mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 05:35:31 +00:00
36ead639f1
It doesn't make sense to check this in a static method of EventStateManager.cpp. Instead, it should be a class method of WidgetEvent. Then, everybody can check this in everywhere. This patch adds mFlags.mNoCrossProcessBoundaryForwarding because when it's true, any events shouldn't be sent to remote process. MozReview-Commit-ID: oCuxAwotDA --HG-- extra : rebase_source : 0de8d65f83924859a38c513aff8da17d8571774d
1214 lines
41 KiB
C++
1214 lines
41 KiB
C++
/* -*- 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/. */
|
|
|
|
#ifndef mozilla_BasicEvents_h__
|
|
#define mozilla_BasicEvents_h__
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "mozilla/dom/EventTarget.h"
|
|
#include "mozilla/EventForwards.h"
|
|
#include "mozilla/TimeStamp.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIAtom.h"
|
|
#include "nsISupportsImpl.h"
|
|
#include "nsIWidget.h"
|
|
#include "nsString.h"
|
|
#include "Units.h"
|
|
|
|
namespace IPC {
|
|
template<typename T>
|
|
struct ParamTraits;
|
|
} // namespace IPC
|
|
|
|
namespace mozilla {
|
|
|
|
/******************************************************************************
|
|
* mozilla::BaseEventFlags
|
|
*
|
|
* BaseEventFlags must be a POD struct for safe to use memcpy (including
|
|
* in ParamTraits<BaseEventFlags>). So don't make virtual methods, constructor,
|
|
* destructor and operators.
|
|
* This is necessary for VC which is NOT C++0x compiler.
|
|
******************************************************************************/
|
|
|
|
struct BaseEventFlags
|
|
{
|
|
public:
|
|
// If mIsTrusted is true, the event is a trusted event. Otherwise, it's
|
|
// an untrusted event.
|
|
bool mIsTrusted : 1;
|
|
// If mInBubblingPhase is true, the event is in bubbling phase or target
|
|
// phase.
|
|
bool mInBubblingPhase : 1;
|
|
// If mInCapturePhase is true, the event is in capture phase or target phase.
|
|
bool mInCapturePhase : 1;
|
|
// If mInSystemGroup is true, the event is being dispatched in system group.
|
|
bool mInSystemGroup: 1;
|
|
// If mCancelable is true, the event can be consumed. I.e., calling
|
|
// dom::Event::PreventDefault() can prevent the default action.
|
|
bool mCancelable : 1;
|
|
// If mBubbles is true, the event can bubble. Otherwise, cannot be handled
|
|
// in bubbling phase.
|
|
bool mBubbles : 1;
|
|
// If mPropagationStopped is true, dom::Event::StopPropagation() or
|
|
// dom::Event::StopImmediatePropagation() has been called.
|
|
bool mPropagationStopped : 1;
|
|
// If mImmediatePropagationStopped is true,
|
|
// dom::Event::StopImmediatePropagation() has been called.
|
|
// Note that mPropagationStopped must be true when this is true.
|
|
bool mImmediatePropagationStopped : 1;
|
|
// If mDefaultPrevented is true, the event has been consumed.
|
|
// E.g., dom::Event::PreventDefault() has been called or
|
|
// the default action has been performed.
|
|
bool mDefaultPrevented : 1;
|
|
// If mDefaultPreventedByContent is true, the event has been
|
|
// consumed by content.
|
|
// Note that mDefaultPrevented must be true when this is true.
|
|
bool mDefaultPreventedByContent : 1;
|
|
// If mDefaultPreventedByChrome is true, the event has been
|
|
// consumed by chrome.
|
|
// Note that mDefaultPrevented must be true when this is true.
|
|
bool mDefaultPreventedByChrome : 1;
|
|
// mMultipleActionsPrevented may be used when default handling don't want to
|
|
// be prevented, but only one of the event targets should handle the event.
|
|
// For example, when a <label> element is in another <label> element and
|
|
// the first <label> element is clicked, that one may set this true.
|
|
// Then, the second <label> element won't handle the event.
|
|
bool mMultipleActionsPrevented : 1;
|
|
// If mIsBeingDispatched is true, the DOM event created from the event is
|
|
// dispatching into the DOM tree and not completed.
|
|
bool mIsBeingDispatched : 1;
|
|
// If mDispatchedAtLeastOnce is true, the event has been dispatched
|
|
// as a DOM event and the dispatch has been completed.
|
|
bool mDispatchedAtLeastOnce : 1;
|
|
// If mIsSynthesizedForTests is true, the event has been synthesized for
|
|
// automated tests or something hacky approach of an add-on.
|
|
bool mIsSynthesizedForTests : 1;
|
|
// If mExceptionWasRaised is true, one of the event handlers has raised an
|
|
// exception.
|
|
bool mExceptionWasRaised : 1;
|
|
// If mRetargetToNonNativeAnonymous is true and the target is in a non-native
|
|
// native anonymous subtree, the event target is set to mOriginalTarget.
|
|
bool mRetargetToNonNativeAnonymous : 1;
|
|
// If mNoCrossProcessBoundaryForwarding is true, the event is not allowed to
|
|
// cross process boundary.
|
|
bool mNoCrossProcessBoundaryForwarding : 1;
|
|
// If mNoContentDispatch is true, the event is never dispatched to the
|
|
// event handlers which are added to the contents, onfoo attributes and
|
|
// properties. Note that this flag is ignored when
|
|
// EventChainPreVisitor::mForceContentDispatch is set true. For exapmle,
|
|
// window and document object sets it true. Therefore, web applications
|
|
// can handle the event if they add event listeners to the window or the
|
|
// document.
|
|
// XXX This is an ancient and broken feature, don't use this for new bug
|
|
// as far as possible.
|
|
bool mNoContentDispatch : 1;
|
|
// If mOnlyChromeDispatch is true, the event is dispatched to only chrome.
|
|
bool mOnlyChromeDispatch : 1;
|
|
// If mOnlySystemGroupDispatchInContent is true, event listeners added to
|
|
// the default group for non-chrome EventTarget won't be called.
|
|
// Be aware, if this is true, EventDispatcher needs to check if each event
|
|
// listener is added to chrome node, so, don't set this to true for the
|
|
// events which are fired a lot of times like eMouseMove.
|
|
bool mOnlySystemGroupDispatchInContent : 1;
|
|
// If mWantReplyFromContentProcess is true, the event will be redispatched
|
|
// in the parent process after the content process has handled it. Useful
|
|
// for when the parent process need the know first how the event was used
|
|
// by content before handling it itself.
|
|
bool mWantReplyFromContentProcess : 1;
|
|
// The event's action will be handled by APZ. The main thread should not
|
|
// perform its associated action. This is currently only relevant for
|
|
// wheel and touch events.
|
|
bool mHandledByAPZ : 1;
|
|
// True if the event is currently being handled by an event listener that
|
|
// was registered as a passive listener.
|
|
bool mInPassiveListener: 1;
|
|
// If mComposed is true, the event fired by nodes in shadow DOM can cross the
|
|
// boundary of shadow DOM and light DOM.
|
|
bool mComposed : 1;
|
|
// Similar to mComposed. Set it to true to allow events cross the boundary
|
|
// between native non-anonymous content and native anonymouse content
|
|
bool mComposedInNativeAnonymousContent : 1;
|
|
// Set to true for events which are suppressed or delayed so that later a
|
|
// DelayedEvent of it is dispatched. This is used when parent side process
|
|
// the key event after content side, and may drop the event if the event
|
|
// was suppressed or delayed in contents side.
|
|
// It is also set to true for the events (in a DelayedInputEvent), which will
|
|
// be dispatched afterwards.
|
|
bool mIsSuppressedOrDelayed : 1;
|
|
|
|
// If the event is being handled in target phase, returns true.
|
|
inline bool InTargetPhase() const
|
|
{
|
|
return (mInBubblingPhase && mInCapturePhase);
|
|
}
|
|
|
|
/**
|
|
* Helper methods for methods of DOM Event.
|
|
*/
|
|
inline void StopPropagation()
|
|
{
|
|
mPropagationStopped = true;
|
|
}
|
|
inline void StopImmediatePropagation()
|
|
{
|
|
StopPropagation();
|
|
mImmediatePropagationStopped = true;
|
|
}
|
|
inline void StopCrossProcessForwarding()
|
|
{
|
|
mNoCrossProcessBoundaryForwarding = true;
|
|
}
|
|
inline void PreventDefault(bool aCalledByDefaultHandler = true)
|
|
{
|
|
if (!mCancelable) {
|
|
return;
|
|
}
|
|
mDefaultPrevented = true;
|
|
// Note that even if preventDefault() has already been called by chrome,
|
|
// a call of preventDefault() by content needs to overwrite
|
|
// mDefaultPreventedByContent to true because in such case, defaultPrevented
|
|
// must be true when web apps check it after they call preventDefault().
|
|
if (aCalledByDefaultHandler) {
|
|
mDefaultPreventedByChrome = true;
|
|
} else {
|
|
mDefaultPreventedByContent = true;
|
|
}
|
|
}
|
|
// This should be used only before dispatching events into the DOM tree.
|
|
inline void PreventDefaultBeforeDispatch()
|
|
{
|
|
if (!mCancelable) {
|
|
return;
|
|
}
|
|
mDefaultPrevented = true;
|
|
}
|
|
inline bool DefaultPrevented() const
|
|
{
|
|
return mDefaultPrevented;
|
|
}
|
|
inline bool DefaultPreventedByContent() const
|
|
{
|
|
MOZ_ASSERT(!mDefaultPreventedByContent || DefaultPrevented());
|
|
return mDefaultPreventedByContent;
|
|
}
|
|
inline bool IsTrusted() const
|
|
{
|
|
return mIsTrusted;
|
|
}
|
|
inline bool PropagationStopped() const
|
|
{
|
|
return mPropagationStopped;
|
|
}
|
|
|
|
inline void Clear()
|
|
{
|
|
SetRawFlags(0);
|
|
}
|
|
// Get if either the instance's bit or the aOther's bit is true, the
|
|
// instance's bit becomes true. In other words, this works like:
|
|
// eventFlags |= aOther;
|
|
inline void Union(const BaseEventFlags& aOther)
|
|
{
|
|
RawFlags rawFlags = GetRawFlags() | aOther.GetRawFlags();
|
|
SetRawFlags(rawFlags);
|
|
}
|
|
|
|
private:
|
|
typedef uint32_t RawFlags;
|
|
|
|
inline void SetRawFlags(RawFlags aRawFlags)
|
|
{
|
|
static_assert(sizeof(BaseEventFlags) <= sizeof(RawFlags),
|
|
"mozilla::EventFlags must not be bigger than the RawFlags");
|
|
memcpy(this, &aRawFlags, sizeof(BaseEventFlags));
|
|
}
|
|
inline RawFlags GetRawFlags() const
|
|
{
|
|
RawFlags result = 0;
|
|
memcpy(&result, this, sizeof(BaseEventFlags));
|
|
return result;
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::EventFlags
|
|
******************************************************************************/
|
|
|
|
struct EventFlags : public BaseEventFlags
|
|
{
|
|
EventFlags()
|
|
{
|
|
Clear();
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetEventTime
|
|
******************************************************************************/
|
|
|
|
class WidgetEventTime
|
|
{
|
|
public:
|
|
// Elapsed time, in milliseconds, from a platform-specific zero time
|
|
// to the time the message was created
|
|
uint64_t mTime;
|
|
// Timestamp when the message was created. Set in parallel to 'time' until we
|
|
// determine if it is safe to drop 'time' (see bug 77992).
|
|
TimeStamp mTimeStamp;
|
|
|
|
WidgetEventTime()
|
|
: mTime(0)
|
|
, mTimeStamp(TimeStamp::Now())
|
|
{
|
|
}
|
|
|
|
WidgetEventTime(uint64_t aTime,
|
|
TimeStamp aTimeStamp)
|
|
: mTime(aTime)
|
|
, mTimeStamp(aTimeStamp)
|
|
{
|
|
}
|
|
|
|
void AssignEventTime(const WidgetEventTime& aOther)
|
|
{
|
|
mTime = aOther.mTime;
|
|
mTimeStamp = aOther.mTimeStamp;
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetEvent : public WidgetEventTime
|
|
{
|
|
private:
|
|
void SetDefaultCancelableAndBubbles()
|
|
{
|
|
switch (mClass) {
|
|
case eEditorInputEventClass:
|
|
mFlags.mCancelable = false;
|
|
mFlags.mBubbles = mFlags.mIsTrusted;
|
|
break;
|
|
case eMouseEventClass:
|
|
mFlags.mCancelable = (mMessage != eMouseEnter &&
|
|
mMessage != eMouseLeave);
|
|
mFlags.mBubbles = (mMessage != eMouseEnter &&
|
|
mMessage != eMouseLeave);
|
|
break;
|
|
case ePointerEventClass:
|
|
mFlags.mCancelable = (mMessage != ePointerEnter &&
|
|
mMessage != ePointerLeave &&
|
|
mMessage != ePointerCancel &&
|
|
mMessage != ePointerGotCapture &&
|
|
mMessage != ePointerLostCapture);
|
|
mFlags.mBubbles = (mMessage != ePointerEnter &&
|
|
mMessage != ePointerLeave);
|
|
break;
|
|
case eDragEventClass:
|
|
mFlags.mCancelable = (mMessage != eDragExit &&
|
|
mMessage != eDragLeave &&
|
|
mMessage != eDragEnd);
|
|
mFlags.mBubbles = true;
|
|
break;
|
|
case eSMILTimeEventClass:
|
|
mFlags.mCancelable = false;
|
|
mFlags.mBubbles = false;
|
|
break;
|
|
case eTransitionEventClass:
|
|
case eAnimationEventClass:
|
|
case eSVGZoomEventClass:
|
|
mFlags.mCancelable = false;
|
|
mFlags.mBubbles = true;
|
|
break;
|
|
case eCompositionEventClass:
|
|
// XXX compositionstart is cancelable in draft of DOM3 Events.
|
|
// However, it doesn't make sense for us, we cannot cancel
|
|
// composition when we send compositionstart event.
|
|
mFlags.mCancelable = false;
|
|
mFlags.mBubbles = true;
|
|
break;
|
|
default:
|
|
if (mMessage == eResize) {
|
|
mFlags.mCancelable = false;
|
|
} else {
|
|
mFlags.mCancelable = true;
|
|
}
|
|
mFlags.mBubbles = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
protected:
|
|
WidgetEvent(bool aIsTrusted,
|
|
EventMessage aMessage,
|
|
EventClassID aEventClassID)
|
|
: WidgetEventTime()
|
|
, mClass(aEventClassID)
|
|
, mMessage(aMessage)
|
|
, mRefPoint(0, 0)
|
|
, mLastRefPoint(0, 0)
|
|
, mSpecifiedEventType(nullptr)
|
|
{
|
|
MOZ_COUNT_CTOR(WidgetEvent);
|
|
mFlags.Clear();
|
|
mFlags.mIsTrusted = aIsTrusted;
|
|
SetDefaultCancelableAndBubbles();
|
|
SetDefaultComposed();
|
|
SetDefaultComposedInNativeAnonymousContent();
|
|
}
|
|
|
|
WidgetEvent()
|
|
: WidgetEventTime()
|
|
{
|
|
MOZ_COUNT_CTOR(WidgetEvent);
|
|
}
|
|
|
|
public:
|
|
WidgetEvent(bool aIsTrusted, EventMessage aMessage)
|
|
: WidgetEvent(aIsTrusted, aMessage, eBasicEventClass)
|
|
{
|
|
}
|
|
|
|
virtual ~WidgetEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(WidgetEvent);
|
|
}
|
|
|
|
WidgetEvent(const WidgetEvent& aOther)
|
|
{
|
|
MOZ_COUNT_CTOR(WidgetEvent);
|
|
*this = aOther;
|
|
}
|
|
|
|
virtual WidgetEvent* Duplicate() const
|
|
{
|
|
MOZ_ASSERT(mClass == eBasicEventClass,
|
|
"Duplicate() must be overridden by sub class");
|
|
WidgetEvent* result = new WidgetEvent(false, mMessage);
|
|
result->AssignEventData(*this, true);
|
|
result->mFlags = mFlags;
|
|
return result;
|
|
}
|
|
|
|
EventClassID mClass;
|
|
EventMessage mMessage;
|
|
// Relative to the widget of the event, or if there is no widget then it is
|
|
// in screen coordinates. Not modified by layout code.
|
|
LayoutDeviceIntPoint mRefPoint;
|
|
// The previous mRefPoint, if known, used to calculate mouse movement deltas.
|
|
LayoutDeviceIntPoint mLastRefPoint;
|
|
// See BaseEventFlags definition for the detail.
|
|
BaseEventFlags mFlags;
|
|
|
|
// If JS creates an event with unknown event type or known event type but
|
|
// for different event interface, the event type is stored to this.
|
|
// NOTE: This is always used if the instance is a WidgetCommandEvent instance.
|
|
nsCOMPtr<nsIAtom> mSpecifiedEventType;
|
|
|
|
// nsIAtom isn't available on non-main thread due to unsafe. Therefore,
|
|
// mSpecifiedEventTypeString is used instead of mSpecifiedEventType if
|
|
// the event is created in non-main thread.
|
|
nsString mSpecifiedEventTypeString;
|
|
|
|
// Event targets, needed by DOM Events
|
|
// Note that when you need event target for DOM event, you should use
|
|
// Get*DOMEventTarget() instead of accessing these members directly.
|
|
nsCOMPtr<dom::EventTarget> mTarget;
|
|
nsCOMPtr<dom::EventTarget> mCurrentTarget;
|
|
nsCOMPtr<dom::EventTarget> mOriginalTarget;
|
|
|
|
dom::EventTarget* GetDOMEventTarget() const;
|
|
dom::EventTarget* GetCurrentDOMEventTarget() const;
|
|
dom::EventTarget* GetOriginalDOMEventTarget() const;
|
|
|
|
void AssignEventData(const WidgetEvent& aEvent, bool aCopyTargets)
|
|
{
|
|
// mClass should be initialized with the constructor.
|
|
// mMessage should be initialized with the constructor.
|
|
mRefPoint = aEvent.mRefPoint;
|
|
// mLastRefPoint doesn't need to be copied.
|
|
AssignEventTime(aEvent);
|
|
// mFlags should be copied manually if it's necessary.
|
|
mSpecifiedEventType = aEvent.mSpecifiedEventType;
|
|
// mSpecifiedEventTypeString should be copied manually if it's necessary.
|
|
mTarget = aCopyTargets ? aEvent.mTarget : nullptr;
|
|
mCurrentTarget = aCopyTargets ? aEvent.mCurrentTarget : nullptr;
|
|
mOriginalTarget = aCopyTargets ? aEvent.mOriginalTarget : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Helper methods for methods of DOM Event.
|
|
*/
|
|
void StopPropagation() { mFlags.StopPropagation(); }
|
|
void StopImmediatePropagation() { mFlags.StopImmediatePropagation(); }
|
|
void StopCrossProcessForwarding() { mFlags.StopCrossProcessForwarding(); }
|
|
void PreventDefault(bool aCalledByDefaultHandler = true)
|
|
{
|
|
// Legacy mouse events shouldn't be prevented on ePointerDown by default
|
|
// handlers.
|
|
MOZ_RELEASE_ASSERT(!aCalledByDefaultHandler || mMessage != ePointerDown);
|
|
mFlags.PreventDefault(aCalledByDefaultHandler);
|
|
}
|
|
void PreventDefaultBeforeDispatch() { mFlags.PreventDefaultBeforeDispatch(); }
|
|
bool DefaultPrevented() const { return mFlags.DefaultPrevented(); }
|
|
bool DefaultPreventedByContent() const
|
|
{
|
|
return mFlags.DefaultPreventedByContent();
|
|
}
|
|
bool IsTrusted() const { return mFlags.IsTrusted(); }
|
|
bool PropagationStopped() const { return mFlags.PropagationStopped(); }
|
|
|
|
/**
|
|
* Utils for checking event types
|
|
*/
|
|
|
|
/**
|
|
* As*Event() returns the pointer of the instance only when the instance is
|
|
* the class or one of its derived class.
|
|
*/
|
|
#define NS_ROOT_EVENT_CLASS(aPrefix, aName)
|
|
#define NS_EVENT_CLASS(aPrefix, aName) \
|
|
virtual aPrefix##aName* As##aName(); \
|
|
const aPrefix##aName* As##aName() const;
|
|
|
|
#include "mozilla/EventClassList.h"
|
|
|
|
#undef NS_EVENT_CLASS
|
|
#undef NS_ROOT_EVENT_CLASS
|
|
|
|
/**
|
|
* Returns true if the event is a query content event.
|
|
*/
|
|
bool IsQueryContentEvent() const;
|
|
/**
|
|
* Returns true if the event is a selection event.
|
|
*/
|
|
bool IsSelectionEvent() const;
|
|
/**
|
|
* Returns true if the event is a content command event.
|
|
*/
|
|
bool IsContentCommandEvent() const;
|
|
/**
|
|
* Returns true if the event is a native event deliverer event for plugin.
|
|
*/
|
|
bool IsNativeEventDelivererForPlugin() const;
|
|
|
|
/**
|
|
* Returns true if the event mMessage is one of mouse events.
|
|
*/
|
|
bool HasMouseEventMessage() const;
|
|
/**
|
|
* Returns true if the event mMessage is one of drag events.
|
|
*/
|
|
bool HasDragEventMessage() const;
|
|
/**
|
|
* Returns true if the event mMessage is one of key events.
|
|
*/
|
|
bool HasKeyEventMessage() const;
|
|
/**
|
|
* Returns true if the event mMessage is one of composition events or text
|
|
* event.
|
|
*/
|
|
bool HasIMEEventMessage() const;
|
|
/**
|
|
* Returns true if the event mMessage is one of plugin activation events.
|
|
*/
|
|
bool HasPluginActivationEventMessage() const;
|
|
|
|
/**
|
|
* Returns true if the event can be sent to remote process.
|
|
*/
|
|
bool CanBeSentToRemoteProcess() const;
|
|
/**
|
|
* Returns true if the event is native event deliverer event for plugin and
|
|
* it should be retarted to focused document.
|
|
*/
|
|
bool IsRetargetedNativeEventDelivererForPlugin() const;
|
|
/**
|
|
* Returns true if the event is native event deliverer event for plugin and
|
|
* it should NOT be retarted to focused document.
|
|
*/
|
|
bool IsNonRetargetedNativeEventDelivererForPlugin() const;
|
|
/**
|
|
* Returns true if the event is related to IME handling. It includes
|
|
* IME events, query content events and selection events.
|
|
* Be careful when you use this.
|
|
*/
|
|
bool IsIMERelatedEvent() const;
|
|
|
|
/**
|
|
* Whether the event should be handled by the frame of the mouse cursor
|
|
* position or not. When it should be handled there (e.g., the mouse events),
|
|
* this returns true.
|
|
*/
|
|
bool IsUsingCoordinates() const;
|
|
/**
|
|
* Whether the event should be handled by the focused DOM window in the
|
|
* same top level window's or not. E.g., key events, IME related events
|
|
* (including the query content events, they are used in IME transaction)
|
|
* should be handled by the (last) focused window rather than the dispatched
|
|
* window.
|
|
*
|
|
* NOTE: Even if this returns true, the event isn't going to be handled by the
|
|
* application level active DOM window which is on another top level window.
|
|
* So, when the event is fired on a deactive window, the event is going to be
|
|
* handled by the last focused DOM window in the last focused window.
|
|
*/
|
|
bool IsTargetedAtFocusedWindow() const;
|
|
/**
|
|
* Whether the event should be handled by the focused content or not. E.g.,
|
|
* key events, IME related events and other input events which are not handled
|
|
* by the frame of the mouse cursor position.
|
|
*
|
|
* NOTE: Even if this returns true, the event isn't going to be handled by the
|
|
* application level active DOM window which is on another top level window.
|
|
* So, when the event is fired on a deactive window, the event is going to be
|
|
* handled by the last focused DOM element of the last focused DOM window in
|
|
* the last focused window.
|
|
*/
|
|
bool IsTargetedAtFocusedContent() const;
|
|
/**
|
|
* Whether the event should cause a DOM event.
|
|
*/
|
|
bool IsAllowedToDispatchDOMEvent() const;
|
|
/**
|
|
* Whether the event should be dispatched in system group.
|
|
*/
|
|
bool IsAllowedToDispatchInSystemGroup() const;
|
|
/**
|
|
* Initialize mComposed
|
|
*/
|
|
void SetDefaultComposed()
|
|
{
|
|
switch (mClass) {
|
|
case eCompositionEventClass:
|
|
mFlags.mComposed = mMessage == eCompositionStart ||
|
|
mMessage == eCompositionUpdate ||
|
|
mMessage == eCompositionEnd;
|
|
break;
|
|
case eDragEventClass:
|
|
// All drag & drop events are composed
|
|
mFlags.mComposed = mMessage == eDrag || mMessage == eDragEnd ||
|
|
mMessage == eDragEnter || mMessage == eDragExit ||
|
|
mMessage == eDragLeave || mMessage == eDragOver ||
|
|
mMessage == eDragStart || mMessage == eDrop;
|
|
break;
|
|
case eEditorInputEventClass:
|
|
mFlags.mComposed = mMessage == eEditorInput;
|
|
break;
|
|
case eFocusEventClass:
|
|
mFlags.mComposed = mMessage == eBlur || mMessage == eFocus;
|
|
break;
|
|
case eKeyboardEventClass:
|
|
mFlags.mComposed = mMessage == eKeyDown || mMessage == eKeyUp ||
|
|
mMessage == eKeyPress;
|
|
break;
|
|
case eMouseEventClass:
|
|
mFlags.mComposed = mMessage == eMouseClick ||
|
|
mMessage == eMouseDoubleClick ||
|
|
mMessage == eMouseAuxClick ||
|
|
mMessage == eMouseDown || mMessage == eMouseUp ||
|
|
mMessage == eMouseEnter || mMessage == eMouseLeave ||
|
|
mMessage == eMouseOver || mMessage == eMouseOut ||
|
|
mMessage == eMouseMove || mMessage == eContextMenu;
|
|
break;
|
|
case ePointerEventClass:
|
|
// All pointer events are composed
|
|
mFlags.mComposed = mMessage == ePointerDown ||
|
|
mMessage == ePointerMove || mMessage == ePointerUp ||
|
|
mMessage == ePointerCancel ||
|
|
mMessage == ePointerOver ||
|
|
mMessage == ePointerOut ||
|
|
mMessage == ePointerEnter ||
|
|
mMessage == ePointerLeave ||
|
|
mMessage == ePointerGotCapture ||
|
|
mMessage == ePointerLostCapture;
|
|
break;
|
|
case eTouchEventClass:
|
|
// All touch events are composed
|
|
mFlags.mComposed = mMessage == eTouchStart || mMessage == eTouchEnd ||
|
|
mMessage == eTouchMove || mMessage == eTouchCancel;
|
|
break;
|
|
case eUIEventClass:
|
|
mFlags.mComposed = mMessage == eLegacyDOMFocusIn ||
|
|
mMessage == eLegacyDOMFocusOut ||
|
|
mMessage == eLegacyDOMActivate;
|
|
break;
|
|
case eWheelEventClass:
|
|
// All wheel events are composed
|
|
mFlags.mComposed = mMessage == eWheel;
|
|
break;
|
|
default:
|
|
mFlags.mComposed = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void SetComposed(const nsAString& aEventTypeArg)
|
|
{
|
|
mFlags.mComposed = // composition events
|
|
aEventTypeArg.EqualsLiteral("compositionstart") ||
|
|
aEventTypeArg.EqualsLiteral("compositionupdate") ||
|
|
aEventTypeArg.EqualsLiteral("compositionend") ||
|
|
// drag and drop events
|
|
aEventTypeArg.EqualsLiteral("dragstart") ||
|
|
aEventTypeArg.EqualsLiteral("drag") ||
|
|
aEventTypeArg.EqualsLiteral("dragenter") ||
|
|
aEventTypeArg.EqualsLiteral("dragexit") ||
|
|
aEventTypeArg.EqualsLiteral("dragleave") ||
|
|
aEventTypeArg.EqualsLiteral("dragover") ||
|
|
aEventTypeArg.EqualsLiteral("drop") ||
|
|
aEventTypeArg.EqualsLiteral("dropend") ||
|
|
// editor input events
|
|
aEventTypeArg.EqualsLiteral("input") ||
|
|
aEventTypeArg.EqualsLiteral("beforeinput") ||
|
|
// focus events
|
|
aEventTypeArg.EqualsLiteral("blur") ||
|
|
aEventTypeArg.EqualsLiteral("focus") ||
|
|
aEventTypeArg.EqualsLiteral("focusin") ||
|
|
aEventTypeArg.EqualsLiteral("focusout") ||
|
|
// keyboard events
|
|
aEventTypeArg.EqualsLiteral("keydown") ||
|
|
aEventTypeArg.EqualsLiteral("keyup") ||
|
|
aEventTypeArg.EqualsLiteral("keypress") ||
|
|
// mouse events
|
|
aEventTypeArg.EqualsLiteral("click") ||
|
|
aEventTypeArg.EqualsLiteral("dblclick") ||
|
|
aEventTypeArg.EqualsLiteral("mousedown") ||
|
|
aEventTypeArg.EqualsLiteral("mouseup") ||
|
|
aEventTypeArg.EqualsLiteral("mouseenter") ||
|
|
aEventTypeArg.EqualsLiteral("mouseleave") ||
|
|
aEventTypeArg.EqualsLiteral("mouseover") ||
|
|
aEventTypeArg.EqualsLiteral("mouseout") ||
|
|
aEventTypeArg.EqualsLiteral("mousemove") ||
|
|
aEventTypeArg.EqualsLiteral("contextmenu") ||
|
|
// pointer events
|
|
aEventTypeArg.EqualsLiteral("pointerdown") ||
|
|
aEventTypeArg.EqualsLiteral("pointermove") ||
|
|
aEventTypeArg.EqualsLiteral("pointerup") ||
|
|
aEventTypeArg.EqualsLiteral("pointercancel") ||
|
|
aEventTypeArg.EqualsLiteral("pointerover") ||
|
|
aEventTypeArg.EqualsLiteral("pointerout") ||
|
|
aEventTypeArg.EqualsLiteral("pointerenter") ||
|
|
aEventTypeArg.EqualsLiteral("pointerleave") ||
|
|
aEventTypeArg.EqualsLiteral("gotpointercapture") ||
|
|
aEventTypeArg.EqualsLiteral("lostpointercapture") ||
|
|
// touch events
|
|
aEventTypeArg.EqualsLiteral("touchstart") ||
|
|
aEventTypeArg.EqualsLiteral("touchend") ||
|
|
aEventTypeArg.EqualsLiteral("touchmove") ||
|
|
aEventTypeArg.EqualsLiteral("touchcancel") ||
|
|
// UI legacy events
|
|
aEventTypeArg.EqualsLiteral("DOMFocusIn") ||
|
|
aEventTypeArg.EqualsLiteral("DOMFocusOut") ||
|
|
aEventTypeArg.EqualsLiteral("DOMActivate") ||
|
|
// wheel events
|
|
aEventTypeArg.EqualsLiteral("wheel");
|
|
}
|
|
|
|
void SetComposed(bool aComposed)
|
|
{
|
|
mFlags.mComposed = aComposed;
|
|
}
|
|
|
|
void SetDefaultComposedInNativeAnonymousContent()
|
|
{
|
|
// For compatibility concerns, we set mComposedInNativeAnonymousContent to
|
|
// false for those events we want to stop propagation.
|
|
//
|
|
// nsVideoFrame may create anonymous image element which fires eLoad,
|
|
// eLoadStart, eLoadEnd, eLoadError. We don't want these events cross
|
|
// the boundary of NAC
|
|
mFlags.mComposedInNativeAnonymousContent = mMessage != eLoad &&
|
|
mMessage != eLoadStart &&
|
|
mMessage != eLoadEnd &&
|
|
mMessage != eLoadError;
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::NativeEventData
|
|
*
|
|
* WidgetGUIEvent's mPluginEvent member used to be a void* pointer,
|
|
* used to reference external, OS-specific data structures.
|
|
*
|
|
* That void* pointer wasn't serializable by itself, causing
|
|
* certain plugin events not to function in e10s. See bug 586656.
|
|
*
|
|
* To make this serializable, we changed this void* pointer into
|
|
* a proper buffer, and copy these external data structures into this
|
|
* buffer.
|
|
*
|
|
* That buffer is NativeEventData::mBuffer below.
|
|
*
|
|
* We wrap this in that NativeEventData class providing operators to
|
|
* be compatible with existing code that was written around
|
|
* the old void* field.
|
|
******************************************************************************/
|
|
|
|
class NativeEventData final
|
|
{
|
|
nsTArray<uint8_t> mBuffer;
|
|
|
|
friend struct IPC::ParamTraits<mozilla::NativeEventData>;
|
|
|
|
public:
|
|
|
|
explicit operator bool() const
|
|
{
|
|
return !mBuffer.IsEmpty();
|
|
}
|
|
|
|
template<typename T>
|
|
explicit operator const T*() const
|
|
{
|
|
return mBuffer.IsEmpty()
|
|
? nullptr
|
|
: reinterpret_cast<const T*>(mBuffer.Elements());
|
|
}
|
|
|
|
template <typename T>
|
|
void Copy(const T& other)
|
|
{
|
|
static_assert(!mozilla::IsPointer<T>::value, "Don't want a pointer!");
|
|
mBuffer.SetLength(sizeof(T));
|
|
memcpy(mBuffer.Elements(), &other, mBuffer.Length());
|
|
}
|
|
|
|
void Clear()
|
|
{
|
|
mBuffer.Clear();
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetGUIEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetGUIEvent : public WidgetEvent
|
|
{
|
|
protected:
|
|
WidgetGUIEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget,
|
|
EventClassID aEventClassID)
|
|
: WidgetEvent(aIsTrusted, aMessage, aEventClassID)
|
|
, mWidget(aWidget)
|
|
{
|
|
}
|
|
|
|
WidgetGUIEvent()
|
|
{
|
|
}
|
|
|
|
public:
|
|
virtual WidgetGUIEvent* AsGUIEvent() override { return this; }
|
|
|
|
WidgetGUIEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget)
|
|
: WidgetEvent(aIsTrusted, aMessage, eGUIEventClass)
|
|
, mWidget(aWidget)
|
|
{
|
|
}
|
|
|
|
virtual WidgetEvent* Duplicate() const override
|
|
{
|
|
MOZ_ASSERT(mClass == eGUIEventClass,
|
|
"Duplicate() must be overridden by sub class");
|
|
// Not copying widget, it is a weak reference.
|
|
WidgetGUIEvent* result = new WidgetGUIEvent(false, mMessage, nullptr);
|
|
result->AssignGUIEventData(*this, true);
|
|
result->mFlags = mFlags;
|
|
return result;
|
|
}
|
|
|
|
// Originator of the event
|
|
nsCOMPtr<nsIWidget> mWidget;
|
|
|
|
/*
|
|
* Ideally though, we wouldn't allow arbitrary reinterpret_cast'ing here;
|
|
* instead, we would at least store type information here so that
|
|
* this class can't be used to reinterpret one structure type into another.
|
|
* We can also wonder if it would be possible to properly extend
|
|
* WidgetGUIEvent and other Event classes to remove the need for this
|
|
* mPluginEvent field.
|
|
*/
|
|
typedef NativeEventData PluginEvent;
|
|
|
|
// Event for NPAPI plugin
|
|
PluginEvent mPluginEvent;
|
|
|
|
void AssignGUIEventData(const WidgetGUIEvent& aEvent, bool aCopyTargets)
|
|
{
|
|
AssignEventData(aEvent, aCopyTargets);
|
|
|
|
// widget should be initialized with the constructor.
|
|
|
|
mPluginEvent = aEvent.mPluginEvent;
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::Modifier
|
|
*
|
|
* All modifier keys should be defined here. This is used for managing
|
|
* modifier states for DOM Level 3 or later.
|
|
******************************************************************************/
|
|
|
|
enum Modifier
|
|
{
|
|
MODIFIER_NONE = 0x0000,
|
|
MODIFIER_ALT = 0x0001,
|
|
MODIFIER_ALTGRAPH = 0x0002,
|
|
MODIFIER_CAPSLOCK = 0x0004,
|
|
MODIFIER_CONTROL = 0x0008,
|
|
MODIFIER_FN = 0x0010,
|
|
MODIFIER_FNLOCK = 0x0020,
|
|
MODIFIER_META = 0x0040,
|
|
MODIFIER_NUMLOCK = 0x0080,
|
|
MODIFIER_SCROLLLOCK = 0x0100,
|
|
MODIFIER_SHIFT = 0x0200,
|
|
MODIFIER_SYMBOL = 0x0400,
|
|
MODIFIER_SYMBOLLOCK = 0x0800,
|
|
MODIFIER_OS = 0x1000
|
|
};
|
|
|
|
/******************************************************************************
|
|
* Modifier key names.
|
|
******************************************************************************/
|
|
|
|
#define NS_DOM_KEYNAME_ALT "Alt"
|
|
#define NS_DOM_KEYNAME_ALTGRAPH "AltGraph"
|
|
#define NS_DOM_KEYNAME_CAPSLOCK "CapsLock"
|
|
#define NS_DOM_KEYNAME_CONTROL "Control"
|
|
#define NS_DOM_KEYNAME_FN "Fn"
|
|
#define NS_DOM_KEYNAME_FNLOCK "FnLock"
|
|
#define NS_DOM_KEYNAME_META "Meta"
|
|
#define NS_DOM_KEYNAME_NUMLOCK "NumLock"
|
|
#define NS_DOM_KEYNAME_SCROLLLOCK "ScrollLock"
|
|
#define NS_DOM_KEYNAME_SHIFT "Shift"
|
|
#define NS_DOM_KEYNAME_SYMBOL "Symbol"
|
|
#define NS_DOM_KEYNAME_SYMBOLLOCK "SymbolLock"
|
|
#define NS_DOM_KEYNAME_OS "OS"
|
|
|
|
/******************************************************************************
|
|
* mozilla::Modifiers
|
|
******************************************************************************/
|
|
|
|
typedef uint16_t Modifiers;
|
|
|
|
class MOZ_STACK_CLASS GetModifiersName final : public nsAutoCString
|
|
{
|
|
public:
|
|
explicit GetModifiersName(Modifiers aModifiers)
|
|
{
|
|
if (aModifiers & MODIFIER_ALT) {
|
|
AssignLiteral(NS_DOM_KEYNAME_ALT);
|
|
}
|
|
if (aModifiers & MODIFIER_ALTGRAPH) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_ALTGRAPH);
|
|
}
|
|
if (aModifiers & MODIFIER_CAPSLOCK) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_CAPSLOCK);
|
|
}
|
|
if (aModifiers & MODIFIER_CONTROL) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_CONTROL);
|
|
}
|
|
if (aModifiers & MODIFIER_FN) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_FN);
|
|
}
|
|
if (aModifiers & MODIFIER_FNLOCK) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_FNLOCK);
|
|
}
|
|
if (aModifiers & MODIFIER_META) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_META);
|
|
}
|
|
if (aModifiers & MODIFIER_NUMLOCK) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_NUMLOCK);
|
|
}
|
|
if (aModifiers & MODIFIER_SCROLLLOCK) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_SCROLLLOCK);
|
|
}
|
|
if (aModifiers & MODIFIER_SHIFT) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_SHIFT);
|
|
}
|
|
if (aModifiers & MODIFIER_SYMBOL) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_SYMBOL);
|
|
}
|
|
if (aModifiers & MODIFIER_SYMBOLLOCK) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_SYMBOLLOCK);
|
|
}
|
|
if (aModifiers & MODIFIER_OS) {
|
|
MaybeAppendSeparator();
|
|
AppendLiteral(NS_DOM_KEYNAME_OS);
|
|
}
|
|
if (IsEmpty()) {
|
|
AssignLiteral("none");
|
|
}
|
|
}
|
|
|
|
private:
|
|
void MaybeAppendSeparator()
|
|
{
|
|
if (!IsEmpty()) {
|
|
AppendLiteral(" | ");
|
|
}
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetInputEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetInputEvent : public WidgetGUIEvent
|
|
{
|
|
protected:
|
|
WidgetInputEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget,
|
|
EventClassID aEventClassID)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, aEventClassID)
|
|
, mModifiers(0)
|
|
{
|
|
}
|
|
|
|
WidgetInputEvent()
|
|
: mModifiers(0)
|
|
{
|
|
}
|
|
|
|
public:
|
|
virtual WidgetInputEvent* AsInputEvent() override { return this; }
|
|
|
|
WidgetInputEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, eInputEventClass)
|
|
, mModifiers(0)
|
|
{
|
|
}
|
|
|
|
virtual WidgetEvent* Duplicate() const override
|
|
{
|
|
MOZ_ASSERT(mClass == eInputEventClass,
|
|
"Duplicate() must be overridden by sub class");
|
|
// Not copying widget, it is a weak reference.
|
|
WidgetInputEvent* result = new WidgetInputEvent(false, mMessage, nullptr);
|
|
result->AssignInputEventData(*this, true);
|
|
result->mFlags = mFlags;
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns a modifier of "Accel" virtual modifier which is used for shortcut
|
|
* key.
|
|
*/
|
|
static Modifier AccelModifier();
|
|
|
|
/**
|
|
* GetModifier() returns a modifier flag which is activated by aDOMKeyName.
|
|
*/
|
|
static Modifier GetModifier(const nsAString& aDOMKeyName);
|
|
|
|
// true indicates the accel key on the environment is down
|
|
bool IsAccel() const
|
|
{
|
|
return ((mModifiers & AccelModifier()) != 0);
|
|
}
|
|
|
|
// true indicates the shift key is down
|
|
bool IsShift() const
|
|
{
|
|
return ((mModifiers & MODIFIER_SHIFT) != 0);
|
|
}
|
|
// true indicates the control key is down
|
|
bool IsControl() const
|
|
{
|
|
return ((mModifiers & MODIFIER_CONTROL) != 0);
|
|
}
|
|
// true indicates the alt key is down
|
|
bool IsAlt() const
|
|
{
|
|
return ((mModifiers & MODIFIER_ALT) != 0);
|
|
}
|
|
// true indicates the meta key is down (or, on Mac, the Command key)
|
|
bool IsMeta() const
|
|
{
|
|
return ((mModifiers & MODIFIER_META) != 0);
|
|
}
|
|
// true indicates the win key is down on Windows. Or the Super or Hyper key
|
|
// is down on Linux.
|
|
bool IsOS() const
|
|
{
|
|
return ((mModifiers & MODIFIER_OS) != 0);
|
|
}
|
|
// true indicates the alt graph key is down
|
|
// NOTE: on Mac, the option key press causes both IsAlt() and IsAltGrpah()
|
|
// return true.
|
|
bool IsAltGraph() const
|
|
{
|
|
return ((mModifiers & MODIFIER_ALTGRAPH) != 0);
|
|
}
|
|
// true indicates the CapLock LED is turn on.
|
|
bool IsCapsLocked() const
|
|
{
|
|
return ((mModifiers & MODIFIER_CAPSLOCK) != 0);
|
|
}
|
|
// true indicates the NumLock LED is turn on.
|
|
bool IsNumLocked() const
|
|
{
|
|
return ((mModifiers & MODIFIER_NUMLOCK) != 0);
|
|
}
|
|
// true indicates the ScrollLock LED is turn on.
|
|
bool IsScrollLocked() const
|
|
{
|
|
return ((mModifiers & MODIFIER_SCROLLLOCK) != 0);
|
|
}
|
|
|
|
// true indicates the Fn key is down, but this is not supported by native
|
|
// key event on any platform.
|
|
bool IsFn() const
|
|
{
|
|
return ((mModifiers & MODIFIER_FN) != 0);
|
|
}
|
|
// true indicates the FnLock LED is turn on, but we don't know such
|
|
// keyboards nor platforms.
|
|
bool IsFnLocked() const
|
|
{
|
|
return ((mModifiers & MODIFIER_FNLOCK) != 0);
|
|
}
|
|
// true indicates the Symbol is down, but this is not supported by native
|
|
// key event on any platforms.
|
|
bool IsSymbol() const
|
|
{
|
|
return ((mModifiers & MODIFIER_SYMBOL) != 0);
|
|
}
|
|
// true indicates the SymbolLock LED is turn on, but we don't know such
|
|
// keyboards nor platforms.
|
|
bool IsSymbolLocked() const
|
|
{
|
|
return ((mModifiers & MODIFIER_SYMBOLLOCK) != 0);
|
|
}
|
|
|
|
void InitBasicModifiers(bool aCtrlKey,
|
|
bool aAltKey,
|
|
bool aShiftKey,
|
|
bool aMetaKey)
|
|
{
|
|
mModifiers = 0;
|
|
if (aCtrlKey) {
|
|
mModifiers |= MODIFIER_CONTROL;
|
|
}
|
|
if (aAltKey) {
|
|
mModifiers |= MODIFIER_ALT;
|
|
}
|
|
if (aShiftKey) {
|
|
mModifiers |= MODIFIER_SHIFT;
|
|
}
|
|
if (aMetaKey) {
|
|
mModifiers |= MODIFIER_META;
|
|
}
|
|
}
|
|
|
|
Modifiers mModifiers;
|
|
|
|
void AssignInputEventData(const WidgetInputEvent& aEvent, bool aCopyTargets)
|
|
{
|
|
AssignGUIEventData(aEvent, aCopyTargets);
|
|
|
|
mModifiers = aEvent.mModifiers;
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::InternalUIEvent
|
|
*
|
|
* XXX Why this inherits WidgetGUIEvent rather than WidgetEvent?
|
|
******************************************************************************/
|
|
|
|
class InternalUIEvent : public WidgetGUIEvent
|
|
{
|
|
protected:
|
|
InternalUIEvent()
|
|
: mDetail(0)
|
|
, mCausedByUntrustedEvent(false)
|
|
{
|
|
}
|
|
|
|
InternalUIEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget,
|
|
EventClassID aEventClassID)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, aEventClassID)
|
|
, mDetail(0)
|
|
, mCausedByUntrustedEvent(false)
|
|
{
|
|
}
|
|
|
|
InternalUIEvent(bool aIsTrusted, EventMessage aMessage,
|
|
EventClassID aEventClassID)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, nullptr, aEventClassID)
|
|
, mDetail(0)
|
|
, mCausedByUntrustedEvent(false)
|
|
{
|
|
}
|
|
|
|
public:
|
|
virtual InternalUIEvent* AsUIEvent() override { return this; }
|
|
|
|
/**
|
|
* If the UIEvent is caused by another event (e.g., click event),
|
|
* aEventCausesThisEvent should be the event. If there is no such event,
|
|
* this should be nullptr.
|
|
*/
|
|
InternalUIEvent(bool aIsTrusted, EventMessage aMessage,
|
|
const WidgetEvent* aEventCausesThisEvent)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, nullptr, eUIEventClass)
|
|
, mDetail(0)
|
|
, mCausedByUntrustedEvent(
|
|
aEventCausesThisEvent && !aEventCausesThisEvent->IsTrusted())
|
|
{
|
|
}
|
|
|
|
virtual WidgetEvent* Duplicate() const override
|
|
{
|
|
MOZ_ASSERT(mClass == eUIEventClass,
|
|
"Duplicate() must be overridden by sub class");
|
|
InternalUIEvent* result = new InternalUIEvent(false, mMessage, nullptr);
|
|
result->AssignUIEventData(*this, true);
|
|
result->mFlags = mFlags;
|
|
return result;
|
|
}
|
|
|
|
int32_t mDetail;
|
|
// mCausedByUntrustedEvent is true if the event is caused by untrusted event.
|
|
bool mCausedByUntrustedEvent;
|
|
|
|
// If you check the event is a trusted event and NOT caused by an untrusted
|
|
// event, IsTrustable() returns what you expected.
|
|
bool IsTrustable() const
|
|
{
|
|
return IsTrusted() && !mCausedByUntrustedEvent;
|
|
}
|
|
|
|
void AssignUIEventData(const InternalUIEvent& aEvent, bool aCopyTargets)
|
|
{
|
|
AssignGUIEventData(aEvent, aCopyTargets);
|
|
|
|
mDetail = aEvent.mDetail;
|
|
mCausedByUntrustedEvent = aEvent.mCausedByUntrustedEvent;
|
|
}
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_BasicEvents_h__
|