Index: treeview.c
===================================================================
--- treeview.c (nonexistent)
+++ treeview.c (revision 5)
@@ -0,0 +1,675 @@
+/*
+ * $Id: treeview.c,v 1.43 2020/11/23 00:38:31 tom Exp $
+ *
+ * treeview.c -- implements the treeview dialog
+ *
+ * Copyright 2012-2019,2020 Thomas E. Dickey
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License, version 2.1
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to
+ * Free Software Foundation, Inc.
+ * 51 Franklin St., Fifth Floor
+ * Boston, MA 02110, USA.
+ */
+
+#include <dlg_internals.h>
+#include <dlg_keys.h>
+
+#define INDENT 3
+#define MIN_HIGH (1 + (5 * MARGIN))
+
+typedef struct {
+ /* the outer-window */
+ WINDOW *dialog;
+ bool is_check;
+ int box_y;
+ int box_x;
+ int check_x;
+ int item_x;
+ int use_height;
+ int use_width;
+ /* the inner-window */
+ WINDOW *list;
+ DIALOG_LISTITEM *items;
+ int item_no;
+ int *depths;
+ const char *states;
+} ALL_DATA;
+
+/*
+ * Print list item. The 'selected' parameter is true if 'choice' is the
+ * current item. That one is colored differently from the other items.
+ */
+static void
+print_item(ALL_DATA * data,
+ DIALOG_LISTITEM * item,
+ const char *states,
+ int depths,
+ int choice,
+ int selected)
+{
+ WINDOW *win = data->list;
+ chtype save = dlg_get_attrs(win);
+ int i;
+ bool first = TRUE;
+ int climit = (getmaxx(win) - data->check_x + 1);
+ const char *show = (dialog_vars.no_items
+ ? item->name
+ : item->text);
+
+ /* Clear 'residue' of last item */
+ dlg_attrset(win, menubox_attr);
+ (void) wmove(win, choice, 0);
+ for (i = 0; i < data->use_width; i++)
+ (void) waddch(win, ' ');
+
+ (void) wmove(win, choice, data->check_x);
+ dlg_attrset(win, selected ? check_selected_attr : check_attr);
+ (void) wprintw(win,
+ data->is_check ? "[%c]" : "(%c)",
+ states[item->state]);
+ dlg_attrset(win, menubox_attr);
+
+ dlg_attrset(win, selected ? item_selected_attr : item_attr);
+ for (i = 0; i < depths; ++i) {
+ int j;
+ (void) wmove(win, choice, data->item_x + INDENT * i);
+ (void) waddch(win, ACS_VLINE);
+ for (j = INDENT - 1; j > 0; --j)
+ (void) waddch(win, ' ');
+ }
+ (void) wmove(win, choice, data->item_x + INDENT * depths);
+
+ dlg_print_listitem(win, show, climit, first, selected);
+
+ if (selected) {
+ dlg_item_help(item->help);
+ }
+ dlg_attrset(win, save);
+}
+
+static void
+print_list(ALL_DATA * data,
+ int choice,
+ int scrollamt,
+ int max_choice)
+{
+ int i;
+ int cur_y, cur_x;
+
+ getyx(data->dialog, cur_y, cur_x);
+
+ for (i = 0; i < max_choice; i++) {
+ print_item(data,
+ &data->items[scrollamt + i],
+ data->states,
+ data->depths[scrollamt + i],
+ i, i == choice);
+ }
+ (void) wnoutrefresh(data->list);
+
+ dlg_draw_scrollbar(data->dialog,
+ (long) (scrollamt),
+ (long) (scrollamt),
+ (long) (scrollamt + max_choice),
+ (long) (data->item_no),
+ data->box_x + data->check_x,
+ data->box_x + data->use_width,
+ data->box_y,
+ data->box_y + data->use_height + 1,
+ menubox_border2_attr,
+ menubox_border_attr);
+
+ (void) wmove(data->dialog, cur_y, cur_x);
+}
+
+static bool
+check_hotkey(DIALOG_LISTITEM * items, int choice)
+{
+ bool result = FALSE;
+
+ if (dlg_match_char(dlg_last_getc(),
+ (dialog_vars.no_tags
+ ? items[choice].text
+ : items[choice].name))) {
+ result = TRUE;
+ }
+ return result;
+}
+
+/*
+ * This is an alternate interface to 'treeview' which allows the application
+ * to read the list item states back directly without putting them in the
+ * output buffer.
+ */
+int
+dlg_treeview(const char *title,
+ const char *cprompt,
+ int height,
+ int width,
+ int list_height,
+ int item_no,
+ DIALOG_LISTITEM * items,
+ const char *states,
+ int *depths,
+ int flag,
+ int *current_item)
+{
+ /* *INDENT-OFF* */
+ static DLG_KEYS_BINDING binding[] = {
+ HELPKEY_BINDINGS,
+ ENTERKEY_BINDINGS,
+ DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
+ DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
+ DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
+ DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
+ DLG_KEYS_DATA( DLGK_ITEM_FIRST, KEY_HOME ),
+ DLG_KEYS_DATA( DLGK_ITEM_LAST, KEY_END ),
+ DLG_KEYS_DATA( DLGK_ITEM_LAST, KEY_LL ),
+ DLG_KEYS_DATA( DLGK_ITEM_NEXT, '+' ),
+ DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_DOWN ),
+ DLG_KEYS_DATA( DLGK_ITEM_NEXT, CHR_NEXT ),
+ DLG_KEYS_DATA( DLGK_ITEM_PREV, '-' ),
+ DLG_KEYS_DATA( DLGK_ITEM_PREV, KEY_UP ),
+ DLG_KEYS_DATA( DLGK_ITEM_PREV, CHR_PREVIOUS ),
+ DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NPAGE ),
+ DLG_KEYS_DATA( DLGK_PAGE_NEXT, DLGK_MOUSE(KEY_NPAGE) ),
+ DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PPAGE ),
+ DLG_KEYS_DATA( DLGK_PAGE_PREV, DLGK_MOUSE(KEY_PPAGE) ),
+ TOGGLEKEY_BINDINGS,
+ END_KEYS_BINDING
+ };
+ /* *INDENT-ON* */
+
+#ifdef KEY_RESIZE
+ int old_height = height;
+ int old_width = width;
+#endif
+ ALL_DATA all;
+ int i, j, key2, found, x, y, cur_y, box_x, box_y;
+ int key, fkey;
+ int button = dialog_state.visit_items ? -1 : dlg_default_button();
+ int choice = dlg_default_listitem(items);
+ int scrollamt = 0;
+ int max_choice;
+ int use_height;
+ int use_width, name_width, text_width, tree_width;
+ int result = DLG_EXIT_UNKNOWN;
+ int num_states;
+ WINDOW *dialog, *list;
+ char *prompt = dlg_strclone(cprompt);
+ const char **buttons = dlg_ok_labels();
+ const char *widget_name;
+
+ /* we need at least two states */
+ if (states == 0 || strlen(states) < 2)
+ states = " *";
+ num_states = (int) strlen(states);
+
+ dialog_state.plain_buttons = TRUE;
+
+ memset(&all, 0, sizeof(all));
+ all.items = items;
+ all.item_no = item_no;
+ all.states = states;
+ all.depths = depths;
+
+ dlg_does_output();
+ dlg_tab_correct_str(prompt);
+
+ /*
+ * If this is a radiobutton list, ensure that no more than one item is
+ * selected initially. Allow none to be selected, since some users may
+ * wish to provide this flavor.
+ */
+ if (flag == FLAG_RADIO) {
+ bool first = TRUE;
+
+ for (i = 0; i < item_no; i++) {
+ if (items[i].state) {
+ if (first) {
+ first = FALSE;
+ } else {
+ items[i].state = 0;
+ }
+ }
+ }
+ } else {
+ all.is_check = TRUE;
+ }
+ widget_name = "treeview";
+#ifdef KEY_RESIZE
+ retry:
+#endif
+
+ use_height = list_height;
+ use_width = dlg_calc_list_width(item_no, items) + 10;
+ use_width = MAX(26, use_width);
+ if (use_height == 0) {
+ /* calculate height without items (4) */
+ dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, use_width);
+ dlg_calc_listh(&height, &use_height, item_no);
+ } else {
+ dlg_auto_size(title, prompt, &height, &width, MIN_HIGH + use_height, use_width);
+ }
+ dlg_button_layout(buttons, &width);
+ dlg_print_size(height, width);
+ dlg_ctl_size(height, width);
+
+ x = dlg_box_x_ordinate(width);
+ y = dlg_box_y_ordinate(height);
+
+ dialog = dlg_new_window(height, width, y, x);
+ dlg_register_window(dialog, widget_name, binding);
+ dlg_register_buttons(dialog, widget_name, buttons);
+
+ dlg_mouse_setbase(x, y);
+
+ dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
+ dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
+ dlg_draw_title(dialog, title);
+
+ dlg_attrset(dialog, dialog_attr);
+ dlg_print_autowrap(dialog, prompt, height, width);
+
+ all.use_width = width - 4;
+ cur_y = getcury(dialog);
+ box_y = cur_y + 1;
+ box_x = (width - all.use_width) / 2 - 1;
+
+ /*
+ * After displaying the prompt, we know how much space we really have.
+ * Limit the list to avoid overwriting the ok-button.
+ */
+ if (use_height + MIN_HIGH > height - cur_y)
+ use_height = height - MIN_HIGH - cur_y;
+ if (use_height <= 0)
+ use_height = 1;
+
+ max_choice = MIN(use_height, item_no);
+
+ /* create new window for the list */
+ list = dlg_sub_window(dialog, use_height, all.use_width,
+ y + box_y + 1, x + box_x + 1);
+
+ /* draw a box around the list items */
+ dlg_draw_box(dialog, box_y, box_x,
+ use_height + 2 * MARGIN,
+ all.use_width + 2 * MARGIN,
+ menubox_border_attr, menubox_border2_attr);
+
+ text_width = 0;
+ name_width = 0;
+ tree_width = 0;
+ /* Find length of longest item to center treeview */
+ for (i = 0; i < item_no; i++) {
+ tree_width = MAX(tree_width, INDENT * depths[i]);
+ text_width = MAX(text_width, dlg_count_columns(items[i].text));
+ name_width = MAX(name_width, dlg_count_columns(items[i].name));
+ }
+ if (dialog_vars.no_tags && !dialog_vars.no_items) {
+ tree_width += text_width;
+ } else if (dialog_vars.no_items) {
+ tree_width += name_width;
+ } else {
+ tree_width += (text_width + name_width);
+ }
+
+ use_width = (all.use_width - 4);
+ tree_width = MIN(tree_width, all.use_width);
+
+ all.check_x = (use_width - tree_width) / 2;
+ all.item_x = ((dialog_vars.no_tags
+ ? 0
+ : (dialog_vars.no_items
+ ? 0
+ : (2 + name_width)))
+ + all.check_x + 4);
+
+ /* ensure we are scrolled to show the current choice */
+ if (choice >= (max_choice + scrollamt)) {
+ scrollamt = choice - max_choice + 1;
+ choice = max_choice - 1;
+ }
+
+ /* register the new window, along with its borders */
+ dlg_mouse_mkbigregion(box_y + 1, box_x,
+ use_height, all.use_width + 2,
+ KEY_MAX, 1, 1, 1 /* by lines */ );
+
+ all.dialog = dialog;
+ all.box_x = box_x;
+ all.box_y = box_y;
+ all.use_height = use_height;
+ all.list = list;
+ print_list(&all, choice, scrollamt, max_choice);
+
+ dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
+
+ dlg_trace_win(dialog);
+
+ while (result == DLG_EXIT_UNKNOWN) {
+ int was_mouse;
+
+ if (button < 0) /* --visit-items */
+ wmove(dialog, box_y + choice + 1, box_x + all.check_x + 2);
+
+ key = dlg_mouse_wgetch(dialog, &fkey);
+ if (dlg_result_key(key, fkey, &result)) {
+ if (!dlg_button_key(result, &button, &key, &fkey))
+ break;
+ }
+
+ was_mouse = (fkey && is_DLGK_MOUSE(key));
+ if (was_mouse)
+ key -= M_EVENT;
+
+ if (was_mouse && (key >= KEY_MAX)) {
+ i = (key - KEY_MAX);
+ if (i < max_choice) {
+ choice = (key - KEY_MAX);
+ print_list(&all, choice, scrollamt, max_choice);
+
+ key = DLGK_TOGGLE; /* force the selected item to toggle */
+ } else {
+ beep();
+ continue;
+ }
+ fkey = FALSE;
+ } else if (was_mouse && key >= KEY_MIN) {
+ key = dlg_lookup_key(dialog, key, &fkey);
+ }
+
+ /*
+ * A space toggles the item status.
+ */
+ if (key == DLGK_TOGGLE) {
+ int current = scrollamt + choice;
+ int next = items[current].state + 1;
+
+ if (next >= num_states)
+ next = 0;
+
+ if (flag == FLAG_CHECK) { /* checklist? */
+ items[current].state = next;
+ } else {
+ for (i = 0; i < item_no; i++) {
+ if (i != current) {
+ items[i].state = 0;
+ }
+ }
+ if (items[current].state) {
+ items[current].state = next ? next : 1;
+ } else {
+ items[current].state = 1;
+ }
+ }
+ print_list(&all, choice, scrollamt, max_choice);
+ continue; /* wait for another key press */
+ }
+
+ /*
+ * Check if key pressed matches first character of any item tag in
+ * list. If there is more than one match, we will cycle through
+ * each one as the same key is pressed repeatedly.
+ */
+ found = FALSE;
+ if (!fkey) {
+ if (button < 0 || !dialog_state.visit_items) {
+ for (j = scrollamt + choice + 1; j < item_no; j++) {
+ if (check_hotkey(items, j)) {
+ found = TRUE;
+ i = j - scrollamt;
+ break;
+ }
+ }
+ if (!found) {
+ for (j = 0; j <= scrollamt + choice; j++) {
+ if (check_hotkey(items, j)) {
+ found = TRUE;
+ i = j - scrollamt;
+ break;
+ }
+ }
+ }
+ if (found)
+ dlg_flush_getc();
+ } else if ((j = dlg_char_to_button(key, buttons)) >= 0) {
+ button = j;
+ ungetch('\n');
+ continue;
+ }
+ }
+
+ /*
+ * A single digit (1-9) positions the selection to that line in the
+ * current screen.
+ */
+ if (!found
+ && (key <= '9')
+ && (key > '0')
+ && (key - '1' < max_choice)) {
+ found = TRUE;
+ i = key - '1';
+ }
+
+ if (!found) {
+ if (fkey) {
+ found = TRUE;
+ switch (key) {
+ case DLGK_ITEM_FIRST:
+ i = -scrollamt;
+ break;
+ case DLGK_ITEM_LAST:
+ i = item_no - 1 - scrollamt;
+ break;
+ case DLGK_PAGE_PREV:
+ if (choice)
+ i = 0;
+ else if (scrollamt != 0)
+ i = -MIN(scrollamt, max_choice);
+ else
+ continue;
+ break;
+ case DLGK_PAGE_NEXT:
+ i = MIN(choice + max_choice, item_no - scrollamt - 1);
+ break;
+ case DLGK_ITEM_PREV:
+ i = choice - 1;
+ if (choice == 0 && scrollamt == 0)
+ continue;
+ break;
+ case DLGK_ITEM_NEXT:
+ i = choice + 1;
+ if (scrollamt + choice >= item_no - 1)
+ continue;
+ break;
+ default:
+ found = FALSE;
+ break;
+ }
+ }
+ }
+
+ if (found) {
+ if (i != choice) {
+ if (i < 0 || i >= max_choice) {
+ if (i < 0) {
+ scrollamt += i;
+ choice = 0;
+ } else {
+ choice = max_choice - 1;
+ scrollamt += (i - max_choice + 1);
+ }
+ print_list(&all, choice, scrollamt, max_choice);
+ } else {
+ choice = i;
+ print_list(&all, choice, scrollamt, max_choice);
+ }
+ }
+ continue; /* wait for another key press */
+ }
+
+ if (fkey) {
+ switch (key) {
+ case DLGK_ENTER:
+ result = dlg_enter_buttoncode(button);
+ break;
+ case DLGK_LEAVE:
+ result = dlg_ok_buttoncode(button);
+ break;
+ case DLGK_FIELD_PREV:
+ button = dlg_prev_button(buttons, button);
+ dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
+ FALSE, width);
+ break;
+ case DLGK_FIELD_NEXT:
+ button = dlg_next_button(buttons, button);
+ dlg_draw_buttons(dialog, height - 2, 0, buttons, button,
+ FALSE, width);
+ break;
+#ifdef KEY_RESIZE
+ case KEY_RESIZE:
+ dlg_will_resize(dialog);
+ /* reset data */
+ height = old_height;
+ width = old_width;
+ /* repaint */
+ _dlg_resize_cleanup(dialog);
+ goto retry;
+#endif
+ default:
+ if (was_mouse) {
+ if ((key2 = dlg_ok_buttoncode(key)) >= 0) {
+ result = key2;
+ break;
+ }
+ beep();
+ }
+ }
+ } else if (key > 0) {
+ beep();
+ }
+ }
+
+ dlg_del_window(dialog);
+ dlg_mouse_free_regions();
+ free(prompt);
+ *current_item = (scrollamt + choice);
+ return result;
+}
+
+/*
+ * Display a set of items as a tree.
+ */
+int
+dialog_treeview(const char *title,
+ const char *cprompt,
+ int height,
+ int width,
+ int list_height,
+ int item_no,
+ char **items,
+ int flag)
+{
+ int result;
+ int i, j;
+ DIALOG_LISTITEM *listitems;
+ int *depths;
+ bool show_status = FALSE;
+ int current = 0;
+ char *help_result;
+
+ DLG_TRACE(("# treeview args:\n"));
+ DLG_TRACE2S("title", title);
+ DLG_TRACE2S("message", cprompt);
+ DLG_TRACE2N("height", height);
+ DLG_TRACE2N("width", width);
+ DLG_TRACE2N("lheight", list_height);
+ DLG_TRACE2N("llength", item_no);
+ /* FIXME dump the items[][] too */
+ DLG_TRACE2N("flag", flag);
+
+ listitems = dlg_calloc(DIALOG_LISTITEM, (size_t) item_no + 1);
+ assert_ptr(listitems, "dialog_treeview");
+
+ depths = dlg_calloc(int, (size_t) item_no + 1);
+ assert_ptr(depths, "dialog_treeview");
+
+ for (i = j = 0; i < item_no; ++i) {
+ listitems[i].name = items[j++];
+ listitems[i].text = (dialog_vars.no_items
+ ? dlg_strempty()
+ : items[j++]);
+ listitems[i].state = !dlg_strcmp(items[j++], "on");
+ depths[i] = atoi(items[j++]);
+ listitems[i].help = ((dialog_vars.item_help)
+ ? items[j++]
+ : dlg_strempty());
+ }
+ dlg_align_columns(&listitems[0].text, (int) sizeof(DIALOG_LISTITEM), item_no);
+
+ result = dlg_treeview(title,
+ cprompt,
+ height,
+ width,
+ list_height,
+ item_no,
+ listitems,
+ NULL,
+ depths,
+ flag,
+ ¤t);
+
+ switch (result) {
+ case DLG_EXIT_OK: /* FALLTHRU */
+ case DLG_EXIT_EXTRA:
+ show_status = TRUE;
+ break;
+ case DLG_EXIT_HELP:
+ dlg_add_help_listitem(&result, &help_result, &listitems[current]);
+ if ((show_status = dialog_vars.help_status)) {
+ if (dialog_vars.separate_output) {
+ dlg_add_string(help_result);
+ dlg_add_separator();
+ } else {
+ dlg_add_quoted(help_result);
+ }
+ } else {
+ dlg_add_string(help_result);
+ }
+ break;
+ }
+
+ if (show_status) {
+ for (i = 0; i < item_no; i++) {
+ if (listitems[i].state) {
+ if (dlg_need_separator())
+ dlg_add_separator();
+ if (dialog_vars.separate_output) {
+ dlg_add_string(listitems[i].name);
+ } else {
+ if (flag == FLAG_CHECK)
+ dlg_add_quoted(listitems[i].name);
+ else
+ dlg_add_string(listitems[i].name);
+ }
+ }
+ }
+ AddLastKey();
+ }
+
+ dlg_free_columns(&listitems[0].text, (int) sizeof(DIALOG_LISTITEM), item_no);
+ free(depths);
+ free(listitems);
+ return result;
+}
Radix cross Linux
The main Radix cross Linux repository contains the build scripts of packages, which have the most complete and common functionality for desktop machines
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