🚧 Working on hooks

src/hooks.js

@@ -1,6 +1,6 @@
 function Hooks() {
   this._hooks = {};
-  this.all = ["preRenderSvg", "postRenderSvg", "insertText"];
+  this.all = ["preRenderSvg", "postRenderSvg", "insertText", "debug"];
 }
 
 Hooks.prototype.list = function(hook) {
@@ -13,9 +13,7 @@ Hooks.prototype.list = function(hook) {
 
 Hooks.prototype.attach = function(hook, obj) {
   if (typeof this._hooks[hook] === "undefined") return;
-  for (let func of this._hooks[hook]) {
-    obj.pre(hook, func);
-  }
+  for (let func of this._hooks[hook]) obj.pre(hook, func);
 };
 
 export default Hooks;

src/part.js

@@ -20,6 +20,8 @@ function Part() {
   this.render = true;
   this.points.origin = new Point(0, 0);
   for (let k in hooklib) this[k] = hooklib[k];
+  // Keep track of attached hooks
+  this.attached = { debug: false };
 
   // Constructors so macros can create objects
   this.Point = Point;
@@ -47,6 +49,16 @@ Part.prototype.macroRunner = function(args) {
   return method;
 };
 
+/** Debug method, exposes debug hook */
+Part.prototype.debug = function(data) {
+  if (this.attached.debug === false) {
+    let self = this;
+    this.hooks.attach("debug", self);
+    this.attached.debug = true;
+    this.debug(data);
+  }
+};
+
 /** Returns an unused ID */
 Part.prototype.getUid = function() {
   this.freeId += 1;

src/pattern.js

@@ -54,6 +54,7 @@ export default function Pattern(config = false) {
   };
   this.Part.prototype.context = this.context;
   this.Part.prototype.macros = {};
+  this.Part.prototype.hooks = this.hooks;
 }
 
 /**
@@ -66,9 +67,9 @@ Pattern.prototype.draft = function() {
 };
 
 Pattern.prototype.render = function() {
-  this.hooks.attach("preRenderSvg", this.svg);
+  //this.hooks.attach("preRenderSvg", this.svg);
 
-  this.hooks.attach("postRenderSvg", this.svg);
+  //this.hooks.attach("postRenderSvg", this.svg);
   //this.hooks.attach('insertText', this.svg);
 
   return this.pack().svg.render(this);

src/svg.js

@@ -23,19 +23,46 @@ function Svg(pattern) {
     "http://freesewing.org/namespaces/freesewing"
   );
   this.attributes.add("freesewing", version);
-  this.hooks = pattern.hooks.all;
+  this.hooks = pattern.hooks;
   for (let k in hooklib) this[k] = hooklib[k];
-  for (let k in this.hooks) this.hook(k, this[k]);
+  for (let k in pattern.hooks.all) this.hook(k, this[k]);
+  // Keep track of attached hooks
+  this.attached = {
+    preRenderSvg: false,
+    postRenderSvg: false,
+    insertText: false
+  };
 }
 
 /** Method to attach preRenderSvg hooks on */
-Svg.prototype.preRenderSvg = function() {};
+Svg.prototype.preRenderSvg = function() {
+  if (this.attached.preRenderSvg === false) {
+    let self = this;
+    this.hooks.attach("preRenderSvg", self);
+    this.attached.preRenderSvg = true;
+    this.preRenderSvg();
+  }
+};
 
 /** Method to attach postRenderSvg hooks on */
-Svg.prototype.postRenderSvg = function() {};
+Svg.prototype.postRenderSvg = function() {
+  if (this.attached.postRenderSvg === false) {
+    let self = this;
+    this.hooks.attach("postRenderSvg", self);
+    this.attached.postRenderSvg = true;
+    this.postRenderSvg();
+  }
+};
 
 /** Method to attach insertText hooks on */
-Svg.prototype.insertText = function() {};
+Svg.prototype.insertText = function(data) {
+  if (this.attached.inserText === false) {
+    let self = this;
+    this.hooks.attach("insertText", self);
+    this.attached.insertText = true;
+    this.insertText(data);
+  }
+};
 
 /** Renders a draft object as SVG */
 Svg.prototype.render = function(pattern) {

src/utils.js

@@ -83,7 +83,8 @@ export function shorthand(part) {
     Path: part.Path,
     Snippet: part.Snippet,
     final,
-    paperless
+    paperless,
+    debug: part.debug
   };
 }