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// Copyright 2016 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.
#ifndef CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_FIELD_TRIAL_H_
#define CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_FIELD_TRIAL_H_
#include <stddef.h>
#include "base/values.h"
// This class manages the Contextual Search native field trials.
class ContextualSearchFieldTrial {
public:
ContextualSearchFieldTrial();
~ContextualSearchFieldTrial();
// Returns a partial URL to use for a Contextual Search Resolve request, or
// an empty string if no override is required. The returned value is a prefix
// of a URL -- from the beginning up through the GWS end-point in the path,
// which consists of the authority and the beginning of the path.
std::string GetResolverURLPrefix();
// Gets the size of the surrounding text to return for normal Resolve requests
// when a Contextual Search is being performed.
int GetSurroundingSize();
// Gets the size of the surrounding text to return for Icing when a Contextual
// Search is being performed.
int GetIcingSurroundingSize();
// Gets whether sending the URL of the base page is disabled.
bool IsSendBasePageURLDisabled();
// Gets whether decoding the mentions fields in the Resolve is disabled.
bool IsDecodeMentionsDisabled();
// Disables the cache.
void DisableCache();
// Constant used in tests.
static const int kContextualSearchDefaultIcingSurroundingSize;
protected:
// Checks if command-line switch of the given name exists.
virtual bool HasSwitch(const std::string& name);
// Gets a command-line switch of the given name, returns the empty string
// if the switch does not exist.
virtual std::string GetSwitch(const std::string& name);
// Gets a Variation parameter by the given name.
virtual std::string GetParam(const std::string& name);
private:
// Gets a boolean param value of the given name from the Contextual Search
// field trial. Default is false if no param is present.
bool GetBooleanParam(const std::string& param_name,
bool* is_value_cached,
bool* cached_value);
// Gets an int param value of the given name from the Contextual Search
// field trial. Returns the |default_value| if no switch or param is present.
// Caches the result pointed to by the given |cached_value|, using the given
// |is_value_cached| to remember if the value has been cached or not.
int GetIntParamValueOrDefault(const std::string& param_name,
const int default_value,
bool* is_value_cached,
int* cached_value);
// Cached values.
bool is_resolver_url_prefix_cached_;
std::string resolver_url_prefix_;
bool is_surrounding_size_cached_;
int surrounding_size_;
bool is_icing_surrounding_size_cached_;
int icing_surrounding_size_;
bool is_send_base_page_url_disabled_cached_;
bool is_send_base_page_url_disabled_;
bool is_decode_mentions_disabled_cached_;
bool is_decode_mentions_disabled_;
DISALLOW_COPY_AND_ASSIGN(ContextualSearchFieldTrial);
};
#endif // CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_FIELD_TRIAL_H_
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