4 files changed, 96 insertions, 1 deletions
diff --git a/src/command-line/command-line-frame.js b/src/command-line/command-line-frame.js
new file mode 100644
index 0000000..3f1dda4
--- /dev/null
+++ b/src/command-line/command-line-frame.js
@@ -0,0 +1,19 @@
+import './command-line-frame.scss';
+
+export default class CommandLineFrame {
+  constructor(win, initial = '') {
+    let url = browser.runtime.getURL('build/command-line.html') +
+      '#' + encodeURIComponent(initial);
+
+    let element = window.document.createElement('iframe');
+    element.src = url;
+    element.className = 'vimvixen-command-line-frame';
+    win.document.body.append(element);
+
+    this.element = element;
+  }
+
+  remove() {
+    this.element.remove();
+  }
+}
diff --git a/src/command-line/command-line-frame.scss b/src/command-line/command-line-frame.scss
new file mode 100644
index 0000000..67bf514
--- /dev/null
+++ b/src/command-line/command-line-frame.scss
@@ -0,0 +1,11 @@
+.vimvixen-command-line-frame {
+  margin: 0;
+  padding: 0;
+  bottom: 0;
+  left: 0;
+  width: 100%;
+  height: 20px;
+  position: fixed;
+  z-index: 10000;
+  border: none;
+}
diff --git a/src/command-line/index.html b/src/command-line/index.html
index e9e4123..bad0b66 100644
--- a/src/command-line/index.html
+++ b/src/command-line/index.html
@@ -9,7 +9,9 @@
     <div>
       <p class='vimvixen-command-line-title'></p>
       <div class='vimvixen-command-line-line'>
-        <i class='vimvixen-command-line-line-prompt'></i><input class='vimvixen-command-line-line-input'></input>
+        <i class='vimvixen-command-line-line-prompt'></i><input
+          id='vimvixen-command-line-line-input'
+          class='vimvixen-command-line-line-input'></input>
       </div>
     </div>
   </body>
diff --git a/src/command-line/index.js b/src/command-line/index.js
index 67aac61..f99afa0 100644
--- a/src/command-line/index.js
+++ b/src/command-line/index.js
@@ -1 +1,64 @@
 import './index.scss';
+
+const parent = window.parent;
+
+// TODO consider object-oriented
+var prevValue = "";
+
+const blurData = () => {
+  return JSON.stringify({
+    type: 'vimvixen.commandline.blur'
+  });
+};
+
+const keydownData = (input) => {
+  return JSON.stringify({
+    type: 'vimvixen.commandline.enter',
+    value: input.value
+  });
+};
+
+const keyupData = (input) => {
+  return JSON.stringify({
+    type: 'vimvixen.commandline.change',
+    value: input.value
+  });
+};
+
+const handleBlur = () => {
+  parent.postMessage(blurData(), '*');
+};
+
+const handleKeydown = (e) => {
+  switch(e.keyCode) {
+  case KeyboardEvent.DOM_VK_ESCAPE:
+    parent.postMessage(blurData(), '*');
+    break;
+  case KeyboardEvent.DOM_VK_RETURN:
+    parent.postMessage(keydownData(e.target), '*');
+    break;
+  }
+};
+
+const handleKeyup = (e) => {
+  if (e.target.value === prevValue) {
+    return;
+  }
+  parent.postMessage(keyupData(e.target), '*');
+  prevValue = e.target.value;
+};
+
+window.addEventListener('load', () => {
+  let hash = window.location.hash;
+  let initial = '';
+  if (hash.length > 0) {
+    initial = decodeURIComponent(hash.substring(1));
+  }
+
+  let input = window.document.querySelector('#vimvixen-command-line-line-input');
+  input.addEventListener('blur', handleBlur);
+  input.addEventListener('keydown', handleKeydown);
+  input.addEventListener('keyup', handleKeyup);
+  input.value = initial;
+  input.focus();
+});