From c7668c7c685ba182d9d6d21e5094e17eac3a352f Mon Sep 17 00:00:00 2001
From: Cam Song <neosoyn@gmail.com>
Date: Fri, 16 Sep 2016 00:17:00 +0800
Subject: [PATCH] release 0.16.0, add ignore spaces feature, close #5

---
 README.md        |  6 +++++
 ignore-spaces.js | 58 ++++++++++++++++++++++++++++++++++++++++++++++++
 manifest.json    |  4 ++--
 3 files changed, 66 insertions(+), 2 deletions(-)
 create mode 100644 ignore-spaces.js

diff --git a/README.md b/README.md
index e6eb17c..c35e6e6 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,12 @@ Amazing native-like 'Download' button in file detail page!
 
 ![show notifications](https://cloud.githubusercontent.com/assets/948896/14252559/860a154a-faba-11e5-8721-1b69070b3cdb.png)
 
+#### 7. Ignore whitespace feature
+
+Add 'Ignore Spaces' and 'Show Spaces' button to let you ignore whitespace in code review. The trick behind this is adding `?w=1` to any diff URL will remove any changes only in whitespace, enabling you to see only that code that has changed.
+
+![Ignore whitespace](https://camo.githubusercontent.com/797184940defadec00393e6559b835358a863eeb/68747470733a2f2f6769746875622d696d616765732e73332e616d617a6f6e6177732e636f6d2f626c6f672f323031312f736563726574732f776869746573706163652e706e67)
+
 ### TODO
 
 * Download folder on one click
diff --git a/ignore-spaces.js b/ignore-spaces.js
new file mode 100644
index 0000000..f0034f2
--- /dev/null
+++ b/ignore-spaces.js
@@ -0,0 +1,58 @@
+var IgnoreSpace = {
+  init: function() {
+    if (document.querySelectorAll('.ignore-spaces-btn')) {
+      document.querySelectorAll('.ignore-spaces-btn').forEach(function(node) {
+        node.remove();
+      })
+    }
+    if (this.isValid()) {
+      if (this.isCurrentIgnore()) {
+        this.renderShowSpacesBtn();
+      } else {
+        this.renderIgnoreSpacesBtn();
+      }
+    }
+  },
+
+  // Check if it's code review diff page. like https://github.com/angular/angular.js/pull/10539/files?w=1
+  isValid() {
+    return document.querySelector('.diffbar') && document.querySelector('.pr-review-tools');
+  },
+
+  isCurrentIgnore() {
+    return location.search.indexOf('w=1') > -1;
+  },
+
+  renderShowSpacesBtn() {
+    // remove w=1 in url
+    let url = location.href.replace('w=1&', '').replace('&w=1', '').replace('?w=1', '');
+    this.addBtn(this.newBtn(url, 'Show Spaces', 'Click to show spaces in the Diff'));
+  },
+
+  renderIgnoreSpacesBtn() {
+    // add w=1 in url
+    let url = location.href + (location.href.indexOf('?') > -1 ? '&w=1' : '?w=1');
+    this.addBtn(this.newBtn(url, 'Ignore Spaces', 'Click to hide spaces in the Diff'));
+  },
+
+  newBtn(url, text, hint) {
+    let btn = document.createElement('a');
+    btn.setAttribute('class', 'btn btn-sm btn-primary tooltipped tooltipped-n ignore-spaces-btn');
+    btn.setAttribute('style', 'float: left; margin-right: 20px');
+    btn.setAttribute('href', url);
+    btn.setAttribute('aria-label', hint);
+    btn.textContent = text;
+    return btn;
+  },
+
+  addBtn(btn) {
+    document.querySelector('.pr-review-tools').prepend(btn);
+  }
+}
+
+IgnoreSpace.init();
+
+// 当使用 pjax 更新页面时执行
+document.addEventListener('_pjax:end', function() {
+  IgnoreSpace.init();
+}, false);
diff --git a/manifest.json b/manifest.json
index 30b8723..1277ae4 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
   "name": "Octo Mate",
   "description": "Missing mate of GitHub, making single file download effortless and with more features",
   "default_locale": "en",
-  "version": "0.15.2",
+  "version": "0.16.0",
   "background": {
     "persistent": false,
     "page": "background.html"
@@ -18,7 +18,7 @@
       "matches": ["https://github.com/*"],
       "run_at": "document_end",
       "css": ["style.css"],
-      "js": ["jquery-2.1.3.min.js", "page.js", "config.js", "script.js", "show-size.js", "tab-size.js", "panel.js"]
+      "js": ["jquery-2.1.3.min.js", "page.js", "config.js", "script.js", "show-size.js", "tab-size.js", "panel.js", "ignore-spaces.js"]
     }
   ],
   "browser_action": {