Confirm quit action with a cancellable dialog.

Makefile.am

@@ -13,6 +13,7 @@ ncdu_SOURCES=\
 	src/exclude.c\
 	src/help.c\
 	src/shell.c\
+	src/quit.c\
 	src/main.c\
 	src/path.c\
 	src/util.c
@@ -28,6 +29,7 @@ noinst_HEADERS=\
 	src/global.h\
 	src/help.h\
 	src/shell.h\
+	src/quit.h\
 	src/path.h\
 	src/util.h
 

src/browser.c

@@ -397,7 +397,7 @@ int browse_key(int ch) {
       if(info_show)
         info_show = 0;
       else
-        return 1;
+        quit_init();
       break;
     case 'g':
       if(++graph > 3)

src/global.h

@@ -56,6 +56,7 @@
 #define ST_DEL    2
 #define ST_HELP   3
 #define ST_SHELL  4
+#define ST_QUIT   5
 
 
 /* structure representing a file or directory */
@@ -104,5 +105,6 @@ int input_handle(int);
 #include "path.h"
 #include "util.h"
 #include "shell.h"
+#include "quit.h"
 
 #endif

src/main.c

@@ -54,6 +54,7 @@ static void screen_draw() {
     case ST_HELP:   help_draw();   break;
     case ST_SHELL:  shell_draw();  break;
     case ST_DEL:    delete_draw(); break;
+    case ST_QUIT:   quit_draw();   break;
   }
 }
 
@@ -97,6 +98,7 @@ int input_handle(int wait) {
       case ST_BROWSE: return browse_key(ch);
       case ST_HELP:   return help_key(ch);
       case ST_DEL:    return delete_key(ch);
+      case ST_QUIT:   return quit_key(ch);
     }
     screen_draw();
   }

src/quit.c

+/* ncdu - NCurses Disk Usage
+
+  Copyright (c) 2015 Yoran Heling
+
+  Permission is hereby granted, free of charge, to any person obtaining
+  a copy of this software and associated documentation files (the
+  "Software"), to deal in the Software without restriction, including
+  without limitation the rights to use, copy, modify, merge, publish,
+  distribute, sublicense, and/or sell copies of the Software, and to
+  permit persons to whom the Software is furnished to do so, subject to
+  the following conditions:
+
+  The above copyright notice and this permission notice shall be included
+  in all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+#include "global.h"
+
+#include <ncurses.h>
+
+/* extern? */ int page, start;
+
+int quit_key(int ch) {
+  switch(ch) {
+  case 'y':
+  case 'Y':
+    return 1;
+    break;
+  default:
+    pstate = ST_BROWSE;
+  }
+  return 0;
+}
+
+void quit_draw() {
+  browse_draw();
+
+  nccreate(4,30, "ncdu confirm quit");
+  ncaddstr(2,2, "Really quit? (y/N)");
+}
+
+void quit_init() {
+  page = 1;
+  start = 0;
+  pstate = ST_QUIT;
+}

src/quit.h

+/* ncdu - NCurses Disk Usage
+
+  Copyright (c) 2015 Yoran Heling
+
+  Permission is hereby granted, free of charge, to any person obtaining
+  a copy of this software and associated documentation files (the
+  "Software"), to deal in the Software without restriction, including
+  without limitation the rights to use, copy, modify, merge, publish,
+  distribute, sublicense, and/or sell copies of the Software, and to
+  permit persons to whom the Software is furnished to do so, subject to
+  the following conditions:
+
+  The above copyright notice and this permission notice shall be included
+  in all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+#ifndef _quit_h
+#define _quit_h
+
+#include "global.h"
+
+int  quit_key(int);
+void quit_draw(void);
+void quit_init(void);
+
+
+#endif
+