QGIS API Documentation  2.14.0-Essen
Signals | Public Member Functions | Protected Slots | Protected Member Functions | Protected Attributes | List of all members
QgsSearchWidgetWrapper Class Referenceabstract

Manages an editor widget Widget and wrapper share the same parent. More...

#include <qgssearchwidgetwrapper.h>

Inheritance diagram for QgsSearchWidgetWrapper:
Inheritance graph
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Signals

void expressionChanged (const QString &exp)
 Emitted whenever the expression changes. More...
 

Public Member Functions

 QgsSearchWidgetWrapper (QgsVectorLayer *vl, int fieldIdx, QWidget *parent=nullptr)
 Create a new widget wrapper. More...
 
virtual bool applyDirectly ()=0
 If this is true, then this search widget should take effect directly when its expression changes. More...
 
virtual QString expression ()=0
 Will be used to access the widget's value. More...
 
- Public Member Functions inherited from QgsWidgetWrapper
 QgsWidgetWrapper (QgsVectorLayer *vl, QWidget *editor=nullptr, QWidget *parent=nullptr)
 Create a new widget wrapper. More...
 
QVariant config (const QString &key, const QVariant &defaultVal=QVariant()) const
 Use this inside your overridden classes to access the configuration. More...
 
QgsEditorWidgetConfig config () const
 Returns the whole config. More...
 
const QgsAttributeEditorContextcontext () const
 Returns information about the context in which this widget is shown. More...
 
QgsVectorLayerlayer () const
 Access the QgsVectorLayer, you are working on. More...
 
void setConfig (const QgsEditorWidgetConfig &config)
 Will set the config of this wrapper to the specified config. More...
 
void setContext (const QgsAttributeEditorContext &context)
 Set the context in which this widget is shown. More...
 
virtual bool valid () const =0
 Return true if the widget has been properly initialized. More...
 
QWidgetwidget ()
 Access the widget managed by this wrapper. More...
 
template<class T >
T * widget ()
 Access the widget managed by this wrapper and cast it to a given type Example: QPushButton* pb = wrapper->widget<QPushButton*>();. More...
 
- 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 event (QEvent *e)
 
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
 

Protected Slots

virtual void setExpression (QString value)=0
 
void setFeature (const QgsFeature &feature) override
 

Protected Member Functions

void clearExpression ()
 clears the expression to search for all features More...
 
- Protected Member Functions inherited from QgsWidgetWrapper
virtual QWidgetcreateWidget (QWidget *parent)=0
 This method should create a new widget with the provided parent. More...
 
virtual void initWidget (QWidget *editor)
 This method should initialize the editor widget with runtime data. More...
 
- 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 Attributes

QString mExpression
 
int mFieldIdx
 

Additional Inherited Members

- Public Slots inherited from QgsWidgetWrapper
virtual void setEnabled (bool enabled)
 Is used to enable or disable the edit functionality of the managed widget. More...
 
virtual void setFeature (const QgsFeature &feature)=0
 Is called, when the value of the widget needs to be changed. More...
 
- Static Public Member Functions inherited from QgsWidgetWrapper
static QgsWidgetWrapperfromWidget (QWidget *widget)
 Will return a wrapper for a given widget. More...
 
- 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 Protected Member Functions inherited from QObject
QByteArray normalizeSignalSlot (const char *signalSlot)
 
- Properties inherited from QObject
 objectName
 

Detailed Description

Manages an editor widget Widget and wrapper share the same parent.

A wrapper controls one attribute editor widget and is able to create a default widget or use a pre-existent widget. It is able to set the widget to the value implied by a field of a vector layer, or return the value it currently holds. Every time it is changed it has to emit a valueChanged signal. If it fails to do so, there is no guarantee that the changed status of the widget will be saved.

Definition at line 40 of file qgssearchwidgetwrapper.h.

Constructor & Destructor Documentation

QgsSearchWidgetWrapper::QgsSearchWidgetWrapper ( QgsVectorLayer vl,
int  fieldIdx,
QWidget parent = nullptr 
)
explicit

Create a new widget wrapper.

Parameters
vlThe layer on which the field is
fieldIdxThe field which will be controlled
parentA parent widget for this widget wrapper and the created widget.

Definition at line 23 of file qgssearchwidgetwrapper.cpp.

Member Function Documentation

virtual bool QgsSearchWidgetWrapper::applyDirectly ( )
pure virtual

If this is true, then this search widget should take effect directly when its expression changes.

Implemented in QgsValueRelationSearchWidgetWrapper, QgsDefaultSearchWidgetWrapper, and QgsValueMapSearchWidgetWrapper.

void QgsSearchWidgetWrapper::clearExpression ( )
protected

clears the expression to search for all features

Definition at line 36 of file qgssearchwidgetwrapper.cpp.

virtual QString QgsSearchWidgetWrapper::expression ( )
pure virtual

Will be used to access the widget's value.

Read the value from the widget and return it properly formatted to be saved in the attribute.

If an invalid variant is returned this will be interpreted as no change. Be sure to return a NULL QVariant if it should be set to NULL.

Returns
The current value the widget represents

Implemented in QgsValueRelationSearchWidgetWrapper, QgsDefaultSearchWidgetWrapper, and QgsValueMapSearchWidgetWrapper.

void QgsSearchWidgetWrapper::expressionChanged ( const QString exp)
signal

Emitted whenever the expression changes.

Parameters
expThe new search expression
virtual void QgsSearchWidgetWrapper::setExpression ( QString  value)
protectedpure virtualslot
void QgsSearchWidgetWrapper::setFeature ( const QgsFeature feature)
overrideprotectedslot

Definition at line 31 of file qgssearchwidgetwrapper.cpp.

Member Data Documentation

QString QgsSearchWidgetWrapper::mExpression
protected

Definition at line 86 of file qgssearchwidgetwrapper.h.

int QgsSearchWidgetWrapper::mFieldIdx
protected

Definition at line 87 of file qgssearchwidgetwrapper.h.


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