Add ability to specify custom link in modal footer

Author: sirpengi

README.md

@@ -106,6 +106,14 @@ you can pass some properties in to customize the default behavior.
      * Prevents the widget iframe from loading Google Analytics. Defaults to false.
      */
     disableGoogleAnalytics: false, // @type {boolean}
+
+    /*
+     * To add a custom link to the modal footer.
+     */
+    custom_disclaimer_link: {
+      text: 'Link text', // @type {string} link text
+      href: 'http://battleforthenet.com/' // @type {string} link href attribute
+    },
     
     /*
      * Always show the widget. Useful for testing.

src/iframe/iframe.html

@@ -58,7 +58,7 @@ <h1 id="headline"></h1>
               </button>
             </form>
 
-            <div class="disclaimer">
+            <div id="disclaimer" class="disclaimer">
               <p>We will only use your phone number to connect this call. <a href="https://www.battleforthenet.com/privacy/" target="_blank">Privacy policy</a>. <a href="https://github.com/fightforthefuture/battleforthenet-widget#how-to-install-the-widget" target="_blank">Get the code</a>. Not in the US? <a class="donate" href="https://donate.fightforthefuture.org/" target="_blank">Donate</a>.</p>
             </div>
           </section>

src/iframe/js/script.js

@@ -101,6 +101,17 @@
     return themeObj;
   }
 
+  function addCustomDisclaimerLink(link) {
+    var p = document.createElement('p');
+    var a = document.createElement('a');
+    a.setAttribute('href', link.href);
+    a.setAttribute('target', '_blank');
+    a.textContent = link.text;
+    p.appendChild(a);
+
+    document.getElementById("disclaimer").appendChild(p);
+  }
+
   function renderContent(theme) {
     document.body.classList.add(theme.className);
 
@@ -192,6 +203,9 @@
         }
 
         renderContent.call(this, getTheme(this.options.theme));
+        if (this.options.custom_disclaimer_link) {
+          addCustomDisclaimerLink(this.options.custom_disclaimer_link);
+        }
 
         var org = getOrg(this.options.org);
         var donateLinks = document.querySelectorAll('a.donate');

src/widget.js

@@ -5,6 +5,7 @@
   if (typeof _bftn_options.delay == "undefined") _bftn_options.delay = 1000;
   if (typeof _bftn_options.debug == "undefined") _bftn_options.debug = false;
   if (typeof _bftn_options.date == "undefined") _bftn_options.date = new Date(2017, 10 /* Zero-based month */, 23);
+  if (typeof _bftn_options.custom_disclaimer_link == "undefined") _bftn_options.custom_disclaimer_link = null;
   if (typeof _bftn_options.viewCookieExpires == "undefined") _bftn_options.viewCookieExpires = 1;
   if (typeof _bftn_options.actionCookieExpires == "undefined") _bftn_options.actionCookieExpires = 7;
   if (typeof _bftn_options.always_show_widget == "undefined") _bftn_options.always_show_widget = false;