A QGIS expression editor based on QScintilla2. More...

#include <qgscodeeditorexpression.h>

Inheritance diagram for QgsCodeEditorExpression:

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Public Member Functions
	QgsCodeEditorExpression (QWidget *parent=nullptr)
	Constructor for QgsCodeEditorExpression.

Qgis::ScriptLanguage	language () const override
	Returns the associated scripting language.

void	setExpressionContext (const QgsExpressionContext &context)
	Variables and functions from this expression context will be added to the API.

void	setFields (const QgsFields &fields)
	Field names will be added to the API.

Public Member Functions inherited from QgsCodeEditor
	QgsCodeEditor (QWidget *parent=nullptr, const QString &title=QString(), bool folding=false, bool margin=false, QgsCodeEditor::Flags flags=QgsCodeEditor::Flags(), QgsCodeEditor::Mode mode=QgsCodeEditor::Mode::ScriptEditor)
	Construct a new code editor.

void	addWarning (int lineNumber, const QString &warning)
	Adds a warning message and indicator to the specified a lineNumber.

virtual void	callTip () override

void	clearWarnings ()
	Clears all warning messages from the editor.

bool	foldingVisible ()
	Returns `true` if the folding controls are visible in the editor.

QStringList	history () const
	Returns the list of commands previously executed in the editor.

void	insertText (const QString &text)
	Insert text at cursor position, or replace any selected text if user has made a selection.

QgsCodeInterpreter *	interpreter () const
	Returns the attached code interpreter, or `nullptr` if not set.

bool	isCursorOnLastLine () const
	Returns `true` if the cursor is on the last line of the document.

virtual Qgis::ScriptLanguageCapabilities	languageCapabilities () const
	Returns the associated scripting language capabilities.

int	linearPosition () const
	Convenience function to return the cursor position as a linear index.

bool	lineNumbersVisible () const
	Returns whether line numbers are visible in the editor.

Q_DECL_DEPRECATED bool	marginVisible ()
	Returns whether margins are in a visible state.

QgsCodeEditor::Mode	mode () const
	Returns the code editor mode.

int	selectionEnd () const
	Convenience function to return the end of the selection as a linear index Contrary to the getSelection method, this method returns the cursor position if no selection is made.

int	selectionStart () const
	Convenience function to return the start of the selection as a linear index Contrary to the getSelection method, this method returns the cursor position if no selection is made.

void	setCustomAppearance (const QString &scheme=QString(), const QMap< QgsCodeEditorColorScheme::ColorRole, QColor > &customColors=QMap< QgsCodeEditorColorScheme::ColorRole, QColor >(), const QString &fontFamily=QString(), int fontSize=0)
	Sets a custom appearance for the widget, disconnecting it from using the standard appearance taken from QSettings.

void	setFoldingVisible (bool folding)
	Set whether the folding controls are visible in the editor.

void	setHistoryFilePath (const QString &path)
	Sets the file path to use for recording and retrieving previously executed commands.

void	setInterpreter (QgsCodeInterpreter *newInterpreter)
	Sets an attached code interpreter for executing commands when the editor is in the QgsCodeEditor::Mode::CommandInput mode.

void	setLinearPosition (int position)
	Convenience function to set the cursor position as a linear index.

void	setLinearSelection (int start, int end)
	Convenience function to set the selection using linear indexes.

void	setLineNumbersVisible (bool visible)
	Sets whether line numbers should be visible in the editor.

Q_DECL_DEPRECATED void	setMarginVisible (bool margin)
	Set margin visible state.

void	setTitle (const QString &title)
	Set the widget title.

int	wrapPosition (int line=-1)
	Returns the linear position of the start of the last wrapped part for the specified line, or for the current line if line = -1 If wrapping is disabled, returns -1 instead.

Protected Member Functions
void	initializeLexer () override
	Called when the dialect specific code lexer needs to be initialized (or reinitialized).

Protected Member Functions inherited from QgsCodeEditor
void	contextMenuEvent (QContextMenuEvent *event) override

bool	eventFilter (QObject watched, QEvent event) override

void	focusOutEvent (QFocusEvent *event) override

void	keyPressEvent (QKeyEvent *event) override

QColor	lexerColor (QgsCodeEditorColorScheme::ColorRole role) const
	Returns the color to use in the lexer for the specified role.

QFont	lexerFont () const
	Returns the font to use in the lexer.

virtual void	populateContextMenu (QMenu *menu)
	Called when the context menu for the widget is about to be shown, after it has been fully populated with the standard actions created by the base class.

virtual QString	reformatCodeString (const QString &string)
	Applies code reformatting to a string and returns the result.

void	runPostLexerConfigurationTasks ()
	Performs tasks which must be run after a lexer has been set for the widget.

virtual void	showMessage (const QString &title, const QString &message, Qgis::MessageLevel level)
	Shows a user facing message (eg a warning message).

void	updatePrompt ()
	Triggers an update of the interactive prompt part of the editor.

void	updateSoftHistory ()
	Updates the soft history by storing the current editor text in the history.

Additional Inherited Members
Public Types inherited from QgsCodeEditor
enum class	Flag : int { CodeFolding = 1 << 0 , ImmediatelyUpdateHistory = 1 << 1 }
	Flags controlling behavior of code editor. More...

typedef QFlags< Flag >	Flags
	Flags controlling behavior of code editor.

enum class	MarginRole : int { LineNumbers = 0 , ErrorIndicators = 1 , FoldingControls = 2 }
	Margin roles. More...

enum class	Mode { ScriptEditor , OutputDisplay , CommandInput }
	Code editor modes. More...

Public Slots inherited from QgsCodeEditor
virtual bool	checkSyntax ()
	Applies syntax checking to the editor.

void	clearPersistentHistory ()
	Clears the entire persistent history of commands run in the editor.

void	clearSessionHistory ()
	Clears the history of commands run in the current session.

virtual void	moveCursorToEnd ()
	Moves the cursor to the end of the document and scrolls to ensure it is visible.

virtual void	moveCursorToStart ()
	Moves the cursor to the start of the document and scrolls to ensure it is visible.

void	reformatCode ()
	Applies code reformatting to the editor.

void	removeHistoryCommand (int index)
	Removes the command at the specified index from the history of the code editor.

void	runCommand (const QString &command, bool skipHistory=false)
	Runs a command in the editor.

void	showHistory ()
	Shows the command history dialog.

void	showNextCommand ()
	Shows the next command from the session in the editor.

void	showPreviousCommand ()
	Shows the previous command from the session in the editor.

virtual void	toggleComment ()
	Toggle comment for the selected text.

bool	writeHistoryFile ()
	Stores the commands executed in the editor to the persistent history file.

Signals inherited from QgsCodeEditor
void	helpRequested (const QString &word)
	Emitted when documentation was requested for the specified word.

void	persistentHistoryCleared ()
	Emitted when the persistent history of commands run in the editor is cleared.

void	sessionHistoryCleared ()
	Emitted when the history of commands run in the current session is cleared.

Static Public Member Functions inherited from QgsCodeEditor
static QColor	color (QgsCodeEditorColorScheme::ColorRole role)
	Returns the color to use in the editor for the specified role.

static QColor	defaultColor (QgsCodeEditorColorScheme::ColorRole role, const QString &theme=QString())
	Returns the default color for the specified role.

static QFont	getMonospaceFont ()
	Returns the monospaced font to use for code editors.

static QString	languageToString (Qgis::ScriptLanguage language)
	Returns a user-friendly, translated name of the specified script language.

static void	setColor (QgsCodeEditorColorScheme::ColorRole role, const QColor &color)
	Sets the color to use in the editor for the specified role.

Static Public Attributes inherited from QgsCodeEditor
static constexpr int	SEARCH_RESULT_INDICATOR = QsciScintilla::INDIC_MAX - 1
	Indicator index for search results.

static const QgsSettingsEntryBool *	settingContextHelpHover

static QgsSettingsTreeNode *	sTreeCodeEditor = QgsSettingsTree::sTreeGui->createChildNode( QStringLiteral( "code-editor" ) )

Static Protected Member Functions inherited from QgsCodeEditor
static bool	isFixedPitch (const QFont &font)
	Returns `true` if a font is a fixed pitch font.

Detailed Description

A QGIS expression editor based on QScintilla2.

Adds syntax highlighting and code autocompletion.

Since: QGIS 3.4

Definition at line 36 of file qgscodeeditorexpression.h.

Constructor & Destructor Documentation

◆ QgsCodeEditorExpression()

QgsCodeEditorExpression::QgsCodeEditorExpression ( QWidget * parent = nullptr )

Constructor for QgsCodeEditorExpression.

Definition at line 23 of file qgscodeeditorexpression.cpp.

Member Function Documentation

◆ initializeLexer()

void QgsCodeEditorExpression::initializeLexer ( )

overrideprotectedvirtual

Called when the dialect specific code lexer needs to be initialized (or reinitialized).

The default implementation does nothing.

Since: QGIS 3.16

Reimplemented from QgsCodeEditor.

Definition at line 110 of file qgscodeeditorexpression.cpp.

◆ language()

Qgis::ScriptLanguage QgsCodeEditorExpression::language ( ) const

overridevirtual

Returns the associated scripting language.

Since: QGIS 3.30

Reimplemented from QgsCodeEditor.

Definition at line 34 of file qgscodeeditorexpression.cpp.

◆ setExpressionContext()

void QgsCodeEditorExpression::setExpressionContext ( const QgsExpressionContext & context )

Variables and functions from this expression context will be added to the API.

Will also reload all globally registered functions.

Definition at line 39 of file qgscodeeditorexpression.cpp.

◆ setFields()

void QgsCodeEditorExpression::setFields ( const QgsFields & fields )

Field names will be added to the API.

Definition at line 98 of file qgscodeeditorexpression.cpp.

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

/build/qgis-3.41.0+git20241119+45a0abf3bec+99sid/src/gui/codeeditors/qgscodeeditorexpression.h
/build/qgis-3.41.0+git20241119+45a0abf3bec+99sid/src/gui/codeeditors/qgscodeeditorexpression.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members