Introduces QAbstractItemModel to QDeclarative when setting up
the plasma core components.
This way we don't have to cast to the type ourselves and produce proper
QML errors if the type is not correct. This happened with Plasma::SortProxyModel.
REVIEW: 106267
* possible to connect multiple sources
* use a normal QMap instead of the quirky qdeclarativepropertymap
* DataModel can be connected to multiple sources as well
* possible to use them with dataengines such as activities and tasks where the first level keys are the "roles" themselves
(all examples in playground have to be adapted)
svn path=/trunk/KDE/kdebase/runtime/; revision=1194216
some have many keys one for each item.
bind a new DataModel into QML that will be associated to a specific DataSource and a key pattern
an exact one like "items" of rss
or a partial regexp one like "KnowledgeBase-[\d]*" like the ocs engine
in this way is not necessary to change how those dataengine works and is possible to use them in QML without headaches
svn path=/trunk/KDE/kdebase/runtime/; revision=1189953
make it available as a QAbstractModel, so will be possible to categorize it
(considering to put it behind a qsortfilterproxymodel to make it easy to do filtering)
svn path=/trunk/KDE/kdebase/runtime/; revision=1189920
