Getting right end of text displayed in cells of a JTable column

Hey All,
Platform: WinXP, Java 5.0.
I have a simple one-column table whose cells contain pathnames of user-selected files. The pathnames may be quite long, and when they're too long for the fixed width of the column (the containing JFrame is not resizable), I want the trailing (right) end of the pathnames to visible (so the filenames are visible) and for elipsis to be used on the left side (omitting root directory, etc., if need be). I can't figure out how to do this. I've tried many different approaches. Currently I use a class that extends TableCellRenderer, but no combination of alignment settings in this class seems to do the trick.
I've noticed that in the case of JTextFields, this manner of display seems to be the default, no matter what alignment setting I choose. I can't seem to get the desired effect with the display of cells in my JTable though.
Anyone have any suggestions?
Thanks in advance.

Great job camickr,
That did just what I wanted; you get the points for sure! I will say that It's surprising to me that Swing leaves so much work in calculation to be done for this simple idea.
Btw, I also want to mention here that there's another forum issue I raised and you responded to recently, and you never quite answered my question there:
http://forum.java.sun.com/thread.jspa?forumID=57&threadID=5160875
That's got 10 pts riding on it too, if you care to revisit the issue...
Thanks very much for the good work on the CellRenderer.

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Centering text in a cell in a JTable

Hi,
I have a program that reads in data from a text file and display it in a JTable. My problem is that the data in each cell is not centered, it is left justified within that cell.
How can I fix this.
--kirk

To align a text inside a cell you have to go through the rendering classes of a Jtable. You can do lots of formatting by using a render class. Heres my code that i use.
1. The first code aligns your data centered inside the cell.
2. The second code aligns it like code1 but has an additional character to be printed beside your data inside the text.
///////////// TO USE THE RENDER CODE IN YOUR APPLICATION /////
TableColumn col1 = table.getColumnModel().getColumn(1);
col1.setCellRenderer( new SimpleRenderer());
or
TableColumn col1 = table.getColumnModel().getColumn(1);
col1.setCellRenderer( new SimpleRenderer( "$" ));
///////////// RENDER CODE IS HERE //////////////
import javax.swing.table.*;
import javax.swing.border.*;
import javax.swing.*;
import java.awt.*;
public class SimpleRenderer extends JLabel implements TableCellRenderer
     Border unselectedBorder = null;
     Border selectedBorder = null;
     String text = "";
     Color foreColor = Color.black;
     Color backColor = new java.awt.Color( 217,217,255 );
     Color selectedColor = new java.awt.Color( 217,217,255 );
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     super();
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     setOpaque( true );
     } // end of CONSTRUCTOR
     public SimpleRenderer( Color foreGround, Color backGround )
     super();
     setHorizontalAlignment( JLabel.CENTER );
     setOpaque( true );
     this.foreColor = foreGround;
     this.backColor = backGround;
     } // end of CONSTRUCTOR
     public SimpleRenderer( String data )
     super();
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     setHorizontalAlignment( JLabel.CENTER );
     setOpaque( true );
     } // end of CONSTRUCTOR
     public Component getTableCellRendererComponent(
          JTable table, Object object, boolean isSelected, boolean hasFocus,
                                                                                int row, int column)
     try
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               if ( (row % 2 ) == 1 )
                         setBackground( backColor );
               else
                         setBackground( Color.white );
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               else
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          if (isSelected)
          if (selectedBorder == null)
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               loweredBevel = BorderFactory.createLoweredBevelBorder();
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     } // end of SETFORECOLOR method.
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} /** end of CLASS **/
/////////////

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Hallo !
I have a JTable using the AbstractTableModel.
How can I display the numeric values on the right side of the column?
Wolfgang

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Hi
I'd appreciate it if anyone can help me with this please.
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Hi,
I've got this problem: I'd like to insert a styled text in some cells of a JTable.
The text should be composed of two kinds of Font, to emphasize some characters in it.
Suppose I've done a class Test, that extends JPanel. In this class I've done a method appendChar(String c, boolean bol). With this method I can add a JLabel with only a single char (String of length 1) at a time. If bol is true, it emphasizes the char; if false, it uses the "default" font. For example:
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Getting error while displaying a cell as a button in ALV

Hello All,
I am trying to display a cell in ALV output as pushbutton. The following is the code I am using.
DATA BEGIN OF gt_list OCCURS 0.
        INCLUDE STRUCTURE sflight.
DATA rowcolor(4) TYPE c.
DATA cellcolors TYPE lvc_t_scol.
DATA carrid_handle TYPE int4.
DATA connid_handle TYPE int4.
DATA cellstyles TYPE lvc_t_styl.
DATA END OF gt_list.
LOOP AT gt_list.
      gs_style-fieldname = 'Details'.
      gs_style-style     = cl_gui_alv_grid=>mc_style_button.
      APPEND gs_style TO gt_list-cellstyles.
      MODIFY gt_list.
ENDLOOP.
CALL METHOD gr_alvgrid->set_table_for_first_display
      EXPORTING
        is_layout                     = gs_layout
      CHANGING
        it_outtab                     = gt_list
        it_fieldcatalog               = gt_fieldcat.
But this is giving mr an error message that in call to method set_table_for_first_display type of it_outtab & gt_list do not match.
Could anyone please suggest how to circumvent this error.
Regards
Indrajit.

Hello Indrajit
The following sample report is a variation of a previously published report () showing radiobuttons and pushbuttons (at cell level) within a single ALV list.
*& Report ZUS_SDN_ALV_WITH_RADIOBUTTONS1
*& This program shows how to realize radiobuttons in ALV grid lists
*& using event HOTSPOT_CLICK.
*& In addition it shows how to realize pushbuttons at CELL level.
*& Screen 100:
*& - Flow logic
*&      PROCESS BEFORE OUTPUT.
*&        MODULE PBO.
*&      PROCESS AFTER INPUT.
*&        MODULE PAI.
*& - Screen elements: none
*& - ok-code field -> gd_okcode
*& GUI Status MAIN100:
*& - F3 = 'BACK', Shift+F3 = 'EXIT', F12 = 'CANC'
PROGRAM zus_sdn_alv_with_radiobuttons.
TYPE-POOLS: abap, icon. " INCLUDE <icon>. for releases < 6.20
TYPES: BEGIN OF ty_s_sflight.
INCLUDE TYPE sflight.
TYPES: button1     TYPE iconname.
TYPES: button2     TYPE iconname.
TYPES: button3     TYPE iconname.
TYPES: button4     TYPE iconname.
TYPES: pushbutton TYPE iconname.
TYPES: cellstyles TYPE lvc_t_styl.
TYPES: END OF ty_s_sflight.
DATA:
gt_sflight    TYPE STANDARD TABLE OF ty_s_sflight,
gs_layout     TYPE lvc_s_layo,
gt_fcat       TYPE lvc_t_fcat.
DATA:
gd_okcode    TYPE ui_func,
go_docking   TYPE REF TO cl_gui_docking_container,
go_grid      TYPE REF TO cl_gui_alv_grid.
*       CLASS lcl_eventhandler DEFINITION
CLASS lcl_eventhandler DEFINITION.
PUBLIC SECTION.
    CLASS-METHODS:
      handle_hotspot_click FOR EVENT hotspot_click OF cl_gui_alv_grid
        IMPORTING
          e_row_id
          e_column_id
          es_row_no
          sender,
      handle_button_click FOR EVENT button_click OF cl_gui_alv_grid
        IMPORTING
          es_col_id
          es_row_no
          sender.
ENDCLASS.                    "lcl_eventhandler DEFINITION
*       CLASS lcl_eventhandler IMPLEMENTATION
CLASS lcl_eventhandler IMPLEMENTATION.
METHOD handle_hotspot_click.
* define local data
    FIELD-SYMBOLS:
      <ls_entry>    TYPE ty_s_sflight,
      <ld_fld>      TYPE ANY.
    READ TABLE gt_sflight ASSIGNING <ls_entry> INDEX es_row_no-row_id.
    CHECK ( <ls_entry> IS ASSIGNED ).
*   Set all radio buttons "unselected"
    <ls_entry>-button1 = icon_wd_radio_button_empty.
    <ls_entry>-button2 = icon_wd_radio_button_empty.
    <ls_entry>-button3 = icon_wd_radio_button_empty.
    <ls_entry>-button4 = icon_wd_radio_button_empty.
    ASSIGN COMPONENT e_column_id-fieldname OF STRUCTURE <ls_entry>
                                              TO <ld_fld>.
    IF ( <ld_fld> IS ASSIGNED ).
*     Set selected radio button "selected".
      <ld_fld> = icon_wd_radio_button.
    ENDIF.
*   Force PAI followed by refresh of table display in PBO
    CALL METHOD cl_gui_cfw=>set_new_ok_code
      EXPORTING
        new_code = 'REFRESH'
*      IMPORTING
*        RC       =
ENDMETHOD.                    "handle_hotspot_click
METHOD handle_button_click.
    MESSAGE 'Pushbutton selected' TYPE 'I'.
ENDMETHOD.                    "handle_button_click
ENDCLASS.                    "lcl_eventhandler IMPLEMENTATION
*       MAIN                                                          *
START-OF-SELECTION.
PERFORM select_data.
PERFORM init_controls.
PERFORM build_fieldcatalog.
PERFORM set_layout.
CALL METHOD go_grid->set_table_for_first_display
   EXPORTING
*     i_structure_name = 'SFLIGHT'
      is_layout        = gs_layout
    CHANGING
      it_fieldcatalog = gt_fcat
      it_outtab        = gt_sflight.
* Link docking container to dynpro
CALL METHOD go_docking->link
    EXPORTING
      repid                       = syst-repid
      dynnr                       = '0100'
*      CONTAINER                   =
    EXCEPTIONS
      cntl_error                  = 1
      cntl_system_error           = 2
      lifetime_dynpro_dynpro_link = 3
      OTHERS                      = 4.
IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
CALL SCREEN 100.
END-OF-SELECTION.
*       MODULE PBO OUTPUT                                             *
MODULE pbo OUTPUT.
SET PF-STATUS 'MAIN100'.
ENDMODULE.                    "PBO OUTPUT
*       MODULE PAI INPUT                                              *
MODULE pai INPUT.
* Leave report
CASE gd_okcode.
    WHEN 'BACK' OR
         'EXIT' OR
         'CANC'.
      SET SCREEN 0. LEAVE SCREEN.
*   Refresh table display
    WHEN 'REFRESH'.
      PERFORM refresh_display.
    WHEN OTHERS.
*     do nothing
ENDCASE.
CLEAR gd_okcode.
ENDMODULE.                    "PAI INPUT
*&      Form BUILD_FIELDCATALOG
*       text
* --> p1        text
* <-- p2        text
FORM build_fieldcatalog .
* define local data
DATA:
    ls_fcat        TYPE lvc_s_fcat.
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
*     I_BUFFER_ACTIVE              =
      i_structure_name             = 'ICON'
*     I_CLIENT_NEVER_DISPLAY       = 'X'
*     I_BYPASSING_BUFFER           =
*     I_INTERNAL_TABNAME           =
    CHANGING
      ct_fieldcat                  = gt_fcat
    EXCEPTIONS
      inconsistent_interface       = 1
      program_error                = 2
      OTHERS                       = 3.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
DELETE gt_fcat WHERE ( fieldname <> 'NAME' ).
* NOTE: field ICON-NAME has data element ICONNAME.
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
*     I_BUFFER_ACTIVE              =
      i_structure_name             = 'SFLIGHT'
*     I_CLIENT_NEVER_DISPLAY       = 'X'
*     I_BYPASSING_BUFFER           =
*     I_INTERNAL_TABNAME           =
    CHANGING
      ct_fieldcat                  = gt_fcat
    EXCEPTIONS
      inconsistent_interface       = 1
      program_error                = 2
      OTHERS                       = 3.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
READ TABLE gt_fcat INTO ls_fcat
       WITH KEY fieldname = 'NAME'.
IF ( syst-subrc = 0 ).
    DELETE gt_fcat INDEX syst-tabix.
ENDIF.
ls_fcat-fieldname = 'PUSHBUTTON'.
ls_fcat-coltext   = ls_fcat-fieldname.
** ls_fcat-icon    = 'X'.
ls_fcat-hotspot = 'X'.
INSERT ls_fcat INTO gt_fcat INDEX 5.
ls_fcat-fieldname = 'BUTTON4'.
ls_fcat-coltext   = ls_fcat-fieldname.
ls_fcat-icon    = 'X'.
ls_fcat-hotspot = 'X'.
INSERT ls_fcat INTO gt_fcat INDEX 5.
ls_fcat-fieldname = 'BUTTON3'.
ls_fcat-coltext   = ls_fcat-fieldname.
INSERT ls_fcat INTO gt_fcat INDEX 5.
ls_fcat-fieldname = 'BUTTON2'.
ls_fcat-coltext   = ls_fcat-fieldname.
INSERT ls_fcat INTO gt_fcat INDEX 5.
ls_fcat-fieldname = 'BUTTON1'.
ls_fcat-coltext   = ls_fcat-fieldname.
INSERT ls_fcat INTO gt_fcat INDEX 5.
* Renumbering of the columns
LOOP AT gt_fcat INTO ls_fcat.
    ls_fcat-col_pos = syst-tabix.
    MODIFY gt_fcat FROM ls_fcat INDEX syst-tabix.
ENDLOOP.
ENDFORM.                    " BUILD_FIELDCATALOG
*&      Form SELECT_DATA
*       text
* --> p1        text
* <-- p2        text
FORM select_data .
* define local data
DATA:
    ls_sflight         TYPE ty_s_sflight,
    ld_style           TYPE raw4,
    ls_cellstyle       TYPE lvc_s_styl,
    lt_cellstyles      TYPE lvc_t_styl.
SELECT * FROM sflight INTO CORRESPONDING FIELDS OF TABLE gt_sflight.
ls_sflight-button1 = icon_wd_radio_button. " selected radiobutton
ls_sflight-button2 = icon_wd_radio_button_empty.
ls_sflight-button3 = icon_wd_radio_button_empty.
ls_sflight-button4 = icon_wd_radio_button_empty.
* Alternatively: create icons using function module 'ICON_CREATE'
MODIFY gt_sflight FROM ls_sflight
      TRANSPORTING button1 button2 button3 button4
    WHERE ( carrid IS NOT INITIAL ).
ls_cellstyle-style2 = cl_gui_alv_grid=>mc_style_hotspot.
APPEND ls_cellstyle TO lt_cellstyles.
LOOP AT gt_sflight INTO ls_sflight.
    REFRESH: ls_sflight-cellstyles.
    CLEAR: ls_cellstyle.
    ls_cellstyle-fieldname = 'PUSHBUTTON'.
    IF ( syst-tabix < 6 ).
      ls_sflight-pushbutton = icon_detail.
      ls_cellstyle-style = cl_gui_alv_grid=>mc_style_button.
      APPEND ls_cellstyle TO ls_sflight-cellstyles.
    ELSE.
      ls_sflight-pushbutton = space.
      ls_cellstyle-style = cl_gui_alv_grid=>mc_style_hotspot_no.
      APPEND ls_cellstyle TO ls_sflight-cellstyles.
    ENDIF.
    MODIFY gt_sflight FROM ls_sflight.
ENDLOOP.
ENDFORM.                    " SELECT_DATA
*&      Form INIT_CONTROLS
*       text
* --> p1        text
* <-- p2        text
FORM init_controls .
CHECK ( go_docking IS NOT BOUND ).
* Create docking container
CREATE OBJECT go_docking
    EXPORTING
      parent                      = cl_gui_container=>screen0
*      REPID                       =
*      DYNNR                       =
*      SIDE                        = DOCK_AT_LEFT
*      EXTENSION                   = 50
*      STYLE                       =
*      LIFETIME                    = lifetime_default
*      CAPTION                     =
*      METRIC                      = 0
      ratio                       = 90
*      NO_AUTODEF_PROGID_DYNNR     =
*      NAME                        =
    EXCEPTIONS
      cntl_error                  = 1
      cntl_system_error           = 2
      create_error                = 3
      lifetime_error              = 4
      lifetime_dynpro_dynpro_link = 5
      OTHERS                      = 6.
IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Size of container = full screen size
CALL METHOD go_docking->set_extension
    EXPORTING
      extension = 99999
    EXCEPTIONS
      cntl_error = 1
      OTHERS     = 2.
IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Create ALV grid instance
CREATE OBJECT go_grid
    EXPORTING
*      I_SHELLSTYLE      = 0
*      I_LIFETIME        =
      i_parent          = go_docking
*      I_APPL_EVENTS     = space
*      I_PARENTDBG       =
*      I_APPLOGPARENT    =
*      I_GRAPHICSPARENT =
*      I_NAME            =
*      I_FCAT_COMPLETE   = SPACE
    EXCEPTIONS
      error_cntl_create = 1
      error_cntl_init   = 2
      error_cntl_link   = 3
      error_dp_create   = 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.
*   Set event handler for events
SET HANDLER:
    lcl_eventhandler=>handle_hotspot_click FOR go_grid,
    lcl_eventhandler=>handle_button_click FOR go_grid.
ENDFORM.                    " INIT_CONTROLS
*&      Form REFRESH_DISPLAY
*       Refresh table display after switching the radiobuttons
* --> p1        text
* <-- p2        text
FORM refresh_display .
* define local data
DATA:
    ls_stable    TYPE lvc_s_stbl.
ls_stable-row = abap_true.
ls_stable-col = abap_true.
CALL METHOD go_grid->refresh_table_display
    EXPORTING
      is_stable      = ls_stable
*        I_SOFT_REFRESH =
    EXCEPTIONS
      finished       = 1
      OTHERS         = 2.
IF sy-subrc <> 0.
*     MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*                WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM.                    " REFRESH_DISPLAY
*&      Form SET_LAYOUT
*       Set layout for ALV list
* --> p1        text
* <-- p2        text
FORM set_layout .
CLEAR: gs_layout.
gs_layout-cwidth_opt = abap_true. " optimize column width
gs_layout-zebra      = abap_true.
gs_layout-stylefname = 'CELLSTYLES' .
ENDFORM.                    " SET_LAYOUT

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* "3-bar" menu button (or Tools menu) > Add-ons
In the left column, click Extensions. Then:
(1) Make sure any bookmark-related extensions are enabled. Disabled extensions cluster at the bottom of the list on a gray background.
(2) Use the "gear" button above the list to Check for Updates.
Any improvement?

How do I get back the 'open new tab' button (+ sign at right end of tabs) in Firefox 4 ?

How do I get back the 'open new tab' button (+ sign at right end of tabs) in Firefox 4 ? I realize there is a 'new tab' button at the right end of the toolbar but I like the new tab function placed next the tabs ?

See also:
*Tools > Options > Privacy > History: "Remember search and form history"
*https://support.mozilla.org/kb/Form+autocomplete
The "Use custom settings for history" setting allows to see the current history and cookie settings, but selecting that setting doesn't make any changes to history and cookie settings.<br />
Firefox shows the "Use custom settings for history" setting as an indication that at least one of the history and cookie settings is not the default to make you aware that changes were made.<br />
If all History settings are default then the custom settings are hidden and you see "Firefox will: (Never) Remember History".<br />

Clicking on the downward arrow at the right end of the location bar no longer displays the drop-down list of sites visited, bookmarks and addresses typed in location bar

Since I upgraded to Firefox version 3.6.10, clicking on the downward arrow at the right end of the location bar no longer displays the drop-down list of sites visited, bookmarks and addresses typed in location bar. My Tools > Options > privacy setting is to save history, and if I start typing a previously accessed website's address in the location bar, then the full address appears as a drop-down item. But not when I just click at the right end of the bar.

You can try "Reset all user preferences to Firefox defaults" on the [[Safe mode]] start window.
Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]

Getting right end of text displayed in cells of a JTable column

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