Add setContextProperties()

Setting all properties in one batch avoids unnecessary
refreshing of expressions and is therefore a lot
faster if there are many expressions in the context.

In an example I created it takes 500ms to set 10 context properties
using setContextProperty() and it takes about 150ms to set the
context properties using setContextProperties.

Change-Id: Ic7cf03cda292b316198f37f963b61a2388a288c9
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

0 files changed, 0 insertions, 0 deletions