Class: QgsWidgetWrapper¶
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class
qgis.gui.
QgsWidgetWrapper
(vl: QgsVectorLayer, editor: QWidget = None, parent: QWidget = None)¶ Bases:
PyQt5.QtCore.QObject
Create a new widget wrapper
- Parameters
vl (QgsVectorLayer) – The layer on which the field is
editor (QWidget = None) – An editor widget. Can be NULL if one should be autogenerated.
parent (QWidget = None) – A parent widget for this widget wrapper and the created widget.
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.
Methods
Use this inside your overridden classes to access the configuration.
Returns information about the context in which this widget is shown
This method should create a new widget with the provided parent.
Returns a reference to the editor widget’s property collection, used for data defined overrides.
Will return a wrapper for a given widget
This method should initialize the editor widget with runtime data.
Returns the vector layer associated with the widget.
Notify this widget, that the containing form is about to save and that any pending changes should be pushed to the edit buffer or they might be lost.
Returns the editor widget property definitions.
Will set the config of this wrapper to the specified config.
Set the context in which this widget is shown
Sets the editor widget’s property collection, used for data defined overrides.
Is used to enable or disable the edit functionality of the managed widget.
Is called, when the value of the widget needs to be changed.
Returns true if the widget has been properly initialized.
Access the widget managed by this wrapper
Signals
Signal when
QgsAttributeEditorContext
mContext changedAttributes
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DocumentViewerContent
= 1¶
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class
Property
¶ Bases:
int
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RootPath
= 0¶
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childEvent
()¶
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config
(self, key: str, defaultVal: Any = None) → Any¶ Use this inside your overridden classes to access the configuration.
- Parameters
key (str) – The configuration option you want to load
defaultVal (Any = None) – Default value
- Return type
Any
- Returns
the value assigned to this configuration option
config(self) -> Dict[str, Any] Returns the whole config
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connectNotify
()¶
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context
(self) → QgsAttributeEditorContext¶ Returns information about the context in which this widget is shown
- Return type
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contextChanged
¶ Signal when
QgsAttributeEditorContext
mContext changedNew in version 3.4: [signal]
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createWidget
(self, parent: QWidget) → QWidget¶ This method should create a new widget with the provided parent. This will only be called if the form did not already provide a widget, so it is not guaranteed to be called! You should not do initialization stuff, which also has to be done for custom editor widgets inside this method. Things like filling comboboxes and assigning other data which will also be used to make widgets on forms created in the QtDesigner usable should be assigned in initWidget().
- Parameters
parent (QWidget) – You should set this parent on the created widget.
- Return type
QWidget
- Returns
A new widget
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customEvent
()¶
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dataDefinedProperties
(self) → QgsPropertyCollection¶ Returns a reference to the editor widget’s property collection, used for data defined overrides.
See also
See also
Property
New in version 3.0.
- Return type
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disconnectNotify
()¶
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fromWidget
(widget: QWidget) → QgsWidgetWrapper¶ Will return a wrapper for a given widget
- Parameters
widget (QWidget) – The widget which was created by a wrapper
- Return type
- Returns
The wrapper for the widget or NULL
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initWidget
(self, editor: QWidget)¶ This method should initialize the editor widget with runtime data. Fill your comboboxes here.
- Parameters
editor (QWidget) – The widget which will represent this attribute editor in a form.
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isSignalConnected
()¶
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layer
(self) → QgsVectorLayer¶ Returns the vector layer associated with the widget.
- Return type
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notifyAboutToSave
(self)¶ Notify this widget, that the containing form is about to save and that any pending changes should be pushed to the edit buffer or they might be lost.
New in version 3.2.
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propertyDefinitions
() → object¶ Returns the editor widget property definitions.
New in version 3.0.
- Return type
object
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receivers
()¶
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sender
()¶
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senderSignalIndex
()¶
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setConfig
(self, config: Dict[str, Any])¶ Will set the config of this wrapper to the specified config.
- Parameters
config (Dict[str) – The config for this wrapper
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setContext
(self, context: QgsAttributeEditorContext)¶ Set the context in which this widget is shown
- Parameters
context (QgsAttributeEditorContext) – context information
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setDataDefinedProperties
(self, collection: QgsPropertyCollection)¶ Sets the editor widget’s property collection, used for data defined overrides.
- Parameters
collection (QgsPropertyCollection) – property collection. Existing properties will be replaced.
See also
See also
Property
New in version 3.0.
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setEnabled
(self, enabled: bool)¶ Is used to enable or disable the edit functionality of the managed widget. By default this will not change the enabled state of the widget
- Parameters
enabled (bool) – Enable or Disable?
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setFeature
(self, feature: QgsFeature)¶ Is called, when the value of the widget needs to be changed. Update the widget representation to reflect the new value.
- Parameters
feature (QgsFeature) – The new feature
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timerEvent
()¶
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valid
(self) → bool¶ Returns true if the widget has been properly initialized. This acts as hint for the calling party if this wrapper can be used after initializing it. If it cannot be used this is a hint to the caller that he may try to find another suitable widget type instead.
- Return type
bool
- Returns
Validity status of this widget.
New in version 2.12.
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widget
(self) → QWidget¶ Access the widget managed by this wrapper
- Return type
QWidget
- Returns
The widget