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QgsExpressionBuilderWidget Class Reference

A reusable widget that can be used to build a expression string. More...

#include <qgsexpressionbuilderwidget.h>

Inheritance diagram for QgsExpressionBuilderWidget:
Inheritance graph

Public Slots

void currentChanged (const QModelIndex &index, const QModelIndex &)
void loadAllValues ()
void loadSampleValues ()
void on_btnNewFile_pressed ()
void on_btnRun_pressed ()
void on_btnSaveFile_pressed ()
void on_cmbFileNames_currentIndexChanged (int index)
void on_expressionTree_doubleClicked (const QModelIndex &index)
void on_lblPreview_linkActivated (const QString &link)
void on_mValuesListView_doubleClicked (const QModelIndex &index)
void on_txtExpressionString_textChanged ()
void on_txtSearchEdit_textChanged ()
void on_txtSearchEditValues_textChanged ()
void operatorButtonClicked ()
void showContextMenu (const QPoint &)


void expressionParsed (bool isValid)
 Emitted when the user changes the expression in the widget. More...

Public Member Functions

 QgsExpressionBuilderWidget (QWidget *parent)
 ~QgsExpressionBuilderWidget ()
QgsExpressionContext expressionContext () const
 Returns the expression context for the widget. More...
QString expressionText ()
 Gets the expression string that has been set in the expression area. More...
bool isExpressionValid ()
void loadCodeFromFile (QString path)
 Load code from the given file into the function editor. More...
void loadFieldNames ()
 Loads all the field names from the layer. More...
void loadFieldNames (const QgsFields &fields)
void loadFieldsAndValues (const QMap< QString, QStringList > &fieldValues)
 Loads field names and values from the specified map. More...
void loadFunctionCode (const QString &code)
 Load code into the function editor. More...
void loadRecent (const QString &key)
void newFunctionFile (const QString &fileName="scratch")
 Create a new file in the function editor. More...
void registerItem (const QString &group, const QString &label, const QString &expressionText, const QString &helpText="", QgsExpressionItem::ItemType type=QgsExpressionItem::ExpressionNode, bool highlightedItem=false, int sortOrder=1)
 Registers a node item for the expression builder. More...
void saveFunctionFile (QString fileName)
 Save the current function editor text to the given file. More...
void saveToRecent (const QString &key)
void setExpressionContext (const QgsExpressionContext &context)
 Sets the expression context for the widget. More...
void setExpressionText (const QString &expression)
 Sets the expression string for the widget. More...
void setGeomCalculator (const QgsDistanceArea &da)
 Sets geometry calculator used in distance/area calculations. More...
void setLayer (QgsVectorLayer *layer)
 Sets layer in order to get the fields and values. More...
void updateFunctionFileList (const QString &path)
 Update the list of function files found at the given path. More...
- Public Member Functions inherited from QWidget
 QWidget (QWidget *parent, QFlags< Qt::WindowType > f)
 QWidget (QWidget *parent, const char *name, QFlags< Qt::WindowType > f)
 ~QWidget ()
bool acceptDrops () const
QString accessibleDescription () const
QString accessibleName () const
QList< QAction * > actions () const
void activateWindow ()
void addAction (QAction *action)
void addActions (QList< QAction * > actions)
void adjustSize ()
bool autoFillBackground () const
Qt::BackgroundMode backgroundMode () const
QPoint backgroundOffset () const
BackgroundOrigin backgroundOrigin () const
QPalette::ColorRole backgroundRole () const
QSize baseSize () const
QString caption () const
QWidgetchildAt (int x, int y, bool includeThis) const
QWidgetchildAt (const QPoint &p, bool includeThis) const
QWidgetchildAt (int x, int y) const
QWidgetchildAt (const QPoint &p) const
QRect childrenRect () const
QRegion childrenRegion () const
void clearFocus ()
void clearMask ()
bool close (bool alsoDelete)
bool close ()
QColorGroup colorGroup () const
void constPolish () const
QMargins contentsMargins () const
QRect contentsRect () const
Qt::ContextMenuPolicy contextMenuPolicy () const
QCursor cursor () const
void customContextMenuRequested (const QPoint &pos)
void drawText (const QPoint &p, const QString &s)
void drawText (int x, int y, const QString &s)
WId effectiveWinId () const
void ensurePolished () const
void erase ()
void erase (const QRect &rect)
void erase (const QRegion &rgn)
void erase (int x, int y, int w, int h)
Qt::FocusPolicy focusPolicy () const
QWidgetfocusProxy () const
QWidgetfocusWidget () const
const QFontfont () const
QFontInfo fontInfo () const
QFontMetrics fontMetrics () const
QPalette::ColorRole foregroundRole () const
QRect frameGeometry () const
QSize frameSize () const
const QRectgeometry () const
void getContentsMargins (int *left, int *top, int *right, int *bottom) const
virtual HDC getDC () const
void grabGesture (Qt::GestureType gesture, QFlags< Qt::GestureFlag > flags)
void grabKeyboard ()
void grabMouse ()
void grabMouse (const QCursor &cursor)
int grabShortcut (const QKeySequence &key, Qt::ShortcutContext context)
QGraphicsEffectgraphicsEffect () const
QGraphicsProxyWidgetgraphicsProxyWidget () const
bool hasEditFocus () const
bool hasFocus () const
bool hasMouse () const
bool hasMouseTracking () const
int height () const
virtual int heightForWidth (int w) const
void hide ()
const QPixmapicon () const
void iconify ()
QString iconText () const
QInputContextinputContext ()
Qt::InputMethodHints inputMethodHints () const
virtual QVariant inputMethodQuery (Qt::InputMethodQuery query) const
void insertAction (QAction *before, QAction *action)
void insertActions (QAction *before, QList< QAction * > actions)
bool isActiveWindow () const
bool isAncestorOf (const QWidget *child) const
bool isDesktop () const
bool isDialog () const
bool isEnabled () const
bool isEnabledTo (QWidget *ancestor) const
bool isEnabledToTLW () const
bool isFullScreen () const
bool isHidden () const
bool isInputMethodEnabled () const
bool isMaximized () const
bool isMinimized () const
bool isModal () const
bool isPopup () const
bool isShown () const
bool isTopLevel () const
bool isUpdatesEnabled () const
bool isVisible () const
bool isVisibleTo (QWidget *ancestor) const
bool isVisibleToTLW () const
bool isWindow () const
bool isWindowModified () const
QLayoutlayout () const
Qt::LayoutDirection layoutDirection () const
QLocale locale () const
void lower ()
Qt::HANDLE macCGHandle () const
Qt::HANDLE macQDHandle () const
QPoint mapFrom (QWidget *parent, const QPoint &pos) const
QPoint mapFromGlobal (const QPoint &pos) const
QPoint mapFromParent (const QPoint &pos) const
QPoint mapTo (QWidget *parent, const QPoint &pos) const
QPoint mapToGlobal (const QPoint &pos) const
QPoint mapToParent (const QPoint &pos) const
QRegion mask () const
int maximumHeight () const
QSize maximumSize () const
int maximumWidth () const
int minimumHeight () const
QSize minimumSize () const
virtual QSize minimumSizeHint () const
int minimumWidth () const
void move (int x, int y)
void move (const QPoint &)
QWidgetnativeParentWidget () const
QWidgetnextInFocusChain () const
QRect normalGeometry () const
void overrideWindowFlags (QFlags< Qt::WindowType > flags)
bool ownCursor () const
bool ownFont () const
bool ownPalette () const
virtual QPaintEnginepaintEngine () const
const QPalettepalette () const
QWidgetparentWidget (bool sameWindow) const
QWidgetparentWidget () const
QPlatformWindow * platformWindow () const
QPlatformWindowFormat platformWindowFormat () const
void polish ()
QPoint pos () const
QWidgetpreviousInFocusChain () const
void raise ()
void recreate (QWidget *parent, QFlags< Qt::WindowType > f, const QPoint &p, bool showIt)
QRect rect () const
virtual void releaseDC (HDC hdc) const
void releaseKeyboard ()
void releaseMouse ()
void releaseShortcut (int id)
void removeAction (QAction *action)
void render (QPaintDevice *target, const QPoint &targetOffset, const QRegion &sourceRegion, QFlags< QWidget::RenderFlag > renderFlags)
void render (QPainter *painter, const QPoint &targetOffset, const QRegion &sourceRegion, QFlags< QWidget::RenderFlag > renderFlags)
void repaint (int x, int y, int w, int h, bool b)
void repaint (const QRegion &rgn, bool b)
void repaint ()
void repaint (int x, int y, int w, int h)
void repaint (const QRegion &rgn)
void repaint (bool b)
void repaint (const QRect &rect)
void repaint (const QRect &r, bool b)
void reparent (QWidget *parent, QFlags< Qt::WindowType > f, const QPoint &p, bool showIt)
void reparent (QWidget *parent, const QPoint &p, bool showIt)
void resize (int w, int h)
void resize (const QSize &)
bool restoreGeometry (const QByteArray &geometry)
QByteArray saveGeometry () const
void scroll (int dx, int dy)
void scroll (int dx, int dy, const QRect &r)
void setAcceptDrops (bool on)
void setAccessibleDescription (const QString &description)
void setAccessibleName (const QString &name)
void setActiveWindow ()
void setAttribute (Qt::WidgetAttribute attribute, bool on)
void setAutoFillBackground (bool enabled)
void setBackgroundColor (const QColor &color)
void setBackgroundMode (Qt::BackgroundMode widgetBackground, Qt::BackgroundMode paletteBackground)
void setBackgroundOrigin (BackgroundOrigin background)
void setBackgroundPixmap (const QPixmap &pixmap)
void setBackgroundRole (QPalette::ColorRole role)
void setBaseSize (const QSize &)
void setBaseSize (int basew, int baseh)
void setCaption (const QString &c)
void setContentsMargins (int left, int top, int right, int bottom)
void setContentsMargins (const QMargins &margins)
void setContextMenuPolicy (Qt::ContextMenuPolicy policy)
void setCursor (const QCursor &)
void setDisabled (bool disable)
void setEditFocus (bool enable)
void setEnabled (bool)
void setEraseColor (const QColor &color)
void setErasePixmap (const QPixmap &pixmap)
void setFixedHeight (int h)
void setFixedSize (const QSize &s)
void setFixedSize (int w, int h)
void setFixedWidth (int w)
void setFocus (Qt::FocusReason reason)
void setFocus ()
void setFocusPolicy (Qt::FocusPolicy policy)
void setFocusProxy (QWidget *w)
void setFont (const QFont &)
void setFont (const QFont &f, bool b)
void setForegroundRole (QPalette::ColorRole role)
void setGeometry (int x, int y, int w, int h)
void setGeometry (const QRect &)
void setGraphicsEffect (QGraphicsEffect *effect)
void setHidden (bool hidden)
void setIcon (const QPixmap &i)
void setIconText (const QString &it)
void setInputContext (QInputContext *context)
void setInputMethodEnabled (bool enabled)
void setInputMethodHints (QFlags< Qt::InputMethodHint > hints)
void setKeyCompression (bool b)
void setLayout (QLayout *layout)
void setLayoutDirection (Qt::LayoutDirection direction)
void setLocale (const QLocale &locale)
void setMask (const QBitmap &bitmap)
void setMask (const QRegion &region)
void setMaximumHeight (int maxh)
void setMaximumSize (const QSize &)
void setMaximumSize (int maxw, int maxh)
void setMaximumWidth (int maxw)
void setMinimumHeight (int minh)
void setMinimumSize (int minw, int minh)
void setMinimumSize (const QSize &)
void setMinimumWidth (int minw)
void setMouseTracking (bool enable)
void setPalette (const QPalette &)
void setPalette (const QPalette &p, bool b)
void setPaletteBackgroundColor (const QColor &color)
void setPaletteBackgroundPixmap (const QPixmap &pixmap)
void setPaletteForegroundColor (const QColor &color)
void setParent (QWidget *parent)
void setParent (QWidget *parent, QFlags< Qt::WindowType > f)
void setPlatformWindow (QPlatformWindow *window)
void setPlatformWindowFormat (const QPlatformWindowFormat &format)
void setShortcutAutoRepeat (int id, bool enable)
void setShortcutEnabled (int id, bool enable)
void setShown (bool shown)
void setSizeIncrement (const QSize &)
void setSizeIncrement (int w, int h)
void setSizePolicy (QSizePolicy::Policy hor, QSizePolicy::Policy ver, bool hfw)
void setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical)
void setSizePolicy (QSizePolicy)
void setStatusTip (const QString &)
void setStyle (QStyle *style)
QStylesetStyle (const QString &style)
void setStyleSheet (const QString &styleSheet)
void setToolTip (const QString &)
void setUpdatesEnabled (bool enable)
void setupUi (QWidget *widget)
virtual void setVisible (bool visible)
void setWhatsThis (const QString &)
void setWindowFilePath (const QString &filePath)
void setWindowFlags (QFlags< Qt::WindowType > type)
void setWindowIcon (const QIcon &icon)
void setWindowIconText (const QString &)
void setWindowModality (Qt::WindowModality windowModality)
void setWindowModified (bool)
void setWindowOpacity (qreal level)
void setWindowRole (const QString &role)
void setWindowState (QFlags< Qt::WindowState > windowState)
void setWindowSurface (QWindowSurface *surface)
void setWindowTitle (const QString &)
void show ()
void showFullScreen ()
void showMaximized ()
void showMinimized ()
void showNormal ()
QSize size () const
virtual QSize sizeHint () const
QSize sizeIncrement () const
QSizePolicy sizePolicy () const
void stackUnder (QWidget *w)
QString statusTip () const
QStylestyle () const
QString styleSheet () const
bool testAttribute (Qt::WidgetAttribute attribute) const
QString toolTip () const
QWidgettopLevelWidget () const
bool underMouse () const
void ungrabGesture (Qt::GestureType gesture)
void unsetCursor ()
void unsetFont ()
void unsetLayoutDirection ()
void unsetLocale ()
void unsetPalette ()
void update (const QRect &rect)
void update (const QRegion &rgn)
void update (int x, int y, int w, int h)
void update ()
void updateGeometry ()
bool updatesEnabled () const
QRect visibleRect () const
QRegion visibleRegion () const
QString whatsThis () const
int width () const
QWidgetwindow () const
QString windowFilePath () const
Qt::WindowFlags windowFlags () const
QIcon windowIcon () const
QString windowIconText () const
Qt::WindowModality windowModality () const
qreal windowOpacity () const
QString windowRole () const
Qt::WindowStates windowState () const
QWindowSurface * windowSurface () const
QString windowTitle () const
Qt::WindowType windowType () const
WId winId () const
int x () const
const QX11Infox11Info () const
Qt::HANDLE x11PictureHandle () const
int y () const
- Public Member Functions inherited from QObject
 QObject (QObject *parent)
 QObject (QObject *parent, const char *name)
virtual  ~QObject ()
bool blockSignals (bool block)
QObjectchild (const char *objName, const char *inheritsClass, bool recursiveSearch) const
const QObjectList & children () const
const char * className () const
bool connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const
void deleteLater ()
void destroyed (QObject *obj)
bool disconnect (const QObject *receiver, const char *method)
bool disconnect (const char *signal, const QObject *receiver, const char *method)
void dumpObjectInfo ()
void dumpObjectTree ()
QList< QByteArraydynamicPropertyNames () const
virtual bool eventFilter (QObject *watched, QEvent *event)
findChild (const QString &name) const
QList< T > findChildren (const QRegExp &regExp) const
QList< T > findChildren (const QString &name) const
bool inherits (const char *className) const
void insertChild (QObject *object)
void installEventFilter (QObject *filterObj)
bool isA (const char *className) const
bool isWidgetType () const
void killTimer (int id)
virtual const QMetaObjectmetaObject () const
void moveToThread (QThread *targetThread)
const char * name () const
const char * name (const char *defaultName) const
QString objectName () const
QObjectparent () const
QVariant property (const char *name) const
void removeChild (QObject *object)
void removeEventFilter (QObject *obj)
void setName (const char *name)
void setObjectName (const QString &name)
void setParent (QObject *parent)
bool setProperty (const char *name, const QVariant &value)
bool signalsBlocked () const
int startTimer (int interval)
QThreadthread () const
- Public Member Functions inherited from QPaintDevice
virtual  ~QPaintDevice ()
int colorCount () const
int depth () const
int height () const
int heightMM () const
int logicalDpiX () const
int logicalDpiY () const
int numColors () const
virtual QPaintEnginepaintEngine () const =0
bool paintingActive () const
int physicalDpiX () const
int physicalDpiY () const
int width () const
int widthMM () const
int x11Cells () const
Qt::HANDLE x11Colormap () const
bool x11DefaultColormap () const
bool x11DefaultVisual () const
int x11Depth () const
Display * x11Display () const
int x11Screen () const
void * x11Visual () const

Additional Inherited Members

- Static Public Member Functions inherited from QWidget
QWidgetfind (WId id)
QWidgetkeyboardGrabber ()
QWidgetmouseGrabber ()
void setTabOrder (QWidget *first, QWidget *second)
QWidgetMapper * wmapper ()
- Static Public Member Functions inherited from QObject
bool connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
bool connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
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)
QString tr (const char *sourceText, const char *disambiguation, int n)
QString trUtf8 (const char *sourceText, const char *disambiguation, int n)
- Static Public Member Functions inherited from QPaintDevice
int x11AppCells (int screen)
Qt::HANDLE x11AppColormap (int screen)
bool x11AppDefaultColormap (int screen)
bool x11AppDefaultVisual (int screen)
int x11AppDepth (int screen)
Display * x11AppDisplay ()
int x11AppDpiX (int screen)
int x11AppDpiY (int screen)
Qt::HANDLE x11AppRootWindow (int screen)
int x11AppScreen ()
void * x11AppVisual (int screen)
void x11SetAppDpiX (int dpi, int screen)
void x11SetAppDpiY (int dpi, int screen)
- Public Attributes inherited from QWidget
typedef RenderFlags
- Protected Member Functions inherited from QWidget
virtual void actionEvent (QActionEvent *event)
virtual void changeEvent (QEvent *event)
virtual void closeEvent (QCloseEvent *event)
virtual void contextMenuEvent (QContextMenuEvent *event)
void create (WId window, bool initializeWindow, bool destroyOldWindow)
void destroy (bool destroyWindow, bool destroySubWindows)
virtual void dragEnterEvent (QDragEnterEvent *event)
virtual void dragLeaveEvent (QDragLeaveEvent *event)
virtual void dragMoveEvent (QDragMoveEvent *event)
virtual void dropEvent (QDropEvent *event)
virtual void enterEvent (QEvent *event)
virtual bool event (QEvent *event)
virtual void focusInEvent (QFocusEvent *event)
bool focusNextChild ()
virtual bool focusNextPrevChild (bool next)
virtual void focusOutEvent (QFocusEvent *event)
bool focusPreviousChild ()
virtual void hideEvent (QHideEvent *event)
virtual void inputMethodEvent (QInputMethodEvent *event)
virtual void keyPressEvent (QKeyEvent *event)
virtual void keyReleaseEvent (QKeyEvent *event)
virtual void languageChange ()
virtual void leaveEvent (QEvent *event)
virtual bool macEvent (EventHandlerCallRef caller, EventRef event)
virtual int metric (PaintDeviceMetric m) const
virtual void mouseDoubleClickEvent (QMouseEvent *event)
virtual void mouseMoveEvent (QMouseEvent *event)
virtual void mousePressEvent (QMouseEvent *event)
virtual void mouseReleaseEvent (QMouseEvent *event)
virtual void moveEvent (QMoveEvent *event)
virtual void paintEvent (QPaintEvent *event)
virtual bool qwsEvent (QWSEvent *event)
void resetInputContext ()
virtual void resizeEvent (QResizeEvent *event)
virtual void showEvent (QShowEvent *event)
virtual void tabletEvent (QTabletEvent *event)
void updateMicroFocus ()
virtual void wheelEvent (QWheelEvent *event)
virtual bool winEvent (MSG *message, long *result)
virtual bool x11Event (XEvent *event)
- Protected Member Functions inherited from QObject
bool checkConnectArgs (const char *signal, const QObject *object, const char *method)
virtual void childEvent (QChildEvent *event)
virtual void connectNotify (const char *signal)
virtual void customEvent (QEvent *event)
virtual void disconnectNotify (const char *signal)
int receivers (const char *signal) const
QObjectsender () const
int senderSignalIndex () const
virtual void timerEvent (QTimerEvent *event)
- Protected Member Functions inherited from QPaintDevice
 QPaintDevice ()
- Static Protected Member Functions inherited from QObject
QByteArray normalizeSignalSlot (const char *signalSlot)
- Properties inherited from QWidget
- Properties inherited from QObject

Detailed Description

A reusable widget that can be used to build a expression string.

See QgsExpressionBuilderDialog for exmaple of usage.

Definition at line 144 of file qgsexpressionbuilderwidget.h.

Constructor & Destructor Documentation

QgsExpressionBuilderWidget::QgsExpressionBuilderWidget ( QWidget parent)

Definition at line 32 of file qgsexpressionbuilderwidget.cpp.

QgsExpressionBuilderWidget::~QgsExpressionBuilderWidget ( )

Definition at line 102 of file qgsexpressionbuilderwidget.cpp.

Member Function Documentation

void QgsExpressionBuilderWidget::currentChanged ( const QModelIndex index,
const QModelIndex  

Definition at line 124 of file qgsexpressionbuilderwidget.cpp.

QgsExpressionContext QgsExpressionBuilderWidget::expressionContext ( ) const

Returns the expression context for the widget.

The context is used for the expression preview result and for populating the list of available functions and variables.

See Also
added in QGIS 2.12

Definition at line 184 of file qgsexpressionbuilderwidget.h.

void QgsExpressionBuilderWidget::expressionParsed ( bool  isValid)

Emitted when the user changes the expression in the widget.

Users of this widget should connect to this signal to decide if to let the user continue.

isValidIs true if the expression the user has typed is valid.
QString QgsExpressionBuilderWidget::expressionText ( )

Gets the expression string that has been set in the expression area.

The expression as a string.

Definition at line 497 of file qgsexpressionbuilderwidget.cpp.

bool QgsExpressionBuilderWidget::isExpressionValid ( )

Definition at line 384 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::loadAllValues ( )

Definition at line 695 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::loadCodeFromFile ( QString  path)

Load code from the given file into the function editor.

Definition at line 230 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::loadFieldNames ( )

Loads all the field names from the layer.

Should this really be public couldn't we just do this for the user?

Definition at line 271 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::loadFieldNames ( const QgsFields fields)

Definition at line 281 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::loadFieldsAndValues ( const QMap< QString, QStringList > &  fieldValues)

Loads field names and values from the specified map.

The field values must be quoted appropriately if they are strings.
added in QGIS 2.12

Definition at line 298 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::loadFunctionCode ( const QString code)

Load code into the function editor.

Definition at line 238 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::loadRecent ( const QString key)

Definition at line 407 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::loadSampleValues ( )

Definition at line 682 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::newFunctionFile ( const QString fileName = "scratch")

Create a new file in the function editor.

Definition at line 204 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_btnNewFile_pressed ( )

Definition at line 216 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_btnRun_pressed ( )

Definition at line 148 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_btnSaveFile_pressed ( )

Definition at line 243 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_cmbFileNames_currentIndexChanged ( int  index)

Definition at line 221 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_expressionTree_doubleClicked ( const QModelIndex index)

Definition at line 255 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_lblPreview_linkActivated ( const QString link)

Definition at line 640 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_mValuesListView_doubleClicked ( const QModelIndex index)

Definition at line 649 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_txtExpressionString_textChanged ( )

Definition at line 514 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_txtSearchEdit_textChanged ( )

Definition at line 625 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::on_txtSearchEditValues_textChanged ( )

Definition at line 634 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::operatorButtonClicked ( )

Definition at line 656 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::registerItem ( const QString group,
const QString label,
const QString expressionText,
const QString helpText = "",
QgsExpressionItem::ItemType  type = QgsExpressionItem::ExpressionNode,
bool  highlightedItem = false,
int  sortOrder = 1 

Registers a node item for the expression builder.

groupThe group the item will be show in the tree view. If the group doesn't exsit it will be created.
labelThe label that is show to the user for the item in the tree.
expressionTextThe text that is inserted into the expression area when the user double clicks on the item.
helpTextThe help text that the user will see when item is selected.
typeThe type of the expression item.
highlightedItemset to true to make the item highlighted, which inserts a bold copy of the item at the top level
sortOrdersort ranking for item

Definition at line 341 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::saveFunctionFile ( QString  fileName)

Save the current function editor text to the given file.

Definition at line 166 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::saveToRecent ( const QString key)

Definition at line 389 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::setExpressionContext ( const QgsExpressionContext context)

Sets the expression context for the widget.

The context is used for the expression preview result and for populating the list of available functions and variables.

contextexpression context
See Also
added in QGIS 2.12

Definition at line 507 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::setExpressionText ( const QString expression)

Sets the expression string for the widget.

Definition at line 502 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::setGeomCalculator ( const QgsDistanceArea da)

Sets geometry calculator used in distance/area calculations.

Definition at line 492 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::setLayer ( QgsVectorLayer layer)

Sets layer in order to get the fields and values.

this needs to be called before calling loadFieldNames().

Definition at line 114 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::showContextMenu ( const QPoint pt)

Definition at line 665 of file qgsexpressionbuilderwidget.cpp.

void QgsExpressionBuilderWidget::updateFunctionFileList ( const QString path)

Update the list of function files found at the given path.

Definition at line 189 of file qgsexpressionbuilderwidget.cpp.

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