implement d/u command

manifest.json

@@ -11,5 +11,8 @@
   ],
   "background": {
     "scripts": ["build/background.js"]
-  }
+  },
+  "permissions": [
+    "sessions"
+  ]
 }

src/background/index.js

@@ -26,6 +26,12 @@ const keyDownHandle = (request, sender, sendResponse) => {
 
 const doBackgroundAction = (sender, action) => {
   switch(action[0]) {
+  case actions.TABS_CLOSE:
+    tabs.closeTab(sender.tab.id);
+    break;
+  case actions.TABS_REOPEN:
+    tabs.reopenTab();
+    break;
   case actions.TABS_PREV:
     tabs.selectPrevTab(sender.tab.index, actions[1] || 1);
     break;

src/background/key-queue.js

@@ -9,6 +9,8 @@ const DEFAULT_KEYMAP = [
   { keys: [{ code: KeyboardEvent.DOM_VK_J }], action: [ actions.SCROLL_DOWN, 1 ]},
   { keys: [{ code: KeyboardEvent.DOM_VK_G }, { code: KeyboardEvent.DOM_VK_G }], action: [ actions.SCROLL_TOP ]},
   { keys: [{ code: KeyboardEvent.DOM_VK_G, shift: true }], action: [ actions.SCROLL_BOTTOM ]},
+  { keys: [{ code: KeyboardEvent.DOM_VK_D }], action: [ actions.TABS_CLOSE ]},
+  { keys: [{ code: KeyboardEvent.DOM_VK_U }], action: [ actions.TABS_REOPEN]},
   { keys: [{ code: KeyboardEvent.DOM_VK_H }], action: [ actions.TABS_PREV, 1 ]},
   { keys: [{ code: KeyboardEvent.DOM_VK_L }], action: [ actions.TABS_NEXT, 1 ]},
 ]

src/background/tabs.js

@@ -1,3 +1,23 @@
+const closeTab = (id) => {
+  browser.tabs.remove(id);
+};
+
+const reopenTab = () => {
+  browser.sessions.getRecentlyClosed({
+    maxResults: 1
+  }).then((sessions) => {
+    if (sessions.length === 0) {
+      return;
+    }
+    let session = sessions[0];
+    if (session.tab) {
+      browser.sessions.restore(session.tab.sessionId);
+    } else {
+      browser.sessions.restore(session.window.sessionId);
+    }
+  });
+};
+
 const selectPrevTab = (current, count) => {
   chrome.tabs.query({ currentWindow: true }, (tabs) => {
     if (tabs.length < 2) {
@@ -20,4 +40,4 @@ const selectNextTab = (current, count) => {
   });
 };
 
-export { selectNextTab, selectPrevTab };
+export { closeTab, reopenTab, selectNextTab, selectPrevTab };

src/shared/actions.js

@@ -1,5 +1,7 @@
 export const CMD_OPEN = 'cmd.open';
 export const CMD_TABS_OPEN = 'cmd.tabs.open';
+export const TABS_CLOSE = 'tabs.close';
+export const TABS_REOPEN = 'tabs.reopen';
 export const TABS_PREV = 'tabs.prev';
 export const TABS_NEXT = 'tabs.next';
 export const SCROLL_UP = 'scroll.up';
@@ -8,6 +10,8 @@ export const SCROLL_TOP = 'scroll.top';
 export const SCROLL_BOTTOM = 'scroll.bottom';
 
 const BACKGROUND_ACTION_SET = new Set([
+  TABS_CLOSE,
+  TABS_REOPEN,
   TABS_PREV,
   TABS_NEXT
 ]);