initial commit

node_modules/emissary/lib/emitter.js

@@ -0,0 +1,384 @@
+(function() {
+  var Emitter, Mixin, Signal, Subscription, removeFromArray, subscriptionRemovedPattern, _ref,
+    __hasProp = {}.hasOwnProperty,
+    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    __slice = [].slice;
+
+  Mixin = require('mixto');
+
+  Signal = null;
+
+  Subscription = null;
+
+  subscriptionRemovedPattern = /^(last-)?.+-subscription-removed$/;
+
+  module.exports = Emitter = (function(_super) {
+    __extends(Emitter, _super);
+
+    function Emitter() {
+      _ref = Emitter.__super__.constructor.apply(this, arguments);
+      return _ref;
+    }
+
+    Emitter.prototype.eventHandlersByEventName = null;
+
+    Emitter.prototype.eventHandlersByNamespace = null;
+
+    Emitter.prototype.subscriptionCounts = null;
+
+    Emitter.prototype.pauseCountsByEventName = null;
+
+    Emitter.prototype.queuedEventsByEventName = null;
+
+    Emitter.prototype.globalPauseCount = null;
+
+    Emitter.prototype.globalQueuedEvents = null;
+
+    Emitter.prototype.signalsByEventName = null;
+
+    Emitter.prototype.on = function(eventNames, handler) {
+      var eventName, namespace, _base, _base1, _base2, _i, _len, _ref1, _ref2;
+      _ref1 = eventNames.split(/\s+/);
+      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
+        eventName = _ref1[_i];
+        if (!(eventName !== '')) {
+          continue;
+        }
+        _ref2 = eventName.split('.'), eventName = _ref2[0], namespace = _ref2[1];
+        this.emit("" + eventName + "-subscription-will-be-added", handler);
+        if (this.incrementSubscriptionCount(eventName) === 1) {
+          this.emit("first-" + eventName + "-subscription-will-be-added", handler);
+        }
+        if (this.eventHandlersByEventName == null) {
+          this.eventHandlersByEventName = {};
+        }
+        if ((_base = this.eventHandlersByEventName)[eventName] == null) {
+          _base[eventName] = [];
+        }
+        this.eventHandlersByEventName[eventName].push(handler);
+        if (namespace) {
+          if (this.eventHandlersByNamespace == null) {
+            this.eventHandlersByNamespace = {};
+          }
+          if ((_base1 = this.eventHandlersByNamespace)[namespace] == null) {
+            _base1[namespace] = {};
+          }
+          if ((_base2 = this.eventHandlersByNamespace[namespace])[eventName] == null) {
+            _base2[eventName] = [];
+          }
+          this.eventHandlersByNamespace[namespace][eventName].push(handler);
+        }
+        this.emit("" + eventName + "-subscription-added", handler);
+      }
+      if (Subscription == null) {
+        Subscription = require('./subscription');
+      }
+      return new Subscription(this, eventNames, handler);
+    };
+
+    Emitter.prototype.once = function(eventName, handler) {
+      var subscription;
+      return subscription = this.on(eventName, function() {
+        var args;
+        args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
+        subscription.off();
+        return handler.apply(null, args);
+      });
+    };
+
+    Emitter.prototype.signal = function(eventName) {
+      var _base;
+      if (Signal == null) {
+        Signal = require('./signal');
+      }
+      if (this.signalsByEventName == null) {
+        this.signalsByEventName = {};
+      }
+      return (_base = this.signalsByEventName)[eventName] != null ? (_base = this.signalsByEventName)[eventName] : _base[eventName] = Signal.fromEmitter(this, eventName);
+    };
+
+    Emitter.prototype.behavior = function(eventName, initialValue) {
+      return this.signal(eventName).toBehavior(initialValue);
+    };
+
+    Emitter.prototype.emit = function(eventName, payload) {
+      var handler, handlers, queuedEvents, _i, _len, _ref1, _ref2, _ref3;
+      if (arguments.length > 2 || /\s|\./.test(eventName)) {
+        return this.emitSlow.apply(this, arguments);
+      } else {
+        if (this.globalQueuedEvents != null) {
+          return this.globalQueuedEvents.push([eventName, payload]);
+        } else {
+          if (queuedEvents = (_ref1 = this.queuedEventsByEventName) != null ? _ref1[eventName] : void 0) {
+            return queuedEvents.push([eventName, payload]);
+          } else if (handlers = (_ref2 = this.eventHandlersByEventName) != null ? _ref2[eventName] : void 0) {
+            _ref3 = handlers.slice();
+            for (_i = 0, _len = _ref3.length; _i < _len; _i++) {
+              handler = _ref3[_i];
+              handler(payload);
+            }
+            return this.emit("after-" + eventName, payload);
+          }
+        }
+      }
+    };
+
+    Emitter.prototype.emitSlow = function() {
+      var args, eventName, handlers, namespace, queuedEvents, _ref1, _ref2, _ref3, _ref4, _ref5, _ref6;
+      eventName = arguments[0], args = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
+      if (this.globalQueuedEvents) {
+        return this.globalQueuedEvents.push([eventName].concat(__slice.call(args)));
+      } else {
+        _ref1 = eventName.split('.'), eventName = _ref1[0], namespace = _ref1[1];
+        if (namespace) {
+          if (queuedEvents = (_ref2 = this.queuedEventsByEventName) != null ? _ref2[eventName] : void 0) {
+            return queuedEvents.push(["" + eventName + "." + namespace].concat(__slice.call(args)));
+          } else if (handlers = (_ref3 = this.eventHandlersByNamespace) != null ? (_ref4 = _ref3[namespace]) != null ? _ref4[eventName] : void 0 : void 0) {
+            (function(func, args, ctor) {
+              ctor.prototype = func.prototype;
+              var child = new ctor, result = func.apply(child, args);
+              return Object(result) === result ? result : child;
+            })(Array, handlers, function(){}).forEach(function(handler) {
+              return handler.apply(null, args);
+            });
+            return this.emit.apply(this, ["after-" + eventName].concat(__slice.call(args)));
+          }
+        } else {
+          if (queuedEvents = (_ref5 = this.queuedEventsByEventName) != null ? _ref5[eventName] : void 0) {
+            return queuedEvents.push([eventName].concat(__slice.call(args)));
+          } else if (handlers = (_ref6 = this.eventHandlersByEventName) != null ? _ref6[eventName] : void 0) {
+            (function(func, args, ctor) {
+              ctor.prototype = func.prototype;
+              var child = new ctor, result = func.apply(child, args);
+              return Object(result) === result ? result : child;
+            })(Array, handlers, function(){}).forEach(function(handler) {
+              return handler.apply(null, args);
+            });
+            return this.emit.apply(this, ["after-" + eventName].concat(__slice.call(args)));
+          }
+        }
+      }
+    };
+
+    Emitter.prototype.off = function(eventNames, handler) {
+      var eventHandlers, eventName, handlers, namespace, namespaceHandlers, _i, _j, _k, _l, _len, _len1, _len2, _len3, _ref1, _ref10, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7, _ref8, _ref9;
+      if (eventNames) {
+        _ref1 = eventNames.split(/\s+/);
+        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
+          eventName = _ref1[_i];
+          if (!(eventName !== '')) {
+            continue;
+          }
+          _ref2 = eventName.split('.'), eventName = _ref2[0], namespace = _ref2[1];
+          if (eventName === '') {
+            eventName = void 0;
+          }
+          if (namespace) {
+            if (eventName) {
+              handlers = (_ref3 = (_ref4 = this.eventHandlersByNamespace) != null ? (_ref5 = _ref4[namespace]) != null ? _ref5[eventName] : void 0 : void 0) != null ? _ref3 : [];
+              if (handler != null) {
+                removeFromArray(handlers, handler);
+                this.off(eventName, handler);
+              } else {
+                _ref6 = (function(func, args, ctor) {
+                  ctor.prototype = func.prototype;
+                  var child = new ctor, result = func.apply(child, args);
+                  return Object(result) === result ? result : child;
+                })(Array, handlers, function(){});
+                for (_j = 0, _len1 = _ref6.length; _j < _len1; _j++) {
+                  handler = _ref6[_j];
+                  removeFromArray(handlers, handler);
+                  this.off(eventName, handler);
+                }
+              }
+            } else {
+              namespaceHandlers = (_ref7 = (_ref8 = this.eventHandlersByNamespace) != null ? _ref8[namespace] : void 0) != null ? _ref7 : {};
+              if (handler != null) {
+                for (eventName in namespaceHandlers) {
+                  handlers = namespaceHandlers[eventName];
+                  removeFromArray(handlers, handler);
+                  this.off(eventName, handler);
+                }
+              } else {
+                for (eventName in namespaceHandlers) {
+                  handlers = namespaceHandlers[eventName];
+                  _ref9 = (function(func, args, ctor) {
+                    ctor.prototype = func.prototype;
+                    var child = new ctor, result = func.apply(child, args);
+                    return Object(result) === result ? result : child;
+                  })(Array, handlers, function(){});
+                  for (_k = 0, _len2 = _ref9.length; _k < _len2; _k++) {
+                    handler = _ref9[_k];
+                    removeFromArray(handlers, handler);
+                    this.off(eventName, handler);
+                  }
+                }
+              }
+            }
+          } else {
+            eventHandlers = (_ref10 = this.eventHandlersByEventName) != null ? _ref10[eventName] : void 0;
+            if (eventHandlers == null) {
+              return;
+            }
+            if (handler == null) {
+              for (_l = 0, _len3 = eventHandlers.length; _l < _len3; _l++) {
+                handler = eventHandlers[_l];
+                this.off(eventName, handler);
+              }
+              return;
+            }
+            if (removeFromArray(eventHandlers, handler)) {
+              this.decrementSubscriptionCount(eventName);
+              this.emit("" + eventName + "-subscription-removed", handler);
+              if (this.getSubscriptionCount(eventName) === 0) {
+                this.emit("last-" + eventName + "-subscription-removed", handler);
+                delete this.eventHandlersByEventName[eventName];
+              }
+            }
+          }
+        }
+      } else {
+        for (eventName in this.eventHandlersByEventName) {
+          if (!subscriptionRemovedPattern.test(eventName)) {
+            this.off(eventName);
+          }
+        }
+        for (eventName in this.eventHandlersByEventName) {
+          this.off(eventName);
+        }
+        return this.eventHandlersByNamespace = {};
+      }
+    };
+
+    Emitter.prototype.pauseEvents = function(eventNames) {
+      var eventName, _base, _base1, _i, _len, _ref1, _results;
+      if (eventNames) {
+        _ref1 = eventNames.split(/\s+/);
+        _results = [];
+        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
+          eventName = _ref1[_i];
+          if (!(eventName !== '')) {
+            continue;
+          }
+          if (this.pauseCountsByEventName == null) {
+            this.pauseCountsByEventName = {};
+          }
+          if (this.queuedEventsByEventName == null) {
+            this.queuedEventsByEventName = {};
+          }
+          if ((_base = this.pauseCountsByEventName)[eventName] == null) {
+            _base[eventName] = 0;
+          }
+          this.pauseCountsByEventName[eventName]++;
+          _results.push((_base1 = this.queuedEventsByEventName)[eventName] != null ? (_base1 = this.queuedEventsByEventName)[eventName] : _base1[eventName] = []);
+        }
+        return _results;
+      } else {
+        if (this.globalPauseCount == null) {
+          this.globalPauseCount = 0;
+        }
+        if (this.globalQueuedEvents == null) {
+          this.globalQueuedEvents = [];
+        }
+        return this.globalPauseCount++;
+      }
+    };
+
+    Emitter.prototype.resumeEvents = function(eventNames) {
+      var event, eventName, queuedEvents, _i, _j, _len, _len1, _ref1, _ref2, _results, _results1;
+      if (eventNames) {
+        _ref1 = eventNames.split(/\s+/);
+        _results = [];
+        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
+          eventName = _ref1[_i];
+          if (eventName !== '') {
+            if (((_ref2 = this.pauseCountsByEventName) != null ? _ref2[eventName] : void 0) > 0 && --this.pauseCountsByEventName[eventName] === 0) {
+              queuedEvents = this.queuedEventsByEventName[eventName];
+              this.queuedEventsByEventName[eventName] = null;
+              _results.push((function() {
+                var _j, _len1, _results1;
+                _results1 = [];
+                for (_j = 0, _len1 = queuedEvents.length; _j < _len1; _j++) {
+                  event = queuedEvents[_j];
+                  _results1.push(this.emit.apply(this, event));
+                }
+                return _results1;
+              }).call(this));
+            } else {
+              _results.push(void 0);
+            }
+          }
+        }
+        return _results;
+      } else {
+        for (eventName in this.pauseCountsByEventName) {
+          this.resumeEvents(eventName);
+        }
+        if (this.globalPauseCount > 0 && --this.globalPauseCount === 0) {
+          queuedEvents = this.globalQueuedEvents;
+          this.globalQueuedEvents = null;
+          _results1 = [];
+          for (_j = 0, _len1 = queuedEvents.length; _j < _len1; _j++) {
+            event = queuedEvents[_j];
+            _results1.push(this.emit.apply(this, event));
+          }
+          return _results1;
+        }
+      }
+    };
+
+    Emitter.prototype.incrementSubscriptionCount = function(eventName) {
+      var _base;
+      if (this.subscriptionCounts == null) {
+        this.subscriptionCounts = {};
+      }
+      if ((_base = this.subscriptionCounts)[eventName] == null) {
+        _base[eventName] = 0;
+      }
+      return ++this.subscriptionCounts[eventName];
+    };
+
+    Emitter.prototype.decrementSubscriptionCount = function(eventName) {
+      var count;
+      count = --this.subscriptionCounts[eventName];
+      if (count === 0) {
+        delete this.subscriptionCounts[eventName];
+      }
+      return count;
+    };
+
+    Emitter.prototype.getSubscriptionCount = function(eventName) {
+      var count, name, total, _ref1, _ref2, _ref3;
+      if (eventName != null) {
+        return (_ref1 = (_ref2 = this.subscriptionCounts) != null ? _ref2[eventName] : void 0) != null ? _ref1 : 0;
+      } else {
+        total = 0;
+        _ref3 = this.subscriptionCounts;
+        for (name in _ref3) {
+          count = _ref3[name];
+          total += count;
+        }
+        return total;
+      }
+    };
+
+    Emitter.prototype.hasSubscriptions = function(eventName) {
+      return this.getSubscriptionCount(eventName) > 0;
+    };
+
+    return Emitter;
+
+  })(Mixin);
+
+  removeFromArray = function(array, element) {
+    var index;
+    index = array.indexOf(element);
+    if (index > -1) {
+      array.splice(index, 1);
+      return true;
+    } else {
+      return false;
+    }
+  };
+
+}).call(this);