perf ui: Reimplement the popup windows using libslang

Just another step in stopping the use of libnewt in perf.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-vtxnmz1t1807ykprapnk9njl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

6 files changed, 77 insertions, 67 deletions

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index bc8f4773d4d..119e996035c 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -310,9 +310,12 @@ fallback:
                 }
                 err = -ENOENT;
                 dso->annotate_warned = 1;
-                pr_err("Can't annotate %s: No vmlinux file%s was found in the "
-                       "path.\nPlease use 'perf buildid-cache -av vmlinux' or "
-                       "--vmlinux vmlinux.\n",
+                pr_err("Can't annotate %s:\n\n"
+                       "No vmlinux file%s\nwas found in the path.\n\n"
+                       "Please use:\n\n"
+                       "  perf buildid-cache -av vmlinux\n\n"
+                       "or:\n\n"
+                       "  --vmlinux vmlinux",
                        sym->name, build_id_msg ?: "");
                 goto out_free_filename;
         }
diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
index 510adaccba8..9c59b9551ad 100644
--- a/tools/perf/util/debug.h
+++ b/tools/perf/util/debug.h
@@ -29,5 +29,6 @@ int ui_helpline__show_help(const char *format, va_list ap);
 
 void ui__warning(const char *format, ...) __attribute__((format(printf, 1, 2)));
 void ui__warning_paranoid(void);
+void ui__error(const char *format, ...) __attribute__((format(printf, 1, 2)));
 
 #endif  /* __PERF_DEBUG_H */
diff --git a/tools/perf/util/ui/browsers/annotate.c b/tools/perf/util/ui/browsers/annotate.c
index 4e0cb7fea7d..0575905d120 100644
--- a/tools/perf/util/ui/browsers/annotate.c
+++ b/tools/perf/util/ui/browsers/annotate.c
@@ -1,6 +1,9 @@
+#include "../../util.h"
 #include "../browser.h"
 #include "../helpline.h"
 #include "../libslang.h"
+#include "../ui.h"
+#include "../util.h"
 #include "../../annotate.h"
 #include "../../hist.h"
 #include "../../sort.h"
@@ -8,15 +11,6 @@
 #include <pthread.h>
 #include <newt.h>
 
-static void ui__error_window(const char *fmt, ...)
-{
-        va_list ap;
-
-        va_start(ap, fmt);
-        newtWinMessagev((char *)"Error", (char *)"Ok", (char *)fmt, ap);
-        va_end(ap);
-}
-
 struct annotate_browser {
         struct ui_browser b;
         struct rb_root    entries;
@@ -400,7 +394,7 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
                 return -1;
 
         if (symbol__annotate(sym, map, sizeof(struct objdump_line_rb_node)) < 0) {
-                ui__error_window(ui_helpline__last_msg);
+                ui__error("%s", ui_helpline__last_msg);
                 return -1;
         }
 
diff --git a/tools/perf/util/ui/setup.c b/tools/perf/util/ui/setup.c
index c4e025fbd6b..85a69faa09a 100644
--- a/tools/perf/util/ui/setup.c
+++ b/tools/perf/util/ui/setup.c
@@ -146,10 +146,10 @@ void setup_browser(bool fallback_to_pager)
 void exit_browser(bool wait_for_ok)
 {
         if (use_browser > 0) {
-                if (wait_for_ok) {
-                        char title[] = "Fatal Error", ok[] = "Ok";
-                        newtWinMessage(title, ok, ui_helpline__last_msg);
-                }
+                if (wait_for_ok)
+                        ui__question_window("Fatal Error",
+                                            ui_helpline__last_msg,
+                                            "Press any key...", 0);
                 ui__exit();
         }
 }
diff --git a/tools/perf/util/ui/util.c b/tools/perf/util/ui/util.c
index 37e6fe081a5..ef9b79332fe 100644
--- a/tools/perf/util/ui/util.c
+++ b/tools/perf/util/ui/util.c
@@ -1,6 +1,5 @@
-#include <newt.h>
+#include "../util.h"
 #include <signal.h>
-#include <stdio.h>
 #include <stdbool.h>
 #include <string.h>
 #include <sys/ttydefaults.h>
@@ -12,6 +11,7 @@
 #include "helpline.h"
 #include "ui.h"
 #include "util.h"
+#include "libslang.h"
 
 static void ui_browser__argv_write(struct ui_browser *browser,
                                    void *entry, int row)
@@ -56,23 +56,6 @@ static int popup_menu__run(struct ui_browser *menu)
         return key;
 }
 
-static void newt_form__set_exit_keys(newtComponent self)
-{
-        newtFormAddHotKey(self, NEWT_KEY_LEFT);
-        newtFormAddHotKey(self, NEWT_KEY_ESCAPE);
-        newtFormAddHotKey(self, 'Q');
-        newtFormAddHotKey(self, 'q');
-        newtFormAddHotKey(self, CTRL('c'));
-}
-
-static newtComponent newt_form__new(void)
-{
-        newtComponent self = newtForm(NULL, NULL, 0);
-        if (self)
-                newt_form__set_exit_keys(self);
-        return self;
-}
-
 int ui__popup_menu(int argc, char * const argv[])
 {
         struct ui_browser menu = {
@@ -86,17 +69,13 @@ int ui__popup_menu(int argc, char * const argv[])
         return popup_menu__run(&menu);
 }
 
-int ui__help_window(const char *text)
+int ui__question_window(const char *title, const char *text,
+                        const char *exit_msg, int delay_secs)
 {
-        struct newtExitStruct es;
-        newtComponent tb, form = newt_form__new();
-        int rc = -1;
+        int x, y;
         int max_len = 0, nr_lines = 0;
         const char *t;
 
-        if (form == NULL)
-                return -1;
-
         t = text;
         while (1) {
                 const char *sep = strchr(t, '\n');
@@ -113,28 +92,56 @@ int ui__help_window(const char *text)
                 t = sep + 1;
         }
 
-        tb = newtTextbox(0, 0, max_len, nr_lines, 0);
-        if (tb == NULL)
-                goto out_destroy_form;
-
-        newtTextboxSetText(tb, text);
-        newtFormAddComponent(form, tb);
-        newtCenteredWindow(max_len, nr_lines, NULL);
-        newtFormRun(form, &es);
-        newtPopWindow();
-        rc = 0;
-out_destroy_form:
-        newtFormDestroy(form);
-        return rc;
+        max_len += 2;
+        nr_lines += 4;
+        y = SLtt_Screen_Rows / 2 - nr_lines / 2,
+        x = SLtt_Screen_Cols / 2 - max_len / 2;
+
+        SLsmg_set_color(0);
+        SLsmg_draw_box(y, x++, nr_lines, max_len);
+        if (title) {
+                SLsmg_gotorc(y, x + 1);
+                SLsmg_write_string((char *)title);
+        }
+        SLsmg_gotorc(++y, x);
+        nr_lines -= 2;
+        max_len -= 2;
+        SLsmg_write_wrapped_string((unsigned char *)text, y, x,
+                                   nr_lines, max_len, 1);
+        SLsmg_gotorc(y + nr_lines - 2, x);
+        SLsmg_write_nstring((char *)" ", max_len);
+        SLsmg_gotorc(y + nr_lines - 1, x);
+        SLsmg_write_nstring((char *)exit_msg, max_len);
+        SLsmg_refresh();
+        return ui__getch(delay_secs);
 }
 
-static const char yes[] = "Yes", no[] = "No",
-                  warning_str[] = "Warning!", ok[] = "Ok";
+int ui__help_window(const char *text)
+{
+        return ui__question_window("Help", text, "Press any key...", 0);
+}
 
 bool ui__dialog_yesno(const char *msg)
 {
-        /* newtWinChoice should really be accepting const char pointers... */
-        return newtWinChoice(NULL, (char *)yes, (char *)no, (char *)msg) == 1;
+        int answer = ui__question_window(NULL, msg, "Enter: Yes, ESC: No", 0);
+
+        return answer == K_ENTER;
+}
+
+static void __ui__warning(const char *title, const char *format, va_list args)
+{
+        char *s;
+
+        if (use_browser > 0 && vasprintf(&s, format, args) > 0) {
+                pthread_mutex_lock(&ui__lock);
+                ui__question_window(title, s, "Press any key...", 0);
+                pthread_mutex_unlock(&ui__lock);
+                free(s);
+                return;
+        }
+
+        fprintf(stderr, "%s:\n", title);
+        vfprintf(stderr, format, args);
 }
 
 void ui__warning(const char *format, ...)
@@ -142,12 +149,15 @@ void ui__warning(const char *format, ...)
         va_list args;
 
         va_start(args, format);
-        if (use_browser > 0) {
-                pthread_mutex_lock(&ui__lock);
-                newtWinMessagev((char *)warning_str, (char *)ok,
-                                (char *)format, args);
-                pthread_mutex_unlock(&ui__lock);
-        } else
-                vfprintf(stderr, format, args);
+        __ui__warning("Warning", format, args);
+        va_end(args);
+}
+
+void ui__error(const char *format, ...)
+{
+        va_list args;
+
+        va_start(args, format);
+        __ui__warning("Error", format, args);
         va_end(args);
 }
diff --git a/tools/perf/util/ui/util.h b/tools/perf/util/ui/util.h
index e53c3d33490..9a25538d473 100644
--- a/tools/perf/util/ui/util.h
+++ b/tools/perf/util/ui/util.h
@@ -7,5 +7,7 @@ int ui__getch(int delay_secs);
 int ui__popup_menu(int argc, char * const argv[]);
 int ui__help_window(const char *text);
 bool ui__dialog_yesno(const char *msg);
+int ui__question_window(const char *title, const char *text,
+                        const char *exit_msg, int delay_secs);
 
 #endif /* _PERF_UI_UTIL_H_ */