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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=80: */
/* 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/. */
#include "TextInputHandler.h"
#import <UIKit/UIKit.h>
#include "mozilla/EventForwards.h"
#include "mozilla/Logging.h"
#include "mozilla/MiscEvents.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/TextEvents.h"
#include "mozilla/WidgetUtils.h"
#include "nsIWidget.h"
#include "nsObjCExceptions.h"
#include "nsString.h"
#include "nsWindow.h"
mozilla::LazyLogModule gIMELog("TextInputHandler");
namespace mozilla::widget {
static void GetStringForNSString(const NSString* aSrc, nsAString& aDist) {
NS_OBJC_BEGIN_TRY_IGNORE_BLOCK;
if (!aSrc) {
aDist.Truncate();
return;
}
aDist.SetLength([aSrc length]);
[aSrc getCharacters:reinterpret_cast<unichar*>(aDist.BeginWriting())
range:NSMakeRange(0, [aSrc length])];
NS_OBJC_END_TRY_IGNORE_BLOCK;
}
NS_IMPL_ISUPPORTS(TextInputHandler, TextEventDispatcherListener,
nsISupportsWeakReference)
TextInputHandler::TextInputHandler(nsWindow* aWidget)
: mWidget(aWidget), mDispatcher(aWidget->GetTextEventDispatcher()) {}
nsresult TextInputHandler::NotifyIME(TextEventDispatcher* aTextEventDispatcher,
const IMENotification& aNotification) {
return NS_OK;
}
IMENotificationRequests TextInputHandler::GetIMENotificationRequests() {
return IMENotificationRequests();
}
void TextInputHandler::OnRemovedFrom(
TextEventDispatcher* aTextEventDispatcher) {}
void TextInputHandler::WillDispatchKeyboardEvent(
TextEventDispatcher* aTextEventDispatcher,
WidgetKeyboardEvent& aKeyboardEvent, uint32_t aIndexOfKeypress,
void* aData) {}
bool TextInputHandler::InsertText(NSString* aText) {
nsString str;
GetStringForNSString(aText, str);
MOZ_LOG(gIMELog, LogLevel::Info,
("%p TextInputHandler::InsertText(aText=%s)", this,
NS_ConvertUTF16toUTF8(str).get()));
if (Destroyed()) {
return false;
}
if (str.Length() == 1) {
char16_t charCode = str[0];
if (charCode == 0x0a) {
return EmulateKeyboardEvent(NS_VK_RETURN, KEY_NAME_INDEX_Enter, charCode);
}
if (charCode == 0x08) {
return EmulateKeyboardEvent(NS_VK_BACK, KEY_NAME_INDEX_Backspace,
charCode);
}
if (uint32_t keyCode = WidgetUtils::ComputeKeyCodeFromChar(charCode)) {
return EmulateKeyboardEvent(keyCode, KEY_NAME_INDEX_USE_STRING, charCode);
}
}
nsEventStatus status = nsEventStatus_eIgnore;
RefPtr<nsWindow> widget(mWidget);
if (!DispatchKeyDownEvent(NS_VK_PROCESSKEY, KEY_NAME_INDEX_Process, 0,
status)) {
return false;
}
if (Destroyed()) {
return false;
}
mDispatcher->CommitComposition(status, &str, nullptr);
if (widget->Destroyed()) {
return false;
}
DispatchKeyUpEvent(NS_VK_PROCESSKEY, KEY_NAME_INDEX_Process, 0, status);
return true;
}
bool TextInputHandler::HandleCommand(Command aCommand) {
MOZ_LOG(gIMELog, LogLevel::Info,
("%p TextInputHandler::HandleCommand, aCommand=%s", this,
ToChar(aCommand)));
if (Destroyed()) {
return false;
}
if (aCommand != Command::DeleteCharBackward) {
return false;
}
nsEventStatus status = nsEventStatus_eIgnore;
if (!DispatchKeyDownEvent(NS_VK_BACK, KEY_NAME_INDEX_Backspace, 0, status)) {
return true;
}
if (Destroyed() || status == nsEventStatus_eConsumeNoDefault) {
return true;
}
// TODO: Focus check
if (!DispatchKeyPressEvent(NS_VK_BACK, KEY_NAME_INDEX_Backspace, 0, status)) {
return true;
}
if (Destroyed() || status == nsEventStatus_eConsumeNoDefault) {
return true;
}
// TODO: Focus check
DispatchKeyUpEvent(NS_VK_BACK, KEY_NAME_INDEX_Backspace, 0, status);
return true;
}
static uint32_t ComputeKeyModifiers(uint32_t aCharCode) {
if (aCharCode >= 'A' && aCharCode <= 'Z') {
return MODIFIER_SHIFT;
}
return 0;
}
static void InitKeyEvent(WidgetKeyboardEvent& aEvent, uint32_t aKeyCode,
KeyNameIndex aKeyNameIndex, char16_t aCharCode) {
aEvent.mKeyCode = aKeyCode;
aEvent.mIsRepeat = false;
aEvent.mKeyNameIndex = aKeyNameIndex;
// TODO(m_kato):
// How to get native key? Then, implement NativeKeyToDOM*.h for iOS
aEvent.mCodeNameIndex = CODE_NAME_INDEX_UNKNOWN;
if (aEvent.mKeyNameIndex == KEY_NAME_INDEX_USE_STRING) {
aEvent.mKeyValue = aCharCode;
}
aEvent.mModifiers = ComputeKeyModifiers(aCharCode);
aEvent.mLocation = eKeyLocationStandard;
aEvent.mTimeStamp = TimeStamp::Now();
}
bool TextInputHandler::DispatchKeyDownEvent(uint32_t aKeyCode,
KeyNameIndex aKeyNameIndex,
char16_t aCharCode,
nsEventStatus& aStatus) {
MOZ_ASSERT(aKeyCode);
MOZ_ASSERT(mWidget);
WidgetKeyboardEvent keydownEvent(true, eKeyDown, mWidget);
InitKeyEvent(keydownEvent, aKeyCode, aKeyNameIndex, aCharCode);
nsresult rv = mDispatcher->BeginNativeInputTransaction();
if (NS_FAILED(rv)) {
NS_WARNING("BeginNativeInputTransaction is failed");
return false;
}
return mDispatcher->DispatchKeyboardEvent(eKeyDown, keydownEvent, aStatus);
}
bool TextInputHandler::DispatchKeyUpEvent(uint32_t aKeyCode,
KeyNameIndex aKeyNameIndex,
char16_t aCharCode,
nsEventStatus& aStatus) {
MOZ_ASSERT(aKeyCode);
MOZ_ASSERT(mWidget);
WidgetKeyboardEvent keyupEvent(true, eKeyUp, mWidget);
InitKeyEvent(keyupEvent, aKeyCode, aKeyNameIndex, aCharCode);
nsresult rv = mDispatcher->BeginNativeInputTransaction();
if (NS_FAILED(rv)) {
NS_WARNING("BeginNativeInputTransaction is failed");
return false;
}
return mDispatcher->DispatchKeyboardEvent(eKeyUp, keyupEvent, aStatus);
}
bool TextInputHandler::DispatchKeyPressEvent(uint32_t aKeyCode,
KeyNameIndex aKeyNameIndex,
char16_t aCharCode,
nsEventStatus& aStatus) {
MOZ_ASSERT(aKeyCode);
MOZ_ASSERT(mWidget);
WidgetKeyboardEvent keypressEvent(true, eKeyPress, mWidget);
InitKeyEvent(keypressEvent, aKeyCode, aKeyNameIndex, aCharCode);
nsresult rv = mDispatcher->BeginNativeInputTransaction();
if (NS_FAILED(rv)) {
NS_WARNING("BeginNativeInputTransaction is failed");
return false;
}
return mDispatcher->MaybeDispatchKeypressEvents(keypressEvent, aStatus);
}
bool TextInputHandler::EmulateKeyboardEvent(uint32_t aKeyCode,
KeyNameIndex aKeyNameIndex,
char16_t aCharCode) {
MOZ_ASSERT(aCharCode);
MOZ_LOG(gIMELog, LogLevel::Info,
("%p TextInputHandler::EmulateKeyboardEvent(aKeyCode=%x, "
"aKeyNameIndex=%x, aCharCode=%x)",
this, aKeyCode, aKeyNameIndex, aCharCode));
nsEventStatus status = nsEventStatus_eIgnore;
if (!DispatchKeyDownEvent(aKeyCode, aKeyNameIndex, aCharCode, status)) {
return true;
}
if (Destroyed() || status == nsEventStatus_eConsumeNoDefault) {
return true;
}
// TODO: Focus check
if (!DispatchKeyPressEvent(aKeyCode, aKeyNameIndex, aCharCode, status)) {
return true;
}
if (Destroyed() || status == nsEventStatus_eConsumeNoDefault) {
return true;
}
// TODO: Focus check
DispatchKeyUpEvent(aKeyCode, aKeyNameIndex, aCharCode, status);
return true;
}
void TextInputHandler::OnDestroyed() { mWidget = nullptr; }
} // namespace mozilla::widget
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