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// Copyright (c) 2013 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.
//
// An object to store user feedback to spellcheck suggestions from spelling
// service.
//
// Stores feedback for the spelling service in |Misspelling| objects. Each
// |Misspelling| object is identified by a |hash| and corresponds to a document
// marker with the same |hash| identifier in the renderer.
#ifndef CHROME_BROWSER_SPELLCHECKER_FEEDBACK_H_
#define CHROME_BROWSER_SPELLCHECKER_FEEDBACK_H_
#include <map>
#include <set>
#include <vector>
#include "chrome/browser/spellchecker/misspelling.h"
namespace spellcheck {
// Stores user feedback to spellcheck suggestions. Sample usage:
// Feedback feedback;
// feedback.AddMisspelling(renderer_process_id, Misspelling(
// ASCIIToUTF16("Helllo world"), 0, 6, std::vector<string16>(),
// GenerateRandomHash()));
// feedback.FinalizeRemovedMisspellings(renderer_process_id,
// std::vector<uint32>());
// ProcessFeedback(feedback.GetMisspellingsInRenderer(renderer_process_id));
// feedback.EraseFinalizedMisspellings(renderer_process_id);
class Feedback {
public:
Feedback();
~Feedback();
// Returns the misspelling identified by |hash|. Returns NULL if there's no
// misspelling identified by |hash|. Retains the ownership of the result. The
// caller should not modify the hash in the returned misspelling.
Misspelling* GetMisspelling(uint32 hash);
// Finalizes the user actions on misspellings that are removed from the
// renderer process with ID |renderer_process_id|.
void FinalizeRemovedMisspellings(
int renderer_process_id,
const std::vector<uint32>& remaining_markers);
// Returns true if the renderer with process ID |renderer_process_id| has
// misspellings.
bool RendererHasMisspellings(int renderer_process_id) const;
// Returns a copy of the misspellings in renderer with process ID
// |renderer_process_id|.
std::vector<Misspelling> GetMisspellingsInRenderer(
int renderer_process_id) const;
// Erases the misspellings with final user actions in the renderer with
// process ID |renderer_process_id|.
void EraseFinalizedMisspellings(int renderer_process_id);
// Returns true if there's a misspelling with |hash| identifier.
bool HasMisspelling(uint32 hash) const;
// Adds the |misspelling| to feedback data. If the |misspelling| has a
// duplicate hash, then replaces the existing misspelling with the same hash.
void AddMisspelling(int renderer_process_id, const Misspelling& misspelling);
// Returns true if there're no misspellings.
bool Empty() const;
// Returns a list of process identifiers for renderers that have misspellings.
std::vector<int> GetRendersWithMisspellings() const;
// Finalizes all misspellings.
void FinalizeAllMisspellings();
// Returns a copy of all misspellings.
std::vector<Misspelling> GetAllMisspellings() const;
// Removes all misspellings.
void Clear();
// Returns a list of all misspelling identifiers for |misspelled_text|.
const std::set<uint32>& FindMisspellings(
const string16& misspelled_text) const;
private:
typedef std::map<uint32, Misspelling> HashMisspellingMap;
typedef std::set<uint32> HashCollection;
typedef std::map<int, HashCollection> RendererHashesMap;
typedef std::map<string16, HashCollection> TextHashesMap;
// An empty hash collection to return when FindMisspellings() does not find
// misspellings.
const HashCollection empty_hash_collection_;
// A map of hashes that identify document markers to feedback data to be sent
// to spelling service.
HashMisspellingMap misspellings_;
// A map of renderer process ID to hashes that identify misspellings.
RendererHashesMap renderers_;
// A map of misspelled text to hashes that identify misspellings.
TextHashesMap text_;
DISALLOW_COPY_AND_ASSIGN(Feedback);
};
} // namespace spellcheck
#endif // CHROME_BROWSER_SPELLCHECKER_FEEDBACK_H_
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