla::a11y::AccStateChangeEvent> stateChangeEvent =

    45       new mozilla::a11y::AccStateChangeEvent(aTarget, aState, aIsEnabled,

    46                                              (aIsFromUserInput ?

    47                                                mozilla::a11y::eFromUserInput :

    48                                                mozilla::a11y::eNoUserInput));

    49     FireEvent(stateChangeEvent);

    50   }

    52   /**

    53    * Append 'event-from-input' object attribute if the accessible event has

    54    * been fired just now for the given node.

    55    *

    56    * @param  aNode        [in] the DOM node

    57    * @param  aAttributes  [in, out] the attributes

    58    */

    59   static void GetEventAttributes(nsINode *aNode,

    60                                  nsIPersistentProperties *aAttributes);

    62 private:

    63   static mozilla::StaticRefPtr<nsINode> sEventTargetNode;

    64   static bool sEventFromUserInput;

    65 };

    67 #endif

The Tor Browser / file revision

accessible/src/base/nsEventShell.h@97036ab72558

accessible/src/base/nsEventShell.h