mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
806 lines
25 KiB
C++
806 lines
25 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 mExceptionHasBeenRisen is true, one of the event handlers has risen an
|
|
// exception.
|
|
bool mExceptionHasBeenRisen : 1;
|
|
// If mRetargetToNonNativeAnonymous is true and the target is in a non-native
|
|
// native anonymous subtree, the event target is set to originalTarget.
|
|
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.
|
|
bool mNoContentDispatch : 1;
|
|
// If mOnlyChromeDispatch is true, the event is dispatched to only chrome.
|
|
bool mOnlyChromeDispatch : 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 the event is being handled in target phase, returns true.
|
|
inline bool InTargetPhase() const
|
|
{
|
|
return (mInBubblingPhase && mInCapturePhase);
|
|
}
|
|
|
|
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::WidgetEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetEvent
|
|
{
|
|
protected:
|
|
WidgetEvent(bool aIsTrusted,
|
|
EventMessage aMessage,
|
|
EventClassID aEventClassID)
|
|
: mClass(aEventClassID)
|
|
, mMessage(aMessage)
|
|
, refPoint(0, 0)
|
|
, lastRefPoint(0, 0)
|
|
, time(0)
|
|
, timeStamp(TimeStamp::Now())
|
|
, userType(nullptr)
|
|
{
|
|
MOZ_COUNT_CTOR(WidgetEvent);
|
|
mFlags.Clear();
|
|
mFlags.mIsTrusted = aIsTrusted;
|
|
mFlags.mCancelable = true;
|
|
mFlags.mBubbles = true;
|
|
}
|
|
|
|
WidgetEvent()
|
|
{
|
|
MOZ_COUNT_CTOR(WidgetEvent);
|
|
}
|
|
|
|
public:
|
|
WidgetEvent(bool aIsTrusted, EventMessage aMessage)
|
|
: mClass(eBasicEventClass)
|
|
, mMessage(aMessage)
|
|
, refPoint(0, 0)
|
|
, lastRefPoint(0, 0)
|
|
, time(0)
|
|
, timeStamp(TimeStamp::Now())
|
|
, userType(nullptr)
|
|
{
|
|
MOZ_COUNT_CTOR(WidgetEvent);
|
|
mFlags.Clear();
|
|
mFlags.mIsTrusted = aIsTrusted;
|
|
if (mMessage == eResize) {
|
|
mFlags.mCancelable = false;
|
|
} else {
|
|
mFlags.mCancelable = true;
|
|
}
|
|
mFlags.mBubbles = true;
|
|
}
|
|
|
|
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 refPoint;
|
|
// The previous refPoint, if known, used to calculate mouse movement deltas.
|
|
LayoutDeviceIntPoint lastRefPoint;
|
|
// Elapsed time, in milliseconds, from a platform-specific zero time
|
|
// to the time the message was created
|
|
uint64_t time;
|
|
// Timestamp when the message was created. Set in parallel to 'time' until we
|
|
// determine if it is safe to drop 'time' (see bug 77992).
|
|
mozilla::TimeStamp timeStamp;
|
|
// See BaseEventFlags definition for the detail.
|
|
BaseEventFlags mFlags;
|
|
|
|
// Additional type info for user defined events
|
|
nsCOMPtr<nsIAtom> userType;
|
|
|
|
nsString typeString; // always set on non-main-thread events
|
|
|
|
// Event targets, needed by DOM Events
|
|
nsCOMPtr<dom::EventTarget> target;
|
|
nsCOMPtr<dom::EventTarget> currentTarget;
|
|
nsCOMPtr<dom::EventTarget> originalTarget;
|
|
|
|
void AssignEventData(const WidgetEvent& aEvent, bool aCopyTargets)
|
|
{
|
|
// mClass should be initialized with the constructor.
|
|
// mMessage should be initialized with the constructor.
|
|
refPoint = aEvent.refPoint;
|
|
// lastRefPoint doesn't need to be copied.
|
|
time = aEvent.time;
|
|
timeStamp = aEvent.timeStamp;
|
|
// mFlags should be copied manually if it's necessary.
|
|
userType = aEvent.userType;
|
|
// typeString should be copied manually if it's necessary.
|
|
target = aCopyTargets ? aEvent.target : nullptr;
|
|
currentTarget = aCopyTargets ? aEvent.currentTarget : nullptr;
|
|
originalTarget = aCopyTargets ? aEvent.originalTarget : nullptr;
|
|
}
|
|
|
|
void PreventDefault()
|
|
{
|
|
mFlags.mDefaultPrevented = true;
|
|
mFlags.mDefaultPreventedByChrome = true;
|
|
}
|
|
|
|
/**
|
|
* 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 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;
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetGUIEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetGUIEvent : public WidgetEvent
|
|
{
|
|
protected:
|
|
WidgetGUIEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget,
|
|
EventClassID aEventClassID)
|
|
: WidgetEvent(aIsTrusted, aMessage, aEventClassID)
|
|
, widget(aWidget)
|
|
{
|
|
}
|
|
|
|
WidgetGUIEvent()
|
|
{
|
|
}
|
|
|
|
public:
|
|
virtual WidgetGUIEvent* AsGUIEvent() override { return this; }
|
|
|
|
WidgetGUIEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget)
|
|
: WidgetEvent(aIsTrusted, aMessage, eGUIEventClass)
|
|
, widget(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> widget;
|
|
|
|
/*
|
|
* Explanation for this PluginEvent class:
|
|
*
|
|
* 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 PluginEvent::mBuffer below.
|
|
*
|
|
* We wrap this in that PluginEvent class providing operators to
|
|
* be compatible with existing code that was written around
|
|
* the old void* field.
|
|
*
|
|
* 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.
|
|
*/
|
|
class PluginEvent final
|
|
{
|
|
nsTArray<uint8_t> mBuffer;
|
|
|
|
friend struct IPC::ParamTraits<mozilla::WidgetGUIEvent>;
|
|
|
|
public:
|
|
|
|
MOZ_EXPLICIT_CONVERSION operator bool() const
|
|
{
|
|
return !mBuffer.IsEmpty();
|
|
}
|
|
|
|
template<typename T>
|
|
MOZ_EXPLICIT_CONVERSION 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();
|
|
}
|
|
};
|
|
|
|
/// 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;
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetInputEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetInputEvent : public WidgetGUIEvent
|
|
{
|
|
protected:
|
|
WidgetInputEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget,
|
|
EventClassID aEventClassID)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, aEventClassID)
|
|
, modifiers(0)
|
|
{
|
|
}
|
|
|
|
WidgetInputEvent()
|
|
{
|
|
}
|
|
|
|
public:
|
|
virtual WidgetInputEvent* AsInputEvent() override { return this; }
|
|
|
|
WidgetInputEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, eInputEventClass)
|
|
, modifiers(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 ((modifiers & AccelModifier()) != 0);
|
|
}
|
|
|
|
// true indicates the shift key is down
|
|
bool IsShift() const
|
|
{
|
|
return ((modifiers & MODIFIER_SHIFT) != 0);
|
|
}
|
|
// true indicates the control key is down
|
|
bool IsControl() const
|
|
{
|
|
return ((modifiers & MODIFIER_CONTROL) != 0);
|
|
}
|
|
// true indicates the alt key is down
|
|
bool IsAlt() const
|
|
{
|
|
return ((modifiers & MODIFIER_ALT) != 0);
|
|
}
|
|
// true indicates the meta key is down (or, on Mac, the Command key)
|
|
bool IsMeta() const
|
|
{
|
|
return ((modifiers & 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 ((modifiers & 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 ((modifiers & MODIFIER_ALTGRAPH) != 0);
|
|
}
|
|
// true indicates the CapLock LED is turn on.
|
|
bool IsCapsLocked() const
|
|
{
|
|
return ((modifiers & MODIFIER_CAPSLOCK) != 0);
|
|
}
|
|
// true indicates the NumLock LED is turn on.
|
|
bool IsNumLocked() const
|
|
{
|
|
return ((modifiers & MODIFIER_NUMLOCK) != 0);
|
|
}
|
|
// true indicates the ScrollLock LED is turn on.
|
|
bool IsScrollLocked() const
|
|
{
|
|
return ((modifiers & 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 ((modifiers & MODIFIER_FN) != 0);
|
|
}
|
|
// true indicates the FnLock LED is turn on, but we don't know such
|
|
// keyboards nor platforms.
|
|
bool IsFnLocked() const
|
|
{
|
|
return ((modifiers & 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 ((modifiers & MODIFIER_SYMBOL) != 0);
|
|
}
|
|
// true indicates the SymbolLock LED is turn on, but we don't know such
|
|
// keyboards nor platforms.
|
|
bool IsSymbolLocked() const
|
|
{
|
|
return ((modifiers & MODIFIER_SYMBOLLOCK) != 0);
|
|
}
|
|
|
|
void InitBasicModifiers(bool aCtrlKey,
|
|
bool aAltKey,
|
|
bool aShiftKey,
|
|
bool aMetaKey)
|
|
{
|
|
modifiers = 0;
|
|
if (aCtrlKey) {
|
|
modifiers |= MODIFIER_CONTROL;
|
|
}
|
|
if (aAltKey) {
|
|
modifiers |= MODIFIER_ALT;
|
|
}
|
|
if (aShiftKey) {
|
|
modifiers |= MODIFIER_SHIFT;
|
|
}
|
|
if (aMetaKey) {
|
|
modifiers |= MODIFIER_META;
|
|
}
|
|
}
|
|
|
|
Modifiers modifiers;
|
|
|
|
void AssignInputEventData(const WidgetInputEvent& aEvent, bool aCopyTargets)
|
|
{
|
|
AssignGUIEventData(aEvent, aCopyTargets);
|
|
|
|
modifiers = aEvent.modifiers;
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::InternalUIEvent
|
|
*
|
|
* XXX Why this inherits WidgetGUIEvent rather than WidgetEvent?
|
|
******************************************************************************/
|
|
|
|
class InternalUIEvent : public WidgetGUIEvent
|
|
{
|
|
protected:
|
|
InternalUIEvent()
|
|
: detail(0)
|
|
, mCausedByUntrustedEvent(false)
|
|
{
|
|
}
|
|
|
|
InternalUIEvent(bool aIsTrusted, EventMessage aMessage, nsIWidget* aWidget,
|
|
EventClassID aEventClassID)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, aEventClassID)
|
|
, detail(0)
|
|
, mCausedByUntrustedEvent(false)
|
|
{
|
|
}
|
|
|
|
InternalUIEvent(bool aIsTrusted, EventMessage aMessage,
|
|
EventClassID aEventClassID)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, nullptr, aEventClassID)
|
|
, detail(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)
|
|
, detail(0)
|
|
, mCausedByUntrustedEvent(
|
|
aEventCausesThisEvent && !aEventCausesThisEvent->mFlags.mIsTrusted)
|
|
{
|
|
}
|
|
|
|
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 detail;
|
|
// 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 mFlags.mIsTrusted && !mCausedByUntrustedEvent;
|
|
}
|
|
|
|
void AssignUIEventData(const InternalUIEvent& aEvent, bool aCopyTargets)
|
|
{
|
|
AssignGUIEventData(aEvent, aCopyTargets);
|
|
|
|
detail = aEvent.detail;
|
|
mCausedByUntrustedEvent = aEvent.mCausedByUntrustedEvent;
|
|
}
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_BasicEvents_h__
|