зеркало из https://github.com/mozilla/gecko-dev.git
62 строки
1.8 KiB
C++
62 строки
1.8 KiB
C++
/* -*- Mode: c++; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GeckoSystemStateListener_h
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#define GeckoSystemStateListener_h
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#include "GeneratedJNINatives.h"
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#include "nsIDocument.h"
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#include "nsIPresShell.h"
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#include "nsIWindowMediator.h"
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#include "nsPIDOMWindow.h"
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#include "mozilla/Assertions.h"
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namespace mozilla {
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class GeckoSystemStateListener final
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: public java::GeckoSystemStateListener::Natives<GeckoSystemStateListener>
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{
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GeckoSystemStateListener() = delete;
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public:
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static void
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OnDeviceChanged()
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{
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MOZ_ASSERT(NS_IsMainThread());
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// Iterate all toplevel windows
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nsCOMPtr<nsIWindowMediator> windowMediator =
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do_GetService(NS_WINDOWMEDIATOR_CONTRACTID);
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NS_ENSURE_TRUE_VOID(windowMediator);
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nsCOMPtr<nsISimpleEnumerator> windowEnumerator;
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windowMediator->GetEnumerator(nullptr, getter_AddRefs(windowEnumerator));
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NS_ENSURE_TRUE_VOID(windowEnumerator);
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bool more;
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while (NS_SUCCEEDED(windowEnumerator->HasMoreElements(&more)) && more) {
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nsCOMPtr<nsISupports> elements;
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if (NS_FAILED(windowEnumerator->GetNext(getter_AddRefs(elements)))) {
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break;
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}
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if (nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryInterface(elements)) {
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if (window->Closed()) {
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continue;
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}
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if (nsIDocument* doc = window->GetExtantDoc()) {
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if (nsIPresShell* presShell = doc->GetShell()) {
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presShell->ThemeChanged();
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}
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}
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}
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}
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}
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};
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} // namespace mozilla
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#endif // GeckoSystemStateListener_h
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