зеркало из https://github.com/mozilla/gecko-dev.git
119 строки
3.3 KiB
C++
119 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 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 "ShortcutKeys.h"
|
|
#include "mozilla/KeyEventHandler.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsAtom.h"
|
|
#include "mozilla/TextEvents.h"
|
|
|
|
namespace mozilla {
|
|
|
|
NS_IMPL_ISUPPORTS(ShortcutKeys, nsIObserver);
|
|
|
|
StaticRefPtr<ShortcutKeys> ShortcutKeys::sInstance;
|
|
|
|
ShortcutKeys::ShortcutKeys()
|
|
: mBrowserHandlers(nullptr),
|
|
mEditorHandlers(nullptr),
|
|
mInputHandlers(nullptr),
|
|
mTextAreaHandlers(nullptr) {
|
|
MOZ_ASSERT(!sInstance, "Attempt to instantiate a second ShortcutKeys.");
|
|
nsContentUtils::RegisterShutdownObserver(this);
|
|
}
|
|
|
|
ShortcutKeys::~ShortcutKeys() {
|
|
delete mBrowserHandlers;
|
|
delete mEditorHandlers;
|
|
delete mInputHandlers;
|
|
delete mTextAreaHandlers;
|
|
}
|
|
|
|
nsresult ShortcutKeys::Observe(nsISupports* aSubject, const char* aTopic,
|
|
const char16_t* aData) {
|
|
// Clear our strong reference so we can clean up.
|
|
sInstance = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
/* static */
|
|
KeyEventHandler* ShortcutKeys::GetHandlers(HandlerType aType) {
|
|
if (!sInstance) {
|
|
sInstance = new ShortcutKeys();
|
|
}
|
|
|
|
return sInstance->EnsureHandlers(aType);
|
|
}
|
|
|
|
/* static */
|
|
nsAtom* ShortcutKeys::ConvertEventToDOMEventType(
|
|
const WidgetKeyboardEvent* aWidgetKeyboardEvent) {
|
|
switch (aWidgetKeyboardEvent->mMessage) {
|
|
case eKeyDown:
|
|
return nsGkAtoms::keydown;
|
|
case eKeyUp:
|
|
return nsGkAtoms::keyup;
|
|
// eAccessKeyNotFound event is always created from eKeyPress event and
|
|
// the original eKeyPress event has stopped its propagation before
|
|
// dispatched into the DOM tree in this process and not matched with remote
|
|
// content's access keys. So, we should treat it as an eKeyPress event and
|
|
// execute a command if it's registered as a shortcut key.
|
|
case eKeyPress:
|
|
case eAccessKeyNotFound:
|
|
return nsGkAtoms::keypress;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"All event messages relating to shortcut keys should be handled");
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
KeyEventHandler* ShortcutKeys::EnsureHandlers(HandlerType aType) {
|
|
ShortcutKeyData* keyData;
|
|
KeyEventHandler** cache;
|
|
|
|
switch (aType) {
|
|
case HandlerType::eBrowser:
|
|
keyData = &sBrowserHandlers[0];
|
|
cache = &mBrowserHandlers;
|
|
break;
|
|
case HandlerType::eEditor:
|
|
keyData = &sEditorHandlers[0];
|
|
cache = &mEditorHandlers;
|
|
break;
|
|
case HandlerType::eInput:
|
|
keyData = &sInputHandlers[0];
|
|
cache = &mInputHandlers;
|
|
break;
|
|
case HandlerType::eTextArea:
|
|
keyData = &sTextAreaHandlers[0];
|
|
cache = &mTextAreaHandlers;
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "Unknown handler type requested.");
|
|
}
|
|
|
|
if (*cache) {
|
|
return *cache;
|
|
}
|
|
|
|
KeyEventHandler* lastHandler = nullptr;
|
|
while (keyData->event) {
|
|
KeyEventHandler* handler = new KeyEventHandler(keyData);
|
|
if (lastHandler) {
|
|
lastHandler->SetNextHandler(handler);
|
|
} else {
|
|
*cache = handler;
|
|
}
|
|
lastHandler = handler;
|
|
keyData++;
|
|
}
|
|
|
|
return *cache;
|
|
}
|
|
|
|
} // namespace mozilla
|