helm/gtkmathview-bonobo/src/handlers.c

   1
   2 #include "handlers.h"
   3
   4 static void
   5 set_clipboard(GdomeDOMString* data)
   6 {
   7   GtkClipboard* clipboard = gtk_clipboard_get(GDK_SELECTION_PRIMARY);
   8   gtk_clipboard_set_text(clipboard, data->str, gdome_str_length(data));
   9 }
  10
  11 void
  12 set_frame(BonoboControl *control, gpointer data)
  13 {
  14 }
  15
  16 void
  17 click_cb(GtkMathView* math_view, GdomeElement* elem, gint state,
  18          GtkMathViewControlData* control_data)
  19 {
  20   GdomeException exc = 0;
  21
  22   g_return_if_fail(math_view != NULL);
  23   g_return_if_fail(control_data != NULL);
  24
  25   if (elem != NULL)
  26     {
  27       GdomeElement* action;
  28       GdomeDOMString* href = find_hyperlink(elem);
  29
  30       if (href != NULL)
  31         {
  32           /*gtk_math_view_load_uri(math_view,href->str);*/
  33           set_clipboard(href);
  34           gdome_str_unref(href);
  35           return;
  36         }
  37
  38       action = find_self_or_ancestor(elem, MATHML_NS_URI, "maction");
  39       if (action != NULL)
  40         {
  41           gtk_math_view_freeze(math_view);
  42           action_toggle(action);
  43           gtk_math_view_thaw(math_view);
  44           gdome_el_unref(action, &exc);
  45           g_assert(exc == 0);
  46           return;
  47         }
  48     }
  49
  50   if (control_data->root_selected != NULL)
  51     {
  52       gtk_math_view_freeze(math_view);
  53       gtk_math_view_unselect(math_view, control_data->root_selected);
  54       gtk_math_view_thaw(math_view);
  55       gdome_el_unref(control_data->root_selected, &exc);
  56       g_assert(exc == 0);
  57       control_data->root_selected = NULL;
  58     }
  59 }
  60
  61 void
  62 select_begin_cb(GtkMathView* math_view, GdomeElement* elem, gint state,
  63                 GtkMathViewControlData* control_data)
  64 {
  65   g_return_if_fail(math_view != NULL);
  66   g_return_if_fail(control_data != NULL);
  67
  68   if (elem != NULL)
  69     {
  70       GdomeException exc = 0;
  71       gtk_math_view_freeze(math_view);
  72       if (control_data->root_selected != NULL)
  73         {
  74           gtk_math_view_unselect(math_view, control_data->root_selected);
  75           gdome_el_unref(control_data->root_selected, &exc);
  76           g_assert(exc == 0);
  77           control_data->root_selected = NULL;
  78         }
  79
  80       if (control_data->id_ns_uri != NULL || control_data->id_name != NULL)
  81         {
  82           GdomeElement* new_elem = find_element_with_id(elem, control_data->id_ns_uri, control_data->id_name);
  83           if (new_elem != NULL)
  84             {
  85               gdome_el_ref(new_elem, &exc);
  86               g_assert(exc == 0);
  87             }
  88           control_data->first_selected = control_data->root_selected = new_elem;
  89         }
  90       else
  91         {
  92           gdome_el_ref(elem, &exc);
  93           g_assert(exc == 0);
  94           gdome_el_ref(elem, &exc);
  95           g_assert(exc == 0);
  96           control_data->first_selected = control_data->root_selected = elem;
  97         }
  98
  99       if (control_data->root_selected != NULL)
 100         gtk_math_view_select(math_view, control_data->root_selected);
 101
 102       gtk_math_view_thaw(math_view);
 103     }
 104 }
 105
 106 void
 107 select_over_cb(GtkMathView* math_view, GdomeElement* elem, gint state,
 108                GtkMathViewControlData* control_data)
 109 {
 110   g_return_if_fail(math_view != NULL);
 111   g_return_if_fail(control_data != NULL);
 112
 113   if (control_data->first_selected != NULL && elem != NULL)
 114     {
 115       GdomeException exc = 0;
 116
 117       gtk_math_view_freeze(math_view);
 118
 119       if (control_data->root_selected != NULL)
 120         {
 121           gtk_math_view_unselect(math_view, control_data->root_selected);
 122           gdome_el_unref(control_data->root_selected, &exc);
 123           g_assert(exc == 0);
 124           control_data->root_selected = NULL;
 125         }
 126
 127       if (control_data->id_ns_uri != NULL || control_data->id_name != NULL)
 128         {
 129           GdomeElement* new_root = find_common_ancestor(control_data->first_selected, elem);
 130           if (new_root != NULL)
 131             {
 132               control_data->root_selected = find_element_with_id(new_root, control_data->id_ns_uri, control_data->id_name);
 133               gdome_el_unref(new_root, &exc);
 134               g_assert(exc == 0);
 135             }
 136           else
 137             control_data->root_selected = NULL;
 138         }
 139       else
 140         control_data->root_selected = find_common_ancestor(control_data->first_selected, elem);
 141
 142       if (control_data->root_selected != NULL)
 143         gtk_math_view_select(math_view, control_data->root_selected);
 144
 145       gtk_math_view_thaw(math_view);
 146     }
 147 }
 148
 149 void
 150 select_end_cb(GtkMathView* math_view, GdomeElement* elem, gint state,
 151               GtkMathViewControlData* control_data)
 152 {
 153   g_return_if_fail(math_view != NULL);
 154   g_return_if_fail(control_data != NULL);
 155
 156   if (control_data->first_selected != NULL)
 157     {
 158       GdomeException exc = 0;
 159       gdome_el_unref(control_data->first_selected, &exc);
 160       g_assert(exc == 0);
 161       control_data->first_selected = NULL;
 162
 163       if (control_data->root_selected != NULL &&
 164           (control_data->id_ns_uri != NULL || control_data->id_name != NULL))
 165         {
 166           GdomeException exc = 0;
 167           GdomeDOMString* id = gdome_el_getAttributeNS(control_data->root_selected,
 168                                                        control_data->id_ns_uri,
 169                                                        control_data->id_name, &exc);
 170           g_assert(exc == 0);
 171           g_assert(id != NULL);
 172           set_clipboard(id);
 173           gdome_str_unref(id);
 174         }
 175     }
 176 }
 177
 178 void
 179 select_abort_cb(GtkMathView* math_view, GtkMathViewControlData* control_data)
 180 {
 181   GdomeException exc = 0;
 182
 183   g_return_if_fail(math_view != NULL);
 184   g_return_if_fail(control_data != NULL);
 185
 186   if (control_data->first_selected != NULL)
 187     {
 188       gdome_el_unref(control_data->first_selected, &exc);
 189       g_assert(exc == 0);
 190       control_data->first_selected = NULL;
 191     }
 192
 193   if (control_data->root_selected != NULL)
 194     {
 195       gtk_math_view_freeze(math_view);
 196       gtk_math_view_unselect(math_view, control_data->root_selected);
 197       gtk_math_view_thaw(math_view);
 198       gdome_el_unref(control_data->root_selected, &exc);
 199       g_assert(exc == 0);
 200       control_data->root_selected = NULL;
 201     }
 202 }
 203