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      1 /*
      2 Copyright 1989, 1994, 1998  The Open Group
      3 
      4 Permission to use, copy, modify, distribute, and sell this software and its
      5 documentation for any purpose is hereby granted without fee, provided that
      6 the above copyright notice appear in all copies and that both that
      7 copyright notice and this permission notice appear in supporting
      8 documentation.
      9 
     10 The above copyright notice and this permission notice shall be included in
     11 all copies or substantial portions of the Software.
     12 
     13 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     14 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     15 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
     16 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     17 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     18 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     19 
     20 Except as contained in this notice, the name of The Open Group shall not be
     21 used in advertising or otherwise to promote the sale, use or other dealings
     22 in this Software without prior written authorization from The Open Group.
     23 */
     24 
     25 /*  This is the List widget, it is useful to display a list, without the
     26  *  overhead of having a widget for each item in the list.  It allows
     27  *  the user to select an item in a list and notifies the application through
     28  *  a callback function.
     29  *
     30  *	Created:	8/13/88
     31  *	By:		Chris D. Peterson
     32  *                      MIT X Consortium
     33  */
     34 
     35 #ifndef _XawList_h
     36 #define _XawList_h
     37 
     38 #include <X11/Xaw/Simple.h>
     39 
     40 /* Resources:
     41 
     42  Name		     Class		RepType		Default Value
     43  ----		     -----		-------		-------------
     44  background	     Background		Pixel		XtDefaultBackground
     45  borderColor	     BorderColor	Pixel		XtDefaultForeground
     46  borderWidth	     BorderWidth	Dimension	1
     47  callback            Callback           XtCallbackList  NULL       **6
     48  columnSpacing       Spacing            Dimension       6
     49  cursor		     Cursor		Cursor		left_ptr
     50  cursorName	     Cursor		String		NULL
     51  defaultColumns      Columns            int             2          **5
     52  destroyCallback     Callback		Pointer		NULL
     53  font		     Font		XFontStruct*	XtDefaultFont
     54  forceColumns        Columns            Boolean         False      **5
     55  foreground	     Foreground		Pixel		XtDefaultForeground
     56  height		     Height		Dimension	0          **1
     57  insensitiveBorder   Insensitive	Pixmap		Gray
     58  internalHeight	     Height		Dimension	2
     59  internalWidth	     Width		Dimension	4
     60  list		     List		String*		NULL	   **2
     61  longest             Longest            int             0          **3  **4
     62  mappedWhenManaged   MappedWhenManaged	Boolean		True
     63  numberStrings       NumberStrings      int             0          **4
     64  pasteBuffer         Boolean            Boolean         False
     65  pointerColor	     Foreground		Pixel		XtDefaultForeground
     66  pointerColorBackground Background	Pixel		XtDefaultBackground
     67  rowSpacing          Spacing            Dimension       4
     68  sensitive	     Sensitive		Boolean		True
     69  verticalList        Boolean            Boolean         False
     70  width		     Width		Dimension	0          **1
     71  x		     Position		Position	0
     72  y		     Position		Position	0
     73 
     74  **1 - If the Width or Height of the list widget is zero (0) then the value
     75        is set to the minimum size necessary to fit the entire list.
     76 
     77        If both Width and Height are zero then they are adjusted to fit the
     78        entire list that is created width the number of default columns
     79        specified in the defaultColumns resource.
     80 
     81  **2 - This is an array of strings the specify elements of the list.
     82        This resource must be specified.
     83        (What good is a list widget without a list??  :-)
     84 
     85  **3 - Longest is the length of the widest string in pixels.
     86 
     87  **4 - If either of these values are zero (0) then the list widget calculates
     88        the correct value.
     89 
     90        (This allows you to make startup faster if you already have
     91         this information calculated)
     92 
     93        NOTE: If the numberStrings value is zero the list must
     94              be NULL terminated.
     95 
     96  **5 - By setting the List.Columns resource you can force the application to
     97        have a given number of columns.
     98 
     99  **6 - This returns the name and index of the item selected in an
    100        XawListReturnStruct that is pointed to by the client_data
    101        in the CallbackProc.
    102 
    103 */
    104 
    105 /*
    106  * Value returned when there are no highlighted objects
    107  */
    108 #define XAW_LIST_NONE -1
    109 
    110 #define XtCList "List"
    111 #define XtCSpacing "Spacing"
    112 #define XtCColumns "Columns"
    113 #define XtCLongest "Longest"
    114 #define XtCNumberStrings "NumberStrings"
    115 
    116 #define XtNcursor "cursor"
    117 #define XtNcolumnSpacing "columnSpacing"
    118 #define XtNdefaultColumns "defaultColumns"
    119 #define XtNforceColumns "forceColumns"
    120 #define XtNlist "list"
    121 #define XtNlongest "longest"
    122 #define XtNnumberStrings "numberStrings"
    123 #define XtNpasteBuffer "pasteBuffer"
    124 #define XtNrowSpacing "rowSpacing"
    125 #define XtNverticalList "verticalList"
    126 #define XtNshowCurrent "showCurrent"
    127 
    128 #ifndef XtNfontSet
    129 #define XtNfontSet "fontSet"
    130 #endif
    131 
    132 #ifndef XtCFontSet
    133 #define XtCFontSet "FontSet"
    134 #endif
    135 
    136 extern WidgetClass listWidgetClass;
    137 
    138 typedef struct _ListClassRec *ListWidgetClass;
    139 typedef struct _ListRec      *ListWidget;
    140 
    141 /* list return structure */
    142 typedef struct _XawListReturnStruct {
    143   String string;
    144   int list_index;
    145 } XawListReturnStruct;
    146 
    147 _XFUNCPROTOBEGIN
    148 
    149 /*
    150  * Function:
    151  *	XawListChange
    152  *
    153  * Parameters:
    154  *	w	- list widget
    155  *	list	- new list
    156  *	nitems	- number of items in the list
    157  *	longest - length (in Pixels) of the longest element in the list
    158  *	resize	- if True the the list widget will try to resize itself
    159  *
    160  * Description:
    161  *	Changes the list being used and shown.
    162  *
    163  * Note:
    164  *	If nitems of longest are <= 0 then they will be calculated
    165  *	If nitems is <= 0 then the list needs to be NULL terminated
    166  */
    167 void XawListChange
    168 (
    169  Widget			w,
    170  String			*list,
    171  int			nitems,
    172  int			longest,
    173 #if NeedWidePrototypes
    174  int			resize
    175 #else
    176  Boolean		resize
    177 #endif
    178  );
    179 
    180 /*
    181  * Function:
    182  *	XawListUnhighlight
    183  *
    184  * Parameters:
    185  *	w - list widget
    186  *
    187  * Description:
    188  *	Unlights the current highlighted element.
    189  */
    190 void XawListUnhighlight
    191 (
    192  Widget			w
    193  );
    194 
    195 /*
    196  * Function:
    197  *	XawListHighlight
    198  *
    199  * Parameters:
    200  *	w    - list widget
    201  *	item - item to highlight
    202  *
    203  * Description:
    204  *	Highlights the given item.
    205  */
    206 void XawListHighlight
    207 (
    208  Widget			w,
    209  int			item
    210  );
    211 
    212 
    213 /*
    214  * Function:
    215  *	XawListShowCurrent
    216  *
    217  * Paraneters:
    218  *	w - list widget
    219  *
    220  * Description:
    221  *	Returns the currently highlighted object.
    222  *
    223  * Returns:
    224  *	The info about the currently highlighted object
    225  */
    226 
    227 XawListReturnStruct *XawListShowCurrent
    228 (
    229  Widget			w
    230  );
    231 
    232 _XFUNCPROTOEND
    233 
    234 #endif /* _XawList_h */
    235