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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/themes/theme_color_policy_handler.h"
#include "base/strings/string_number_conversions.h"
#include "base/values.h"
#include "build/build_config.h"
#include "components/policy/core/browser/policy_error_map.h"
#include "components/policy/policy_constants.h"
#include "components/prefs/pref_value_map.h"
#include "components/strings/grit/components_strings.h"
#include "components/themes/pref_names.h"
#include "third_party/re2/src/re2/re2.h"
#include "third_party/skia/include/core/SkColor.h"
namespace {
// Check if the given string is a valid hex color.
bool IsValidHexColor(const std::string& input) {
// A valid hex color must be of form "#RRGGBB" ("#" is optional).
// Support for "RGB" may be added in the future.
return RE2::FullMatch(input, "^#?[0-9a-fA-F]{6}$");
}
// Convert valid hex string to corresponding SkColor.
SkColor HexToSkColor(const std::string& hex_color) {
DCHECK(!hex_color.empty());
DCHECK(IsValidHexColor(hex_color));
const int kHexColorLength = 6;
int color;
// A valid hex color may or may not have "#" as the first character.
base::HexStringToInt(
hex_color.substr(hex_color[0] == '#' ? 1 : 0, kHexColorLength), &color);
return SkColorSetA(color, SK_AlphaOPAQUE);
}
} // namespace
ThemeColorPolicyHandler::ThemeColorPolicyHandler()
: TypeCheckingPolicyHandler(policy::key::kBrowserThemeColor,
base::Value::Type::STRING) {}
ThemeColorPolicyHandler::~ThemeColorPolicyHandler() = default;
bool ThemeColorPolicyHandler::CheckPolicySettings(
const policy::PolicyMap& policies,
policy::PolicyErrorMap* errors) {
const base::Value* value = nullptr;
if (!CheckAndGetValue(policies, errors, &value)) {
return false;
}
if (value && !IsValidHexColor(value->GetString())) {
errors->AddError(policy_name(), IDS_POLICY_HEX_COLOR_ERROR,
value->GetString());
return false;
}
return true;
}
void ThemeColorPolicyHandler::ApplyPolicySettings(
const policy::PolicyMap& policies,
PrefValueMap* prefs) {
const base::Value* value =
policies.GetValue(policy_name(), base::Value::Type::STRING);
if (!value) {
return;
}
prefs->SetInteger(themes::prefs::kPolicyThemeColor,
HexToSkColor(value->GetString()));
}
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