org.pepstock.charba.client.impl.callbacks

Class DataLabelsPointerHandler

java.lang.Object

org.pepstock.charba.client.datalabels.events.AbstractEventHandler

org.pepstock.charba.client.impl.callbacks.DataLabelsPointerHandler

All Implemented Interfaces:

ClickEventHandler, EnterEventHandler, LeaveEventHandler

Direct Known Subclasses:

DataLabelsSelectionHandler

public class DataLabelsPointerHandler
extends AbstractEventHandler

DataLabelsPlugin.ID event callback to change the cursor type when the labels are clickable.

Author:

Andrea "Stock" Stocchero

Field Summary

Fields

Modifier and Type	Field and Description
static Style.Cursor	DEFAULT_CURSOR Default pointer cursor to use if omitted, Style.Cursor.POINTER.

Constructor Summary

Constructors

Constructor and Description
DataLabelsPointerHandler() Creates a callback setting the DEFAULT_CURSOR as pointer.
DataLabelsPointerHandler(Style.Cursor cursor) Creates a callback setting the pointer cursor what is passed as argument.

Method Summary

Modifier and Type	Method and Description
Style.Cursor	getCursor() Returns the pointer cursor to use.
boolean	onEnter(IsChart chart, ScriptableContext context) Invoked to manage ENTER events on labels.
boolean	onLeave(IsChart chart, ScriptableContext context) Invoked to manage LEAVE events on labels.

Methods inherited from class org.pepstock.charba.client.datalabels.events.AbstractEventHandler

onClick

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_CURSOR

public static final Style.Cursor DEFAULT_CURSOR

Default pointer cursor to use if omitted, Style.Cursor.POINTER.

Constructor Detail

DataLabelsPointerHandler

public DataLabelsPointerHandler()

Creates a callback setting the DEFAULT_CURSOR as pointer.

DataLabelsPointerHandler

public DataLabelsPointerHandler(Style.Cursor cursor)

Creates a callback setting the pointer cursor what is passed as argument.

Parameters:

cursor - the cursor type to use. If null, uses DEFAULT_CURSOR as pointer

Method Detail

getCursor

public final Style.Cursor getCursor()

Returns the pointer cursor to use.

Returns:

the pointer cursor to use

onLeave

public boolean onLeave(IsChart chart,
                       ScriptableContext context)

Description copied from interface: LeaveEventHandler

Invoked to manage LEAVE events on labels.

Specified by:

onLeave in interface LeaveEventHandler

Overrides:

onLeave in class AbstractEventHandler

Parameters:

chart - chart instance

context - DataLabelsPlugin.ID plugin context instance

Returns:

If the callback explicitly returns true, the label is updated with the new context and the chart re-rendered.

onEnter

public boolean onEnter(IsChart chart,
                       ScriptableContext context)

Description copied from interface: EnterEventHandler

Invoked to manage ENTER events on labels.

Specified by:

onEnter in interface EnterEventHandler

Overrides:

onEnter in class AbstractEventHandler

Parameters:

chart - chart instance

context - DataLabelsPlugin.ID plugin context instance

Returns:

If the callback explicitly returns true, the label is updated with the new context and the chart re-rendered.