зеркало из https://github.com/mozilla/gecko-dev.git
1261 строка
47 KiB
C++
1261 строка
47 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_TextEvents_h__
|
|
#define mozilla_TextEvents_h__
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/BasicEvents.h"
|
|
#include "mozilla/CheckedInt.h"
|
|
#include "mozilla/dom/DataTransfer.h"
|
|
#include "mozilla/EventForwards.h" // for KeyNameIndex, temporarily
|
|
#include "mozilla/FontRange.h"
|
|
#include "mozilla/Maybe.h"
|
|
#include "mozilla/TextRange.h"
|
|
#include "mozilla/WritingModes.h"
|
|
#include "mozilla/dom/KeyboardEventBinding.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsISelectionListener.h"
|
|
#include "nsITransferable.h"
|
|
#include "nsRect.h"
|
|
#include "nsString.h"
|
|
#include "nsTArray.h"
|
|
|
|
class nsStringHashKey;
|
|
template <class, class>
|
|
class nsDataHashtable;
|
|
|
|
/******************************************************************************
|
|
* virtual keycode values
|
|
******************************************************************************/
|
|
|
|
enum {
|
|
#define NS_DEFINE_VK(aDOMKeyName, aDOMKeyCode) NS_##aDOMKeyName = aDOMKeyCode,
|
|
#include "mozilla/VirtualKeyCodeList.h"
|
|
#undef NS_DEFINE_VK
|
|
NS_VK_UNKNOWN = 0xFF
|
|
};
|
|
|
|
namespace mozilla {
|
|
|
|
enum : uint32_t {
|
|
eKeyLocationStandard = dom::KeyboardEvent_Binding::DOM_KEY_LOCATION_STANDARD,
|
|
eKeyLocationLeft = dom::KeyboardEvent_Binding::DOM_KEY_LOCATION_LEFT,
|
|
eKeyLocationRight = dom::KeyboardEvent_Binding::DOM_KEY_LOCATION_RIGHT,
|
|
eKeyLocationNumpad = dom::KeyboardEvent_Binding::DOM_KEY_LOCATION_NUMPAD
|
|
};
|
|
|
|
const nsCString GetDOMKeyCodeName(uint32_t aKeyCode);
|
|
|
|
namespace dom {
|
|
class PBrowserParent;
|
|
class PBrowserChild;
|
|
} // namespace dom
|
|
namespace plugins {
|
|
class PPluginInstanceChild;
|
|
} // namespace plugins
|
|
|
|
enum class AccessKeyType {
|
|
// Handle access key for chrome.
|
|
eChrome,
|
|
// Handle access key for content.
|
|
eContent,
|
|
// Don't handle access key.
|
|
eNone
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::AlternativeCharCode
|
|
*
|
|
* This stores alternative charCode values of a key event with some modifiers.
|
|
* The stored values proper for testing shortcut key or access key.
|
|
******************************************************************************/
|
|
|
|
struct AlternativeCharCode {
|
|
AlternativeCharCode() : mUnshiftedCharCode(0), mShiftedCharCode(0) {}
|
|
AlternativeCharCode(uint32_t aUnshiftedCharCode, uint32_t aShiftedCharCode)
|
|
: mUnshiftedCharCode(aUnshiftedCharCode),
|
|
mShiftedCharCode(aShiftedCharCode) {}
|
|
uint32_t mUnshiftedCharCode;
|
|
uint32_t mShiftedCharCode;
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::ShortcutKeyCandidate
|
|
*
|
|
* This stores a candidate of shortcut key combination.
|
|
******************************************************************************/
|
|
|
|
struct ShortcutKeyCandidate {
|
|
ShortcutKeyCandidate() : mCharCode(0), mIgnoreShift(0) {}
|
|
ShortcutKeyCandidate(uint32_t aCharCode, bool aIgnoreShift)
|
|
: mCharCode(aCharCode), mIgnoreShift(aIgnoreShift) {}
|
|
// The mCharCode value which must match keyboard shortcut definition.
|
|
uint32_t mCharCode;
|
|
// true if Shift state can be ignored. Otherwise, Shift key state must
|
|
// match keyboard shortcut definition.
|
|
bool mIgnoreShift;
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::IgnoreModifierState
|
|
*
|
|
* This stores flags for modifiers that should be ignored when matching
|
|
* XBL handlers.
|
|
******************************************************************************/
|
|
|
|
struct IgnoreModifierState {
|
|
// When mShift is true, Shift key state will be ignored.
|
|
bool mShift;
|
|
// When mOS is true, OS key state will be ignored.
|
|
bool mOS;
|
|
|
|
IgnoreModifierState() : mShift(false), mOS(false) {}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetKeyboardEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetKeyboardEvent : public WidgetInputEvent {
|
|
private:
|
|
friend class dom::PBrowserParent;
|
|
friend class dom::PBrowserChild;
|
|
friend struct IPC::ParamTraits<WidgetKeyboardEvent>;
|
|
|
|
protected:
|
|
WidgetKeyboardEvent()
|
|
: mNativeKeyEvent(nullptr),
|
|
mKeyCode(0),
|
|
mCharCode(0),
|
|
mPseudoCharCode(0),
|
|
mLocation(eKeyLocationStandard),
|
|
mUniqueId(0)
|
|
#ifdef XP_MACOSX
|
|
,
|
|
mNativeModifierFlags(0),
|
|
mNativeKeyCode(0)
|
|
#endif // #ifdef XP_MACOSX
|
|
,
|
|
mKeyNameIndex(KEY_NAME_INDEX_Unidentified),
|
|
mCodeNameIndex(CODE_NAME_INDEX_UNKNOWN),
|
|
mIsRepeat(false),
|
|
mIsComposing(false),
|
|
mIsSynthesizedByTIP(false),
|
|
mMaybeSkippableInRemoteProcess(true),
|
|
mUseLegacyKeyCodeAndCharCodeValues(false),
|
|
mEditCommandsForSingleLineEditorInitialized(false),
|
|
mEditCommandsForMultiLineEditorInitialized(false),
|
|
mEditCommandsForRichTextEditorInitialized(false) {
|
|
}
|
|
|
|
public:
|
|
virtual WidgetKeyboardEvent* AsKeyboardEvent() override { return this; }
|
|
|
|
WidgetKeyboardEvent(bool aIsTrusted, EventMessage aMessage,
|
|
nsIWidget* aWidget,
|
|
EventClassID aEventClassID = eKeyboardEventClass)
|
|
: WidgetInputEvent(aIsTrusted, aMessage, aWidget, aEventClassID),
|
|
mNativeKeyEvent(nullptr),
|
|
mKeyCode(0),
|
|
mCharCode(0),
|
|
mPseudoCharCode(0),
|
|
mLocation(eKeyLocationStandard),
|
|
mUniqueId(0)
|
|
#ifdef XP_MACOSX
|
|
,
|
|
mNativeModifierFlags(0),
|
|
mNativeKeyCode(0)
|
|
#endif // #ifdef XP_MACOSX
|
|
,
|
|
mKeyNameIndex(KEY_NAME_INDEX_Unidentified),
|
|
mCodeNameIndex(CODE_NAME_INDEX_UNKNOWN),
|
|
mIsRepeat(false),
|
|
mIsComposing(false),
|
|
mIsSynthesizedByTIP(false),
|
|
mMaybeSkippableInRemoteProcess(true),
|
|
mUseLegacyKeyCodeAndCharCodeValues(false),
|
|
mEditCommandsForSingleLineEditorInitialized(false),
|
|
mEditCommandsForMultiLineEditorInitialized(false),
|
|
mEditCommandsForRichTextEditorInitialized(false) {
|
|
// If this is a keyboard event on a plugin, it shouldn't fired on content.
|
|
if (IsKeyEventOnPlugin()) {
|
|
mFlags.mOnlySystemGroupDispatchInContent = true;
|
|
StopCrossProcessForwarding();
|
|
}
|
|
}
|
|
|
|
static bool IsKeyDownOrKeyDownOnPlugin(EventMessage aMessage) {
|
|
return aMessage == eKeyDown || aMessage == eKeyDownOnPlugin;
|
|
}
|
|
bool IsKeyDownOrKeyDownOnPlugin() const {
|
|
return IsKeyDownOrKeyDownOnPlugin(mMessage);
|
|
}
|
|
static bool IsKeyUpOrKeyUpOnPlugin(EventMessage aMessage) {
|
|
return aMessage == eKeyUp || aMessage == eKeyUpOnPlugin;
|
|
}
|
|
bool IsKeyUpOrKeyUpOnPlugin() const {
|
|
return IsKeyUpOrKeyUpOnPlugin(mMessage);
|
|
}
|
|
static bool IsKeyEventOnPlugin(EventMessage aMessage) {
|
|
return aMessage == eKeyDownOnPlugin || aMessage == eKeyUpOnPlugin;
|
|
}
|
|
bool IsKeyEventOnPlugin() const { return IsKeyEventOnPlugin(mMessage); }
|
|
|
|
// IsInputtingText() and IsInputtingLineBreak() are used to check if
|
|
// it should cause eKeyPress events even on web content.
|
|
// UI Events defines that "keypress" event should be fired "if and only if
|
|
// that key normally produces a character value".
|
|
// <https://www.w3.org/TR/uievents/#event-type-keypress>
|
|
// Additionally, for backward compatiblity with all existing browsers,
|
|
// there is a spec issue for Enter key press.
|
|
// <https://github.com/w3c/uievents/issues/183>
|
|
bool IsInputtingText() const {
|
|
// NOTE: On some keyboard layout, some characters are inputted with Control
|
|
// key or Alt key, but at that time, widget clears the modifier flag
|
|
// from eKeyPress event because our TextEditor won't handle eKeyPress
|
|
// events as inputting text (bug 1346832).
|
|
// NOTE: There are some complicated issues of our traditional behavior.
|
|
// -- On Windows, KeyboardLayout::WillDispatchKeyboardEvent() clears
|
|
// MODIFIER_ALT and MODIFIER_CONTROL of eKeyPress event if it
|
|
// should be treated as inputting a character because AltGr is
|
|
// represented with both Alt key and Ctrl key are pressed, and
|
|
// some keyboard layouts may produces a character with Ctrl key.
|
|
// -- On Linux, KeymapWrapper doesn't have this hack since perhaps,
|
|
// we don't have any bug reports that user cannot input proper
|
|
// character with Alt and/or Ctrl key.
|
|
// -- On macOS, IMEInputHandler::WillDispatchKeyboardEvent() clears
|
|
// MODIFIER_ALT and MDOFIEIR_CONTROL of eKeyPress event only when
|
|
// TextInputHandler::InsertText() has been called for the event.
|
|
// I.e., they are cleared only when an editor has focus (even if IME
|
|
// is disabled in password field or by |ime-mode: disabled;|) because
|
|
// TextInputHandler::InsertText() is called while
|
|
// TextInputHandler::HandleKeyDownEvent() calls interpretKeyEvents:
|
|
// to notify text input processor of Cocoa (including IME). In other
|
|
// words, when we need to disable IME completey when no editor has
|
|
// focus, we cannot call interpretKeyEvents:. So,
|
|
// TextInputHandler::InsertText() won't be called when no editor has
|
|
// focus so that neither MODIFIER_ALT nor MODIFIER_CONTROL is
|
|
// cleared. So, fortunately, altKey and ctrlKey values of "keypress"
|
|
// events are same as the other browsers only when no editor has
|
|
// focus.
|
|
// NOTE: As mentioned above, for compatibility with the other browsers on
|
|
// macOS, we should keep MODIFIER_ALT and MODIFIER_CONTROL flags of
|
|
// eKeyPress events when no editor has focus. However, Alt key,
|
|
// labeled "option" on keyboard for Mac, is AltGraph key on the other
|
|
// platforms. So, even if MODIFIER_ALT is set, we need to dispatch
|
|
// eKeyPress event even on web content unless mCharCode is 0.
|
|
// Therefore, we need to ignore MODIFIER_ALT flag here only on macOS.
|
|
return mMessage == eKeyPress && mCharCode &&
|
|
!(mModifiers & (
|
|
#ifndef XP_MACOSX
|
|
// So, ignore MODIFIER_ALT only on macOS since
|
|
// option key is used as AltGraph key on macOS.
|
|
MODIFIER_ALT |
|
|
#endif // #ifndef XP_MAXOSX
|
|
MODIFIER_CONTROL | MODIFIER_META | MODIFIER_OS));
|
|
}
|
|
|
|
bool IsInputtingLineBreak() const {
|
|
return mMessage == eKeyPress && mKeyNameIndex == KEY_NAME_INDEX_Enter &&
|
|
!(mModifiers &
|
|
(MODIFIER_ALT | MODIFIER_CONTROL | MODIFIER_META | MODIFIER_OS));
|
|
}
|
|
|
|
/**
|
|
* ShouldKeyPressEventBeFiredOnContent() should be called only when the
|
|
* instance is eKeyPress event. This returns true when the eKeyPress
|
|
* event should be fired even on content in the default event group.
|
|
*/
|
|
bool ShouldKeyPressEventBeFiredOnContent() const {
|
|
MOZ_DIAGNOSTIC_ASSERT(mMessage == eKeyPress);
|
|
if (IsInputtingText() || IsInputtingLineBreak()) {
|
|
return true;
|
|
}
|
|
// Ctrl + Enter won't cause actual input in our editor.
|
|
// However, the other browsers fire keypress event in any platforms.
|
|
// So, for compatibility with them, we should fire keypress event for
|
|
// Ctrl + Enter too.
|
|
return mMessage == eKeyPress && mKeyNameIndex == KEY_NAME_INDEX_Enter &&
|
|
!(mModifiers &
|
|
(MODIFIER_ALT | MODIFIER_META | MODIFIER_OS | MODIFIER_SHIFT));
|
|
}
|
|
|
|
virtual WidgetEvent* Duplicate() const override {
|
|
MOZ_ASSERT(mClass == eKeyboardEventClass,
|
|
"Duplicate() must be overridden by sub class");
|
|
// Not copying widget, it is a weak reference.
|
|
WidgetKeyboardEvent* result =
|
|
new WidgetKeyboardEvent(false, mMessage, nullptr);
|
|
result->AssignKeyEventData(*this, true);
|
|
result->mEditCommandsForSingleLineEditor = mEditCommandsForSingleLineEditor;
|
|
result->mEditCommandsForMultiLineEditor = mEditCommandsForMultiLineEditor;
|
|
result->mEditCommandsForRichTextEditor = mEditCommandsForRichTextEditor;
|
|
result->mFlags = mFlags;
|
|
return result;
|
|
}
|
|
|
|
bool CanUserGestureActivateTarget() const {
|
|
// Printable keys, 'carriage return' and 'space' are supported user gestures
|
|
// for activating the document. However, if supported key is being pressed
|
|
// combining with other operation keys, such like alt, control ..etc., we
|
|
// won't activate the target for them because at that time user might
|
|
// interact with browser or window manager which doesn't necessarily
|
|
// demonstrate user's intent to play media.
|
|
const bool isCombiningWithOperationKeys = (IsControl() && !IsAltGraph()) ||
|
|
(IsAlt() && !IsAltGraph()) ||
|
|
IsMeta() || IsOS();
|
|
const bool isEnterOrSpaceKey =
|
|
mKeyNameIndex == KEY_NAME_INDEX_Enter || mKeyCode == NS_VK_SPACE;
|
|
return (PseudoCharCode() || isEnterOrSpaceKey) &&
|
|
!isCombiningWithOperationKeys;
|
|
}
|
|
|
|
/**
|
|
* CanTreatAsUserInput() returns true if the key is pressed for perhaps
|
|
* doing something on the web app or our UI. This means that when this
|
|
* returns false, e.g., when user presses a modifier key, user is probably
|
|
* displeased by opening popup, entering fullscreen mode, etc. Therefore,
|
|
* only when this returns true, such reactions should be allowed.
|
|
*/
|
|
bool CanTreatAsUserInput() const {
|
|
if (!IsTrusted()) {
|
|
return false;
|
|
}
|
|
switch (mKeyNameIndex) {
|
|
case KEY_NAME_INDEX_Escape:
|
|
// modifier keys:
|
|
case KEY_NAME_INDEX_Alt:
|
|
case KEY_NAME_INDEX_AltGraph:
|
|
case KEY_NAME_INDEX_CapsLock:
|
|
case KEY_NAME_INDEX_Control:
|
|
case KEY_NAME_INDEX_Fn:
|
|
case KEY_NAME_INDEX_FnLock:
|
|
case KEY_NAME_INDEX_Meta:
|
|
case KEY_NAME_INDEX_NumLock:
|
|
case KEY_NAME_INDEX_ScrollLock:
|
|
case KEY_NAME_INDEX_Shift:
|
|
case KEY_NAME_INDEX_Symbol:
|
|
case KEY_NAME_INDEX_SymbolLock:
|
|
// legacy modifier keys:
|
|
case KEY_NAME_INDEX_Hyper:
|
|
case KEY_NAME_INDEX_Super:
|
|
// obsolete modifier key:
|
|
case KEY_NAME_INDEX_OS:
|
|
return false;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ShouldInteractionTimeRecorded() returns true if the handling time of
|
|
* the event should be recorded with the telemetry.
|
|
*/
|
|
bool ShouldInteractionTimeRecorded() const {
|
|
// Let's record only when we can treat the instance is a user input.
|
|
return CanTreatAsUserInput();
|
|
}
|
|
|
|
// OS translated Unicode chars which are used for accesskey and accelkey
|
|
// handling. The handlers will try from first character to last character.
|
|
nsTArray<AlternativeCharCode> mAlternativeCharCodes;
|
|
// DOM KeyboardEvent.key only when mKeyNameIndex is KEY_NAME_INDEX_USE_STRING.
|
|
nsString mKeyValue;
|
|
// DOM KeyboardEvent.code only when mCodeNameIndex is
|
|
// CODE_NAME_INDEX_USE_STRING.
|
|
nsString mCodeValue;
|
|
|
|
#ifdef XP_MACOSX
|
|
// Values given by a native NSEvent, for use with Cocoa NPAPI plugins.
|
|
nsString mNativeCharacters;
|
|
nsString mNativeCharactersIgnoringModifiers;
|
|
// If this is non-empty, create a text event for plugins instead of a
|
|
// keyboard event.
|
|
nsString mPluginTextEventString;
|
|
#endif // #ifdef XP_MACOSX
|
|
|
|
// OS-specific native event can optionally be preserved
|
|
void* mNativeKeyEvent;
|
|
// A DOM keyCode value or 0. If a keypress event whose mCharCode is 0, this
|
|
// should be 0.
|
|
uint32_t mKeyCode;
|
|
// If the instance is a keypress event of a printable key, this is a UTF-16
|
|
// value of the key. Otherwise, 0. This value must not be a control
|
|
// character when some modifiers are active. Then, this value should be an
|
|
// unmodified value except Shift and AltGr.
|
|
uint32_t mCharCode;
|
|
// mPseudoCharCode is valid only when mMessage is an eKeyDown event.
|
|
// This stores mCharCode value of keypress event which is fired with same
|
|
// key value and same modifier state.
|
|
uint32_t mPseudoCharCode;
|
|
// One of eKeyLocation*
|
|
uint32_t mLocation;
|
|
// Unique id associated with a keydown / keypress event. It's ok if this wraps
|
|
// over long periods.
|
|
uint32_t mUniqueId;
|
|
|
|
#ifdef XP_MACOSX
|
|
// Values given by a native NSEvent, for use with Cocoa NPAPI plugins.
|
|
uint32_t mNativeModifierFlags;
|
|
uint16_t mNativeKeyCode;
|
|
#endif // #ifdef XP_MACOSX
|
|
|
|
// DOM KeyboardEvent.key
|
|
KeyNameIndex mKeyNameIndex;
|
|
// DOM KeyboardEvent.code
|
|
CodeNameIndex mCodeNameIndex;
|
|
|
|
// Indicates whether the event is generated by auto repeat or not.
|
|
// if this is keyup event, always false.
|
|
bool mIsRepeat;
|
|
// Indicates whether the event is generated during IME (or deadkey)
|
|
// composition. This is initialized by EventStateManager. So, key event
|
|
// dispatchers don't need to initialize this.
|
|
bool mIsComposing;
|
|
// Indicates whether the event is synthesized from Text Input Processor
|
|
// or an actual event from nsAppShell.
|
|
bool mIsSynthesizedByTIP;
|
|
// Indicates whether the event is skippable in remote process.
|
|
// Don't refer this member directly when you need to check this.
|
|
// Use CanSkipInRemoteProcess() instead.
|
|
bool mMaybeSkippableInRemoteProcess;
|
|
// Indicates whether the event should return legacy keyCode value and
|
|
// charCode value to web apps (one of them is always 0) or not, when it's
|
|
// an eKeyPress event.
|
|
bool mUseLegacyKeyCodeAndCharCodeValues;
|
|
|
|
bool CanSkipInRemoteProcess() const {
|
|
// If this is a repeat event (i.e., generated by auto-repeat feature of
|
|
// the platform), remove process may skip to handle it because of
|
|
// performances reasons.. However, if it's caused by odd keyboard utils,
|
|
// we should not ignore any key events even marked as repeated since
|
|
// generated key sequence may be important to input proper text. E.g.,
|
|
// "SinhalaTamil IME" on Windows emulates dead key like input with
|
|
// generating WM_KEYDOWN for VK_PACKET (inputting any Unicode characters
|
|
// without keyboard layout information) and VK_BACK (Backspace) to remove
|
|
// previous character(s) and those messages may be marked as "repeat" by
|
|
// their bug.
|
|
return mIsRepeat && mMaybeSkippableInRemoteProcess;
|
|
}
|
|
|
|
/**
|
|
* Retrieves all edit commands from mWidget. This shouldn't be called when
|
|
* the instance is an untrusted event, doesn't have widget or in non-chrome
|
|
* process.
|
|
*/
|
|
void InitAllEditCommands();
|
|
|
|
/**
|
|
* Retrieves edit commands from mWidget only for aType. This shouldn't be
|
|
* called when the instance is an untrusted event or doesn't have widget.
|
|
*
|
|
* @return false if some resource is not available to get
|
|
* commands unexpectedly. Otherwise, true even if
|
|
* retrieved command is nothing.
|
|
*/
|
|
bool InitEditCommandsFor(nsIWidget::NativeKeyBindingsType aType);
|
|
|
|
/**
|
|
* PreventNativeKeyBindings() makes the instance to not cause any edit
|
|
* actions even if it matches with a native key binding.
|
|
*/
|
|
void PreventNativeKeyBindings() {
|
|
mEditCommandsForSingleLineEditor.Clear();
|
|
mEditCommandsForMultiLineEditor.Clear();
|
|
mEditCommandsForRichTextEditor.Clear();
|
|
mEditCommandsForSingleLineEditorInitialized = true;
|
|
mEditCommandsForMultiLineEditorInitialized = true;
|
|
mEditCommandsForRichTextEditorInitialized = true;
|
|
}
|
|
|
|
/**
|
|
* EditCommandsConstRef() returns reference to edit commands for aType.
|
|
*/
|
|
const nsTArray<CommandInt>& EditCommandsConstRef(
|
|
nsIWidget::NativeKeyBindingsType aType) const {
|
|
return const_cast<WidgetKeyboardEvent*>(this)->EditCommandsRef(aType);
|
|
}
|
|
|
|
/**
|
|
* IsEditCommandsInitialized() returns true if edit commands for aType
|
|
* was already initialized. Otherwise, false.
|
|
*/
|
|
bool IsEditCommandsInitialized(nsIWidget::NativeKeyBindingsType aType) const {
|
|
return const_cast<WidgetKeyboardEvent*>(this)->IsEditCommandsInitializedRef(
|
|
aType);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/**
|
|
* AreAllEditCommandsInitialized() returns true if edit commands for all
|
|
* types were already initialized. Otherwise, false.
|
|
*/
|
|
bool AreAllEditCommandsInitialized() const {
|
|
return mEditCommandsForSingleLineEditorInitialized &&
|
|
mEditCommandsForMultiLineEditorInitialized &&
|
|
mEditCommandsForRichTextEditorInitialized;
|
|
}
|
|
#endif // #ifdef DEBUG
|
|
|
|
/**
|
|
* Execute edit commands for aType.
|
|
*
|
|
* @return true if the caller should do nothing anymore.
|
|
* false, otherwise.
|
|
*/
|
|
typedef void (*DoCommandCallback)(Command, void*);
|
|
bool ExecuteEditCommands(nsIWidget::NativeKeyBindingsType aType,
|
|
DoCommandCallback aCallback, void* aCallbackData);
|
|
|
|
// If the key should cause keypress events, this returns true.
|
|
// Otherwise, false.
|
|
bool ShouldCauseKeypressEvents() const;
|
|
|
|
// mCharCode value of non-eKeyPress events is always 0. However, if
|
|
// non-eKeyPress event has one or more alternative char code values,
|
|
// its first item should be the mCharCode value of following eKeyPress event.
|
|
// PseudoCharCode() returns mCharCode value for eKeyPress event,
|
|
// the first alternative char code value of non-eKeyPress event or 0.
|
|
uint32_t PseudoCharCode() const {
|
|
return mMessage == eKeyPress ? mCharCode : mPseudoCharCode;
|
|
}
|
|
void SetCharCode(uint32_t aCharCode) {
|
|
if (mMessage == eKeyPress) {
|
|
mCharCode = aCharCode;
|
|
} else {
|
|
mPseudoCharCode = aCharCode;
|
|
}
|
|
}
|
|
|
|
void GetDOMKeyName(nsAString& aKeyName) {
|
|
if (mKeyNameIndex == KEY_NAME_INDEX_USE_STRING) {
|
|
aKeyName = mKeyValue;
|
|
return;
|
|
}
|
|
GetDOMKeyName(mKeyNameIndex, aKeyName);
|
|
}
|
|
void GetDOMCodeName(nsAString& aCodeName) {
|
|
if (mCodeNameIndex == CODE_NAME_INDEX_USE_STRING) {
|
|
aCodeName = mCodeValue;
|
|
return;
|
|
}
|
|
GetDOMCodeName(mCodeNameIndex, aCodeName);
|
|
}
|
|
|
|
/**
|
|
* GetFallbackKeyCodeOfPunctuationKey() returns a DOM keyCode value for
|
|
* aCodeNameIndex. This is keyCode value of the key when active keyboard
|
|
* layout is ANSI (US), JIS or ABNT keyboard layout (the latter 2 layouts
|
|
* are used only when ANSI doesn't have the key). The result is useful
|
|
* if the key doesn't produce ASCII character with active keyboard layout
|
|
* nor with alternative ASCII capable keyboard layout.
|
|
*/
|
|
static uint32_t GetFallbackKeyCodeOfPunctuationKey(
|
|
CodeNameIndex aCodeNameIndex);
|
|
|
|
bool IsModifierKeyEvent() const {
|
|
return GetModifierForKeyName(mKeyNameIndex) != MODIFIER_NONE;
|
|
}
|
|
|
|
/**
|
|
* Get the candidates for shortcut key.
|
|
*
|
|
* @param aCandidates [out] the candidate shortcut key combination list.
|
|
* the first item is most preferred.
|
|
*/
|
|
void GetShortcutKeyCandidates(ShortcutKeyCandidateArray& aCandidates) const;
|
|
|
|
/**
|
|
* Get the candidates for access key.
|
|
*
|
|
* @param aCandidates [out] the candidate access key list.
|
|
* the first item is most preferred.
|
|
*/
|
|
void GetAccessKeyCandidates(nsTArray<uint32_t>& aCandidates) const;
|
|
|
|
/**
|
|
* Check whether the modifiers match with chrome access key or
|
|
* content access key.
|
|
*/
|
|
bool ModifiersMatchWithAccessKey(AccessKeyType aType) const;
|
|
|
|
/**
|
|
* Return active modifiers which may match with access key.
|
|
* For example, even if Alt is access key modifier, then, when Control,
|
|
* CapseLock and NumLock are active, this returns only MODIFIER_CONTROL.
|
|
*/
|
|
Modifiers ModifiersForAccessKeyMatching() const;
|
|
|
|
/**
|
|
* Return access key modifiers.
|
|
*/
|
|
static Modifiers AccessKeyModifiers(AccessKeyType aType);
|
|
|
|
static void Shutdown();
|
|
|
|
/**
|
|
* ComputeLocationFromCodeValue() returns one of .mLocation value
|
|
* (eKeyLocation*) which is the most preferred value for the specified code
|
|
* value.
|
|
*/
|
|
static uint32_t ComputeLocationFromCodeValue(CodeNameIndex aCodeNameIndex);
|
|
|
|
/**
|
|
* ComputeKeyCodeFromKeyNameIndex() return a .mKeyCode value which can be
|
|
* mapped from the specified key value. Note that this returns 0 if the
|
|
* key name index is KEY_NAME_INDEX_Unidentified or KEY_NAME_INDEX_USE_STRING.
|
|
* This means that this method is useful only for non-printable keys.
|
|
*/
|
|
static uint32_t ComputeKeyCodeFromKeyNameIndex(KeyNameIndex aKeyNameIndex);
|
|
|
|
/**
|
|
* ComputeCodeNameIndexFromKeyNameIndex() returns a code name index which
|
|
* is typically mapped to given key name index on the platform.
|
|
* Note that this returns CODE_NAME_INDEX_UNKNOWN if the key name index is
|
|
* KEY_NAME_INDEX_Unidentified or KEY_NAME_INDEX_USE_STRING.
|
|
* This means that this method is useful only for non-printable keys.
|
|
*
|
|
* @param aKeyNameIndex A non-printable key name index.
|
|
* @param aLocation Should be one of location value. This is
|
|
* important when aKeyNameIndex may exist in
|
|
* both Numpad or Standard, or in both Left or
|
|
* Right. If this is nothing, this method
|
|
* returns Left or Standard position's code
|
|
* value.
|
|
*/
|
|
static CodeNameIndex ComputeCodeNameIndexFromKeyNameIndex(
|
|
KeyNameIndex aKeyNameIndex, const Maybe<uint32_t>& aLocation);
|
|
|
|
/**
|
|
* GetModifierForKeyName() returns a value of Modifier which is activated
|
|
* by the aKeyNameIndex.
|
|
*/
|
|
static Modifier GetModifierForKeyName(KeyNameIndex aKeyNameIndex);
|
|
|
|
/**
|
|
* IsLeftOrRightModiferKeyNameIndex() returns true if aKeyNameIndex is a
|
|
* modifier key which may be in Left and Right location.
|
|
*/
|
|
static bool IsLeftOrRightModiferKeyNameIndex(KeyNameIndex aKeyNameIndex) {
|
|
switch (aKeyNameIndex) {
|
|
case KEY_NAME_INDEX_Alt:
|
|
case KEY_NAME_INDEX_Control:
|
|
case KEY_NAME_INDEX_Meta:
|
|
case KEY_NAME_INDEX_OS:
|
|
case KEY_NAME_INDEX_Shift:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* IsLockableModifier() returns true if aKeyNameIndex is a lockable modifier
|
|
* key such as CapsLock and NumLock.
|
|
*/
|
|
static bool IsLockableModifier(KeyNameIndex aKeyNameIndex);
|
|
|
|
static void GetDOMKeyName(KeyNameIndex aKeyNameIndex, nsAString& aKeyName);
|
|
static void GetDOMCodeName(CodeNameIndex aCodeNameIndex,
|
|
nsAString& aCodeName);
|
|
|
|
static KeyNameIndex GetKeyNameIndex(const nsAString& aKeyValue);
|
|
static CodeNameIndex GetCodeNameIndex(const nsAString& aCodeValue);
|
|
|
|
static const char* GetCommandStr(Command aCommand);
|
|
|
|
void AssignKeyEventData(const WidgetKeyboardEvent& aEvent,
|
|
bool aCopyTargets) {
|
|
AssignInputEventData(aEvent, aCopyTargets);
|
|
|
|
mKeyCode = aEvent.mKeyCode;
|
|
mCharCode = aEvent.mCharCode;
|
|
mPseudoCharCode = aEvent.mPseudoCharCode;
|
|
mLocation = aEvent.mLocation;
|
|
mAlternativeCharCodes = aEvent.mAlternativeCharCodes;
|
|
mIsRepeat = aEvent.mIsRepeat;
|
|
mIsComposing = aEvent.mIsComposing;
|
|
mKeyNameIndex = aEvent.mKeyNameIndex;
|
|
mCodeNameIndex = aEvent.mCodeNameIndex;
|
|
mKeyValue = aEvent.mKeyValue;
|
|
mCodeValue = aEvent.mCodeValue;
|
|
// Don't copy mNativeKeyEvent because it may be referred after its instance
|
|
// is destroyed.
|
|
mNativeKeyEvent = nullptr;
|
|
mUniqueId = aEvent.mUniqueId;
|
|
#ifdef XP_MACOSX
|
|
mNativeKeyCode = aEvent.mNativeKeyCode;
|
|
mNativeModifierFlags = aEvent.mNativeModifierFlags;
|
|
mNativeCharacters.Assign(aEvent.mNativeCharacters);
|
|
mNativeCharactersIgnoringModifiers.Assign(
|
|
aEvent.mNativeCharactersIgnoringModifiers);
|
|
mPluginTextEventString.Assign(aEvent.mPluginTextEventString);
|
|
#endif
|
|
mIsSynthesizedByTIP = aEvent.mIsSynthesizedByTIP;
|
|
mMaybeSkippableInRemoteProcess = aEvent.mMaybeSkippableInRemoteProcess;
|
|
mUseLegacyKeyCodeAndCharCodeValues =
|
|
aEvent.mUseLegacyKeyCodeAndCharCodeValues;
|
|
|
|
// Don't copy mEditCommandsFor*Editor because it may require a lot of
|
|
// memory space. For example, if the event is dispatched but grabbed by
|
|
// a JS variable, they are not necessary anymore.
|
|
|
|
mEditCommandsForSingleLineEditorInitialized =
|
|
aEvent.mEditCommandsForSingleLineEditorInitialized;
|
|
mEditCommandsForMultiLineEditorInitialized =
|
|
aEvent.mEditCommandsForMultiLineEditorInitialized;
|
|
mEditCommandsForRichTextEditorInitialized =
|
|
aEvent.mEditCommandsForRichTextEditorInitialized;
|
|
}
|
|
|
|
void AssignCommands(const WidgetKeyboardEvent& aEvent) {
|
|
mEditCommandsForSingleLineEditorInitialized =
|
|
aEvent.mEditCommandsForSingleLineEditorInitialized;
|
|
if (mEditCommandsForSingleLineEditorInitialized) {
|
|
mEditCommandsForSingleLineEditor =
|
|
aEvent.mEditCommandsForSingleLineEditor;
|
|
} else {
|
|
mEditCommandsForSingleLineEditor.Clear();
|
|
}
|
|
mEditCommandsForMultiLineEditorInitialized =
|
|
aEvent.mEditCommandsForMultiLineEditorInitialized;
|
|
if (mEditCommandsForMultiLineEditorInitialized) {
|
|
mEditCommandsForMultiLineEditor = aEvent.mEditCommandsForMultiLineEditor;
|
|
} else {
|
|
mEditCommandsForMultiLineEditor.Clear();
|
|
}
|
|
mEditCommandsForRichTextEditorInitialized =
|
|
aEvent.mEditCommandsForRichTextEditorInitialized;
|
|
if (mEditCommandsForRichTextEditorInitialized) {
|
|
mEditCommandsForRichTextEditor = aEvent.mEditCommandsForRichTextEditor;
|
|
} else {
|
|
mEditCommandsForRichTextEditor.Clear();
|
|
}
|
|
}
|
|
|
|
private:
|
|
static const char16_t* const kKeyNames[];
|
|
static const char16_t* const kCodeNames[];
|
|
typedef nsDataHashtable<nsStringHashKey, KeyNameIndex> KeyNameIndexHashtable;
|
|
typedef nsDataHashtable<nsStringHashKey, CodeNameIndex>
|
|
CodeNameIndexHashtable;
|
|
static KeyNameIndexHashtable* sKeyNameIndexHashtable;
|
|
static CodeNameIndexHashtable* sCodeNameIndexHashtable;
|
|
|
|
// mEditCommandsFor*Editor store edit commands. This should be initialized
|
|
// with InitEditCommandsFor().
|
|
// XXX Ideally, this should be array of Command rather than CommandInt.
|
|
// However, ParamTraits isn't aware of enum array.
|
|
nsTArray<CommandInt> mEditCommandsForSingleLineEditor;
|
|
nsTArray<CommandInt> mEditCommandsForMultiLineEditor;
|
|
nsTArray<CommandInt> mEditCommandsForRichTextEditor;
|
|
|
|
nsTArray<CommandInt>& EditCommandsRef(
|
|
nsIWidget::NativeKeyBindingsType aType) {
|
|
switch (aType) {
|
|
case nsIWidget::NativeKeyBindingsForSingleLineEditor:
|
|
return mEditCommandsForSingleLineEditor;
|
|
case nsIWidget::NativeKeyBindingsForMultiLineEditor:
|
|
return mEditCommandsForMultiLineEditor;
|
|
case nsIWidget::NativeKeyBindingsForRichTextEditor:
|
|
return mEditCommandsForRichTextEditor;
|
|
default:
|
|
MOZ_MAKE_COMPILER_ASSUME_IS_UNREACHABLE(
|
|
"Invalid native key binding type");
|
|
}
|
|
}
|
|
|
|
// mEditCommandsFor*EditorInitialized are set to true when
|
|
// InitEditCommandsFor() initializes edit commands for the type.
|
|
bool mEditCommandsForSingleLineEditorInitialized;
|
|
bool mEditCommandsForMultiLineEditorInitialized;
|
|
bool mEditCommandsForRichTextEditorInitialized;
|
|
|
|
bool& IsEditCommandsInitializedRef(nsIWidget::NativeKeyBindingsType aType) {
|
|
switch (aType) {
|
|
case nsIWidget::NativeKeyBindingsForSingleLineEditor:
|
|
return mEditCommandsForSingleLineEditorInitialized;
|
|
case nsIWidget::NativeKeyBindingsForMultiLineEditor:
|
|
return mEditCommandsForMultiLineEditorInitialized;
|
|
case nsIWidget::NativeKeyBindingsForRichTextEditor:
|
|
return mEditCommandsForRichTextEditorInitialized;
|
|
default:
|
|
MOZ_MAKE_COMPILER_ASSUME_IS_UNREACHABLE(
|
|
"Invalid native key binding type");
|
|
}
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetCompositionEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetCompositionEvent : public WidgetGUIEvent {
|
|
private:
|
|
friend class mozilla::dom::PBrowserParent;
|
|
friend class mozilla::dom::PBrowserChild;
|
|
|
|
WidgetCompositionEvent() : mOriginalMessage(eVoidEvent) {}
|
|
|
|
public:
|
|
virtual WidgetCompositionEvent* AsCompositionEvent() override { return this; }
|
|
|
|
WidgetCompositionEvent(bool aIsTrusted, EventMessage aMessage,
|
|
nsIWidget* aWidget)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, eCompositionEventClass),
|
|
mNativeIMEContext(aWidget),
|
|
mOriginalMessage(eVoidEvent) {}
|
|
|
|
virtual WidgetEvent* Duplicate() const override {
|
|
MOZ_ASSERT(mClass == eCompositionEventClass,
|
|
"Duplicate() must be overridden by sub class");
|
|
// Not copying widget, it is a weak reference.
|
|
WidgetCompositionEvent* result =
|
|
new WidgetCompositionEvent(false, mMessage, nullptr);
|
|
result->AssignCompositionEventData(*this, true);
|
|
result->mFlags = mFlags;
|
|
return result;
|
|
}
|
|
|
|
// The composition string or the commit string. If the instance is a
|
|
// compositionstart event, this is initialized with selected text by
|
|
// TextComposition automatically.
|
|
nsString mData;
|
|
|
|
RefPtr<TextRangeArray> mRanges;
|
|
|
|
// mNativeIMEContext stores the native IME context which causes the
|
|
// composition event.
|
|
widget::NativeIMEContext mNativeIMEContext;
|
|
|
|
// If the instance is a clone of another event, mOriginalMessage stores
|
|
// the another event's mMessage.
|
|
EventMessage mOriginalMessage;
|
|
|
|
void AssignCompositionEventData(const WidgetCompositionEvent& aEvent,
|
|
bool aCopyTargets) {
|
|
AssignGUIEventData(aEvent, aCopyTargets);
|
|
|
|
mData = aEvent.mData;
|
|
mOriginalMessage = aEvent.mOriginalMessage;
|
|
mRanges = aEvent.mRanges;
|
|
|
|
// Currently, we don't need to copy the other members because they are
|
|
// for internal use only (not available from JS).
|
|
}
|
|
|
|
bool IsComposing() const { return mRanges && mRanges->IsComposing(); }
|
|
|
|
uint32_t TargetClauseOffset() const {
|
|
return mRanges ? mRanges->TargetClauseOffset() : 0;
|
|
}
|
|
|
|
uint32_t TargetClauseLength() const {
|
|
uint32_t length = UINT32_MAX;
|
|
if (mRanges) {
|
|
length = mRanges->TargetClauseLength();
|
|
}
|
|
return length == UINT32_MAX ? mData.Length() : length;
|
|
}
|
|
|
|
uint32_t RangeCount() const { return mRanges ? mRanges->Length() : 0; }
|
|
|
|
bool CausesDOMTextEvent() const {
|
|
return mMessage == eCompositionChange || mMessage == eCompositionCommit ||
|
|
mMessage == eCompositionCommitAsIs;
|
|
}
|
|
|
|
bool CausesDOMCompositionEndEvent() const {
|
|
return mMessage == eCompositionEnd || mMessage == eCompositionCommit ||
|
|
mMessage == eCompositionCommitAsIs;
|
|
}
|
|
|
|
bool IsFollowedByCompositionEnd() const {
|
|
return IsFollowedByCompositionEnd(mOriginalMessage);
|
|
}
|
|
|
|
static bool IsFollowedByCompositionEnd(EventMessage aEventMessage) {
|
|
return aEventMessage == eCompositionCommit ||
|
|
aEventMessage == eCompositionCommitAsIs;
|
|
}
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetQueryContentEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetQueryContentEvent : public WidgetGUIEvent {
|
|
private:
|
|
friend class dom::PBrowserParent;
|
|
friend class dom::PBrowserChild;
|
|
|
|
WidgetQueryContentEvent()
|
|
: mSucceeded(false),
|
|
mUseNativeLineBreak(true),
|
|
mWithFontRanges(false),
|
|
mNeedsToFlushLayout(true) {
|
|
MOZ_CRASH("WidgetQueryContentEvent is created without proper arguments");
|
|
}
|
|
|
|
public:
|
|
virtual WidgetQueryContentEvent* AsQueryContentEvent() override {
|
|
return this;
|
|
}
|
|
|
|
WidgetQueryContentEvent(bool aIsTrusted, EventMessage aMessage,
|
|
nsIWidget* aWidget)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, eQueryContentEventClass),
|
|
mSucceeded(false),
|
|
mUseNativeLineBreak(true),
|
|
mWithFontRanges(false),
|
|
mNeedsToFlushLayout(true) {}
|
|
|
|
WidgetQueryContentEvent(EventMessage aMessage,
|
|
const WidgetQueryContentEvent& aOtherEvent)
|
|
: WidgetGUIEvent(aOtherEvent.IsTrusted(), aMessage,
|
|
const_cast<nsIWidget*>(aOtherEvent.mWidget.get()),
|
|
eQueryContentEventClass),
|
|
mSucceeded(false),
|
|
mUseNativeLineBreak(aOtherEvent.mUseNativeLineBreak),
|
|
mWithFontRanges(false),
|
|
mNeedsToFlushLayout(aOtherEvent.mNeedsToFlushLayout) {}
|
|
|
|
virtual WidgetEvent* Duplicate() const override {
|
|
// This event isn't an internal event of any DOM event.
|
|
NS_ASSERTION(!IsAllowedToDispatchDOMEvent(),
|
|
"WidgetQueryContentEvent needs to support Duplicate()");
|
|
MOZ_CRASH("WidgetQueryContentEvent doesn't support Duplicate()");
|
|
}
|
|
|
|
struct Options final {
|
|
bool mUseNativeLineBreak;
|
|
bool mRelativeToInsertionPoint;
|
|
|
|
explicit Options()
|
|
: mUseNativeLineBreak(true), mRelativeToInsertionPoint(false) {}
|
|
|
|
explicit Options(const WidgetQueryContentEvent& aEvent)
|
|
: mUseNativeLineBreak(aEvent.mUseNativeLineBreak),
|
|
mRelativeToInsertionPoint(aEvent.mInput.mRelativeToInsertionPoint) {}
|
|
};
|
|
|
|
void Init(const Options& aOptions) {
|
|
mUseNativeLineBreak = aOptions.mUseNativeLineBreak;
|
|
mInput.mRelativeToInsertionPoint = aOptions.mRelativeToInsertionPoint;
|
|
MOZ_ASSERT(mInput.IsValidEventMessage(mMessage));
|
|
}
|
|
|
|
void InitForQueryTextContent(int64_t aOffset, uint32_t aLength,
|
|
const Options& aOptions = Options()) {
|
|
NS_ASSERTION(mMessage == eQueryTextContent, "wrong initializer is called");
|
|
mInput.mOffset = aOffset;
|
|
mInput.mLength = aLength;
|
|
Init(aOptions);
|
|
MOZ_ASSERT(mInput.IsValidOffset());
|
|
}
|
|
|
|
void InitForQueryCaretRect(int64_t aOffset,
|
|
const Options& aOptions = Options()) {
|
|
NS_ASSERTION(mMessage == eQueryCaretRect, "wrong initializer is called");
|
|
mInput.mOffset = aOffset;
|
|
Init(aOptions);
|
|
MOZ_ASSERT(mInput.IsValidOffset());
|
|
}
|
|
|
|
void InitForQueryTextRect(int64_t aOffset, uint32_t aLength,
|
|
const Options& aOptions = Options()) {
|
|
NS_ASSERTION(mMessage == eQueryTextRect, "wrong initializer is called");
|
|
mInput.mOffset = aOffset;
|
|
mInput.mLength = aLength;
|
|
Init(aOptions);
|
|
MOZ_ASSERT(mInput.IsValidOffset());
|
|
}
|
|
|
|
void InitForQuerySelectedText(SelectionType aSelectionType,
|
|
const Options& aOptions = Options()) {
|
|
MOZ_ASSERT(mMessage == eQuerySelectedText);
|
|
MOZ_ASSERT(aSelectionType != SelectionType::eNone);
|
|
mInput.mSelectionType = aSelectionType;
|
|
Init(aOptions);
|
|
}
|
|
|
|
void InitForQueryDOMWidgetHittest(
|
|
const mozilla::LayoutDeviceIntPoint& aPoint) {
|
|
NS_ASSERTION(mMessage == eQueryDOMWidgetHittest,
|
|
"wrong initializer is called");
|
|
mRefPoint = aPoint;
|
|
}
|
|
|
|
void InitForQueryTextRectArray(uint32_t aOffset, uint32_t aLength,
|
|
const Options& aOptions = Options()) {
|
|
NS_ASSERTION(mMessage == eQueryTextRectArray,
|
|
"wrong initializer is called");
|
|
mInput.mOffset = aOffset;
|
|
mInput.mLength = aLength;
|
|
Init(aOptions);
|
|
}
|
|
|
|
bool NeedsToFlushLayout() const { return mNeedsToFlushLayout; }
|
|
|
|
void RequestFontRanges() {
|
|
NS_ASSERTION(mMessage == eQueryTextContent, "not querying text content");
|
|
mWithFontRanges = true;
|
|
}
|
|
|
|
uint32_t GetSelectionStart(void) const {
|
|
NS_ASSERTION(mMessage == eQuerySelectedText, "not querying selection");
|
|
return mReply.mOffset + (mReply.mReversed ? mReply.mString.Length() : 0);
|
|
}
|
|
|
|
uint32_t GetSelectionEnd(void) const {
|
|
NS_ASSERTION(mMessage == eQuerySelectedText, "not querying selection");
|
|
return mReply.mOffset + (mReply.mReversed ? 0 : mReply.mString.Length());
|
|
}
|
|
|
|
mozilla::WritingMode GetWritingMode(void) const {
|
|
NS_ASSERTION(mMessage == eQuerySelectedText ||
|
|
mMessage == eQueryCaretRect || mMessage == eQueryTextRect,
|
|
"not querying selection or text rect");
|
|
return mReply.mWritingMode;
|
|
}
|
|
|
|
bool mSucceeded;
|
|
bool mUseNativeLineBreak;
|
|
bool mWithFontRanges;
|
|
bool mNeedsToFlushLayout;
|
|
struct Input final {
|
|
uint32_t EndOffset() const {
|
|
CheckedInt<uint32_t> endOffset = CheckedInt<uint32_t>(mOffset) + mLength;
|
|
return NS_WARN_IF(!endOffset.isValid()) ? UINT32_MAX : endOffset.value();
|
|
}
|
|
|
|
int64_t mOffset;
|
|
uint32_t mLength;
|
|
SelectionType mSelectionType;
|
|
// If mOffset is true, mOffset is relative to the start offset of
|
|
// composition if there is, otherwise, the start of the first selection
|
|
// range.
|
|
bool mRelativeToInsertionPoint;
|
|
|
|
Input()
|
|
: mOffset(0),
|
|
mLength(0),
|
|
mSelectionType(SelectionType::eNormal),
|
|
mRelativeToInsertionPoint(false) {}
|
|
|
|
bool IsValidOffset() const {
|
|
return mRelativeToInsertionPoint || mOffset >= 0;
|
|
}
|
|
bool IsValidEventMessage(EventMessage aEventMessage) const {
|
|
if (!mRelativeToInsertionPoint) {
|
|
return true;
|
|
}
|
|
switch (aEventMessage) {
|
|
case eQueryTextContent:
|
|
case eQueryCaretRect:
|
|
case eQueryTextRect:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
bool MakeOffsetAbsolute(uint32_t aInsertionPointOffset) {
|
|
if (NS_WARN_IF(!mRelativeToInsertionPoint)) {
|
|
return true;
|
|
}
|
|
mRelativeToInsertionPoint = false;
|
|
// If mOffset + aInsertionPointOffset becomes negative value,
|
|
// we should assume the absolute offset is 0.
|
|
if (mOffset < 0 && -mOffset > aInsertionPointOffset) {
|
|
mOffset = 0;
|
|
return true;
|
|
}
|
|
// Otherwise, we don't allow too large offset.
|
|
CheckedInt<uint32_t> absOffset =
|
|
CheckedInt<uint32_t>(mOffset) + aInsertionPointOffset;
|
|
if (NS_WARN_IF(!absOffset.isValid())) {
|
|
mOffset = UINT32_MAX;
|
|
return false;
|
|
}
|
|
mOffset = absOffset.value();
|
|
return true;
|
|
}
|
|
} mInput;
|
|
|
|
struct Reply final {
|
|
void* mContentsRoot;
|
|
uint32_t mOffset;
|
|
// mTentativeCaretOffset is used by only eQueryCharacterAtPoint.
|
|
// This is the offset where caret would be if user clicked at the mRefPoint.
|
|
uint32_t mTentativeCaretOffset;
|
|
nsString mString;
|
|
// mRect is used by eQueryTextRect, eQueryCaretRect, eQueryCharacterAtPoint
|
|
// and eQueryEditorRect. The coordinates is system coordinates relative to
|
|
// the top level widget of mFocusedWidget. E.g., if a <xul:panel> which
|
|
// is owned by a window has focused editor, the offset of mRect is relative
|
|
// to the owner window, not the <xul:panel>.
|
|
mozilla::LayoutDeviceIntRect mRect;
|
|
// The return widget has the caret. This is set at all query events.
|
|
nsIWidget* mFocusedWidget;
|
|
// mozilla::WritingMode value at the end (focus) of the selection
|
|
mozilla::WritingMode mWritingMode;
|
|
// Used by eQuerySelectionAsTransferable
|
|
nsCOMPtr<nsITransferable> mTransferable;
|
|
// Used by eQueryTextContent with font ranges requested
|
|
AutoTArray<mozilla::FontRange, 1> mFontRanges;
|
|
// Used by eQueryTextRectArray
|
|
nsTArray<mozilla::LayoutDeviceIntRect> mRectArray;
|
|
// true if selection is reversed (end < start)
|
|
bool mReversed;
|
|
// true if the selection exists
|
|
bool mHasSelection;
|
|
// true if DOM element under mouse belongs to widget
|
|
bool mWidgetIsHit;
|
|
|
|
Reply()
|
|
: mContentsRoot(nullptr),
|
|
mOffset(NOT_FOUND),
|
|
mTentativeCaretOffset(NOT_FOUND),
|
|
mFocusedWidget(nullptr),
|
|
mReversed(false),
|
|
mHasSelection(false),
|
|
mWidgetIsHit(false) {}
|
|
} mReply;
|
|
|
|
enum { NOT_FOUND = UINT32_MAX };
|
|
|
|
// values of mComputedScrollAction
|
|
enum { SCROLL_ACTION_NONE, SCROLL_ACTION_LINE, SCROLL_ACTION_PAGE };
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::WidgetSelectionEvent
|
|
******************************************************************************/
|
|
|
|
class WidgetSelectionEvent : public WidgetGUIEvent {
|
|
private:
|
|
friend class mozilla::dom::PBrowserParent;
|
|
friend class mozilla::dom::PBrowserChild;
|
|
|
|
WidgetSelectionEvent()
|
|
: mOffset(0),
|
|
mLength(0),
|
|
mReversed(false),
|
|
mExpandToClusterBoundary(true),
|
|
mSucceeded(false),
|
|
mUseNativeLineBreak(true),
|
|
mReason(nsISelectionListener::NO_REASON) {}
|
|
|
|
public:
|
|
virtual WidgetSelectionEvent* AsSelectionEvent() override { return this; }
|
|
|
|
WidgetSelectionEvent(bool aIsTrusted, EventMessage aMessage,
|
|
nsIWidget* aWidget)
|
|
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, eSelectionEventClass),
|
|
mOffset(0),
|
|
mLength(0),
|
|
mReversed(false),
|
|
mExpandToClusterBoundary(true),
|
|
mSucceeded(false),
|
|
mUseNativeLineBreak(true),
|
|
mReason(nsISelectionListener::NO_REASON) {}
|
|
|
|
virtual WidgetEvent* Duplicate() const override {
|
|
// This event isn't an internal event of any DOM event.
|
|
NS_ASSERTION(!IsAllowedToDispatchDOMEvent(),
|
|
"WidgetSelectionEvent needs to support Duplicate()");
|
|
MOZ_CRASH("WidgetSelectionEvent doesn't support Duplicate()");
|
|
return nullptr;
|
|
}
|
|
|
|
// Start offset of selection
|
|
uint32_t mOffset;
|
|
// Length of selection
|
|
uint32_t mLength;
|
|
// Selection "anchor" should be in front
|
|
bool mReversed;
|
|
// Cluster-based or character-based
|
|
bool mExpandToClusterBoundary;
|
|
// true if setting selection succeeded.
|
|
bool mSucceeded;
|
|
// true if native line breaks are used for mOffset and mLength
|
|
bool mUseNativeLineBreak;
|
|
// Fennec provides eSetSelection reason codes for downstream
|
|
// use in AccessibleCaret visibility logic.
|
|
int16_t mReason;
|
|
};
|
|
|
|
/******************************************************************************
|
|
* mozilla::InternalEditorInputEvent
|
|
******************************************************************************/
|
|
|
|
class InternalEditorInputEvent : public InternalUIEvent {
|
|
private:
|
|
InternalEditorInputEvent()
|
|
: mData(VoidString()),
|
|
mInputType(EditorInputType::eUnknown),
|
|
mIsComposing(false) {}
|
|
|
|
public:
|
|
virtual InternalEditorInputEvent* AsEditorInputEvent() override {
|
|
return this;
|
|
}
|
|
|
|
InternalEditorInputEvent(bool aIsTrusted, EventMessage aMessage,
|
|
nsIWidget* aWidget = nullptr)
|
|
: InternalUIEvent(aIsTrusted, aMessage, aWidget, eEditorInputEventClass),
|
|
mData(VoidString()),
|
|
mInputType(EditorInputType::eUnknown) {}
|
|
|
|
virtual WidgetEvent* Duplicate() const override {
|
|
MOZ_ASSERT(mClass == eEditorInputEventClass,
|
|
"Duplicate() must be overridden by sub class");
|
|
// Not copying widget, it is a weak reference.
|
|
InternalEditorInputEvent* result =
|
|
new InternalEditorInputEvent(false, mMessage, nullptr);
|
|
result->AssignEditorInputEventData(*this, true);
|
|
result->mFlags = mFlags;
|
|
return result;
|
|
}
|
|
|
|
nsString mData;
|
|
RefPtr<dom::DataTransfer> mDataTransfer;
|
|
|
|
EditorInputType mInputType;
|
|
|
|
bool mIsComposing;
|
|
|
|
void AssignEditorInputEventData(const InternalEditorInputEvent& aEvent,
|
|
bool aCopyTargets) {
|
|
AssignUIEventData(aEvent, aCopyTargets);
|
|
|
|
mData = aEvent.mData;
|
|
mDataTransfer = aEvent.mDataTransfer;
|
|
mInputType = aEvent.mInputType;
|
|
mIsComposing = aEvent.mIsComposing;
|
|
}
|
|
|
|
void GetDOMInputTypeName(nsAString& aInputTypeName) {
|
|
GetDOMInputTypeName(mInputType, aInputTypeName);
|
|
}
|
|
static void GetDOMInputTypeName(EditorInputType aInputType,
|
|
nsAString& aInputTypeName);
|
|
static EditorInputType GetEditorInputType(const nsAString& aInputType);
|
|
|
|
static void Shutdown();
|
|
|
|
private:
|
|
static const char16_t* const kInputTypeNames[];
|
|
typedef nsDataHashtable<nsStringHashKey, EditorInputType> InputTypeHashtable;
|
|
static InputTypeHashtable* sInputTypeHashtable;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_TextEvents_h__
|