misc. add sigtstp method.

lib/program.js

@@ -2145,6 +2145,7 @@ Program.prototype.showCursor = function() {
 Program.prototype.alternate =
 Program.prototype.smcup =
 Program.prototype.alternateBuffer = function() {
+  this.isAlt = true;
   if (this.tput) return this.put.smcup();
   if (this.term('vt') || this.term('linux')) return;
   //return this.setMode('?47');
@@ -2259,6 +2260,7 @@ Program.prototype.hideCursor = function() {
 
 Program.prototype.rmcup =
 Program.prototype.normalBuffer = function() {
+  this.isAlt = false;
   //return this.resetMode('?47');
   //return this.resetMode('?1047');
   if (this.tput) return this.put.rmcup();
@@ -3071,6 +3073,39 @@ Program.prototype.out = function(name) {
   return this._odata;
 };
 
+Program.prototype.sigtstp = function(callback) {
+  var self = this
+    , isAlt = this.isAlt
+    , currentMouse = this._currentMouse
+    , cursorHidden = this.cursorHidden;
+
+  var write = this.output.write;
+  this.output.write = function() {};
+
+  process.once('SIGCONT', function() {
+    self.input.setRawMode(true);
+    self.input.resume();
+    self.output.write = write;
+
+    if (isAlt) self.alternateBuffer();
+    if (cursorHidden) self.hideCursor();
+    if (currentMouse) self.enableMouse();
+
+    self.cup(self.y, self.x);
+
+    if (callback) callback();
+  });
+
+  if (currentMouse) this.disableMouse();
+  if (cursorHidden) this.showCursor();
+  if (isAlt) this.normalBuffer();
+
+  this.input.setRawMode(false);
+  this.input.pause();
+
+  process.kill(process.pid, 'SIGTSTP');
+};
+
 /**
  * Expose
  */

lib/tput.js

@@ -2147,7 +2147,7 @@ Tput.strings = [
 
 // DEC Special Character and Line Drawing Set.
 // Taken from tty.js.
-Tput.acsc = { // (0
+Tput.acsc = {    // (0
   '`': '\u25c6', // '◆'
   'a': '\u2592', // '▒'
   'b': '\u0009', // '\t'
@@ -2181,10 +2181,6 @@ Tput.acsc = { // (0
   '~': '\u00b7'  // '·'
 };
 
-// ['b', 'c', 'd', 'e', 'h', 'i'].forEach(function(ch) {
-//   delete Tput.acsc[ch];
-// });
-
 /**
  * Expose
  */

lib/widget.js

@@ -929,30 +929,23 @@ Screen.prototype.spawn = function(file, args, options) {
   screen.program.normalBuffer();
   screen.program.showCursor();
 
-  var _listenedMouse = screen._listenedMouse;
-  if (_listenedMouse) {
+  var listenedMouse = screen._listenedMouse;
+  if (listenedMouse) {
     screen.program.disableMouse();
   }
 
-  var write = process.stdout.write;
-  process.stdout.write = function() {};
-
-  try {
-    process.stdin.pause();
-  } catch (e) {
-    ;
-  }
+  var write = screen.program.output.write;
+  screen.program.output.write = function() {};
+  screen.program.input.pause();
+  screen.program.input.setRawMode(false);
 
   var resume = function() {
     if (resume.done) return;
     resume.done = true;
 
-    try {
-      process.stdin.resume();
-    } catch (e) {
-      ;
-    }
-    process.stdout.write = write;
+    screen.program.input.setRawMode(true);
+    screen.program.input.resume();
+    screen.program.output.write = write;
 
     screen.program.alternateBuffer();
     // Restoring the cursor, or resetting to program.x/y - either works.
@@ -960,7 +953,7 @@ Screen.prototype.spawn = function(file, args, options) {
     // screen.program.cup(screen.program.y, screen.program.x);
     screen.program.restoreCursor();
     screen.program.hideCursor();
-    if (_listenedMouse) {
+    if (listenedMouse) {
       screen.program.enableMouse();
     }
 
@@ -1086,6 +1079,15 @@ Screen.prototype.setEffects = function(el, fel, over, out, effects, temp) {
   });
 };
 
+Screen.prototype.sigtstp = function(callback) {
+  var self = this;
+  this.program.sigtstp(function() {
+    self.alloc();
+    self.render();
+    if (callback) callback();
+  });
+};
+
 /**
  * Element
  */

test/widget.js

@@ -248,6 +248,10 @@ screen.on('keypress', function(ch, key) {
   }
 });
 
+screen.key('C-z', function() {
+  screen.sigtstp();
+});
+
 list.focus();
 
 //screen.on('element click', function(el) {