action_dialog.c

#include <gtk/gtk.h>
#include "actions.h"

#define GRID_WIDTH 6

typedef struct _choice {
  int action;
  GtkWidget *button;
  gulong signal_id;
  struct _choice *previous;
} CHOICE;

static GtkWidget *dialog;
static GtkWidget *previous_button;
static gulong previous_signal_id;
static int action;

static void action_select_cb(GtkWidget *widget,gpointer data) {
  CHOICE *choice=(CHOICE *)data;
  g_signal_handler_block(G_OBJECT(previous_button),previous_signal_id);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(previous_button),widget==previous_button);
  g_signal_handler_unblock(G_OBJECT(previous_button),previous_signal_id);
  previous_button=widget;
  previous_signal_id=choice->signal_id;
  action=choice->action;
}

int action_dialog(GtkWidget *parent,int filter,int currentAction) {
  int i,j;
  CHOICE *previous=NULL;
  CHOICE *choice=NULL;

  action=currentAction;
  previous_button=NULL;
  dialog=gtk_dialog_new_with_buttons("Action",GTK_WINDOW(parent),GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,("_OK"),GTK_RESPONSE_ACCEPT,("_Cancel"),GTK_RESPONSE_REJECT,NULL);
  GtkWidget *content=gtk_dialog_get_content_area(GTK_DIALOG(dialog));
  GtkWidget *scrolled_window=gtk_scrolled_window_new(NULL,NULL);
  gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),GTK_POLICY_AUTOMATIC,GTK_POLICY_ALWAYS);
  gtk_widget_set_size_request(scrolled_window,790,380);

  GtkWidget *grid=gtk_grid_new();
  gtk_grid_set_column_spacing(GTK_GRID(grid),2);
  gtk_grid_set_row_spacing(GTK_GRID(grid),2);
  gtk_grid_set_column_homogeneous(GTK_GRID(grid),TRUE);
  gtk_grid_set_row_homogeneous(GTK_GRID(grid),TRUE);
  j=0;
  for(i=0;i<ACTIONS;i++) {
    if((ActionTable[i].type&filter) || (ActionTable[i].type==TYPE_NONE)) {
      GtkWidget *button=gtk_toggle_button_new_with_label(ActionTable[i].str);
      gtk_widget_set_name(button,"small_toggle_button");
      gtk_grid_attach(GTK_GRID(grid),button,j%GRID_WIDTH,j/GRID_WIDTH,1,1);
      if(ActionTable[i].action==currentAction) {
        gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(button),TRUE);
      }
      choice=g_new0(CHOICE,1);
      choice->action=i;
      choice->button=button;
      choice->signal_id=g_signal_connect(button,"toggled",G_CALLBACK(action_select_cb),choice);
      choice->previous=previous;
      previous=choice;

      if(ActionTable[i].action==currentAction) {
        previous_button=button;
        previous_signal_id=choice->signal_id;
      }
      j++;
    }
  }
  gtk_container_add(GTK_CONTAINER(scrolled_window),grid);
  gtk_container_add(GTK_CONTAINER(content),scrolled_window);
  gtk_widget_show_all(content);
  int result = gtk_dialog_run (GTK_DIALOG (dialog));
  gtk_widget_destroy(dialog);
  if(result!=GTK_RESPONSE_ACCEPT) {
    action=currentAction;
  }
  // free up choice structures
  while(previous!=NULL) {
    choice=previous;
    previous=choice->previous;
    g_free(choice);
  }
  return action;
}