diff options
Diffstat (limited to 'gfx/config/gfxFeature.cpp')
| -rw-r--r-- | gfx/config/gfxFeature.cpp | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/gfx/config/gfxFeature.cpp b/gfx/config/gfxFeature.cpp new file mode 100644 index 0000000000..71517e563c --- /dev/null +++ b/gfx/config/gfxFeature.cpp @@ -0,0 +1,307 @@ +/* -*- 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 "gfxFeature.h" + +#include "mozilla/Preferences.h" +#include "mozilla/Sprintf.h" +#include "nsString.h" + +namespace mozilla { +namespace gfx { + +bool FeatureState::IsEnabled() const { + return IsInitialized() && IsFeatureStatusSuccess(GetValue()); +} + +FeatureStatus FeatureState::GetValue() const { + if (!IsInitialized()) { + return FeatureStatus::Unused; + } + + if (mRuntime.mStatus != FeatureStatus::Unused) { + return mRuntime.mStatus; + } + if (mUser.mStatus == FeatureStatus::ForceEnabled) { + return FeatureStatus::ForceEnabled; + } + if (mEnvironment.mStatus != FeatureStatus::Unused) { + return mEnvironment.mStatus; + } + if (mUser.mStatus != FeatureStatus::Unused) { + return mUser.mStatus; + } + return mDefault.mStatus; +} + +bool FeatureState::SetDefault(bool aEnable, FeatureStatus aDisableStatus, + const char* aDisableMessage) { + if (!aEnable) { + DisableByDefault(aDisableStatus, aDisableMessage, + "FEATURE_FAILURE_DISABLED"_ns); + return false; + } + EnableByDefault(); + return true; +} + +void FeatureState::SetDefaultFromPref(const char* aPrefName, bool aIsEnablePref, + bool aDefaultValue, + Maybe<bool> aUserValue) { + bool baseValue = + Preferences::GetBool(aPrefName, aDefaultValue, PrefValueKind::Default); + SetDefault(baseValue == aIsEnablePref, FeatureStatus::Disabled, + "Disabled by default"); + + if (aUserValue) { + if (*aUserValue == aIsEnablePref) { + nsCString message("Enabled via "); + message.AppendASCII(aPrefName); + UserEnable(message.get()); + } else { + nsCString message("Disabled via "); + message.AppendASCII(aPrefName); + UserDisable(message.get(), "FEATURE_FAILURE_PREF_OFF"_ns); + } + } +} + +void FeatureState::SetDefaultFromPref(const char* aPrefName, bool aIsEnablePref, + bool aDefaultValue) { + Maybe<bool> userValue; + if (Preferences::HasUserValue(aPrefName)) { + userValue.emplace(Preferences::GetBool(aPrefName, aDefaultValue)); + } + + SetDefaultFromPref(aPrefName, aIsEnablePref, aDefaultValue, userValue); +} + +bool FeatureState::InitOrUpdate(bool aEnable, FeatureStatus aDisableStatus, + const char* aDisableMessage) { + if (!IsInitialized()) { + return SetDefault(aEnable, aDisableStatus, aDisableMessage); + } + return MaybeSetFailed(aEnable, aDisableStatus, aDisableMessage, nsCString()); +} + +void FeatureState::UserEnable(const char* aMessage) { + AssertInitialized(); + SetUser(FeatureStatus::Available, aMessage, nsCString()); +} + +void FeatureState::UserForceEnable(const char* aMessage) { + AssertInitialized(); + SetUser(FeatureStatus::ForceEnabled, aMessage, nsCString()); +} + +void FeatureState::UserDisable(const char* aMessage, + const nsACString& aFailureId) { + AssertInitialized(); + SetUser(FeatureStatus::Disabled, aMessage, aFailureId); +} + +void FeatureState::Disable(FeatureStatus aStatus, const char* aMessage, + const nsACString& aFailureId) { + AssertInitialized(); + + // We should never bother setting an environment status to "enabled," since + // it could override an explicit user decision to disable it. + MOZ_ASSERT(IsFeatureStatusFailure(aStatus)); + + SetEnvironment(aStatus, aMessage, aFailureId); +} + +void FeatureState::SetFailed(FeatureStatus aStatus, const char* aMessage, + const nsACString& aFailureId) { + AssertInitialized(); + + // We should never bother setting a runtime status to "enabled," since it + // could override an explicit user decision to disable it. + MOZ_ASSERT(IsFeatureStatusFailure(aStatus)); + + SetRuntime(aStatus, aMessage, aFailureId); +} + +bool FeatureState::MaybeSetFailed(bool aEnable, FeatureStatus aStatus, + const char* aMessage, + const nsACString& aFailureId) { + if (!aEnable) { + SetFailed(aStatus, aMessage, aFailureId); + return false; + } + return true; +} + +bool FeatureState::MaybeSetFailed(FeatureStatus aStatus, const char* aMessage, + const nsACString& aFailureId) { + return MaybeSetFailed(IsFeatureStatusSuccess(aStatus), aStatus, aMessage, + aFailureId); +} + +bool FeatureState::DisabledByDefault() const { + return mDefault.mStatus != FeatureStatus::Available; +} + +bool FeatureState::IsForcedOnByUser() const { + AssertInitialized(); + return mUser.mStatus == FeatureStatus::ForceEnabled; +} + +void FeatureState::EnableByDefault() { + // User/runtime decisions should not have been made yet. + MOZ_ASSERT(!mUser.IsInitialized()); + MOZ_ASSERT(!mEnvironment.IsInitialized()); + MOZ_ASSERT(!mRuntime.IsInitialized()); + + mDefault.Set(FeatureStatus::Available); +} + +void FeatureState::DisableByDefault(FeatureStatus aStatus, const char* aMessage, + const nsACString& aFailureId) { + // User/runtime decisions should not have been made yet. + MOZ_ASSERT(!mUser.IsInitialized()); + MOZ_ASSERT(!mEnvironment.IsInitialized()); + MOZ_ASSERT(!mRuntime.IsInitialized()); + + // Make sure that when disabling we actually use a failure status. + MOZ_ASSERT(IsFeatureStatusFailure(aStatus)); + + mDefault.Set(aStatus, aMessage, aFailureId); +} + +void FeatureState::SetUser(FeatureStatus aStatus, const char* aMessage, + const nsACString& aFailureId) { + // Default decision must have been made, but not runtime or environment. + MOZ_ASSERT(mDefault.IsInitialized()); + MOZ_ASSERT(!mEnvironment.IsInitialized()); + MOZ_ASSERT(!mRuntime.IsInitialized()); + + mUser.Set(aStatus, aMessage, aFailureId); +} + +void FeatureState::SetEnvironment(FeatureStatus aStatus, const char* aMessage, + const nsACString& aFailureId) { + // Default decision must have been made, but not runtime. + MOZ_ASSERT(mDefault.IsInitialized()); + MOZ_ASSERT(!mRuntime.IsInitialized()); + + mEnvironment.Set(aStatus, aMessage, aFailureId); +} + +void FeatureState::SetRuntime(FeatureStatus aStatus, const char* aMessage, + const nsACString& aFailureId) { + AssertInitialized(); + + mRuntime.Set(aStatus, aMessage, aFailureId); +} + +const char* FeatureState::GetRuntimeMessage() const { + MOZ_ASSERT(IsFeatureStatusFailure(mRuntime.mStatus)); + return mRuntime.mMessage; +} + +void FeatureState::ForEachStatusChange( + const StatusIterCallback& aCallback) const { + AssertInitialized(); + + aCallback("default", mDefault.mStatus, mDefault.MessageOrNull(), + mDefault.FailureId()); + if (mUser.IsInitialized()) { + aCallback("user", mUser.mStatus, mUser.Message(), mUser.FailureId()); + } + if (mEnvironment.IsInitialized()) { + aCallback("env", mEnvironment.mStatus, mEnvironment.Message(), + mEnvironment.FailureId()); + } + if (mRuntime.IsInitialized()) { + aCallback("runtime", mRuntime.mStatus, mRuntime.Message(), + mRuntime.FailureId()); + } +} + +const char* FeatureState::GetFailureMessage() const { + AssertInitialized(); + MOZ_ASSERT(!IsEnabled()); + + if (mRuntime.mStatus != FeatureStatus::Unused && + IsFeatureStatusFailure(mRuntime.mStatus)) { + return mRuntime.mMessage; + } + if (mEnvironment.mStatus != FeatureStatus::Unused && + IsFeatureStatusFailure(mEnvironment.mStatus)) { + return mEnvironment.mMessage; + } + if (mUser.mStatus != FeatureStatus::Unused && + IsFeatureStatusFailure(mUser.mStatus)) { + return mUser.mMessage; + } + + MOZ_ASSERT(IsFeatureStatusFailure(mDefault.mStatus)); + return mDefault.mMessage; +} + +const nsCString& FeatureState::GetFailureId() const { + MOZ_ASSERT(!IsEnabled()); + + if (mRuntime.mStatus != FeatureStatus::Unused) { + return mRuntime.mFailureId; + } + if (mEnvironment.mStatus != FeatureStatus::Unused) { + return mEnvironment.mFailureId; + } + if (mUser.mStatus != FeatureStatus::Unused) { + return mUser.mFailureId; + } + + return mDefault.mFailureId; +} + +nsCString FeatureState::GetStatusAndFailureIdString() const { + nsCString status; + auto value = GetValue(); + switch (value) { + case FeatureStatus::Blocklisted: + case FeatureStatus::Disabled: + case FeatureStatus::Unavailable: + case FeatureStatus::UnavailableNoAngle: + case FeatureStatus::Blocked: + status.AppendPrintf("%s:%s", FeatureStatusToString(value), + GetFailureId().get()); + break; + default: + status.Append(FeatureStatusToString(value)); + break; + } + + return status; +} + +void FeatureState::Reset() { + mDefault.Set(FeatureStatus::Unused); + mUser.Set(FeatureStatus::Unused); + mEnvironment.Set(FeatureStatus::Unused); + mRuntime.Set(FeatureStatus::Unused); +} + +void FeatureState::Instance::Set(FeatureStatus aStatus) { + mStatus = aStatus; + mMessage[0] = '\0'; + mFailureId.Truncate(); +} + +void FeatureState::Instance::Set(FeatureStatus aStatus, const char* aMessage, + const nsACString& aFailureId) { + mStatus = aStatus; + if (aMessage) { + SprintfLiteral(mMessage, "%s", aMessage); + } else { + mMessage[0] = '\0'; + } + mFailureId.Assign(aFailureId); +} + +} // namespace gfx +} // namespace mozilla |