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juce_UndoableAction.h
1/*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2017 - ROLI Ltd.
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 By using JUCE, you agree to the terms of both the JUCE 5 End-User License
11 Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
12 27th April 2017).
13
14 End User License Agreement: www.juce.com/juce-5-licence
15 Privacy Policy: www.juce.com/juce-5-privacy-policy
16
17 Or: You may also use this code under the terms of the GPL v3 (see
18 www.gnu.org/licenses).
19
20 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
21 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
22 DISCLAIMED.
23
24 ==============================================================================
25*/
26
27 namespace juce
28{
29
30//==============================================================================
39 class JUCE_API UndoableAction
40{
41 protected:
43 UndoableAction() = default;
44
45 public:
47 virtual ~UndoableAction() = default;
48
49 //==============================================================================
61 virtual bool perform() = 0;
62
74 virtual bool undo() = 0;
75
76 //==============================================================================
89 virtual int getSizeInUnits() { return 10; }
90
98 virtual UndoableAction* createCoalescedAction (UndoableAction* nextAction) { ignoreUnused (nextAction); return nullptr; }
99};
100
101} // namespace juce
juce::UndoableAction
Definition: juce_UndoableAction.h:40
juce::UndoableAction::undo
virtual bool undo()=0
juce::UndoableAction::UndoableAction
UndoableAction()=default
juce::UndoableAction::~UndoableAction
virtual ~UndoableAction()=default
juce::UndoableAction::createCoalescedAction
virtual UndoableAction * createCoalescedAction(UndoableAction *nextAction)
Definition: juce_UndoableAction.h:98
juce::UndoableAction::perform
virtual bool perform()=0
juce::UndoableAction::getSizeInUnits
virtual int getSizeInUnits()
Definition: juce_UndoableAction.h:89