<template>
  <section class="app-main">
    <transition
      name="fade-transform"
      mode="out-in"
    >
      <keep-alive>
        <router-view :key="key" />
      </keep-alive>
    </transition>
    <message-drawer ref="nav-usermessage" />
  </section>
</template>

<script>
import MessageDrawer from './Message'
export default {
  name: 'AppMain',
  components: {
    MessageDrawer
  },
  computed: {
    key() {
      return this.$route.path
    }
  },
  methods: {
    showMessage() {
      this.$nextTick(() => {
        this.$refs['nav-usermessage'].init()
      })
    }
  }
}
</script>

<style lang="scss" scoped>
$navHeight:75px;
.app-main {
  /* 50= navbar  50  */
  min-height: calc(100vh - 75px);
  width: 100%;
  position: relative;
  overflow: hidden;
  background-color: #071A29;
}

.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>
