introduce platform api and rename notifications to notification-manager

1 files changed, 74 insertions, 0 deletions

diff --git a/app/scripts/lib/notification-manager.js b/app/scripts/lib/notification-manager.js
new file mode 100644
index 000000000..ff8a4b2e5
--- /dev/null
+++ b/app/scripts/lib/notification-manager.js
@@ -0,0 +1,74 @@
+const extension = require('extensionizer')
+const height = 520
+const width = 360
+
+
+class NotificationManager {
+
+  //
+  // Public
+  //
+
+  show () {
+    this.getPopup((err, popup) => {
+      if (err) throw err
+
+      if (popup) {
+        // bring focus to existing popup
+        extension.windows.update(popup.id, { focused: true })
+      } else {
+        // create new popup
+        extension.windows.create({
+          url: 'notification.html',
+          type: 'popup',
+          width,
+          height,
+        })
+        .catch((reason) => {
+          log.error('failed to create poupup', reason)
+        })
+      }
+    })
+  }
+
+  getPopup (cb) {
+    this._getWindows((err, windows) => {
+      if (err) throw err
+      cb(null, this._getPopupIn(windows))
+    })
+  }
+
+  closePopup () {
+    this.getPopup((err, popup) => {
+      if (err) throw err
+      if (!popup) return
+      extension.windows.remove(popup.id, console.error)
+    })
+  }
+
+  //
+  // Private
+  //
+
+  _getWindows (cb) {
+    // Ignore in test environment
+    if (!extension.windows) {
+      return cb()
+    }
+
+    extension.windows.getAll({}, (windows) => {
+      cb(null, windows)
+    })
+  }
+
+  _getPopupIn (windows) {
+    return windows ? windows.find((win) => {
+      return (win && win.type === 'popup' &&
+        win.height === height &&
+        win.width === width)
+    }) : null
+  }
+
+}
+
+module.exports = NotificationManager
\ No newline at end of file