RemoveDiagramCommand Class Reference

The RemoveDiagramCommand class Undo/redo support for removing a folio (diagram) from a project. redo() detaches the diagram from the project (and, reactively, its ProjectView tab) without destroying it; undo() reinserts it at its original position. The diagram is only actually destroyed when this command itself is destroyed while the diagram is detached (i.e. while the removal is still in effect). More...

#include <removediagramcommand.h>

Inherits QUndoCommand.

Collaboration diagram for RemoveDiagramCommand:

Public Member Functions
	RemoveDiagramCommand (QETProject *project, Diagram *diagram, QUndoCommand *parent=nullptr)
	RemoveDiagramCommand::RemoveDiagramCommand.
	~RemoveDiagramCommand () override
	RemoveDiagramCommand::~RemoveDiagramCommand Destroy the diagram only if it is currently detached from the project (i.e. the removal is currently in effect) – otherwise the project owns it and will destroy it itself.
void	undo () override
void	redo () override

Private Attributes
QPointer< QETProject >	m_project
Diagram *	m_diagram
int	m_position
bool	m_owns_diagram = false
	true while the diagram is detached from the project (i.e. the removal is in effect)

Detailed Description

The RemoveDiagramCommand class Undo/redo support for removing a folio (diagram) from a project. redo() detaches the diagram from the project (and, reactively, its ProjectView tab) without destroying it; undo() reinserts it at its original position. The diagram is only actually destroyed when this command itself is destroyed while the diagram is detached (i.e. while the removal is still in effect).

Constructor & Destructor Documentation

RemoveDiagramCommand()

RemoveDiagramCommand::RemoveDiagramCommand	(	QETProject *	project,
		Diagram *	diagram,
		QUndoCommand *	parent = nullptr )

RemoveDiagramCommand::RemoveDiagramCommand.

Parameters

project	: project the diagram is removed from
diagram	: the diagram to remove, currently part of project
parent

~RemoveDiagramCommand()

RemoveDiagramCommand::~RemoveDiagramCommand ( )

override

RemoveDiagramCommand::~RemoveDiagramCommand Destroy the diagram only if it is currently detached from the project (i.e. the removal is currently in effect) – otherwise the project owns it and will destroy it itself.

Member Function Documentation

redo()

void RemoveDiagramCommand::redo ( )

override

undo()

void RemoveDiagramCommand::undo ( )

override

Member Data Documentation

m_diagram

Diagram* RemoveDiagramCommand::m_diagram

private

m_owns_diagram

bool RemoveDiagramCommand::m_owns_diagram = false

private

true while the diagram is detached from the project (i.e. the removal is in effect)

m_position

int RemoveDiagramCommand::m_position

private

m_project

QPointer<QETProject> RemoveDiagramCommand::m_project

private

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

• sources/undocommand/removediagramcommand.h
• sources/undocommand/removediagramcommand.cpp