Phaser Class: DeviceButton

## Phaser. DeviceButton

#### new DeviceButton(parent, buttonCode)

  DeviceButtons belong to both `Phaser.Pointer` and `Phaser.SinglePad` (Gamepad) instances.

  For Pointers they represent the various buttons that can exist on mice and pens, such as the left button, right button,
  middle button and advanced buttons like back and forward.

  Access them via `Pointer.leftbutton`, `Pointer.rightButton` and so on.

  On Gamepads they represent all buttons on the pad: from shoulder buttons to action buttons.

  At the time of writing this there are device limitations you should be aware of:

  - On Windows, if you install a mouse driver, and its utility software allows you to customize button actions
    (e.g., IntelliPoint and SetPoint), the middle (wheel) button, the 4th button, and the 5th button might not be set,
    even when they are pressed.
  - On Linux (GTK), the 4th button and the 5th button are not supported.
  - On Mac OS X 10.5 there is no platform API for implementing any advanced buttons.

  ##### Parameters:

  Name | Type | Description
  --- | --- | ---
  `parent` | Phaser.Pointer | Phaser.SinglePad | A reference to the parent of this button. Either a Pointer or a Gamepad.
  `buttonCode` | number | The button code this DeviceButton is responsible for.

  Source - input/DeviceButton.js, line 31

### Members

#### altKey :boolean

  True if the alt key was held down when this button was last pressed or released.
  Not supported on Gamepads.

  Source - input/DeviceButton.js, line 87

#### buttonCode :number

  The buttoncode of this button if a Gamepad, or the DOM button event value if a Pointer.

  Source - input/DeviceButton.js, line 114

#### ctrlKey :boolean

  True if the control key was held down when this button was last pressed or released.
  Not supported on Gamepads.

  Source - input/DeviceButton.js, line 103

#### <readonly> duration :number

  How long the button has been held down for in milliseconds.
  If not currently down it returns -1.

  Source - input/DeviceButton.js, line 300

#### event :object

  The DOM event that caused the change in button state.

  Source - input/DeviceButton.js, line 47

#### game :Phaser.Game

  A reference to the currently running game.

  Source - input/DeviceButton.js, line 41

#### isDown :boolean

  The "down" state of the button.

  Source - input/DeviceButton.js, line 53

#### isUp :boolean

  The "up" state of the button.

  Default Value:
    - true
  Source - input/DeviceButton.js, line 59

#### onDown :Phaser.Signal

  This Signal is dispatched every time this DeviceButton is pressed down.
  It is only dispatched once (until the button is released again).
  When dispatched it sends 2 arguments: A reference to this DeviceButton and the value of the button.

  Source - input/DeviceButton.js, line 122

#### onFloat :Phaser.Signal

  Gamepad only.
  This Signal is dispatched every time this DeviceButton changes floating value (between, but not exactly, 0 and 1).
  When dispatched it sends 2 arguments: A reference to this DeviceButton and the value of the button.

  Source - input/DeviceButton.js, line 138

#### onUp :Phaser.Signal

  This Signal is dispatched every time this DeviceButton is released from a down state.
  It is only dispatched once (until the button is pressed again).
  When dispatched it sends 2 arguments: A reference to this DeviceButton and the value of the button.

  Source - input/DeviceButton.js, line 130

#### parent :Phaser.Pointer|Phaser.SinglePad

  A reference to the Pointer or Gamepad that owns this button.

  ##### Type:

  - Phaser.Pointer | Phaser.SinglePad
  Source - input/DeviceButton.js, line 36

#### repeats :number

  Gamepad only.
  If a button is held down this holds down the number of times the button has 'repeated'.

  Source - input/DeviceButton.js, line 79

#### shiftKey :boolean

  True if the shift key was held down when this button was last pressed or released.
  Not supported on Gamepads.

  Source - input/DeviceButton.js, line 95

#### timeDown :number

  The timestamp when the button was last pressed down.

  Source - input/DeviceButton.js, line 65

#### timeUp :number

  The timestamp when the button was last released.

  Source - input/DeviceButton.js, line 71

#### value :number

  Button value. Mainly useful for checking analog buttons (like shoulder triggers) on Gamepads.

  Source - input/DeviceButton.js, line 109

### Methods

#### destroy()

  Destroys this DeviceButton, this disposes of the onDown, onUp and onFloat signals
  and clears the parent and game references.

  Source - input/DeviceButton.js, line 279

#### justPressed(duration) → {boolean}

  Returns the "just pressed" state of this button.
  Just pressed is considered true if the button was pressed down within the duration given (default 250ms).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `duration` | number | <optional> | 250 | The duration in ms below which the button is considered as being just pressed.

  ##### Returns:

  boolean -

  True if the button is just pressed otherwise false.

  Source - input/DeviceButton.js, line 228

#### justReleased(duration) → {boolean}

  Returns the "just released" state of this button.
  Just released is considered as being true if the button was released within the duration given (default 250ms).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `duration` | number | <optional> | 250 | The duration in ms below which the button is considered as being just released.

  ##### Returns:

  boolean -

  True if the button is just released otherwise false.

  Source - input/DeviceButton.js, line 244

#### <internal> padFloat(value)

  Called automatically by Phaser.SinglePad.

  ##### Parameters:

  Name | Type | Description
  --- | --- | ---
  `value` | number | Button value

  Internal:
    - This member is internal (protected) and may be modified or removed in the future.
  Source - input/DeviceButton.js, line 213

#### reset()

  Resets this DeviceButton, changing it to an isUp state and resetting the duration and repeats counters.

  Source - input/DeviceButton.js, line 260

#### <internal> start(event, value)

  Called automatically by Phaser.Pointer and Phaser.SinglePad.
  Handles the button down state.

  ##### Parameters:

  Name | Type | Argument | Description
  --- | --- | --- | ---
  `event` | object | <optional> | The DOM event that triggered the button change.
  `value` | number | <optional> | The button value. Only get for Gamepads.

  Internal:
    - This member is internal (protected) and may be modified or removed in the future.
  Source - input/DeviceButton.js, line 144

#### <internal> stop(event, value)

  Called automatically by Phaser.Pointer and Phaser.SinglePad.
  Handles the button up state.

  ##### Parameters:

  Name | Type | Argument | Description
  --- | --- | --- | ---
  `event` | object | <optional> | The DOM event that triggered the button change.
  `value` | number | <optional> | The button value. Only get for Gamepads.

  Internal:
    - This member is internal (protected) and may be modified or removed in the future.
  Source - input/DeviceButton.js, line 179