/src/libreoffice/include/vcl/weld/Toggleable.hxx
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1 | | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */ |
2 | | /* |
3 | | * This file is part of the LibreOffice project. |
4 | | * |
5 | | * This Source Code Form is subject to the terms of the Mozilla Public |
6 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
7 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. |
8 | | */ |
9 | | |
10 | | #pragma once |
11 | | |
12 | | #include <vcl/dllapi.h> |
13 | | #include <vcl/weld/Widget.hxx> |
14 | | |
15 | | namespace weld |
16 | | { |
17 | | class VCL_DLLPUBLIC Toggleable : virtual public Widget |
18 | | { |
19 | | protected: |
20 | | Link<Toggleable&, void> m_aToggleHdl; |
21 | | TriState m_eSavedValue = TRISTATE_FALSE; |
22 | | |
23 | | void signal_toggled() |
24 | 0 | { |
25 | 0 | if (notify_events_disabled()) |
26 | 0 | return; |
27 | 0 | m_aToggleHdl.Call(*this); |
28 | 0 | } |
29 | | |
30 | | virtual void do_set_active(bool active) = 0; |
31 | | |
32 | | public: |
33 | | void set_active(bool active) |
34 | 0 | { |
35 | 0 | disable_notify_events(); |
36 | 0 | do_set_active(active); |
37 | 0 | enable_notify_events(); |
38 | 0 | } |
39 | | |
40 | | virtual bool get_active() const = 0; |
41 | | |
42 | | virtual TriState get_state() const |
43 | 0 | { |
44 | 0 | if (get_active()) |
45 | 0 | return TRISTATE_TRUE; |
46 | 0 | return TRISTATE_FALSE; |
47 | 0 | } |
48 | | |
49 | 0 | void save_state() { m_eSavedValue = get_state(); } |
50 | 0 | TriState get_saved_state() const { return m_eSavedValue; } |
51 | 0 | bool get_state_changed_from_saved() const { return m_eSavedValue != get_state(); } |
52 | | |
53 | 0 | virtual void connect_toggled(const Link<Toggleable&, void>& rLink) { m_aToggleHdl = rLink; } |
54 | | }; |
55 | | } |
56 | | |
57 | | /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */ |