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+/*
+ * Copyright (C) 2010 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#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);
+
+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<WebCore::String, bool> m_misspelledWords;
+
+    // A flag representing whether or not this object is initialized.
+    bool m_initialized;
+};
+
+#endif // MockSpellCheck_h