Implement counter which closes #33, thanks to @jfouchard

README.md

@@ -136,6 +136,14 @@ There is no known way to intercept and set an event listener for a desktop notif
 
 However, this would cause issues when the command line argument `target` is set to a external page which is not a single page app, because clicking on hyperlinks and switching pages would naturally change the `document.title`. Hence, `--badge` is an optional command argument that can be set by the user if the side effect of this workaround is understood.
 
+#### [counter[
+
+```
+--counter
+```
+
+Use a counter that persists even with window focus for the application badge for sites that use an "(X)" format counter in the page title (i.e. GMail).  Same limitations as the badge option (above).
+
 #### [width]
 
 ```

app/main.js

@@ -71,11 +71,26 @@ app.on('ready', function () {
         mainWindow.webContents.send('params', JSON.stringify(appArgs));
     });
 
-    mainWindow.on('page-title-updated', function () {
-        if (isOSX() && !mainWindow.isFocused()) {
+    if (appArgs.badge || appArgs.counter) {
+        mainWindow.on('page-title-updated', function () {
+
+            if (!isOSX() || mainWindow.isFocused()) {
+                return;
+            }
+
+            if (appArgs.counter) {
+                var itemCountRegex = /[\(](\d*?)[\)]/;
+                var match = itemCountRegex.exec(mainWindow.getTitle());
+                console.log(mainWindow.getTitle(), match);
+                if (match) {
+                    app.dock.setBadge(match[1]);
+                }
+                return;
+            }
+
             app.dock.setBadge('●');
-        }
-    });
+        });
+    }
 
     mainWindow.webContents.on('new-window', function (event, urlToGo) {
         if (linkIsInternal(appArgs.targetUrl, urlToGo)) {
@@ -88,7 +103,10 @@ app.on('ready', function () {
     mainWindow.loadURL(appArgs.targetUrl);
     // if the window is focused, clear the badge
     mainWindow.on('focus', function () {
-        if (isOSX()) {
+        if (!isOSX()) {
+            return;
+        }
+        if (appArgs.badge || appArgs.counter) {
             app.dock.setBadge('');
         }
     });

src/buildApp.js

@@ -31,7 +31,7 @@ function buildApp(options, callback) {
 
     async.waterfall([
         callback => {
-            copyPlaceholderApp(options.dir, tmpPath, options.name, options.targetUrl, options.badge, options.width, options.height, options.userAgent, callback);
+            copyPlaceholderApp(options.dir, tmpPath, options.name, options.targetUrl, options.badge, options.counter, options.width, options.height, options.userAgent, callback);
         },
 
         (tempDir, callback) => {
@@ -61,12 +61,13 @@ function buildApp(options, callback) {
  * @param {string} name
  * @param {string} targetURL
  * @param {boolean} badge
+ * @param {boolean} counter
  * @param {number} width
  * @param {number} height
  * @param {string} userAgent
  * @param {tempDirCallback} callback
  */
-function copyPlaceholderApp(srcAppDir, tempDir, name, targetURL, badge, width, height, userAgent, callback) {
+function copyPlaceholderApp(srcAppDir, tempDir, name, targetURL, badge, counter, width, height, userAgent, callback) {
     const loadedPackageJson = packageJson;
     copy(srcAppDir, tempDir, function(error) {
         if (error) {
@@ -79,6 +80,7 @@ function copyPlaceholderApp(srcAppDir, tempDir, name, targetURL, badge, width, h
             name: name,
             targetUrl: targetURL,
             badge: badge,
+            counter: counter,
             width: width,
             height: height,
             userAgent: userAgent,

src/cli.js

@@ -24,6 +24,7 @@ function main(program) {
                 program.conceal,
                 program.icon,
                 program.badge,
+                program.counter,
                 program.width,
                 program.height,
                 program.userAgent,
@@ -59,6 +60,7 @@ if (require.main === module) {
         .option('-o, --overwrite', 'if output directory for a platform already exists, replaces it rather than skipping it, defaults to false')
         .option('-c, --conceal', 'packages the source code within your app into an archive, defaults to false, see http://electron.atom.io/docs/v0.36.0/tutorial/application-packaging/')
         .option('-b, --badge', 'if the target app should show badges in the dock on receipt of desktop notifications (OSX only), defaults to false')
+        .option('--counter', 'if the target app should use a persistant counter badge in the dock (OSX only), defaults to false')
         .option('-i, --icon <value>', 'the icon file to use as the icon for the app (should be a .icns file on OSX)')
         .option('-w, --width <value>', 'set window width, defaults to 1280px', parseInt)
         .option('-h, --height <value>', 'set window height, defaults to 800px', parseInt)

src/options.js

@@ -20,6 +20,7 @@ function optionsFactory(name,
                         conceal = false,
                         icon,
                         badge = false,
+                        counter = false,
                         width = 1280,
                         height = 800,
                         userAgent,
@@ -59,6 +60,7 @@ function optionsFactory(name,
 
         // app configuration
         badge: badge,
+        counter: counter,
         width: width,
         height: height,
         userAgent: userAgent