1 files changed, 50 insertions, 6 deletions
diff --git a/chrome/renderer/resources/greasemonkey_api.js b/chrome/renderer/resources/greasemonkey_api.js
index 2d791dd..57fa252 100644
--- a/chrome/renderer/resources/greasemonkey_api.js
+++ b/chrome/renderer/resources/greasemonkey_api.js
@@ -1,20 +1,57 @@
 // 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) {
-  throw new Error("not implemented.");
+  var value = localStorage.getItem(STORAGE_NS + name);
+  return value ? value : defaultValue;
 }
 
 function GM_setValue(name, value) {
-  throw new Error("not implemented.");
+  // 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) {
-  throw new Error("not implemented.");
+  localStorage.removeItem(STORAGE_NS + name);
 }
 
 function GM_listValues() {
-  throw new Error("not implemented.");
+  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) {
@@ -26,7 +63,14 @@ function GM_getResourceText(resourceName) {
 }
 
 function GM_addStyle(css) {
-  throw new Error("not implemented.");
+  var head = document.getElementsByTagName("head")[0];
+  if (!head) {
+    return;
+  }
+  var style = document.createElement("style");
+  style.type = "text/css";
+  style.innerHTML = css;
+  head.appendChild(style);
 }
 
 function GM_xmlhttpRequest(details) {
@@ -39,7 +83,7 @@ function GM_registerMenuCommand(commandName, commandFunc, accelKey,
 }
 
 function GM_openInTab(url) {
-  throw new Error("not implemented.");
+  window.open(url, "");
 }
 
 function GM_log(message) {