From 3a8c1a190774a9633eca452be49448f006b2cc53 Mon Sep 17 00:00:00 2001
From: Robert Konigsberg <konigsberg@gmail.com>
Date: Mon, 31 Dec 2012 12:10:03 -0500
Subject: [PATCH] The "to hash" textbox now accepts changes in the palette.

---
 experimental/palette/multi-palette.js | 91 ++++++++++++++++++++---------------
 experimental/palette/palette.js       |  3 ++
 2 files changed, 55 insertions(+), 39 deletions(-)

diff --git a/experimental/palette/multi-palette.js b/experimental/palette/multi-palette.js
index 2307030..ee01a4c 100644
--- a/experimental/palette/multi-palette.js
+++ b/experimental/palette/multi-palette.js
@@ -130,49 +130,62 @@ MultiPalette.prototype.activate = function(key) {
 MultiPalette.prototype.showHash = function() {
   var hash = this.read();
   var textarea = new TextArea();
-  textarea.cancel.style.display = "none";
-
-  /*
-   * JSON.stringify isn't built to be nice to functions. The following fixes
-   * this.
-   *
-   * First, val.toString only does part of the work, turning it into
-   * "function () {\n  alert(\"p-click!\");\n}",
-   *
-   * {start,end}Marker make the surrounding quotes easy to find, and then
-   * remove them. It also converts the instances of \n and \" so the
-   * result looks like:
-   * function () {
-   *   alert("p-click!");
-   * }",
-   */
-  var startMarker = "<~%!<";
-  var endMarker = ">!%~>";
-  var replacer = function(key, val) {
-    if (typeof val === 'function') {
-      return startMarker + val.toString() + endMarker;
-    }
-    return val;
-  }
-  var text = JSON.stringify(hash, replacer, 2);
-  while(true) {
-    var start = text.indexOf(startMarker);
-    var end = text.indexOf(endMarker); 
-    if (start == -1) {
-      break;
-    }
-    var substring = text.substring(start + startMarker.length, end);
-    while(substring.indexOf("\\n") >= 0) {
-      substring = substring.replace("\\n", "\n");
+
+  var hashToString = function(hash) {
+    /*
+     * JSON.stringify isn't built to be nice to functions. The following fixes
+     * this.
+     *
+     * First, val.toString only does part of the work, turning it into
+     * "function () {\n  alert(\"p-click!\");\n}",
+     *
+     * {start,end}Marker make the surrounding quotes easy to find, and then
+     * remove them. It also converts the instances of \n and \" so the
+     * result looks like:
+     * function () {
+     *   alert("p-click!");
+     * }",
+     */
+    var startMarker = "<~%!<";
+    var endMarker = ">!%~>";
+    var replacer = function(key, val) {
+      if (typeof val === 'function') {
+        return startMarker + val.toString() + endMarker;
+      }
+      return val;
     }
-    while(substring.indexOf("\\\"") >= 0) {
-      substring = substring.replace("\\\"", "\"");
+    var text = JSON.stringify(hash, replacer, 2);
+    while(true) {
+      var start = text.indexOf(startMarker);
+      var end = text.indexOf(endMarker); 
+      if (start == -1) {
+        break;
+      }
+      var substring = text.substring(start + startMarker.length, end);
+      while(substring.indexOf("\\n") >= 0) {
+        substring = substring.replace("\\n", "\n");
+      }
+      while(substring.indexOf("\\\"") >= 0) {
+        substring = substring.replace("\\\"", "\"");
+      }
+      text = text.substring(0, start - 1)
+          + substring
+          + text.substring(end + endMarker.length + 1);
     }
-    text = text.substring(0, start - 1)
-        + substring
-        + text.substring(end + endMarker.length + 1);
+    return text;
   }
+
+  var text = hashToString(hash);
+  var self = this;
   textarea.show("options", text);
+  textarea.okCallback = function(value) {
+    if (value != text) {
+      var newHash;
+      eval("newHash = " + value + ";");
+      self.write(newHash);
+      self.onchange();
+    }
+  };
 }
 
 /**
diff --git a/experimental/palette/palette.js b/experimental/palette/palette.js
index d98ab15..514463f 100644
--- a/experimental/palette/palette.js
+++ b/experimental/palette/palette.js
@@ -215,6 +215,9 @@ Palette.prototype.read = function() {
  * Write to input elements.
  */
 Palette.prototype.write = function(hash) {
+  if (!hash) {
+    return;
+  }
   var results = {};
   for (var opt in this.model) {
     if (this.model.hasOwnProperty(opt)) {
-- 
2.7.4