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/***************************************************************************
UndoAddLabelAction.cpp - Undo action for deleting labels
-------------------
begin : Wed Aug 16 2006
copyright : (C) 2006 by Thomas Eschenbacher
email : Thomas Eschenbacher <Thomas.Eschenbacher@gmx.de>
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "config.h"
#include <new>
#include <KLocalizedString>
#include "libkwave/SignalManager.h"
#include "libkwave/undo/UndoAddMetaDataAction.h"
#include "libkwave/undo/UndoDeleteMetaDataAction.h"
//***************************************************************************
Kwave::UndoDeleteMetaDataAction::UndoDeleteMetaDataAction(
const Kwave::MetaDataList &meta_data)
:UndoAction(), m_meta_data(meta_data)
{
}
//***************************************************************************
Kwave::UndoDeleteMetaDataAction::~UndoDeleteMetaDataAction()
{
}
//***************************************************************************
QString Kwave::UndoDeleteMetaDataAction::description()
{
// sanity check: list should not be empty
Q_ASSERT(!m_meta_data.isEmpty());
if (m_meta_data.isEmpty()) return _("");
QString name;
{
const Kwave::MetaData &m = m_meta_data.first();
if (m.hasProperty(Kwave::MetaData::STDPROP_TYPE))
name = m[Kwave::MetaData::STDPROP_TYPE].toString();
}
// if the meta data list contains only one object: try to find
// out the object's name
if ((m_meta_data.count() == 1) && name.length()) {
return i18nc(
"name of the undo action for deleting a meta data object",
"Delete %1",
name
);
}
// check if the list contains only objects of the same type
bool all_same_type = true;
foreach (const Kwave::MetaData &m, m_meta_data) {
QString n = m[Kwave::MetaData::STDPROP_TYPE].toString();
if (!n.length() || (n != name)) {
all_same_type = false;
break;
}
}
if (all_same_type) {
return i18nc(
"name of the undo action for deleting multiple "
"meta data objects of the same type: "
"%1=number of elements, %2=name of one element in singular",
"Delete %1 %2 objects", m_meta_data.count(), name
);
}
return i18n("Delete Meta Data");
}
//***************************************************************************
qint64 Kwave::UndoDeleteMetaDataAction::undoSize()
{
return sizeof(*this);
}
//***************************************************************************
qint64 Kwave::UndoDeleteMetaDataAction::redoSize()
{
return sizeof(Kwave::UndoAddMetaDataAction);
}
//***************************************************************************
bool Kwave::UndoDeleteMetaDataAction::store(Kwave::SignalManager &)
{
// nothing to do, all data has already
// been stored in the constructor
return true;
}
//***************************************************************************
Kwave::UndoAction *Kwave::UndoDeleteMetaDataAction::undo(
Kwave::SignalManager &manager, bool with_redo)
{
Q_ASSERT(!m_meta_data.isEmpty());
if (m_meta_data.isEmpty()) return nullptr;
Kwave::UndoAction *redo = nullptr;
// add the stored meta data to the signal managers' meta data
manager.metaData().add(m_meta_data);
// store data for redo
if (with_redo) {
redo = new(std::nothrow) Kwave::UndoAddMetaDataAction(m_meta_data);
Q_ASSERT(redo);
if (redo) redo->store(manager);
}
return redo;
}
//***************************************************************************
void Kwave::UndoDeleteMetaDataAction::dump(const QString &indent)
{
foreach (const Kwave::MetaData &m, m_meta_data) {
qDebug("%sundo delete meta data object '%s'",
DBG(indent), DBG(m.id()));
// dump all properties of the object
foreach (const QString &key, m.keys()) {
QVariant v = m[key];
QString value;
if (v.typeId() == QMetaType::QVariantList) {
foreach (const QVariant &v1, v.toList())
value += _("'") + v1.toString() + _("' ");
} else {
value = v.toString();
}
qDebug("%s '%s' = '%s", DBG(indent), DBG(key), DBG(value));
}
}
}
//***************************************************************************
//***************************************************************************
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