<template>
    <section class="app-main">
      <transition name="fade-transform" mode="out-in">

        <keep-alive :include="cachedViews">
          <router-view :key="key" />
        </keep-alive>

      </transition>
    </section>
  </template>
  
  <script>
  export default {
    name: 'AppMain',
    computed: {

      cachedViews() {
        return this.$store.state.tagsView.cachedViews
      },

      key() {
        return this.$route.path
      }
    }
  }
  </script>

  <style lang="scss" scoped>

  .app-main {

    /* 50= navbar  50  */

    min-height: calc(100vh - 50px);
    width: 100%;
    position: relative;
    overflow: hidden;
  }

  .fixed-header+.app-main {
    padding-top: 50px;
  }

  
  .hasTagsView {
    .app-main {
      /* 84 = navbar + tags-view = 50 + 34 */
      min-height: calc(100vh - 84px);
    }
  
    .fixed-header+.app-main {
      padding-top: 84px;
    }
  }

  </style>
  
  <style lang="scss">
  // fix css style bug in open el-dialog
  .el-popup-parent--hidden {
    .fixed-header {
      padding-right: 15px;
    }
  }
  </style>