App.vue

<template>
  <div id="app">
    <header-section v-if="!isEmbedded" />
    <div id="site-container" class="container">
      <nav v-if="!isEmbedded" class="breadcrumb caption bold" aria-label="breadcrumbs">
        <ul>
          <li><a href="https://creativecommons.org/">Home</a></li>
          <li class="is-active">
            <a href="#" aria-current="page">{{ $t('app.page-title') }}</a>
          </li>
        </ul>
      </nav>

      <h1 v-if="!isEmbedded" class="title is-2">
        {{ $t('chooser.heading') }}
      </h1>
      <p v-if="!isEmbedded" class="stepper-instructions body-bigger">
        {{ $t('chooser.instructions') }}
      </p>

      <div class="columns wider-gap">
        <div class="column">
          <Stepper v-model="currentStepId" @restart="restart" @done="done" />
        </div>
        <div class="column right-column">
          <!-- The right column with the recommended license should be fixed until
                     the 'LicenseUseCard' appears, when the column should scroll to make the
                     'LicenseUseCard' visible -->
          <div :class="{ 'right-column': !showLicenseUse }">
            <transition name="appear">
              <LicenseDetailsCard v-if="showLicense" />
            </transition>
            <transition name="appear">
              <LicenseUseCard
                v-if="showLicenseUse"
                ref="licenseUseCard"
                :class="{ shake: shouldShake }"
              />
            </transition>
          </div>
        </div>
      </div>
      <help-section @change="openChooserModal" />
    </div>
    <footer-section v-if="!isEmbedded" />
    <chooser-modal :active-modal="openModal" @close="closeChooserModal" />
  </div>
</template>

<script>
// TODO Reduce custom styling in favour of Vocabulary styles
import { mapMutations } from 'vuex';

import ChooserModal from './components/ChooserModal';
import HelpSection from './components/HelpSection';
import Stepper from './components/Stepper';
import HeaderSection from './components/HeaderSection';
import FooterSection from './components/FooterSection';
import LicenseDetailsCard from './components/LicenseDetailsCard';
import i18n from './i18n';
import createStore from './store';
const store = createStore({});

export default {
  name: 'App',
  store,
  i18n,
  components: {
    HelpSection,
    Stepper,
    LicenseDetailsCard,
    LicenseUseCard: () => import('@/components/LicenseUseCard'),
    HeaderSection,
    FooterSection,
    ChooserModal,
  },
  data() {
    return {
      isEmbedded: process.env.VUE_APP_CC_OUTPUT === 'embedded' ?? false,
      currentStepId: 0,
      openModal: null,
      showLicense: false,
      shouldShake: false,
      windowWidth: window.innerWidth,
    };
  },
  computed: {
    showLicenseUse() {
      return this.currentStepId === 8;
    },
    isBelowTabletWidth() {
      return this.windowWidth < 769;
    },
  },
  watch: {
    /**
     * When the new step opens, the page is scrolled to the top of the
     * previous step. When the 'Back' button is clicked, the page is
     * scrolled to the previous step.
     * When the user chooses No attribution, the page is scrolled to the first
     * of the following disabled steps, i.e. step 2 (NC).
     */
    async currentStepId(newId, oldId) {
      const stepToScroll =
        newId === 6 && oldId === 1 ? 2 : Math.min(newId, oldId);
      await this.$nextTick();
      // By default, scroll is cancelled when the user clicks enter. We want to override that
      // so that the stepper scrolls for users using keyboard navigation.
      this.$scrollTo(`.step-${stepToScroll}`, { cancelable: false });
    },
  },
  mounted() {
    this.$nextTick(() => {
      window.addEventListener('resize', this.onResize);
    });
  },
  beforeDestroy() {
    window.removeEventListener('resize', this.onResize);
  },
  created: function() {
    this.$store.subscribe(mutation => {
      if (
        mutation.type === 'updateAttributesFromShort' ||
        mutation.type === 'setSelected'
      ) {
        this.showLicense = true;
      }
    });
  },
  methods: {
    ...mapMutations(['setAttributionType']),
    /**
     *  When user clicks restart, we set the active step to 0, so the stepper opens
     *  the first step. We don't, however, delete the information the user entered,
     *  so all the steps have previously selected options, and attribution information
     *  is filled as it was previously.
     */
    restart() {
      this.currentStepId = 0;
      this.showLicense = 0;
      this.setAttributionType('short');
    },
    /**
     * When the user clicks `Done`, we scroll to the 'Mark your work' section ('LicenseUseCard')
     * and shake it. Shaking animation is triggered by adding 'shake' class to the section, and removing it
     * after a timeout. On mobile, we add a timeout for shaking because the page will first to make the
     * section visible.
     */
    done() {
      const scrollDuration = this.isBelowTabletWidth ? 3000 : 800;
      const shakeDuration = 3000 + scrollDuration;
      const comp = this;
      setTimeout(() => {
        comp.shouldShake = true;
      }, scrollDuration - 400);
      setTimeout(() => {
        comp.shouldShake = false;
      }, shakeDuration);
      this.$scrollTo(this.$refs.licenseUseCard.$el, scrollDuration, {
        cancelable: false,
      });
    },
    onResize() {
      this.windowWidth = window.innerWidth;
    },
    openChooserModal(modal) {
      this.openModal = modal;
    },
    closeChooserModal() {
      this.openModal = null;
    },
  },
};
</script>
<style lang="scss">

#app {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #333333;
  counter-reset: step-counter;
  background-color: #f5f5f5;
}
#site-container {
  padding: 0.75rem;

  --border-width: 0.125rem;
}
#site-container .breadcrumb {
  margin-bottom: 2rem;
}
#site-container h2 {
  letter-spacing: 0.05rem;
}
.stepper-instructions {
  margin-top: 0.5rem;
  margin-bottom: 2.75rem;
}
.columns.wider-gap {
  --outer-padding: 1rem;
  --inner-padding: 1.5rem;
}
.columns.wider-gap .column:first-child {
  padding-left: var(--outer-padding);
  padding-right: var(--inner-padding);
}
.columns.wider-gap .column:last-child {
  padding-right: var(--outer-padding);
  padding-left: var(--inner-padding);
}
.fixed-right-column {
  position: sticky;
  top: 10px;
}
.selected-license-card {
  // Margin is added to make the left column long enough
  // for the right column to stay sticky when scrolling
  margin-bottom: 32px;
}
footer.main-footer {
  margin-top: 2rem;
}
@media only screen and (min-width: 769px) {
  #site-container {
    padding-top: 2rem;
  }
  footer.main-footer {
    margin-top: 5rem;
  }
}
@media only screen and (min-width: 1024px) {
  #site-container {
    padding-left: 0;
    padding-right: 0;
  }
}
@media only screen and (max-width: 768px) {
  #site-container {
    padding-right: 1.375rem;
    padding-left: 1.375rem;
  }
  #site-container h2,
  #site-container h3 {
    font-size: 1.4375rem;
  }
  .body-bigger {
    font-size: 1rem;
  }
  .stepper-instructions {
    // margin-bottom: 2rem;
  }
  .columns.wider-gap .column:first-child,
  .columns.wider-gap .column:last-child {
    padding-right: 0.75rem;
    padding-left: 0.75rem;
  }
}
.appear-enter-active {
  transition: opacity 0.6s ease;
}
.appear-leave-active {
  transition: opacity 0.3s cubic-bezier(1, 0.5, 0.8, 1);
}
.appear-enter,
.appear-leave-to {
  opacity: 0;
}
</style>