From c19a760691f461af2cc87e3a29cdff815234e53b Mon Sep 17 00:00:00 2001
From: Kamil Nikel <knikel@posteo.de>
Date: Wed, 4 Nov 2015 17:32:31 +0100
Subject: [PATCH] Add documentation task

---
 Gulpfile.js   | 7 +++++++
 package.json  | 1 +
 src/Viewer.ts | 7 +++++++
 3 files changed, 15 insertions(+)

diff --git a/Gulpfile.js b/Gulpfile.js
index 322474cb..d33f16cd 100644
--- a/Gulpfile.js
+++ b/Gulpfile.js
@@ -1,6 +1,7 @@
 var gulp = require('gulp')
 
 var browserify = require('browserify')
+var documentation = require('gulp-documentation')
 var source = require('vinyl-source-stream')
 var serve = require('gulp-serve')
 var standard = require('gulp-standard')
@@ -87,4 +88,10 @@ gulp.task('browserify', ['typescript'], function () {
     .pipe(gulp.dest('./dist/'))
 })
 
+gulp.task('documentation', ['typescript'], function () {
+  gulp.src('./dist/Viewer.js')
+    .pipe(documentation({format: 'html' }))
+    .pipe(gulp.dest('html-documentation'))
+})
+
 gulp.task('default', ['serve', 'watch-ts', 'typescript'])
diff --git a/package.json b/package.json
index dec18640..c779be1b 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
     "browserify": "12.0.1",
     "ghooks": "0.3.2",
     "gulp": "3.9.0",
+    "gulp-documentation": "2.0.0",
     "gulp-serve": "1.2.0",
     "gulp-standard": "5.2.2",
     "gulp-tsd": "0.0.4",
diff --git a/src/Viewer.ts b/src/Viewer.ts
index a6fcdcdb..041826fb 100644
--- a/src/Viewer.ts
+++ b/src/Viewer.ts
@@ -2,6 +2,13 @@ interface INode {
     node: string;
 }
 
+/**
+ * This function initializes the viewer
+ * @param { string } id of the viewer
+ * @param { Node } initialNode which the viewer displays
+ * @returns { Viewer } a new viewer
+ */
+
 export class Viewer {
     constructor (id: string, node: INode ) {
         return "Viewer -- id: " + id + ", node: " + node.node;