AppendText Class Reference

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Inheritance diagram for AppendText:

Collaboration diagram for AppendText:

Public Member Functions
	AppendText (QString *doc, const QString &text)
void	undo () override
	Reverts a change to the document.
void	redo () override
	Applies a change to the document.
Public Member Functions inherited from QUndoCommand
	QUndoCommand (QUndoCommand *parent=nullptr)
	Constructs a QUndoCommand object with parent parent.
	QUndoCommand (const QString &text, QUndoCommand *parent=nullptr)
	Constructs a QUndoCommand object with the given parent and text.
virtual	~QUndoCommand ()
	Destroys the QUndoCommand object and all child commands.
virtual void	undo ()
	Reverts a change to the document.
virtual void	redo ()
	Applies a change to the document.
QString	text () const
	Returns a short text string describing what this command does; for example, "insert text".
QString	actionText () const
void	setText (const QString &text)
	Sets the command's text to be the text specified.
bool	isObsolete () const
void	setObsolete (bool obsolete)
virtual int	id () const
	Returns the ID of this command.
virtual bool	mergeWith (const QUndoCommand *other)
	Attempts to merge this command with command.
int	childCount () const
const QUndoCommand *	child (int index) const

Detailed Description

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Definition at line 5 of file src_gui_util_qundostack.cpp.

Constructor & Destructor Documentation

AppendText()

AppendText::AppendText ( QString *  doc, const QString &  text  )

inline

Definition at line 8 of file src_gui_util_qundostack.cpp.

References QUndoCommand::setText().

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Member Function Documentation

redo()

void AppendText::redo ( )

inlineoverridevirtual

Applies a change to the document.

This function must be implemented in the derived class. Calling QUndoStack::push(), QUndoStack::undo() or QUndoStack::redo() from this function leads to undefined beahavior.

The default implementation calls redo() on all child commands.

See also

undo()

Reimplemented from QUndoCommand.

Definition at line 12 of file src_gui_util_qundostack.cpp.

References QString::append().

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undo()

void AppendText::undo ( )

inlineoverridevirtual

Reverts a change to the document.

After undo() is called, the state of the document should be the same as before redo() was called. This function must be implemented in the derived class. Calling QUndoStack::push(), QUndoStack::undo() or QUndoStack::redo() from this function leads to undefined beahavior.

The default implementation calls undo() on all child commands in reverse order.

See also

redo()

Reimplemented from QUndoCommand.

Definition at line 10 of file src_gui_util_qundostack.cpp.

References QString::chop(), and QString::length().

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

• qtbase/src/gui/doc/snippets/code/src_gui_util_qundostack.cpp