1/* 2 * Copyright (C) 2011 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef LocalizedDateCache_h 27#define LocalizedDateCache_h 28 29#include "DateComponents.h" 30#include "Font.h" 31#include <wtf/HashMap.h> 32#include <wtf/NeverDestroyed.h> 33#include <wtf/RetainPtr.h> 34 35// FIXME: Rename this file to LocalizedDataCacheIOS.mm and remove this guard. 36#if PLATFORM(IOS) 37 38namespace WebCore { 39 40class MeasureTextClient { 41public: 42 virtual float measureText(const String&) const = 0; 43 virtual ~MeasureTextClient() { } 44}; 45 46class LocalizedDateCache { 47public: 48 NSDateFormatter *formatterForDateType(DateComponents::Type); 49 float maximumWidthForDateType(DateComponents::Type, const Font&, const MeasureTextClient&); 50 void localeChanged(); 51 52private: 53 LocalizedDateCache(); 54 ~LocalizedDateCache(); 55 56 NSDateFormatter *createFormatterForType(DateComponents::Type); 57 float calculateMaximumWidth(DateComponents::Type, const MeasureTextClient&); 58 59 // Using int instead of DateComponents::Type for the key because the enum 60 // does not have a default hash and hash traits. Usage of the maps 61 // casts the DateComponents::Type into an int as the key. 62 typedef HashMap<int, RetainPtr<NSDateFormatter>> DateTypeFormatterMap; 63 typedef HashMap<int, float> DateTypeMaxWidthMap; 64 DateTypeFormatterMap m_formatterMap; 65 DateTypeMaxWidthMap m_maxWidthMap; 66 Font m_font; 67 68 friend LocalizedDateCache& localizedDateCache(); 69 friend NeverDestroyed<LocalizedDateCache>; 70}; 71 72// Singleton. 73LocalizedDateCache& localizedDateCache(); 74 75} // namespace WebCore 76 77#endif // PLATFORM(IOS) 78#endif // LocalizedDateCache_h 79