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gecko-dev/widget/nsGUIEvent.h

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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 nsGUIEvent_h__
#define nsGUIEvent_h__
#include "nsCOMArray.h"
#include "nsPoint.h"
#include "nsRect.h"
#include "nsRegion.h"
#include "nsEvent.h"
#include "nsStringGlue.h"
#include "nsCOMPtr.h"
#include "nsIAtom.h"
#include "nsIDOMKeyEvent.h"
#include "nsIDOMMouseEvent.h"
#include "nsIDOMWheelEvent.h"
#include "nsIDOMDataTransfer.h"
#include "nsIDOMEventTarget.h"
#include "nsIDOMTouchEvent.h"
#include "nsWeakPtr.h"
#include "nsIWidget.h"
#include "nsTArray.h"
#include "nsTraceRefcnt.h"
#include "nsITransferable.h"
#include "nsIVariant.h"
#include "nsStyleConsts.h"
#include "nsAutoPtr.h"
#include <cstdlib> // for std::abs(int/long)
#include <cmath> // for std::abs(float/double)
namespace mozilla {
namespace dom {
class PBrowserParent;
class PBrowserChild;
}
namespace plugins {
class PPluginInstanceChild;
}
}
class nsRenderingContext;
class nsIMenuItem;
class nsIContent;
class nsIURI;
class nsHashKey;
/**
* Event Struct Types
*/
enum nsEventStructType {
// Generic events
NS_EVENT, // nsEvent
NS_GUI_EVENT, // nsGUIEvent
NS_INPUT_EVENT, // nsInputEvent
// Mouse related events
NS_MOUSE_EVENT, // nsMouseEvent
NS_MOUSE_SCROLL_EVENT, // nsMouseScrollEvent
NS_DRAG_EVENT, // nsDragEvent
NS_WHEEL_EVENT, // widget::WheelEvent
// Touchpad related events
NS_GESTURENOTIFY_EVENT, // nsGestureNotifyEvent
NS_SIMPLE_GESTURE_EVENT, // nsSimpleGestureEvent
NS_TOUCH_EVENT, // nsTouchEvent
// Key or IME events
NS_KEY_EVENT, // nsKeyEvent
NS_COMPOSITION_EVENT, // nsCompositionEvent
NS_TEXT_EVENT, // nsTextEvent
// IME related events
NS_QUERY_CONTENT_EVENT, // nsQueryContentEvent
NS_SELECTION_EVENT, // nsSelectionEvent
// Scroll related events
NS_SCROLLBAR_EVENT, // nsScrollbarEvent
NS_SCROLLPORT_EVENT, // nsScrollPortEvent
NS_SCROLLAREA_EVENT, // nsScrollAreaEvent
// DOM events
NS_UI_EVENT, // nsUIEvent
NS_SCRIPT_ERROR_EVENT, // nsScriptErrorEvent
NS_MUTATION_EVENT, // nsMutationEvent
NS_FORM_EVENT, // nsFormEvent
NS_FOCUS_EVENT, // nsFocusEvent
// SVG events
NS_SVG_EVENT, // nsEvent or nsGUIEvent
NS_SVGZOOM_EVENT, // nsGUIEvent
NS_SMIL_TIME_EVENT, // nsUIEvent
// CSS events
NS_TRANSITION_EVENT, // nsTransitionEvent
NS_ANIMATION_EVENT, // nsAnimationEvent
// Command events
NS_COMMAND_EVENT, // nsCommandEvent
NS_CONTENT_COMMAND_EVENT, // nsContentCommandEvent
// Plugin event
NS_PLUGIN_EVENT // nsPluginEvent
};
#define NS_EVENT_TYPE_NULL 0
#define NS_EVENT_TYPE_ALL 1 // Not a real event type
/**
* GUI MESSAGES
*/
//@{
#define NS_EVENT_NULL 0
#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_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)
// Indicates a resize will occur
#define NS_BEFORERESIZE_EVENT (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)
// The resolution at which a plugin should draw has changed, for
// example as the result of changing from a HiDPI mode to a non-
// HiDPI mode.
#define NS_PLUGIN_RESOLUTION_CHANGED (NS_WINDOW_START + 69)
#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_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_INPUT (NS_FORM_EVENT_START + 4)
#define NS_FORM_INVALID (NS_FORM_EVENT_START + 5)
//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)
// Mutation events defined elsewhere starting at 1800
#define NS_USER_DEFINED_EVENT 2000
// composition events
#define NS_COMPOSITION_EVENT_START 2200
#define NS_COMPOSITION_START (NS_COMPOSITION_EVENT_START)
#define NS_COMPOSITION_END (NS_COMPOSITION_EVENT_START + 1)
#define NS_COMPOSITION_UPDATE (NS_COMPOSITION_EVENT_START + 2)
// text events
#define NS_TEXT_START 2400
#define NS_TEXT_TEXT (NS_TEXT_START)
// 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 nsEvent::refPoint.
#define NS_QUERY_CHARACTER_AT_POINT (NS_QUERY_CONTENT_EVENT_START + 8)
// Query if the DOM element under nsEvent::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_MOZAUDIOAVAILABLE (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 (NS_SIMPLE_GESTURE_EVENT_START)
#define NS_SIMPLE_GESTURE_MAGNIFY_START (NS_SIMPLE_GESTURE_EVENT_START+1)
#define NS_SIMPLE_GESTURE_MAGNIFY_UPDATE (NS_SIMPLE_GESTURE_EVENT_START+2)
#define NS_SIMPLE_GESTURE_MAGNIFY (NS_SIMPLE_GESTURE_EVENT_START+3)
#define NS_SIMPLE_GESTURE_ROTATE_START (NS_SIMPLE_GESTURE_EVENT_START+4)
#define NS_SIMPLE_GESTURE_ROTATE_UPDATE (NS_SIMPLE_GESTURE_EVENT_START+5)
#define NS_SIMPLE_GESTURE_ROTATE (NS_SIMPLE_GESTURE_EVENT_START+6)
#define NS_SIMPLE_GESTURE_TAP (NS_SIMPLE_GESTURE_EVENT_START+7)
#define NS_SIMPLE_GESTURE_PRESSTAP (NS_SIMPLE_GESTURE_EVENT_START+8)
#define NS_SIMPLE_GESTURE_EDGEUI (NS_SIMPLE_GESTURE_EVENT_START+9)
// 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 (nsSelectionEvent)
#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)
// 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_ENTER (NS_TOUCH_EVENT_START+3)
#define NS_TOUCH_LEAVE (NS_TOUCH_EVENT_START+4)
#define NS_TOUCH_CANCEL (NS_TOUCH_EVENT_START+5)
// 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)
//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)
/**
* Return status for event processors, nsEventStatus, is defined in
* nsEvent.h.
*/
/**
* different types of (top-level) window z-level positioning
*/
enum nsWindowZ {
nsWindowZTop = 0, // on top
nsWindowZBottom, // on bottom
nsWindowZRelative // just below some specified widget
};
namespace mozilla {
namespace widget {
struct EventFlags
{
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
// nsDOMEvent::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, nsDOMEvent::StopPropagation() or
// nsDOMEvent::StopImmediatePropagation() has been called.
bool mPropagationStopped : 1;
// If mImmediatePropagationStopped is true,
// nsDOMEvent::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., nsDOMEvent::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;
// 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
// nsEventChainPreVisitor::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 the event is being handled in target phase, returns true.
bool InTargetPhase() const
{
return (mInBubblingPhase && mInCapturePhase);
}
EventFlags()
{
Clear();
}
inline void Clear()
{
SetRawFlags(0);
}
inline EventFlags operator|(const EventFlags& aOther) const
{
EventFlags flags;
flags.SetRawFlags(GetRawFlags() | aOther.GetRawFlags());
return flags;
}
inline EventFlags& operator|=(const EventFlags& aOther)
{
SetRawFlags(GetRawFlags() | aOther.GetRawFlags());
return *this;
}
private:
typedef uint32_t RawFlags;
inline void SetRawFlags(RawFlags aRawFlags)
{
MOZ_STATIC_ASSERT(sizeof(EventFlags) <= sizeof(RawFlags),
"mozilla::widget::EventFlags must not be bigger than the RawFlags");
memcpy(this, &aRawFlags, sizeof(EventFlags));
}
inline RawFlags GetRawFlags() const
{
RawFlags result = 0;
memcpy(&result, this, sizeof(EventFlags));
return result;
}
};
} // namespace widget
} // namespace mozilla
/**
* General event
*/
class nsEvent
{
protected:
nsEvent(bool isTrusted, uint32_t msg, nsEventStructType structType)
: eventStructType(structType),
message(msg),
refPoint(0, 0),
lastRefPoint(0, 0),
time(0),
userType(0)
{
MOZ_COUNT_CTOR(nsEvent);
mFlags.mIsTrusted = isTrusted;
mFlags.mCancelable = true;
mFlags.mBubbles = true;
}
nsEvent()
{
MOZ_COUNT_CTOR(nsEvent);
}
public:
nsEvent(bool isTrusted, uint32_t msg)
: eventStructType(NS_EVENT),
message(msg),
refPoint(0, 0),
lastRefPoint(0, 0),
time(0),
userType(0)
{
MOZ_COUNT_CTOR(nsEvent);
mFlags.mIsTrusted = isTrusted;
mFlags.mCancelable = true;
mFlags.mBubbles = true;
}
~nsEvent()
{
MOZ_COUNT_DTOR(nsEvent);
}
nsEvent(const nsEvent& aOther)
{
MOZ_COUNT_CTOR(nsEvent);
*this = aOther;
}
// See event struct types
nsEventStructType eventStructType;
// 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.
nsIntPoint refPoint;
// The previous refPoint, if known, used to calculate mouse movement deltas.
nsIntPoint lastRefPoint;
// Elapsed time, in milliseconds, from a platform-specific zero time
// to the time the message was created
uint64_t time;
// See EventFlags definition for the detail.
mozilla::widget::EventFlags mFlags;
// Additional type info for user defined events
nsCOMPtr<nsIAtom> userType;
// Event targets, needed by DOM Events
nsCOMPtr<nsIDOMEventTarget> target;
nsCOMPtr<nsIDOMEventTarget> currentTarget;
nsCOMPtr<nsIDOMEventTarget> originalTarget;
};
/**
* General graphic user interface event
*/
class nsGUIEvent : public nsEvent
{
protected:
nsGUIEvent(bool isTrusted, uint32_t msg, nsIWidget *w,
nsEventStructType structType)
: nsEvent(isTrusted, msg, structType),
widget(w), pluginEvent(nullptr)
{
}
nsGUIEvent()
: pluginEvent(nullptr)
{
}
public:
nsGUIEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsEvent(isTrusted, msg, NS_GUI_EVENT),
widget(w), pluginEvent(nullptr)
{
}
/// Originator of the event
nsCOMPtr<nsIWidget> widget;
/// Event for NPAPI plugin
void* pluginEvent;
};
/**
* Script error event
*/
class nsScriptErrorEvent : public nsEvent
{
public:
nsScriptErrorEvent(bool isTrusted, uint32_t msg)
: nsEvent(isTrusted, msg, NS_SCRIPT_ERROR_EVENT),
lineNr(0), errorMsg(nullptr), fileName(nullptr)
{
}
int32_t lineNr;
const PRUnichar* errorMsg;
const PRUnichar* fileName;
};
/**
* Scrollbar event
*/
class nsScrollbarEvent : public nsGUIEvent
{
public:
nsScrollbarEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsGUIEvent(isTrusted, msg, w, NS_SCROLLBAR_EVENT),
position(0)
{
}
/// ranges between scrollbar 0 and (maxRange - thumbSize). See nsIScrollbar
uint32_t position;
};
class nsScrollPortEvent : public nsGUIEvent
{
public:
enum orientType {
vertical = 0,
horizontal = 1,
both = 2
};
nsScrollPortEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsGUIEvent(isTrusted, msg, w, NS_SCROLLPORT_EVENT),
orient(vertical)
{
}
orientType orient;
};
class nsScrollAreaEvent : public nsGUIEvent
{
public:
nsScrollAreaEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsGUIEvent(isTrusted, msg, w, NS_SCROLLAREA_EVENT)
{
}
nsRect mArea;
};
class nsInputEvent : public nsGUIEvent
{
protected:
nsInputEvent(bool isTrusted, uint32_t msg, nsIWidget *w,
nsEventStructType structType)
: nsGUIEvent(isTrusted, msg, w, structType),
modifiers(0)
{
}
nsInputEvent()
{
}
public:
nsInputEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsGUIEvent(isTrusted, msg, w, NS_INPUT_EVENT),
modifiers(0)
{
}
// true indicates the shift key is down
bool IsShift() const
{
return ((modifiers & mozilla::widget::MODIFIER_SHIFT) != 0);
}
// true indicates the control key is down
bool IsControl() const
{
return ((modifiers & mozilla::widget::MODIFIER_CONTROL) != 0);
}
// true indicates the alt key is down
bool IsAlt() const
{
return ((modifiers & mozilla::widget::MODIFIER_ALT) != 0);
}
// true indicates the meta key is down (or, on Mac, the Command key)
bool IsMeta() const
{
return ((modifiers & mozilla::widget::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 & mozilla::widget::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 & mozilla::widget::MODIFIER_ALTGRAPH) != 0);
}
// true indeicates the CapLock LED is turn on.
bool IsCapsLocked() const
{
return ((modifiers & mozilla::widget::MODIFIER_CAPSLOCK) != 0);
}
// true indeicates the NumLock LED is turn on.
bool IsNumLocked() const
{
return ((modifiers & mozilla::widget::MODIFIER_NUMLOCK) != 0);
}
// true indeicates the ScrollLock LED is turn on.
bool IsScrollLocked() const
{
return ((modifiers & mozilla::widget::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 & mozilla::widget::MODIFIER_FN) != 0);
}
// true indeicates the ScrollLock LED is turn on.
bool IsSymbolLocked() const
{
return ((modifiers & mozilla::widget::MODIFIER_SYMBOLLOCK) != 0);
}
void InitBasicModifiers(bool aCtrlKey,
bool aAltKey,
bool aShiftKey,
bool aMetaKey)
{
modifiers = 0;
if (aCtrlKey) {
modifiers |= mozilla::widget::MODIFIER_CONTROL;
}
if (aAltKey) {
modifiers |= mozilla::widget::MODIFIER_ALT;
}
if (aShiftKey) {
modifiers |= mozilla::widget::MODIFIER_SHIFT;
}
if (aMetaKey) {
modifiers |= mozilla::widget::MODIFIER_META;
}
}
mozilla::widget::Modifiers modifiers;
};
/**
* Mouse event
*/
class nsMouseEvent_base : public nsInputEvent
{
private:
friend class mozilla::dom::PBrowserParent;
friend class mozilla::dom::PBrowserChild;
public:
nsMouseEvent_base()
{
}
nsMouseEvent_base(bool isTrusted, uint32_t msg, nsIWidget *w,
nsEventStructType type)
: nsInputEvent(isTrusted, msg, w, type), button(0), buttons(0),
pressure(0), inputSource(nsIDOMMouseEvent::MOZ_SOURCE_MOUSE) {}
/// The possible related target
nsCOMPtr<nsISupports> relatedTarget;
int16_t button;
int16_t buttons;
// Finger or touch pressure of event
// ranges between 0.0 and 1.0
float pressure;
// Possible values at nsIDOMMouseEvent
uint16_t inputSource;
};
class nsMouseEvent : public nsMouseEvent_base
{
private:
friend class mozilla::dom::PBrowserParent;
friend class mozilla::dom::PBrowserChild;
public:
enum buttonType { eLeftButton = 0, eMiddleButton = 1, eRightButton = 2 };
enum buttonsFlag { eLeftButtonFlag = 0x01,
eRightButtonFlag = 0x02,
eMiddleButtonFlag = 0x04,
// typicall, "back" button being left side of 5-button
// mice, see "buttons" attribute document of DOM3 Events.
e4thButtonFlag = 0x08,
// typicall, "forward" button being right side of 5-button
// mice, see "buttons" attribute document of DOM3 Events.
e5thButtonFlag = 0x10 };
enum reasonType { eReal, eSynthesized };
enum contextType { eNormal, eContextMenuKey };
enum exitType { eChild, eTopLevel };
nsMouseEvent()
{
}
protected:
nsMouseEvent(bool isTrusted, uint32_t msg, nsIWidget *w,
nsEventStructType structType, reasonType aReason)
: nsMouseEvent_base(isTrusted, msg, w, structType),
acceptActivation(false), ignoreRootScrollFrame(false),
reason(aReason), context(eNormal), exit(eChild), clickCount(0)
{
switch (msg) {
case NS_MOUSE_MOVE:
mFlags.mCancelable = false;
break;
case NS_MOUSEENTER:
case NS_MOUSELEAVE:
mFlags.mBubbles = false;
mFlags.mCancelable = false;
break;
default:
break;
}
}
public:
nsMouseEvent(bool isTrusted, uint32_t msg, nsIWidget *w,
reasonType aReason, contextType aContext = eNormal)
: nsMouseEvent_base(isTrusted, msg, w, NS_MOUSE_EVENT),
acceptActivation(false), ignoreRootScrollFrame(false),
reason(aReason), context(aContext), exit(eChild), clickCount(0)
{
switch (msg) {
case NS_MOUSE_MOVE:
mFlags.mCancelable = false;
break;
case NS_MOUSEENTER:
case NS_MOUSELEAVE:
mFlags.mBubbles = false;
mFlags.mCancelable = false;
break;
case NS_CONTEXTMENU:
button = (context == eNormal) ? eRightButton : eLeftButton;
break;
default:
break;
}
}
#ifdef DEBUG
~nsMouseEvent() {
NS_WARN_IF_FALSE(message != NS_CONTEXTMENU ||
button ==
((context == eNormal) ? eRightButton : eLeftButton),
"Wrong button set to NS_CONTEXTMENU event?");
}
#endif
/// Special return code for MOUSE_ACTIVATE to signal
/// if the target accepts activation (1), or denies it (0)
bool acceptActivation;
// Whether the event should ignore scroll frame bounds
// during dispatch.
bool ignoreRootScrollFrame;
reasonType reason : 4;
contextType context : 4;
exitType exit;
/// The number of mouse clicks
uint32_t clickCount;
};
/**
* Drag event
*/
class nsDragEvent : public nsMouseEvent
{
public:
nsDragEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsMouseEvent(isTrusted, msg, w, NS_DRAG_EVENT, eReal),
userCancelled(false)
{
mFlags.mCancelable =
(msg != NS_DRAGDROP_EXIT_SYNTH &&
msg != NS_DRAGDROP_LEAVE_SYNTH &&
msg != NS_DRAGDROP_END);
}
nsCOMPtr<nsIDOMDataTransfer> dataTransfer;
bool userCancelled;
};
/**
* Keyboard event
*/
struct nsAlternativeCharCode {
nsAlternativeCharCode(uint32_t aUnshiftedCharCode,
uint32_t aShiftedCharCode) :
mUnshiftedCharCode(aUnshiftedCharCode), mShiftedCharCode(aShiftedCharCode)
{
}
uint32_t mUnshiftedCharCode;
uint32_t mShiftedCharCode;
};
class nsKeyEvent : public nsInputEvent
{
private:
friend class mozilla::dom::PBrowserParent;
friend class mozilla::dom::PBrowserChild;
public:
nsKeyEvent()
{
}
nsKeyEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsInputEvent(isTrusted, msg, w, NS_KEY_EVENT),
keyCode(0), charCode(0),
location(nsIDOMKeyEvent::DOM_KEY_LOCATION_STANDARD), isChar(0)
{
}
/// see NS_VK codes
uint32_t keyCode;
/// OS translated Unicode char
uint32_t charCode;
// One of nsIDOMKeyEvent::DOM_KEY_LOCATION_*
uint32_t location;
// OS translated Unicode chars which are used for accesskey and accelkey
// handling. The handlers will try from first character to last character.
nsTArray<nsAlternativeCharCode> alternativeCharCodes;
// indicates whether the event signifies a printable character
bool isChar;
};
/**
* IME Related Events
*/
struct nsTextRangeStyle
{
enum {
LINESTYLE_NONE = NS_STYLE_TEXT_DECORATION_STYLE_NONE,
LINESTYLE_SOLID = NS_STYLE_TEXT_DECORATION_STYLE_SOLID,
LINESTYLE_DOTTED = NS_STYLE_TEXT_DECORATION_STYLE_DOTTED,
LINESTYLE_DASHED = NS_STYLE_TEXT_DECORATION_STYLE_DASHED,
LINESTYLE_DOUBLE = NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE,
LINESTYLE_WAVY = NS_STYLE_TEXT_DECORATION_STYLE_WAVY
};
enum {
DEFINED_NONE = 0x00,
DEFINED_LINESTYLE = 0x01,
DEFINED_FOREGROUND_COLOR = 0x02,
DEFINED_BACKGROUND_COLOR = 0x04,
DEFINED_UNDERLINE_COLOR = 0x08
};
// Initialize all members, because nsTextRange instances may be compared by
// memcomp.
nsTextRangeStyle()
{
Clear();
}
void Clear()
{
mDefinedStyles = DEFINED_NONE;
mLineStyle = LINESTYLE_NONE;
mIsBoldLine = false;
mForegroundColor = mBackgroundColor = mUnderlineColor = NS_RGBA(0, 0, 0, 0);
}
bool IsDefined() const { return mDefinedStyles != DEFINED_NONE; }
bool IsLineStyleDefined() const
{
return (mDefinedStyles & DEFINED_LINESTYLE) != 0;
}
bool IsForegroundColorDefined() const
{
return (mDefinedStyles & DEFINED_FOREGROUND_COLOR) != 0;
}
bool IsBackgroundColorDefined() const
{
return (mDefinedStyles & DEFINED_BACKGROUND_COLOR) != 0;
}
bool IsUnderlineColorDefined() const
{
return (mDefinedStyles & DEFINED_UNDERLINE_COLOR) != 0;
}
bool IsNoChangeStyle() const
{
return !IsForegroundColorDefined() && !IsBackgroundColorDefined() &&
IsLineStyleDefined() && mLineStyle == LINESTYLE_NONE;
}
bool Equals(const nsTextRangeStyle& aOther)
{
if (mDefinedStyles != aOther.mDefinedStyles)
return false;
if (IsLineStyleDefined() && (mLineStyle != aOther.mLineStyle ||
!mIsBoldLine != !aOther.mIsBoldLine))
return false;
if (IsForegroundColorDefined() &&
(mForegroundColor != aOther.mForegroundColor))
return false;
if (IsBackgroundColorDefined() &&
(mBackgroundColor != aOther.mBackgroundColor))
return false;
if (IsUnderlineColorDefined() &&
(mUnderlineColor != aOther.mUnderlineColor))
return false;
return true;
}
bool operator !=(const nsTextRangeStyle &aOther)
{
return !Equals(aOther);
}
bool operator ==(const nsTextRangeStyle &aOther)
{
return Equals(aOther);
}
uint8_t mDefinedStyles;
uint8_t mLineStyle; // DEFINED_LINESTYLE
bool mIsBoldLine; // DEFINED_LINESTYLE
nscolor mForegroundColor; // DEFINED_FOREGROUND_COLOR
nscolor mBackgroundColor; // DEFINED_BACKGROUND_COLOR
nscolor mUnderlineColor; // DEFINED_UNDERLINE_COLOR
};
struct nsTextRange
{
nsTextRange()
: mStartOffset(0), mEndOffset(0), mRangeType(0)
{
}
uint32_t mStartOffset;
uint32_t mEndOffset;
uint32_t mRangeType;
nsTextRangeStyle mRangeStyle;
};
typedef nsTextRange* nsTextRangeArray;
class nsTextEvent : public nsInputEvent
{
private:
friend class mozilla::dom::PBrowserParent;
friend class mozilla::dom::PBrowserChild;
friend class mozilla::plugins::PPluginInstanceChild;
nsTextEvent()
{
}
public:
uint32_t seqno;
public:
nsTextEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsInputEvent(isTrusted, msg, w, NS_TEXT_EVENT),
rangeCount(0), rangeArray(nullptr), isChar(false)
{
}
nsString theText;
uint32_t rangeCount;
// Note that the range array may not specify a caret position; in that
// case there will be no range of type NS_TEXTRANGE_CARETPOSITION in the
// array.
nsTextRangeArray rangeArray;
bool isChar;
};
class nsCompositionEvent : public nsGUIEvent
{
private:
friend class mozilla::dom::PBrowserParent;
friend class mozilla::dom::PBrowserChild;
nsCompositionEvent()
{
}
public:
uint32_t seqno;
public:
nsCompositionEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsGUIEvent(isTrusted, msg, w, NS_COMPOSITION_EVENT)
{
// 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;
}
nsString data;
};
/**
* nsMouseScrollEvent is used for legacy DOM mouse scroll events, i.e.,
* DOMMouseScroll and MozMousePixelScroll event. These events are NOT hanbled
* by ESM even if widget dispatches them. Use new widget::WheelEvent instead.
*/
class nsMouseScrollEvent : public nsMouseEvent_base
{
private:
nsMouseScrollEvent()
{
}
public:
nsMouseScrollEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsMouseEvent_base(isTrusted, msg, w, NS_MOUSE_SCROLL_EVENT),
delta(0), isHorizontal(false)
{
}
int32_t delta;
bool isHorizontal;
};
/**
* WheelEvent is used only for DOM Level 3 WheelEvent (dom::DOMWheelEvent).
*/
namespace mozilla {
namespace widget {
class WheelEvent : public nsMouseEvent_base
{
private:
friend class mozilla::dom::PBrowserParent;
friend class mozilla::dom::PBrowserChild;
WheelEvent()
{
}
public:
WheelEvent(bool aIsTrusted, uint32_t aMessage, nsIWidget* aWidget) :
nsMouseEvent_base(aIsTrusted, aMessage, aWidget, NS_WHEEL_EVENT),
deltaX(0.0), deltaY(0.0), deltaZ(0.0),
deltaMode(nsIDOMWheelEvent::DOM_DELTA_PIXEL),
customizedByUserPrefs(false), isMomentum(false), isPixelOnlyDevice(false),
lineOrPageDeltaX(0), lineOrPageDeltaY(0), scrollType(SCROLL_DEFAULT),
overflowDeltaX(0.0), overflowDeltaY(0.0)
{
}
// NOTE: deltaX, deltaY and deltaZ may be customized by
// mousewheel.*.delta_multiplier_* prefs which are applied by
// nsEventStateManager. So, after widget dispatches this event,
// these delta values may have different values than before.
double deltaX;
double deltaY;
double deltaZ;
// Should be one of nsIDOMWheelEvent::DOM_DELTA_*
uint32_t deltaMode;
// Following members are for internal use only, not for DOM event.
// If the delta values are computed from prefs, this value is true.
// Otherwise, i.e., they are computed from native events, false.
bool customizedByUserPrefs;
// true if the event is caused by momentum.
bool isMomentum;
// If device event handlers don't know when they should set lineOrPageDeltaX
// and lineOrPageDeltaY, this is true. Otherwise, false.
// If isPixelOnlyDevice is true, ESM will generate NS_MOUSE_SCROLL events
// when accumulated pixel delta values reach a line height.
bool isPixelOnlyDevice;
// If widget sets lineOrPageDelta, nsEventStateManager will dispatch
// NS_MOUSE_SCROLL event for compatibility. Note that the delta value means
// pages if the deltaMode is DOM_DELTA_PAGE, otherwise, lines.
int32_t lineOrPageDeltaX;
int32_t lineOrPageDeltaY;
// When the default action for an wheel event is moving history or zooming,
// need to chose a delta value for doing it.
int32_t GetPreferredIntDelta()
{
if (!lineOrPageDeltaX && !lineOrPageDeltaY) {
return 0;
}
if (lineOrPageDeltaY && !lineOrPageDeltaX) {
return lineOrPageDeltaY;
}
if (lineOrPageDeltaX && !lineOrPageDeltaY) {
return lineOrPageDeltaX;
}
if ((lineOrPageDeltaX < 0 && lineOrPageDeltaY > 0) ||
(lineOrPageDeltaX > 0 && lineOrPageDeltaY < 0)) {
return 0; // We cannot guess the answer in this case.
}
return (std::abs(lineOrPageDeltaX) > std::abs(lineOrPageDeltaY)) ?
lineOrPageDeltaX : lineOrPageDeltaY;
}
// Scroll type
// The default value is SCROLL_DEFAULT, which means nsEventStateManager will
// select preferred scroll type automatically.
enum ScrollType {
SCROLL_DEFAULT,
SCROLL_SYNCHRONOUSLY,
SCROLL_ASYNCHRONOUSELY,
SCROLL_SMOOTHLY
};
ScrollType scrollType;
// overflowed delta values for scroll, these values are set by
// nsEventStateManger. If the default action of the wheel event isn't scroll,
// these values always zero. Otherwise, remaning delta values which are
// not used by scroll are set.
// NOTE: deltaX, deltaY and deltaZ may be modified by nsEventStateManager.
// However, overflowDeltaX and overflowDeltaY indicate unused original
// delta values which are not applied the delta_multiplier prefs.
// So, if widget wanted to know the actual direction to be scrolled,
// it would need to check the deltaX and deltaY.
double overflowDeltaX;
double overflowDeltaY;
};
} // namespace widget
} // namespace mozilla
/*
* Gesture Notify Event:
*
* This event is the first event generated when the user touches
* the screen with a finger, and it's meant to decide what kind
* of action we'll use for that touch interaction.
*
* The event is dispatched to the layout and based on what is underneath
* the initial contact point it's then decided if we should pan
* (finger scrolling) or drag the target element.
*/
class nsGestureNotifyEvent : public nsGUIEvent
{
public:
enum ePanDirection {
ePanNone,
ePanVertical,
ePanHorizontal,
ePanBoth
};
ePanDirection panDirection;
bool displayPanFeedback;
nsGestureNotifyEvent(bool aIsTrusted, uint32_t aMsg, nsIWidget *aWidget):
nsGUIEvent(aIsTrusted, aMsg, aWidget, NS_GESTURENOTIFY_EVENT),
panDirection(ePanNone),
displayPanFeedback(false)
{
}
};
class nsQueryContentEvent : public nsGUIEvent
{
private:
friend class mozilla::dom::PBrowserParent;
friend class mozilla::dom::PBrowserChild;
nsQueryContentEvent()
{
mReply.mContentsRoot = nullptr;
mReply.mFocusedWidget = nullptr;
}
public:
nsQueryContentEvent(bool aIsTrusted, uint32_t aMsg, nsIWidget *aWidget) :
nsGUIEvent(aIsTrusted, aMsg, aWidget, NS_QUERY_CONTENT_EVENT),
mSucceeded(false), mWasAsync(false)
{
}
void InitForQueryTextContent(uint32_t aOffset, uint32_t aLength)
{
NS_ASSERTION(message == NS_QUERY_TEXT_CONTENT,
"wrong initializer is called");
mInput.mOffset = aOffset;
mInput.mLength = aLength;
}
void InitForQueryCaretRect(uint32_t aOffset)
{
NS_ASSERTION(message == NS_QUERY_CARET_RECT,
"wrong initializer is called");
mInput.mOffset = aOffset;
}
void InitForQueryTextRect(uint32_t aOffset, uint32_t aLength)
{
NS_ASSERTION(message == NS_QUERY_TEXT_RECT,
"wrong initializer is called");
mInput.mOffset = aOffset;
mInput.mLength = aLength;
}
void InitForQueryDOMWidgetHittest(nsIntPoint& aPoint)
{
NS_ASSERTION(message == NS_QUERY_DOM_WIDGET_HITTEST,
"wrong initializer is called");
refPoint = aPoint;
}
uint32_t GetSelectionStart(void) const
{
NS_ASSERTION(message == NS_QUERY_SELECTED_TEXT,
"not querying selection");
return mReply.mOffset + (mReply.mReversed ? mReply.mString.Length() : 0);
}
uint32_t GetSelectionEnd(void) const
{
NS_ASSERTION(message == NS_QUERY_SELECTED_TEXT,
"not querying selection");
return mReply.mOffset + (mReply.mReversed ? 0 : mReply.mString.Length());
}
bool mSucceeded;
bool mWasAsync;
struct {
uint32_t mOffset;
uint32_t mLength;
} mInput;
struct {
void* mContentsRoot;
uint32_t mOffset;
nsString mString;
nsIntRect mRect; // Finally, the coordinates is system coordinates.
// The return widget has the caret. This is set at all query events.
nsIWidget* mFocusedWidget;
bool mReversed; // true if selection is reversed (end < start)
bool mHasSelection; // true if the selection exists
bool mWidgetIsHit; // true if DOM element under mouse belongs to widget
// used by NS_QUERY_SELECTION_AS_TRANSFERABLE
nsCOMPtr<nsITransferable> mTransferable;
} mReply;
enum {
NOT_FOUND = UINT32_MAX
};
// values of mComputedScrollAction
enum {
SCROLL_ACTION_NONE,
SCROLL_ACTION_LINE,
SCROLL_ACTION_PAGE
};
};
class nsFocusEvent : public nsEvent
{
public:
nsFocusEvent(bool isTrusted, uint32_t msg)
: nsEvent(isTrusted, msg, NS_FOCUS_EVENT),
fromRaise(false),
isRefocus(false)
{
}
bool fromRaise;
bool isRefocus;
};
class nsSelectionEvent : public nsGUIEvent
{
private:
friend class mozilla::dom::PBrowserParent;
friend class mozilla::dom::PBrowserChild;
nsSelectionEvent()
{
}
public:
uint32_t seqno;
public:
nsSelectionEvent(bool aIsTrusted, uint32_t aMsg, nsIWidget *aWidget) :
nsGUIEvent(aIsTrusted, aMsg, aWidget, NS_SELECTION_EVENT),
mExpandToClusterBoundary(true), mSucceeded(false)
{
}
uint32_t mOffset; // start offset of selection
uint32_t mLength; // length of selection
bool mReversed; // selection "anchor" should be in front
bool mExpandToClusterBoundary; // cluster-based or character-based
bool mSucceeded;
};
class nsContentCommandEvent : public nsGUIEvent
{
public:
nsContentCommandEvent(bool aIsTrusted, uint32_t aMsg, nsIWidget *aWidget,
bool aOnlyEnabledCheck = false) :
nsGUIEvent(aIsTrusted, aMsg, aWidget, NS_CONTENT_COMMAND_EVENT),
mOnlyEnabledCheck(bool(aOnlyEnabledCheck)),
mSucceeded(false), mIsEnabled(false)
{
}
// NS_CONTENT_COMMAND_PASTE_TRANSFERABLE
nsCOMPtr<nsITransferable> mTransferable; // [in]
// NS_CONTENT_COMMAND_SCROLL
// for mScroll.mUnit
enum {
eCmdScrollUnit_Line,
eCmdScrollUnit_Page,
eCmdScrollUnit_Whole
};
struct ScrollInfo {
ScrollInfo() :
mAmount(0), mUnit(eCmdScrollUnit_Line), mIsHorizontal(false)
{
}
int32_t mAmount; // [in]
uint8_t mUnit; // [in]
bool mIsHorizontal; // [in]
} mScroll;
bool mOnlyEnabledCheck; // [in]
bool mSucceeded; // [out]
bool mIsEnabled; // [out]
};
class nsTouchEvent : public nsInputEvent
{
public:
nsTouchEvent()
{
}
nsTouchEvent(bool isTrusted, nsTouchEvent *aEvent)
: nsInputEvent(isTrusted,
aEvent->message,
aEvent->widget,
NS_TOUCH_EVENT)
{
modifiers = aEvent->modifiers;
time = aEvent->time;
touches.AppendElements(aEvent->touches);
MOZ_COUNT_CTOR(nsTouchEvent);
}
nsTouchEvent(bool isTrusted, uint32_t msg, nsIWidget* w)
: nsInputEvent(isTrusted, msg, w, NS_TOUCH_EVENT)
{
MOZ_COUNT_CTOR(nsTouchEvent);
}
~nsTouchEvent()
{
MOZ_COUNT_DTOR(nsTouchEvent);
}
nsTArray<nsCOMPtr<nsIDOMTouch> > touches;
};
/**
* Form event
*
* We hold the originating form control for form submit and reset events.
* originator is a weak pointer (does not hold a strong reference).
*/
class nsFormEvent : public nsEvent
{
public:
nsFormEvent(bool isTrusted, uint32_t msg)
: nsEvent(isTrusted, msg, NS_FORM_EVENT),
originator(nullptr)
{
}
nsIContent *originator;
};
/**
* Command event
*
* Custom commands for example from the operating system.
*/
class nsCommandEvent : public nsGUIEvent
{
public:
nsCommandEvent(bool isTrusted, nsIAtom* aEventType,
nsIAtom* aCommand, nsIWidget* w)
: nsGUIEvent(isTrusted, NS_USER_DEFINED_EVENT, w, NS_COMMAND_EVENT)
{
userType = aEventType;
command = aCommand;
}
nsCOMPtr<nsIAtom> command;
};
/**
* DOM UIEvent
*/
class nsUIEvent : public nsEvent
{
public:
nsUIEvent(bool isTrusted, uint32_t msg, int32_t d)
: nsEvent(isTrusted, msg, NS_UI_EVENT),
detail(d)
{
}
int32_t detail;
};
/**
* Simple gesture event
*/
class nsSimpleGestureEvent : public nsMouseEvent_base
{
public:
nsSimpleGestureEvent(bool isTrusted, uint32_t msg, nsIWidget* w,
uint32_t directionArg, double deltaArg)
: nsMouseEvent_base(isTrusted, msg, w, NS_SIMPLE_GESTURE_EVENT),
direction(directionArg), delta(deltaArg), clickCount(0)
{
}
nsSimpleGestureEvent(const nsSimpleGestureEvent& other)
: nsMouseEvent_base(other.mFlags.mIsTrusted,
other.message, other.widget, NS_SIMPLE_GESTURE_EVENT),
direction(other.direction), delta(other.delta), clickCount(0)
{
}
uint32_t direction; // See nsIDOMSimpleGestureEvent for values
double delta; // Delta for magnify and rotate events
uint32_t clickCount; // The number of taps for tap events
};
class nsTransitionEvent : public nsEvent
{
public:
nsTransitionEvent(bool isTrusted, uint32_t msg,
const nsString &propertyNameArg, float elapsedTimeArg)
: nsEvent(isTrusted, msg, NS_TRANSITION_EVENT),
propertyName(propertyNameArg), elapsedTime(elapsedTimeArg)
{
}
nsString propertyName;
float elapsedTime;
};
class nsAnimationEvent : public nsEvent
{
public:
nsAnimationEvent(bool isTrusted, uint32_t msg,
const nsString &animationNameArg, float elapsedTimeArg)
: nsEvent(isTrusted, msg, NS_ANIMATION_EVENT),
animationName(animationNameArg), elapsedTime(elapsedTimeArg)
{
}
nsString animationName;
float elapsedTime;
};
/**
* Native event pluginEvent for plugins.
*/
class nsPluginEvent : public nsGUIEvent
{
public:
nsPluginEvent(bool isTrusted, uint32_t msg, nsIWidget *w)
: nsGUIEvent(isTrusted, msg, w, NS_PLUGIN_EVENT),
retargetToFocusedDocument(false)
{
}
// If TRUE, this event needs to be retargeted to focused document.
// Otherwise, never retargeted.
// Defaults to false.
bool retargetToFocusedDocument;
};
/**
* Event status for D&D Event
*/
enum nsDragDropEventStatus {
/// The event is a enter
nsDragDropEventStatus_eDragEntered,
/// The event is exit
nsDragDropEventStatus_eDragExited,
/// The event is drop
nsDragDropEventStatus_eDrop
};
#define NS_IS_INPUT_EVENT(evnt) \
(((evnt)->eventStructType == NS_INPUT_EVENT) || \
((evnt)->eventStructType == NS_MOUSE_EVENT) || \
((evnt)->eventStructType == NS_KEY_EVENT) || \
((evnt)->eventStructType == NS_TEXT_EVENT) || \
((evnt)->eventStructType == NS_TOUCH_EVENT) || \
((evnt)->eventStructType == NS_DRAG_EVENT) || \
((evnt)->eventStructType == NS_MOUSE_SCROLL_EVENT) || \
((evnt)->eventStructType == NS_SIMPLE_GESTURE_EVENT))
#define NS_IS_MOUSE_EVENT(evnt) \
(((evnt)->message == NS_MOUSE_BUTTON_DOWN) || \
((evnt)->message == NS_MOUSE_BUTTON_UP) || \
((evnt)->message == NS_MOUSE_CLICK) || \
((evnt)->message == NS_MOUSE_DOUBLECLICK) || \
((evnt)->message == NS_MOUSE_ENTER) || \
((evnt)->message == NS_MOUSE_EXIT) || \
((evnt)->message == NS_MOUSE_ACTIVATE) || \
((evnt)->message == NS_MOUSE_ENTER_SYNTH) || \
((evnt)->message == NS_MOUSE_EXIT_SYNTH) || \
((evnt)->message == NS_MOUSE_MOZHITTEST) || \
((evnt)->message == NS_MOUSE_MOVE))
#define NS_IS_MOUSE_EVENT_STRUCT(evnt) \
((evnt)->eventStructType == NS_MOUSE_EVENT || \
(evnt)->eventStructType == NS_DRAG_EVENT)
#define NS_IS_MOUSE_LEFT_CLICK(evnt) \
((evnt)->eventStructType == NS_MOUSE_EVENT && \
(evnt)->message == NS_MOUSE_CLICK && \
static_cast<nsMouseEvent*>((evnt))->button == nsMouseEvent::eLeftButton)
#define NS_IS_CONTEXT_MENU_KEY(evnt) \
((evnt)->eventStructType == NS_MOUSE_EVENT && \
(evnt)->message == NS_CONTEXTMENU && \
static_cast<nsMouseEvent*>((evnt))->context == nsMouseEvent::eContextMenuKey)
#define NS_IS_DRAG_EVENT(evnt) \
(((evnt)->message == NS_DRAGDROP_ENTER) || \
((evnt)->message == NS_DRAGDROP_OVER) || \
((evnt)->message == NS_DRAGDROP_EXIT) || \
((evnt)->message == NS_DRAGDROP_DRAGDROP) || \
((evnt)->message == NS_DRAGDROP_GESTURE) || \
((evnt)->message == NS_DRAGDROP_DRAG) || \
((evnt)->message == NS_DRAGDROP_END) || \
((evnt)->message == NS_DRAGDROP_START) || \
((evnt)->message == NS_DRAGDROP_DROP) || \
((evnt)->message == NS_DRAGDROP_LEAVE_SYNTH))
#define NS_IS_KEY_EVENT(evnt) \
(((evnt)->message == NS_KEY_DOWN) || \
((evnt)->message == NS_KEY_PRESS) || \
((evnt)->message == NS_KEY_UP))
#define NS_IS_IME_EVENT(evnt) \
(((evnt)->message == NS_TEXT_TEXT) || \
((evnt)->message == NS_COMPOSITION_START) || \
((evnt)->message == NS_COMPOSITION_END) || \
((evnt)->message == NS_COMPOSITION_UPDATE))
#define NS_IS_ACTIVATION_EVENT(evnt) \
(((evnt)->message == NS_PLUGIN_ACTIVATE) || \
((evnt)->message == NS_PLUGIN_FOCUS))
#define NS_IS_QUERY_CONTENT_EVENT(evnt) \
((evnt)->eventStructType == NS_QUERY_CONTENT_EVENT)
#define NS_IS_SELECTION_EVENT(evnt) \
(((evnt)->message == NS_SELECTION_SET))
#define NS_IS_CONTENT_COMMAND_EVENT(evnt) \
((evnt)->eventStructType == NS_CONTENT_COMMAND_EVENT)
#define NS_IS_PLUGIN_EVENT(evnt) \
(((evnt)->message == NS_PLUGIN_INPUT_EVENT) || \
((evnt)->message == NS_PLUGIN_FOCUS_EVENT))
#define NS_IS_RETARGETED_PLUGIN_EVENT(evnt) \
(NS_IS_PLUGIN_EVENT(evnt) && \
(static_cast<nsPluginEvent*>(evnt)->retargetToFocusedDocument))
#define NS_IS_NON_RETARGETED_PLUGIN_EVENT(evnt) \
(NS_IS_PLUGIN_EVENT(evnt) && \
!(static_cast<nsPluginEvent*>(evnt)->retargetToFocusedDocument))
// Be aware the query content events and the selection events are a part of IME
// processing. So, you shouldn't use NS_IS_IME_EVENT macro directly in most
// cases, you should use NS_IS_IME_RELATED_EVENT instead.
#define NS_IS_IME_RELATED_EVENT(evnt) \
(NS_IS_IME_EVENT(evnt) || \
NS_IS_QUERY_CONTENT_EVENT(evnt) || \
NS_IS_SELECTION_EVENT(evnt))
/*
* Virtual key bindings for keyboard events.
* These come from nsIDOMKeyEvent.h, which is generated from MouseKeyEvent.idl.
* Really, it would be better if we phased out the NS_VK symbols altogether
* in favor of the DOM ones, but at least this way they'll be in sync.
*/
enum {
#define NS_DEFINE_VK(aDOMKeyName, aDOMKeyCode) NS_##aDOMKeyName = aDOMKeyCode
#include "nsVKList.h"
#undef NS_DEFINE_VK
};
// IME Constants -- keep in synch with nsIPrivateTextRange.h
#define NS_TEXTRANGE_CARETPOSITION 0x01
#define NS_TEXTRANGE_RAWINPUT 0x02
#define NS_TEXTRANGE_SELECTEDRAWTEXT 0x03
#define NS_TEXTRANGE_CONVERTEDTEXT 0x04
#define NS_TEXTRANGE_SELECTEDCONVERTEDTEXT 0x05
/**
* 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.
*/
inline bool NS_IsEventUsingCoordinates(nsEvent* aEvent)
{
return !NS_IS_KEY_EVENT(aEvent) && !NS_IS_IME_RELATED_EVENT(aEvent) &&
!NS_IS_CONTEXT_MENU_KEY(aEvent) && !NS_IS_ACTIVATION_EVENT(aEvent) &&
!NS_IS_PLUGIN_EVENT(aEvent) &&
!NS_IS_CONTENT_COMMAND_EVENT(aEvent) &&
aEvent->message != NS_PLUGIN_RESOLUTION_CHANGED;
}
/**
* 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.
*/
inline bool NS_IsEventTargetedAtFocusedWindow(nsEvent* aEvent)
{
return NS_IS_KEY_EVENT(aEvent) || NS_IS_IME_RELATED_EVENT(aEvent) ||
NS_IS_CONTEXT_MENU_KEY(aEvent) ||
NS_IS_CONTENT_COMMAND_EVENT(aEvent) ||
NS_IS_RETARGETED_PLUGIN_EVENT(aEvent);
}
/**
* 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.
*/
inline bool NS_IsEventTargetedAtFocusedContent(nsEvent* aEvent)
{
return NS_IS_KEY_EVENT(aEvent) || NS_IS_IME_RELATED_EVENT(aEvent) ||
NS_IS_CONTEXT_MENU_KEY(aEvent) ||
NS_IS_RETARGETED_PLUGIN_EVENT(aEvent);
}
/**
* Whether the event should cause a DOM event.
*/
inline bool NS_IsAllowedToDispatchDOMEvent(nsEvent* aEvent)
{
switch (aEvent->eventStructType) {
case NS_MOUSE_EVENT:
// We want synthesized mouse moves to cause mouseover and mouseout
// DOM events (nsEventStateManager::PreHandleEvent), but not mousemove
// DOM events.
// Synthesized button up events also do not cause DOM events because they
// do not have a reliable refPoint.
return static_cast<nsMouseEvent*>(aEvent)->reason == nsMouseEvent::eReal;
case NS_WHEEL_EVENT: {
// wheel event whose all delta values are zero by user pref applied, it
// shouldn't cause a DOM event.
mozilla::widget::WheelEvent* wheelEvent =
static_cast<mozilla::widget::WheelEvent*>(aEvent);
return wheelEvent->deltaX != 0.0 || wheelEvent->deltaY != 0.0 ||
wheelEvent->deltaZ != 0.0;
}
default:
return true;
}
}
#endif // nsGUIEvent_h__
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