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1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: VideoDeleteWorker class implementation |
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15 * |
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16 */ |
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17 // INCLUDE FILES |
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18 |
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19 #include <qtimer.h> |
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20 #include "videocollectioncommon.h" |
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21 #include "videocollectionclient.h" |
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22 #include "videodeleteworker.h" |
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23 |
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24 |
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25 |
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26 // ================= MEMBER FUNCTIONS ======================= |
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27 // |
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28 |
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29 /** |
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30 * private global inline hash function for TMPXItemId keys in QSet |
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31 */ |
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32 inline uint qHash(TMPXItemId key) |
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33 { |
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34 QPair<uint, uint> keyPair(key.iId1, key.iId2); |
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35 |
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36 return qHash(keyPair); |
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37 } |
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38 |
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39 // ----------------------------------------------------------------------------- |
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40 // VideoDeleteWorker() |
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41 // ----------------------------------------------------------------------------- |
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42 // |
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43 VideoDeleteWorker::VideoDeleteWorker(VideoCollectionClient &collection, QObject *parent) : |
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44 QObject(parent), |
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45 mCollectionClient(collection), |
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46 mRequestWaitTimer(0), |
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47 mLastStatus(0), |
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48 mLastStatusData(QVariant()) |
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49 { |
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50 |
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51 } |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // ~VideoDeleteWorker() |
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55 // ----------------------------------------------------------------------------- |
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56 // |
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57 VideoDeleteWorker::~VideoDeleteWorker() |
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58 { |
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59 if(mRequestWaitTimer && mRequestWaitTimer->isActive()) |
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60 { |
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61 mRequestWaitTimer->stop(); |
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62 } |
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63 // if we're still doing some background deletion, |
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64 // dump all deletes to collection and stop timer |
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65 flushAll(); |
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66 } |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // requestDelete() |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 void VideoDeleteWorker::requestDelete(const QList<TMPXItemId> &indexList) |
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73 { |
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74 if(!mRequestWaitTimer) |
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75 { |
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76 mRequestWaitTimer = new QTimer(); |
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77 connect(mRequestWaitTimer, SIGNAL(timeout()), this, SLOT(execDeleteBlockSlot())); |
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78 } |
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79 |
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80 mRemoveBuffer.unite(QSet<TMPXItemId>::fromList(indexList)); |
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81 |
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82 if(!mRequestWaitTimer->isActive()) |
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83 { |
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84 // first startup throught zero timer, after that |
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85 // deletion is chained. Next delete block starts from |
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86 // modelChangedSlot |
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87 mRequestWaitTimer->setSingleShot(true); |
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88 mRequestWaitTimer->start(0); |
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89 } |
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90 } |
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91 |
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92 // ----------------------------------------------------------------------------- |
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93 // removeFromRequest() |
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94 // ----------------------------------------------------------------------------- |
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95 // |
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96 int VideoDeleteWorker::removeFromRequest(TMPXItemId &itemId) |
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97 { |
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98 mRemoveBuffer.remove(itemId); |
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99 return mRemoveBuffer.count(); |
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100 } |
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101 |
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102 // ----------------------------------------------------------------------------- |
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103 // isDeleting() |
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104 // ----------------------------------------------------------------------------- |
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105 // |
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106 bool VideoDeleteWorker::isDeleting() |
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107 { |
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108 return mRemoveBuffer.count() ? true : false; |
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109 } |
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110 |
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111 // ----------------------------------------------------------------------------- |
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112 // updateStatus() |
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113 // ----------------------------------------------------------------------------- |
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114 // |
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115 void VideoDeleteWorker::updateStatus(int status, QVariant data) |
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116 { |
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117 // do not update invalid status |
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118 if(status != VideoCollectionCommon::statusDeleteSucceed && |
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119 status != VideoCollectionCommon::statusSingleDeleteFail && |
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120 status != VideoCollectionCommon::statusMultipleDeleteFail) |
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121 { |
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122 return; |
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123 } |
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124 |
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125 if(!mLastStatus || mLastStatus == VideoCollectionCommon::statusDeleteSucceed) |
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126 { |
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127 mLastStatus = status; |
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128 mLastStatusData = data; |
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129 return; |
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130 } |
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131 if(status == VideoCollectionCommon::statusDeleteSucceed) |
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132 { |
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133 return; |
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134 } |
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135 int count = 0; |
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136 if(mLastStatus == VideoCollectionCommon::statusSingleDeleteFail) |
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137 { |
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138 // old status was single fail |
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139 mLastStatus = VideoCollectionCommon::statusMultipleDeleteFail; |
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140 count = 2; |
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141 if(status == VideoCollectionCommon::statusMultipleDeleteFail) |
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142 { |
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143 count = data.toInt() + 1; |
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144 } |
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145 // count of failed is now 2 |
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146 mLastStatusData = count; |
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147 return; |
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148 } |
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149 // all other cases mean multi |
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150 count = data.toInt(); |
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151 mLastStatus = VideoCollectionCommon::statusMultipleDeleteFail; |
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152 count ? mLastStatusData = mLastStatusData.toInt() + count : |
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153 mLastStatusData = mLastStatusData.toInt() + 1; |
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154 } |
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155 |
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156 // ----------------------------------------------------------------------------- |
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157 // getStatus() |
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158 // ----------------------------------------------------------------------------- |
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159 // |
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160 int VideoDeleteWorker::getLastStatus(QVariant &data) |
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161 { |
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162 data = mLastStatusData; |
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163 return mLastStatus; |
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164 } |
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165 |
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166 // ----------------------------------------------------------------------------- |
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167 // clearStatus() |
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168 // ----------------------------------------------------------------------------- |
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169 // |
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170 void VideoDeleteWorker::clearStatus() |
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171 { |
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172 mLastStatus = 0; |
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173 mLastStatusData = QVariant(); |
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174 } |
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175 |
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176 // ----------------------------------------------------------------------------- |
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177 // continueSlot() |
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178 // ----------------------------------------------------------------------------- |
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179 // |
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180 void VideoDeleteWorker::continueSlot() |
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181 { |
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182 if(!mRequestWaitTimer || !mRemoveBuffer.count()) |
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183 { |
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184 return; |
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185 } |
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186 if(!mRequestWaitTimer->isActive()) |
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187 { |
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188 mRequestWaitTimer->setSingleShot(true); |
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189 mRequestWaitTimer->start(0); |
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190 } |
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191 } |
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192 |
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193 // ----------------------------------------------------------------------------- |
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194 // doBackgroundDeleteSlot() |
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195 // ----------------------------------------------------------------------------- |
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196 // |
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197 void VideoDeleteWorker::execDeleteBlockSlot() |
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198 { |
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199 if(!mRemoveBuffer.count()) |
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200 { |
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201 return; |
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202 } |
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203 QList<TMPXItemId> deleteBlock; |
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204 |
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205 // create block of max 3 items |
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206 int counter = 0; |
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207 QSet<TMPXItemId>::iterator iter = mRemoveBuffer.begin(); |
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208 while(iter != mRemoveBuffer.end() && counter < 3) |
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209 { |
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210 deleteBlock.append((*iter)); |
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211 iter = mRemoveBuffer.erase(iter); |
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212 counter++; |
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213 } |
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214 |
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215 // need to handle errors somehow |
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216 if(mCollectionClient.deleteVideos(&deleteBlock) != 0) |
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217 { |
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218 // signal block delete startup failed |
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219 emit deleteStartupFailed(deleteBlock); |
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220 } |
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221 } |
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222 |
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223 // ----------------------------------------------------------------------------- |
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224 // flushAll() |
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225 // ----------------------------------------------------------------------------- |
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226 // |
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227 void VideoDeleteWorker::flushAll() |
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228 { |
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229 if(!mRemoveBuffer.count()) |
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230 { |
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231 return; |
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232 } |
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233 QList<TMPXItemId> ids = mRemoveBuffer.toList(); |
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234 mCollectionClient.deleteVideos(&ids); |
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235 mRemoveBuffer.clear(); |
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236 } |
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237 |
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238 |
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239 |
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240 // End of file |