com.blackledge.david.tivo.widgets.qk.handlers
Class QuadrantsKeyboardHandler

java.lang.Object
  com.blackledge.david.tivo.widgets.qk.handlers.QuadrantsKeyboardHandler

All Implemented Interfaces:

QuickKeyboardHandler

public class QuadrantsKeyboardHandler
extends Object
implements QuickKeyboardHandler

Constructor Summary

QuadrantsKeyboardHandler()

Method Summary

void	abortCharacter() Reset handler state - the user pressed an aborting key like delete/backspace and the last uncommitted value passed to QuickKeyboard.setCharacter(String) is deleted (no need to do it yourself.
boolean	buttonPress(int keyCode) Alters the state of the keyboard handler and may cause a character to be set and possibly the cursor to be advanced.
void	finishCharacter() Set a character if you can settle on one in current state, then reset state - the user pressed an escaping action key like left/right/space - if you cannot settle on a character in the current state (i.e.
String[]	getCharacterLayout() Array of strings as character rows {"abcd","efgh"...} - use spaces to create gaps
List	getCues() List of all currently active cues to display to the user indicating what a particular keyCode will activate on the screen given the current state of the keyboard handler.
Map	getExtraKeyLabels() To provide a map of any other keys you want displayed to the user with a short label next to them.
void	init(QuickKeyboard keyboard) initialization - handler needs to hold on to this reference to call QuickKeyboard.setCharacter(String), etc., as appropriate.

Methods inherited from class java.lang.Object

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

Constructor Detail

QuadrantsKeyboardHandler

public QuadrantsKeyboardHandler()

Method Detail

abortCharacter

public void abortCharacter()

Description copied from interface: QuickKeyboardHandler

Reset handler state - the user pressed an aborting key like delete/backspace and the last uncommitted value passed to QuickKeyboard.setCharacter(String) is deleted (no need to do it yourself. layout/cues will be requested next.

Specified by:

abortCharacter in interface QuickKeyboardHandler

buttonPress

public boolean buttonPress(int keyCode)

Description copied from interface: QuickKeyboardHandler

Alters the state of the keyboard handler and may cause a character to be set and possibly the cursor to be advanced. Typically, each button press changes the state until a character is decided on, at which time the handler calls QuickKeyboard.setCharacter(String) and usually QuickKeyboard.nextCharacter(). This is also where the handler should support additional character sets on particular button presses e.g. Thumbs Up/Down for upper/lowercase set. Use QuickKeyboardHandler.getExtraKeyLabels() to provide a list of cues for these mode changing keys. Layout/cues will be requested next.

Specified by:

buttonPress in interface QuickKeyboardHandler

Parameters:

keyCode - the key pressed by the user

Returns:

true if the key was handled by the keyboard handler (i.e. the button caused s change in the handler's state), false if not (usually would result in a "bonk")

finishCharacter

public void finishCharacter()

Description copied from interface: QuickKeyboardHandler

Set a character if you can settle on one in current state, then reset state - the user pressed an escaping action key like left/right/space - if you cannot settle on a character in the current state (i.e. if you were just displaying something that really wasn't chosen by the user), be sure to call QuickKeyboard.setCharacter(String) with a null value here to abort it. layout/cues will be requested next.

Specified by:

finishCharacter in interface QuickKeyboardHandler

getCharacterLayout

public String[] getCharacterLayout()

Description copied from interface: QuickKeyboardHandler

Array of strings as character rows {"abcd","efgh"...} - use spaces to create gaps

Specified by:

getCharacterLayout in interface QuickKeyboardHandler

Returns:

all rows to be layed out.

getCues

public List getCues()

Description copied from interface: QuickKeyboardHandler

List of all currently active cues to display to the user indicating what a particular keyCode will activate on the screen given the current state of the keyboard handler. Called after getCharacterLayout. Instances will be associated with the created views, so if you re-use your instances, the views will be re-used and may be animated to their new position/size. Instances not re-used will be dereferenced and the views removed.

Specified by:

getCues in interface QuickKeyboardHandler

Returns:

List of QKCue objects

getExtraKeyLabels

public Map getExtraKeyLabels()

Description copied from interface: QuickKeyboardHandler

To provide a map of any other keys you want displayed to the user with a short label next to them. The map should have (key, value) pairs where the key is an Integer object and the value is a String like (new Integer(keyCode),"The Short Label"). This is useful for any non-cue keys the handler supports that the user needs to know about e.g. support for Thumbs Up to change to an Uppercase character set layout. The keyboard will attempt to display this next to the main layout with each pair on a row of its own, so long lists may not display well. Basic implementation should just get QuickKeyboard.getDefaultExtraKeys() and optionally add to that LinkedHashMap before returning it.

Specified by:

getExtraKeyLabels in interface QuickKeyboardHandler

init

public void init(QuickKeyboard keyboard)

Description copied from interface: QuickKeyboardHandler

initialization - handler needs to hold on to this reference to call QuickKeyboard.setCharacter(String), etc., as appropriate.

Specified by:

init in interface QuickKeyboardHandler