com.telerik.widget.chart.visualization.behaviors

Class ChartBehavior

java.lang.Object

com.telerik.android.common.PropertyManager

com.telerik.widget.chart.visualization.behaviors.ChartBehavior

Direct Known Subclasses:

ChartPanAndZoomBehavior, ChartPopupBehavior, ChartSelectionBehavior

public abstract class ChartBehavior
extends PropertyManager

Base class for all chart behaviors.

Constructor Summary

Constructors

Constructor and Description
ChartBehavior()

Method Summary

Modifier and Type	Method and Description
void	attach(RadChartViewBase chart) Used to attach the behaviour to e specified chart instance.
RadChartViewBase	chart() Gets the chart to which this behavior is attached.
void	detach() Used to detach the current chart instance.
boolean	onDoubleTap(MotionEvent e) Invoked when a double tap gesture occurs on the owner chart.
boolean	onDown(MotionEvent e) Invoked when the user touches the chart.
boolean	onDrag(MotionEvent initialEvent, MotionEvent currentEvent, RadSize distance, boolean isInHold) Invoked when a drag gesture occurs on the owner chart.
boolean	onHold(MotionEvent e) Invoked when a hold gesture occurs on the owner chart.
boolean	onPinch(ChartScaleGestureDetector detector, MotionEvent pinchEvent) Invoked when a pinch gesture occurs on the owner chart.
void	onPinchComplete() Called when the pinch gesture finishes.
boolean	onTap(MotionEvent e) Invoked when a tap gesture occurs on the owner chart.
boolean	onUp(MotionEvent e) Invoked when the user lifts a finger from the chart.
void	reset() Resets the behavior.

Methods inherited from class com.telerik.android.common.PropertyManager

getValue, resetPropertyValue, setValue, setValue

Methods inherited from class java.lang.Object

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

Constructor Detail

ChartBehavior

public ChartBehavior()

Method Detail

chart

public RadChartViewBase chart()

Gets the chart to which this behavior is attached.

onHold

public boolean onHold(MotionEvent e)

Invoked when a hold gesture occurs on the owner chart.

Parameters:

e - An object that contains gesture information.

Returns:

Returns true if the gesture is handled.

onDown

public boolean onDown(MotionEvent e)

Invoked when the user touches the chart.

Parameters:

e - An object that contains gesture information.

Returns:

Returns true if the gesture is handled.

onUp

public boolean onUp(MotionEvent e)

Invoked when the user lifts a finger from the chart.

Parameters:

e - An object that contains gesture information.

Returns:

Returns true if the gesture is handled.

onTap

public boolean onTap(MotionEvent e)

Invoked when a tap gesture occurs on the owner chart.

Parameters:

e - An object that contains gesture information.

Returns:

Returns true if the gesture is handled.

onDrag

public boolean onDrag(MotionEvent initialEvent,
                      MotionEvent currentEvent,
                      RadSize distance,
                      boolean isInHold)

Invoked when a drag gesture occurs on the owner chart.

Parameters:

initialEvent - Information for the event that started the gesture.

currentEvent - Information for the event that caused the current drag gesture

distance - The distance travelled since the previous gesture. This is NOT the distance between initialEvent and currentEvent.

Returns:

Returns true if the gesture is handled.

onDoubleTap

public boolean onDoubleTap(MotionEvent e)

Invoked when a double tap gesture occurs on the owner chart.

Parameters:

e - An object that contains gesture information.

Returns:

Returns true if the gesture is handled.

onPinch

public boolean onPinch(ChartScaleGestureDetector detector,
                       MotionEvent pinchEvent)

Invoked when a pinch gesture occurs on the owner chart.

Parameters:

detector - The scale detector that detected this gesture.

pinchEvent - The MotionEvent that represents this pinch gesture.

Returns:

Returns true if the gesture is handled.

onPinchComplete

public void onPinchComplete()

Called when the pinch gesture finishes.

attach

public void attach(RadChartViewBase chart)

Used to attach the behaviour to e specified chart instance.

Parameters:

chart - the chart to be attached.

detach

public void detach()

Used to detach the current chart instance.

reset

public void reset()

Resets the behavior. This occurs when the chart has major changes like new series or different axes.