From 933b5442bda0a44678522fa31b169a25c0cb4ceb Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Fri, 12 Jul 2013 03:52:14 -0500
Subject: [PATCH] insert, set, get, delete, clear lines.

---
 lib/widget.js | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/lib/widget.js b/lib/widget.js
index 26a0a7d..3c93491 100644
--- a/lib/widget.js
+++ b/lib/widget.js
@@ -1834,6 +1834,8 @@ outer:
 //   box.insertTop('foobar');
 // Things will break because we're using _lastPos instead of render(true).
 // Maybe _lastPos could be updated on .left, .right, etc setters?
+
+// OLD
 Box.prototype.insertTop = function(line) {
   if (this._lastPos && this._lastPos.xi === 0 && this._lastPos.xl === this.screen.width) {
     this.screen.insertTop(this._lastPos.yi, this._lastPos.yl - 1);
@@ -1870,6 +1872,81 @@ Box.prototype.deleteBottom = function() {
   this.setContent(this._clines.join('\n'), reset);
 };
 
+// NEW
+
+Box.prototype.insertLine = function(i, line) {
+  //if (typeof line === 'string') line = [line];
+  if (this._lastPos && this._lastPos.xi === 0 && this._lastPos.xl === this.screen.width) {
+    i = Math.max(i, 0);
+    i = Math.min(i, this._lastPos.yl - this._lastPos.yi - (this.border ? 2 : 0));
+    //this.screen.insertLine(line.length
+    this.screen.insertLine(1,
+      this._lastPos.yi + (this.border ? 1 : 0) + i,
+      this._lastPos.yi,
+      this._lastPos.yl - 1);
+  }
+  this._clines.splice((this.childBase || 0) + (this.border ? 1 : 0) + i, 0, line);
+  // OR:
+  //line.forEach(function(line, j) {
+  //  this._clines.splice((this.childBase || 0) + (this.border ? 1 : 0) + i + j, 0, line);
+  //}, this);
+  this.setContent(this._clines.join('\n'), true);
+};
+
+Box.prototype.deleteLine = function(i) {
+  //if (typeof line === 'string') line = [line];
+  var reset = true;
+  if (this._lastPos && this._lastPos.xi === 0 && this._lastPos.xl === this.screen.width) {
+    i = Math.max(i, 0);
+    i = Math.min(i, this._lastPos.yl - this._lastPos.yi - (this.border ? 2 : 0));
+    //this.screen.deleteLine(line.length,
+    this.screen.deleteLine(1,
+      this._lastPos.yi + (this.border ? 1 : 0) + i,
+      this._lastPos.yi,
+      this._lastPos.yl - 1);
+    reset = false;
+  }
+  this._clines.splice((this.childBase || 0) + (this.border ? 1 : 0) + i, 1);
+  // OR:
+  //line.forEach(function(line, j) {
+  //  this._clines.splice((this.childBase || 0) + (this.border ? 1 : 0) + i + j, 1);
+  //}, this);
+  this.setContent(this._clines.join('\n'), reset);
+};
+
+Box.prototype.insertTop = function(line) {
+  return this.insertLine(0, line);
+};
+
+Box.prototype.insertBottom = function(line) {
+  return this.insertLine(this.height - (this.border ? 2 : 0), line);
+};
+
+Box.prototype.deleteTop = function() {
+  return this.deleteLine(0);
+};
+
+Box.prototype.deleteBottom = function() {
+  return this.deleteLine(this.height - (this.border ? 2 : 0));
+};
+
+Box.prototype.setLine = function(i, line) {
+  i = Math.max(i, 0);
+  i = Math.min(i, this._lastPos.yl - this._lastPos.yi - (this.border ? 2 : 0));
+  this._clines[(this.childBase || 0) + (this.border ? 1 : 0) + i] = line;
+  return this.setContent(this._clines.join('\n'), true);
+};
+
+Box.prototype.getLine = function(i) {
+  i = Math.max(i, 0);
+  i = Math.min(i, this._lastPos.yl - this._lastPos.yi - (this.border ? 2 : 0));
+  return this._clines[(this.childBase || 0) + (this.border ? 1 : 0) + i];
+};
+
+Box.prototype.clearLine = function(i) {
+  return this.setLine(i, '');
+};
+
 /**
  * Text
  */