[search addon] Make compatible with Trusted Types

https://web.dev/trusted-types/ doesn't allow string innerHTML assignments. This change avoids it by using DOM instead.

Author: vrana

addon/search/search.js

@@ -189,18 +189,54 @@
     if (state.annotate) { state.annotate.clear(); state.annotate = null; }
   });}
 
+  function el(tag, attrs, content) {
+    var element = document.createElement(tag);
+    for (var key in attrs) {
+      element[key] = attrs[key];
+    }
+    for (var i = 2; i < arguments.length; i++) {
+      var child = arguments[i]
+      element.appendChild(typeof child == "string" ? document.createTextNode(child) : child);
+    }
+    return element;
+  }
 
   function getQueryDialog(cm)  {
-    return '<span class="CodeMirror-search-label">' + cm.phrase("Search:") + '</span> <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">' + cm.phrase("(Use /re/ syntax for regexp search)") + '</span>';
+    var fragment = document.createDocumentFragment();
+    fragment.appendChild(el('span', {className: 'CodeMirror-search-label'}, cm.phrase("Search:")));
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('input', {type: 'text', 'style': 'width: 10em', className: 'CodeMirror-search-field'}));
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('span', {style: 'color: #888', className: 'CodeMirror-search-hint'}, cm.phrase("(Use /re/ syntax for regexp search)")));
+    return fragment;
   }
   function getReplaceQueryDialog(cm) {
-    return ' <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">' + cm.phrase("(Use /re/ syntax for regexp search)") + '</span>';
+    var fragment = document.createDocumentFragment();
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('input', {type: 'text', 'style': 'width: 10em', className: 'CodeMirror-search-field'}));
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('span', {style: 'color: #888', className: 'CodeMirror-search-hint'}, cm.phrase("(Use /re/ syntax for regexp search)")));
+    return fragment;
   }
   function getReplacementQueryDialog(cm) {
-    return '<span class="CodeMirror-search-label">' + cm.phrase("With:") + '</span> <input type="text" style="width: 10em" class="CodeMirror-search-field"/>';
+    var fragment = document.createDocumentFragment();
+    fragment.appendChild(el('span', {className: 'CodeMirror-search-label'}, cm.phrase("With:")));
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('input', {type: 'text', 'style': 'width: 10em', className: 'CodeMirror-search-field'}));
+    return fragment;
   }
   function getDoReplaceConfirm(cm) {
-    return '<span class="CodeMirror-search-label">' + cm.phrase("Replace?") + '</span> <button>' + cm.phrase("Yes") + '</button> <button>' + cm.phrase("No") + '</button> <button>' + cm.phrase("All") + '</button> <button>' + cm.phrase("Stop") + '</button> ';
+    var fragment = document.createDocumentFragment();
+    fragment.appendChild(el('span', {className: 'CodeMirror-search-label'}, cm.phrase("Replace?")));
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('button', {}, cm.phrase("Yes")));
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('button', {}, cm.phrase("No")));
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('button', {}, cm.phrase("All")));
+    fragment.appendChild(document.createTextNode(' '));
+    fragment.appendChild(el('button', {}, cm.phrase("Stop")));
+    return fragment;
   }
 
   function replaceAll(cm, query, text) {
@@ -217,8 +253,10 @@
   function replace(cm, all) {
     if (cm.getOption("readOnly")) return;
     var query = cm.getSelection() || getSearchState(cm).lastQuery;
-    var dialogText = '<span class="CodeMirror-search-label">' + (all ? cm.phrase("Replace all:") : cm.phrase("Replace:")) + '</span>';
-    dialog(cm, dialogText + getReplaceQueryDialog(cm), dialogText, query, function(query) {
+    var fragment = document.createDocumentFragment();
+    fragment.appendChild(el('span', {className: 'CodeMirror-search-label'}, (all ? cm.phrase("Replace all:") : cm.phrase("Replace:"))));
+    fragment.appendChild(getReplaceQueryDialog(cm));
+    dialog(cm, fragment, dialogText, query, function(query) {
       if (!query) return;
       query = parseQuery(query);
       dialog(cm, getReplacementQueryDialog(cm), cm.phrase("Replace with:"), "", function(text) {