support 0/$ commands

2 files changed, 21 insertions, 3 deletions

diff --git a/src/content/index.js b/src/content/index.js
index 6bf5d57..9dd3706 100644
--- a/src/content/index.js
+++ b/src/content/index.js
@@ -49,10 +49,16 @@ const invokeEvent = (action) => {
     scrolls.scrollPages(window, action[1]);
     break;
   case actions.SCROLL_TOP:
-    scrolls.scrollTop(window, action[1]);
+    scrolls.scrollTop(window);
     break;
   case actions.SCROLL_BOTTOM:
-    scrolls.scrollBottom(window, action[1]);
+    scrolls.scrollBottom(window);
+    break;
+  case actions.SCROLL_LEFT:
+    scrolls.scrollLeft(window);
+    break;
+  case actions.SCROLL_RIGHT:
+    scrolls.scrollRight(window);
     break;
   case actions.FOLLOW_START:
     new Follow(window.document, action[1] || false);
diff --git a/src/content/scrolls.js b/src/content/scrolls.js
index 540703e..bc88e43 100644
--- a/src/content/scrolls.js
+++ b/src/content/scrolls.js
@@ -25,4 +25,16 @@ const scrollBottom = (page) => {
   page.scrollTo(x, y);
 };
 
-export { scrollLines, scrollPages, scrollTop, scrollBottom }
+const scrollLeft = (page) => {
+  let x = 0;
+  let y = page.scrollY;
+  page.scrollTo(x, y);
+};
+
+const scrollRight = (page) => {
+  let x = page.scrollMaxX;
+  let y = page.scrollY;
+  page.scrollTo(x, y);
+};
+
+export { scrollLines, scrollPages, scrollTop, scrollBottom, scrollLeft, scrollRight }