Added Loader to indicate loading of sketches (#880)

* Added Loader to indicate loading of sketches

* Fixed styles

* Changed styles

* remove prefixes

* Issues Fixed:

* added Loader

* Refactor

* Issues Fixed

* clean up loader functions

client/constants.js

@@ -118,5 +118,8 @@ export const HIDE_RUNTIME_ERROR_WARNING = 'HIDE_RUNTIME_ERROR_WARNING';
 export const SHOW_RUNTIME_ERROR_WARNING = 'SHOW_RUNTIME_ERROR_WARNING';
 export const SET_ASSETS = 'SET_ASSETS';
 
+export const START_LOADING = 'START_LOADING';
+export const STOP_LOADING = 'STOP_LOADING';
+
 export const START_SAVING_PROJECT = 'START_SAVING_PROJECT';
 export const END_SAVING_PROJECT = 'END_SAVING_PROJECT';

client/modules/App/components/loader.jsx

@@ -0,0 +1,9 @@
+import React from 'react';
+
+const Loader = () => (
+  <div className="loader">
+    <div className="loader__circle1" />
+    <div className="loader__circle2" />
+  </div>
+);
+export default Loader;

client/modules/IDE/actions/loader.js

@@ -0,0 +1,9 @@
+import * as ActionTypes from '../../../constants';
+
+export function startLoader() {
+  return { type: ActionTypes.START_LOADING };
+}
+
+export function stopLoader() {
+  return { type: ActionTypes.STOP_LOADING };
+}

client/modules/IDE/actions/projects.js

@@ -2,12 +2,14 @@ import axios from 'axios';
 import * as ActionTypes from '../../../constants';
 import { showErrorModal, setPreviousPath } from './ide';
 import { resetProject } from './project';
+import { startLoader, stopLoader } from './loader';
 
 const __process = (typeof global !== 'undefined' ? global : window).process;
 const ROOT_URL = __process.env.API_URL;
 
 export function getProjects(username) {
   return (dispatch) => {
+    dispatch(startLoader());
     let url;
     if (username) {
       url = `${ROOT_URL}/${username}/projects`;
@@ -20,11 +22,15 @@ export function getProjects(username) {
           type: ActionTypes.SET_PROJECTS,
           projects: response.data
         });
+        dispatch(stopLoader());
       })
-      .catch(response => dispatch({
-        type: ActionTypes.ERROR,
-        error: response.data
-      }));
+      .catch((response) => {
+        dispatch({
+          type: ActionTypes.ERROR,
+          error: response.data
+        });
+        dispatch(stopLoader());
+      });
   };
 }
 

client/modules/IDE/components/SketchList.jsx

@@ -9,6 +9,7 @@ import { bindActionCreators } from 'redux';
 import * as ProjectActions from '../actions/project';
 import * as SketchActions from '../actions/projects';
 import * as ToastActions from '../actions/toast';
+import Loader from '../../App/components/loader';
 
 const trashCan = require('../../../images/trash-can.svg');
 
@@ -25,6 +26,20 @@ class SketchList extends React.Component {
     return `p5.js Web Editor | ${this.props.username}'s sketches`;
   }
 
+  hasSketches() {
+    return !this.props.loading && this.props.sketches.length > 0;
+  }
+
+  renderLoader() {
+    if (this.props.loading) return <Loader />;
+    return null;
+  }
+
+  renderEmptyTable() {
+    if (!this.props.loading && this.props.sketches.length === 0) return (<p className="sketches-table__empty">No sketches.</p>);
+    return null;
+  }
+
   render() {
     const username = this.props.username !== undefined ? this.props.username : this.props.user.username;
     return (
@@ -32,10 +47,9 @@ class SketchList extends React.Component {
         <Helmet>
           <title>{this.getSketchesTitle()}</title>
         </Helmet>
-        { this.props.sketches.length === 0 &&
-          <p className="sketches-table__empty">No sketches.</p>
-        }
-        { this.props.sketches.length > 0 &&
+        {this.renderLoader()}
+        {this.renderEmptyTable()}
+        {this.hasSketches() &&
           <table className="sketches-table" summary="table containing all saved projects">
             <thead>
               <tr>
@@ -95,6 +109,7 @@ SketchList.propTypes = {
     updatedAt: PropTypes.string.isRequired
   })).isRequired,
   username: PropTypes.string,
+  loading: PropTypes.bool.isRequired,
   deleteProject: PropTypes.func.isRequired
 };
 
@@ -105,7 +120,8 @@ SketchList.defaultProps = {
 function mapStateToProps(state) {
   return {
     user: state.user,
-    sketches: state.sketches
+    sketches: state.sketches,
+    loading: state.loading,
   };
 }
 

client/modules/IDE/reducers/loading.js

@@ -0,0 +1,14 @@
+import * as ActionTypes from '../../../constants';
+
+const loading = (state = false, action) => {
+  switch (action.type) {
+    case ActionTypes.START_LOADING:
+      return true;
+    case ActionTypes.STOP_LOADING:
+      return false;
+    default:
+      return state;
+  }
+};
+
+export default loading;

client/reducers.js

@@ -10,6 +10,7 @@ import sketches from './modules/IDE/reducers/projects';
 import toast from './modules/IDE/reducers/toast';
 import console from './modules/IDE/reducers/console';
 import assets from './modules/IDE/reducers/assets';
+import loading from './modules/IDE/reducers/loading';
 
 const rootReducer = combineReducers({
   form,
@@ -22,7 +23,8 @@ const rootReducer = combineReducers({
   editorAccessibility,
   toast,
   console,
-  assets
+  assets,
+  loading
 });
 
 export default rootReducer;

client/styles/components/_loader.scss

@@ -0,0 +1,40 @@
+.loader {
+	width: #{80 / $base-font-size }rem;
+	height: #{80 /  $base-font-size}rem;
+
+	position: relative;
+	margin: #{100 /  $base-font-size}rem auto;
+}
+
+.loader__circle1,
+.loader__circle2 {
+	width: 100%;
+	height: 100%;
+	border-radius: 80%;
+
+	@include themify() {
+		background-color: getThemifyVariable('logo-color');
+	}
+
+	opacity: 0.6;
+	position: absolute;
+	top: 0;
+	left: 0;
+	animation: sk-bounce 2.0s infinite ease-in-out;
+}
+
+.loader__circle2 {
+	animation-delay: -1.0s;
+}
+
+@keyframes sk-bounce {
+
+	0%,
+	100% {
+		transform: scale(0.0);
+	}
+
+	50% {
+		transform: scale(1.0);
+	}
+}

client/styles/main.scss

@@ -41,6 +41,7 @@
 @import 'components/keyboard-shortcuts';
 @import 'components/copyable-input';
 @import 'components/feedback';
+@import 'components/loader';
 @import 'components/uploader';
 
 @import 'layout/ide';