tile-editor/palette.js at master · rokyed/tile-editor · GitHub

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import { Scenario } from "./scenario.js";
import { Tools } from "./tools.js";
import { TileElement } from "./tileElement.js";

export class XPalette extends HTMLElement {
  container = null;
  constructor() {
    super();
    this.attachShadow({ mode: "open" });
    this.shadowRoot.innerHTML = `
      <style>
        :host {
          display: block;
          overflow: hidden;
          flex: 1 1 1px;
          position: relative;
        }

        #tiles_container {
          width: 100%;
          height: 100%;
          display: flex;
          flex-wrap: wrap;
          gap: 4px;
          overflow-y: scroll;
          justify-content: center;
          border: 1px solid #333;
          border-radius: 4px;
        }

        .tile {
          width: 48px;
          height: 48px;
          outline: 1px solid #333;
          background-size: cover;
          cursor: pointer;
        }
      </style>
      <div id="tiles_container">
      </div>
      `
  }

  connectedCallback() {
    this.container= this.shadowRoot.getElementById("tiles_container");
    this.render();

    window.addEventListener("update.ui", () => {
      this.render();
    });

    this.addEventListener("click", (event) => {
      const tile = event.composedPath().find((element) => {
        return element instanceof TileElement;
      });

      if (!tile) {
        return;
      }
      let tileIndex = tile.getAttribute("data-tile-index");
      let noTile = tile.getAttribute("data-no-tile");

      if (noTile) {
        Tools.getInstance().currentBrush = null;
        window.dispatchEvent(new CustomEvent("brush.change", { detail: null}));
        return;
      }

      if (!tileIndex) {
        return;
      }

      const tileObject = Scenario.getInstance().getTileFromPalette(parseInt(tileIndex));

      Tools.getInstance().currentBrush = tileObject;
      window.dispatchEvent(new CustomEvent("brush.change", { detail: tileObject }));
    });
  }

  clearAll() {
    this.container.innerHTML = "";
  }

  renderTile(tile) {
    let tileElement = document.createElement("x-tile-element");
    tileElement.classList.add("tile");
    if (tile) {
      tileElement.setAttribute("data-tile-index", tile.getIndex());
      tileElement.setAttribute("image", tile.getImage());
    } else {
      tileElement.setAttribute('data-no-tile', true);
      tileElement.removeAttribute("image");
    }
    this.container.appendChild(tileElement);
  }

  render() {
    this.clearAll();
    const scenario = Scenario.getInstance();
    const tiles = scenario.getPalette();
    this.renderTile(null);
    tiles.forEach(tile => {
      this.renderTile(tile);
    });
  }
}

customElements.define("x-palette", XPalette);