Update developer documentation and buildout dependencies

Makefile

@@ -227,10 +227,12 @@ check: eslint dist/converse.js
 ## Documentation
 
 ./bin/activate:
-	virtualenv .
+	python3 -m venv .
 
 .installed.cfg: requirements.txt buildout.cfg
 	./bin/pip install -r requirements.txt
+	./bin/pip install --upgrade pip==19.2.1
+	./bin/pip install --upgrade setuptools==41.0.1
 	./bin/buildout -v
 
 docsdev: ./bin/activate .installed.cfg

buildout.cfg

@@ -11,4 +11,5 @@ eggs =
     sphinx-bootstrap-theme
 
 [versions]
-Sphinx = 1.8.1
+Sphinx = 2.1.2
+docutils = 0.15.1

docs/source/development.rst

@@ -8,27 +8,14 @@
 Development
 ===========
 
-Welcome to the developer documentation of Converse.
+Welcome to the developer documentation of Converse.js.
 
-Read the documentation linked to below, if you want to add new features or
-create your own customized version of Converse.
-
-Converse has a plugin architecture (see `pluggable.js <https://github.com/jcbrand/pluggable.js/>`_)
-which lets you add new features or modify existing functionality without having to touch
-the core files (in the `src/ <https://github.com/conversejs/converse.js/tree/master/src>`_ directory).
-This is the recommended way to customize or add new functionality to Converse.
-
-Plugins are especially useful if you want to add proprietary modifications, since the
-Mozilla Public License version 2 doesn't require you to open source your
-plugins. Be aware that this doesn't apply when you intend to use libsignal for
-OMEMO encryption because libsignal's license is GPLv3.
-
-Refer to the section on `plugin development <https://conversejs.org/docs/html/plugin_development.html>`_
-for more info on how to write plugins.
+Here you will learn how to add new features and how you can create your own
+customized version of Converse.
 
 Converse is a community project and largely volunteer driven.
 
-We're grateful for your contributions, so please don't hesitate to 
+We're grateful for your contributions, so please don't hesitate to
 make a `Github pull request <https://help.github.com/categories/collaborating-with-issues-and-pull-requests/>`_
 to fix a bug or to add new functionality.
 

docs/source/plugin_development.rst

@@ -10,38 +10,62 @@ Writing a plugin
 Introduction
 ------------
 
-Converse exposes a plugin architecture through which developers can modify
-and extend its functionality.
+Converse.js has a plugin architecture based on `pluggable.js <https://github.com/jcbrand/pluggable.js/>`_
+and is itself composed out of plugins.
 
-Using plugins is good engineering practice, and using them is the *only* recommended
-way of changing Converse or adding new features to it.
+There are only a few files that are included in the default build of Converse
+which aren't plugins.
 
-In particular, plugins have the following advantages:
+An important one is `converse-core.js <https://github.com/conversejs/converse.js/blob/master/src/headless/converse-core.js>`_,
+which is responsible for bootstrapping the plugin architecture,
+setting up and maintaining the connection to the XMPP
+server and declaring the public (`window.converse </docs/html/api/converse.html>`_) and protected (`_converse.api </docs/html/api/-_converse.api.html>`_) APIs.
 
-The main benefit of plugins is their *isolation of concerns* (and features).
-From this benefit flows various 2nd degree advantages, such as the ability to
+The other non-plugin files all contain utility methods in
+`src/utils <https://github.com/conversejs/converse.js/blob/master/src/utils>`_ and
+`src/headless/utils <https://github.com/conversejs/converse.js/blob/master/src/headless/utils>`_.
+
+As a general rule, any file in the ``./src`` directory that starts with
+``converse-`` is a plugin (with the exception of ``converse-core.js``.
+
+The plugin architecture lets you add new features or modify existing functionality in a
+modular and self-contained way, without having to change other files.
+
+This ensures that plugins are fully optional (one of the design goals of
+Converse) and can be removed from the main build without breaking the app.
+For example, the ``converse-omemo``,
+``converse-rosterview``, ``converse-dragresize``, ``converse-minimize``,
+``converse-muc`` and ``converse-muc-views`` plugins can all be removed from the
+build without breaking the app.
+
+To more deeply understand how the plugin architecture works, read the
+`pluggable.js documentation <https://jcbrand.github.io/pluggable.js/>`_
+and to understand its inner workings, refer to the `annotated source code
+<https://jcbrand.github.io/pluggable.js/docs/pluggable.html>`_.
+
+Advantages of plugins
+---------------------
+
+Writing a plugin is the recommended way to customize or add new features to Converse.
+
+The main benefit of plugins is that they allow for **isolation of concerns** (and features).
+From this benefit flows various 2nd order advantages, such as the ability to
 make smaller production builds (by excluding unused plugins) and an easier
 upgrade path by avoiding touching Converse's internals.
 
+Plugins are especially useful if you want to add proprietary modifications, since the
+Mozilla Public License version 2 doesn't require you to open source your
+plugin files. Be aware that this doesn't apply when you intend to use libsignal for
+OMEMO encryption because libsignal's license is GPLv3 (and turns the entire app
+into a GPLv3 app).
+
 Each plugin comes in its own file, and Converse's plugin architecture,
-called `pluggable.js <https://github.com/jcbrand/pluggable.js/>`_, provides you
+`pluggable.js <https://github.com/jcbrand/pluggable.js/>`_, provides you
 with the ability to "hook in" to the core code and other plugins.
 
-Converse itself is composed out of plugins and uses pluggable.js. Take a look at the
-`src <https://github.com/jcbrand/converse.js/tree/master/src>`_ directory. All
-the files that follow the pattern `converse-*.js` are plugins.
-
-Plugins (by way of Pluggable.js) enable developers to extend and override existing objects,
+Plugins enable developers to extend and override existing objects,
 functions and the `Backbone <http://backbonejs.org/>`_ models and views that make up
-Converse.
-
-Besides that, in plugins you can also write new Backbone (or other) models and views,
-in order to add a new functionality.
-
-To more deeply understand how this plugin architecture works, please read the
-`pluggable.js documentation <https://jcbrand.github.io/pluggable.js/>`_
-and to understand its inner workings, please refer to the `annotated source code
-<https://jcbrand.github.io/pluggable.js/docs/pluggable.html>`_.
+Converse. You can also create new Backbone (or other) models and views.
 
 .. note:: **Trying out a plugin in JSFiddle**
 

docs/source/style_guide.rst

@@ -20,10 +20,10 @@ We use camelCase for function names and underscores for variables names.
 
 For example:
 
-.. code-block:: javascript 
+.. code-block:: javascript
 
     function thisIsAFunction () {
-        var this_is_a_variable;
+        let this_is_a_variable;
         ...
     }
 
@@ -34,7 +34,7 @@ In general, spaces are put around operators, such as the equals ``=`` or plus ``
 
 For example:
 
-.. code-block:: javascript 
+.. code-block:: javascript
 
     if (sublocale != locale) {
         // do something
@@ -42,7 +42,7 @@ For example:
 
 An exception is when they appear inside for-loop expressions, for example:
 
-.. code-block:: javascript 
+.. code-block:: javascript
 
     for (i=0; i<msgs_length; i++) {
         // do something
@@ -51,18 +51,23 @@ An exception is when they appear inside for-loop expressions, for example:
 Generally though, rather err on the side of adding spaces, since they make the
 code much more readable.
 
-Constants are written in ALL_CAPS
----------------------------------
+Global constants are written in ALL_CAPS
+----------------------------------------
 
-Identifiers that denote constant values should be written in
+Global identifiers that denote constant values should be written in
 all capital letters, with underscores between words.
 
 For example:
 
-.. code-block:: javascript 
+.. code-block:: javascript
+
+    const SECONDS_IN_HOUR = 3600;
 
-    var SECONDS_IN_HOUR = 3600;
-    var seconds_since_message = 0;
+    function update () {
+        const timeout = 20;
+        let seconds_since_message = 0;
+        // other stuff here
+    }
 
 
 Function declaration and invocation
@@ -71,7 +76,7 @@ Function declaration and invocation
 When declaring a function, the function name and the brackets after it are separated
 with a space. Like so:
 
-.. code-block:: javascript 
+.. code-block:: javascript
 
     function update (model) {
         model.foo = 'bar';
@@ -80,7 +85,7 @@ with a space. Like so:
 When calling the same function, the brackets are written without a space in
 between:
 
-.. code-block:: javascript 
+.. code-block:: javascript
 
     update(model);
 
@@ -102,7 +107,7 @@ The closing curly bracket appears on its own line.
 
 For example:
 
-.. code-block:: javascript 
+.. code-block:: javascript
 
     if (locales[locale]) {
         return locales[locale];
@@ -122,7 +127,7 @@ the compiler (for example if its only one line inside the ``if`` statement).
 
 For example, like this:
 
-.. code-block:: javascript 
+.. code-block:: javascript
 
     if (condition === true) {
         this.updateRoomsList();

requirements.txt

-zc.buildout==2.12.1
+zc.buildout==2.13.2

src/headless/converse-core.js

@@ -1831,6 +1831,7 @@ _converse.api = {
  * or closured data. To do that, you’ll need to create a plugin, which has
  * access to the private API method.
  *
+ * @global
  * @namespace converse
  */
 const converse = {