Spec-Zone .ru
спецификации, руководства, описания, API
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JavaTM 2 Platform Std. Ed. v1.3.1 |
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A place within a document view that represents where things can be inserted into the document model. A caret has a position in the document referred to as a dot. The dot is where the caret is currently located in the model. There is a second position maintained by the caret that represents the other end of a selection called mark. If there is no selection the dot and mark will be equal. If a selection exists, the two values will be different.
The dot can be placed by either calling
setDot
or moveDot
. Setting
the dot has the effect of removing any selection that may
have previously existed. The dot and mark will be equal.
Moving the dot has the effect of creating a selection as
the mark is left at whatever position it previously had.
Method Summary | |
void |
addChangeListener(ChangeListener l)
Adds a listener to track whenever the caret position has been changed. |
void |
deinstall(JTextComponent c)
Called when the UI is being removed from the interface of a JTextComponent. |
int |
getBlinkRate()
Gets the blink rate of the caret. |
int |
getDot()
Fetches the current position of the caret. |
Point |
getMagicCaretPosition()
Gets the current caret visual location. |
int |
getMark()
Fetches the current position of the mark. |
void |
install(JTextComponent c)
Called when the UI is being installed into the interface of a JTextComponent. |
boolean |
isSelectionVisible()
Determines if the selection is currently visible. |
boolean |
isVisible()
Determines if the caret is currently visible. |
void |
moveDot(int dot)
Moves the caret position (dot) to some other position, leaving behind the mark. |
void |
paint(Graphics g)
Renders the caret. |
void |
removeChangeListener(ChangeListener l)
Removes a listener that was tracking caret position changes. |
void |
setBlinkRate(int rate)
Sets the blink rate of the caret. |
void |
setDot(int dot)
Sets the caret position to some position. |
void |
setMagicCaretPosition(Point p)
Set the current caret visual location. |
void |
setSelectionVisible(boolean v)
Sets the visibility of the selection |
void |
setVisible(boolean v)
Sets the visibility of the caret. |
Method Detail |
public void install(JTextComponent c)
c
- the JTextComponentpublic void deinstall(JTextComponent c)
c
- the JTextComponentpublic void paint(Graphics g)
g
- the graphics contextpublic void addChangeListener(ChangeListener l)
l
- the change listenerpublic void removeChangeListener(ChangeListener l)
l
- the change listenerpublic boolean isVisible()
public void setVisible(boolean v)
v
- true if the caret should be shown,
and false if the caret should be hiddenpublic boolean isSelectionVisible()
public void setSelectionVisible(boolean v)
v
- true if the caret should be shown,
and false if the caret should be hiddenpublic void setMagicCaretPosition(Point p)
p
- the Point to use for the saved position. This
can be null to indicate there is no visual location.public Point getMagicCaretPosition()
setMagicCaretPosition(java.awt.Point)
public void setBlinkRate(int rate)
rate
- the delay in milliseconds >= 0. If this is
zero the caret will not blink.public int getBlinkRate()
public int getDot()
public int getMark()
public void setDot(int dot)
dot
- the new position to set the caret to >= 0public void moveDot(int dot)
dot
- the new position to move the caret to >= 0
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JavaTM 2 Platform Std. Ed. v1.3.1 |
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PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
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