Split up shiny.js

srcjs/binding_registry.js

@@ -0,0 +1,37 @@
+  var BindingRegistry = function() {
+    this.bindings = [];
+    this.bindingNames = {};
+  };
+  (function() {
+    this.register = function(binding, bindingName, priority) {
+      var bindingObj = {binding: binding, priority: priority || 0};
+      this.bindings.unshift(bindingObj);
+      if (bindingName) {
+        this.bindingNames[bindingName] = bindingObj;
+        binding.name = bindingName;
+      }
+    };
+    this.setPriority = function(bindingName, priority) {
+      var bindingObj = this.bindingNames[bindingName];
+      if (!bindingObj)
+        throw "Tried to set priority on unknown binding " + bindingName;
+      bindingObj.priority = priority || 0;
+    };
+    this.getPriority = function(bindingName) {
+      var bindingObj = this.bindingNames[bindingName];
+      if (!bindingObj)
+        return false;
+      return bindingObj.priority;
+    };
+    this.getBindings = function() {
+      // Sort the bindings. The ones with higher priority are consulted
+      // first; ties are broken by most-recently-registered.
+      return mergeSort(this.bindings, function(a, b) {
+        return b.priority - a.priority;
+      });
+    };
+  }).call(BindingRegistry.prototype);
+
+
+  var inputBindings = exports.inputBindings = new BindingRegistry();
+  var outputBindings = exports.outputBindings = new BindingRegistry();