| 1 | /* Copyright Massachusetts Institute of Technology 1985 */ |
| 2 | |
| 3 | #include "copyright.h" |
| 4 | |
| 5 | |
| 6 | /* |
| 7 | * XMenu: MIT Project Athena, X Window system menu package |
| 8 | * |
| 9 | * XMenuInsertSelection - Inserts a selection into an XMenu object |
| 10 | * |
| 11 | * Author: Tony Della Fera, DEC |
| 12 | * 20-Nov-85 |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | #include "XMenuInt.h" |
| 17 | |
| 18 | int |
| 19 | XMenuInsertSelection(register XMenu *menu, register int p_num, register int s_num, char *data, char *label, int active) |
| 20 | /* Menu object to be modified. */ |
| 21 | /* Pane number to be modified. */ |
| 22 | /* Selection number of new selection. */ |
| 23 | /* Data value. */ |
| 24 | /* Selection label. */ |
| 25 | /* Make selection active? */ |
| 26 | { |
| 27 | register XMPane *p_ptr; /* XMPane pointer. */ |
| 28 | register XMSelect *s_ptr; /* XMSelect pointer. */ |
| 29 | |
| 30 | XMSelect *sel; /* Newly created selection. */ |
| 31 | |
| 32 | int label_length; /* Label length in characters. */ |
| 33 | int label_width; /* Label width in pixels. */ |
| 34 | |
| 35 | /* |
| 36 | * Check for NULL pointers! |
| 37 | */ |
| 38 | if (label == NULL) { |
| 39 | _XMErrorCode = XME_ARG_BOUNDS; |
| 40 | return(XM_FAILURE); |
| 41 | } |
| 42 | |
| 43 | /* |
| 44 | * Find the right pane. |
| 45 | */ |
| 46 | p_ptr = _XMGetPanePtr(menu, p_num); |
| 47 | if (p_ptr == NULL) return(XM_FAILURE); |
| 48 | |
| 49 | /* |
| 50 | * Find the selection number one less than the one specified since that |
| 51 | * is the selection after which the insertion will occur. |
| 52 | */ |
| 53 | s_ptr = _XMGetSelectionPtr(p_ptr, (s_num - 1)); |
| 54 | if (s_ptr == NULL) return(XM_FAILURE); |
| 55 | |
| 56 | /* |
| 57 | * Calloc the XMSelect structure. |
| 58 | */ |
| 59 | sel = (XMSelect *)calloc(1, sizeof(XMSelect)); |
| 60 | if (sel == NULL) { |
| 61 | _XMErrorCode = XME_CALLOC; |
| 62 | return(XM_FAILURE); |
| 63 | } |
| 64 | |
| 65 | /* |
| 66 | * Determine label size. |
| 67 | */ |
| 68 | label_length = strlen(label); |
| 69 | label_width = XTextWidth(menu->s_fnt_info, label, label_length); |
| 70 | |
| 71 | |
| 72 | /* |
| 73 | * Fill the XMSelect structure. |
| 74 | */ |
| 75 | if (!strcmp (label, "--") || !strcmp (label, "---")) |
| 76 | { |
| 77 | sel->type = SEPARATOR; |
| 78 | sel->active = 0; |
| 79 | } |
| 80 | else |
| 81 | { |
| 82 | sel->type = SELECTION; |
| 83 | sel->active = active; |
| 84 | } |
| 85 | |
| 86 | sel->active = active; |
| 87 | sel->serial = -1; |
| 88 | sel->label = label; |
| 89 | sel->label_width = label_width; |
| 90 | sel->label_length = label_length; |
| 91 | sel->data = data; |
| 92 | sel->parent_p = p_ptr; |
| 93 | |
| 94 | /* |
| 95 | * Insert the selection after the selection with the selection |
| 96 | * number one less than the desired number for the new selection. |
| 97 | */ |
| 98 | emacs_insque(sel, s_ptr); |
| 99 | |
| 100 | /* |
| 101 | * Update the selection count. |
| 102 | */ |
| 103 | p_ptr->s_count++; |
| 104 | |
| 105 | /* |
| 106 | * Schedule a recompute. |
| 107 | */ |
| 108 | menu->recompute = 1; |
| 109 | |
| 110 | /* |
| 111 | * Return the selection number just inserted. |
| 112 | */ |
| 113 | _XMErrorCode = XME_NO_ERROR; |
| 114 | return(s_num); |
| 115 | } |