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Removed hard coding of provider types in the addVectorLayer method. Caller must now provide compatible arguments that the designated provider can use to open the data store and fetch data.

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git-svn-id: http://svn.osgeo.org/qgis/trunk@956 c8812cc2-4d05-0410-92ff-de0c093fc19c
This commit is contained in:
gsherman 2004-02-27 17:43:55 +00:00
parent 41cd5c408d
commit 8082727dd1
1 changed files with 46 additions and 40 deletions
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86
src/qgisapp.cpp
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@ -2328,54 +2328,60 @@ QString QgisApp::activeLayerSource()
return source;
}
/** Add a vector layer directly without prompting user for location */
/** Add a vector layer directly without prompting user for location
The caller must provide information compatible with the provider plugin
using the vectorLayerPath and baseName. The provider can use these
parameters in any way necessary to initialize the layer. The baseName
parameter is used in the Map Legend so it should be formed in a meaningful
way.
*/
void QgisApp::addVectorLayer(QString vectorLayerPath, QString baseName, QString providerKey)
{
// check to see if the appropriate provider is available
QString providerName;
// check to see if the appropriate provider is available
QString providerName;
QString pProvider = providerRegistry->library(providerKey);
if (pProvider.length() > 0)
{
mapCanvas->freeze();
QApplication::setOverrideCursor(Qt::WaitCursor);
// create the layer
QgsVectorLayer *lyr;
if (providerKey == "postgres")
{
lyr = new QgsVectorLayer(vectorLayerPath + " table=" + baseName, baseName, "postgres");
} else
{
if (providerKey == "ogr")
{
lyr = new QgsVectorLayer(vectorLayerPath, baseName, "ogr");
}
}
QString pProvider = providerRegistry->library(providerKey);
if (pProvider.length() > 0)
{
mapCanvas->freeze();
QApplication::setOverrideCursor(Qt::WaitCursor);
// create the layer
QgsVectorLayer *lyr;
/* Eliminate the need to instantiate the layer based on provider type.
The caller is responsible for cobbling together the needed information to
open the layer
*/
#ifdef QGISDEBUG
std::cout << "Creating new vector layer using " <<
vectorLayerPath << " with baseName of " << baseName <<
" and providerKey of " << providerKey << std::endl;
#endif
lyr = new QgsVectorLayer(vectorLayerPath, baseName, providerKey);
// init the context menu so it can connect to slots in main app
lyr->initContextMenu(this);
// init the context menu so it can connect to slots in main app
lyr->initContextMenu(this);
// give it a random color
QgsSingleSymRenderer *renderer = new QgsSingleSymRenderer(); //add single symbol renderer as default
lyr->setRenderer(renderer);
renderer->initializeSymbology(lyr);
// add it to the mapcanvas collection
mapCanvas->addLayer(lyr);
projectIsDirty = true;
//qWarning("incrementing iterator");
/*! \todo Need legend scrollview and legenditem classes */
mapLegend->update();
// give it a random color
QgsSingleSymRenderer *renderer = new QgsSingleSymRenderer(); //add single symbol renderer as default
lyr->setRenderer(renderer);
renderer->initializeSymbology(lyr);
// add it to the mapcanvas collection
mapCanvas->addLayer(lyr);
projectIsDirty = true;
//qWarning("incrementing iterator");
/*! \todo Need legend scrollview and legenditem classes */
mapLegend->update();
// draw the map
//mapCanvas->render2();
statusBar()->message(mapCanvas->extent().stringRep());
// draw the map
//mapCanvas->render2();
statusBar()->message(mapCanvas->extent().stringRep());
}
qApp->processEvents();
}
qApp->processEvents();
mapCanvas->freeze(false);
mapCanvas->render2();
QApplication::restoreOverrideCursor();
mapCanvas->freeze(false);
mapCanvas->render2();
QApplication::restoreOverrideCursor();
}
int QgisApp::saveDirty()