2 Copyright (C) 2000-2007 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include "pbd/base_ui.h"
28 #include "pbd/error.h"
29 #include "pbd/compose.h"
30 #include "pbd/failed_constructor.h"
38 uint64_t BaseUI::rt_bit = 1;
39 BaseUI::RequestType BaseUI::CallSlot = BaseUI::new_request_type();
41 BaseUI::BaseUI (const string& str)
45 base_ui_instance = this;
47 request_channel.ios()->connect (sigc::mem_fun (*this, &BaseUI::request_handler));
49 /* derived class must set _ok */
57 BaseUI::new_request_type ()
61 /* XXX catch out-of-range */
63 rt = RequestType (rt_bit);
70 BaseUI::main_thread ()
79 /* to be called by UI's that need/want their own distinct, self-created event loop thread.
80 Derived classes should have set up a handler for IO on request_channel.ios()
83 _main_loop = MainLoop::create (MainContext::create());
84 request_channel.ios()->attach (_main_loop->get_context());
85 run_loop_thread = Thread::create (mem_fun (*this, &BaseUI::main_thread), true);
92 run_loop_thread->join ();
96 BaseUI::request_handler (Glib::IOCondition ioc)
98 /* check the transport request pipe */
105 request_channel.drain ();
107 /* there may been an error. we'd rather handle requests first,
108 and then get IO_HUP or IO_ERR on the next loop.
111 /* handle requests */
113 handle_ui_requests ();