添加 TagsView到当前版本

src/layout/components/TagsView/ScrollPane.vue

@@ -0,0 +1,94 @@
+<template>
+  <el-scrollbar ref="scrollContainer" :vertical="false" class="scroll-container" @wheel.native.prevent="handleScroll">
+    <slot />
+  </el-scrollbar>
+</template>
+
+<script>
+const tagAndTagSpacing = 4 // tagAndTagSpacing
+
+export default {
+  name: 'ScrollPane',
+  data() {
+    return {
+      left: 0
+    }
+  },
+  computed: {
+    scrollWrapper() {
+      return this.$refs.scrollContainer.$refs.wrap
+    }
+  },
+  mounted() {
+    this.scrollWrapper.addEventListener('scroll', this.emitScroll, true)
+  },
+  beforeDestroy() {
+    this.scrollWrapper.removeEventListener('scroll', this.emitScroll)
+  },
+  methods: {
+    handleScroll(e) {
+      const eventDelta = e.wheelDelta || -e.deltaY * 40
+      const $scrollWrapper = this.scrollWrapper
+      $scrollWrapper.scrollLeft = $scrollWrapper.scrollLeft + eventDelta / 4
+    },
+    emitScroll() {
+      this.$emit('scroll')
+    },
+    moveToTarget(currentTag) {
+      const $container = this.$refs.scrollContainer.$el
+      const $containerWidth = $container.offsetWidth
+      const $scrollWrapper = this.scrollWrapper
+      const tagList = this.$parent.$refs.tag
+
+      let firstTag = null
+      let lastTag = null
+
+      // find first tag and last tag
+      if (tagList.length > 0) {
+        firstTag = tagList[0]
+        lastTag = tagList[tagList.length - 1]
+      }
+
+      if (firstTag === currentTag) {
+        $scrollWrapper.scrollLeft = 0
+      } else if (lastTag === currentTag) {
+        $scrollWrapper.scrollLeft = $scrollWrapper.scrollWidth - $containerWidth
+      } else {
+        // find preTag and nextTag
+        const currentIndex = tagList.findIndex(item => item === currentTag)
+        const prevTag = tagList[currentIndex - 1]
+        const nextTag = tagList[currentIndex + 1]
+
+        // the tag's offsetLeft after of nextTag
+        const afterNextTagOffsetLeft = nextTag.$el.offsetLeft + nextTag.$el.offsetWidth + tagAndTagSpacing
+
+        // the tag's offsetLeft before of prevTag
+        const beforePrevTagOffsetLeft = prevTag.$el.offsetLeft - tagAndTagSpacing
+
+        if (afterNextTagOffsetLeft > $scrollWrapper.scrollLeft + $containerWidth) {
+          $scrollWrapper.scrollLeft = afterNextTagOffsetLeft - $containerWidth
+        } else if (beforePrevTagOffsetLeft < $scrollWrapper.scrollLeft) {
+          $scrollWrapper.scrollLeft = beforePrevTagOffsetLeft
+        }
+      }
+    }
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.scroll-container {
+  white-space: nowrap;
+  position: relative;
+  overflow: hidden;
+  width: 100%;
+  ::v-deep {
+    .el-scrollbar__bar {
+      bottom: 0px;
+    }
+    .el-scrollbar__wrap {
+      height: 49px;
+    }
+  }
+}
+</style>

src/layout/components/TagsView/index.vue

@@ -0,0 +1,296 @@
+<template>
+  <div id="tags-view-container" class="tags-view-container">
+    <scroll-pane ref="scrollPane" class="tags-view-wrapper" @scroll="handleScroll">
+      <router-link
+        v-for="tag in visitedViews"
+        ref="tag"
+        :key="tag.path"
+        :class="isActive(tag)?'active':''"
+        :to="{ path: tag.path, query: tag.query, fullPath: tag.fullPath }"
+        tag="span"
+        class="tags-view-item"
+        @click.middle.native="!isAffix(tag)?closeSelectedTag(tag):''"
+        @contextmenu.prevent.native="openMenu(tag,$event)"
+      >
+        {{ tag.title }}
+        <span v-if="!isAffix(tag)" class="el-icon-close" @click.prevent.stop="closeSelectedTag(tag)" />
+      </router-link>
+    </scroll-pane>
+    <ul v-show="visible" :style="{left:left+'px',top:top+'px'}" class="contextmenu">
+      <li @click="refreshSelectedTag(selectedTag)">Refresh</li>
+      <li v-if="!isAffix(selectedTag)" @click="closeSelectedTag(selectedTag)">Close</li>
+      <li @click="closeOthersTags">Close Others</li>
+      <li @click="closeAllTags(selectedTag)">Close All</li>
+    </ul>
+  </div>
+</template>
+
+<script>
+import ScrollPane from './ScrollPane'
+import path from 'path'
+import { constantRoutes } from '@/router'
+
+export default {
+  components: { ScrollPane },
+  data() {
+    return {
+      visible: false,
+      top: 0,
+      left: 0,
+      selectedTag: {},
+      affixTags: []
+    }
+  },
+  computed: {
+    visitedViews() {
+      return this.$store.state.tagsView.visitedViews
+    },
+    routes() {
+      return constantRoutes
+    }
+  },
+  watch: {
+    $route() {
+      this.addTags()
+      this.moveToCurrentTag()
+    },
+    visible(value) {
+      if (value) {
+        document.body.addEventListener('click', this.closeMenu)
+      } else {
+        document.body.removeEventListener('click', this.closeMenu)
+      }
+    }
+  },
+  mounted() {
+    this.initTags()
+    this.addTags()
+  },
+  methods: {
+    isActive(route) {
+      return route.path === this.$route.path
+    },
+    isAffix(tag) {
+      return tag.meta && tag.meta.affix
+    },
+    filterAffixTags(routes, basePath = '/') {
+      let tags = [];
+      (routes || []).forEach(route => {
+        if (route.meta && route.meta.affix) {
+          const tagPath = path.resolve(basePath, route.path)
+          tags.push({
+            fullPath: tagPath,
+            path: tagPath,
+            name: route.name,
+            meta: { ...route.meta }
+          })
+        }
+        if (route.children) {
+          const tempTags = this.filterAffixTags(route.children, route.path)
+          if (tempTags.length >= 1) {
+            tags = [...tags, ...tempTags]
+          }
+        }
+      })
+      return tags
+    },
+    initTags() {
+      console.log('this.routes', this.routes)
+      const affixTags = this.affixTags = this.filterAffixTags(this.routes)
+      console.log('affixTags', affixTags)
+      for (const tag of affixTags) {
+        // Must have tag name
+        if (tag.name) {
+          this.$store.dispatch('tagsView/addVisitedView', tag)
+        }
+      }
+    },
+    addTags() {
+      const { name } = this.$route
+      if (name) {
+        this.$store.dispatch('tagsView/addView', this.$route)
+      }
+      return false
+    },
+    moveToCurrentTag() {
+      const tags = this.$refs.tag
+      this.$nextTick(() => {
+        for (const tag of tags) {
+          if (tag.to.path === this.$route.path) {
+            this.$refs.scrollPane.moveToTarget(tag)
+            // when query is different then update
+            if (tag.to.fullPath !== this.$route.fullPath) {
+              this.$store.dispatch('tagsView/updateVisitedView', this.$route)
+            }
+            break
+          }
+        }
+      })
+    },
+    refreshSelectedTag(view) {
+      this.$store.dispatch('tagsView/delCachedView', view).then(() => {
+        console.log('view', view)
+        const { fullPath } = view
+        this.$nextTick(() => {
+          this.$router.replace({
+            path: '/redirect' + fullPath
+          })
+        })
+      })
+    },
+    closeSelectedTag(view) {
+      this.$store.dispatch('tagsView/delView', view).then(({ visitedViews }) => {
+        if (this.isActive(view)) {
+          this.toLastView(visitedViews, view)
+        }
+      })
+    },
+    closeOthersTags() {
+      this.$router.push(this.selectedTag)
+      this.$store.dispatch('tagsView/delOthersViews', this.selectedTag).then(() => {
+        this.moveToCurrentTag()
+      })
+    },
+    closeAllTags(view) {
+      this.$store.dispatch('tagsView/delAllViews').then(({ visitedViews }) => {
+        if (this.affixTags.some(tag => tag.path === view.path)) {
+          return
+        }
+        this.toLastView(visitedViews, view)
+      })
+    },
+    toLastView(visitedViews, view) {
+      const latestView = visitedViews.slice(-1)[0]
+      if (latestView) {
+        this.$router.push(latestView.fullPath)
+      } else {
+        // now the default is to redirect to the home page if there is no tags-view,
+        // you can adjust it according to your needs.
+        if (view.name === 'Dashboard') {
+          // to reload home page
+          this.$router.replace({ path: '/redirect' + view.fullPath })
+        } else {
+          this.$router.push('/')
+        }
+      }
+    },
+    openMenu(tag, e) {
+      const menuMinWidth = 105
+      const offsetLeft = this.$el.getBoundingClientRect().left // container margin left
+      const offsetWidth = this.$el.offsetWidth // container width
+      const maxLeft = offsetWidth - menuMinWidth // left boundary
+      const left = e.clientX - offsetLeft + 15 // 15: margin right
+
+      if (left > maxLeft) {
+        this.left = maxLeft
+      } else {
+        this.left = left
+      }
+
+      this.top = e.clientY
+      this.visible = true
+      this.selectedTag = tag
+    },
+    closeMenu() {
+      this.visible = false
+    },
+    handleScroll() {
+      this.closeMenu()
+    }
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.tags-view-container {
+  height: 34px;
+  width: 100%;
+  background: #fff;
+  border-bottom: 1px solid #d8dce5;
+  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, .12), 0 0 3px 0 rgba(0, 0, 0, .04);
+  .tags-view-wrapper {
+    .tags-view-item {
+      display: inline-block;
+      position: relative;
+      cursor: pointer;
+      height: 26px;
+      line-height: 26px;
+      border: 1px solid #d8dce5;
+      color: #495060;
+      background: #fff;
+      padding: 0 8px;
+      font-size: 12px;
+      margin-left: 5px;
+      margin-top: 4px;
+      &:first-of-type {
+        margin-left: 15px;
+      }
+      &:last-of-type {
+        margin-right: 15px;
+      }
+      &.active {
+        background-color: #42b983;
+        color: #fff;
+        border-color: #42b983;
+        &::before {
+          content: '';
+          background: #fff;
+          display: inline-block;
+          width: 8px;
+          height: 8px;
+          border-radius: 50%;
+          position: relative;
+          margin-right: 2px;
+        }
+      }
+    }
+  }
+  .contextmenu {
+    margin: 0;
+    background: #fff;
+    z-index: 3000;
+    position: absolute;
+    list-style-type: none;
+    padding: 5px 0;
+    border-radius: 4px;
+    font-size: 12px;
+    font-weight: 400;
+    color: #333;
+    box-shadow: 2px 2px 3px 0 rgba(0, 0, 0, .3);
+    li {
+      margin: 0;
+      padding: 7px 16px;
+      cursor: pointer;
+      &:hover {
+        background: #eee;
+      }
+    }
+  }
+}
+</style>
+
+<style lang="scss">
+//reset element css of el-icon-close
+.tags-view-wrapper {
+  .tags-view-item {
+    .el-icon-close {
+      width: 16px;
+      height: 16px;
+      vertical-align: 2px;
+      border-radius: 50%;
+      text-align: center;
+      transition: all .3s cubic-bezier(.645, .045, .355, 1);
+      transform-origin: 100% 50%;
+      &:before {
+        transform: scale(.6);
+        display: inline-block;
+        vertical-align: -3px;
+      }
+      &:hover {
+        background-color: #b4bccc;
+        color: #fff;
+      }
+    }
+  }
+}
+</style>

src/layout/components/index.js

@@ -1,3 +1,4 @@
 export { default as Navbar } from './Navbar'
 export { default as Sidebar } from './Sidebar'
 export { default as AppMain } from './AppMain'
+export { default as TagsView } from './TagsView'