79 lines
2.5 KiB
C++
79 lines
2.5 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 PrefsHelper_h
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#define PrefsHelper_h
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#include "GeneratedJNINatives.h"
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#include "MainThreadUtils.h"
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#include "nsAppShell.h"
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#include "mozilla/UniquePtr.h"
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namespace mozilla {
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struct PrefsHelper
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: widget::PrefsHelper::Natives<PrefsHelper>
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, UsesGeckoThreadProxy
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{
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PrefsHelper() = delete;
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static void GetPrefsById(const jni::ClassObject::LocalRef& cls,
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int32_t requestId,
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jni::ObjectArray::Param prefNames,
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bool observe)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(nsAppShell::gAppShell);
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nsTArray<jni::Object::LocalRef> namesRefArray(prefNames.GetElements());
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const size_t len = namesRefArray.Length();
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// Java strings are not null-terminated, but XPCOM expects
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// null-terminated strings, so we copy the strings to nsString to
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// ensure null-termination.
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nsTArray<nsString> namesStrArray(len);
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nsTArray<const char16_t*> namesPtrArray(len);
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for (size_t i = 0; i < len; i++) {
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if (!namesRefArray[i]) {
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namesPtrArray.AppendElement(nullptr);
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continue;
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}
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namesPtrArray.AppendElement(namesStrArray.AppendElement(
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nsString(jni::String::LocalRef(
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mozilla::Move(namesRefArray[i]))))->Data());
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}
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nsIAndroidBrowserApp* browserApp = nullptr;
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nsAppShell::gAppShell->GetBrowserApp(&browserApp);
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MOZ_ASSERT(browserApp);
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if (observe) {
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browserApp->ObservePreferences(
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requestId, len ? &namesPtrArray[0] : nullptr, len);
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} else {
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browserApp->GetPreferences(
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requestId, len ? &namesPtrArray[0] : nullptr, len);
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}
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}
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static void RemovePrefsObserver(int32_t requestId)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(nsAppShell::gAppShell);
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nsIAndroidBrowserApp* browserApp = nullptr;
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nsAppShell::gAppShell->GetBrowserApp(&browserApp);
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MOZ_ASSERT(browserApp);
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browserApp->RemovePreferenceObservers(requestId);
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}
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};
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} // namespace
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#endif // PrefsHelper_h
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