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<template>
  <div v-if="showTag" class="avue-tags">
    <!-- 右键 -->
    <div v-if="contextmenuFlag"
         :style="{left:contentmenuX+'px',top:contentmenuY+'px'}"
         class="avue-tags__contentmenu">
      <div class="item"  @click="clearCacheTags">{{ $t('tagsView.clearCache') }}</div>
      <div class="item"  @click="closeOthersTags">{{ $t('tagsView.closeOthers') }}</div>
      <div class="item"  @click="closeAllTags">{{ $t('tagsView.closeAll') }}</div>
    </div>
    <div :class="{'avue-tags__box--close':!website.isFirstPage}"
         class="avue-tags__box">
      <el-tabs v-model="active"
               :closable="tagLen!==1"
               type="card"
               @edit="menuTag"
               @contextmenu.native="handleContextmenu"
               @tab-click="openTag">
        <el-tab-pane v-for="item in tagList"
                     :key="item.value"
                     :label="generateTitle(item)"
                     :name="item.value">
        </el-tab-pane>
 
      </el-tabs>
      <el-dropdown class="avue-tags__menu">
        <el-button size="mini"
                   type="primary">
          {{ $t('tagsView.menu') }}
          <i class="el-icon-arrow-down el-icon--right"></i>
        </el-button>
        <el-dropdown-menu slot="dropdown">
          <el-dropdown-item @click.native="$parent.isSearch=true">{{ $t('tagsView.search') }}</el-dropdown-item>
          <el-dropdown-item @click.native="closeOthersTags">{{ $t('tagsView.closeOthers') }}</el-dropdown-item>
          <el-dropdown-item @click.native="closeAllTags">{{ $t('tagsView.closeAll') }}</el-dropdown-item>
          <el-dropdown-item @click.native="clearCacheTags">{{ $t('tagsView.clearCache') }}</el-dropdown-item>
        </el-dropdown-menu>
      </el-dropdown>
    </div>
 
  </div>
</template>
<script>
import {mapGetters, mapState} from "vuex";
import {clearCache} from "@/api/user";
 
export default {
  name: "tags",
  data() {
    return {
      active: "",
      contentmenuX: "",
      contentmenuY: "",
      contextmenuFlag: false
    };
  },
  created() {
  },
  mounted() {
    this.setActive();
  },
  watch: {
    tag() {
      this.setActive();
    },
    contextmenuFlag() {
      window.addEventListener("mousedown", this.watchContextmenu);
    }
  },
  computed: {
    ...mapGetters(["tagWel", "tagList", "tag", "website"]),
    ...mapState({
      showTag: state => state.common.showTag
    }),
    tagLen() {
      return this.tagList.length || 0;
    }
  },
  methods: {
    generateTitle(item) {
      return this.$router.$avueRouter.generateTitle(
        item.label,
        (item.meta || {}).i18n
      );
    },
    watchContextmenu(event) {
      if (!this.$el.contains(event.target) || event.button !== 0) {
        this.contextmenuFlag = false;
      }
      window.removeEventListener("mousedown", this.watchContextmenu);
    },
    handleContextmenu(event) {
      let target = event.target;
      // 解决 https://github.com/d2-projects/d2-admin/issues/54
      let flag = false;
      if (target.className.indexOf("el-tabs__item") > -1) flag = true;
      else if (target.parentNode.className.indexOf("el-tabs__item") > -1) {
        target = target.parentNode;
        flag = true;
      }
      if (flag) {
        event.preventDefault();
        event.stopPropagation();
        this.contentmenuX = event.clientX;
        this.contentmenuY = event.clientY;
        this.tagName = target.getAttribute("aria-controls").slice(5);
        this.contextmenuFlag = true;
      }
    },
    //激活当前选项
    setActive() {
      this.active = this.tag.value;
    },
    menuTag(value, action) {
      if (action === "remove") {
        let {tag, key} = this.findTag(value);
        this.$store.commit("DEL_TAG", tag);
        if (tag.value === this.tag.value) {
          tag = this.tagList[key === 0 ? key : key - 1]; //如果关闭本标签让前推一个
          this.openTag(tag);
        }
      }
    },
    openTag(item) {
      let tag;
      if (item.name) {
        tag = this.findTag(item.name).tag;
      } else {
        tag = item;
      }
      this.$router.push({
        path: this.$router.$avueRouter.getPath({
          name: tag.label,
          src: tag.value
        }, tag.meta),
        query: tag.query
      });
    },
    closeOthersTags() {
      this.contextmenuFlag = false;
      this.$store.commit("DEL_TAG_OTHER");
    },
    findTag(value) {
      let tag, key;
      this.tagList.map((item, index) => {
        if (item.value === value) {
          tag = item;
          key = index;
        }
      });
      return {tag: tag, key: key};
    },
    closeAllTags() {
      this.contextmenuFlag = false;
      this.$store.commit("DEL_ALL_TAG");
      this.$router.push({
        path: this.$router.$avueRouter.getPath({
          src: this.tagWel.value
        }),
        query: this.tagWel.query
      });
    },
    clearCacheTags() {
      this.$confirm("是否需要清除缓存?", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).then(() => {
        // clearCache().then(() => {
        //   this.contextmenuFlag = false;
        //   this.$message.success('清除完毕');
        // })
        this.$message.success('清除完毕');
      });
    }
  }
};
</script>