Package com.vaadin.client

Class InitialPropertiesHandler

java.lang.Object
com.vaadin.client.InitialPropertiesHandler
public class InitialPropertiesHandler extends Object
Handles server initial property values with the purpose to prevent change their values from the client side.

Initial property values have to be set from the server side. Client side may have default values which override server side values and those values are sent to the server (overriding server side values). This class prevents this. Only properties that have not been set form the server are sent from the client to the server. Properties that have been set from the server overrides any client side default value.

Since:
1.0
Author:
Vaadin Ltd
See Also:

  • Constructor Details

    • InitialPropertiesHandler

      public InitialPropertiesHandler(Registry registry)
      Creates a new instance connected to the given registry.
      Parameters:
      registry - the global registry

  • Method Details

    • flushPropertyUpdates

      public void flushPropertyUpdates()
      Flushes collected property update queue (requested to be sent from the client to the server).

      Supposed to be called in the end of TreeChangeProcessor changes processing.

    • nodeRegistered

      public void nodeRegistered(StateNode node)
      Notifies the handler about registered node.

      The method is called for the newly created node which is registered in the StateTree.

      Parameters:
      node - the registered node

    • handlePropertyUpdate

      public boolean handlePropertyUpdate(MapProperty property)
      Handles property update request before it's sent to the server via RPC.

      The method returns true for the property which shouldn't be sent to the server because it's going to be handled by the handler (queued and sent later on if allowed).

      Parameters:
      property - property to handle
      Returns:
      true if property is handled by the handler, false otherwise