helm/gtkmathview-bonobo/src/handlers.c

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