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87 lines
2.8 KiB
Plaintext
87 lines
2.8 KiB
Plaintext
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/** \ingroup gui
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Handler for missing layers within project.
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Gives user a chance to select path to the missing layers.
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*/
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class QgsProjectBadLayerGuiHandler : QObject, QgsProjectBadLayerHandler
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{
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%TypeHeaderCode
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#include <qgsprojectbadlayerguihandler.h>
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%End
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public:
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QgsProjectBadLayerGuiHandler();
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/** Implementation of the handler */
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virtual void handleBadLayers( const QList<QDomNode>& layers, const QDomDocument& projectDom );
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/** Flag to store the Ignore button press of MessageBox used by QgsLegend */
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static bool mIgnore;
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protected:
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//! file data representation
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enum DataType { IS_VECTOR, IS_RASTER, IS_BOGUS };
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//! the three flavors for data
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enum ProviderType { IS_FILE, IS_DATABASE, IS_URL, IS_Unknown };
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/** Returns data type associated with the given QgsProject file Dom node
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The Dom node should represent the state associated with a specific layer.
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*/
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DataType dataType( QDomNode & layerNode );
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/** Return the data source for the given layer
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The QDomNode is a QgsProject Dom node corresponding to a map layer state.
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Essentially dumps datasource tag.
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*/
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QString dataSource( QDomNode & layerNode );
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/** Return the physical storage type associated with the given layer
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The QDomNode is a QgsProject Dom node corresponding to a map layer state.
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If the provider tag is "ogr", then it's a file type.
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However, if the layer is a raster, then there won't be a
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provider tag. It will always have an associated file.
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If the layer doesn't fall into either of the previous two categories, then
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it's either a database or URL. If the datasource tag has "url=", then it's
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URL based and if it has "dbname=">, then the layer data is in a database.
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*/
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ProviderType providerType( QDomNode & layerNode );
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/** Set the datasource element to the new value */
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void setDataSource( QDomNode & layerNode, const QString &dataSource );
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/** This is used to locate files that have moved or otherwise are missing */
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bool findMissingFile( const QString &fileFilters, QDomNode &layerNode );
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/** Find relocated data source for the given layer
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This QDom object represents a QgsProject node that maps to a specific layer.
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@param fileFilters file filters to use
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@param constLayerNode QDom node containing layer project information
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@todo
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XXX Only implemented for file based layers. It will need to be extended for
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XXX other data source types such as databases.
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*/
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bool findLayer( const QString &fileFilters, const QDomNode &constLayerNode );
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/** Find relocated data sources for given layers
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These QDom objects represent QgsProject nodes that map to specific layers.
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*/
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void findLayers( const QString &fileFilters, const QList<QDomNode> &layerNodes );
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};
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