/
qgsdataitem.sip
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qgsdataitem.sip
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class QgsDataItem : QObject
{
%TypeHeaderCode
#include <qgsdataitem.h>
%End
%ConvertToSubClassCode
if (qobject_cast<QgsLayerItem*>(sipCpp))
sipType = sipType_QgsLayerItem;
else if (qobject_cast<QgsErrorItem*>(sipCpp))
sipType = sipType_QgsErrorItem;
else if (qobject_cast<QgsDirectoryItem*>(sipCpp))
sipType = sipType_QgsDirectoryItem;
else if (qobject_cast<QgsFavouritesItem*>(sipCpp))
sipType = sipType_QgsFavouritesItem;
else if (qobject_cast<QgsZipItem*>(sipCpp))
sipType = sipType_QgsZipItem;
else if (qobject_cast<QgsDataCollectionItem*>(sipCpp))
sipType = sipType_QgsDataCollectionItem;
else
sipType = 0;
%End
public:
enum Type
{
Collection,
Directory,
Layer,
Error,
Favourites
};
/** Create new data item. */
QgsDataItem( QgsDataItem::Type type, QgsDataItem* parent /TransferThis/, const QString& name, const QString& path );
virtual ~QgsDataItem();
bool hasChildren();
int rowCount();
/** Create children. Children are not expected to have parent set.
* This method MUST BE THREAD SAFE. */
virtual QVector<QgsDataItem*> createChildren();
enum State
{
NotPopulated, //!< Children not yet created
Populating, //!< Creating children in separate thread (populating or refreshing)
Populated //!< children created
};
//! @note added in 2.8
State state() const;
/** Set item state. It also take care about starting/stopping loading icon animation.
* @param state
* @note added in 2.8
*/
virtual void setState( State state );
//! @deprecated in 2.8, use state()
bool isPopulated();
// Insert new child using alphabetical order based on mName, emits necessary signal to model before and after, sets parent and connects signals
// refresh - refresh populated item, emit signals to model
virtual void addChildItem( QgsDataItem *child /Transfer/, bool refresh = false );
// remove and delete child item, signals to browser are emitted
virtual void deleteChildItem( QgsDataItem * child );
// remove child item but don't delete it, signals to browser are emitted
// returns pointer to the removed item or null if no such item was found
virtual QgsDataItem *removeChildItem( QgsDataItem * child ) /TransferBack/;
virtual bool equal( const QgsDataItem *other );
virtual QWidget *paramWidget() /Factory/;
// list of actions provided by this item - usually used for popup menu on right-click
virtual QList<QAction*> actions();
// whether accepts drag&drop'd layers - e.g. for import
virtual bool acceptDrop();
// try to process the data dropped on this item
virtual bool handleDrop( const QMimeData * /*data*/, Qt::DropAction /*action*/ );
enum Capability
{
NoCapabilities,
SetCrs, //!< Can set CRS on layer or group of layers
Fertile, //!< Can create children. Even items without this capability may have children, but cannot create them, it means that children are created by item ancestors.
Fast //!< createChildren() is fast enough to be run in main thread when refreshing items, most root items (wms,wfs,wcs,postgres...) are considered fast because they are reading data only from QSettings
};
typedef QFlags<QgsDataItem::Capability> Capabilities;
// This will _write_ selected crs in data source
virtual bool setCrs( QgsCoordinateReferenceSystem crs );
//! @deprecated since 2.8, returned type this will changed to Capabilities
virtual Capability capabilities() /Deprecated/;
virtual Capabilities capabilities2() const;
virtual void setCapabilities( const Capabilities& capabilities );
// static methods
// Find child index in vector of items using '==' operator
static int findItem( QVector<QgsDataItem*> items, QgsDataItem * item );
// members
Type type() const;
/** Get item parent. QgsDataItem maintains its own items hierarchy, it does not use
* QObject hierarchy. */
QgsDataItem* parent() const;
/** Set item parent and connect / disconnect parent to / from item signals.
* It does not add itself to parents children (mChildren) */
void setParent( QgsDataItem* parent );
QVector<QgsDataItem*> children() const;
QIcon icon();
QString name() const;
void setName( const QString &name );
QString path() const;
void setPath( const QString );
//! Create path component replacing path separators
static QString pathComponent( const QString &component );
// Because QIcon (QPixmap) must not be used in outside the GUI thread, it is
// not possible to set mIcon in constructor. Either use mIconName/setIconName()
// or implement icon().
void setIcon( const QIcon& icon );
void setIconName( const QString & iconName );
void setToolTip( const QString& msg );
QString toolTip() const;
// deleteLater() items anc clear the vector
static void deleteLater( QVector<QgsDataItem*> &items );
/** Move object and all its descendants to thread */
void moveToThread( QThread * targetThread );
public slots:
// Populate children using children vector created by createChildren()
virtual void populate();
/** Remove children recursively and set as not populated. This is used when refreshing collapsed items. */
virtual void depopulate();
virtual void refresh();
void emitBeginInsertItems( QgsDataItem* parent, int first, int last );
void emitEndInsertItems();
void emitBeginRemoveItems( QgsDataItem* parent, int first, int last );
void emitEndRemoveItems();
void emitDataChanged( QgsDataItem* item );
void emitDataChanged( );
void emitStateChanged( QgsDataItem* item, QgsDataItem::State oldState );
virtual void childrenCreated();
signals:
void beginInsertItems( QgsDataItem* parent, int first, int last );
void endInsertItems();
void beginRemoveItems( QgsDataItem* parent, int first, int last );
void endRemoveItems();
};
QFlags<QgsDataItem::Capability> operator|(QgsDataItem::Capability f1, QFlags<QgsDataItem::Capability> f2);
/** Item that represents a layer that can be opened with one of the providers */
class QgsLayerItem : QgsDataItem
{
%TypeHeaderCode
#include <qgsdataitem.h>
%End
public:
enum LayerType
{
NoType,
Vector,
Raster,
Point,
Line,
Polygon,
TableLayer,
Database,
Table,
Plugin //!< added in 2.10
};
QgsLayerItem( QgsDataItem* parent, const QString& name, const QString& path, const QString& uri, LayerType layerType, const QString& providerKey );
// --- reimplemented from QgsDataItem ---
virtual bool equal( const QgsDataItem *other );
// --- New virtual methods for layer item derived classes ---
// Returns QgsMapLayer::LayerType
QgsMapLayer::LayerType mapLayerType();
// Returns layer uri or empty string if layer cannot be created
QString uri();
// Returns provider key
QString providerKey();
/** Returns the supported CRS
* @note Added in 2.8
*/
QStringList supportedCRS();
/** Returns the supported formats
* @note Added in 2.8
*/
QStringList supportedFormats();
public:
static const QIcon &iconPoint();
static const QIcon &iconLine();
static const QIcon &iconPolygon();
static const QIcon &iconTable();
static const QIcon &iconRaster();
static const QIcon &iconDefault();
virtual QString layerName() const;
};
/** A Collection: logical collection of layers or subcollections, e.g. GRASS location/mapset, database? wms source? */
class QgsDataCollectionItem : QgsDataItem
{
%TypeHeaderCode
#include <qgsdataitem.h>
%End
public:
QgsDataCollectionItem( QgsDataItem* parent, const QString& name, const QString& path = QString::null );
~QgsDataCollectionItem();
void addChild( QgsDataItem *item /Transfer/ );
static const QIcon &iconDir(); // shared icon: open/closed directory
static const QIcon &iconDataCollection(); // default icon for data collection
};
/** A directory: contains subdirectories and layers */
class QgsDirectoryItem : QgsDataCollectionItem
{
%TypeHeaderCode
#include <qgsdataitem.h>
%End
public:
enum Column
{
Name,
Size,
Date,
Permissions,
Owner,
Group,
Type
};
QgsDirectoryItem( QgsDataItem* parent, const QString& name, const QString& path );
~QgsDirectoryItem();
virtual void setState( State state );
QVector<QgsDataItem*> createChildren();
QString dirPath() const;
virtual bool equal( const QgsDataItem *other );
virtual QIcon icon();
virtual QWidget *paramWidget() /Factory/;
/* static QVector<QgsDataProvider*> mProviders; */
//! @note not available via python bindings
// static QVector<QLibrary*> mLibraries;
};
/**
Data item that can be used to report problems (e.g. network error)
*/
class QgsErrorItem : QgsDataItem
{
%TypeHeaderCode
#include <qgsdataitem.h>
%End
public:
QgsErrorItem( QgsDataItem* parent, const QString& error, const QString& path );
~QgsErrorItem();
};
// ---------
class QgsDirectoryParamWidget : QTreeWidget
{
%TypeHeaderCode
#include <qgsdataitem.h>
%End
public:
QgsDirectoryParamWidget( const QString& path, QWidget* parent /TransferThis/ = NULL );
protected:
void mousePressEvent( QMouseEvent* event );
public slots:
void showHideColumn();
};
/** Contains various Favourites directories */
class QgsFavouritesItem : QgsDataCollectionItem
{
%TypeHeaderCode
#include <qgsdataitem.h>
%End
public:
QgsFavouritesItem( QgsDataItem* parent, const QString& name, const QString& path = QString() );
~QgsFavouritesItem();
QVector<QgsDataItem*> createChildren();
void addDirectory( const QString& favIcon );
void removeDirectory( QgsDirectoryItem *item );
static const QIcon &iconFavourites();
};
/** A zip file: contains layers, using GDAL/OGR VSIFILE mechanism */
class QgsZipItem : QgsDataCollectionItem
{
%TypeHeaderCode
#include <qgsdataitem.h>
%End
public:
QgsZipItem( QgsDataItem* parent, const QString& name, const QString& path );
~QgsZipItem();
QVector<QgsDataItem*> createChildren();
const QStringList & getZipFileList();
//! @note not available via python bindings
// static QVector<dataItem_t *> mDataItemPtr;
static QStringList mProviderNames;
static QString vsiPrefix( const QString& uri );
static QgsDataItem* itemFromPath( QgsDataItem* parent, QString path, QString name ) /Factory/;
static QgsDataItem* itemFromPath( QgsDataItem* parent, const QString& filePath, const QString& name, const QString& path ) /Factory,PyName=itemFromFilePath/;
static const QIcon &iconZip();
};