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annotate libgui/src/workspace-view.cc @ 16445:3f8d3fc907af

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store workspace model in main_window, not in workspace view * main-window.h, main-window.cc (main_window::_workspace_model): New data member. (main_window::construct): Create _workspace_model and make it the model for _workspace_view. connect _workspace_model::model_changed to _workspace_view::model_changed. (main_window::~main_window): Delete _workspace_model. * workspace-view.h, workspace-view.cc (workspace_view::_workspace_model): Delete. Use model() method to get model where needed. (workspace_view::setModel): New function. (workspace_view::view): Rename from _workspace_tree_view. Change all uses. (workspace_view::workspace_view): Don't connect _workspace_model::model_changed signal to workspace_view::model_changed here.
author John W. Eaton <jwe@octave.org>
date Sat, 06 Apr 2013 14:23:52 -0400
parents 6cd66a5a76e8
children cbc39a3d0c42
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) 2011-2012 Jacob Dawid
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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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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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27 #include "workspace-view.h"
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28 #include "resource-manager.h"
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29 #include <QHeaderView>
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30 #include <QHBoxLayout>
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31 #include <QVBoxLayout>
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32 #include <QPushButton>
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33
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34 workspace_view::workspace_view (QWidget *p)
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35 : QDockWidget (p)
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36 {
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37 setObjectName ("WorkspaceView");
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38 setWindowIcon (QIcon(":/actions/icons/logo.png"));
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39 setWindowTitle (tr ("Workspace"));
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40
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41 view = new QTreeView (this); // Create a new tree view.
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42 view->setHeaderHidden (false); // Do not show header columns.
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43 view->setAlternatingRowColors (true); // Activate alternating row colors.
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44 view->setAnimated (false); // Deactivate animations because of strange glitches.
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45 view->setTextElideMode (Qt::ElideRight);// Elide text to the right side of the cells.
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46 view->setWordWrap (false); // No wordwrapping in cells.
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47
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48 // Set an empty widget, so we can assign a layout to it.
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49 setWidget (new QWidget (this));
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51 // Create a new layout and add widgets to it.
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52 QVBoxLayout *vbox_layout = new QVBoxLayout ();
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53 vbox_layout->addWidget (view);
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54 vbox_layout->setMargin (2);
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56 // Set the empty widget to have our layout.
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57 widget ()->setLayout (vbox_layout);
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58
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59 // Initialize collapse/expand state of the workspace subcategories.
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60
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61 QSettings *settings = resource_manager::get_settings ();
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62
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63 // FIXME -- what should happen if settings is 0?
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64
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65 _explicit_collapse.local = settings->value ("workspaceview/local_collapsed", false).toBool ();
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66 _explicit_collapse.global = settings->value ("workspaceview/global_collapsed", false).toBool ();;
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67 _explicit_collapse.persistent = settings->value ("workspaceview/persistent_collapsed", false).toBool ();;
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68
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69 // Initialize column order and width of the workspace
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70
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71 view->header ()->restoreState (settings->value("workspaceview/column_state").toByteArray ());
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73 // Connect signals and slots.
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74 connect (this, SIGNAL (visibilityChanged (bool)),
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75 this, SLOT(handle_visibility_changed (bool)));
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76
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77 connect (view, SIGNAL (collapsed (QModelIndex)),
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78 this, SLOT (collapse_requested (QModelIndex)));
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79 connect (view, SIGNAL (expanded (QModelIndex)),
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80 this, SLOT (expand_requested (QModelIndex)));
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81
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82 connect (view, SIGNAL (doubleClicked (QModelIndex)),
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83 this, SLOT (item_double_clicked (QModelIndex)));
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84
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85 // topLevelChanged is emitted when floating property changes (floating = true)
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86 connect (this, SIGNAL (topLevelChanged(bool)), this, SLOT(top_level_changed(bool)));
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87
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88 }
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89
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90 workspace_view::~workspace_view ()
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91 {
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92 QSettings *settings = resource_manager::get_settings ();
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93 settings->setValue("workspaceview/local_collapsed", _explicit_collapse.local);
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94 settings->setValue("workspaceview/global_collapsed", _explicit_collapse.global);
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95 settings->setValue("workspaceview/persistent_collapsed", _explicit_collapse.persistent);
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96 settings->setValue("workspaceview/column_state", view->header ()->saveState ());
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97 settings->sync ();
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98 }
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99
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100 void
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101 workspace_view::handle_visibility_changed (bool visible)
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102 {
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103 if (visible)
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104 emit active_changed (true);
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105 }
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106
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107 void
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108 workspace_view::model_changed ()
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109 {
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110 QAbstractItemModel *m = view->model ();
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111
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112 dynamic_cast<workspace_model *> (m)->update_workspace_callback ();
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113
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114 // This code is very quirky and requires some explanation.
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115 // Usually, we should not deal with collapsing or expanding ourselves,
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116 // because the view itself determines (based on the model) whether it
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117 // is appropriate to collapse or expand items.
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118 //
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119 // Now, the logic requires that we update our model item by item, which
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120 // would make it work correctly, but this is extremely slow and scales
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121 // very bad (O(n^2)). That's why we throw away our model and rebuild it
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122 // completely from scratch (O(n)), which is why the view renders all
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123 // displayed data as invalid.
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124 //
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125 // In order to make collapsing/expanding work again, we need to set
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126 // flags ourselves here.
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127
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128 QModelIndex local_model_index = m->index (0, 0);
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129 QModelIndex global_model_index = m->index (1, 0);
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130 QModelIndex persistent_model_index = m->index (2, 0);
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131
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132 if (_explicit_collapse.local) {
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133 view->collapse (local_model_index);
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134 } else {
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135 view->expand (local_model_index);
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136 }
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137
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138 if (_explicit_collapse.global) {
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139 view->collapse (global_model_index);
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140 } else {
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141 view->expand (global_model_index);
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142 }
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143
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144 if (_explicit_collapse.persistent) {
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145 view->collapse (persistent_model_index);
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146 } else {
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147 view->expand (persistent_model_index);
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148 }
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149 }
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150
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151 void
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152 workspace_view::collapse_requested (QModelIndex index)
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153 {
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154 // This code is very quirky and requires some explanation.
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155 // Usually, we should not deal with collapsing or expanding ourselves,
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156 // because the view itself determines (based on the model) whether it
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157 // is appropriate to collapse or expand items.
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158 //
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159 // Now, the logic requires that we update our model item by item, which
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160 // would make it work correctly, but this is extremely slow and scales
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161 // very bad (O(n^2)). That's why we throw away our model and rebuild it
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162 // completely from scratch (O(n)), which is why the view renders all
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163 // displayed data as invalid.
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164 //
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165 // In order to make collapsing/expanding work again, we need to set
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166 // flags ourselves here.
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167 QAbstractItemModel *m = view->model ();
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168
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169 QMap<int, QVariant> item_data = m->itemData (index);
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170
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171 if (item_data[0] == "Local")
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172 _explicit_collapse.local = true;
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173 if (item_data[0] == "Global")
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174 _explicit_collapse.global = true;
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175 if (item_data[0] == "Persistent")
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176 _explicit_collapse.persistent = true;
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177 }
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178
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179 void
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180 workspace_view::expand_requested (QModelIndex index)
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181 {
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182 // This code is very quirky and requires some explanation.
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183 // Usually, we should not deal with collapsing or expanding ourselves,
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184 // because the view itself determines (based on the model) whether it
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185 // is appropriate to collapse or expand items.
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186 //
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187 // Now, the logic requires that we update our model item by item, which
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188 // would make it work correctly, but this is extremely slow and scales
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189 // very bad (O(n^2)). That's why we throw away our model and rebuild it
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190 // completely from scratch (O(n)), which is why the view renders all
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191 // displayed data as invalid.
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192 //
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193 // In order to make collapsing/expanding work again, we need to do set
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194 // flags ourselves here.
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195 QAbstractItemModel *m = view->model ();
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196
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197 QMap<int, QVariant> item_data = m->itemData (index);
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198
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199 if (item_data[0] == "Local")
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200 _explicit_collapse.local = false;
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201 if (item_data[0] == "Global")
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202 _explicit_collapse.global = false;
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203 if (item_data[0] == "Persistent")
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204 _explicit_collapse.persistent = false;
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205 }
e440b3f32f02 Fixed bug with closing subwindows.
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206
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207 void
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208 workspace_view::item_double_clicked (QModelIndex)
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209 {
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210 // TODO: Implement opening a dialog that allows the user to change a variable in the workspace.
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211 }
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212
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213 void
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diff changeset
214 workspace_view::closeEvent (QCloseEvent *e)
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diff changeset
215 {
14712
5cb54cca8a06 Completion of code reformatting.
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diff changeset
216 emit active_changed (false);
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217 QDockWidget::closeEvent (e);
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218 }
15552
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diff changeset
219
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220 // slot for signal that is emitted when floating property changes
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221 void
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222 workspace_view::top_level_changed (bool floating)
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diff changeset
223 {
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diff changeset
224 if(floating)
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225 {
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diff changeset
226 setWindowFlags(Qt::Window); // make a window from the widget when floating
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227 show(); // make it visible again since setWindowFlags hides it
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228 }
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229 }