added page action example

chill-out/README.md

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+# chill-out

chill-out/background.js

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+var DELAY = 0.1;
+var CATGIFS = "http://chilloutandwatchsomecatgifs.com/";
+
+/*
+Start-stop for the currently active tab, whenever this script is run.
+*/
+chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
+  startStopAlarm(tabs[0].id);
+});
+
+/*
+Start-stop for the currently active tab, whenever the user navigates.
+*/
+chrome.tabs.onUpdated.addListener(function (tabId, changeInfo, tab) {
+  if (!changeInfo.url) {
+    return;
+  }
+  chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
+    if (tabId == tabs[0].id) {
+      startStopAlarm(tabId);
+    }
+  });
+});
+
+/*
+Start-stop for the currently active tab, whenever a new tab becomes active.
+*/
+chrome.tabs.onActivated.addListener(function (activeInfo) {
+  startStopAlarm(activeInfo.tabId);
+});
+
+/*
+Start-stop: clear all alarms,
+then set a new alarm for the given tab.
+*/
+function startStopAlarm(tabId) {
+  chrome.pageAction.hide(tabId);
+  chrome.alarms.clearAll();
+  chrome.tabs.get(tabId, function(tab) {
+    if (tab.url != CATGIFS) {
+      chrome.alarms.create(tabId, {delayInMinutes: DELAY});
+    }
+  });
+}
+
+/*
+On alarm, show the page action.
+*/
+chrome.alarms.onAlarm.addListener(function(alarm) {
+  chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
+    chrome.pageAction.show(alarm.name);
+  });
+});
+
+/*
+On page action click, navigate the corresponding tab to the cat gifs.
+*/
+chrome.pageAction.onClicked.addListener(function () {
+  chrome.tabs.update({url: CATGIFS});
+});

chill-out/button/LICENSE

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+The icon "chillout.png" is taken from the IconBeast Lite iconset, and used under the terms of its license (http://www.iconbeast.com/faq/), with a link back to the website: http://www.iconbeast.com/free/.

chill-out/manifest.json

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+{
+
+  "manifest_version": 2,
+  "name": "chillout-page-action",
+  "version": "1.0",
+
+  "applications": {
+    "gecko": {
+      "id": "chillout-page-action@mozilla.org"
+    }
+  },
+
+  "permissions": [
+    "tabs"
+  ],  
+
+  "page_action": {
+    "default_icon": "button/chillout.png",
+    "default_title": "Chill out"
+  },
+  
+  "background": {
+    "scripts": ["background.js"]
+  }
+
+}