Merge pull request #2 from Dbz/right-click-menus

Right click menus

Former-commit-id: baa864a

Author: Dbz

.DS_Store

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+This is a chrome browser extension that allows the user to view a cached version of the current webpage. Set your primary cache as Google Cache, Wayback Machine, or Coral CDN. If what you're looking for isn't found, it'll cycle through the other caches until it finds what you're looking for. There are three ways to use WebCache:
+
+1. Click the extension button to view the cached version of the web page
+
+2. Access the cached webpage through the right click menu (enable this setting in the options page)
+
+3. Auto-detect when a webpage is down, and fetch the cached version (enable this setting in the options page)
+
+Source code is available here: https://github.com/Dbz/WebCache
+
+PLEASE REPORT ISSUES/FEATURE REQUESTS HERE: https://github.com/Dbz/WebCache/issues
+
+
+Change Log:
+
+V 4.0.0
+--------
+
+ - Added right click menu option to view the cached version of a web page
+ - Re-wrote the HTML/CSS of the options page
+ - Refactoring of the code base
+
+
+V 3.5.6
+---------
+
+ - Fixed a bug where first time installers couldn't use the extension before visiting the options page
+
+
+Google Cache, Wayback Machine, Coral CDN, cache

Chrome Store/ChromeStore.md

@@ -1,11 +1,35 @@
-WebCache
-========
+#WebCache
 
-This is a chrome browser extension that allows the user to view a cached version of the current webpage
+This is a chrome browser extension that allows the user to view a cached version of the current web page.
+This is useful if the website:
 
-Install this extension here: https://chrome.google.com/webstore/detail/webcache/cmmlgikpahieigpcclckfmhnchdlfnjd
+1. DDOS attacked (Too much Reddit traffic)
+1. Taken down for maintenance
+1. No longer exists
+1. Has older versions with different content
 
-Images by Jason Rainbows
+Install this extension [here](https://chrome.google.com/webstore/detail/webcache/cmmlgikpahieigpcclckfmhnchdlfnjd)
 
+#Feedback
 
-v3.5.6
+Please report any broken functionality or feature requests [here](https://github.com/Dbz/WebCache/issues).
+
+If you would like to rate the chrome extension, please do so [here](https://chrome.google.com/webstore/detail/webcache/cmmlgikpahieigpcclckfmhnchdlfnjd/reviews).
+
+
+#Contributing
+
+I explicitly welcome contributions from people who have never contributed to open-source before: we were all beginners once!
+I can help build on a partially working pull request with the aim of getting it merged.
+I am also actively seeking to diversify our contributors and especially welcome contributions from women from all backgrounds and people of color. <sup>[1](#References)</sup>
+
+If you're interested in contributing, fork this repo and create a pull request.
+Please follow the [JavaScript Style Guide](https://github.com/airbnb/javascript).
+
+##Version
+
+v4.0.0
+
+##References
+
+  1. I used and modified [Homebrew's](https://github.com/Homebrew/brew#contributing) welcoming contributing section.

README.md

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+var CONTEXT_HASH = {
+  "google-cache":     "http://webcache.googleusercontent.com/search?q=cache:",
+  "wayback-machine":  "http://web.archive.org/web/*/",
+  "coral-cdn":        ".nyud.net"
+};
+
+function formUrl(context, url) {
+  var contextUrl = CONTEXT_HASH[context];
+  var isHTTPS    = url.substring(0, 6) === "https:";
+
+  // Google and Wayback Machine
+  if(context !== "coral-cdn") {
+    return contextUrl + (isHTTPS ? url.substr(8) : url.substr(7));
+  } else { // Coral CDN
+    if(url.slice(-1) === "/") {
+      return url.substring(0, url.length - 1) + contextUrl;
+    } else {
+      return url + contextUrl;
+    }
+  }
+}
+
+function redirectToCachedUrl(info, tab) {
+  chrome.tabs.update(tab.id, { url: formUrl(info.menuItemId, info.pageUrl) });
+}
+
+// Create context menu caches
+function createContextMenu(cache) {
+  var saveObj = {};
+  var create_properties = {
+    id: cache,
+    title: "Open page with " + cache.split("-").join(" "),
+    contexts: ["page"]
+  };
+  saveObj[cache] = true;
+
+  chrome.contextMenus.create(create_properties);
+  chrome.storage.sync.set(saveObj);
+}
+
+// Load Context Menus on Startup
+chrome.storage.sync.get(Object.keys(CONTEXT_HASH), function(results) {
+  Object.keys(results).forEach(function(cache) {
+    if(!!results[cache]) {
+      createContextMenu(cache);
+    }
+  });
+});
+
+chrome.contextMenus.onClicked.addListener(redirectToCachedUrl);
+