KTextEditor::Command Class Reference

#include <KTextEditor/Command>

Inheritance diagram for KTextEditor::Command:

Public Member Functions
	Command (const QStringList &cmds, QObject *parent=nullptr)
	~Command () override
const QStringList &	cmds () const
virtual KCompletion *	completionObject (KTextEditor::View *view, const QString &cmdname)
virtual bool	exec (KTextEditor::View *view, const QString &cmd, QString &msg, const KTextEditor::Range &range=KTextEditor::Range::invalid())=0
virtual bool	help (KTextEditor::View *view, const QString &cmd, QString &msg)=0
virtual void	processText (KTextEditor::View *view, const QString &text)
virtual bool	supportsRange (const QString &cmd)
virtual bool	wantsToProcessText (const QString &cmdname)
Public Member Functions inherited from QObject
	QObject (QObject *parent)
QBindable< QString >	bindableObjectName ()
bool	blockSignals (bool block)
const QObjectList &	children () const const
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
void	deleteLater ()
void	destroyed (QObject *obj)
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectInfo () const const
void	dumpObjectTree () const const
QList< QByteArray >	dynamicPropertyNames () const const
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isQuickItemType () const const
bool	isWidgetType () const const
bool	isWindowType () const const
void	killTimer (int id)
virtual const QMetaObject *	metaObject () const const
void	moveToThread (QThread *targetThread)
QString	objectName () const const
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
QVariant	property (const char *name) const const
	Q_CLASSINFO (Name, Value)
	Q_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_GADGET_EXPORT (EXPORT_MACRO)
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_MOC_INCLUDE Q_MOC_INCLUDE
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_OBJECT Q_OBJECT
	Q_PROPERTY (...)
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	Q_SIGNAL Q_SIGNAL
	Q_SIGNALS Q_SIGNALS
	Q_SLOT Q_SLOT
	Q_SLOTS Q_SLOTS
T	qobject_cast (const QObject *object)
T	qobject_cast (QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setObjectName (QAnyStringView name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	setProperty (const char *name, QVariant &&value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)
QThread *	thread () const const

Additional Inherited Members
Public Types inherited from QObject
typedef	QObjectList
Properties inherited from QObject
	objectName
Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
bool	disconnect (const QMetaObject::Connection &connection)
bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
QString	tr (const char *sourceText, const char *disambiguation, int n)
Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	customEvent (QEvent *event)
virtual void	disconnectNotify (const QMetaMethod &signal)
bool	isSignalConnected (const QMetaMethod &signal) const const
int	receivers (const char *signal) const const
QObject *	sender () const const
int	senderSignalIndex () const const
virtual void	timerEvent (QTimerEvent *event)

Detailed Description

An Editor command line command.

Introduction

The Command class represents a command for the editor command line. A command simply consists of a string, for example find. The command auto-registers itself at the Editor. The Editor itself queries the command for a list of accepted strings/commands by calling cmds(). If the command gets invoked the function exec() is called, i.e. you have to implement the reaction in exec(). Whenever the user needs help for a command help() is called.

Command Information

To provide reasonable information about a specific command there are the following accessor functions for a given command string:

• name() returns a label
• description() returns a descriptive text
• category() returns a category into which the command fits.

These getters allow KTextEditor implementations to plug commands into menus and toolbars, so that a user can assign shortcuts.

Command Completion

The Command optionally can show a completion popup to help the user select a valid entry as first parameter to the Command. To this end, return a valid completion item by reiplementing completionObject().

The returned completion object is deleted automatically once it is not needed anymore. Therefore neither delete the completion object yourself nor return the same completion object twice.

Interactive Commands

In case the Command needs to interactively process the text of the parameters, override wantsToProcessText() by returning true and reimplement processText().

A typical example of an iterative command would be the incremental search.

See also

KTextEditor::CommandInterface

Author

Christoph Cullmann <cullm.nosp@m.ann@.nosp@m.kde.o.nosp@m.rg>

Definition at line 70 of file include/ktexteditor/command.h.

Constructor & Destructor Documentation

Command()

Command::Command	(	const QStringList &	cmds,
		QObject *	parent = nullptr )

Constructor with parent.

Will register this command for the commands names given in cmds at the global editor instance.

Definition at line 347 of file ktexteditor.cpp.

~Command()

Command::~Command ( )

override

Virtual destructor.

Will unregister this command at the global editor instance.

Definition at line 356 of file ktexteditor.cpp.

Member Function Documentation

cmds()

const QStringList & KTextEditor::Command::cmds ( ) const

inline

Return a list of strings a command may begin with.

This is the same list the command was constructed with. A string is the start part of a pure text which can be handled by this command, i.e. for the command s/sdl/sdf/g the corresponding string is simply s, and for char:1212 simply char.

Returns

list of supported commands

Definition at line 96 of file include/ktexteditor/command.h.

completionObject()

KCompletion * Command::completionObject ( KTextEditor::View * view, const QString & cmdname )

virtual

Return a KCompletion object that will substitute the command line default one while typing the first argument of the command cmdname.

The text will be added to the command separated by one space character.

Override this method if your command can provide a completion object. The returned completion object is deleted automatically once it is not needed anymore. Therefore neither delete the completion object yourself nor return the same completion object twice.

The default implementation returns a null pointer (nullptr).

Parameters

view	the view the command will work on
cmdname	the command name associated with this request.

Returns

a valid completion object or nullptr, if a completion object is not supported

Reimplemented in KateCommands::CoreCommands, and KateVi::Commands.

Definition at line 369 of file ktexteditor.cpp.

exec()

virtual bool KTextEditor::Command::exec ( KTextEditor::View * view, const QString & cmd, QString & msg, const KTextEditor::Range & range = KTextEditor::Range::invalid() )

pure virtual

Execute the command for the given view and cmd string.

Return the success value and a msg for status. As example we consider a replace command. The replace command would return the number of replaced strings as msg, like "16 replacements made." If an error occurred in the usage it would return false and set the msg to something like "missing argument." or such.

If a non-invalid range is given, the command shall be executed on that range. supportsRange() tells if the command supports that.

Returns

true on success, otherwise false

Implemented in KateCommandLineScript, KateCommands::Character, KateCommands::CoreCommands, KateCommands::Date, KateCommands::SedReplace, KateScriptManager, and KateVi::Commands.

help()

virtual bool KTextEditor::Command::help ( KTextEditor::View * view, const QString & cmd, QString & msg )

pure virtual

Shows help for the given view and cmd string.

If your command has a help text for cmd you have to return true and set the msg to a meaningful text. The help text is embedded by the Editor in a Qt::RichText enabled widget, e.g. a QToolTip.

Returns

true if your command has a help text, otherwise false

Implemented in KateCommandLineScript, KateCommands::Character, KateCommands::CoreCommands, KateCommands::Date, KateCommands::SedReplace, KateScriptManager, and KateVi::Commands.

processText()

void Command::processText ( KTextEditor::View * view, const QString & text )

virtual

This is called by the command line each time the argument text for the command changed, if wantsToProcessText() returns true.

Parameters

view	the current view
text	the current command text typed by the user

See also

wantsToProcessText()

Definition at line 379 of file ktexteditor.cpp.

supportsRange()

bool Command::supportsRange ( const QString & cmd )

virtual

Find out if a given command can act on a range.

This is used for checking if a command should be called when the user also gave a range or if an error should be raised.

Returns

true if command supports acting on a range of lines, false not. The default implementation returns false.

Reimplemented in KateCommandLineScript, KateCommands::CoreCommands, KateCommands::SedReplace, and KateVi::Commands.

Definition at line 364 of file ktexteditor.cpp.

wantsToProcessText()

bool Command::wantsToProcessText ( const QString & cmdname )

virtual

Check, whether the command wants to process text interactively for the given command with name cmdname.

If you return true, the command's processText() method is called whenever the text in the command line changed.

Reimplement this to return true, if your commands wants to process the text while typing.

Parameters

cmdname

the command name associated with this query.

Returns

true, if your command wants to process text interactively, otherwise false

See also

processText()

Definition at line 374 of file ktexteditor.cpp.

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

• include/ktexteditor/command.h
• ktexteditor.cpp