Started code review + some fixes (unfinished)

[vchess.git] / client / src / components / MoveList.vue

<script>
import { store } from "@/store";
export default {
  name: "my-move-list",
  props: ["moves", "cursor", "score", "message", "firstNum"],
  watch: {
    cursor: function(newCursor) {
      if (window.innerWidth <= 767) return; //moves list is below: scrolling would hide chessboard
      // Count grouped moves until the cursor (if multi-moves):
      let groupsCount = -1;
      let curCol = undefined;
      for (let i = 0; i < newCursor; i++) {
        const m = this.moves[i];
        if (m.color != curCol) {
          groupsCount++;
          curCol = m.color;
        }
      }
      // $nextTick to wait for table > tr to be rendered
      this.$nextTick(() => {
        let rows = document.querySelectorAll("#movesList tr");
        if (rows.length > 0) {
          rows[Math.floor(Math.max(groupsCount, 0) / 2)].scrollIntoView({
            behavior: "auto",
            block: "nearest"
          });
        }
      });
    }
  },
  render(h) {
    if (this.moves.length == 0) return h("div");
    let tableContent = [];
    let moveCounter = 0;
    let tableRow = undefined;
    let moveCells = undefined;
    let curCellContent = "";
    let firstIndex = 0;
    for (let i = 0; i < this.moves.length; i++) {
      if (this.moves[i].color == "w") {
        if (i == 0 || (i > 0 && this.moves[i - 1].color == "b")) {
          if (tableRow) {
            tableRow.children = moveCells;
            tableContent.push(tableRow);
          }
          moveCells = [
            h("td", { domProps: { innerHTML: ++moveCounter + "." } })
          ];
          tableRow = h("tr", {});
          curCellContent = "";
          firstIndex = i;
        }
      }
      // Next condition is fine because even if the first move is black,
      // there will be the "..." which count as white move.
      else if (this.moves[i].color == "b" && this.moves[i - 1].color == "w")
        firstIndex = i;
      curCellContent += this.moves[i].notation;
      if (
        i < this.moves.length - 1 &&
        this.moves[i + 1].color == this.moves[i].color
      )
        curCellContent += ",";
      //color change
      else {
        moveCells.push(
          h("td", {
            domProps: { innerHTML: curCellContent },
            on: { click: () => this.gotoMove(i) },
            class: {
              "highlight-lm": this.cursor >= firstIndex && this.cursor <= i
            }
          })
        );
        curCellContent = "";
      }
    }
    // Complete last row, which might not be full:
    if (moveCells.length - 1 == 1) {
      moveCells.push(h("td", { domProps: { innerHTML: "" } }));
    }
    tableRow.children = moveCells;
    tableContent.push(tableRow);
    let rootElements = [];
    if (!!this.score && this.score != "*") {
      const scoreDiv = h(
        "div",
        {
          id: "scoreInfo",
          style: {
            display: this.score != "*" ? "block" : "none"
          }
        },
        [h("p", this.score), h("p", store.state.tr[this.message])]
      );
      rootElements.push(scoreDiv);
    }
    rootElements.push(
      h(
        "table",
        {
          class: {
            "moves-list": true
          }
        },
        tableContent
      )
    );
    return h("div", {}, rootElements);
  },
  methods: {
    gotoMove: function(index) {
      this.$emit("goto-move", index);
    }
  }
};
</script>

<style lang="sass" scoped>
.moves-list
  min-width: 250px
td.highlight-lm
  background-color: plum
</style>