[web-client] simple theme: move sources to client/simple/src

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

client/simple/src/js/main/00_toolkit.js

@@ -0,0 +1,165 @@
+/**
+ * @license
+ * (C) Copyright Contributors to the SearXNG project.
+ * (C) Copyright Contributors to the searx project (2014 - 2021).
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+window.searxng = (function (w, d) {
+
+  'use strict';
+
+  // not invented here toolkit with bugs fixed elsewhere
+  // purposes : be just good enough and as small as possible
+
+  // from https://plainjs.com/javascript/events/live-binding-event-handlers-14/
+  if (w.Element) {
+    (function (ElementPrototype) {
+      ElementPrototype.matches = ElementPrototype.matches ||
+      ElementPrototype.matchesSelector ||
+      ElementPrototype.webkitMatchesSelector ||
+      ElementPrototype.msMatchesSelector ||
+      function (selector) {
+        var node = this, nodes = (node.parentNode || node.document).querySelectorAll(selector), i = -1;
+        while (nodes[++i] && nodes[i] != node);
+        return !!nodes[i];
+      };
+    })(Element.prototype);
+  }
+
+  function callbackSafe (callback, el, e) {
+    try {
+      callback.call(el, e);
+    } catch (exception) {
+      console.log(exception);
+    }
+  }
+
+  var searxng = window.searxng || {};
+
+  searxng.on = function (obj, eventType, callback, useCapture) {
+    useCapture = useCapture || false;
+    if (typeof obj !== 'string') {
+      // obj HTMLElement, HTMLDocument
+      obj.addEventListener(eventType, callback, useCapture);
+    } else {
+      // obj is a selector
+      d.addEventListener(eventType, function (e) {
+        var el = e.target || e.srcElement, found = false;
+        while (el && el.matches && el !== d && !(found = el.matches(obj))) el = el.parentElement;
+        if (found) callbackSafe(callback, el, e);
+      }, useCapture);
+    }
+  };
+
+  searxng.ready = function (callback) {
+    if (document.readyState != 'loading') {
+      callback.call(w);
+    } else {
+      w.addEventListener('DOMContentLoaded', callback.bind(w));
+    }
+  };
+
+  searxng.http = function (method, url, data = null) {
+    return new Promise(function (resolve, reject) {
+      try {
+        var req = new XMLHttpRequest();
+        req.open(method, url, true);
+        req.timeout = 20000;
+
+        // On load
+        req.onload = function () {
+          if (req.status == 200) {
+            resolve(req.response, req.responseType);
+          } else {
+            reject(Error(req.statusText));
+          }
+        };
+
+        // Handle network errors
+        req.onerror = function () {
+          reject(Error("Network Error"));
+        };
+
+        req.onabort = function () {
+          reject(Error("Transaction is aborted"));
+        };
+
+        req.ontimeout = function () {
+          reject(Error("Timeout"));
+        }
+
+        // Make the request
+        if (data) {
+          req.send(data)
+        } else {
+          req.send();
+        }
+      } catch (ex) {
+        reject(ex);
+      }
+    });
+  };
+
+  searxng.loadStyle = function (src) {
+    var path = searxng.settings.theme_static_path + "/" + src,
+      id = "style_" + src.replace('.', '_'),
+      s = d.getElementById(id);
+    if (s === null) {
+      s = d.createElement('link');
+      s.setAttribute('id', id);
+      s.setAttribute('rel', 'stylesheet');
+      s.setAttribute('type', 'text/css');
+      s.setAttribute('href', path);
+      d.body.appendChild(s);
+    }
+  };
+
+  searxng.loadScript = function (src, callback) {
+    var path = searxng.settings.theme_static_path + "/" + src,
+      id = "script_" + src.replace('.', '_'),
+      s = d.getElementById(id);
+    if (s === null) {
+      s = d.createElement('script');
+      s.setAttribute('id', id);
+      s.setAttribute('src', path);
+      s.onload = callback;
+      s.onerror = function () {
+        s.setAttribute('error', '1');
+      };
+      d.body.appendChild(s);
+    } else if (!s.hasAttribute('error')) {
+      try {
+        callback.apply(s, []);
+      } catch (exception) {
+        console.log(exception);
+      }
+    } else {
+      console.log("callback not executed : script '" + path + "' not loaded.");
+    }
+  };
+
+  searxng.insertBefore = function (newNode, referenceNode) {
+    referenceNode.parentNode.insertBefore(newNode, referenceNode);
+  };
+
+  searxng.insertAfter = function (newNode, referenceNode) {
+    referenceNode.parentNode.insertAfter(newNode, referenceNode.nextSibling);
+  };
+
+  searxng.on('.close', 'click', function () {
+    this.parentNode.classList.add('invisible');
+  });
+
+  function getEndpoint () {
+    for (var className of d.getElementsByTagName('body')[0].classList.values()) {
+      if (className.endsWith('_endpoint')) {
+        return className.split('_')[0];
+      }
+    }
+    return '';
+  }
+
+  searxng.endpoint = getEndpoint();
+
+  return searxng;
+})(window, document);