Migrate assets to use Webpacker

app/javascript/src/javascripts/dtext.js

@@ -0,0 +1,68 @@
+let Dtext = {};
+
+Dtext.initialize_all = function() {
+  Dtext.initialize_links();
+  Dtext.initialize_expandables();
+}
+
+Dtext.initialize_links = function() {
+  $(".simple_form .dtext-preview").hide();
+  $(".simple_form input[value=Preview]").click(Dtext.click_button);
+}
+
+Dtext.initialize_expandables = function($parent) {
+  $parent = $parent || $(document);
+  $parent.find(".expandable-content").hide();
+  $parent.find(".expandable-button").click(function(e) {
+    var button = $(this);
+    button.parent().next().fadeToggle("fast");
+    if (button.val() === "Show") {
+      button.val("Hide");
+    } else {
+      button.val("Show");
+    }
+  });
+}
+
+Dtext.call_preview = function(e, $button, $input, $preview) {
+  $button.val("Edit");
+  $input.hide();
+  $preview.text("Loading...").fadeIn("fast");
+  $.ajax({
+    type: "post",
+    url: "/dtext_preview",
+    data: {
+      body: $input.val()
+    },
+    success: function(data) {
+      $preview.html(data).fadeIn("fast");
+      Dtext.initialize_expandables($preview);
+    }
+  });
+}
+
+Dtext.call_edit = function(e, $button, $input, $preview) {
+  $button.val("Preview");
+  $preview.hide();
+  $input.slideDown("fast");
+}
+
+Dtext.click_button = function(e) {
+  var $button = $(e.target);
+  var $input = $("#" + $button.data("input-id"));
+  var $preview = $("#" + $button.data("preview-id"));
+
+  if ($button.val().match(/preview/i)) {
+    Dtext.call_preview(e, $button, $input, $preview);
+  } else {
+    Dtext.call_edit(e, $button, $input, $preview);
+  }
+
+  e.preventDefault();
+}
+
+$(document).ready(function() {
+  Dtext.initialize_all();
+});
+
+export default Dtext