MapComplete/src/UI/BigComponents/ThemeIntroPanel.svelte

<script lang="ts">
    import Translations from "../i18n/Translations";
    import Svg from "../../Svg";
    import Tr from "../Base/Tr.svelte";
    import NextButton from "../Base/NextButton.svelte";
    import Geosearch from "./Geosearch.svelte";
    import ToSvelte from "../Base/ToSvelte.svelte";
    import ThemeViewState from "../../Models/ThemeViewState";
    import { Store, UIEventSource } from "../../Logic/UIEventSource";
    import { SearchIcon } from "@rgossiaux/svelte-heroicons/solid";
    import { twJoin } from "tailwind-merge";
    import { Utils } from "../../Utils";
    import type { GeolocationPermissionState } from "../../Logic/State/GeoLocationState";
    import If from "../Base/If.svelte";

    /**
     * The theme introduction panel
     */
    export let state: ThemeViewState;
    let layout = state.layout;
    let selectedElement = state.selectedElement;
    let selectedLayer = state.selectedLayer;

    let triggerSearch: UIEventSource<any> = new UIEventSource<any>(undefined);
    let searchEnabled = false;

    let geopermission: Store<GeolocationPermissionState> =
        state.geolocation.geolocationState.permission;
    let currentGPSLocation = state.geolocation.geolocationState.currentGPSLocation;

    geopermission.addCallback((perm) => console.log(">>>> Permission", perm));

    function jumpToCurrentLocation() {
        const glstate = state.geolocation.geolocationState;
        if (glstate.currentGPSLocation.data !== undefined) {
            const c: GeolocationCoordinates = glstate.currentGPSLocation.data;
            state.guistate.themeIsOpened.setData(false);
            const coor = { lon: c.longitude, lat: c.latitude };
            state.mapProperties.location.setData(coor);
        }
        if (glstate.permission.data !== "granted") {
            glstate.requestPermission();
            return;
        }
    }
</script>

<div class="flex h-full flex-col justify-between">
  <div>
    <!-- Intro, description, ... -->
    <Tr t={layout.description} />
    <Tr t={Translations.t.general.welcomeExplanation.general} />
    {#if layout.layers.some((l) => l.presets?.length > 0)}
      <Tr t={Translations.t.general.welcomeExplanation.addNew} />
    {/if}

    <Tr t={layout.descriptionTail} />

    <!-- Buttons: open map, go to location, search -->
    <NextButton clss="primary w-full" on:click={() => state.guistate.themeIsOpened.setData(false)}>
      <div class="flex w-full justify-center text-2xl">
        <Tr t={Translations.t.general.openTheMap} />
      </div>
    </NextButton>


    <div class="flex w-full flex-wrap sm:flex-nowrap">
      <If condition={state.featureSwitches.featureSwitchGeolocation}>
        {#if $currentGPSLocation !== undefined || $geopermission === "prompt"}
          <button class="flex w-full items-center gap-x-2" on:click={jumpToCurrentLocation}>
            <ToSvelte construct={Svg.crosshair_svg().SetClass("w-8 h-8")} />
            <Tr t={Translations.t.general.openTheMapAtGeolocation} />
          </button>
          <!-- No geolocation granted - we don't show the button -->
        {:else if $geopermission === "requested"}
          <button class="disabled flex w-full items-center gap-x-2" on:click={jumpToCurrentLocation}>
            <!-- Even though disabled, when clicking we request the location again in case the contributor dismissed the location popup -->
            <ToSvelte
              construct={Svg.crosshair_svg()
              .SetClass("w-8 h-8")
              .SetStyle("animation: 3s linear 0s infinite normal none running spin;")}
            />
            <Tr t={Translations.t.general.waitingForGeopermission} />
          </button>
        {:else if $geopermission === "denied"}
          <button class="disabled flex w-full items-center gap-x-2">
            <ToSvelte construct={Svg.location_refused_svg().SetClass("w-8 h-8")} />
            <Tr t={Translations.t.general.geopermissionDenied} />
          </button>
        {:else}
          <button class="disabled flex w-full items-center gap-x-2">
            <ToSvelte
              construct={Svg.crosshair_svg()
              .SetClass("w-8 h-8")
              .SetStyle("animation: 3s linear 0s infinite normal none running spin;")}
            />
            <Tr t={Translations.t.general.waitingForLocation} />
          </button>
        {/if}
      </If>


      <If condition={state.featureSwitches.featureSwitchSearch}>
        <div class=".button low-interaction m-1 flex w-full items-center gap-x-2 rounded border p-2">
          <div class="w-full">
            <Geosearch
              bounds={state.mapProperties.bounds}
              on:searchCompleted={() => state.guistate.themeIsOpened.setData(false)}
              on:searchIsValid={(isValid) => {
              searchEnabled = isValid
            }}
              perLayer={state.perLayer}
              {selectedElement}
              {selectedLayer}
              {triggerSearch}
            />
          </div>
          <button
            class={twJoin("flex items-center justify-between gap-x-2", !searchEnabled && "disabled")}
            on:click={() => triggerSearch.ping()}
          >
            <Tr t={Translations.t.general.search.searchShort} />
            <SearchIcon class="h-6 w-6" />
          </button>
        </div>
      </If>
    </div>
  </div>

  <div class="links-as-button links-w-full m-2 flex flex-col gap-y-1">
    <!-- bottom buttons, a bit hidden away: switch layout -->
    <a class="flex" href={Utils.HomepageLink()}>
      <img class="h-6 w-6" src="./assets/svg/add.svg" />
      <Tr t={Translations.t.general.backToIndex} />
    </a>
  </div>
</div>