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#ifndef MockSpellCheck_h
#define MockSpellCheck_h

#include <wtf/HashMap.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>

namespace WebKit {
class WebString;
}

// A mock implementation of a spell-checker used for WebKit tests.
// This class only implements the minimal functionarities required by WebKit
// tests, i.e. this class just compares the given string with known misspelled
// words in webkit tests and mark them as missspelled.
// Even though this is sufficent for webkit tests, this class is not suitable
// for any other usages.
class MockSpellCheck {
public:
    MockSpellCheck();
    ~MockSpellCheck();

    // 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 WebKit::WebString& text,
                        int* misspelledOffset,
                        int* misspelledLength);

    void fillSuggestionList(const WebKit::WebString& word, Vector<WebKit::WebString>* suggestions);

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.
    HashMap<WTF::String, bool> m_misspelledWords;

    // A flag representing whether or not this object is initialized.
    bool m_initialized;
};

#endif // MockSpellCheck_h
