git_ex08.c

#include <gtk/gtk.h>

static void app_activate (GApplication *app, gpointer user_data){
  g_print("Please specify a filename to open.\n");
}

static void
app_open (GApplication *app, GFile ** files, gint n_files, gchar *hint, gpointer user_data) {
  GtkWidget *win;
  GtkWidget *nb;
  GtkWidget *lab;
  GtkNotebookPage *nbp;
  GtkWidget *scr;
  GtkWidget *tv;
  GtkTextBuffer *tb;
  char *contents;
  gsize length;
  char *filename;
  int i;
  
  win = gtk_application_window_new(GTK_APPLICATION(app));
  gtk_window_set_title(GTK_WINDOW(win), "File Viewer");
  gtk_window_set_default_size(GTK_WINDOW(win), 400, 300);
  gtk_window_maximize(GTK_WINDOW(win));
  
  nb = gtk_notebook_new();
  gtk_window_set_child(GTK_WINDOW(win), nb);
  
  for (i = 0; i < n_files; i++){
    if (g_file_load_contents(files[i], NULL, &contents, &length, NULL, NULL)){
      scr = gtk_scrolled_window_new();
      tv = gtk_text_view_new();
      tb = gtk_text_view_get_buffer(GTK_TEXT_VIEW(tv));
      gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(tv), GTK_WRAP_WORD_CHAR);
      gtk_text_view_set_editable(GTK_TEXT_VIEW(tv), FALSE);
      gtk_scrolled_window_set_child(GTK_SCROLLED_WINDOW(scr), tv);
      
      gtk_text_buffer_set_text(tb, contents, length);
      g_free(contents);
      if ((filename = g_file_get_basename(files[i])) != NULL){
        lab = gtk_label_new(filename);
        g_free(filename);
      }else
        lab = gtk_label_new("");
      gtk_notebook_append_page(GTK_NOTEBOOK(nb), scr, lab);
      nbp = gtk_notebook_get_page(GTK_NOTEBOOK(nb), scr);
      g_object_set(nbp, "tab-expand", TRUE, NULL);
    }else if((filename = g_file_get_path(files[i])) != NULL){
      g_print("No such file: %s.\n", filename);
      g_free(filename);
    }else
      g_print("No valid file is given.\n");
  }
  if (gtk_notebook_get_n_pages(GTK_NOTEBOOK(nb)) > 0)
    gtk_widget_show(win);
  else
    gtk_window_destroy(GTK_WINDOW(win));
}



int main(int argc, char **argv){
  GtkApplication *app;
  int stat;
  
  app = gtk_application_new("com.example.www", G_APPLICATION_HANDLES_OPEN);
  g_signal_connect(app, "activate", G_CALLBACK(app_activate), NULL);
  g_signal_connect(app, "open", G_CALLBACK(app_open), NULL);
  stat = g_application_run(G_APPLICATION(app), argc, argv);
  g_object_ref(app);
  
  return stat;
}