From 2cff5b87b52fa80be8c9cb650724e8e3475e8a97 Mon Sep 17 00:00:00 2001
From: Basil Crow <me@basilcrow.com>
Date: Mon, 8 May 2023 11:11:48 -0700
Subject: [PATCH] Revert "JENKINS-70922 Remove Prototype Ajax.Request usage
 from select.js"

This reverts commit 13661a897dd24840cd102a283290faa2b3833acf.
---
 .../main/resources/lib/form/select/select.js  | 76 ++++++++-----------
 war/.eslintrc.js                              |  1 -
 .../main/webapp/scripts/hudson-behavior.js    | 13 ----
 3 files changed, 30 insertions(+), 60 deletions(-)

diff --git a/core/src/main/resources/lib/form/select/select.js b/core/src/main/resources/lib/form/select/select.js
index 315d0c4ace93..78265d20b69a 100644
--- a/core/src/main/resources/lib/form/select/select.js
+++ b/core/src/main/resources/lib/form/select/select.js
@@ -53,62 +53,46 @@ function updateListBox(listBox, url, config) {
 
     var selectionSet = false; // is the selection forced by the server?
     var possibleIndex = null; // if there's a new option that matches the current value, remember its index
-    rsp.json().then((result) => {
-      var opts = result.values;
-      for (var i = 0; i < opts.length; i++) {
-        l.options[i] = new Option(opts[i].name, opts[i].value);
-        if (opts[i].selected) {
-          l.selectedIndex = i;
-          selectionSet = true;
-        }
-        if (opts[i].value === currentSelection) {
-          possibleIndex = i;
-        }
+    var opts = JSON.parse(rsp.responseText).values;
+    for (var i = 0; i < opts.length; i++) {
+      l.options[i] = new Option(opts[i].name, opts[i].value);
+      if (opts[i].selected) {
+        l.selectedIndex = i;
+        selectionSet = true;
       }
-
-      // if no value is explicitly selected by the server, try to select the same value
-      if (!selectionSet && possibleIndex != null) {
-        l.selectedIndex = possibleIndex;
+      if (opts[i].value == currentSelection) {
+        possibleIndex = i;
       }
+    }
 
-      if (originalOnSuccess !== undefined) {
-        originalOnSuccess(rsp);
-      }
-    });
+    // if no value is explicitly selected by the server, try to select the same value
+    if (!selectionSet && possibleIndex != null) {
+      l.selectedIndex = possibleIndex;
+    }
+
+    if (originalOnSuccess !== undefined) {
+      originalOnSuccess(rsp);
+    }
   };
   config.onFailure = function (rsp) {
     l.classList.remove("select-ajax-pending");
-    rsp.text().then((responseText) => {
-      status.innerHTML = responseText;
-      if (status.firstElementChild) {
-        status.firstElementChild.setAttribute("data-select-ajax-error", "true");
-      }
-      Behaviour.applySubtree(status);
-      // deleting values can result in the data loss, so let's not do that unless instructed
-      var header = rsp.headers.get("X-Jenkins-Select-Error");
-      if (header && "clear" === header.toLowerCase()) {
-        // clear the contents
-        while (l.length > 0) {
-          l.options[0] = null;
-        }
+    status.innerHTML = rsp.responseText;
+    if (status.firstElementChild) {
+      status.firstElementChild.setAttribute("data-select-ajax-error", "true");
+    }
+    Behaviour.applySubtree(status);
+    // deleting values can result in the data loss, so let's not do that unless instructed
+    var header = rsp.getResponseHeader("X-Jenkins-Select-Error");
+    if (header && "clear" === header.toLowerCase()) {
+      // clear the contents
+      while (l.length > 0) {
+        l.options[0] = null;
       }
-    });
+    }
   };
 
   l.classList.add("select-ajax-pending");
-  fetch(url, {
-    method: "post",
-    headers: crumb.wrap({
-      "Content-Type": "application/x-www-form-urlencoded",
-    }),
-    body: objectToUrlFormEncoded(config.parameters),
-  }).then((response) => {
-    if (response.ok) {
-      config.onSuccess(response);
-    } else {
-      config.onFailure(response);
-    }
-  });
+  new Ajax.Request(url, config);
 }
 
 Behaviour.specify("SELECT.select", "select", 1000, function (e) {
diff --git a/war/.eslintrc.js b/war/.eslintrc.js
index cb93245fb38f..223b360aca8d 100644
--- a/war/.eslintrc.js
+++ b/war/.eslintrc.js
@@ -49,7 +49,6 @@ module.exports = {
     makeButton: "readonly",
     notificationBar: "readonly",
     object: "readonly",
-    objectToUrlFormEncoded: "readonly",
     onSetupWizardInitialized: "readonly",
     Prototype: "readonly",
     refillOnChange: "readonly",
diff --git a/war/src/main/webapp/scripts/hudson-behavior.js b/war/src/main/webapp/scripts/hudson-behavior.js
index eb42f1d844a3..78357e084dd8 100644
--- a/war/src/main/webapp/scripts/hudson-behavior.js
+++ b/war/src/main/webapp/scripts/hudson-behavior.js
@@ -257,19 +257,6 @@ var FormChecker = {
   },
 };
 
-function objectToUrlFormEncoded(parameters) {
-  // https://stackoverflow.com/a/37562814/4951015
-  // Code could be simplified if support for HTMLUnit is dropped
-  // body: new URLSearchParams(parameters) is enough then, but it doesn't work in HTMLUnit currently
-  let formBody = [];
-  for (const property in parameters) {
-    const encodedKey = encodeURIComponent(property);
-    const encodedValue = encodeURIComponent(parameters[property]);
-    formBody.push(encodedKey + "=" + encodedValue);
-  }
-  return formBody.join("&");
-}
-
 /**
  * Detects if http2 protocol is enabled.
  */