refactor: behavior item hook

packages/behavior/index.js

@@ -1,7 +1,6 @@
 export {Context} from './context';
 export {
   fromJSON as behaviorItemFromJSON,
-  register as registerBehaviorItem
 } from './item/registry';
 export {
   buildCondition,

packages/behavior/item/action.js

@@ -2,10 +2,6 @@ import {Traversal} from './traversal';
 
 export class Action extends Traversal {
 
-  static type() {
-    return 'action';
-  }
-
   toJSON() {
     return {
       ...super.toJSON(),

packages/behavior/item/actions.js

@@ -9,10 +9,6 @@ const decorate = compose(
 
 export class Actions extends decorate(Traversals) {
 
-  static type() {
-    return 'actions';
-  }
-
   constructor() {
     super();
     this._index = 0;

packages/behavior/item/collection.js

@@ -4,10 +4,6 @@ export function Collection(type) {
   const plural = `${type}s`;
   return class Collection {
 
-    static type() {
-      return plural;
-    }
-  
     constructor() {
       this[plural] = [];
     }

packages/behavior/item/condition.js

@@ -2,10 +2,6 @@ import {fromJSON as behaviorItemFromJSON} from './registry';
 
 export class Condition {
 
-  static type() {
-    return 'condition';
-  }
-
   constructor() {
     this.operator = '';
     this.operands = [];

packages/behavior/item/hooks.js

@@ -1,5 +1,3 @@
-import {register} from './registry';
-
 import {Action} from './action';
 import {Actions} from './actions';
 import {Condition} from './condition';
@@ -10,12 +8,16 @@ import {Routines} from './routines';
 import {Traversal} from './traversal';
 import {Traversals} from './traversals';
 
-register(Action);
-register(Actions);
-register(Condition);
-register(Conditions);
-register(Literal);
-register(Routine);
-register(Routines);
-register(Traversal);
-register(Traversals);
+export function avocadoBehaviorItems() {
+  return {
+    action: Action,
+    actions: Actions,
+    condition: Condition,
+    conditions: Conditions,
+    literal: Literal,
+    routine: Routine,
+    routines: Routines,
+    traversal: Traversal,
+    traversals: Traversals,
+  };
+}

packages/behavior/item/literal.js

@@ -1,9 +1,5 @@
 export class Literal {
 
-  static type() {
-    return 'literal';
-  }
-
   constructor() {
     this.value = null;
   }

packages/behavior/item/registry.js

@@ -1,17 +1,26 @@
-const behaviorItemRegistry = new Map();
+import {invokeHookFlat} from '@avocado/core';
+
+let _behaviorItems;
 
 export function fromJSON({type, ...json}) {
-  const Class = behaviorItemRegistry.get(type);
+  const items = behaviorItems();
+  const Class = items[type];
   if (!Class) {
     throw new TypeError(`There is no class for the behavior item "${type}"`);
   }
   return (new Class()).fromJSON(json);
 }
 
-export function deregister(BehaviorItem) {
-  behaviorItemRegistry.delete(BehaviorItem.type());
-}
-
-export function register(BehaviorItem) {
-  behaviorItemRegistry.set(BehaviorItem.type(), BehaviorItem);
+function behaviorItems() {
+  if (!_behaviorItems) {
+    _behaviorItems = {};
+    const itemsLists = invokeHookFlat('avocadoBehaviorItems');
+    for (let i = 0; i < itemsLists.length; i++) {
+      _behaviorItems = {
+        ..._behaviorItems,
+        ...itemsLists[i],
+      };
+    }
+  }
+  return _behaviorItems;
 }

packages/behavior/item/routine.js

@@ -2,10 +2,6 @@ import {Actions} from './actions';
 
 export class Routine {
 
-  static type() {
-    return 'routine';
-  }
-
   constructor() {
     this.actions = new Actions();
   }

packages/behavior/item/routines.js

@@ -2,10 +2,6 @@ import {Routine} from './routine';
 
 export class Routines {
 
-  static type() {
-    return 'routines';
-  }
-
   constructor() {
     this.routines = {};
   }

packages/behavior/item/traversal.js

@@ -2,10 +2,6 @@ import {fromJSON as behaviorItemFromJSON} from './registry';
 
 export class Traversal {
 
-  static type() {
-    return 'traversal';
-  }
-
   constructor() {
     this.steps = [];
     this.value = undefined;