add loading state

dist/app.css

@@ -4,6 +4,8 @@
 
 .PokemonApp__wrapper__3ZEoC{display:flex;flex-flow:column nowrap;align-items:stretch}.PokemonApp__wrapper__3ZEoC .PokemonApp__body__23cv_{background-color:#fff;display:flex;flex-flow:row nowrap;align-items:stretch;position:relative;padding-bottom:60px}.PokemonApp__wrapper__3ZEoC.PokemonApp__overlaid__3B_Ol{background-color:rgba(0,0,0,0.7)}.PokemonApp__wrapper__3ZEoC.PokemonApp__overlaid__3B_Ol .PokemonApp__highlight__1zywH{z-index:1}.PokemonApp__header__2s_s2{display:flex;flex:0 0 auto;justify-content:space-between;align-items:center;padding:0.5rem 1rem;position:sticky;top:0}.PokemonApp__header__2s_s2 a{display:inline-block;display:flex}.PokemonApp__footer__3q19Q{height:60px;position:fixed;right:0;bottom:0;left:0}.PokemonApp__header__2s_s2,.PokemonApp__footer__3q19Q{margin:0.1em;z-index:10}.PokemonApp__navigationButton__2BuiE{}.PokemonApp__navigationButton__2BuiE.PokemonApp__hamburgerIcon__1ujIT{font-size:2rem;margin-top:-6px}.PokemonApp__overlay__2vc-r{position:absolute;top:0;right:0;bottom:0;left:0;background-color:#000;opacity:.7}.PokemonApp__overlay__2vc-r.PokemonApp__complete__h3L_s{z-index:1}.PokemonApp__navigationWrapper__3oyCI{display:flex;margin:0 auto}.PokemonApp__displayWrapper__2PiN5{margin:0 auto}.PokemonApp__displayWrapper__2PiN5>*{width:450px;margin:0 1em}@media only screen and (max-width: 767px){.PokemonApp__displayWrapper__2PiN5>*{width:auto;margin:0 0.1em}}.PokemonApp__container__MsUHy{display:flex;justify-content:space-evenly}.PokemonApp__container__MsUHy .PokemonApp__leftColumn__3Lv_L,.PokemonApp__container__MsUHy .PokemonApp__rightColumn__1xE25{display:flex;flex-flow:column nowrap;align-items:center}.PokemonApp__container__MsUHy .PokemonApp__leftColumn__3Lv_L{width:45%;text-align:center}.PokemonApp__container__MsUHy .PokemonApp__rightColumn__1xE25{flex-grow:1;align-items:start}
 
+.ExplorerLoading__wrapper__MGSlF{display:flex;flex-wrap:wrap;width:480px;margin:0 auto}@media only screen and (max-width: 767px){.ExplorerLoading__wrapper__MGSlF{flex-direction:column}}.ExplorerLoading__wrapper__MGSlF .icon{animation:ExplorerLoading__bounce__F9WGl 0.6s both linear infinite}@media only screen and (max-width: 767px){.ExplorerLoading__wrapper__MGSlF .icon{margin:0 auto}}@keyframes ExplorerLoading__bounce__F9WGl{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}.ExplorerLoading__wrapper__MGSlF .icon:nth-child(2){animation-delay:0.2s}.ExplorerLoading__wrapper__MGSlF .icon:nth-child(3){animation-delay:0.4s}.ExplorerLoading__loading__kpcaU{width:100%;text-align:center;margin-top:0.5em}.ExplorerLoading__loading__kpcaU::after{position:absolute;overflow:hidden;display:inline-block;vertical-align:bottom;animation:ExplorerLoading__ellipsis__3kLb6 steps(4, end) 900ms infinite;content:"\2026";width:0}@keyframes ExplorerLoading__ellipsis__3kLb6{to{width:1.25em}}
+
 .nes-field.is-inline .IvForm__ivInput__xR5IU{width:4.25em;padding-left:0.45em;padding-right:0.25em}.nes-field.is-inline .IvForm__ivInput__xR5IU.IvForm__levelInput__1n6We{width:6.5em}.nes-field.is-inline.IvForm__fieldRow__3HcBN{font-size:0.9em;justify-content:space-between;align-items:baseline}.nes-field.is-inline.IvForm__fieldRow__3HcBN label{flex-grow:0;margin-left:1em}.nes-field.is-inline.IvForm__fieldRow__3HcBN label:first-child{margin-left:0}
 
 .LeagueSelector__wrapper__fxmRz{font-size:0.8em;display:flex;justify-content:space-around;margin:0 0 0.5rem 0}.LeagueSelector__leagueRadioLabel__3aPV9{display:flex;align-items:center}.LeagueSelector__leagueRadio__3hY7B{display:none}

src/ts/app/components/PokemonExplorer/ExplorerLoading.tsx

@@ -0,0 +1,45 @@
+import React from 'react';
+
+import classNames from 'classnames';
+
+import { formatDexNumber } from 'app/utils/formatter';
+
+import * as styles from 'app/components/PokemonExplorer/styles/ExplorerLoading.scss';
+
+export interface IExplorerLoadingProps {}
+
+export class ExplorerLoading extends React.Component<IExplorerLoadingProps> {
+
+    public render() {
+
+        const pokemonGroups = [
+            [1, 2, 3],
+            [4, 5, 6],
+            [7, 8, 9],
+            [172, 25, 26],
+            [144, 145, 146],
+        ];
+
+        const pokemonIconCss = classNames(
+            'icon',
+            'pixel',
+            'sprite',
+        );
+
+        const groupIndex = Math.floor(Math.random() * pokemonGroups.length);
+        const pokemonIcons = pokemonGroups[groupIndex].map((dex) => {
+            const pokemonCss = classNames(
+                pokemonIconCss,
+                `pokemon-${ formatDexNumber(dex) }`,
+            );
+            return <div key={ dex } className={ pokemonCss } />;
+        });
+
+        return (
+            <div className={ styles.wrapper }>
+                { pokemonIcons }
+                <h2 className={ styles.loading }>Loading</h2>
+            </div>
+        );
+    }
+}

src/ts/app/components/PokemonExplorer/PokemonExplorer.tsx

@@ -21,6 +21,7 @@ import {
 } from 'app/components/PokemonExplorer/types';
 import { IRouterProps, Navigation as NavigationType } from 'app/types';
 
+import { ExplorerLoading } from 'app/components/PokemonExplorer/ExplorerLoading';
 import { LeagueIvExplorer } from 'app/components/PokemonExplorer/LeagueIvExplorer';
 import { MovesExplorer } from 'app/components/PokemonExplorer/MovesExplorer';
 import { Navigation } from 'app/components/PokemonExplorer/Navigation';
@@ -55,6 +56,7 @@ class PokemonExplorer extends React.Component<IConnectedPokemonExplorerProps> {
             attackTypeEffectiveness,
         } = this.props;
         const {
+            isLoading,
             league,
             individualValues,
             widgets,
@@ -88,6 +90,11 @@ class PokemonExplorer extends React.Component<IConnectedPokemonExplorerProps> {
 
         return (
             <div className={ styles.body }>
+                { (leaguePokemon === null || isLoading) &&
+                    <ExplorerLoading />
+                }
+                { leaguePokemon !== null && !isLoading &&
+                    <React.Fragment>
                         <div className={ navWrapperCss }>
                             <div className={ displayWrapperCss }>
                                 { leaguePokemon !== null &&
@@ -150,6 +157,8 @@ class PokemonExplorer extends React.Component<IConnectedPokemonExplorerProps> {
                         { isOverlayShown &&
                             <div className={ overLayCss } onClick={ this.handleOverlayClick } />
                         }
+                    </React.Fragment>
+                }
             </div>
         );
     }

src/ts/app/components/PokemonExplorer/reducers.ts

@@ -6,7 +6,7 @@ import * as Actions from 'app/components/PokemonExplorer/actions';
 import { IPokemonExplorerState, PokemonExplorerActionTypes } from 'app/components/PokemonExplorer/types';
 
 export const initialState : IPokemonExplorerState = {
-    isLoading: false,
+    isLoading: true,
     leaguePokemon: null,
     widgets: {
         types: false,

src/ts/app/components/PokemonExplorer/styles/ExplorerLoading.scss

@@ -0,0 +1,61 @@
+@import '~styles/Variables.scss';
+
+.wrapper {
+  display: flex;
+  flex-wrap: wrap;
+  width: 480px;
+  margin: 0 auto;
+
+  @media only screen and (max-width: $max-mobile-width) {
+    flex-direction: column;
+  }
+
+  :global(.icon) {
+    animation: bounce 0.6s both linear infinite;
+
+    @media only screen and (max-width: $max-mobile-width) {
+      margin: 0 auto;
+    }
+
+    @keyframes bounce {
+      0%,
+      100% {
+        transform: translateY(0);
+      }
+
+      50% {
+        transform: translateY(-5px);
+      }
+    }
+
+    &:nth-child(2) {
+      animation-delay: 0.2s;
+    }
+
+    &:nth-child(3) {
+      animation-delay: 0.4s;
+    }
+  }
+}
+
+.loading {
+  width: 100%;
+  text-align: center;
+  margin-top: 0.5em;
+
+  &::after {
+    position: absolute;
+    overflow: hidden;
+    display: inline-block;
+    vertical-align: bottom;
+    animation: ellipsis steps(4, end) 900ms infinite;
+    content: "\2026"; // ascii code for the ellipsis character
+    width: 0;
+
+    @keyframes ellipsis {
+      to {
+        width: 1.25em;
+      }
+    }
+  }
+}

src/ts/app/components/PokemonExplorer/styles/ExplorerLoading.scss.d.ts

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// Please do not change this file!
+export const bounce: string;
+export const ellipsis: string;
+export const loading: string;
+export const wrapper: string;