android.text
Class Selection

java.lang.Object
  android.text.Selection

public class Selection
extends Object

Utility class for manipulating cursors and selections in CharSequences. A cursor is a selection where the start and end are at the same offset.

Field Summary

static Object	SELECTION_END
static Object	SELECTION_START

Method Summary

static boolean	extendDown(Spannable text, Layout layout) Move the selection end to the buffer offset physically below the current selection end.
static boolean	extendLeft(Spannable text, Layout layout) Move the selection end to the buffer offset physically to the left of the current selection end.
static boolean	extendRight(Spannable text, Layout layout) Move the selection end to the buffer offset physically to the right of the current selection end.
static void	extendSelection(Spannable text, int index) Move the selection edge to offset index.
static boolean	extendToLeftEdge(Spannable text, Layout layout)
static boolean	extendToRightEdge(Spannable text, Layout layout)
static boolean	extendUp(Spannable text, Layout layout) Move the selection end to the buffer offset physically above the current selection end.
static int	getSelectionEnd(CharSequence text) Return the offset of the selection edge or cursor, or -1 if there is no selection or cursor.
static int	getSelectionStart(CharSequence text) Return the offset of the selection anchor or cursor, or -1 if there is no selection or cursor.
static boolean	moveDown(Spannable text, Layout layout) Move the cursor to the buffer offset physically below the current offset, or return false if the cursor is already on the bottom line.
static boolean	moveLeft(Spannable text, Layout layout) Move the cursor to the buffer offset physically to the left of the current offset, or return false if the cursor is already at the left edge of the line and there is not another line to move it to.
static boolean	moveRight(Spannable text, Layout layout) Move the cursor to the buffer offset physically to the right of the current offset, or return false if the cursor is already at at the right edge of the line and there is not another line to move it to.
static boolean	moveToLeftEdge(Spannable text, Layout layout)
static boolean	moveToRightEdge(Spannable text, Layout layout)
static boolean	moveUp(Spannable text, Layout layout) Move the cursor to the buffer offset physically above the current offset, or return false if the cursor is already on the top line.
static void	removeSelection(Spannable text) Remove the selection or cursor, if any, from the text.
static void	selectAll(Spannable text) Select the entire text.
static void	setSelection(Spannable text, int index) Move the cursor to offset index.
static void	setSelection(Spannable text, int start, int stop) Set the selection anchor to start and the selection edge to stop.

Methods inherited from class java.lang.Object

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

Field Detail

SELECTION_START

public static final Object SELECTION_START

SELECTION_END

public static final Object SELECTION_END

Method Detail

getSelectionStart

public static final int getSelectionStart(CharSequence text)

Return the offset of the selection anchor or cursor, or -1 if there is no selection or cursor.

getSelectionEnd

public static final int getSelectionEnd(CharSequence text)

Return the offset of the selection edge or cursor, or -1 if there is no selection or cursor.

setSelection

public static void setSelection(Spannable text,
                                int start,
                                int stop)

Set the selection anchor to start and the selection edge to stop.

setSelection

public static final void setSelection(Spannable text,
                                      int index)

Move the cursor to offset index.

selectAll

public static final void selectAll(Spannable text)

Select the entire text.

extendSelection

public static final void extendSelection(Spannable text,
                                         int index)

Move the selection edge to offset index.

removeSelection

public static final void removeSelection(Spannable text)

Remove the selection or cursor, if any, from the text.

moveUp

public static boolean moveUp(Spannable text,
                             Layout layout)

Move the cursor to the buffer offset physically above the current offset, or return false if the cursor is already on the top line.

moveDown

public static boolean moveDown(Spannable text,
                               Layout layout)

Move the cursor to the buffer offset physically below the current offset, or return false if the cursor is already on the bottom line.

moveLeft

public static boolean moveLeft(Spannable text,
                               Layout layout)

Move the cursor to the buffer offset physically to the left of the current offset, or return false if the cursor is already at the left edge of the line and there is not another line to move it to.

moveRight

public static boolean moveRight(Spannable text,
                                Layout layout)

Move the cursor to the buffer offset physically to the right of the current offset, or return false if the cursor is already at at the right edge of the line and there is not another line to move it to.

extendUp

public static boolean extendUp(Spannable text,
                               Layout layout)

Move the selection end to the buffer offset physically above the current selection end.

extendDown

public static boolean extendDown(Spannable text,
                                 Layout layout)

Move the selection end to the buffer offset physically below the current selection end.

extendLeft

public static boolean extendLeft(Spannable text,
                                 Layout layout)

Move the selection end to the buffer offset physically to the left of the current selection end.

extendRight

public static boolean extendRight(Spannable text,
                                  Layout layout)

Move the selection end to the buffer offset physically to the right of the current selection end.

extendToLeftEdge

public static boolean extendToLeftEdge(Spannable text,
                                       Layout layout)

extendToRightEdge

public static boolean extendToRightEdge(Spannable text,
                                        Layout layout)

moveToLeftEdge

public static boolean moveToLeftEdge(Spannable text,
                                     Layout layout)

moveToRightEdge

public static boolean moveToRightEdge(Spannable text,
                                      Layout layout)