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src/nodes/io.js

@@ -0,0 +1,130 @@
+import * as types from './types';
+
+
+export class Input {
+
+    constructor(name, owner) {
+        this.__output = null;
+        this.__value = null;
+        this.__name = name;
+        this.__owner = owner
+        this.__listeners = [];
+        this.__onchangelistener = (value) => {
+            this.value = value;
+            this.__notifyListeners();
+        }
+    }
+
+    get name() {
+        return this.__name;
+    }
+
+    get value() {
+        return this.__value;
+    }
+
+    set value(value) {
+        this.__value = value;
+        this.__owner.update(this.name);
+    }
+
+    connect(output) {
+        this.__output = output
+        this.__output.onchange(this.__onchangelistener);
+    }
+
+    disconnect(output) {
+        this.__output.offchage(this.__onchangelistener);
+    }
+
+    __notifyListeners() {
+        for (let listener of this.__listeners) {
+            listener(this.value, this.name);
+        }
+    }
+
+    onchange(listener) {
+        this.__listeners.push(listener);
+    }
+
+    offchange(listener) {
+        this.__listeners = this.__listeners
+            .filter((l) => l !== listener);
+    }
+}
+
+export class Output {
+
+    constructor(name, owner) {
+        this.__value = null;
+        this.__name = name;
+        this.__owner = owner
+        this.__listeners = [];
+    }
+
+    get name() {
+        return this.__name;
+    }
+
+    get value() {
+        return this.__value;
+    }
+
+    set value(value) {
+        this.__value = value;
+        this.__notifyListeners();
+    }
+
+    __notifyListeners() {
+        for (let listener of this.__listeners) {
+            listener(this.value, this.name);
+        }
+    }
+
+    onchange(listener) {
+        this.__listeners.push(listener);
+    }
+
+    offchange(listener) {
+        this.__listeners = this.__listeners
+            .filter((l) => l !== listener);
+    }
+}
+
+
+export class Inputs {
+
+    constructor(variables) {
+        this.__values = {};
+        this.variables = variables;
+
+        for (let name of Object.keys(this.variables)) {
+            this.__values[name] = new Input(name, this);
+            Object.defineProperty(this, name, {
+                get() {
+                    return this.__values[name];
+                },
+            })
+        }
+    }
+
+    update(changed) {
+
+    }
+}
+
+export class Outputs {
+    constructor(variables) {
+        this.__values = {};
+        this.variables = variables;
+
+        for (let name of Object.keys(this.variables)) {
+            this.__values[name] = new Output(name, this);
+            Object.defineProperty(this, name, {
+                get() {
+                    return this.__values[name];
+                },
+            })
+        }
+    }
+}