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 };

src/console/console-frame.js

@@ -53,6 +53,9 @@ export default class ConsoleFrame {
   }
 
   setCompletions(completions) {
-    messages.send(this.element.contentWindow, completions);
+    messages.send(this.element.contentWindow, {
+      type: 'vimvixen.console.set.completions',
+      completions: completions
+    });
   }
 }

src/content/index.js

@@ -83,11 +83,27 @@ window.addEventListener("keypress", (e) => {
   browser.runtime.sendMessage(request)
     .then(handleResponse)
     .catch((err) => {
+      console.error("Vim Vixen:", err);
       vvConsole.showError(err.message);
-      console.log(`Vim Vixen: ${err}`);
     });
 });
 
+const doCompletion = (line) => {
+  if (line.startsWith('buffer ')) {
+    let keyword = line.replace('buffer ', '');
+
+    browser.runtime.sendMessage({
+      type: 'event.cmd.tabs.completion',
+      text: keyword
+    }).then((completions) => {
+      vvConsole.setCompletions([completions]);
+    }).catch((e) => {
+      console.error("Vim Vixen:", err);
+      vvConsole.showError(e.message);
+    });
+  }
+};
+
 messages.receive(window, (message) => {
   switch (message.type) {
   case 'vimvixen.command.blur':
@@ -100,16 +116,12 @@ messages.receive(window, (message) => {
       type: 'event.cmd.enter',
       text: message.value
     }).catch((e) => {
+      console.error("Vim Vixen:", err);
       vvConsole.showError(e.message);
     });
     break;
   case 'vimvixen.command.change':
-    browser.runtime.sendMessage({
-      type: 'event.cmd.suggest',
-      text: message.value
-    }).catch((e) => {
-      vvConsole.showError(e.message);
-    });
+    doCompletion(message.value);
     break;
   default:
     return;