Kwave::UndoReverseAction Class Reference

#include <UndoReverseAction.h>

Inheritance diagram for Kwave::UndoReverseAction:

Collaboration diagram for Kwave::UndoReverseAction:

Public Member Functions
	UndoReverseAction (Kwave::PluginManager &plugin_manager)
virtual	~UndoReverseAction () Q_DECL_OVERRIDE
virtual QString	description () Q_DECL_OVERRIDE
virtual qint64	undoSize () Q_DECL_OVERRIDE
virtual qint64	redoSize () Q_DECL_OVERRIDE
virtual bool	store (Kwave::SignalManager &manager) Q_DECL_OVERRIDE
virtual UndoAction *	undo (Kwave::SignalManager &manager, bool with_redo) Q_DECL_OVERRIDE
Public Member Functions inherited from Kwave::UndoAction
virtual	~UndoAction ()
virtual bool	containsModification () const
virtual void	dump (const QString &indent)

Private Attributes
Kwave::PluginManager &	m_plugin_manager

Detailed Description

Definition at line 33 of file UndoReverseAction.h.

Constructor & Destructor Documentation

UndoReverseAction()

Kwave::UndoReverseAction::UndoReverseAction ( Kwave::PluginManager &  plugin_manager )

explicit

Constructor

Definition at line 30 of file UndoReverseAction.cpp.

    :m_plugin_manager(plugin_manager)
{
}

~UndoReverseAction()

Kwave::UndoReverseAction::~UndoReverseAction ( )

virtual

Destructor

Definition at line 37 of file UndoReverseAction.cpp.

{
}

Member Function Documentation

description()

QString Kwave::UndoReverseAction::description ( )

virtual

Returns a verbose short description of the action.

Implements Kwave::UndoAction.

Definition at line 42 of file UndoReverseAction.cpp.

{
    return i18n("Reverse");
}

redoSize()

qint64 Kwave::UndoReverseAction::redoSize ( )

virtual

Returns the difference of needed memory that is needed for redo.

Implements Kwave::UndoAction.

Definition at line 54 of file UndoReverseAction.cpp.

{
    return sizeof(*this);
}

store()

bool Kwave::UndoReverseAction::store ( Kwave::SignalManager &  manager )

virtual

Stores the data needed for undo.

Parameters

manager

the SignalManager for modifying the signal

Note

this is the second step, after size() has been called

Returns

true if successful, false if failed (e.g. out of memory)

Implements Kwave::UndoAction.

Definition at line 60 of file UndoReverseAction.cpp.

{
    Q_UNUSED(manager);
    return true;
}

undo()

Kwave::UndoAction * Kwave::UndoReverseAction::undo ( Kwave::SignalManager &  manager, bool  with_redo  )

virtual

Takes back an action by creating a new undo action (for further redo) and restoring the previous state.

Parameters

manager	the SignalManager for modifying the signal
with_redo	if true a UndoAction for redo will be created

Note

The return value is allowed to be the same object. This is useful for objects that can re-use their data for undo/redo. You have to check for this when deleting an UndoAction object after undo.

Implements Kwave::UndoAction.

Definition at line 67 of file UndoReverseAction.cpp.

References _, Kwave::PluginManager::enqueueCommand(), and m_plugin_manager.

{
    Q_UNUSED(manager);
    m_plugin_manager.enqueueCommand(
        _("nomacro:plugin:execute(reverse,noundo)")
    );
    return (with_redo) ? this : Q_NULLPTR;
}

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undoSize()

qint64 Kwave::UndoReverseAction::undoSize ( )

virtual

Returns the required amount of memory that is needed for storing undo data for the operation. This will be called to determine the free memory to be reserved.

Note

this is the first step (after the constructor)

Implements Kwave::UndoAction.

Definition at line 48 of file UndoReverseAction.cpp.

{
    return sizeof(*this);
}

Member Data Documentation

m_plugin_manager

Kwave::PluginManager& Kwave::UndoReverseAction::m_plugin_manager

private

plugin manager, for emitting the sigCommand(reverse())

Definition at line 86 of file UndoReverseAction.h.

Referenced by undo().

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The documentation for this class was generated from the following files:

• plugins/reverse/UndoReverseAction.h
• plugins/reverse/UndoReverseAction.cpp