Package com.vaadin.client.connectors

Class GridConnector

    • Constructor Detail

      • GridConnector

        public GridConnector()

    • Method Detail

      • init

        protected void init()
        Description copied from class: AbstractConnector
        Called when the connector has been initialized. Override this method to perform initialization of the connector.
        Overrides:
        init in class AbstractConnector

      • getRowKey

        public String getRowKey​(JsonObject row)
        Gets the row key for a row object.
        Parameters:
        row - the row object
        Returns:
        the key for the given row

      • updateCaption

        public void updateCaption​(ComponentConnector connector)
        Description copied from interface: HasComponentsConnector
        Update child components caption, description and error message.

        Each component is responsible for maintaining its caption, description and error message. In most cases components doesn't want to do that and those elements reside outside of the component. Because of this layouts must provide service for it's childen to show those elements for them.

        Specified by:
        updateCaption in interface HasComponentsConnector
        Parameters:
        connector - Child component for which service is requested.

      • onConnectorHierarchyChange

        public void onConnectorHierarchyChange​(ConnectorHierarchyChangeEvent connectorHierarchyChangeEvent)
        Description copied from interface: ConnectorHierarchyChangeEvent.ConnectorHierarchyChangeHandler
        Called by the framework when the list of child components of the connector implementing this interface has changed. The implementation is responsible for attaching the widgets of any new children and detaching the widgets of any removed children. Implementations should typically also make sure that the child widgets are attached according to the ordering of the child components.

        This method is called after the shared state and hierarchy data (i.e. AbstractHasComponentsConnector.setChildComponents(List)) been updated for all affected connectors, but before updating captions, firing state change events, invoking updateFromUIDL for legacy connectors, invoking RPC and starting the layout phase.

        Please note that hierarchy change events are fired in a non-deterministic order when a message from the server causes multiple parts of the hierarchy to change. This means that the old parent connector might not yet have detached a child widget and that the widget of a removed child might already have been attached by its new parent.

        Specified by:
        onConnectorHierarchyChange in interface ConnectorHierarchyChangeEvent.ConnectorHierarchyChangeHandler
        Parameters:
        connectorHierarchyChangeEvent - the event with information about the hierarchy change

      • isWorkPending

        public boolean isWorkPending()
        Description copied from interface: DeferredWorker
        Checks whether there are operations pending for this widget or connector that must be executed before reaching a steady state.
        Specified by:
        isWorkPending in interface DeferredWorker

      • hasTooltip

        public boolean hasTooltip()
        Description copied from interface: ComponentConnector
        Check whether there might be a tooltip for this component. The framework will only add event listeners for automatically handling tooltips (using ComponentConnector.getTooltipInfo(Element)) if this method returns true.

        This is only done to optimize performance, so in cases where the status is not known, it's safer to return true so that there will be a tooltip handler even though it might not be needed in all cases.

        Specified by:
        hasTooltip in interface ComponentConnector
        Overrides:
        hasTooltip in class AbstractComponentConnector
        Returns:
        true if some part of the component might have a tooltip, otherwise false