automatically use alternate buffer etc.

lib/widget.js

@@ -142,6 +142,10 @@ function Screen(options) {
     bottom: this.bottom = 0
   };
 
+  this.focused = null;
+  this.clickable = [];
+  this.input = [];
+
   this.alloc();
 
   this.program.on('resize', function() {
@@ -150,9 +154,14 @@ function Screen(options) {
     self.emit('resize');
   });
 
-  this.focused = null;
-  this.clickable = [];
-  this.input = [];
+  this.program.alternateBuffer();
+  this.program.hideCursor();
+
+  process.on('exit', function() {
+    self.program.clear();
+    self.program.showCursor();
+    self.program.normalBuffer();
+  });
 }
 
 Screen._default = null;
@@ -282,7 +291,6 @@ Screen.prototype.draw = function(start, end) {
     , o;
 
   this.program.saveCursor();
-  //this.program.write('\x1b[1;1H');
 
   for (y = start; y <= end; y++) {
     line = this.lines[y];
@@ -1190,7 +1198,7 @@ ScrollableText.prototype.scroll = function(offset) {
   // and put it in a scrollable text box.
   if (this.content != null) {
     var cb = this.childBase
-      , data = this.render(true)
+      , data = this.render(true) || 0
       , xi = data.xi
       , xl = data.xl
       , xxl = xl - (this.border ? 1 : 0)
@@ -1199,6 +1207,9 @@ ScrollableText.prototype.scroll = function(offset) {
       , xxxi
       , cci;
 
+    // XXX Temporary workaround for .render() not working while hidden.
+    if (!data) return ret;
+
     if (this.contentIndex != null) {
       ci = this.contentIndex;
       cb = diff;

test/widget.js

@@ -1,11 +1,7 @@
 var blessed = require('blessed')
-  , program = blessed()
-  , screen;
+  , program = blessed();
 
-program.alternateBuffer();
-program.hideCursor();
-
-screen = new blessed.Screen({
+var screen = new blessed.Screen({
   program: program
 });
 
@@ -186,10 +182,6 @@ program.on('keypress', function(ch, key) {
       : screen.focusNext();
   }
   if (key.name === 'escape' || key.name === 'q') {
-    program.disableMouse();
-    program.clear();
-    program.showCursor();
-    program.normalBuffer();
     return process.exit(0);
   }
 });
@@ -199,8 +191,8 @@ list.focus();
 screen.render();
 
 setInterval(function() {
-  //stext.toggle();
-  //screen.render();
+  stext.toggle();
+  screen.render();
 }, 1000);
 
 (function fill() {