QgsLayerTreeRegistryBridge Class Reference

Listens to the updates in map layer registry and does changes in layer tree. More...

#include <qgslayertreeregistrybridge.h>

Inheritance diagram for QgsLayerTreeRegistryBridge:

Signals
void	addedLayersToLayerTree (const QList< QgsMapLayer * > &layers)
	Tell others we have just added layers to the tree (used in QGIS to auto-select first newly added layer) More...

Public Member Functions
	QgsLayerTreeRegistryBridge (QgsLayerTreeGroup *root, QgsProject *project, QObject *parent=nullptr)
	Create the instance that synchronizes given project with a layer tree root. More...
bool	isEnabled () const
bool	newLayersVisible () const
void	setEnabled (bool enabled)
void	setLayerInsertionPoint (QgsLayerTreeGroup *parentGroup, int index)
	Set where the new layers should be inserted - can be used to follow current selection. More...
void	setNewLayersVisible (bool enabled)

Protected Slots
void	groupRemovedChildren ()
void	groupWillRemoveChildren (QgsLayerTreeNode *node, int indexFrom, int indexTo)
void	layersAdded (const QList< QgsMapLayer * > &layers)
void	layersWillBeRemoved (const QStringList &layerIds)
void	removeLayersFromRegistry (const QStringList &layerIds)

Protected Attributes
bool	mEnabled
QgsLayerTreeGroup *	mInsertionPointGroup = nullptr
int	mInsertionPointIndex
QStringList	mLayerIdsForRemoval
bool	mNewLayersVisible
QgsProject *	mProject = nullptr
bool	mRegistryRemovingLayers
QgsLayerTreeGroup *	mRoot = nullptr

Detailed Description

Listens to the updates in map layer registry and does changes in layer tree.

When connected to a layer tree, any layers added to the map layer registry will be also added to the layer tree. Similarly, map layers that are removed from registry will be removed from the layer tree.

If a layer is completely removed from the layer tree, it will be also removed from the map layer registry.

Since

QGIS 2.4

Definition at line 44 of file qgslayertreeregistrybridge.h.

Constructor & Destructor Documentation

QgsLayerTreeRegistryBridge::QgsLayerTreeRegistryBridge ( QgsLayerTreeGroup *  root, QgsProject *  project, QObject *  parent = nullptr  )

explicit

Create the instance that synchronizes given project with a layer tree root.

Definition at line 23 of file qgslayertreeregistrybridge.cpp.

Member Function Documentation

void QgsLayerTreeRegistryBridge::addedLayersToLayerTree ( const QList< QgsMapLayer * > &  layers )

signal

Tell others we have just added layers to the tree (used in QGIS to auto-select first newly added layer)

Since

QGIS 2.6

void QgsLayerTreeRegistryBridge::groupRemovedChildren ( )

protectedslot

Definition at line 126 of file qgslayertreeregistrybridge.cpp.

void QgsLayerTreeRegistryBridge::groupWillRemoveChildren ( QgsLayerTreeNode *  node, int  indexFrom, int  indexTo  )

protectedslot

Definition at line 113 of file qgslayertreeregistrybridge.cpp.

bool QgsLayerTreeRegistryBridge::isEnabled ( ) const

inline

Definition at line 52 of file qgslayertreeregistrybridge.h.

void QgsLayerTreeRegistryBridge::layersAdded ( const QList< QgsMapLayer * > &  layers )

protectedslot

Definition at line 46 of file qgslayertreeregistrybridge.cpp.

void QgsLayerTreeRegistryBridge::layersWillBeRemoved ( const QStringList &  layerIds )

protectedslot

Definition at line 75 of file qgslayertreeregistrybridge.cpp.

bool QgsLayerTreeRegistryBridge::newLayersVisible ( ) const

inline

Definition at line 55 of file qgslayertreeregistrybridge.h.

void QgsLayerTreeRegistryBridge::removeLayersFromRegistry ( const QStringList &  layerIds )

protectedslot

Definition at line 147 of file qgslayertreeregistrybridge.cpp.

void QgsLayerTreeRegistryBridge::setEnabled ( bool  enabled )

inline

Definition at line 51 of file qgslayertreeregistrybridge.h.

void QgsLayerTreeRegistryBridge::setLayerInsertionPoint	(	QgsLayerTreeGroup *	parentGroup,
		int	index
	)

Set where the new layers should be inserted - can be used to follow current selection.

By default it is root group with zero index.

Definition at line 40 of file qgslayertreeregistrybridge.cpp.

void QgsLayerTreeRegistryBridge::setNewLayersVisible ( bool  enabled )

inline

Definition at line 54 of file qgslayertreeregistrybridge.h.

Member Data Documentation

bool QgsLayerTreeRegistryBridge::mEnabled

protected

Definition at line 85 of file qgslayertreeregistrybridge.h.

QgsLayerTreeGroup* QgsLayerTreeRegistryBridge::mInsertionPointGroup = nullptr

protected

Definition at line 88 of file qgslayertreeregistrybridge.h.

int QgsLayerTreeRegistryBridge::mInsertionPointIndex

protected

Definition at line 89 of file qgslayertreeregistrybridge.h.

QStringList QgsLayerTreeRegistryBridge::mLayerIdsForRemoval

protected

Definition at line 83 of file qgslayertreeregistrybridge.h.

bool QgsLayerTreeRegistryBridge::mNewLayersVisible

protected

Definition at line 86 of file qgslayertreeregistrybridge.h.

QgsProject* QgsLayerTreeRegistryBridge::mProject = nullptr

protected

Definition at line 82 of file qgslayertreeregistrybridge.h.

bool QgsLayerTreeRegistryBridge::mRegistryRemovingLayers

protected

Definition at line 84 of file qgslayertreeregistrybridge.h.

QgsLayerTreeGroup* QgsLayerTreeRegistryBridge::mRoot = nullptr

protected

Definition at line 81 of file qgslayertreeregistrybridge.h.

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

• /build/qgis-3.4.15+24xenial/src/core/layertree/qgslayertreeregistrybridge.h
• /build/qgis-3.4.15+24xenial/src/core/layertree/qgslayertreeregistrybridge.cpp