extensions/renderer/resources/greasemonkey_api.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // -----------------------------------------------------------------------------
   6 // NOTE: If you change this file you need to touch renderer_resources.grd to
   7 // have your change take effect.
   8 // -----------------------------------------------------------------------------
   9
  10 // Partial implementation of the Greasemonkey API, see:
  11 // http://wiki.greasespot.net/Greasemonkey_Manual:APIs
  12
  13 function GM_addStyle(css) {
  14   var parent = document.getElementsByTagName("head")[0];
  15   if (!parent) {
  16     parent = document.documentElement;
  17   }
  18   var style = document.createElement("style");
  19   style.type = "text/css";
  20   var textNode = document.createTextNode(css);
  21   style.appendChild(textNode);
  22   parent.appendChild(style);
  23 }
  24
  25 function GM_xmlhttpRequest(details) {
  26   function setupEvent(xhr, url, eventName, callback) {
  27     xhr[eventName] = function () {
  28       var isComplete = xhr.readyState == 4;
  29       var responseState = {
  30         responseText: xhr.responseText,
  31         readyState: xhr.readyState,
  32         responseHeaders: isComplete ? xhr.getAllResponseHeaders() : "",
  33         status: isComplete ? xhr.status : 0,
  34         statusText: isComplete ? xhr.statusText : "",
  35         finalUrl: isComplete ? url : ""
  36       };
  37       callback(responseState);
  38     };
  39   }
  40
  41   var xhr = new XMLHttpRequest();
  42   var eventNames = ["onload", "onerror", "onreadystatechange"];
  43   for (var i = 0; i < eventNames.length; i++ ) {
  44     var eventName = eventNames[i];
  45     if (eventName in details) {
  46       setupEvent(xhr, details.url, eventName, details[eventName]);
  47     }
  48   }
  49
  50   xhr.open(details.method, details.url);
  51
  52   if (details.overrideMimeType) {
  53     xhr.overrideMimeType(details.overrideMimeType);
  54   }
  55   if (details.headers) {
  56     for (var header in details.headers) {
  57       xhr.setRequestHeader(header, details.headers[header]);
  58     }
  59   }
  60   xhr.send(details.data ? details.data : null);
  61 }
  62
  63 function GM_openInTab(url) {
  64   window.open(url, "");
  65 }
  66
  67 function GM_log(message) {
  68   window.console.log(message);
  69 }
  70
  71 (function() {
  72   function generateGreasemonkeyStub(name) {
  73     return function() {
  74       console.log("%s is not supported.", name);
  75     };
  76   }
  77
  78   var apis = ["GM_getValue", "GM_setValue", "GM_registerMenuCommand"];
  79   for (var i = 0, api; api = apis[i]; i++) {
  80     window[api] = generateGreasemonkeyStub(api);
  81   }
  82 })();