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// Copyright (c) 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/common/content_switches_internal.h"
#include <string>
#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/metrics/field_trial.h"
#include "build/build_config.h"
#include "content/public/common/content_switches.h"
#if defined(OS_WIN)
#include "base/win/windows_version.h"
#endif
namespace content {
namespace {
#if defined(OS_WIN)
const base::Feature kUseZoomForDsfEnabledByDefault {
"use-zoom-for-dsf enabled by default", base::FEATURE_ENABLED_BY_DEFAULT
};
#endif
bool IsUseZoomForDSFEnabledByDefault() {
#if defined(OS_CHROMEOS) || defined(OS_LINUX)
return true;
#elif defined(OS_WIN)
return base::FeatureList::IsEnabled(kUseZoomForDsfEnabledByDefault);
#else
return false;
#endif
}
#if defined(ANDROID)
const base::Feature kProgressBarCompletionResourcesBeforeDOMContentLoaded {
"progress-bar-completion-resources-before-domContentLoaded",
base::FEATURE_DISABLED_BY_DEFAULT};
#endif
} // namespace
bool IsPinchToZoomEnabled() {
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
// Enable pinch everywhere unless it's been explicitly disabled.
return !command_line.HasSwitch(switches::kDisablePinch);
}
#if defined(OS_WIN)
bool IsWin32kLockdownEnabled() {
if (base::win::GetVersion() < base::win::VERSION_WIN8)
return false;
const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
if (cmd_line->HasSwitch(switches::kDisableWin32kLockDown))
return false;
return true;
}
#endif
V8CacheOptions GetV8CacheOptions() {
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
std::string v8_cache_options =
command_line.GetSwitchValueASCII(switches::kV8CacheOptions);
if (v8_cache_options.empty())
v8_cache_options = base::FieldTrialList::FindFullName("V8CacheOptions");
if (v8_cache_options == "none") {
return V8_CACHE_OPTIONS_NONE;
} else if (v8_cache_options == "parse") {
return V8_CACHE_OPTIONS_PARSE;
} else if (v8_cache_options == "code") {
return V8_CACHE_OPTIONS_CODE;
} else {
return V8_CACHE_OPTIONS_DEFAULT;
}
}
bool IsUseZoomForDSFEnabled() {
static bool use_zoom_for_dsf_enabled_by_default =
IsUseZoomForDSFEnabledByDefault();
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
bool enabled =
(command_line->HasSwitch(switches::kEnableUseZoomForDSF) ||
use_zoom_for_dsf_enabled_by_default) &&
command_line->GetSwitchValueASCII(
switches::kEnableUseZoomForDSF) != "false";
return enabled;
}
ProgressBarCompletion GetProgressBarCompletionPolicy() {
#if defined(OS_ANDROID)
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
std::string progress_bar_completion =
command_line.GetSwitchValueASCII(switches::kProgressBarCompletion);
if (progress_bar_completion == "loadEvent")
return ProgressBarCompletion::LOAD_EVENT;
if (progress_bar_completion == "resourcesBeforeDOMContentLoaded")
return ProgressBarCompletion::RESOURCES_BEFORE_DCL;
if (progress_bar_completion == "domContentLoaded")
return ProgressBarCompletion::DOM_CONTENT_LOADED;
if (progress_bar_completion ==
"resourcesBeforeDOMContentLoadedAndSameOriginIframes") {
return ProgressBarCompletion::RESOURCES_BEFORE_DCL_AND_SAME_ORIGIN_IFRAMES;
}
// The command line, which is set by the user, takes priority. Otherwise,
// fall back to the feature flag.
if (base::FeatureList::IsEnabled(
kProgressBarCompletionResourcesBeforeDOMContentLoaded)) {
return ProgressBarCompletion::RESOURCES_BEFORE_DCL;
}
#endif
return ProgressBarCompletion::LOAD_EVENT;
}
} // namespace content
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