finally hook up undo

1 files changed, 22 insertions, 1 deletions

diff --git a/js/matrix.js b/js/matrix.js
index 5c56bd4..6994327 100644
--- a/js/matrix.js
+++ b/js/matrix.js
@@ -4,6 +4,8 @@ function Matrix (w,h,f){
   this.w = w
   this.h = h
   this.f = f
+  this.focus_x = 0
+  this.focus_y = 0
   this.initialize()
 }
 Matrix.prototype.initialize = function(f){
@@ -23,6 +25,7 @@ Matrix.prototype.rebuild = function (){
   this.append()
   this.bind()
   this.generate && this.generate()
+  this.focus_clamp()
   check_if_lost_focus()
 }
 Matrix.prototype.clone = function () {
@@ -70,6 +73,24 @@ Matrix.prototype.forEach = function(f){
     })
   })
 }
+Matrix.prototype.focus_clamp = function(){
+  this.focus_x = clamp(this.focus_x, 0, this.w - 1)
+  this.focus_y = clamp(this.focus_y, 0, this.h - 1)
+}
+Matrix.prototype.focus_add = function(x, y){
+  this.focus(this.focus_x + x, this.focus_y + y)
+}
+Matrix.prototype.focus = function(x, y){
+  if (x === undefined) x = this.focus_x
+  if (y === undefined) y = this.focus_y
+  x = mod(x, this.w)
+  y = mod(y, this.h)
+  this.focus_x = x
+  this.focus_y = y
+   
+  //focused_input = this
+  this.aa[y][x].focus()
+}
 Matrix.prototype.focusLex = function(y,x){
   if (x < 0) {
     y -= 1
@@ -181,7 +202,7 @@ Matrix.prototype.resize = function(w,h){
   this.w = w
   this.h = h
   this.bind && this.bind()
-
+  this.focus_clamp()
   if (this.rapper && this.rapper.parentNode != document.body) {
     this.resize_rapper()
   }