Package com.vaadin.client.connectors

Class GridConnector

java.lang.Object

com.vaadin.client.ui.AbstractConnector

com.vaadin.client.ui.AbstractComponentConnector

com.vaadin.client.ui.AbstractHasComponentsConnector

com.vaadin.client.connectors.GridConnector

All Implemented Interfaces:

com.google.gwt.event.shared.EventHandler, StateChangeEvent.StateChangeHandler, ComponentConnector, ConnectorHierarchyChangeEvent.ConnectorHierarchyChangeHandler, DeferredWorker, HasComponentsConnector, ServerConnector, ManagedLayout, SimpleManagedLayout, Connector, Serializable

public class GridConnector
extends AbstractHasComponentsConnector
implements SimpleManagedLayout, DeferredWorker

Connects the client side Grid widget with the server side Grid component.

The Grid is typed to JSONObject. The structure of the JSONObject is described at DataProviderRpc.setRowData(int, List).

Since:

7.4

Author:

Vaadin Ltd

See Also:

Serialized Form

Field Summary

Fields inherited from class com.vaadin.client.ui.AbstractComponentConnector

SIGNIFICANT_MOVE_THRESHOLD

Constructor Summary

Constructors

Constructor	Description
GridConnector()

Method Summary

Modifier and Type	Method	Description
String	getColumnId(Grid.Column<?,?> column)
com.vaadin.client.connectors.RpcDataSourceConnector.DetailsListener	getDetailsListener()	Gets the listener used by this connector for tracking when row detail visibility changes.
String	getRowKey(elemental.json.JsonObject row)	Gets the row key for a row object.
GridState	getState()	Returns the shared state object for this connector.
TooltipInfo	getTooltipInfo(com.google.gwt.dom.client.Element element)	Gets the tooltip info for the given element.
Grid<elemental.json.JsonObject>	getWidget()	Returns the widget associated with this paintable.
boolean	hasTooltip()	Check whether there might be a tooltip for this component.
protected void	init()	Called when the connector has been initialized.
boolean	isWorkPending()	Checks whether there are operations pending for this widget or connector that must be executed before reaching a steady state.
void	layout()
void	onConnectorHierarchyChange(ConnectorHierarchyChangeEvent connectorHierarchyChangeEvent)	Called by the framework when the list of child components of the connector implementing this interface has changed.
void	onStateChanged(StateChangeEvent stateChangeEvent)	Notifies the event handler that the state has changed.
protected void	sendContextClickEvent(MouseEventDetails details, com.google.gwt.dom.client.EventTarget eventTarget)	This method sends the context menu event to the server-side.
void	setDataSource(RpcDataSourceConnector.RpcDataSource dataSource)
void	updateCaption(ComponentConnector connector)	Update child components caption, description and error message.

Methods inherited from class com.vaadin.client.ui.AbstractHasComponentsConnector

addConnectorHierarchyChangeHandler, getChildComponents, setChildComponents

Methods inherited from class com.vaadin.client.ui.AbstractComponentConnector

createWidget, delegateCaptionHandling, flush, getIcon, getIconUri, getLayoutManager, isReadOnly, isRealUpdate, isRelativeHeight, isRelativeWidth, isUndefinedHeight, isUndefinedWidth, onUnregister, registerTouchHandlers, setWidgetEnabled, setWidgetStyleName, setWidgetStyleNameWithPrefix, shouldHandleLongTap, unregisterTouchHandlers, updateComponentSize, updateComponentSize, updateEnabledState, updateWidgetSize, updateWidgetStyleNames

Methods inherited from class com.vaadin.client.ui.AbstractConnector

addStateChangeHandler, addStateChangeHandler, createState, doInit, ensureHandlerManager, fireEvent, forceStateChange, getChildren, getConnection, getConnectorId, getParent, getResourceUrl, getRpcImplementations, getRpcProxy, getStateType, hasEventListener, isEnabled, registerRpc, removeStateChangeHandler, removeStateChangeHandler, setChildren, setParent, unregisterRpc

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.vaadin.client.ComponentConnector

delegateCaptionHandling, flush, getLayoutManager, isReadOnly, isRelativeHeight, isRelativeWidth, isUndefinedHeight, isUndefinedWidth, setWidgetEnabled

Methods inherited from interface com.vaadin.shared.Connector

getConnectorId

Methods inherited from interface com.vaadin.client.ServerConnector

addStateChangeHandler, addStateChangeHandler, doInit, fireEvent, getChildren, getConnection, getParent, getRpcImplementations, hasEventListener, isEnabled, onUnregister, removeStateChangeHandler, removeStateChangeHandler, setChildren, setParent, updateEnabledState

Constructor Detail

GridConnector

public GridConnector()

Method Detail

getWidget

public Grid<elemental.json.JsonObject> getWidget()

Description copied from class: AbstractComponentConnector

Returns the widget associated with this paintable. The widget returned by this method must not changed during the life time of the paintable.

Specified by:

getWidget in interface ComponentConnector

Overrides:

getWidget in class AbstractComponentConnector

Returns:

The widget associated with this paintable

getState

public GridState getState()

Description copied from class: AbstractConnector

Returns the shared state object for this connector. Override this method to define the shared state type for your connector.

Specified by:

getState in interface ComponentConnector

Specified by:

getState in interface ServerConnector

Overrides:

getState in class AbstractComponentConnector

Returns:

the current shared state (never null)

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

onStateChanged

public void onStateChanged(StateChangeEvent stateChangeEvent)

Description copied from interface: StateChangeEvent.StateChangeHandler

Notifies the event handler that the state has changed.

Specified by:

onStateChanged in interface StateChangeEvent.StateChangeHandler

Overrides:

onStateChanged in class AbstractComponentConnector

Parameters:

stateChangeEvent - the state change event with details about the change

setDataSource

public void setDataSource(RpcDataSourceConnector.RpcDataSource dataSource)

getRowKey

public String getRowKey(elemental.json.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

getColumnId

public String getColumnId(Grid.Column<?,?> column)

layout

public void layout()

Specified by:

layout in interface SimpleManagedLayout

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

getDetailsListener

public com.vaadin.client.connectors.RpcDataSourceConnector.DetailsListener getDetailsListener()

Gets the listener used by this connector for tracking when row detail visibility changes.

Returns:

the used details listener

Since:

7.5.0

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

getTooltipInfo

public TooltipInfo getTooltipInfo(com.google.gwt.dom.client.Element element)

Description copied from interface: ComponentConnector

Gets the tooltip info for the given element.

When overriding this method, ComponentConnector.hasTooltip() should also be overridden to return true in all situations where this method might return a non-empty result.

Specified by:

getTooltipInfo in interface ComponentConnector

Overrides:

getTooltipInfo in class AbstractComponentConnector

Parameters:

element - The element to lookup a tooltip for

Returns:

The tooltip for the element or null if no tooltip is defined for this element.

sendContextClickEvent

protected void sendContextClickEvent(MouseEventDetails details,
                                     com.google.gwt.dom.client.EventTarget eventTarget)

Description copied from class: AbstractComponentConnector

This method sends the context menu event to the server-side. Can be overridden to provide extra information through an alternative RPC interface.

Overrides:

sendContextClickEvent in class AbstractComponentConnector