console state as action/reducer in redux

src/actions/console.js

@@ -0,0 +1,28 @@
+import actions from '../actions';
+
+export function showCommand(text) {
+  return {
+    type: actions.CONSOLE_SHOW_COMMAND,
+    text: text
+  };
+}
+
+export function setCompletions(completions) {
+  return { 
+    type: actions.CONSOLE_SET_COMPLETIONS,
+    completions: completions
+  };
+}
+
+export function showError(text) {
+  return {
+    type: actions.CONSOLE_SHOW_ERROR,
+    text: text
+  };
+}
+
+export function hide() {
+  return { 
+    type: actions.CONSOLE_HIDE
+  };
+}

src/actions/index.js

@@ -0,0 +1,6 @@
+export default {
+  CONSOLE_SHOW_COMMAND: 'vimvixen.console.show.command',
+  CONSOLE_SET_COMPLETIONS: 'vimvixen.console.set.completions',
+  CONSOLE_SHOW_ERROR: 'vimvixen.console.show.error',
+  CONSOLE_HIDE: 'vimvixen.console.hide'
+};

src/console/console-frame.js

@@ -1,4 +1,5 @@
 import './console-frame.scss';
+import * as consoleActions from '../actions/console';
 
 export default class ConsoleFrame {
   constructor(win) {
@@ -16,26 +17,17 @@ export default class ConsoleFrame {
 
   showCommand(text) {
     this.showFrame();
-
-    let message = {
-      type: 'vimvixen.console.show.command',
-      text: text
-    };
     this.errorShown = false;
-    return browser.runtime.sendMessage(message);
+    return browser.runtime.sendMessage(consoleActions.showCommand(text));
   }
 
   showError(text) {
     this.showFrame();
 
-    let message = {
-      type: 'vimvixen.console.show.error',
-      text: text
-    };
     this.errorShown = true;
     this.element.blur();
 
-    return browser.runtime.sendMessage(message);
+    return browser.runtime.sendMessage(consoleActions.showError(text));
   }
 
   showFrame() {
@@ -46,6 +38,8 @@ export default class ConsoleFrame {
     this.element.style.display = 'none';
     this.element.blur();
     this.errorShown = false;
+
+    return browser.runtime.sendMessage(consoleActions.hide());
   }
 
   isErrorShown() {
@@ -53,9 +47,6 @@ export default class ConsoleFrame {
   }
 
   setCompletions(completions) {
-    return browser.runtime.sendMessage({
-      type: 'vimvixen.console.set.completions',
-      completions: completions
-    });
+    return browser.runtime.sendMessage(consoleActions.setCompletions(completions));
   }
 }

src/console/console.js

@@ -1,10 +1,12 @@
 import './console.scss';
 import Completion from './completion';
+import consoleReducer, { defaultState } from '../reducers/console';
 
 // TODO consider object-oriented
 var prevValue = "";
 var completion = null;
 var completionOrigin = "";
+let state = defaultState;
 
 const blurMessage = () => {
   return {
@@ -96,38 +98,6 @@ window.addEventListener('load', () => {
   input.addEventListener('keyup', handleKeyup);
 });
 
-const showCommand = (text) => {
-  let command = window.document.querySelector('#vimvixen-console-command');
-  command.style.display = 'block';
-
-  let error = window.document.querySelector('#vimvixen-console-error');
-  error.style.display = 'none';
-
-  let input = window.document.querySelector('#vimvixen-console-command-input');
-  input.value = text;
-  input.focus();
-
-  completion = null;
-  let container  = window.document.querySelector('#vimvixen-console-completion');
-  container.innerHTML = '';
-
-  return browser.runtime.sendMessage(keyupMessage(input));
-}
-
-const showError = (text) => {
-  let error = window.document.querySelector('#vimvixen-console-error');
-  error.textContent = text;
-  error.style.display = 'block';
-
-  let command = window.document.querySelector('#vimvixen-console-command');
-  command.style.display = 'none';
-
-  let completion  = window.document.querySelector('#vimvixen-console-completion');
-  completion.style.display = 'none';
-
-  return Promise.resolve();
-}
-
 const createCompletionTitle = (text) => {
   let li = document.createElement('li');
   li.className = 'vimvixen-console-completion-title';
@@ -152,56 +122,68 @@ const createCompletionItem = (icon, caption, url) => {
   return li;
 }
 
-const setCompletions = (completions) => {
+const selectCompletion = (target) => {
   let container  = window.document.querySelector('#vimvixen-console-completion');
-  container.style.display = 'block';
-  container.innerHTML = '';
+  Array.prototype.forEach.call(container.children, (ele) => {
+    if (!ele.classList.contains('vimvixen-console-completion-item')) {
+      return;
+    }
+    if (ele === target) {
+      ele.classList.add('vimvixen-completion-selected');
+    } else {
+      ele.classList.remove('vimvixen-completion-selected');
+    }
+  });
+};
+
+const updateCompletions = (completions) => {
+  let completionsContainer  = window.document.querySelector('#vimvixen-console-completion');
+  let input = window.document.querySelector('#vimvixen-console-command-input');
+
+  completionsContainer.innerHTML = '';
 
   let pairs = [];
 
   for (let group of completions) {
     let title = createCompletionTitle(group.name);
-    container.append(title);
+    completionsContainer.append(title);
 
     for (let item of group.items) {
       let li = createCompletionItem(item.icon, item.caption, item.url);
-      container.append(li);
+      completionsContainer.append(li);
 
       pairs.push([item, li]);
     }
   }
 
   completion = new Completion(pairs);
+  completionOrigin = input.value.split(' ')[0];
+}
 
+const update = (prevState, state) => {
+  let error = window.document.querySelector('#vimvixen-console-error');
+  let command = window.document.querySelector('#vimvixen-console-command');
   let input = window.document.querySelector('#vimvixen-console-command-input');
-  completionOrigin = input.value.split(' ')[0];
 
-  return Promise.resolve();
-}
+  error.style.display = state.errorShown ? 'block' : 'none';
+  error.textContent = state.errorText;
 
-const selectCompletion = (target) => {
-  let container  = window.document.querySelector('#vimvixen-console-completion');
-  Array.prototype.forEach.call(container.children, (ele) => {
-    if (!ele.classList.contains('vimvixen-console-completion-item')) {
-      return;
-    }
-    if (ele === target) {
-      ele.classList.add('vimvixen-completion-selected');
-    } else {
-      ele.classList.remove('vimvixen-completion-selected');
-    }
-  });
-};
+  command.style.display = state.commandShown ? 'block' : 'none';
+  if (!prevState.commandShown && state.commandShown) {
+    // setup input on firstly shown
+    input.value = state.commandText;
+    input.focus();
+  }
+
+  if (JSON.stringify(state.completions) !== JSON.stringify(prevState.completions)) {
+    updateCompletions(state.completions);
+  }
+}
 
 browser.runtime.onMessage.addListener((action) => {
-  switch (action.type) {
-  case 'vimvixen.console.show.error':
-    return showError(action.text);
-  case 'vimvixen.console.set.completions':
-    return setCompletions(action.completions);
-  case 'vimvixen.console.show.command':
-    return showCommand(action.text);
-  default:
-    return Promise.resolve();
+  let nextState = consoleReducer(state, action);
+  if (JSON.stringify(nextState) !== JSON.stringify(state)) {
+    update(state, nextState);
+    state = nextState;
   }
 });

src/content/index.js

@@ -6,7 +6,6 @@ import Follow from './follow';
 
 let vvConsole = new ConsoleFrame(window);
 
-
 browser.runtime.onMessage.addListener((action) => {
   switch (action.type) {
   case actions.CMD_OPEN:

src/reducers/console.js

@@ -0,0 +1,39 @@
+import actions from '../actions';
+
+export const defaultState = {
+  errorText: '',
+  errorShown: false,
+  commandText: '',
+  commandShown: false,
+  completions: [],
+};
+
+export default function reducer(state = defaultState, action = {}) {
+  switch (action.type) {
+  case actions.CONSOLE_SHOW_COMMAND:
+    return Object.assign({}, state, {
+      commandShown: true, 
+      commandText: action.text,
+      errorShow: false,
+      completions: []
+    });
+  case actions.CONSOLE_SET_COMPLETIONS:
+    return Object.assign({}, state, {
+      completions: action.completions
+    });
+  case actions.CONSOLE_SHOW_ERROR:
+    return Object.assign({}, state, {
+      errorText: action.message,
+      errorShow: true,
+      commandShown: false,
+    });
+  case actions.CONSOLE_HIDE:
+    return Object.assign({}, state, {
+      errorShown: false,
+      commandShown: false
+      
+    });
+  default:
+    return state;
+  }
+}