How to highlight a line in a text stream and position the cursor at the end.
I would like to select a line in a text control data stream, highlight the text, and place the cursor at the end of the line so that the text control can be edited at that point.
Depends on what you mean by "highlight". If you mean highlight in the sense of when you use the mouse to select text, then you can't do that and then place the cursor at the end, since that would effectively "unhighlight" the text. You need to use a different kind of "highlight", like turning the text bold or something. This KB article talks about highlighting particular characters: How Do I Highlight Particular Characters in a String Control?
See attached for simple example. Modify as needed.
Attachments:
Text Select.vi 19 KB
Similar Messages
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I am currently implementing an IDE. I try to highlight entire line(not only text but also following blank field) when users set a breakpoint on that line.
Using Highlighter.addhighlight(start, end, HighlightPainter) only allow me to highlight the text part in the line. I haven't figure out how to do that.
Any helps are appreciated.one way to highlight a full line or draw a breakpoint
symbol on a particular is to create a custom highlight
painter and override the paint method. If you want to
highlight the full line then use the width from the
JTextArea and only the y coordinate and height from
the view coordinates.
If you would like a breakpoint symbol and a particular
line then just put a drawImage call in the paint method
which draws an icon on that line
I've included some code for custom painter for both
highlighting a full line and rendering a breakpoint
icon.
private class SingleLineHighlighterPainter extends DefaultHighlighter.DefaultHighlightPainter {
public SingleLineHighlighterPainter( Color color )
{ super( color ); }
* Paints a highlight over a single line.
* just uses the first point a work around only
* @param g the graphics context
* @param offs0 the starting model offset >= 0
* @param offs1 the ending model offset >= offs1
* @param bounds the bounding box for the highlight
* @param c the editor
public void paint(Graphics g, int offs0, int offs1, Shape bounds, JTextComponent c) {
Rectangle alloc = bounds.getBounds();
Rectangle area = c.getBounds();
try {
// --- determine locations ---
TextUI mapper = c.getUI();
Rectangle p0 = mapper.modelToView(c, offs0);
// --- render ---
Color color = getColor();
if (color == null) {
g.setColor(c.getSelectionColor());
else {
g.setColor(color);
// render using just the y coordinates and height from the initial point
g.fillRect(0, p0.y, alloc.width, p0.height);
catch (BadLocationException e) {
// can't render
private class BreakpointPainter extends DefaultHighlighter.DefaultHighlightPainter {
public BreakpointPainter()
{ super( Color.green ); }
* Paints a breakpoint image
* just uses the first point a work around only
* @param g the graphics context
* @param offs0 the starting model offset >= 0
* @param offs1 the ending model offset >= offs1
* @param bounds the bounding box for the highlight
* @param c the editor
public void paint(Graphics g, int offs0, int offs1, Shape bounds, JTextComponent c) {
Rectangle alloc = bounds.getBounds();
Rectangle area = c.getBounds();
try {
// --- determine locations ---
TextUI mapper = c.getUI();
Rectangle p0 = mapper.modelToView(c, offs0);
Image im = ( (ImageIcon) Icons.stopSignIcon ).getImage();
// render using just the y coordinates and height from the initial point
g.drawImage( im,0,p0.y+2,null );
catch (BadLocationException e) {
// can't render
to use these do the following
DefaultHighlighter dh = new DefaultHighlighter();
dh.setDrawsLayeredHighlights( false );
SingleLineHighlighterPainter dhp = new SingleLineHighlighterPainter(Color.green);
BreakpointPainter bpp = new BreakpointPainter();
buff.setHighlighter(dh);
try {
dh.addHighlight(25, 30, dhp); // single line highlighter here
dh.addHighlight(60, 60, bpp); // add breakpoint highlighter here
dh.addHighlight(120,120,bpp); // add breakpoint highlighter here
catch (javax.swing.text.BadLocationException jst) { };
buff.setMargin( new Insets( 0,20,0,0 ) );
where numbers used with the addHighlight method are
the location within the model. In this case the
addHighlight( 25,30, dhp ) will highlight the line with
a view location corresponding to position 25 in
the model. So just need to specify any model location
on the line you want to highlight.
Setting breakpoints is the same just need one model
position on the line where you want the image to be
drawn.
Hope that's clear.
Also helps to look at the source code for
DefaultHighlighter.java.
eric
[email protected] -
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How to position the cursor at the end of the text with EDIT_TEXT?
Hello, it wanted to ask to them if somebody could make work the module of function EDIT_TEXT so that it positions the cursor at the end of the text that is visualizing in the text editor. In the documentation it says that passing a ' X' to him in the field scrollend of the parameter Control is obtained that operation. Nevertheless, I did this and the cursor continues appearing at the beginning of the text that visualizes.
Somebody could help me please?
Regards,
Gabriel
PD: The code that I use is the following one:
FORM f_ingresar_comentarios.
DATA: l_action,
l_result LIKE itcer,
l_pedido LIKE thead-tdname,
li_coment_save LIKE i_comentarios OCCURS 0,
li_coment_aux LIKE i_comentarios OCCURS 0 WITH HEADER LINE,
l_lines TYPE i,
l_lines_save TYPE i,
l_lines_insert TYPE i,
l_index TYPE i,
l_index_aux TYPE i,
l_insert,
lwa_control LIKE itced.
CLEAR: l_action.
CLEAR i_comentarios.
REFRESH: i_comentarios,
li_coment_save,
li_coment_aux.
l_pedido = v_pedido.
Leemos el texto si es que existe
CALL FUNCTION 'READ_TEXT'
EXPORTING
client = sy-mandt
id = v_id_text
language = sy-langu
name = l_pedido
object = c_ekko
IMPORTING
header = wa_cabecera
TABLES
lines = i_comentarios "Lineas de texto leídas
EXCEPTIONS
id = 1
language = 2
name = 3
not_found = 4
object = 5
reference_check = 6
wrong_access_to_archive = 7
OTHERS = 8.
IF sy-subrc <> 0.
Armamos la cabecera por primer comentario para el pedido
CLEAR wa_cabecera.
wa_cabecera-tdobject = c_ekko. "Objeto en tabla TTXID
wa_cabecera-tdname = v_pedido. "Nro de pedido
wa_cabecera-tdid = v_id_text. "ID en tabla TTXID
wa_cabecera-tdspras = sy-langu. "Lenguaje
wa_cabecera-tdlinesize = 70.
ENDIF.
Salva comentarios originales
li_coment_save[] = i_comentarios[].
lwa_control-scrollend = c_x. " c_x = 'X'
Abre el editor de texto
CALL FUNCTION 'EDIT_TEXT'
EXPORTING
header = wa_cabecera
save = space
control = lwa_control
IMPORTING
newheader = wa_cabecera
function = l_action
RESULT = l_result
TABLES
lines = i_comentarios
EXCEPTIONS
object = 1
id = 2
language = 3
name = 4
linesize = 5.
Si cambio los comentarios, actualiza comentarios
CASE l_action.
WHEN c_unchanged.
WHEN c_delete.
WHEN c_update OR
c_insert.
Obtiene cantidad de lineas de comentarios originales y modificados
DESCRIBE TABLE li_coment_save LINES l_lines_save.
DESCRIBE TABLE i_comentarios LINES l_lines.
Si se insertaron lineas...
IF l_lines > l_lines_save.
Calcula cantidad de lineas a insertar para luego calcular valor de
indice a partir del cual insertar los nuevos comentarios
l_lines_insert = l_lines - l_lines_save.
l_index = ( l_lines - l_lines_insert ) + 1.
Controla que al menos una de las lineas insertadas sea diferente de
blanco
l_index_aux = l_lines.
l_insert = c_n.
DO l_lines_insert TIMES.
READ TABLE i_comentarios INDEX l_index_aux.
IF sy-subrc = 0 AND
i_comentarios-tdline <> space.
l_insert = c_s.
EXIT.
ENDIF.
l_index_aux = l_index_aux - 1.
ENDDO.
IF l_insert = c_s.
Carga comentarios originales y agrega lineas insertadas
li_coment_aux[] = li_coment_save[].
APPEND LINES OF i_comentarios
FROM l_index
TO l_lines
TO li_coment_aux.
Setea variable para indicar actualizacion de comentarios.
v_comentario = 'S'.
Agrega usuario y fecha del comentario
CONCATENATE sy-uname
sy-datum
INTO li_coment_aux-tdline
SEPARATED BY space.
li_coment_aux-tdformat = '*'.
APPEND li_coment_aux.
Grabamos el texto
CALL FUNCTION 'SAVE_TEXT'
EXPORTING
client = sy-mandt
header = wa_cabecera
savemode_direct = c_x
IMPORTING
newheader = wa_cabecera
TABLES
lines = li_coment_aux
EXCEPTIONS
id = 1
language = 2
name = 3
object = 4
OTHERS = 5.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
ENDIF.
ENDIF.
ENDCASE.
ENDFORM. " f_ingresar_comentarios
In addition, I made another program simpler that it uses the same functions and also have the same problem:
*& Report Y_GVA_TEXT *
REPORT y_gva_text .
DATA: wa_cabecera LIKE thead,
i_comentarios LIKE tline OCCURS 0 WITH HEADER LINE.
DATA: l_action,
v_comentario,
l_result LIKE itcer,
v_pedido LIKE thead-tdname VALUE '3',
l_pedido LIKE thead-tdname,
c_a05 LIKE thead-tdid VALUE 'A05',
c_ekko LIKE stxh-tdobject VALUE 'EKKO',
l_lines LIKE sy-tabix,
lwa_control LIKE itced.
CONSTANTS: c_x VALUE 'X',
update VALUE 'U', "Langtext verändert
insert VALUE 'I', "Langtext eingefügt
delete VALUE 'D', "Langtext gelöscht
modify VALUE 'M', "Kein Langtext, Inlinezeile veränd.
unchanged VALUE ' '.
CLEAR: l_action.
CLEAR i_comentarios.
REFRESH i_comentarios.
Leemos el texto si es que existe
CALL FUNCTION 'READ_TEXT'
EXPORTING
client = sy-mandt
id = c_a05
language = sy-langu
name = v_pedido
object = c_ekko
IMPORTING
header = wa_cabecera
TABLES
lines = i_comentarios "Lineas de texto leídas
EXCEPTIONS
id = 1
language = 2
name = 3
not_found = 4
object = 5
reference_check = 6
wrong_access_to_archive = 7
OTHERS = 8.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE 'I' NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
Armamos las cabecera para mostrar los comentarios
CLEAR wa_cabecera.
wa_cabecera-tdobject = c_ekko. "Objeto en tabla TTXID
wa_cabecera-tdname = v_pedido. "Nro de pedido
wa_cabecera-tdid = c_a05. "ID en tabla TTXID
wa_cabecera-tdspras = sy-langu. "Lenguaje
wa_cabecera-tdlinesize = 70.
ENDIF.
lwa_control-noendlines = c_x.
lwa_control-scrollend = c_x.
Abre el editor de texto
CALL FUNCTION 'EDIT_TEXT'
EXPORTING
header = wa_cabecera
save = space
control = lwa_control
IMPORTING
newheader = wa_cabecera
function = l_action
RESULT = l_result
TABLES
lines = i_comentarios
EXCEPTIONS
object = 1
id = 2
language = 3
name = 4
linesize = 5.
Si cambio los comentarios, actualiza comentarios
CASE l_action.
WHEN unchanged.
WHEN delete.
WHEN update OR
insert.
Agrega usuario y fecha del comentario
CONCATENATE sy-uname
sy-datum
INTO i_comentarios-tdline
SEPARATED BY space.
i_comentarios-tdformat = '*'.
APPEND i_comentarios.
CALL FUNCTION 'SAVE_TEXT'
EXPORTING
header = wa_cabecera
IMPORTING
newheader = wa_cabecera
TABLES
lines = i_comentarios.
ENDCASE.Murugesh,
I believe that you have mis-read Gabriel's problem.
Gabriel,
The cursor is not positioning at the base of the editor as you have cited.
In order to get this functionality to work, you must set the LINE_EDITOR import paramter to 'X'.
data: hdr like THEAD.
data: l_itced like itced.
hdr-tdobject = 'VBBP'.
hdr-tdname = '4000029521000030'.
hdr-tdid = 'Z005'.
hdr-tdspras = 'E'.
hdr-TDLINESIZE = '100'.
hdr-TDTXTLINES = '3'.
l_itced-SCROLLEND = 'X'.
CALL FUNCTION 'EDIT_TEXT'
EXPORTING
DISPLAY = ' '
EDITOR_TITLE = ' '
HEADER = hdr
PAGE = ' '
WINDOW = ' '
SAVE = 'X'
LINE_EDITOR = 'X' " here !!!
CONTROL = l_itced
PROGRAM = ' '
LOCAL_CAT = ' '
IMPORTING
FUNCTION =
NEWHEADER =
RESULT =
TABLES
LINES = lines
EXCEPTIONS
ID = 1
LANGUAGE = 2
LINESIZE = 3
NAME = 4
OBJECT = 5
TEXTFORMAT = 6
COMMUNICATION = 7
OTHERS = 8
Don't forget those points !! -
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ChrisHello,
You can also use the good old win_api_shell.sendkeys() d2kwutil function, that works also fine with Web versions.
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how to replace cursor logic
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Caroline
National Intruments
Thanks,
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National Instruments -
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