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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// -----------------------------------------------------------------------------
// NOTE: If you change this file you need to touch renderer_resources.grd to
// have your change take effect.
// -----------------------------------------------------------------------------
// Implementation of the Greasemonkey API, see:
// http://wiki.greasespot.net/Greasemonkey_Manual:APIs
const MIN_INT_32 = -0x80000000;
const MAX_INT_32 = 0x7FFFFFFF;
// Prefix for user script values that are stored in localStorage.
const STORAGE_NS = "__userscript__.";
function GM_getValue(name, defaultValue) {
var value = localStorage.getItem(STORAGE_NS + name);
return value ? value : defaultValue;
}
function GM_setValue(name, value) {
// The values for GM_getValue() and GM_setValue() can only be boolean,
// strings, or 32 bit integers. See the setPrefs function in:
// http://greasemonkey.devjavu.com/browser/trunk/src/chrome/chromeFiles/content/prefmanager.js
var goodType = false;
switch (typeof(value)) {
case "string":
case "boolean":
goodType = true;
break;
case "number":
// Note that "value % 1 == 0" checks that the number is not a float.
if (value % 1 == 0 && value >= MIN_INT_32 && value <= MAX_INT_32) {
goodType = true;
}
break;
}
if (!goodType) {
throw new Error("Unsupported type for GM_setValue. Supported types " +
"are: string, bool, and 32 bit integers.");
}
localStorage.setItem(STORAGE_NS + name, value);
}
function GM_deleteValue(name) {
localStorage.removeItem(STORAGE_NS + name);
}
function GM_listValues() {
var values = [];
for (var i = 0; i < localStorage.length; i++) {
var key = localStorage.key(i);
if (key.indexOf(STORAGE_NS) == 0) {
key = key.substring(STORAGE_NS.length);
values.push(key);
}
}
return values;
}
function GM_getResourceURL(resourceName) {
throw new Error("not implemented.");
}
function GM_getResourceText(resourceName) {
throw new Error("not implemented.");
}
function GM_addStyle(css) {
var parent = document.getElementsByTagName("head")[0];
if (!parent) {
parent = document.documentElement;
}
var style = document.createElement("style");
style.type = "text/css";
var textNode = document.createTextNode(css);
style.appendChild(textNode);
parent.appendChild(style);
}
function GM_xmlhttpRequest(details) {
function setupEvent(xhr, url, eventName, callback) {
xhr[eventName] = function () {
var isComplete = xhr.readyState == 4;
var responseState = {
responseText: xhr.responseText,
readyState: xhr.readyState,
responseHeaders: isComplete ? xhr.getAllResponseHeaders() : "",
status: isComplete ? xhr.status : 0,
statusText: isComplete ? xhr.statusText : "",
finalUrl: isComplete ? url : ""
};
callback(responseState);
};
}
var xhr = new XMLHttpRequest();
var eventNames = ["onload", "onerror", "onreadystatechange"];
for (var i = 0; i < eventNames.length; i++ ) {
var eventName = eventNames[i];
if (eventName in details) {
setupEvent(xhr, details.url, eventName, details[eventName]);
}
}
xhr.open(details.method, details.url);
if (details.overrideMimeType) {
xhr.overrideMimeType(details.overrideMimeType);
}
if (details.headers) {
for (var header in details.headers) {
xhr.setRequestHeader(header, details.headers[header]);
}
}
xhr.send(details.data ? details.data : null);
}
function GM_registerMenuCommand(commandName, commandFunc, accelKey,
accelModifiers, accessKey) {
throw new Error("not implemented.");
}
function GM_openInTab(url) {
window.open(url, "");
}
function GM_log(message) {
window.console.log(message);
}
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