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'use strict';

var { Services } = require("services");
var prefService = require("preferences-service");
var tabs = require("tabs");
var clipboard = require("clipboard");
var {GM_xmlhttpRequester} = require("GM_xmlhttpRequester");

const NS_XHTML = "http://www.w3.org/1999/xhtml";

function GM_API(aScript, aURL, aWinID, aSafeWin, aUnsafeContentWin, aChromeWin) {
  var document = aSafeWin.document;
  var windowID = aWinID;
  var xhr = new GM_xmlhttpRequester(aUnsafeContentWin, aURL, aScript);

  this.GM_addStyle = function GM_addStyle(css) {
    var head = document.getElementsByTagName("head")[0];
    var style = document.createElement("style");
    if (head) {
      style.textContent = css;
      style.type = "text/css";
      head.appendChild(style);
    }
    return style;
  };

  // TODO: use simple storage
  this.GM_getValue = function GM_getValue(name, defVal) {
    return prefService.get(aScript.prefPrefix + name, defVal);
  };
  this.GM_setValue = function GM_setValue(name, val) {
    return prefService.set(aScript.prefPrefix + name, val);
  };

  this.GM_safeHTMLParser = function GM_safeHTMLParser(aHTMLStr) {
    //if (!GM_apiLeakCheck("GM_safeHTMLParser")) return;
    let doc = document.implementation.createDocument(NS_XHTML, "html", null);
    let body = document.createElementNS(NS_XHTML, "body");
    doc.documentElement.appendChild(body);
    body.appendChild(Services.suhtml.parseFragment(aHTMLStr, false, null, body));
    return doc;
  }

  this.GM_xmlhttpRequest = function GM_xmlhttpRequest() {
    //if (!GM_apiLeakCheck("GM_xmlhttpRequest")) return;
    return xhr.contentStartRequest.apply(xhr, arguments);
  };
};
exports.GM_API = GM_API;

GM_API.prototype.GM_openInTab =
    function GM_openInTab(aURL, aLoadInBackground, aReuse) {
  if (aReuse) {
    for each (var tab in tabs) {
      if (tab.url == aURL) {
        if (!aLoadInBackground)
          tab.activate();
        return;
      }
    }
  }

  tabs.open({
    url: aURL,
    inBackground: aLoadInBackground
  });
};

GM_API.prototype.GM_setClipboard = function GM_setClipboard(aData, aType) {
  return clipboard.set(aData, aType);
};

GM_API.prototype.GM_generateUUID = function GM_generateUUID() (
    Services.uuid.generateUUID().toString());

GM_API.prototype.GM_registerMenuCommand = function() {};