refactor($theme-default): extract page components (#1427)

* refactor(default-theme): Extract PageEdit component and Extract PageNav component.

Author: mathieutu

packages/@vuepress/theme-default/components/Page.vue

@@ -1,267 +1,29 @@
 <template>
   <main class="page">
-    <slot name="top"/>
+    <slot name="top" />
 
-    <Content class="theme-default-content"/>
+    <Content />
+    <PageEdit />
 
-    <footer class="page-edit">
-      <div
-        class="edit-link"
-        v-if="editLink"
-      >
-        <a
-          :href="editLink"
-          target="_blank"
-          rel="noopener noreferrer"
-        >{{ editLinkText }}</a>
-        <OutboundLink/>
-      </div>
+    <PageNav v-bind="{ sidebarItems }" />
 
-      <div
-        class="last-updated"
-        v-if="lastUpdated"
-      >
-        <span class="prefix">{{ lastUpdatedText }}: </span>
-        <span class="time">{{ lastUpdated }}</span>
-      </div>
-    </footer>
-
-    <div class="page-nav" v-if="prev || next">
-      <p class="inner">
-        <span
-          v-if="prev"
-          class="prev"
-        >
-          ←
-          <router-link
-            v-if="prev"
-            class="prev"
-            :to="prev.path"
-          >
-            {{ prev.title || prev.path }}
-          </router-link>
-        </span>
-
-        <span
-          v-if="next"
-          class="next"
-        >
-          <router-link
-            v-if="next"
-            :to="next.path"
-          >
-            {{ next.title || next.path }}
-          </router-link>
-          →
-        </span>
-      </p>
-    </div>
-
-    <slot name="bottom"/>
+    <slot name="bottom" />
   </main>
 </template>
 
 <script>
-import isString from 'lodash/isString'
-import isNil from 'lodash/isNil'
-
-import { resolvePage, outboundRE, endingSlashRE } from '../util'
+import PageEdit from '@theme/components/PageEdit.vue'
+import PageNav from '@theme/components/PageNav.vue'
 
 export default {
-  props: ['sidebarItems'],
-
-  computed: {
-    lastUpdated () {
-      return this.$page.lastUpdated
-    },
-
-    lastUpdatedText () {
-      if (typeof this.$themeLocaleConfig.lastUpdated === 'string') {
-        return this.$themeLocaleConfig.lastUpdated
-      }
-      if (typeof this.$site.themeConfig.lastUpdated === 'string') {
-        return this.$site.themeConfig.lastUpdated
-      }
-      return 'Last Updated'
-    },
-
-    prev () {
-      return resolvePageLink(LINK_TYPES.PREV, this)
-    },
-
-    next () {
-      return resolvePageLink(LINK_TYPES.NEXT, this)
-    },
-
-    editLink () {
-      if (this.$page.frontmatter.editLink === false) {
-        return
-      }
-      const {
-        repo,
-        editLinks,
-        docsDir = '',
-        docsBranch = 'master',
-        docsRepo = repo
-      } = this.$site.themeConfig
-
-      if (docsRepo && editLinks && this.$page.relativePath) {
-        return this.createEditLink(repo, docsRepo, docsDir, docsBranch, this.$page.relativePath)
-      }
-    },
-
-    editLinkText () {
-      return (
-        this.$themeLocaleConfig.editLinkText
-        || this.$site.themeConfig.editLinkText
-        || `Edit this page`
-      )
-    }
-  },
-
-  methods: {
-    createEditLink (repo, docsRepo, docsDir, docsBranch, path) {
-      const bitbucket = /bitbucket.org/
-      if (bitbucket.test(repo)) {
-        const base = outboundRE.test(docsRepo)
-          ? docsRepo
-          : repo
-        return (
-          base.replace(endingSlashRE, '')
-           + `/src`
-           + `/${docsBranch}/`
-           + (docsDir ? docsDir.replace(endingSlashRE, '') + '/' : '')
-           + path
-           + `?mode=edit&spa=0&at=${docsBranch}&fileviewer=file-view-default`
-        )
-      }
-
-      const base = outboundRE.test(docsRepo)
-        ? docsRepo
-        : `https://github.com/${docsRepo}`
-      return (
-        base.replace(endingSlashRE, '')
-        + `/edit`
-        + `/${docsBranch}/`
-        + (docsDir ? docsDir.replace(endingSlashRE, '') + '/' : '')
-        + path
-      )
-    }
-  }
-}
-
-function resolvePrev (page, items) {
-  return find(page, items, -1)
-}
-
-function resolveNext (page, items) {
-  return find(page, items, 1)
-}
-
-const LINK_TYPES = {
-  NEXT: {
-    resolveLink: resolveNext,
-    getThemeLinkConfig: ({ nextLinks }) => nextLinks,
-    getPageLinkConfig: ({ frontmatter }) => frontmatter.next
-  },
-  PREV: {
-    resolveLink: resolvePrev,
-    getThemeLinkConfig: ({ prevLinks }) => prevLinks,
-    getPageLinkConfig: ({ frontmatter }) => frontmatter.prev
-  }
-}
-
-function resolvePageLink (linkType, { $themeConfig, $page, $route, $site, sidebarItems }) {
-  const { resolveLink, getThemeLinkConfig, getPageLinkConfig } = linkType
-
-  // Get link config from theme
-  const themeLinkConfig = getThemeLinkConfig($themeConfig)
-
-  // Get link config from current page
-  const pageLinkConfig = getPageLinkConfig($page)
-
-  // Page link config will overwrite global theme link config if defined
-  const link = isNil(pageLinkConfig) ? themeLinkConfig : pageLinkConfig
-
-  if (link === false) {
-    return
-  } else if (isString(link)) {
-    return resolvePage($site.pages, link, $route.path)
-  } else {
-    return resolveLink($page, sidebarItems)
-  }
-}
-
-function find (page, items, offset) {
-  const res = []
-  flatten(items, res)
-  for (let i = 0; i < res.length; i++) {
-    const cur = res[i]
-    if (cur.type === 'page' && cur.path === decodeURIComponent(page.path)) {
-      return res[i + offset]
-    }
-  }
+  components: { PageEdit, PageNav },
+  props: ['sidebarItems']
 }
-
-function flatten (items, res) {
-  for (let i = 0, l = items.length; i < l; i++) {
-    if (items[i].type === 'group') {
-      flatten(items[i].children || [], res)
-    } else {
-      res.push(items[i])
-    }
-  }
-}
-
 </script>
 
 <style lang="stylus">
-@require '../styles/wrapper.styl'
-
-.page
-  padding-bottom 2rem
-  display block
-
-.page-edit
-  @extend $wrapper
-  padding-top 1rem
-  padding-bottom 1rem
-  overflow auto
-  .edit-link
-    display inline-block
-    a
-      color lighten($textColor, 25%)
-      margin-right 0.25rem
-  .last-updated
-    float right
-    font-size 0.9em
-    .prefix
-      font-weight 500
-      color lighten($textColor, 25%)
-    .time
-      font-weight 400
-      color #aaa
-
-.page-nav
-  @extend $wrapper
-  padding-top 1rem
-  padding-bottom 0
-  .inner
-    min-height 2rem
-    margin-top 0
-    border-top 1px solid $borderColor
-    padding-top 1rem
-    overflow auto // clear float
-  .next
-    float right
-
-@media (max-width: $MQMobile)
-  .page-edit
-    .edit-link
-      margin-bottom .5rem
-    .last-updated
-      font-size .8em
-      float none
-      text-align left
-
+.page {
+  padding-bottom: 2rem;
+  display: block;
+}
 </style>