Package com.thecoderscorner.menu.domain

Class AnalogMenuItem

java.lang.Object

com.thecoderscorner.menu.domain.MenuItem<Integer>

com.thecoderscorner.menu.domain.AnalogMenuItem

public class AnalogMenuItem
extends MenuItem<Integer>

Represents an analog (numeric) menu item, it is always a zero based integer when retrieved from storage, but it can have an offset and divisor, so therefore is able to represent decimal values. The offset can also be negative. Rather than directly constructing an item of this type, you can use the AnalogMenuItemBuilder.

Field Summary

Fields inherited from class com.thecoderscorner.menu.domain.MenuItem

eepromAddress, functionName, id, name

Constructor Summary

Constructors

Constructor	Description
AnalogMenuItem()
AnalogMenuItem(String name, int id, int eepromAddress, String functionName, int maxValue, int offset, int divisor, String unitName)

Method Summary

Modifier and Type	Method	Description
void	accept(MenuItemVisitor visitor)	See the MenuItemVistor for more info.
boolean	equals(Object o)
int	getDivisor()	The divisor used when displaying the item, for example value 50 with a divisor of 10 is 5.0
int	getMaxValue()	The maximum value (0 based integer) that this item can represent
int	getOffset()	The offset from 0 that is used when displaying the item, can be negative
String	getUnitName()	The unit name to appear directly after the value, for example a temprature item may be "oC" where as a volume control could be "dB"
int	hashCode()
MenuState<Integer>	newMenuState(Integer value, boolean changed, boolean active)	returns a new state object that represents the current value for the menu.

Methods inherited from class com.thecoderscorner.menu.domain.MenuItem

getEepromAddress, getFunctionName, getId, getName, hasChildren, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AnalogMenuItem

public AnalogMenuItem()

AnalogMenuItem

public AnalogMenuItem(String name,
                      int id,
                      int eepromAddress,
                      String functionName,
                      int maxValue,
                      int offset,
                      int divisor,
                      String unitName)

Method Detail

getMaxValue

public int getMaxValue()

The maximum value (0 based integer) that this item can represent

Returns:

max value

getOffset

public int getOffset()

The offset from 0 that is used when displaying the item, can be negative

Returns:

the offset

getDivisor

public int getDivisor()

The divisor used when displaying the item, for example value 50 with a divisor of 10 is 5.0

Returns:

the divisor used

getUnitName

public String getUnitName()

The unit name to appear directly after the value, for example a temprature item may be "oC" where as a volume control could be "dB"

Returns:

the name of the unit (if any)

newMenuState

public MenuState<Integer> newMenuState(Integer value,
                                       boolean changed,
                                       boolean active)

returns a new state object that represents the current value for the menu. Current values are held separately to the items, see MenuTree

Specified by:

newMenuState in class MenuItem<Integer>

Parameters:

value - the new value

changed - if the value has changed

active - if the menu item is active, can be used for your own purposes.

Returns:

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

accept

public void accept(MenuItemVisitor visitor)

See the MenuItemVistor for more info.

Specified by:

accept in class MenuItem<Integer>

Parameters:

visitor - the item to be visited.