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.
Summary
Public methods |
|---|
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
final
void
|
extendSelection(Spannable text, int index)
Move the selection edge to offset index.
|
static
boolean
|
extendToLeftEdge(Spannable text, Layout layout)
|
static
boolean
|
extendToParagraphEnd(Spannable text)
Extend the selection to the closest paragraph end offset.
|
static
boolean
|
extendToParagraphStart(Spannable text)
Extend the selection to the closest paragraph start offset.
|
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
final
int
|
getSelectionEnd(CharSequence text)
Return the offset of the selection edge or cursor, or -1 if
there is no selection or cursor.
|
static
final
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, to the end of the buffer if it is on the bottom line but
not at the end, or return false if the cursor is already at the
end of the buffer.
|
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
|
moveToParagraphEnd(Spannable text, Layout layout)
Move the cursor to the closest paragraph end offset.
|
static
boolean
|
moveToParagraphStart(Spannable text, Layout layout)
Move the cusrot to the closest paragraph start offset.
|
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, to the beginning if it is on the top line but not at the
start, or return false if the cursor is already on the top line.
|
static
final
void
|
removeSelection(Spannable text)
Remove the selection or cursor, if any, from the text.
|
static
final
void
|
selectAll(Spannable text)
Select the entire text.
|
static
void
|
setSelection(Spannable text, int start, int stop)
Set the selection anchor to start and the selection edge
to stop.
|
static
final
void
|
setSelection(Spannable text, int index)
Move the cursor to offset index.
|
Inherited methods |
|---|
From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object.
|
int
|
hashCode()
Returns a hash code value for the object.
|
final
void
|
notify()
Wakes up a single thread that is waiting on this object's
monitor.
|
final
void
|
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait(long timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted.
|
|
Fields
SELECTION_END
public static final Object SELECTION_END
SELECTION_START
public static final Object SELECTION_START
Public methods
extendDown
public static boolean extendDown (Spannable text,
Layout layout)
Move the selection end to the buffer offset physically below
the current selection end.
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
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.
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
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.
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
extendSelection
public static final void extendSelection (Spannable text,
int index)
Move the selection edge to offset index.
| Parameters |
|---|
text |
Spannable |
index |
int |
extendToLeftEdge
public static boolean extendToLeftEdge (Spannable text,
Layout layout)
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
extendToParagraphEnd
public static boolean extendToParagraphEnd (Spannable text)
Extend the selection to the closest paragraph end offset.
| Parameters |
|---|
text |
Spannable: the spannable text
This value cannot be null. |
| Returns |
|---|
boolean |
true if the selection is extended, otherwise false |
extendToParagraphStart
public static boolean extendToParagraphStart (Spannable text)
Extend the selection to the closest paragraph start offset.
| Parameters |
|---|
text |
Spannable: the spannable text
This value cannot be null. |
| Returns |
|---|
boolean |
true if the selection is extended, otherwise false |
extendToRightEdge
public static boolean extendToRightEdge (Spannable text,
Layout layout)
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
extendUp
public static boolean extendUp (Spannable text,
Layout layout)
Move the selection end to the buffer offset physically above
the current selection end.
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
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.
| Parameters |
|---|
text |
CharSequence |
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.
| Parameters |
|---|
text |
CharSequence |
moveDown
public static boolean moveDown (Spannable text,
Layout layout)
Move the cursor to the buffer offset physically below the current
offset, to the end of the buffer if it is on the bottom line but
not at the end, or return false if the cursor is already at the
end of the buffer.
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
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.
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
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.
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
moveToLeftEdge
public static boolean moveToLeftEdge (Spannable text,
Layout layout)
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
moveToParagraphEnd
public static boolean moveToParagraphEnd (Spannable text,
Layout layout)
Move the cursor to the closest paragraph end offset.
| Parameters |
|---|
text |
Spannable: the spannable text
This value cannot be null. |
layout |
Layout: layout to be used for drawing.
This value cannot be null. |
| Returns |
|---|
boolean |
true if the cursor is moved, otherwise false. |
moveToParagraphStart
public static boolean moveToParagraphStart (Spannable text,
Layout layout)
Move the cusrot to the closest paragraph start offset.
| Parameters |
|---|
text |
Spannable: the spannable text
This value cannot be null. |
layout |
Layout: layout to be used for drawing.
This value cannot be null. |
| Returns |
|---|
boolean |
true if the cursor is moved, otherwise false. |
moveToRightEdge
public static boolean moveToRightEdge (Spannable text,
Layout layout)
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
moveUp
public static boolean moveUp (Spannable text,
Layout layout)
Move the cursor to the buffer offset physically above the current
offset, to the beginning if it is on the top line but not at the
start, or return false if the cursor is already on the top line.
| Parameters |
|---|
text |
Spannable |
layout |
Layout |
removeSelection
public static final void removeSelection (Spannable text)
Remove the selection or cursor, if any, from the text.
| Parameters |
|---|
text |
Spannable |
selectAll
public static final void selectAll (Spannable text)
Select the entire text.
| Parameters |
|---|
text |
Spannable |
setSelection
public static void setSelection (Spannable text,
int start,
int stop)
Set the selection anchor to start and the selection edge
to stop.
| Parameters |
|---|
text |
Spannable |
start |
int |
stop |
int |
setSelection
public static final void setSelection (Spannable text,
int index)
Move the cursor to offset index.
| Parameters |
|---|
text |
Spannable |
index |
int |
