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      1 /*
      2  * Copyright (C) 2006 Apple Computer, 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 COMPUTER, 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 COMPUTER, 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 #include "config.h"
     27 #include "IconDatabase.h"
     28 
     29 #if !ENABLE(ICONDATABASE)
     30 
     31 #include "PlatformString.h"
     32 #include "SharedBuffer.h"
     33 #include <wtf/StdLibExtras.h>
     34 
     35 namespace WebCore {
     36 
     37 static IconDatabase* sharedIconDatabase = 0;
     38 
     39 // This version number is in the DB and marks the current generation of the schema
     40 // Theoretically once the switch is flipped this should never change
     41 // Currently, an out-of-date schema causes the DB to be wiped and reset.  This isn't
     42 // so bad during development but in the future, we would need to write a conversion
     43 // function to advance older released schemas to "current"
     44 const int currentDatabaseVersion = 5;
     45 
     46 // Icons expire once a day
     47 const int iconExpirationTime = 60*60*24;
     48 // Absent icons are rechecked once a week
     49 const int missingIconExpirationTime = 60*60*24*7;
     50 
     51 const int updateTimerDelay = 5;
     52 
     53 String IconDatabase::defaultDatabaseFilename()
     54 {
     55     DEFINE_STATIC_LOCAL(String, defaultDatabaseFilename, ("Icons.db"));
     56     return defaultDatabaseFilename.threadsafeCopy();
     57 }
     58 
     59 IconDatabase* iconDatabase()
     60 {
     61     if (!sharedIconDatabase)
     62         sharedIconDatabase = new IconDatabase;
     63     return sharedIconDatabase;
     64 }
     65 
     66 IconDatabase::IconDatabase()
     67 {
     68 }
     69 
     70 bool IconDatabase::open(const String& /*databasePath*/)
     71 {
     72     return false;
     73 }
     74 
     75 bool IconDatabase::isOpen() const
     76 {
     77     return false;
     78 }
     79 
     80 void IconDatabase::close()
     81 {
     82 }
     83 
     84 String IconDatabase::databasePath() const
     85 {
     86     return String();
     87 }
     88 
     89 void IconDatabase::removeAllIcons()
     90 {
     91 }
     92 
     93 void IconDatabase::setPrivateBrowsingEnabled(bool /*flag*/)
     94 {
     95 }
     96 
     97 bool IconDatabase::isPrivateBrowsingEnabled() const
     98 {
     99     return false;
    100 }
    101 
    102 void IconDatabase::readIconForPageURLFromDisk(const String&)
    103 {
    104 
    105 }
    106 
    107 Image* IconDatabase::iconForPageURL(const String& /*pageURL*/, const IntSize& size)
    108 {
    109     return defaultIcon(size);
    110 }
    111 
    112 
    113 IconLoadDecision IconDatabase::loadDecisionForIconURL(const String&, DocumentLoader*)
    114 {
    115     return IconLoadNo;
    116 }
    117 
    118 bool IconDatabase::iconDataKnownForIconURL(const String&)
    119 {
    120     return false;
    121 }
    122 
    123 String IconDatabase::iconURLForPageURL(const String& /*pageURL*/)
    124 {
    125     return String();
    126 }
    127 
    128 Image* IconDatabase::defaultIcon(const IntSize& /*size*/)
    129 {
    130     return 0;
    131 }
    132 
    133 void IconDatabase::retainIconForPageURL(const String& /*pageURL*/)
    134 {
    135 }
    136 
    137 void IconDatabase::releaseIconForPageURL(const String& /*pageURL*/)
    138 {
    139 }
    140 
    141 void IconDatabase::setIconDataForIconURL(PassRefPtr<SharedBuffer> /*data*/, const String& /*iconURL*/)
    142 {
    143 }
    144 
    145 void IconDatabase::setIconURLForPageURL(const String& /*iconURL*/, const String& /*pageURL*/)
    146 {
    147 }
    148 
    149 void IconDatabase::setEnabled(bool /*enabled*/)
    150 {
    151 }
    152 
    153 bool IconDatabase::isEnabled() const
    154 {
    155     return false;
    156 }
    157 
    158 IconDatabase::~IconDatabase()
    159 {
    160     ASSERT_NOT_REACHED();
    161 }
    162 
    163 void IconDatabase::checkIntegrityBeforeOpening()
    164 {
    165 }
    166 
    167 void IconDatabase::delayDatabaseCleanup()
    168 {
    169 }
    170 
    171 void IconDatabase::allowDatabaseCleanup()
    172 {
    173 }
    174 
    175 size_t IconDatabase::pageURLMappingCount()
    176 {
    177     return 0;
    178 }
    179 
    180 size_t IconDatabase::retainedPageURLCount()
    181 {
    182     return 0;
    183 }
    184 
    185 size_t IconDatabase::iconRecordCount()
    186 {
    187     return 0;
    188 }
    189 
    190 size_t IconDatabase::iconRecordCountWithData()
    191 {
    192     return 0;
    193 }
    194 
    195 void IconDatabase::setClient(IconDatabaseClient*)
    196 {
    197 }
    198 
    199 // ************************
    200 // *** Sync Thread Only ***
    201 // ************************
    202 
    203 void IconDatabase::importIconURLForPageURL(const String&, const String&)
    204 {
    205 }
    206 
    207 void IconDatabase::importIconDataForIconURL(PassRefPtr<SharedBuffer>, const String&)
    208 {
    209 }
    210 
    211 bool IconDatabase::shouldStopThreadActivity() const
    212 {
    213     return true;
    214 }
    215 
    216 } // namespace WebCore
    217 
    218 #endif // !ENABLE(ICONDATABASE)
    219