Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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
#ifndef mozilla_EventForwards_h__
#define mozilla_EventForwards_h__
#include <stdint.h>
#include "nsStringFwd.h"
#include "nsTArray.h"
#ifdef DEBUG
# include "mozilla/StaticPrefs_dom.h"
#endif // #ifdef DEBUG
class nsCommandParams;
/**
* XXX Following enums should be in BasicEvents.h. However, currently, it's
* impossible to use foward delearation for enum.
*/
/**
* Return status for event processors.
*/
enum nsEventStatus {
// The event is ignored, do default processing
nsEventStatus_eIgnore,
// The event is consumed, don't do default processing
nsEventStatus_eConsumeNoDefault,
// The event is consumed, but do default processing
nsEventStatus_eConsumeDoDefault,
// Value is not for use, only for serialization
nsEventStatus_eSentinel
};
namespace mozilla {
enum class CanBubble { eYes, eNo };
enum class Cancelable { eYes, eNo };
enum class ChromeOnlyDispatch { eYes, eNo };
enum class Trusted { eYes, eNo };
enum class Composed { eYes, eNo, eDefault };
/**
* Event messages
*/
typedef uint16_t EventMessageType;
enum EventMessage : EventMessageType {
#define NS_EVENT_MESSAGE(aMessage) aMessage,
#define NS_EVENT_MESSAGE_FIRST_LAST(aMessage, aFirst, aLast) \
aMessage##First = aFirst, aMessage##Last = aLast,
#include "mozilla/EventMessageList.h"
#undef NS_EVENT_MESSAGE
#undef NS_EVENT_MESSAGE_FIRST_LAST
// For preventing bustage due to "," after the last item.
eEventMessage_MaxValue
};
const char* ToChar(EventMessage aEventMessage);
/**
* Event class IDs
*/
typedef uint8_t EventClassIDType;
enum EventClassID : EventClassIDType {
// The event class name will be:
// eBasicEventClass for WidgetEvent
// eFooEventClass for WidgetFooEvent or InternalFooEvent
#define NS_ROOT_EVENT_CLASS(aPrefix, aName) eBasic##aName##Class
#define NS_EVENT_CLASS(aPrefix, aName) , e##aName##Class
#include "mozilla/EventClassList.h"
#undef NS_EVENT_CLASS
#undef NS_ROOT_EVENT_CLASS
};
const char* ToChar(EventClassID aEventClassID);
typedef uint16_t Modifiers;
#define NS_DEFINE_KEYNAME(aCPPName, aDOMKeyName) KEY_NAME_INDEX_##aCPPName,
typedef uint16_t KeyNameIndexType;
enum KeyNameIndex : KeyNameIndexType {
#include "mozilla/KeyNameList.h"
// If a DOM keyboard event is synthesized by script, this is used. Then,
// specified key name should be stored and use it as .key value.
KEY_NAME_INDEX_USE_STRING
};
#undef NS_DEFINE_KEYNAME
const nsCString ToString(KeyNameIndex aKeyNameIndex);
#define NS_DEFINE_PHYSICAL_KEY_CODE_NAME(aCPPName, aDOMCodeName) \
CODE_NAME_INDEX_##aCPPName,
typedef uint8_t CodeNameIndexType;
enum CodeNameIndex : CodeNameIndexType {
#include "mozilla/PhysicalKeyCodeNameList.h"
// If a DOM keyboard event is synthesized by script, this is used. Then,
// specified code name should be stored and use it as .code value.
CODE_NAME_INDEX_USE_STRING
};
#undef NS_DEFINE_PHYSICAL_KEY_CODE_NAME
const nsCString ToString(CodeNameIndex aCodeNameIndex);
#define NS_DEFINE_INPUTTYPE(aCPPName, aDOMName) e##aCPPName,
typedef uint8_t EditorInputTypeType;
enum class EditorInputType : EditorInputTypeType {
#include "mozilla/InputTypeList.h"
// If a DOM input event is synthesized by script, this is used. Then,
// specified input type should be stored as string and use it as .inputType
// value.
eUnknown,
};
#undef NS_DEFINE_INPUTTYPE
inline bool ExposesClipboardDataOrDataTransfer(EditorInputType aInputType) {
switch (aInputType) {
case EditorInputType::eInsertFromPaste:
case EditorInputType::eInsertFromPasteAsQuotation:
return true;
default:
return false;
}
}
/**
* IsDataAvailableOnTextEditor() returns true if aInputType on TextEditor
* should have non-null InputEvent.data value.
*/
inline bool IsDataAvailableOnTextEditor(EditorInputType aInputType) {
switch (aInputType) {
case EditorInputType::eInsertText:
case EditorInputType::eInsertCompositionText:
case EditorInputType::eInsertFromComposition: // Only level 2
case EditorInputType::eInsertFromPaste:
case EditorInputType::eInsertFromPasteAsQuotation:
case EditorInputType::eInsertTranspose:
case EditorInputType::eInsertFromDrop:
case EditorInputType::eInsertReplacementText:
case EditorInputType::eInsertFromYank:
case EditorInputType::eFormatSetBlockTextDirection:
case EditorInputType::eFormatSetInlineTextDirection:
return true;
default:
return false;
}
}
/**
* IsDataAvailableOnHTMLEditor() returns true if aInputType on HTMLEditor
* should have non-null InputEvent.data value.
*/
inline bool IsDataAvailableOnHTMLEditor(EditorInputType aInputType) {
switch (aInputType) {
case EditorInputType::eInsertText:
case EditorInputType::eInsertCompositionText:
case EditorInputType::eInsertFromComposition: // Only level 2
case EditorInputType::eFormatSetBlockTextDirection:
case EditorInputType::eFormatSetInlineTextDirection:
case EditorInputType::eInsertLink:
case EditorInputType::eFormatBackColor:
case EditorInputType::eFormatFontColor:
case EditorInputType::eFormatFontName:
return true;
default:
return false;
}
}
/**
* IsDataTransferAvailableOnHTMLEditor() returns true if aInputType on
* HTMLEditor should have non-null InputEvent.dataTransfer value.
*/
inline bool IsDataTransferAvailableOnHTMLEditor(EditorInputType aInputType) {
switch (aInputType) {
case EditorInputType::eInsertFromPaste:
case EditorInputType::eInsertFromPasteAsQuotation:
case EditorInputType::eInsertFromDrop:
case EditorInputType::eInsertTranspose:
case EditorInputType::eInsertReplacementText:
case EditorInputType::eInsertFromYank:
return true;
default:
return false;
}
}
/**
* MayHaveTargetRangesOnHTMLEditor() returns true if "beforeinput" event whose
* whose inputType is aInputType on HTMLEditor may return non-empty static
* range array from getTargetRanges().
* Note that TextEditor always sets empty array. Therefore, there is no
* method for TextEditor.
*/
inline bool MayHaveTargetRangesOnHTMLEditor(EditorInputType aInputType) {
switch (aInputType) {
// Explicitly documented by the specs.
case EditorInputType::eHistoryRedo:
case EditorInputType::eHistoryUndo:
// Not documented, but other browsers use empty array.
case EditorInputType::eFormatSetBlockTextDirection:
return false;
default:
return true;
}
}
/**
* IsCancelableBeforeInputEvent() returns true if `beforeinput` event for
* aInputType should be cancelable.
*
* Input Events Level 1:
* Input Events Level 2:
*/
inline bool IsCancelableBeforeInputEvent(EditorInputType aInputType) {
switch (aInputType) {
case EditorInputType::eInsertText:
return true; // In Level 1, undefined.
case EditorInputType::eInsertReplacementText:
return true; // In Level 1, undefined.
case EditorInputType::eInsertLineBreak:
return true; // In Level 1, undefined.
case EditorInputType::eInsertParagraph:
return true; // In Level 1, undefined.
case EditorInputType::eInsertOrderedList:
return true;
case EditorInputType::eInsertUnorderedList:
return true;
case EditorInputType::eInsertHorizontalRule:
return true;
case EditorInputType::eInsertFromYank:
return true;
case EditorInputType::eInsertFromDrop:
return true;
case EditorInputType::eInsertFromPaste:
return true;
case EditorInputType::eInsertFromPasteAsQuotation:
return true;
case EditorInputType::eInsertTranspose:
return true;
case EditorInputType::eInsertCompositionText:
return false;
case EditorInputType::eInsertFromComposition:
MOZ_ASSERT(!StaticPrefs::dom_input_events_conform_to_level_1());
return true;
case EditorInputType::eInsertLink:
return true;
case EditorInputType::eDeleteCompositionText:
MOZ_ASSERT(!StaticPrefs::dom_input_events_conform_to_level_1());
return false;
case EditorInputType::eDeleteWordBackward:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteWordForward:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteSoftLineBackward:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteSoftLineForward:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteEntireSoftLine:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteHardLineBackward:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteHardLineForward:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteByDrag:
return true;
case EditorInputType::eDeleteByCut:
return true;
case EditorInputType::eDeleteContent:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteContentBackward:
return true; // In Level 1, undefined.
case EditorInputType::eDeleteContentForward:
return true; // In Level 1, undefined.
case EditorInputType::eHistoryUndo:
return true;
case EditorInputType::eHistoryRedo:
return true;
case EditorInputType::eFormatBold:
return true;
case EditorInputType::eFormatItalic:
return true;
case EditorInputType::eFormatUnderline:
return true;
case EditorInputType::eFormatStrikeThrough:
return true;
case EditorInputType::eFormatSuperscript:
return true;
case EditorInputType::eFormatSubscript:
return true;
case EditorInputType::eFormatJustifyFull:
return true;
case EditorInputType::eFormatJustifyCenter:
return true;
case EditorInputType::eFormatJustifyRight:
return true;
case EditorInputType::eFormatJustifyLeft:
return true;
case EditorInputType::eFormatIndent:
return true;
case EditorInputType::eFormatOutdent:
return true;
case EditorInputType::eFormatRemove:
return true;
case EditorInputType::eFormatSetBlockTextDirection:
return true;
case EditorInputType::eFormatSetInlineTextDirection:
return true;
case EditorInputType::eFormatBackColor:
return true;
case EditorInputType::eFormatFontColor:
return true;
case EditorInputType::eFormatFontName:
return true;
case EditorInputType::eUnknown:
// This is not declared by Input Events, but it does not make sense to
// allow web apps to cancel default action without inputType value check.
// If some our specific edit actions should be cancelable, new inputType
// value for them should be declared by the spec.
return false;
default:
MOZ_ASSERT_UNREACHABLE("The new input type is not handled");
return false;
}
}
#define NS_DEFINE_COMMAND(aName, aCommandStr) , aName
#define NS_DEFINE_COMMAND_WITH_PARAM(aName, aCommandStr, aParam) , aName
#define NS_DEFINE_COMMAND_NO_EXEC_COMMAND(aName) , aName
typedef uint8_t CommandInt;
enum class Command : CommandInt {
DoNothing
#include "mozilla/CommandList.h"
};
#undef NS_DEFINE_COMMAND
#undef NS_DEFINE_COMMAND_WITH_PARAM
#undef NS_DEFINE_COMMAND_NO_EXEC_COMMAND
const char* ToChar(Command aCommand);
/**
* Return a command value for aCommandName.
* XXX: Is there a better place to put `Command` related methods instead of
* global scope in `mozilla` namespace?
*
* @param aCommandName Should be a XUL command name like "cmd_bold"
* (case sensitive).
* @param aCommandparams Additional parameter value of aCommandName.
* Can be nullptr, but if aCommandName requires
* additional parameter and sets this to nullptr,
* will return Command::DoNothing with warning.
*/
Command GetInternalCommand(const char* aCommandName,
const nsCommandParams* aCommandParams = nullptr);
} // namespace mozilla
/**
* All header files should include this header instead of *Events.h.
*/
namespace mozilla {
template <class T>
class OwningNonNull;
namespace dom {
class StaticRange;
}
#define NS_EVENT_CLASS(aPrefix, aName) class aPrefix##aName;
#define NS_ROOT_EVENT_CLASS(aPrefix, aName) NS_EVENT_CLASS(aPrefix, aName)
#include "mozilla/EventClassList.h"
#undef NS_EVENT_CLASS
#undef NS_ROOT_EVENT_CLASS
// BasicEvents.h
struct BaseEventFlags;
struct EventFlags;
class WidgetEventTime;
// TextEvents.h
enum class AccessKeyType;
struct AlternativeCharCode;
struct ShortcutKeyCandidate;
typedef nsTArray<ShortcutKeyCandidate> ShortcutKeyCandidateArray;
typedef AutoTArray<ShortcutKeyCandidate, 10> AutoShortcutKeyCandidateArray;
// TextRange.h
typedef uint8_t RawTextRangeType;
enum class TextRangeType : RawTextRangeType;
struct TextRangeStyle;
struct TextRange;
class EditCommands;
class TextRangeArray;
typedef nsTArray<OwningNonNull<dom::StaticRange>> OwningNonNullStaticRangeArray;
// FontRange.h
struct FontRange;
enum MouseButton : int16_t {
eNotPressed = -1,
ePrimary = 0,
eMiddle = 1,
eSecondary = 2,
eX1 = 3, // Typically, "back" button
eX2 = 4, // Typically, "forward" button
eEraser = 5
};
enum MouseButtonsFlag {
eNoButtons = 0x00,
ePrimaryFlag = 0x01,
eSecondaryFlag = 0x02,
eMiddleFlag = 0x04,
// typicall, "back" button being left side of 5-button
// mice, see "buttons" attribute document of DOM3 Events.
e4thFlag = 0x08,
// typicall, "forward" button being right side of 5-button
// mice, see "buttons" attribute document of DOM3 Events.
e5thFlag = 0x10,
eEraserFlag = 0x20
};
/**
* Returns a MouseButtonsFlag value which is changed by a button state change
* event whose mButton is aMouseButton.
*/
inline MouseButtonsFlag MouseButtonsFlagToChange(MouseButton aMouseButton) {
switch (aMouseButton) {
case MouseButton::ePrimary:
return MouseButtonsFlag::ePrimaryFlag;
case MouseButton::eMiddle:
return MouseButtonsFlag::eMiddleFlag;
case MouseButton::eSecondary:
return MouseButtonsFlag::eSecondaryFlag;
case MouseButton::eX1:
return MouseButtonsFlag::e4thFlag;
case MouseButton::eX2:
return MouseButtonsFlag::e5thFlag;
case MouseButton::eEraser:
return MouseButtonsFlag::eEraserFlag;
default:
return MouseButtonsFlag::eNoButtons;
}
}
enum class TextRangeType : RawTextRangeType;
// IMEData.h
template <typename IntType>
class StartAndEndOffsets;
template <typename IntType>
class OffsetAndData;
} // namespace mozilla
#endif // mozilla_EventForwards_h__