gitkrwoptionchoice.c

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#define GITK_RENDERER_C
#define GITKR_WIDGET_OPTIONCHOICE_C

#include "gitkrincludes.h"

void gitkr_widget_optionchoice_new(GitkrTextWidgetPtr widget,GitkDialogPtr dialog,xmlNodePtr node) {
  widget->icon='?';
  gitkr_widget_new(widget,dialog,node);
  widget->type=GITK_WIDGET_TYPE_OPTIONCHOICE;
  widget->output=gitkr_widget_optionchoice_output;
  widget->handle=gitkr_widget_optionchoice_handle;
}

void gitkr_widget_optionchoice_output(GitkrTextWidgetPtr widget,gint line,gboolean active) {
  gint str_len,col;
  gchar *value=gitkr_widget_get_value(widget->dialog,widget->id,"value");
  GList *choices=gitkr_widget_optionchoice_get_choices(widget);

  gitkr_widget_output_pre(widget,line,active);

  //-- display label
  if(widget->label) {
    mvaddstr(line,2,widget->label);
    str_len=strlen(widget->label);
  }
  else {
    mvaddstr(line,2,"-");
    str_len=1;
  }
  mvaddstr(line,2+str_len," : [");
  col=gitkr_widget_optionchoice_value_output(2+str_len+4,line,(value?atoi(value):0),choices);
  mvaddstr(line,col,"]");
  free(value);
  gitkr_widget_optionchoice_free_choices(choices);

  if(active && widget->label) { festival_say_text(ftinfo,widget->label); }
  gitkr_widget_output_post(widget,line,active);
}

gboolean gitkr_widget_optionchoice_handle(GitkrTextWidgetPtr widget,gint line) {
  gint key;
  gint xmin,xpos;
  gboolean sub_run=TRUE,result=TRUE;
  gchar *value=gitkr_widget_get_value(widget->dialog,widget->id,"value");
  GList *choices=gitkr_widget_optionchoice_get_choices(widget);
  gint cur_value=(value?atoi(value):0);  //-- determine selected entry
  char res[10]; //-- temporary buffer for setting the result

  //-- un-highlight widget
  widget->output(widget,line,FALSE);
  //-- activate style
  gitkr_widget_output_pre(widget,line,FALSE);
  //-- calculate widget size
  if(widget->label) {
    xmin=2+strlen(widget->label)+4;
  }
  else {
    xmin=2+1+4;
  }

  //-- position cursor
  xpos=gitkr_widget_optionchoice_get_position(choices,cur_value);
  move(line,xmin+xpos);
  refresh();
  festival_say_text(ftinfo,g_list_nth_data(choices,cur_value));
  //-- now run the sub-event-loop
  while(run && sub_run) {
    if((key=gitkr_event_loop_getkey())==ERR) continue;
    //-- process the key-code
    switch(key) {
      case KEY_F10:    // cancel edit
        sub_run=FALSE;result=FALSE;
        break;
      case KEY_RETURN: // submit edit
      case KEY_ENTER:
        sprintf(res,"%d",cur_value);
        gitkr_widget_set_value(widget->dialog,widget->id,"value",res);
        sub_run=FALSE;
        break;
      case KEY_LEFT:
        if(cur_value) {
          xpos=gitkr_widget_optionchoice_get_position(choices,cur_value);
          mvaddstr(line,xmin+xpos," ");
          addstr(g_list_nth_data(choices,cur_value));
          addstr(" ");
          cur_value--;
          xpos=gitkr_widget_optionchoice_get_position(choices,cur_value);
          mvaddstr(line,xmin+xpos,"<");
          addstr(g_list_nth_data(choices,cur_value));
          addstr(">");
          move(line,xmin+xpos);
          festival_say_text(ftinfo,g_list_nth_data(choices,cur_value));
        }
        else beep();
        refresh();
        break;
      case KEY_RIGHT:
        if(cur_value<(g_list_length(choices)-1)) {
          xpos=gitkr_widget_optionchoice_get_position(choices,cur_value);
          mvaddstr(line,xmin+xpos," ");
          addstr(g_list_nth_data(choices,cur_value));
          addstr(" ");
          cur_value++;
          xpos=gitkr_widget_optionchoice_get_position(choices,cur_value);
          mvaddstr(line,xmin+xpos,"<");
          addstr(g_list_nth_data(choices,cur_value));
          addstr(">");
          move(line,xmin+xpos);
          festival_say_text(ftinfo,g_list_nth_data(choices,cur_value));
        }
        else beep();
        refresh();
        break;
    }
  }
  //-- highlight widget
  widget->output(widget,line,TRUE);
  //-- re-position cursor
  move(line,0);
  refresh();

  return(result);
}

gint gitkr_widget_optionchoice_value_output(gint col,gint line,gint value,GList *choices) {
  gint i;
  GList *choice;

  g_assert(choices!=NULL);

  for(i=0,choice=g_list_first(choices);choice;i++,choice=g_list_next(choice)) {
    if(value!=i) { //-- unselected
      mvaddstr(line,col," ");
      mvaddstr(line,col+1,choice->data);
      col+=(strlen(choice->data)+1);
      mvaddstr(line,col," ");
      col++;
    }
    else { //-- selected
      mvaddstr(line,col,"<");
      mvaddstr(line,col+1,choice->data);
      col+=(strlen(choice->data)+1);
      mvaddstr(line,col,">");
      col++;
    }
  }
  return(col);
}

GList *gitkr_widget_optionchoice_get_choices(GitkrTextWidgetPtr widget) {
  GList *choices=NULL;
  xmlXPathObjectPtr options_xpoptr;
  xmlNodePtr node=gitk_dialog_get_widget(widget->dialog,widget->id);

  //-- get all options
  if((options_xpoptr=gitk_xpath_type_filter(
      gitk_xpath_get_object(widget->dialog,"./"GITK_NS_PREFIX":options/"GITK_NS_PREFIX":option",node),
      XPATH_NODESET))) {
    gint i;
    gchar *str;
    xmlNodePtr choice;
    xmlNodeSetPtr ns=(xmlNodeSetPtr)options_xpoptr->nodesetval;
    //-- iterate over nodeset
    for(i=0;i<xmlXPathNodeSetGetLength(ns);i++) {
      choice=xmlXPathNodeSetItem(ns,i);
      if(!xmlNodeIsText(choice)) {
        str=xmlNodeGetContent(choice);
        choices=g_list_append(choices,g_convert(str,-1,nl_langinfo(CODESET),"UTF-8",NULL,NULL,NULL));
        xmlFree(str);
      }
      else {
        gitk_err("unexpected textnode in dialog definition");
      }
    }
    xmlXPathFreeObject(options_xpoptr);
  }
  else { gitk_err("failed to get options"); }
  return(choices);
}

void gitkr_widget_optionchoice_free_choices(GList *choices) {
  gitkr_widget_optionchoice_free_list(choices);
}

gint gitkr_widget_optionchoice_get_position(GList *choices,gint value) {
  gint i,col=0;
  GList *choice;

  g_assert(choices!=NULL);

  for(i=0,choice=g_list_first(choices);(i<value && choice);i++,choice=g_list_next(choice)) {
    col+=(strlen(choice->data)+2);
  }
  return(col);
}

GList *gitkr_widget_optionchoice_get_ids(GitkrTextWidgetPtr widget) {
  GList *items=NULL;
  xmlXPathObjectPtr options_xpoptr;
  xmlNodePtr node=gitk_dialog_get_widget(widget->dialog,widget->id);

  //-- get all options
  if((options_xpoptr=gitk_xpath_type_filter(
      gitk_xpath_get_object(widget->dialog,"./"GITK_NS_PREFIX":options/"GITK_NS_PREFIX":option",node),
      XPATH_NODESET))) {
    gint i;
    xmlNodePtr item;
    xmlNodeSetPtr ns=(xmlNodeSetPtr)options_xpoptr->nodesetval;
    //-- iterate over nodeset
    for(i=0;i<xmlXPathNodeSetGetLength(ns);i++) {
      item=xmlXPathNodeSetItem(ns,i);
      if(!xmlNodeIsText(item)) {
        items=g_list_append(items,xmlGetProp(item,"id"));
      }
      else {
        gitk_err("unexpected textnode in dialog definition");
      }
    }
    xmlXPathFreeObject(options_xpoptr);
  }
  else { gitk_err("failed to get options"); }
  return(items);
}

void gitkr_widget_optionchoice_free_ids(GList *ids) {
  gitkr_widget_optionchoice_free_list(ids);
}

void gitkr_widget_optionchoice_free_list(GList *items) {
  GList *item;

  g_assert(items!=NULL);

  item=g_list_first(items);
  while(item) {
    free(item->data);
    item=g_list_next(item);
  }
  g_list_free(items);
}

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