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class MyWindow: Gtk.ApplicationWindow {
/* MyWindow instance variables. */
GLib.File? file;
Gtk.TextBuffer buffer;
Gtk.TextView textview;
Gtk.ScrolledWindow scrolled_window;
/* Create ActionEntries. */
const ActionEntry[] actions = {
{ "new", new_cb },
{ "open", open_cb },
{ "save", save_cb },
{ "save-as", save_as_cb }
};
/* Constructor creates MyWindow, and add the scrolled_window. */
internal MyWindow (MyApplication app) {
Object (application: app, title: "FileChooserDialog Example");
this.set_default_size (400, 400);
/* Add the ActionEntries to MyWindow. */
this.add_action_entries (actions, this);
buffer = new Gtk.TextBuffer (null); //stores text to be displayed
textview = new Gtk.TextView.with_buffer (buffer); //displays TextBuffer
textview.set_wrap_mode (Gtk.WrapMode.WORD); //sets line wrapping
scrolled_window = new Gtk.ScrolledWindow (null, null);
scrolled_window.set_policy (Gtk.PolicyType.AUTOMATIC,
Gtk.PolicyType.AUTOMATIC);
scrolled_window.add (textview);
scrolled_window.set_border_width (5);
this.add (scrolled_window);
this.show_all ();
}
void new_cb (SimpleAction action, Variant? parameter) {
file = null;
buffer.set_text ("");
print ("New file created\n");
}
/* Create FileChooserDialog in OPEN mode. */
void open_cb (SimpleAction action, Variant? parameter) {
var open_dialog = new Gtk.FileChooserDialog ("Pick a file",
this as Gtk.Window,
Gtk.FileChooserAction.OPEN,
Gtk.Stock.CANCEL,
Gtk.ResponseType.CANCEL,
Gtk.Stock.OPEN,
Gtk.ResponseType.ACCEPT);
open_dialog.local_only = false; //allow for uri
open_dialog.set_modal (true);
open_dialog.response.connect (open_response_cb);
open_dialog.show ();
}
/* Either open the file and load the file contents or cancel. */
void open_response_cb (Gtk.Dialog dialog, int response_id) {
var open_dialog = dialog as Gtk.FileChooserDialog;
switch (response_id) {
case Gtk.ResponseType.ACCEPT: //open the file
file = open_dialog.get_file();
uint8[] file_contents;
try {
file.load_contents (null, out file_contents, null);
}
catch (GLib.Error err) { //handle the exception
error ("%s\n", err.message);
}
/* Set the buffer text to be the contents of the file. */
buffer.set_text ((string) file_contents,
file_contents.length);
print ("opened: %s\n", (open_dialog.get_filename ()));
break;
case Gtk.ResponseType.CANCEL:
print ("cancelled: FileChooserAction.OPEN\n");
break;
}
dialog.destroy ();
}
/* Create FileChooserDialog in SAVE mode. */
void save_as_cb (SimpleAction action, Variant? parameter) {
var save_dialog = new Gtk.FileChooserDialog ("Pick a file",
this as Gtk.Window,
Gtk.FileChooserAction.SAVE,
Gtk.Stock.CANCEL,
Gtk.ResponseType.CANCEL,
Gtk.Stock.SAVE,
Gtk.ResponseType.ACCEPT);
save_dialog.set_do_overwrite_confirmation (true);
save_dialog.set_modal (true);
if (file != null) {
try {
(save_dialog as Gtk.FileChooser).set_file (file);
}
catch (GLib.Error error) {
print ("%s\n", error.message);
}
}
save_dialog.response.connect (save_as_response_cb);
save_dialog.show ();
}
void save_as_response_cb (Gtk.Dialog dialog, int response_id) {
var save_dialog = dialog as Gtk.FileChooserDialog;
switch (response_id) {
case Gtk.ResponseType.ACCEPT:
file = save_dialog.get_file();
this.save_to_file ();
break;
default:
break;
}
dialog.destroy ();
}
/* Save the existing contents to the file.
* If file does not exist, call save_as_cb.
*/
void save_cb (SimpleAction action, Variant? parameter) {
if (file != null) {
this.save_to_file ();
}
else {
save_as_cb (action, parameter);
}
}
void save_to_file (){
Gtk.TextIter start;
Gtk.TextIter end;
buffer.get_bounds (out start, out end);
string current_contents = buffer.get_text (start, end, false);
try {
file.replace_contents (current_contents.data, null, false,
GLib.FileCreateFlags.NONE, null, null);
print ("saved: %s\n", file.get_path ());
}
catch (GLib.Error err) {
error ("%s\n", err.message);
}
}
}
/* This is the application */
class MyApplication: Gtk.Application {
protected override void activate () {
new MyWindow (this).show_all;
}
const ActionEntry[] actions = {
{ "quit", quit_cb }
};
void quit_cb (SimpleAction action, Variant? parameter) {
this.quit ();
}
protected override void startup () {
base.startup ();
/* Setup actions */
this.add_action_entries (actions, this);
/* Setup menus */
var builder = new Gtk.Builder ();
try {
builder.add_from_file ("filechooserdialog.ui");
} catch (GLib.Error err) {
error ("Unable to load file: %s\n", err.message);
}
this.app_menu = builder.get_object ("appmenu") as MenuModel;
}
}
/* main creates and runs the application. */
public int main (string[] args) {
return new MyApplication ().run (args);
}
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