libs/gtkmm2ext/selector.cc

   1 /*
   2     Copyright (C) 1999 Paul Barton-Davis
   3     This program is free software; you can redistribute it and/or modify
   4     it under the terms of the GNU General Public License as published by
   5     the Free Software Foundation; either version 2 of the License, or
   6     (at your option) any later version.
   7
   8     This program is distributed in the hope that it will be useful,
   9     but WITHOUT ANY WARRANTY; without even the implied warranty of
  10     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11     GNU General Public License for more details.
  12
  13     You should have received a copy of the GNU General Public License
  14     along with this program; if not, write to the Free Software
  15     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  16
  17     $Id$
  18 */
  19
  20 #include <algorithm>
  21 #include <functional>
  22 #include <vector>
  23 #include <string>
  24
  25 #include "pbd/pathscanner.h"
  26
  27 #include "gtkmm2ext/keyboard.h"
  28 #include "gtkmm2ext/selector.h"
  29 #include "gtkmm2ext/utils.h"
  30
  31 using namespace std;
  32 using namespace Gtkmm2ext;
  33
  34 Selector::Selector (void (*func)(Glib::RefPtr<Gtk::ListStore>, void *), void *arg,
  35                     vector<string> titles)
  36 {
  37         scroll.add (tview);
  38         scroll.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
  39
  40         pack_start (scroll, true, true);
  41
  42         vector<string>::iterator i;
  43         for (i = titles.begin(); i != titles.end(); ++i) {
  44                 Gtk::TreeModelColumn<Glib::ustring> title;
  45                 column_records.add(title);
  46         }
  47
  48         lstore = Gtk::ListStore::create(column_records);
  49         tview.set_model(lstore);
  50
  51         update_contents.connect(mem_fun(*this,&Selector::rescan));
  52
  53         tview.show ();
  54
  55         refiller = func;
  56         refill_arg = arg;
  57         selected_row = -1;
  58         selected_column = -1;
  59 }
  60
  61 Selector::~Selector ()
  62
  63 {
  64         /* ensure that any row data set with set_row_data_full() is deleted */
  65         hide_all ();
  66         lstore.clear ();
  67 }
  68
  69 void
  70 Selector::on_map()
  71
  72 {
  73         Gtk::VBox::on_map ();
  74
  75         selected_row = -1;
  76         selected_column = -1;
  77         refill();
  78 }
  79
  80 void
  81 Selector::on_show()
  82 {
  83         VBox::on_show();
  84
  85         rescan();
  86 }
  87
  88 void
  89 Selector::reset (void (*func)(Glib::RefPtr<Gtk::ListStore>, void *), void *arg)
  90
  91 {
  92         refiller = func;
  93         refill_arg = arg;
  94         selected_row = -1;
  95         selected_column = -1;
  96
  97         refill();
  98 }
  99
 100 void
 101 Selector::refill ()
 102
 103 {
 104         if (refiller) {
 105                 lstore.clear ();
 106                 refiller (lstore, refill_arg);
 107         }
 108 }
 109
 110 gint
 111 Selector::_accept (gpointer arg)
 112
 113 {
 114         ((Selector *) arg)->accept ();
 115         return FALSE;
 116 }
 117
 118 gint
 119 Selector::_chosen (gpointer arg)
 120
 121 {
 122         ((Selector *) arg)->chosen ();
 123         return FALSE;
 124 }
 125
 126 gint
 127 Selector::_shift_clicked (gpointer arg)
 128 {
 129         ((Selector *) arg)->shift_clicked ();
 130         return FALSE;
 131 }
 132
 133 gint
 134 Selector::_control_clicked (gpointer arg)
 135 {
 136         ((Selector *) arg)->control_clicked ();
 137         return FALSE;
 138 }
 139
 140 void
 141 Selector::accept ()
 142 {
 143         Glib::RefPtr<Gtk::TreeSelection> tree_sel = tview.get_selection();
 144         Gtk::TreeModel::iterator iter = tree_sel->get_selected();
 145
 146         if (iter) {
 147
 148                 selection_made (new Result (tview, tree_sel));
 149         } else {
 150                 cancel ();
 151         }
 152 }
 153
 154 void
 155 Selector::chosen ()
 156 {
 157         Glib::RefPtr<Gtk::TreeSelection> tree_sel = tview.get_selection();
 158         Gtk::TreeModel::iterator iter = tree_sel->get_selected();
 159
 160         if (iter) {
 161                 choice_made (new Result (tview, tree_sel));
 162         } else {
 163                 cancel ();
 164         }
 165 }
 166
 167 void
 168 Selector::shift_clicked ()
 169 {
 170         Glib::RefPtr<Gtk::TreeSelection> tree_sel = tview.get_selection();
 171         Gtk::TreeModel::iterator iter = tree_sel->get_selected();
 172
 173         if (iter) {
 174                 shift_made (new Result (tview, tree_sel));
 175         } else {
 176                 cancel ();
 177         }
 178 }
 179
 180 void
 181 Selector::control_clicked ()
 182 {
 183         Glib::RefPtr<Gtk::TreeSelection> tree_sel = tview.get_selection();
 184         Gtk::TreeModel::iterator iter = tree_sel->get_selected();
 185
 186         if (iter) {
 187                 control_made (new Result (tview, tree_sel));
 188         } else {
 189                 cancel ();
 190         }
 191 }
 192
 193 void
 194 Selector::cancel ()
 195 {
 196         Glib::RefPtr<Gtk::TreeSelection> tree_sel = tview.get_selection();
 197         tree_sel->unselect_all();
 198
 199         selection_made (new Result (tview, tree_sel));
 200 }
 201
 202 void
 203 Selector::rescan ()
 204
 205 {
 206         selected_row = -1;
 207         selected_column = -1;
 208         refill ();
 209         show_all ();
 210 }
 211
 212 struct string_cmp {
 213     bool operator()(const string* a, const string* b) {
 214             return *a < *b;
 215     }
 216 };
 217
 218 bool
 219 TreeView_Selector::on_button_press_event(GdkEventButton* ev)
 220 {
 221         bool return_value = TreeView::on_button_press_event(ev);
 222
 223         if (ev && (ev->type == GDK_BUTTON_RELEASE || ev->type == GDK_2BUTTON_PRESS)) {
 224                 if (ev->state & Keyboard::PrimaryModifier) {
 225                         g_idle_add (Selector::_control_clicked, this);
 226                 } else if (ev->state & Keyboard::TertiaryModifier) {
 227                         g_idle_add (Selector::_shift_clicked, this);
 228                 } else if (ev->type == GDK_2BUTTON_PRESS) {
 229                         g_idle_add (Selector::_accept, this);
 230                 } else {
 231                         g_idle_add (Selector::_chosen, this);
 232                 }
 233         }
 234
 235         return return_value;
 236 }