From 68b61d71c6e66944bbcdc398654b6690b0a10ae2 Mon Sep 17 00:00:00 2001
From: Kevin Sawicki <kevin@github.com>
Date: Wed, 27 Feb 2013 15:36:08 -0800
Subject: [PATCH] Trigger event when path status changes

---
 spec/app/git-spec.coffee | 26 ++++++++++++++++++++++++++
 src/app/git.coffee       |  5 +++++
 2 files changed, 31 insertions(+)

diff --git a/spec/app/git-spec.coffee b/spec/app/git-spec.coffee
index 2a9522d3a..2697e9723 100644
--- a/spec/app/git-spec.coffee
+++ b/spec/app/git-spec.coffee
@@ -148,6 +148,32 @@ describe "Git", ->
       fs.write(path, "#{originalPathText} edited line")
       expect(repo.getDiffStats(path)).toEqual {added: 1, deleted: 1}
 
+  describe ".getPathStatus(path)", ->
+    [path, originalPathText] = []
+
+    beforeEach ->
+      repo = new Git(require.resolve('fixtures/git/working-dir'))
+      path = require.resolve('fixtures/git/working-dir/file.txt')
+      originalPathText = fs.read(path)
+
+    afterEach ->
+      fs.write(path, originalPathText)
+
+    it "trigger a status-changed event when the new status differs from the last cached one", ->
+      statusHandler = jasmine.createSpy("statusHandler")
+      repo.on 'status-changed', statusHandler
+      status = repo.getPathStatus(path)
+      expect(statusHandler.callCount).toBe 1
+      expect(statusHandler.argsForCall[0][0..1]).toEqual [path, status]
+
+      fs.write(path, '')
+      status = repo.getPathStatus(path)
+      expect(statusHandler.callCount).toBe 2
+      expect(statusHandler.argsForCall[1][0..1]).toEqual [path, status]
+
+      repo.getPathStatus(path)
+      expect(statusHandler.callCount).toBe 2
+
   describe ".refreshStatus()", ->
     [newPath, modifiedPath, cleanPath, originalModifiedPathText] = []
 
diff --git a/src/app/git.coffee b/src/app/git.coffee
index 5284b7e5a..8e24a4b97 100644
--- a/src/app/git.coffee
+++ b/src/app/git.coffee
@@ -59,7 +59,12 @@ class Git
     @getRepo().getHead() ? ''
 
   getPathStatus: (path) ->
+    currentPathStatus = @statuses[path]
     pathStatus = @getRepo().getStatus(@relativize(path))
+    @statuses[path] = pathStatus
+    if currentPathStatus isnt pathStatus
+      @trigger 'status-changed', path, pathStatus
+    pathStatus
 
   isPathIgnored: (path) ->
     @getRepo().isIgnored(@relativize(path))