props-model - npm Package Compare versions

Comparing version 0.7.0 to 0.8.0

dist/lib/props-model.js

@@ -42,2 +42,3 @@ "use strict";
     this._props = {};
+    this._firedProps = new Set();
   }
@@ -58,4 +59,19 @@ /**
   _firePropChangeEvent(propName, newValue, oldValue) {
-    this._eventEmitter.emit(`${propName}-changed`, propName, newValue, oldValue);
+    this._firePropChangeEvents([[propName, [newValue, oldValue]]]);
   }
+
+  _firePropChangeEvents(events) {
+    const firstInChain = this._firedProps.size === 0;
+    events.forEach(([propName, [newValue, oldValue]]) => {
+      this._firedProps.add(propName);
+
+      this._eventEmitter.emit(`${propName}-changed`, propName, newValue, oldValue);
+    });
+
+    if (firstInChain) {
+      this._eventEmitter.emit('prop-chain-completed', Array.from(this._firedProps));
+
+      this._firedProps.clear();
+    }
+  }
   /**
@@ -253,9 +269,5 @@ * Define a primary property that the model will track. It's value is set to the `initialValue`, which counts as setting
       });
-      Object.entries(args[0]).forEach(([propName, value], idx) => {
-        const oldValue = oldValues[idx];
+      const changeEvents = Object.entries(args[0]).map(([propName, value], idx) => [propName, [value, oldValues[idx]]]).filter(([propName, [newValue, oldValue]]) => this._props[propName].didChange(newValue, oldValue));
 
-        if (this._props[propName].didChange(value, oldValue)) {
-          this._firePropChangeEvent(propName, value, oldValue);
-        }
-      });
+      this._firePropChangeEvents(changeEvents);
     } else {
@@ -466,2 +478,6 @@ const propName = args[0],
   }
+
+  _onPropChainComplete(propFilter, handler) {
+    this._eventEmitter.on('prop-chain-completed', firedProps => handler(firedProps.filter(propFilter)));
+  }
   /**
@@ -505,2 +521,6 @@ * Register the given handler to be called with the values of all of the named properties anytime
 
+  onPropChainComplete(handler) {
+    return this._onPropChainComplete(() => true, handler);
+  }
+
   set(...args) {
@@ -541,3 +561,3 @@ return this._set(() => {}, ...args);
    *
-   * @returns {{get, set, createUtilizer, createChangeHandler, toJSON, getAll}}
+   * @returns {{get, set, createUtilizer, createChangeHandler, toJSON, getAll, getPropNames, }}
    */
@@ -555,3 +575,4 @@
       getAll: () => this._getAll(readChecker),
-      getPropNames: () => this._getPropNames(readChecker)
+      getPropNames: () => this._getPropNames(readChecker),
+      onPropChainComplete: (...args) => this._onPropChainComplete(readChecker, ...args)
     };
@@ -558,0 +579,0 @@ }

package.json

 {
   "name": "props-model",
-  "version": "0.7.0",
+  "version": "0.8.0",
   "description": "A model for properties including change events and derived properties",
@@ -5,0 +5,0 @@ "main": "dist/index.js",

No alert changes

Improved metrics

Total package byte prevSize

45680

increased by1.83%

Lines of code

755

increased by2.03%

No dependency changes