regedit: Handle term resizes.

Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>

source3/utils/regedit.c

@@ -29,12 +29,19 @@
 #include <menu.h>
 #include <panel.h>
 
+#define KEY_START_X 	0
+#define KEY_START_Y 	3
+#define KEY_WIDTH 	(COLS / 4)
+#define KEY_HEIGHT	(LINES - KEY_START_Y)
+#define VAL_START_X 	KEY_WIDTH
+#define VAL_START_Y 	3
+#define VAL_WIDTH 	(COLS - KEY_WIDTH)
+#define VAL_HEIGHT	(LINES - VAL_START_Y)
+#define HEADING_START_Y	KEY_START_Y - 1
+
 struct regedit {
 	WINDOW *main_window;
-	PANEL *main_panel;
 	WINDOW *path_label;
-	WINDOW *key_label;
-	WINDOW *value_label;
 	struct value_list *vl;
 	struct tree_view *keys;
 	bool tree_input;
@@ -87,18 +94,26 @@ static struct tree_node *load_hives(TALLOC_CTX *mem_ctx,
 	return root;
 }
 
-static void print_heading(WINDOW *win, bool selected, const char *str)
+static void print_heading(struct regedit *regedit)
 {
-	if (selected) {
-		wattron(win, A_REVERSE);
+	move(HEADING_START_Y, 0);
+	clrtoeol();
+
+	if (regedit->tree_input) {
+		attron(A_REVERSE);
 	} else {
-		wattroff(win, A_REVERSE);
+		attroff(A_REVERSE);
 	}
-	wmove(win, 0, 0);
-	wclrtoeol(win);
-	waddstr(win, str);
-	wnoutrefresh(win);
-	wrefresh(win);
+	mvprintw(HEADING_START_Y, KEY_START_X, "Key");
+	attroff(A_REVERSE);
+
+	if (!regedit->tree_input) {
+		attron(A_REVERSE);
+	} else {
+		attroff(A_REVERSE);
+	}
+	mvprintw(HEADING_START_Y, VAL_START_X, "Value");
+	attroff(A_REVERSE);
 }
 
 static void add_reg_key(struct regedit *regedit, struct tree_node *node,
@@ -303,8 +318,6 @@ static void handle_value_input(struct regedit *regedit, int c)
 					      vitem->value_name);
 				value_list_load(regedit->vl, node->key);
 			}
-
-
 		}
 		break;
 	}
@@ -317,10 +330,7 @@ static void handle_main_input(struct regedit *regedit, int c)
 	switch (c) {
 	case '\t':
 		regedit->tree_input = !regedit->tree_input;
-		print_heading(regedit->key_label, regedit->tree_input == true,
-			      "Keys");
-		print_heading(regedit->value_label, regedit->tree_input == false,
-			      "Values");
+		print_heading(regedit);
 		break;
 	default:
 		if (regedit->tree_input) {
@@ -343,47 +353,44 @@ static void display_test_window(TALLOC_CTX *mem_ctx,
 	start_color();
 	cbreak();
 	noecho();
-	keypad(stdscr, TRUE);
 
 	regedit = talloc_zero(mem_ctx, struct regedit);
 	SMB_ASSERT(regedit != NULL);
 
-	regedit->main_window = newwin(25, 80, 0, 0);
-	SMB_ASSERT(regedit->main_window != NULL);
-
+	regedit->main_window = stdscr;
 	keypad(regedit->main_window, TRUE);
 
 	mvwprintw(regedit->main_window, 0, 0, "Path: ");
-	regedit->path_label = derwin(regedit->main_window, 1, 65, 0, 6);
+	regedit->path_label = derwin(regedit->main_window, 1, COLS - 6, 0, 6);
 	wprintw(regedit->path_label, "/");
 
 	root = load_hives(regedit, ctx);
 	SMB_ASSERT(root != NULL);
 
-	regedit->key_label = derwin(regedit->main_window, 1, 10, 2, 0);
-	regedit->value_label = derwin(regedit->main_window, 1, 10, 2, 25);
-
-	print_heading(regedit->key_label, true, "Keys");
-	regedit->keys = tree_view_new(regedit, root, regedit->main_window,
-				      15, 24, 3, 0);
+	regedit->keys = tree_view_new(regedit, root, KEY_HEIGHT, KEY_WIDTH,
+				      KEY_START_Y, KEY_START_X);
 	SMB_ASSERT(regedit->keys != NULL);
 
-	print_heading(regedit->value_label, false, "Values");
-	regedit->vl = value_list_new(regedit, regedit->main_window,
-				     15, 40, 3, 25);
+	regedit->vl = value_list_new(regedit, VAL_HEIGHT, VAL_WIDTH,
+				     VAL_START_Y, VAL_START_X);
 	SMB_ASSERT(regedit->vl != NULL);
 
 	regedit->tree_input = true;
+	print_heading(regedit);
 
 	tree_view_show(regedit->keys);
 	value_list_show(regedit->vl);
 
-	regedit->main_panel = new_panel(regedit->main_window);
-	SMB_ASSERT(regedit->main_panel != NULL);
-
 	update_panels();
 	doupdate();
 	while ((c = wgetch(regedit->main_window)) != 'q') {
+		if (c == KEY_RESIZE) {
+			tree_view_resize(regedit->keys, KEY_HEIGHT, KEY_WIDTH,
+					 KEY_START_Y, KEY_START_X);
+			value_list_resize(regedit->vl, VAL_HEIGHT, VAL_WIDTH,
+					  VAL_START_Y, VAL_START_X);
+			print_heading(regedit);
+		}
 		handle_main_input(regedit, c);
 		update_panels();
 		doupdate();

source3/utils/regedit_dialog.c

@@ -138,10 +138,10 @@ static void center_dialog_above_window(WINDOW *below, int *nlines, int *ncols,
 	}
 
 	if (*nlines < centery) {
-		*y = centery - *nlines;
+		*y = centery - *nlines / 2;
 	}
 	if (*ncols < centerx) {
-		*x = centerx - *ncols;
+		*x = centerx - *ncols / 2;
 	}
 }
 

source3/utils/regedit_treeview.c

@@ -297,6 +297,12 @@ static int tree_view_free(struct tree_view *view)
 	if (view->empty[0]) {
 		free_item(view->empty[0]);
 	}
+	if (view->panel) {
+		del_panel(view->panel);
+	}
+	if (view->window) {
+		delwin(view->window);
+	}
 	tree_view_free_current_items(view->current_items);
 	tree_node_free_recursive(view->root);
 
@@ -304,8 +310,8 @@ static int tree_view_free(struct tree_view *view)
 }
 
 struct tree_view *tree_view_new(TALLOC_CTX *ctx, struct tree_node *root,
-				WINDOW *orig, int nlines, int ncols,
-				int begin_y, int begin_x)
+				int nlines, int ncols, int begin_y,
+				int begin_x)
 {
 	struct tree_view *view;
 	static const char *dummy = "(empty)";
@@ -321,9 +327,12 @@ struct tree_view *tree_view_new(TALLOC_CTX *ctx, struct tree_node *root,
 	if (view->empty[0] == NULL) {
 		goto fail;
 	}
-	view->window = orig;
-	view->sub_window = derwin(orig, nlines, ncols, begin_y, begin_x);
-	if (view->sub_window == NULL) {
+	view->window = newwin(nlines, ncols, begin_y, begin_x);
+	if (view->window == NULL) {
+		goto fail;
+	}
+	view->panel = new_panel(view->window);
+	if (view->panel == NULL) {
 		goto fail;
 	}
 	view->root = root;
@@ -334,7 +343,6 @@ struct tree_view *tree_view_new(TALLOC_CTX *ctx, struct tree_node *root,
 	}
 	set_menu_format(view->menu, nlines, 1);
 	set_menu_win(view->menu, view->window);
-	set_menu_sub(view->menu, view->sub_window);
 	menu_opts_off(view->menu, O_SHOWDESC);
 	set_menu_mark(view->menu, "* ");
 
@@ -348,6 +356,21 @@ fail:
 	return NULL;
 }
 
+void tree_view_resize(struct tree_view *view, int nlines, int ncols,
+			     int begin_y, int begin_x)
+{
+	WINDOW *nwin;
+
+	unpost_menu(view->menu);
+	nwin = newwin(nlines, ncols, begin_y, begin_x);
+	replace_panel(view->panel, nwin);
+	delwin(view->window);
+	view->window = nwin;
+	set_menu_format(view->menu, nlines, 1);
+	set_menu_win(view->menu, view->window);
+	post_menu(view->menu);
+}
+
 static void print_path_recursive(WINDOW *label, struct tree_node *node)
 {
 	if (node->parent)

source3/utils/regedit_treeview.h

@@ -23,6 +23,7 @@
 #include "includes.h"
 #include <ncurses.h>
 #include <menu.h>
+#include <panel.h>
 
 struct registry_key;
 
@@ -42,7 +43,7 @@ struct tree_view {
 
 	struct tree_node *root;
 	WINDOW *window;
-	WINDOW *sub_window;
+	PANEL *panel;
 	MENU *menu;
 	ITEM **current_items;
 	ITEM *empty[2];
@@ -58,7 +59,9 @@ void tree_node_append_last(struct tree_node *list, struct tree_node *node);
 void tree_node_free_recursive(struct tree_node *list);
 void tree_node_print_path(WINDOW *label, struct tree_node *node);
 struct tree_view *tree_view_new(TALLOC_CTX *ctx, struct tree_node *root,
-				WINDOW *orig, int nlines, int ncols,
+				int nlines, int ncols,
+				int begin_y, int begin_x);
+void tree_view_resize(struct tree_view *view, int nlines, int ncols,
 			     int begin_y, int begin_x);
 void tree_view_show(struct tree_view *view);
 void tree_view_clear(struct tree_view *view);

source3/utils/regedit_valuelist.c

@@ -49,13 +49,19 @@ static int value_list_free(struct value_list *vl)
 	if (vl->empty && vl->empty[0]) {
 		free_item(vl->empty[0]);
 	}
+	if (vl->panel) {
+		del_panel(vl->panel);
+	}
+	if (vl->window) {
+		delwin(vl->window);
+	}
 	value_list_free_items(vl->items);
 
 	return 0;
 }
 
-struct value_list *value_list_new(TALLOC_CTX *ctx, WINDOW *orig, int nlines,
-				  int ncols, int begin_y, int begin_x)
+struct value_list *value_list_new(TALLOC_CTX *ctx, int nlines, int ncols,
+				  int begin_y, int begin_x)
 {
 	static const char *empty = "(no values)";
 	static const char *empty_desc = "";
@@ -77,8 +83,14 @@ struct value_list *value_list_new(TALLOC_CTX *ctx, WINDOW *orig, int nlines,
 		goto fail;
 	}
 
-	vl->window = orig;
-	vl->sub_window = derwin(orig, nlines, ncols, begin_y, begin_x);
+	vl->window = newwin(nlines, ncols, begin_y, begin_x);
+	if (vl->window == NULL) {
+		goto fail;
+	}
+	vl->panel = new_panel(vl->window);
+	if (vl->panel == NULL) {
+		goto fail;
+	}
 
 	vl->menu = new_menu(vl->empty);
 	if (vl->menu == NULL) {
@@ -87,7 +99,7 @@ struct value_list *value_list_new(TALLOC_CTX *ctx, WINDOW *orig, int nlines,
 
 	set_menu_format(vl->menu, nlines, 1);
 	set_menu_win(vl->menu, vl->window);
-	set_menu_sub(vl->menu, vl->sub_window);
+
 	menu_opts_on(vl->menu, O_SHOWDESC);
 	set_menu_mark(vl->menu, "* ");
 
@@ -99,6 +111,21 @@ fail:
 	return NULL;
 }
 
+void value_list_resize(struct value_list *vl, int nlines, int ncols,
+		       int begin_y, int begin_x)
+{
+	WINDOW *nwin;
+
+	unpost_menu(vl->menu);
+	nwin = newwin(nlines, ncols, begin_y, begin_x);
+	replace_panel(vl->panel, nwin);
+	delwin(vl->window);
+	vl->window = nwin;
+	set_menu_format(vl->menu, nlines, 1);
+	set_menu_win(vl->menu, vl->window);
+	post_menu(vl->menu);
+}
+
 static uint32_t get_num_values(TALLOC_CTX *ctx, const struct registry_key *key)
 {
 	const char *classname;

source3/utils/regedit_valuelist.h

@@ -23,6 +23,7 @@
 #include "includes.h"
 #include <ncurses.h>
 #include <menu.h>
+#include <panel.h>
 
 struct registry_key;
 
@@ -35,15 +36,17 @@ struct value_item {
 
 struct value_list {
 	WINDOW *window;
-	WINDOW *sub_window;
+	PANEL *panel;
 	MENU *menu;
 	ITEM **items;
 	ITEM **empty;
 }
 ;
-struct value_list *value_list_new(TALLOC_CTX *ctx, WINDOW *orig, int nlines,
-				  int ncols, int begin_y, int begin_x);
+struct value_list *value_list_new(TALLOC_CTX *ctx, int nlines, int ncols,
+				  int begin_y, int begin_x);
 void value_list_show(struct value_list *vl);
 WERROR value_list_load(struct value_list *vl, struct registry_key *key);
+void value_list_resize(struct value_list *vl, int nlines, int ncols,
+		       int begin_y, int begin_x);
 
 #endif