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// SPDX-License-Identifier: GPL-2.0
// Note: this header file is used by the undo-machinery and should not be included elsewhere.
#ifndef COMMAND_EVENT_H
#define COMMAND_EVENT_H
#include "command_base.h"
// We put everything in a namespace, so that we can shorten names without polluting the global namespace
namespace Command {
// Events are a strange thing: they contain there own description which means
// that on changing the description a new object must be allocated. Moreover,
// it means that these objects can't be collected in a table.
// Therefore, the undo commands work on events as they do with dives: using
// owning pointers. See comments in command_base.h
class EventBase : public Base {
protected:
EventBase(struct dive *d, int dcNr);
void undo() override;
void redo() override;
virtual void redoit() = 0;
virtual void undoit() = 0;
// Note: we store dive and the divecomputer-number instead of a pointer to the divecomputer.
// Since one divecomputer is integrated into the dive structure, pointers to divecomputers
// are probably not stable.
struct dive *d;
int dcNr;
};
class AddEventBase : public EventBase {
public:
AddEventBase(struct dive *d, int dcNr, struct event *ev); // Takes ownership of event!
private:
bool workToBeDone() override;
void undoit() override;
void redoit() override;
OwningEventPtr eventToAdd; // for redo
event *eventToRemove; // for undo
};
class AddEventBookmark : public AddEventBase {
public:
AddEventBookmark(struct dive *d, int dcNr, int seconds);
};
class AddEventDivemodeSwitch : public AddEventBase {
public:
AddEventDivemodeSwitch(struct dive *d, int dcNr, int seconds, int divemode);
};
class AddEventSetpointChange : public AddEventBase {
public:
AddEventSetpointChange(struct dive *d, int dcNr, int seconds, pressure_t pO2);
};
} // namespace Command
#endif // COMMAND_EVENT_H
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