From 89bd53874202e682c1b803815770bc17621b8958 Mon Sep 17 00:00:00 2001
From: Sam <sam.saffron@gmail.com>
Date: Wed, 1 Mar 2017 12:56:29 -0500
Subject: [PATCH] add callback priority to tags html

---
 .../javascripts/discourse/lib/plugin-api.js.es6    |  7 ++++---
 .../javascripts/discourse/lib/render-tags.js.es6   | 14 ++++++++++++--
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/app/assets/javascripts/discourse/lib/plugin-api.js.es6 b/app/assets/javascripts/discourse/lib/plugin-api.js.es6
index e2e79d5b04b..de6576d10af 100644
--- a/app/assets/javascripts/discourse/lib/plugin-api.js.es6
+++ b/app/assets/javascripts/discourse/lib/plugin-api.js.es6
@@ -392,6 +392,7 @@ class PluginApi {
 
   /**
    * Register a callback to be called every time tags render
+   * highest priority callbacks are called first
    * example:
    *
    * callback = function(topic, params) {
@@ -400,11 +401,11 @@ class PluginApi {
    *    }
    * }
    *
-   * api.addTagsHtmlCallback(callback);
+   * api.addTagsHtmlCallback(callback, {priority: 100});
    *
    **/
-  addTagsHtmlCallback(callback) {
-    addTagsHtmlCallback(callback);
+  addTagsHtmlCallback(callback, options) {
+    addTagsHtmlCallback(callback, options);
   };
 
   /**
diff --git a/app/assets/javascripts/discourse/lib/render-tags.js.es6 b/app/assets/javascripts/discourse/lib/render-tags.js.es6
index 9f66eb36cdc..eb9934d15b6 100644
--- a/app/assets/javascripts/discourse/lib/render-tags.js.es6
+++ b/app/assets/javascripts/discourse/lib/render-tags.js.es6
@@ -1,10 +1,20 @@
 import renderTag from 'discourse/lib/render-tag';
 
 let callbacks = null;
+let priorities = null;
 
-export function addTagsHtmlCallback(callback) {
+export function addTagsHtmlCallback(callback, options) {
   callbacks = callbacks || [];
-  callbacks.push(callback);
+  priorities = priorities || [];
+  const priority = (options && options.priority) || 0;
+
+  let i = 0;
+  while(i < priorities.length && priorities[i] > priority) {
+    i += 1;
+  }
+
+  priorities.splice(i, 0, priority);
+  callbacks.splice(i, 0, callback);
 };
 
 export default function(topic, params){