Add files.

background.js

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+// This event is fired each time the user updates the text in the omnibox,
+// as long as the extension's keyword mode is still active.
+var FF_MAX_SUGGESTIONS = 20;
+var FF_MAX_MATCHLENGTH = 1000;
+var FF_DEBUGGING = !false;
+var FF_HISTORY = [];
+
+function ffGetDomain(url) {
+  var a        = document.createElement ('a');
+  ;   a.href   = url;
+  return a.hostname;
+}
+
+function ffSearchFor(text, callback) {
+  chrome.tabs.query({}, function(array_of_tabs) {
+    var fuzzy_query = new RegExp(text.split('').join('.*'), 'i');
+    var exact_query = new RegExp(text, 'i');
+    var exact_query_hl = new RegExp("(" + text + ")", 'ig');
+    callback(
+        array_of_tabs.
+        map(function(tab) {
+
+          if(FF_DEBUGGING) { console.debug("tab", tab); }
+
+          switch (true) {
+          case !!tab.title.match(exact_query):
+            tab.score = 40;
+            tab.score += 1 - 1.0 * exact_query.exec(tab.title).index / FF_MAX_MATCHLENGTH;
+            tab.title = tab.title.replace(exact_query_hl, "<match>$1</match>")
+            break;
+          case !!tab.url.match(exact_query):
+            tab.score = 40;
+            tab.score += 1 - 1.0 * exact_query.exec(tab.url).index / FF_MAX_MATCHLENGTH;
+            break;
+          case !!tab.title.match(fuzzy_query):
+            tab.title = tab.title.replace(fuzzy_query, function(m) { return "<match>" + m + "</match>"; })
+            tab.score = 20;
+            tab.score += 1 - 1.0 * tab.title.match(fuzzy_query)[0].length / FF_MAX_MATCHLENGTH;
+            break;
+          case !!tab.url.match(fuzzy_query):
+            tab.score = 20;
+            tab.score += 1 - 1.0 * tab.url.match(fuzzy_query)[0].length / FF_MAX_MATCHLENGTH;
+            break;
+          default:
+            tab.score = 0;
+          }
+
+          if(tab.pinned) { tab.score += 1; }
+
+          return tab;
+        }).
+        filter(function(tab) {
+          return tab.score >= 10;
+        }).
+        sort(function(tab1, tab2) {
+          if(tab1.score < tab2.score) return 1;
+          if(tab1.score > tab2.score) return -1;
+          return 0;
+        }).
+        slice(0, FF_MAX_SUGGESTIONS).
+        map(function(tab) {
+
+          var content = JSON.stringify({tabId: tab.id, windowId: tab.windowId});
+          var desc = tab.title + " <url>" + ffGetDomain(tab.url) + "</url>";
+          if(FF_DEBUGGING) { desc = "score:" + tab.score + " - " + desc; }
+
+          if(tab.status !== "complete") desc = "[" + tab.status + "] " + desc;
+          if(tab.incognito) desc = "[incognito] " + desc;
+          if(tab.pinned)    desc = "[pinned] " + desc;
+          if(tab.audible)   desc = "[audible] " + desc;
+
+          return {content: content, description: desc};
+      })
+    );
+  });
+}
+
+chrome.omnibox.onInputChanged.addListener(
+  function(text, suggest) { ffSearchFor(text, suggest); }
+);
+
+function ffActivateTag(tabId, windowId) {
+  if(tabId) {
+    chrome.tabs.update(tabId, {active: true});
+  }
+  if(windowId) {
+    chrome.windows.update(windowId, {focused: true});
+  }
+}
+
+chrome.omnibox.onInputEntered.addListener(
+  function(text) {
+    if(FF_DEBUGGING) {
+      console.debug("entered:", text);
+      console.debug("history:", FF_HISTORY);
+    }
+
+    var selected = {};
+
+    if(text.length === 0) {
+      if(FF_HISTORY.length >= 2) {
+        selected = FF_HISTORY[FF_HISTORY.length - 2];
+      } else {
+        return;
+      }
+    } else {
+      try {
+        selected = JSON.parse(text);
+      } catch(e) {
+        // User probably typed something but selected the first default option,
+        // i.e., "Run ff command: query"
+        ffSearchFor(text, function(suggestions) {
+          if(suggestions.length === 0) { return; }
+          var selected = JSON.parse(suggestions[0].content);
+          FF_HISTORY.push(selected);
+          ffActivateTag(selected.tabId, selected.windowId)
+        });
+        return;
+      }
+    }
+
+    FF_HISTORY.push(selected);
+    ffActivateTag(selected.tabId, selected.windowId)
+  }
+);

manifest.json

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+{
+  "manifest_version": 2,
+
+  "name": "FF (Fuzzy Finder)",
+  "description": "Omnibox Fuzzy Finder for Chrome. Type 'ff' in your address bar and search for your tabs.",
+  "version": "1.0",
+  "author": "Sina Siadat <siadat@gmail.com>",
+  "homepage_url": "https://github.com/siadat/chrome-ff",
+  "permissions": [ "tabs", "activeTab" ],
+  "background": {
+    "scripts": ["background.js"]
+  },
+  "omnibox": { "keyword" : "ff" },
+  "icons": {
+    "16": "ff.png"
+  }
+}