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// Copyright 2015 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 <set>
#include <string>
#include "base/macros.h"
namespace fake_server {
class SessionsHierarchy;
// A representation of the Sync Sessions hierarchy (windows and the URLs of
// their tabs).
class SessionsHierarchy {
// Creates an empty (no windows) SessionsHierachy.
// Add a window to the builder with one tab.
void AddWindow(const std::string& tab);
// Add a window to the builder with multiple tabs.
void AddWindow(const std::multiset<std::string>& tabs);
// Creates and returns a human-readable string version of this object's data.
std::string ToString() const;
// Returns true when this object and |other| have equivalent data.
// Two SessionHierarchy objects A and B have equivalent data iff:
// 1) A and B contain the same number of Windows, and
// 2) Each Window of A is equal (as a multiset) to exactly one Window of B
// (and vice versa).
// Examples of equivalent hierarchies:
// {} and {}, {{X}} and {{X}}, {{X,Y}} and {{Y,X}}, {{X},{Y}} and {{Y},{X}}
// Examples of nonequivalent hierarchies:
// {{X}} and {{Y}}, {{X}} and {{X,X}}, {{X}} and {{X},{X}}
bool Equals(const SessionsHierarchy& other) const;
// A collection of tab URLs.
typedef std::multiset<std::string> Window;
// A collection of Windows (an instance of this collection represents a
// sessions hierarchy).
typedef std::multiset<Window> WindowContainer;
// The windows of the sessions hierarchy.
WindowContainer windows_;
} // namespace fake_server