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gecko-dev/widget/BasicEvents.h
Xidorn Quan 589c303536 Bug 910532 part 1 - Add flag to indicate prevent default from chrome. r=smaug 
--HG--
extra : source : 0c9290ce08d739394df1787a05beff8dfddb1b4e
2015-01-21 12:16:04 +11:00

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/* -*- 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"
/******************************************************************************
* Messages
*
* TODO: Make them enum.
******************************************************************************/
#define NS_EVENT_NULL 0
// This is a dummy event message for all event listener implementation in
// EventListenerManager.
#define NS_EVENT_ALL 1
#define NS_WINDOW_START 100
// Widget may be destroyed
#define NS_XUL_CLOSE (NS_WINDOW_START + 1)
// Key is pressed within a window
#define NS_KEY_PRESS (NS_WINDOW_START + 31)
// Key is released within a window
#define NS_KEY_UP (NS_WINDOW_START + 32)
// Key is pressed within a window
#define NS_KEY_DOWN (NS_WINDOW_START + 33)
#define NS_KEY_BEFORE_DOWN (NS_WINDOW_START + 34)
#define NS_KEY_AFTER_DOWN (NS_WINDOW_START + 35)
#define NS_KEY_BEFORE_UP (NS_WINDOW_START + 36)
#define NS_KEY_AFTER_UP (NS_WINDOW_START + 37)
#define NS_RESIZE_EVENT (NS_WINDOW_START + 60)
#define NS_SCROLL_EVENT (NS_WINDOW_START + 61)
// A plugin was clicked or otherwise focused. NS_PLUGIN_ACTIVATE should be
// used when the window is not active. NS_PLUGIN_FOCUS should be used when
// the window is active. In the latter case, the dispatcher of the event
// is expected to ensure that the plugin's widget is focused beforehand.
#define NS_PLUGIN_ACTIVATE (NS_WINDOW_START + 62)
#define NS_PLUGIN_FOCUS (NS_WINDOW_START + 63)
#define NS_OFFLINE (NS_WINDOW_START + 64)
#define NS_ONLINE (NS_WINDOW_START + 65)
// NS_BEFORERESIZE_EVENT used to be here (NS_WINDOW_START + 66)
// Indicates that the user is either idle or active
#define NS_MOZ_USER_IDLE (NS_WINDOW_START + 67)
#define NS_MOZ_USER_ACTIVE (NS_WINDOW_START + 68)
#define NS_LANGUAGECHANGE (NS_WINDOW_START + 70)
#define NS_MOUSE_MESSAGE_START 300
#define NS_MOUSE_MOVE (NS_MOUSE_MESSAGE_START)
#define NS_MOUSE_BUTTON_UP (NS_MOUSE_MESSAGE_START + 1)
#define NS_MOUSE_BUTTON_DOWN (NS_MOUSE_MESSAGE_START + 2)
#define NS_MOUSE_ENTER (NS_MOUSE_MESSAGE_START + 22)
#define NS_MOUSE_EXIT (NS_MOUSE_MESSAGE_START + 23)
#define NS_MOUSE_DOUBLECLICK (NS_MOUSE_MESSAGE_START + 24)
#define NS_MOUSE_CLICK (NS_MOUSE_MESSAGE_START + 27)
#define NS_MOUSE_ACTIVATE (NS_MOUSE_MESSAGE_START + 30)
#define NS_MOUSE_ENTER_SYNTH (NS_MOUSE_MESSAGE_START + 31)
#define NS_MOUSE_EXIT_SYNTH (NS_MOUSE_MESSAGE_START + 32)
#define NS_MOUSE_MOZHITTEST (NS_MOUSE_MESSAGE_START + 33)
#define NS_MOUSEENTER (NS_MOUSE_MESSAGE_START + 34)
#define NS_MOUSELEAVE (NS_MOUSE_MESSAGE_START + 35)
#define NS_MOUSE_MOZLONGTAP (NS_MOUSE_MESSAGE_START + 36)
// Pointer spec events
#define NS_POINTER_EVENT_START 4400
#define NS_POINTER_MOVE (NS_POINTER_EVENT_START)
#define NS_POINTER_UP (NS_POINTER_EVENT_START + 1)
#define NS_POINTER_DOWN (NS_POINTER_EVENT_START + 2)
#define NS_POINTER_OVER (NS_POINTER_EVENT_START + 22)
#define NS_POINTER_OUT (NS_POINTER_EVENT_START + 23)
#define NS_POINTER_ENTER (NS_POINTER_EVENT_START + 24)
#define NS_POINTER_LEAVE (NS_POINTER_EVENT_START + 25)
#define NS_POINTER_CANCEL (NS_POINTER_EVENT_START + 26)
#define NS_POINTER_GOT_CAPTURE (NS_POINTER_EVENT_START + 27)
#define NS_POINTER_LOST_CAPTURE (NS_POINTER_EVENT_START + 28)
#define NS_CONTEXTMENU_MESSAGE_START 500
#define NS_CONTEXTMENU (NS_CONTEXTMENU_MESSAGE_START)
#define NS_STREAM_EVENT_START 1100
#define NS_LOAD (NS_STREAM_EVENT_START)
#define NS_PAGE_UNLOAD (NS_STREAM_EVENT_START + 1)
#define NS_HASHCHANGE (NS_STREAM_EVENT_START + 2)
#define NS_IMAGE_ABORT (NS_STREAM_EVENT_START + 3)
#define NS_LOAD_ERROR (NS_STREAM_EVENT_START + 4)
#define NS_POPSTATE (NS_STREAM_EVENT_START + 5)
#define NS_BEFORE_PAGE_UNLOAD (NS_STREAM_EVENT_START + 6)
#define NS_PAGE_RESTORE (NS_STREAM_EVENT_START + 7)
#define NS_READYSTATECHANGE (NS_STREAM_EVENT_START + 8)
#define NS_FORM_EVENT_START 1200
#define NS_FORM_SUBMIT (NS_FORM_EVENT_START)
#define NS_FORM_RESET (NS_FORM_EVENT_START + 1)
#define NS_FORM_CHANGE (NS_FORM_EVENT_START + 2)
#define NS_FORM_SELECTED (NS_FORM_EVENT_START + 3)
#define NS_FORM_INVALID (NS_FORM_EVENT_START + 4)
//Need separate focus/blur notifications for non-native widgets
#define NS_FOCUS_EVENT_START 1300
#define NS_FOCUS_CONTENT (NS_FOCUS_EVENT_START)
#define NS_BLUR_CONTENT (NS_FOCUS_EVENT_START + 1)
#define NS_DRAGDROP_EVENT_START 1400
#define NS_DRAGDROP_ENTER (NS_DRAGDROP_EVENT_START)
#define NS_DRAGDROP_OVER (NS_DRAGDROP_EVENT_START + 1)
#define NS_DRAGDROP_EXIT (NS_DRAGDROP_EVENT_START + 2)
#define NS_DRAGDROP_DRAGDROP (NS_DRAGDROP_EVENT_START + 3)
#define NS_DRAGDROP_GESTURE (NS_DRAGDROP_EVENT_START + 4)
#define NS_DRAGDROP_DRAG (NS_DRAGDROP_EVENT_START + 5)
#define NS_DRAGDROP_END (NS_DRAGDROP_EVENT_START + 6)
#define NS_DRAGDROP_START (NS_DRAGDROP_EVENT_START + 7)
#define NS_DRAGDROP_DROP (NS_DRAGDROP_EVENT_START + 8)
#define NS_DRAGDROP_OVER_SYNTH (NS_DRAGDROP_EVENT_START + 1)
#define NS_DRAGDROP_EXIT_SYNTH (NS_DRAGDROP_EVENT_START + 2)
#define NS_DRAGDROP_LEAVE_SYNTH (NS_DRAGDROP_EVENT_START + 9)
// Events for popups
#define NS_XUL_EVENT_START 1500
#define NS_XUL_POPUP_SHOWING (NS_XUL_EVENT_START)
#define NS_XUL_POPUP_SHOWN (NS_XUL_EVENT_START+1)
#define NS_XUL_POPUP_HIDING (NS_XUL_EVENT_START+2)
#define NS_XUL_POPUP_HIDDEN (NS_XUL_EVENT_START+3)
// NS_XUL_COMMAND used to be here (NS_XUL_EVENT_START+4)
#define NS_XUL_BROADCAST (NS_XUL_EVENT_START+5)
#define NS_XUL_COMMAND_UPDATE (NS_XUL_EVENT_START+6)
//@}
// Scroll events
#define NS_MOUSE_SCROLL_START 1600
#define NS_MOUSE_SCROLL (NS_MOUSE_SCROLL_START)
#define NS_MOUSE_PIXEL_SCROLL (NS_MOUSE_SCROLL_START + 1)
#define NS_SCROLLPORT_START 1700
#define NS_SCROLLPORT_UNDERFLOW (NS_SCROLLPORT_START)
#define NS_SCROLLPORT_OVERFLOW (NS_SCROLLPORT_START+1)
#define NS_MUTATION_START 1800
#define NS_MUTATION_SUBTREEMODIFIED (NS_MUTATION_START)
#define NS_MUTATION_NODEINSERTED (NS_MUTATION_START+1)
#define NS_MUTATION_NODEREMOVED (NS_MUTATION_START+2)
#define NS_MUTATION_NODEREMOVEDFROMDOCUMENT (NS_MUTATION_START+3)
#define NS_MUTATION_NODEINSERTEDINTODOCUMENT (NS_MUTATION_START+4)
#define NS_MUTATION_ATTRMODIFIED (NS_MUTATION_START+5)
#define NS_MUTATION_CHARACTERDATAMODIFIED (NS_MUTATION_START+6)
#define NS_MUTATION_END (NS_MUTATION_START+6)
#define NS_USER_DEFINED_EVENT 2000
// composition events
#define NS_COMPOSITION_EVENT_START 2200
#define NS_COMPOSITION_START (NS_COMPOSITION_EVENT_START)
// NS_COMPOSITION_END is the message for DOM compositionend event.
// This event should NOT be dispatched from widget if NS_COMPOSITION_COMMIT
// is available.
#define NS_COMPOSITION_END (NS_COMPOSITION_EVENT_START + 1)
// NS_COMPOSITION_UPDATE is the message for DOM compositionupdate event.
// This event should NOT be dispatched from widget since it will be dispatched
// by mozilla::TextComposition automatically if NS_COMPOSITION_CHANGE event
// will change composition string.
#define NS_COMPOSITION_UPDATE (NS_COMPOSITION_EVENT_START + 2)
// NS_COMPOSITION_CHANGE is the message for representing a change of
// composition string. This should be dispatched from widget even if
// composition string isn't changed but the ranges are changed. This causes
// a DOM "text" event which is a non-standard DOM event.
#define NS_COMPOSITION_CHANGE (NS_COMPOSITION_EVENT_START + 3)
// NS_COMPOSITION_COMMIT_AS_IS is the message for representing a commit of
// composition string. TextComposition will commit composition with the
// last data. TextComposition will dispatch this event to the DOM tree as
// NS_COMPOSITION_CHANGE without clause information. After that,
// NS_COMPOSITION_END will be dispatched automatically.
// Its mData and mRanges should be empty and nullptr.
#define NS_COMPOSITION_COMMIT_AS_IS (NS_COMPOSITION_EVENT_START + 4)
// NS_COMPOSITION_COMMIT is the message for representing a commit of
// composition string with its mData value. TextComposition will dispatch this
// event to the DOM tree as NS_COMPOSITION_CHANGE without clause information.
// After that, NS_COMPOSITION_END will be dispatched automatically.
// Its mRanges should be nullptr.
#define NS_COMPOSITION_COMMIT (NS_COMPOSITION_EVENT_START + 5)
// UI events
#define NS_UI_EVENT_START 2500
// this is not to be confused with NS_ACTIVATE!
#define NS_UI_ACTIVATE (NS_UI_EVENT_START)
#define NS_UI_FOCUSIN (NS_UI_EVENT_START + 1)
#define NS_UI_FOCUSOUT (NS_UI_EVENT_START + 2)
// pagetransition events
#define NS_PAGETRANSITION_START 2700
#define NS_PAGE_SHOW (NS_PAGETRANSITION_START + 1)
#define NS_PAGE_HIDE (NS_PAGETRANSITION_START + 2)
// SVG events
#define NS_SVG_EVENT_START 2800
#define NS_SVG_LOAD (NS_SVG_EVENT_START)
#define NS_SVG_UNLOAD (NS_SVG_EVENT_START + 1)
#define NS_SVG_ABORT (NS_SVG_EVENT_START + 2)
#define NS_SVG_ERROR (NS_SVG_EVENT_START + 3)
#define NS_SVG_RESIZE (NS_SVG_EVENT_START + 4)
#define NS_SVG_SCROLL (NS_SVG_EVENT_START + 5)
// SVG Zoom events
#define NS_SVGZOOM_EVENT_START 2900
#define NS_SVG_ZOOM (NS_SVGZOOM_EVENT_START)
// XUL command events
#define NS_XULCOMMAND_EVENT_START 3000
#define NS_XUL_COMMAND (NS_XULCOMMAND_EVENT_START)
// Cut, copy, paste events
#define NS_CUTCOPYPASTE_EVENT_START 3100
#define NS_COPY (NS_CUTCOPYPASTE_EVENT_START)
#define NS_CUT (NS_CUTCOPYPASTE_EVENT_START + 1)
#define NS_PASTE (NS_CUTCOPYPASTE_EVENT_START + 2)
// Query the content information
#define NS_QUERY_CONTENT_EVENT_START 3200
// Query for the selected text information, it return the selection offset,
// selection length and selected text.
#define NS_QUERY_SELECTED_TEXT (NS_QUERY_CONTENT_EVENT_START)
// Query for the text content of specified range, it returns actual lengh (if
// the specified range is too long) and the text of the specified range.
// Returns the entire text if requested length > actual length.
#define NS_QUERY_TEXT_CONTENT (NS_QUERY_CONTENT_EVENT_START + 1)
// Query for the caret rect of nth insertion point. The offset of the result is
// relative position from the top level widget.
#define NS_QUERY_CARET_RECT (NS_QUERY_CONTENT_EVENT_START + 3)
// Query for the bounding rect of a range of characters. This works on any
// valid character range given offset and length. Result is relative to top
// level widget coordinates
#define NS_QUERY_TEXT_RECT (NS_QUERY_CONTENT_EVENT_START + 4)
// Query for the bounding rect of the current focused frame. Result is relative
// to top level widget coordinates
#define NS_QUERY_EDITOR_RECT (NS_QUERY_CONTENT_EVENT_START + 5)
// Query for the current state of the content. The particular members of
// mReply that are set for each query content event will be valid on success.
#define NS_QUERY_CONTENT_STATE (NS_QUERY_CONTENT_EVENT_START + 6)
// Query for the selection in the form of a nsITransferable.
#define NS_QUERY_SELECTION_AS_TRANSFERABLE (NS_QUERY_CONTENT_EVENT_START + 7)
// Query for character at a point. This returns the character offset and its
// rect. The point is specified by Event::refPoint.
#define NS_QUERY_CHARACTER_AT_POINT (NS_QUERY_CONTENT_EVENT_START + 8)
// Query if the DOM element under Event::refPoint belongs to our widget
// or not.
#define NS_QUERY_DOM_WIDGET_HITTEST (NS_QUERY_CONTENT_EVENT_START + 9)
// Video events
#define NS_MEDIA_EVENT_START 3300
#define NS_LOADSTART (NS_MEDIA_EVENT_START)
#define NS_PROGRESS (NS_MEDIA_EVENT_START+1)
#define NS_SUSPEND (NS_MEDIA_EVENT_START+2)
#define NS_EMPTIED (NS_MEDIA_EVENT_START+3)
#define NS_STALLED (NS_MEDIA_EVENT_START+4)
#define NS_PLAY (NS_MEDIA_EVENT_START+5)
#define NS_PAUSE (NS_MEDIA_EVENT_START+6)
#define NS_LOADEDMETADATA (NS_MEDIA_EVENT_START+7)
#define NS_LOADEDDATA (NS_MEDIA_EVENT_START+8)
#define NS_WAITING (NS_MEDIA_EVENT_START+9)
#define NS_PLAYING (NS_MEDIA_EVENT_START+10)
#define NS_CANPLAY (NS_MEDIA_EVENT_START+11)
#define NS_CANPLAYTHROUGH (NS_MEDIA_EVENT_START+12)
#define NS_SEEKING (NS_MEDIA_EVENT_START+13)
#define NS_SEEKED (NS_MEDIA_EVENT_START+14)
#define NS_TIMEUPDATE (NS_MEDIA_EVENT_START+15)
#define NS_ENDED (NS_MEDIA_EVENT_START+16)
#define NS_RATECHANGE (NS_MEDIA_EVENT_START+17)
#define NS_DURATIONCHANGE (NS_MEDIA_EVENT_START+18)
#define NS_VOLUMECHANGE (NS_MEDIA_EVENT_START+19)
#define NS_NEED_KEY (NS_MEDIA_EVENT_START+20)
// paint notification events
#define NS_NOTIFYPAINT_START 3400
#define NS_AFTERPAINT (NS_NOTIFYPAINT_START)
// Simple gesture events
#define NS_SIMPLE_GESTURE_EVENT_START 3500
#define NS_SIMPLE_GESTURE_SWIPE_START (NS_SIMPLE_GESTURE_EVENT_START)
#define NS_SIMPLE_GESTURE_SWIPE_UPDATE (NS_SIMPLE_GESTURE_EVENT_START+1)
#define NS_SIMPLE_GESTURE_SWIPE_END (NS_SIMPLE_GESTURE_EVENT_START+2)
#define NS_SIMPLE_GESTURE_SWIPE (NS_SIMPLE_GESTURE_EVENT_START+3)
#define NS_SIMPLE_GESTURE_MAGNIFY_START (NS_SIMPLE_GESTURE_EVENT_START+4)
#define NS_SIMPLE_GESTURE_MAGNIFY_UPDATE (NS_SIMPLE_GESTURE_EVENT_START+5)
#define NS_SIMPLE_GESTURE_MAGNIFY (NS_SIMPLE_GESTURE_EVENT_START+6)
#define NS_SIMPLE_GESTURE_ROTATE_START (NS_SIMPLE_GESTURE_EVENT_START+7)
#define NS_SIMPLE_GESTURE_ROTATE_UPDATE (NS_SIMPLE_GESTURE_EVENT_START+8)
#define NS_SIMPLE_GESTURE_ROTATE (NS_SIMPLE_GESTURE_EVENT_START+9)
#define NS_SIMPLE_GESTURE_TAP (NS_SIMPLE_GESTURE_EVENT_START+10)
#define NS_SIMPLE_GESTURE_PRESSTAP (NS_SIMPLE_GESTURE_EVENT_START+11)
#define NS_SIMPLE_GESTURE_EDGE_STARTED (NS_SIMPLE_GESTURE_EVENT_START+12)
#define NS_SIMPLE_GESTURE_EDGE_CANCELED (NS_SIMPLE_GESTURE_EVENT_START+13)
#define NS_SIMPLE_GESTURE_EDGE_COMPLETED (NS_SIMPLE_GESTURE_EVENT_START+14)
// These are used to send native events to plugins.
#define NS_PLUGIN_EVENT_START 3600
#define NS_PLUGIN_INPUT_EVENT (NS_PLUGIN_EVENT_START)
#define NS_PLUGIN_FOCUS_EVENT (NS_PLUGIN_EVENT_START+1)
// Events to manipulate selection (WidgetSelectionEvent)
#define NS_SELECTION_EVENT_START 3700
// Clear any previous selection and set the given range as the selection
#define NS_SELECTION_SET (NS_SELECTION_EVENT_START)
// Events of commands for the contents
#define NS_CONTENT_COMMAND_EVENT_START 3800
#define NS_CONTENT_COMMAND_CUT (NS_CONTENT_COMMAND_EVENT_START)
#define NS_CONTENT_COMMAND_COPY (NS_CONTENT_COMMAND_EVENT_START+1)
#define NS_CONTENT_COMMAND_PASTE (NS_CONTENT_COMMAND_EVENT_START+2)
#define NS_CONTENT_COMMAND_DELETE (NS_CONTENT_COMMAND_EVENT_START+3)
#define NS_CONTENT_COMMAND_UNDO (NS_CONTENT_COMMAND_EVENT_START+4)
#define NS_CONTENT_COMMAND_REDO (NS_CONTENT_COMMAND_EVENT_START+5)
#define NS_CONTENT_COMMAND_PASTE_TRANSFERABLE (NS_CONTENT_COMMAND_EVENT_START+6)
// NS_CONTENT_COMMAND_SCROLL scrolls the nearest scrollable element to the
// currently focused content or latest DOM selection. This would normally be
// the same element scrolled by keyboard scroll commands, except that this event
// will scroll an element scrollable in either direction. I.e., if the nearest
// scrollable ancestor element can only be scrolled vertically, and horizontal
// scrolling is requested using this event, no scrolling will occur.
#define NS_CONTENT_COMMAND_SCROLL (NS_CONTENT_COMMAND_EVENT_START+7)
// Event to gesture notification
#define NS_GESTURENOTIFY_EVENT_START 3900
#define NS_ORIENTATION_EVENT 4000
#define NS_SCROLLAREA_EVENT_START 4100
#define NS_SCROLLEDAREACHANGED (NS_SCROLLAREA_EVENT_START)
#define NS_TRANSITION_EVENT_START 4200
#define NS_TRANSITION_END (NS_TRANSITION_EVENT_START)
#define NS_ANIMATION_EVENT_START 4250
#define NS_ANIMATION_START (NS_ANIMATION_EVENT_START)
#define NS_ANIMATION_END (NS_ANIMATION_EVENT_START + 1)
#define NS_ANIMATION_ITERATION (NS_ANIMATION_EVENT_START + 2)
#define NS_SMIL_TIME_EVENT_START 4300
#define NS_SMIL_BEGIN (NS_SMIL_TIME_EVENT_START)
#define NS_SMIL_END (NS_SMIL_TIME_EVENT_START + 1)
#define NS_SMIL_REPEAT (NS_SMIL_TIME_EVENT_START + 2)
#define NS_WEBAUDIO_EVENT_START 4350
#define NS_AUDIO_PROCESS (NS_WEBAUDIO_EVENT_START)
#define NS_AUDIO_COMPLETE (NS_WEBAUDIO_EVENT_START + 1)
// script notification events
#define NS_NOTIFYSCRIPT_START 4500
#define NS_BEFORE_SCRIPT_EXECUTE (NS_NOTIFYSCRIPT_START)
#define NS_AFTER_SCRIPT_EXECUTE (NS_NOTIFYSCRIPT_START+1)
#define NS_PRINT_EVENT_START 4600
#define NS_BEFOREPRINT (NS_PRINT_EVENT_START)
#define NS_AFTERPRINT (NS_PRINT_EVENT_START + 1)
#define NS_MESSAGE_EVENT_START 4700
#define NS_MESSAGE (NS_MESSAGE_EVENT_START)
// Open and close events
#define NS_OPENCLOSE_EVENT_START 4800
#define NS_OPEN (NS_OPENCLOSE_EVENT_START)
#define NS_CLOSE (NS_OPENCLOSE_EVENT_START+1)
// Device motion and orientation
#define NS_DEVICE_ORIENTATION_START 4900
#define NS_DEVICE_ORIENTATION (NS_DEVICE_ORIENTATION_START)
#define NS_DEVICE_MOTION (NS_DEVICE_ORIENTATION_START+1)
#define NS_DEVICE_PROXIMITY (NS_DEVICE_ORIENTATION_START+2)
#define NS_USER_PROXIMITY (NS_DEVICE_ORIENTATION_START+3)
#define NS_DEVICE_LIGHT (NS_DEVICE_ORIENTATION_START+4)
#define NS_SHOW_EVENT 5000
// Fullscreen DOM API
#define NS_FULL_SCREEN_START 5100
#define NS_FULLSCREENCHANGE (NS_FULL_SCREEN_START)
#define NS_FULLSCREENERROR (NS_FULL_SCREEN_START + 1)
#define NS_TOUCH_EVENT_START 5200
#define NS_TOUCH_START (NS_TOUCH_EVENT_START)
#define NS_TOUCH_MOVE (NS_TOUCH_EVENT_START+1)
#define NS_TOUCH_END (NS_TOUCH_EVENT_START+2)
#define NS_TOUCH_CANCEL (NS_TOUCH_EVENT_START+3)
// Pointerlock DOM API
#define NS_POINTERLOCK_START 5300
#define NS_POINTERLOCKCHANGE (NS_POINTERLOCK_START)
#define NS_POINTERLOCKERROR (NS_POINTERLOCK_START + 1)
#define NS_WHEEL_EVENT_START 5400
#define NS_WHEEL_WHEEL (NS_WHEEL_EVENT_START)
#define NS_WHEEL_START (NS_WHEEL_EVENT_START + 1)
#define NS_WHEEL_STOP (NS_WHEEL_EVENT_START + 2)
//System time is changed
#define NS_MOZ_TIME_CHANGE_EVENT 5500
// Network packet events.
#define NS_NETWORK_EVENT_START 5600
#define NS_NETWORK_UPLOAD_EVENT (NS_NETWORK_EVENT_START + 1)
#define NS_NETWORK_DOWNLOAD_EVENT (NS_NETWORK_EVENT_START + 2)
// MediaRecorder events.
#define NS_MEDIARECORDER_EVENT_START 5700
#define NS_MEDIARECORDER_DATAAVAILABLE (NS_MEDIARECORDER_EVENT_START + 1)
#define NS_MEDIARECORDER_WARNING (NS_MEDIARECORDER_EVENT_START + 2)
#define NS_MEDIARECORDER_STOP (NS_MEDIARECORDER_EVENT_START + 3)
// SpeakerManager events
#define NS_SPEAKERMANAGER_EVENT_START 5800
#define NS_SPEAKERMANAGER_SPEAKERFORCEDCHANGE (NS_SPEAKERMANAGER_EVENT_START + 1)
#ifdef MOZ_GAMEPAD
// Gamepad input events
#define NS_GAMEPAD_START 6000
#define NS_GAMEPAD_BUTTONDOWN (NS_GAMEPAD_START)
#define NS_GAMEPAD_BUTTONUP (NS_GAMEPAD_START+1)
#define NS_GAMEPAD_AXISMOVE (NS_GAMEPAD_START+2)
#define NS_GAMEPAD_CONNECTED (NS_GAMEPAD_START+3)
#define NS_GAMEPAD_DISCONNECTED (NS_GAMEPAD_START+4)
// Keep this defined to the same value as the event above
#define NS_GAMEPAD_END (NS_GAMEPAD_START+4)
#endif
// input and beforeinput events.
#define NS_EDITOR_EVENT_START 6100
#define NS_EDITOR_INPUT (NS_EDITOR_EVENT_START)
namespace IPC {
template<typename T>
struct ParamTraits;
}
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;
// 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, uint32_t aMessage, EventClassID aEventClassID)
: mClass(aEventClassID)
, message(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, uint32_t aMessage)
: mClass(eBasicEventClass)
, message(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;
}
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, message);
result->AssignEventData(*this, true);
result->mFlags = mFlags;
return result;
}
EventClassID mClass;
// See GUI MESSAGES,
uint32_t message;
// 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.
// message 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;
}
/**
* 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 message is one of mouse events.
*/
bool HasMouseEventMessage() const;
/**
* Returns true if the event message is one of drag events.
*/
bool HasDragEventMessage() const;
/**
* Returns true if the event message is one of key events.
*/
bool HasKeyEventMessage() const;
/**
* Returns true if the event message is one of composition events or text
* event.
*/
bool HasIMEEventMessage() const;
/**
* Returns true if the event message 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, uint32_t aMessage, nsIWidget* aWidget,
EventClassID aEventClassID)
: WidgetEvent(aIsTrusted, aMessage, aEventClassID)
, widget(aWidget)
{
}
WidgetGUIEvent()
{
}
public:
virtual WidgetGUIEvent* AsGUIEvent() MOZ_OVERRIDE { return this; }
WidgetGUIEvent(bool aIsTrusted, uint32_t aMessage, nsIWidget* aWidget) :
WidgetEvent(aIsTrusted, aMessage, eGUIEventClass),
widget(aWidget)
{
}
virtual WidgetEvent* Duplicate() const MOZ_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, message, 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 MOZ_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_META = 0x0020,
MODIFIER_NUMLOCK = 0x0040,
MODIFIER_SCROLLLOCK = 0x0080,
MODIFIER_SHIFT = 0x0100,
MODIFIER_SYMBOLLOCK = 0x0200,
MODIFIER_OS = 0x0400
};
/******************************************************************************
* 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_META "Meta"
#define NS_DOM_KEYNAME_NUMLOCK "NumLock"
#define NS_DOM_KEYNAME_SCROLLLOCK "ScrollLock"
#define NS_DOM_KEYNAME_SHIFT "Shift"
#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, uint32_t aMessage, nsIWidget* aWidget,
EventClassID aEventClassID)
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, aEventClassID)
, modifiers(0)
{
}
WidgetInputEvent()
{
}
public:
virtual WidgetInputEvent* AsInputEvent() MOZ_OVERRIDE { return this; }
WidgetInputEvent(bool aIsTrusted, uint32_t aMessage, nsIWidget* aWidget)
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, eInputEventClass)
, modifiers(0)
{
}
virtual WidgetEvent* Duplicate() const MOZ_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, message, 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();
// 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 indeicates the CapLock LED is turn on.
bool IsCapsLocked() const
{
return ((modifiers & MODIFIER_CAPSLOCK) != 0);
}
// true indeicates the NumLock LED is turn on.
bool IsNumLocked() const
{
return ((modifiers & MODIFIER_NUMLOCK) != 0);
}
// true indeicates the ScrollLock LED is turn on.
bool IsScrollLocked() const
{
return ((modifiers & MODIFIER_SCROLLLOCK) != 0);
}
// true indeicates 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 indeicates the ScrollLock LED is turn on.
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)
{
}
InternalUIEvent(bool aIsTrusted, uint32_t aMessage, nsIWidget* aWidget,
EventClassID aEventClassID)
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, aEventClassID)
, detail(0)
{
}
InternalUIEvent(bool aIsTrusted, uint32_t aMessage,
EventClassID aEventClassID)
: WidgetGUIEvent(aIsTrusted, aMessage, nullptr, aEventClassID)
, detail(0)
{
}
public:
virtual InternalUIEvent* AsUIEvent() MOZ_OVERRIDE { return this; }
InternalUIEvent(bool aIsTrusted, uint32_t aMessage)
: WidgetGUIEvent(aIsTrusted, aMessage, nullptr, eUIEventClass)
, detail(0)
{
}
virtual WidgetEvent* Duplicate() const MOZ_OVERRIDE
{
MOZ_ASSERT(mClass == eUIEventClass,
"Duplicate() must be overridden by sub class");
InternalUIEvent* result = new InternalUIEvent(false, message);
result->AssignUIEventData(*this, true);
result->mFlags = mFlags;
return result;
}
int32_t detail;
void AssignUIEventData(const InternalUIEvent& aEvent, bool aCopyTargets)
{
AssignGUIEventData(aEvent, aCopyTargets);
detail = aEvent.detail;
}
};
} // namespace mozilla
#endif // mozilla_BasicEvents_h__
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