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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_WEB_TEST_RENDERER_WEB_TEST_SPELL_CHECKER_H_
#define CONTENT_WEB_TEST_RENDERER_WEB_TEST_SPELL_CHECKER_H_
#include <vector>
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/web/web_text_checking_result.h"
namespace content {
// A spell-checker used for web tests. This class only implements the minimal
// functionalities required by web tests, i.e. this class just compares the
// given string with known misspelled words in web tests and mark them as
// misspelled. Even though this is sufficient for web tests, this class is not
// suitable for any other usages.
class WebTestSpellChecker {
public:
static void FillSuggestionList(const blink::WebString& word,
std::vector<blink::WebString>* suggestions);
WebTestSpellChecker();
~WebTestSpellChecker();
WebTestSpellChecker(const WebTestSpellChecker&) = delete;
WebTestSpellChecker& operator=(const WebTestSpellChecker&) = delete;
// Checks the spellings of the specified text.
// This function returns true if the text consists of valid words, and
// returns false if it includes invalid words.
// When the given text includes invalid words, this function sets the
// position of the first invalid word to misspelledOffset, and the length of
// the first invalid word to misspelledLength, respectively.
// For example, when the given text is " zz zz", this function sets 3 to
// misspelledOffset and 2 to misspelledLength, respectively.
bool SpellCheckWord(const blink::WebString& text,
size_t* misspelled_offset,
size_t* misspelled_length);
// Checks whether the specified text can be spell checked immediately using
// the spell checker cache.
bool HasInCache(const blink::WebString& text);
// Checks whether the specified text is a misspelling comprised of more
// than one word. If it is, append multiple results to the results vector.
bool IsMultiWordMisspelling(
const blink::WebString& text,
std::vector<blink::WebTextCheckingResult>* results);
private:
// Initialize the internal resources if we need to initialize it.
// Initializing this object may take long time. To prevent from hurting
// the performance of test_shell, we initialize this object when
// SpellCheckWord() is called for the first time.
// To be compliant with SpellCheck:InitializeIfNeeded(), this function
// returns true if this object is downloading a dictionary, otherwise
// it returns false.
bool InitializeIfNeeded();
// A table that consists of misspelled words.
std::vector<std::u16string> misspelled_words_;
// A flag representing whether or not this object is initialized.
bool initialized_ = false;
};
} // namespace content
#endif // CONTENT_WEB_TEST_RENDERER_WEB_TEST_SPELL_CHECKER_H_
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