67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
/*
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* Copyright (C) 2012 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <wtf/MonotonicTime.h>
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#include <wtf/text/StringBuilder.h>
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#include <wtf/text/WTFString.h>
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namespace WebCore {
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class KeyboardEvent;
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class TypeAheadDataSource {
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public:
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virtual ~TypeAheadDataSource() = default;
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virtual int indexOfSelectedOption() const = 0;
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virtual int optionCount() const = 0;
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virtual String optionAtIndex(int index) const = 0;
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};
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class TypeAhead {
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public:
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TypeAhead(TypeAheadDataSource*);
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enum ModeFlag {
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MatchPrefix = 1 << 0,
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CycleFirstChar = 1 << 1,
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MatchIndex = 1 << 2,
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};
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typedef unsigned MatchModeFlags;
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// Returns the index for the matching option.
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int handleEvent(KeyboardEvent*, MatchModeFlags);
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private:
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TypeAheadDataSource* m_dataSource;
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MonotonicTime m_lastTypeTime;
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UChar m_repeatingChar;
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StringBuilder m_buffer;
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};
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} // namespace WebCore
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