IT. Expert System.

All Implemented Interfaces:

MovementMethod

Direct Known Subclasses:

ArrowKeyMovementMethod, ScrollingMovementMethod

public class BaseMovementMethod
extends Object
implements MovementMethod

• Constructor Summary

  Constructors

  Constructor and Description
  BaseMovementMethod()

• Method Summary

  Methods

  Modifier and Type	Method and Description
  protected boolean	bottom(TextView widget, Spannable buffer) Performs a bottom movement action.
  boolean	canSelectArbitrarily() Returns true if this movement method allows arbitrary selection of any text; false if it has no selection (like a movement method that only scrolls) or a constrained selection (for example limited to links.
  protected boolean	down(TextView widget, Spannable buffer) Performs a down movement action.
  protected boolean	end(TextView widget, Spannable buffer) Performs an end movement action.
  protected int	getMovementMetaState(Spannable buffer, KeyEvent event) Gets the meta state used for movement using the modifiers tracked by the text buffer as well as those present in the key event.
  protected boolean	handleMovementKey(TextView widget, Spannable buffer, int keyCode, int movementMetaState, KeyEvent event) Performs a movement key action.
  protected boolean	home(TextView widget, Spannable buffer) Performs a home movement action.
  void	initialize(TextView widget, Spannable text)
  protected boolean	left(TextView widget, Spannable buffer) Performs a left movement action.
  protected boolean	leftWord(TextView widget, Spannable buffer)
  protected boolean	lineEnd(TextView widget, Spannable buffer) Performs a line-end movement action.
  protected boolean	lineStart(TextView widget, Spannable buffer) Performs a line-start movement action.
  boolean	onGenericMotionEvent(TextView widget, Spannable text, MotionEvent event)
  boolean	onKeyDown(TextView widget, Spannable text, int keyCode, KeyEvent event)
  boolean	onKeyOther(TextView widget, Spannable text, KeyEvent event) If the key listener wants to other kinds of key events, return true, otherwise return false and the caller (i.e.
  boolean	onKeyUp(TextView widget, Spannable text, int keyCode, KeyEvent event)
  void	onTakeFocus(TextView widget, Spannable text, int direction)
  boolean	onTouchEvent(TextView widget, Spannable text, MotionEvent event)
  boolean	onTrackballEvent(TextView widget, Spannable text, MotionEvent event)
  protected boolean	pageDown(TextView widget, Spannable buffer) Performs a page-down movement action.
  protected boolean	pageUp(TextView widget, Spannable buffer) Performs a page-up movement action.
  protected boolean	right(TextView widget, Spannable buffer) Performs a right movement action.
  protected boolean	rightWord(TextView widget, Spannable buffer)
  protected boolean	scrollBottom(TextView widget, Spannable buffer) Performs a scroll to bottom action.
  protected boolean	scrollDown(TextView widget, Spannable buffer, int amount) Performs a scroll down action.
  protected boolean	scrollLeft(TextView widget, Spannable buffer, int amount) Performs a scroll left action.
  protected boolean	scrollLineEnd(TextView widget, Spannable buffer) Performs a scroll to line end action.
  protected boolean	scrollLineStart(TextView widget, Spannable buffer) Performs a scroll to line start action.
  protected boolean	scrollPageDown(TextView widget, Spannable buffer) Performs a scroll page up action.
  protected boolean	scrollPageUp(TextView widget, Spannable buffer) Performs a scroll page up action.
  protected boolean	scrollRight(TextView widget, Spannable buffer, int amount) Performs a scroll right action.
  protected boolean	scrollTop(TextView widget, Spannable buffer) Performs a scroll to top action.
  protected boolean	scrollUp(TextView widget, Spannable buffer, int amount) Performs a scroll up action.
  protected boolean	top(TextView widget, Spannable buffer) Performs a top movement action.
  protected boolean	up(TextView widget, Spannable buffer) Performs an up movement action.

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • BaseMovementMethod

    public BaseMovementMethod()

• Method Detail

  • canSelectArbitrarily

    public boolean canSelectArbitrarily()

    Description copied from interface: MovementMethod
    Returns true if this movement method allows arbitrary selection of any text; false if it has no selection (like a movement method that only scrolls) or a constrained selection (for example limited to links. The "Select All" menu item is disabled if arbitrary selection is not allowed.

    Specified by:

    canSelectArbitrarily in interface MovementMethod

  • initialize

    public void initialize(TextView widget,
                  Spannable text)

    Specified by:

    initialize in interface MovementMethod

  • onKeyDown

    public boolean onKeyDown(TextView widget,
                    Spannable text,
                    int keyCode,
                    KeyEvent event)

    Specified by:

    onKeyDown in interface MovementMethod

  • onKeyOther

    public boolean onKeyOther(TextView widget,
                     Spannable text,
                     KeyEvent event)

    Description copied from interface: MovementMethod
    If the key listener wants to other kinds of key events, return true, otherwise return false and the caller (i.e. the widget host) will handle the key.

    Specified by:

    onKeyOther in interface MovementMethod

  • onKeyUp

    public boolean onKeyUp(TextView widget,
                  Spannable text,
                  int keyCode,
                  KeyEvent event)

    Specified by:

    onKeyUp in interface MovementMethod

  • onTakeFocus

    public void onTakeFocus(TextView widget,
                   Spannable text,
                   int direction)

    Specified by:

    onTakeFocus in interface MovementMethod

  • onTouchEvent

    public boolean onTouchEvent(TextView widget,
                       Spannable text,
                       MotionEvent event)

    Specified by:

    onTouchEvent in interface MovementMethod

  • onTrackballEvent

    public boolean onTrackballEvent(TextView widget,
                           Spannable text,
                           MotionEvent event)

    Specified by:

    onTrackballEvent in interface MovementMethod

  • onGenericMotionEvent

    public boolean onGenericMotionEvent(TextView widget,
                               Spannable text,
                               MotionEvent event)

    Specified by:

    onGenericMotionEvent in interface MovementMethod

  • getMovementMetaState

    protected int getMovementMetaState(Spannable buffer,
                           KeyEvent event)

    Gets the meta state used for movement using the modifiers tracked by the text buffer as well as those present in the key event. The movement meta state excludes the state of locked modifiers or the SHIFT key since they are not used by movement actions (but they may be used for selection).

    Parameters:

    buffer - The text buffer.

    event - The key event.

    Returns:

    The keyboard meta states used for movement.

  • handleMovementKey

    protected boolean handleMovementKey(TextView widget,
                            Spannable buffer,
                            int keyCode,
                            int movementMetaState,
                            KeyEvent event)

    Performs a movement key action. The default implementation decodes the key down and invokes movement actions such as down(android.widget.TextView, android.text.Spannable) and up(android.widget.TextView, android.text.Spannable). onKeyDown(TextView, Spannable, int, KeyEvent) calls this method once to handle an KeyEvent.ACTION_DOWN. onKeyOther(TextView, Spannable, KeyEvent) calls this method repeatedly to handle each repetition of an KeyEvent.ACTION_MULTIPLE.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    event - The key event.

    keyCode - The key code.

    movementMetaState - The keyboard meta states used for movement.

    event - The key event.

    Returns:

    True if the event was handled.

  • left

    protected boolean left(TextView widget,
               Spannable buffer)

    Performs a left movement action. Moves the cursor or scrolls left by one character.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • right

    protected boolean right(TextView widget,
                Spannable buffer)

    Performs a right movement action. Moves the cursor or scrolls right by one character.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • up

    protected boolean up(TextView widget,
             Spannable buffer)

    Performs an up movement action. Moves the cursor or scrolls up by one line.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • down

    protected boolean down(TextView widget,
               Spannable buffer)

    Performs a down movement action. Moves the cursor or scrolls down by one line.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • pageUp

    protected boolean pageUp(TextView widget,
                 Spannable buffer)

    Performs a page-up movement action. Moves the cursor or scrolls up by one page.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • pageDown

    protected boolean pageDown(TextView widget,
                   Spannable buffer)

    Performs a page-down movement action. Moves the cursor or scrolls down by one page.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • top

    protected boolean top(TextView widget,
              Spannable buffer)

    Performs a top movement action. Moves the cursor or scrolls to the top of the buffer.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • bottom

    protected boolean bottom(TextView widget,
                 Spannable buffer)

    Performs a bottom movement action. Moves the cursor or scrolls to the bottom of the buffer.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • lineStart

    protected boolean lineStart(TextView widget,
                    Spannable buffer)

    Performs a line-start movement action. Moves the cursor or scrolls to the start of the line.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • lineEnd

    protected boolean lineEnd(TextView widget,
                  Spannable buffer)

    Performs a line-end movement action. Moves the cursor or scrolls to the end of the line.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • leftWord

    protected boolean leftWord(TextView widget,
                   Spannable buffer)

  • rightWord

    protected boolean rightWord(TextView widget,
                    Spannable buffer)

  • home

    protected boolean home(TextView widget,
               Spannable buffer)

    Performs a home movement action. Moves the cursor or scrolls to the start of the line or to the top of the document depending on whether the insertion point is being moved or the document is being scrolled.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • end

    protected boolean end(TextView widget,
              Spannable buffer)

    Performs an end movement action. Moves the cursor or scrolls to the start of the line or to the top of the document depending on whether the insertion point is being moved or the document is being scrolled.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • scrollLeft

    protected boolean scrollLeft(TextView widget,
                     Spannable buffer,
                     int amount)

    Performs a scroll left action. Scrolls left by the specified number of characters.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    amount - The number of characters to scroll by. Must be at least 1.

    Returns:

    True if the event was handled.

  • scrollRight

    protected boolean scrollRight(TextView widget,
                      Spannable buffer,
                      int amount)

    Performs a scroll right action. Scrolls right by the specified number of characters.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    amount - The number of characters to scroll by. Must be at least 1.

    Returns:

    True if the event was handled.

  • scrollUp

    protected boolean scrollUp(TextView widget,
                   Spannable buffer,
                   int amount)

    Performs a scroll up action. Scrolls up by the specified number of lines.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    amount - The number of lines to scroll by. Must be at least 1.

    Returns:

    True if the event was handled.

  • scrollDown

    protected boolean scrollDown(TextView widget,
                     Spannable buffer,
                     int amount)

    Performs a scroll down action. Scrolls down by the specified number of lines.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    amount - The number of lines to scroll by. Must be at least 1.

    Returns:

    True if the event was handled.

  • scrollPageUp

    protected boolean scrollPageUp(TextView widget,
                       Spannable buffer)

    Performs a scroll page up action. Scrolls up by one page.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • scrollPageDown

    protected boolean scrollPageDown(TextView widget,
                         Spannable buffer)

    Performs a scroll page up action. Scrolls down by one page.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • scrollTop

    protected boolean scrollTop(TextView widget,
                    Spannable buffer)

    Performs a scroll to top action. Scrolls to the top of the document.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • scrollBottom

    protected boolean scrollBottom(TextView widget,
                       Spannable buffer)

    Performs a scroll to bottom action. Scrolls to the bottom of the document.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • scrollLineStart

    protected boolean scrollLineStart(TextView widget,
                          Spannable buffer)

    Performs a scroll to line start action. Scrolls to the start of the line.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.

  • scrollLineEnd

    protected boolean scrollLineEnd(TextView widget,
                        Spannable buffer)

    Performs a scroll to line end action. Scrolls to the end of the line.

    Parameters:

    widget - The text view.

    buffer - The text buffer.

    Returns:

    True if the event was handled.