do simple completion

src/background/index.js

@@ -84,8 +84,20 @@ browser.runtime.onMessage.addListener((request, sender) => {
     return keyPressHandle(request, sender);
   case 'event.cmd.enter':
     return cmdEnterHandle(request, sender);
-  case 'event.cmd.suggest':
-    // TODO make suggestion and return
+  case 'event.cmd.tabs.completion':
+    return tabs.getCompletions(request.text).then((tabs) => {
+      let items = tabs.map((tab) => {
+        return {
+          caption: tab.title,
+          content: tab.title,
+          url: tab.url
+        }
+      });
+      return {
+        name: "Buffers",
+        items: items
+      };
+    });
     break;
   }
   return Promise.resolve();

src/background/tabs.js

@@ -49,6 +49,15 @@ const selectByKeyword = (current, keyword) => {
   });
 }
 
+const getCompletions = (keyword) => {
+  return browser.tabs.query({ currentWindow: true }).then((tabs) => {
+    let matched = tabs.filter((t) => {
+      return t.url.includes(keyword) || t.title.includes(keyword)
+    })
+    return matched;
+  });
+};
+
 const selectPrevTab = (current, count) => {
   return browser.tabs.query({ currentWindow: true }, (tabs) => {
     if (tabs.length < 2) {
@@ -78,4 +87,4 @@ const reload = (current, cache) => {
   );
 };
 
-export { closeTab, reopenTab, selectAt, selectByKeyword, selectNextTab, selectPrevTab, reload };
+export { closeTab, reopenTab, selectAt, selectByKeyword, getCompletions, selectPrevTab, selectNextTab, reload };