3 files changed, 19 insertions, 21 deletions
diff --git a/src/content/actions/operation.js b/src/content/actions/operation.js
index b4b2e38..5fd0f48 100644
--- a/src/content/actions/operation.js
+++ b/src/content/actions/operation.js
@@ -2,6 +2,7 @@ import operations from 'shared/operations';
 import messages from 'shared/messages';
 import * as scrolls from 'content/scrolls';
 import * as navigates from 'content/navigates';
+import * as focuses from 'content/focuses';
 import * as urls from 'content/urls';
 import * as consoleFrames from 'content/console-frames';
 import * as addonActions from './addon';
@@ -57,6 +58,8 @@ const exec = (operation, repeat, settings) => {
     return navigates.parent(window);
   case operations.NAVIGATE_ROOT:
     return navigates.root(window);
+  case operations.FOCUS_INPUT:
+    return focuses.focusInput();
   case operations.URLS_YANK:
     urls.yank(window);
     return consoleFrames.postMessage(window.document, {
diff --git a/src/content/focuses.js b/src/content/focuses.js
new file mode 100644
index 0000000..a6f6cc8
--- /dev/null
+++ b/src/content/focuses.js
@@ -0,0 +1,13 @@
+import * as doms from 'shared/utils/dom';
+
+const focusInput = () => {
+  let inputTypes = ['email', 'number', 'search', 'tel', 'text', 'url'];
+  let inputSelector = inputTypes.map(type => `input[type=${type}]`).join(',');
+  let targets = window.document.querySelectorAll(inputSelector + ',textarea');
+  let target = Array.from(targets).find(doms.isVisible);
+  if (target) {
+    target.focus();
+  }
+};
+
+export { focusInput };
diff --git a/src/content/scrolls.js b/src/content/scrolls.js
index e8e9642..0d1f7c8 100644
--- a/src/content/scrolls.js
+++ b/src/content/scrolls.js
@@ -1,3 +1,5 @@
+import * as doms from 'shared/utils/dom';
+
 const SCROLL_DELTA_X = 48;
 const SCROLL_DELTA_Y = 48;
 const SMOOTH_SCROLL_DURATION = 150;
@@ -5,25 +7,6 @@ const SMOOTH_SCROLL_DURATION = 150;
 // dirty way to store scrolling state on globally
 let scrolling = [false];
 
-const isVisible = (element) => {
-  let rect = element.getBoundingClientRect();
-  if (rect.width === 0 || rect.height === 0) {
-    return false;
-  }
-  if (rect.right < 0 && rect.bottom < 0) {
-    return false;
-  }
-  if (window.innerWidth < rect.left && window.innerHeight < rect.top) {
-    return false;
-  }
-
-  let { display, visibility } = window.getComputedStyle(element);
-  if (display === 'none' || visibility === 'hidden') {
-    return false;
-  }
-  return true;
-};
-
 const isScrollableStyle = (element) => {
   let { overflowX, overflowY } = window.getComputedStyle(element);
   return !(overflowX !== 'scroll' && overflowX !== 'auto' &&
@@ -44,8 +27,7 @@ const findScrollable = (element) => {
     return element;
   }
 
-  let children = Array.prototype
-    .filter.call(element.children, e => isVisible(e));
+  let children = Array.from(element.children).filter(doms.isVisible);
   for (let child of children) {
     let scrollable = findScrollable(child);
     if (scrollable) {