numerous improvements.

lib/widget.js

@@ -27,6 +27,7 @@ function Node(options) {
     || (function(){throw new Error('No active screen.')})();
   this.parent = options.parent || null; // this.screen;
   this.children = [];
+  this.$ = this._ = this.data = {};
 
   (options.children || []).forEach(this.append.bind(this));
 
@@ -194,7 +195,7 @@ Screen.prototype._listenMouse = function(el) {
 
     for (; i < self.clickable.length; i++) {
       el = self.clickable[i];
-      if (el.hidden) continue;
+      if (!el.visible) continue;
 
       // Get the true coordinates.
       //ret = el.render(true);
@@ -550,18 +551,23 @@ Screen.prototype._reduceColor = function(col) {
 };
 
 Screen.prototype.focus = function(offset) {
-  if (!this.input.length || !offset) return;
+  var shown = this.input.filter(function(el) {
+    return el.visible;
+  });
+  if (!shown || !offset) return;
   var i = this.input.indexOf(this.focused);
   if (!~i) return;
-  if (!this.input[i + offset]) {
   if (offset > 0) {
-      while (offset--) if (++i > this.input.length - 1) i = 0;
-    } else {
-      offset = -offset;
-      while (offset--) if (--i < 0) i = this.input.length - 1;
+    while (offset--) {
+      if (++i > this.input.length - 1) i = 0;
+      if (!this.input[i].visible) offset++;
     }
   } else {
-    i += offset;
+    offset = -offset;
+    while (offset--) {
+      if (--i < 0) i = this.input.length - 1;
+      if (!this.input[i].visible) offset++;
+    }
   }
   return this.input[i].focus();
 };
@@ -727,9 +733,12 @@ Element.prototype.emit = function(type) {
 
 Element.prototype.hide = function() {
   if (this.hidden) return;
-  var ret = this.render(true);
   this.hidden = true;
+  //var ret = this.render(true);
+  var ret = this._lastPos;
+  if (ret) {
     this.screen.clearRegion(ret.xi, ret.xl, ret.yi, ret.yl);
+  }
   this.emit('hide');
 };
 
@@ -756,6 +765,7 @@ Element.prototype.focus = function() {
 Element.prototype.setContent = function(content) {
   var ret = this.render(true);
   // TODO: Maybe simply set _pcontent with _parseTags result.
+  // text = text.replace(/\x1b(?!\[[\d;]*m)/g, '');
   this.content = this._parseTags(content || '');
   this.screen.clearRegion(ret.xi, ret.xl, ret.yi, ret.yl);
 };
@@ -779,6 +789,14 @@ Element.prototype._parseTags = function(text) {
   });
 };
 
+Element.prototype.__defineGetter__('visible', function() {
+  var el = this;
+  do {
+    if (el.hidden) return false;
+  } while (el = el.parent);
+  return true;
+});
+
 /**
  * Positioning
  */
@@ -1500,6 +1518,7 @@ function List(options) {
       self.childBase = 0;
       self.childOffset = self.selected;
     } else {
+      // Is this supposed to be: self.childBase = visible - self.selected + 1; ?
       self.childBase = self.selected - visible + 1;
       self.childOffset = visible - 1;
     }
@@ -1666,7 +1685,12 @@ ScrollableText.prototype.scroll = function(offset) {
     }
 
     max = this._clines.length - 1 - (this.height - (this.border ? 2 : 0));
-    if (cb > max) this.childBase = cb = max;
+    if (max < 0) max = 0;
+
+    if (cb > max) {
+      this.childBase = cb = max;
+      diff = cb - base;
+    }
 
     if (diff > 0) {
       for (i = base; i < cb; i++) this.contentIndex += this._clines[i].length + 1;
@@ -1690,6 +1714,10 @@ ScrollableText.prototype._recalculateIndex = function() {
   this._clines = wrapContent(this.content, this.width - (this.border ? 2 : 0));
   this._pcontent = this._clines.join('\n');
 
+  if (this.childBase > this._clines.length - 1) {
+    this.childBase = this._clines.length - 1;
+  }
+
   for (var i = 0, t = 0; i < this.childBase; i++) {
     t += this._clines[i].length + 1;
   }
@@ -1726,6 +1754,11 @@ Textbox.prototype.__proto__ = Input.prototype;
 Textbox.prototype.setInput = function(callback) {
   var self = this;
 
+  if (this._timeout != null) {
+    clearTimeout(this._timeout);
+    delete this._timeout;
+  }
+
   this.screen.grabKeys = true;
 
   this.focus();
@@ -1740,9 +1773,9 @@ Textbox.prototype.setInput = function(callback) {
     // self.screen.program.restoreCursor();
     self.screen.program.hideCursor();
     // Wait for global keypress event to fire.
-    process.nextTick(function() {
+    self._timeout = setTimeout(function() {
       self.screen.grabKeys = false;
-    });
+    }, 1);
     return err
       ? callback(err)
       : callback(null, value);

test/widget.js

@@ -139,8 +139,6 @@ var stext = new blessed.ScrollableText({
   content: lorem,
   fg: 'blue',
   bg: 'default',
-  barBg: 'default',
-  barFg: 'blue',
   border: {
     type: 'ascii',
     fg: 'default',