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annotate libgui/src/find-files-model.cc @ 16997:90d50e56a06a

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Add sortable table headers to find_files_dialog results * libgui/src/find-files-dialog.cc (find_files_dialog::find_files_dialog): enable sorting of rows in _file_list. * libgui/src/find-files-model.cc, libgui/src/find-files-model.h (global): New local class find_file_less_than. (find_files_model::find_files_model): Add/initialize _sortorder var. (find_files_model::addFile): Find pos to add data to sorted entries. (find_files_model::sort): New function.
author John Donoghue <john.donoghue@ieee.org>
date Wed, 17 Jul 2013 21:42:11 -0400
parents 3e8fd0c479b4
children 15e2ad6372f7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 2013 John Donoghue
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #include "find-files-model.h"
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24 #include <QFileIconProvider>
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25 #include <QtAlgorithms>
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26
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27 class find_file_less_than
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28 {
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29 public:
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30 find_file_less_than (int ord)
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31 {
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32 _sortorder = ord;
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33 }
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34 QVariant getValue (const QFileInfo &f) const
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35 {
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36 QVariant val;
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37 int col = (_sortorder > 0) ? _sortorder : -_sortorder;
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38
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39 switch (col-1)
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40 {
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41 case 0:
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42 val = QVariant (f.fileName());
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43 break;
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44
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45 case 1:
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46 val = QVariant (f.absolutePath());
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47 break;
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48
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49 default:
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50 break;
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51 }
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52 return val;
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53 }
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54 bool lessThan (const QVariant &left, const QVariant &right) const
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55 {
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56 return left.toString ().compare (right.toString (), Qt::CaseInsensitive) < 0;
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57 }
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58 bool operator () (const QFileInfo &left, const QFileInfo &right) const
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59 {
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60 QVariant leftval = getValue(left);
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61 QVariant rightval = getValue(right);
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62
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63 if (_sortorder > 0)
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64 return lessThan(leftval, rightval);
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65 else
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66 return ! lessThan(leftval, rightval);
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67 }
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68 private:
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69 int _sortorder;
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70 };
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71
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72
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73 find_files_model::find_files_model (QObject *p)
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74 : QAbstractListModel(p)
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75 {
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76 _columnNames.append (tr ("Filename"));
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77 _columnNames.append (tr ("Directory"));
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78 _sortorder = 0;
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79 }
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80
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81 find_files_model::~find_files_model ()
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82 {
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83 }
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84
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85 void
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86 find_files_model::clear ()
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87 {
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88 beginResetModel();
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89
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90 _files.clear();
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91
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92 endResetModel ();
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93 }
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94
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95 void
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96 find_files_model::addFile (const QFileInfo &info)
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97 {
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98 beginInsertRows (QModelIndex (), _files.size (), _files.size () );
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99
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100 QList<QFileInfo>::Iterator it;
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101 find_file_less_than less_than(_sortorder);
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102
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103 for (it=_files.begin ();it!=_files.end ();it++)
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104 {
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105 if (less_than (info, *it)) break;
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106 }
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107
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108 _files.insert (it, info);
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109
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110 endInsertRows ();
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111 }
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112
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113 int
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114 find_files_model::rowCount (const QModelIndex & p) const
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115 {
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116 return _files.size();
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117 }
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118
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119 int
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120 find_files_model::columnCount (const QModelIndex & p) const
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121 {
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122 return _columnNames.size ();
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123 }
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124
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125 QVariant
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126 find_files_model::data (const QModelIndex& idx, int role) const
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127 {
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128 QVariant retval;
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129
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130 if (idx.isValid ())
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131 {
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132 if(role == Qt::DisplayRole)
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133 {
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134 switch (idx.column ())
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135 {
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136 case 0:
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137 retval = QVariant (_files[idx.row()].fileName());
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138 break;
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139
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140 case 1:
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141 retval = QVariant (_files[idx.row()].absolutePath());
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142 break;
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143
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144 default:
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145 break;
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146 }
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147 }
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148 else if(role == Qt:: DecorationRole)
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149 {
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150 switch (idx.column())
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151 {
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152 case 0:
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153 retval = fileIcon(idx);
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154 default:
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155 break;
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parents:
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156 }
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parents:
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157 }
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parents:
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158 }
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159
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160 return retval;
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161 }
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162
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163 QVariant
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164 find_files_model::headerData (int section, Qt::Orientation orientation, int role) const
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165 {
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166 if (orientation == Qt::Horizontal && role == Qt::DisplayRole)
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167 return _columnNames[section];
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168 else
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169 return QVariant ();
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170 }
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171
16997
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John Donoghue <john.donoghue@ieee.org>
parents: 16519
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172 void
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diff changeset
173 find_files_model::sort (int column, Qt::SortOrder order)
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parents: 16519
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174 {
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parents: 16519
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175 if(column >= 0)
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parents: 16519
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176 {
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parents: 16519
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177 if (order == Qt::DescendingOrder)
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178 _sortorder = -(column+1);
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179 else
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180 _sortorder = column+1;
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181 }
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182 else
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183 _sortorder = 0;
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184
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185 if (_sortorder != 0)
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diff changeset
186 {
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187 beginResetModel ();
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188 qSort (_files.begin (), _files.end (), find_file_less_than (_sortorder));
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diff changeset
189 endResetModel ();
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John Donoghue <john.donoghue@ieee.org>
parents: 16519
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190 }
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John Donoghue <john.donoghue@ieee.org>
parents: 16519
diff changeset
191 }
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John Donoghue <john.donoghue@ieee.org>
parents: 16519
diff changeset
192
16519
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
193 QFileInfo
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194 find_files_model::fileInfo (const QModelIndex & p) const
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parents:
diff changeset
195 {
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
196 if(p.isValid ())
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
197 {
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parents:
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198 return _files[p.row()];
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parents:
diff changeset
199 }
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parents:
diff changeset
200 return QFileInfo ();
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
201 }
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
202
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
203 QIcon
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
204 find_files_model::fileIcon (const QModelIndex &p) const
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
205 {
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
206 QFileIconProvider icon_provider;
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
207 if(p.isValid ())
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
208 {
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
209 return icon_provider.icon (_files[p.row()]);
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
210 }
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
211 return QIcon ();
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John Donoghue <john.donoghue@ieee.org>
parents:
diff changeset
212 }