<template>
  <transition name="fade">
    <div class="notice" v-if="showNotice">
      <span @click="stopOperation">{{ noticeText }}</span>
    </div>
  </transition>
</template>

<style lang="sass" scoped>
.notice
  position: absolute
  top: 0
  width: 100%
  text-align: center
  z-index: 1
  font-size: 11px
  line-height: 11px
  > span
    opacity: 0.5
    background: white
    display: inline-block
    border-bottom-right-radius: 0.25rem
    border-bottom-left-radius: 0.25rem
    padding: 3px 5px
</style>

<script>
/* This is Free Software under GNU Affero General Public License v >= 3.0
 * without warranty, see README.md and license for details.
 *
 * SPDX-License-Identifier: AGPL-3.0-or-later
 * License-Filename: LICENSES/AGPL-3.0.txt
 *
 * Copyright (C) 2018 by via donau
 *   – Österreichische Wasserstraßen-Gesellschaft mbH
 * Software engineering by Intevation GmbH
 *
 * Author(s):
 * Markus Kottländer <markus.kottlaender@intevation.de>
 */

import { mapState } from "vuex";

export default {
  computed: {
    ...mapState("application", ["paneSetup"]),
    ...mapState("map", [
      "openLayersMaps",
      "lineToolEnabled",
      "polygonToolEnabled",
      "cutToolEnabled"
    ]),
    showNotice() {
      return (
        this.lineToolEnabled ||
        this.polygonToolEnabled ||
        this.cutToolEnabled ||
        this.paneSetup.includes("COMPARESURVEYS")
      );
    },
    noticeText() {
      if (
        this.lineToolEnabled ||
        this.polygonToolEnabled ||
        this.cutToolEnabled
      ) {
        return this.$gettext("Press ESC to stop drawing.");
      } else if (this.paneSetup.includes("COMPARESURVEYS")) {
        return this.$gettext("Press ESC to close compare view.");
      }
    }
  },
  methods: {
    closeCompareView() {
      this.$store.commit("fairwayprofile/additionalSurvey", null);
    },
    stopDrawing() {
      this.$store.commit("map/lineToolEnabled", false);
      this.$store.commit("map/polygonToolEnabled", false);
      this.$store.commit("map/cutToolEnabled", false);
      this.$store.commit("map/setCurrentMeasurement", null);
      this.openLayersMaps.forEach(m => {
        m.getLayer("DRAWTOOL")
          .getSource()
          .clear();
      });
    },
    stopOperation() {
      if (
        this.lineToolEnabled ||
        this.polygonToolEnabled ||
        this.cutToolEnabled
      ) {
        this.stopDrawing();
      } else if (this.paneSetup.includes("COMPARESURVEYS")) {
        this.closeCompareView();
      }
    }
  },
  mounted() {
    window.addEventListener("keydown", e => {
      // Escape
      if (e.key === "Esc" || e.key === "Escape") this.stopOperation();
    });
  }
};
</script>