fix focus error. fix table setData error. fixes #160.

lib/widgets/listtable.js

@@ -65,6 +65,10 @@ function ListTable(options) {
 
   this.setData(options.rows || options.data);
 
+  this.on('attach', function() {
+    self.setData(self.rows);
+  });
+
   this.on('resize', function() {
     var selected = self.selected;
     self.setData(self.rows);
@@ -84,7 +88,9 @@ ListTable.prototype.setData = function(rows) {
   var self = this
     , align = this.__align;
 
-  this.clearPos();
+  if (this.visible && this.lpos) {
+    this.clearPos();
+  }
 
   this.clearItems();
 
@@ -92,6 +98,8 @@ ListTable.prototype.setData = function(rows) {
 
   this._calculateMaxes();
 
+  if (!this._maxes) return;
+
   this.addItem('');
 
   this.rows.forEach(function(row, i) {

lib/widgets/screen.js

@@ -1623,6 +1623,8 @@ Screen.prototype._focus = function(self, old) {
     if (el.scrollable) break;
   }
 
+  if (el && el.detached) return;
+
   // If we're in a scrollable element,
   // automatically scroll to the focused element.
   if (el) {

lib/widgets/table.js

@@ -44,6 +44,11 @@ function Table(options) {
 
   this.setData(options.rows || options.data);
 
+  this.on('attach', function() {
+    self.setContent('');
+    self.setData(self.rows);
+  });
+
   this.on('resize', function() {
     self.setContent('');
     self.setData(self.rows);
@@ -59,6 +64,10 @@ Table.prototype._calculateMaxes = function() {
   var self = this;
   var maxes = [];
 
+  if (this.detached) return;
+
+  this.rows = this.rows || [];
+
   this.rows.forEach(function(row) {
     row.forEach(function(cell, i) {
       var clen = self.strWidth(cell);
@@ -110,6 +119,8 @@ Table.prototype.setData = function(rows) {
 
   this._calculateMaxes();
 
+  if (!this._maxes) return;
+
   this.rows.forEach(function(row, i) {
     var isHeader = i === 0;
     var isFooter = i === self.rows.length - 1;

test/widget-listtable.js

@@ -30,7 +30,7 @@ var box = blessed.box({
 */
 
 var table = blessed.listtable({
-  parent: screen,
+  //parent: screen,
   top: 'center',
   left: 'center',
   data: null,
@@ -89,6 +89,9 @@ screen.key('q', function() {
 table.focus();
 
 table.setData(data2);
+
+screen.append(table);
+
 screen.render();
 
 setTimeout(function() {

test/widget-table.js

@@ -12,7 +12,7 @@ var DU = '杜';
 var JUAN = '鹃';
 
 var table = blessed.table({
-  parent: screen,
+  //parent: screen,
   top: 'center',
   left: 'center',
   data: null,
@@ -62,6 +62,7 @@ screen.key('q', function() {
 });
 
 table.setData(data2);
+screen.append(table);
 screen.render();
 
 setTimeout(function() {