jtBaseApp/node_modules/element-plus/es/components/table/src/table-layout.mjs

import { ref, isRef, nextTick } from 'vue';
import { isClient } from '@vueuse/core';
import '../../../utils/index.mjs';
import { parseHeight } from './util.mjs';
import { hasOwn } from '@vue/shared';

class TableLayout {
  constructor(options) {
    this.observers = [];
    this.table = null;
    this.store = null;
    this.columns = [];
    this.fit = true;
    this.showHeader = true;
    this.height = ref(null);
    this.scrollX = ref(false);
    this.scrollY = ref(false);
    this.bodyWidth = ref(null);
    this.fixedWidth = ref(null);
    this.rightFixedWidth = ref(null);
    this.gutterWidth = 0;
    for (const name in options) {
      if (hasOwn(options, name)) {
        if (isRef(this[name])) {
          this[name].value = options[name];
        } else {
          this[name] = options[name];
        }
      }
    }
    if (!this.table) {
      throw new Error("Table is required for Table Layout");
    }
    if (!this.store) {
      throw new Error("Store is required for Table Layout");
    }
  }
  updateScrollY() {
    const height = this.height.value;
    if (height === null)
      return false;
    const scrollBarRef = this.table.refs.scrollBarRef;
    if (this.table.vnode.el && scrollBarRef) {
      let scrollY = true;
      const prevScrollY = this.scrollY.value;
      scrollY = scrollBarRef.wrapRef.scrollHeight > scrollBarRef.wrapRef.clientHeight;
      this.scrollY.value = scrollY;
      return prevScrollY !== scrollY;
    }
    return false;
  }
  setHeight(value, prop = "height") {
    if (!isClient)
      return;
    const el = this.table.vnode.el;
    value = parseHeight(value);
    this.height.value = Number(value);
    if (!el && (value || value === 0))
      return nextTick(() => this.setHeight(value, prop));
    if (typeof value === "number") {
      el.style[prop] = `${value}px`;
      this.updateElsHeight();
    } else if (typeof value === "string") {
      el.style[prop] = value;
      this.updateElsHeight();
    }
  }
  setMaxHeight(value) {
    this.setHeight(value, "max-height");
  }
  getFlattenColumns() {
    const flattenColumns = [];
    const columns = this.table.store.states.columns.value;
    columns.forEach((column) => {
      if (column.isColumnGroup) {
        flattenColumns.push.apply(flattenColumns, column.columns);
      } else {
        flattenColumns.push(column);
      }
    });
    return flattenColumns;
  }
  updateElsHeight() {
    this.updateScrollY();
    this.notifyObservers("scrollable");
  }
  headerDisplayNone(elm) {
    if (!elm)
      return true;
    let headerChild = elm;
    while (headerChild.tagName !== "DIV") {
      if (getComputedStyle(headerChild).display === "none") {
        return true;
      }
      headerChild = headerChild.parentElement;
    }
    return false;
  }
  updateColumnsWidth() {
    if (!isClient)
      return;
    const fit = this.fit;
    const bodyWidth = this.table.vnode.el.clientWidth;
    let bodyMinWidth = 0;
    const flattenColumns = this.getFlattenColumns();
    const flexColumns = flattenColumns.filter((column) => typeof column.width !== "number");
    flattenColumns.forEach((column) => {
      if (typeof column.width === "number" && column.realWidth)
        column.realWidth = null;
    });
    if (flexColumns.length > 0 && fit) {
      flattenColumns.forEach((column) => {
        bodyMinWidth += Number(column.width || column.minWidth || 80);
      });
      if (bodyMinWidth <= bodyWidth) {
        this.scrollX.value = false;
        const totalFlexWidth = bodyWidth - bodyMinWidth;
        if (flexColumns.length === 1) {
          flexColumns[0].realWidth = Number(flexColumns[0].minWidth || 80) + totalFlexWidth;
        } else {
          const allColumnsWidth = flexColumns.reduce((prev, column) => prev + Number(column.minWidth || 80), 0);
          const flexWidthPerPixel = totalFlexWidth / allColumnsWidth;
          let noneFirstWidth = 0;
          flexColumns.forEach((column, index) => {
            if (index === 0)
              return;
            const flexWidth = Math.floor(Number(column.minWidth || 80) * flexWidthPerPixel);
            noneFirstWidth += flexWidth;
            column.realWidth = Number(column.minWidth || 80) + flexWidth;
          });
          flexColumns[0].realWidth = Number(flexColumns[0].minWidth || 80) + totalFlexWidth - noneFirstWidth;
        }
      } else {
        this.scrollX.value = true;
        flexColumns.forEach((column) => {
          column.realWidth = Number(column.minWidth);
        });
      }
      this.bodyWidth.value = Math.max(bodyMinWidth, bodyWidth);
      this.table.state.resizeState.value.width = this.bodyWidth.value;
    } else {
      flattenColumns.forEach((column) => {
        if (!column.width && !column.minWidth) {
          column.realWidth = 80;
        } else {
          column.realWidth = Number(column.width || column.minWidth);
        }
        bodyMinWidth += column.realWidth;
      });
      this.scrollX.value = bodyMinWidth > bodyWidth;
      this.bodyWidth.value = bodyMinWidth;
    }
    const fixedColumns = this.store.states.fixedColumns.value;
    if (fixedColumns.length > 0) {
      let fixedWidth = 0;
      fixedColumns.forEach((column) => {
        fixedWidth += Number(column.realWidth || column.width);
      });
      this.fixedWidth.value = fixedWidth;
    }
    const rightFixedColumns = this.store.states.rightFixedColumns.value;
    if (rightFixedColumns.length > 0) {
      let rightFixedWidth = 0;
      rightFixedColumns.forEach((column) => {
        rightFixedWidth += Number(column.realWidth || column.width);
      });
      this.rightFixedWidth.value = rightFixedWidth;
    }
    this.notifyObservers("columns");
  }
  addObserver(observer) {
    this.observers.push(observer);
  }
  removeObserver(observer) {
    const index = this.observers.indexOf(observer);
    if (index !== -1) {
      this.observers.splice(index, 1);
    }
  }
  notifyObservers(event) {
    const observers = this.observers;
    observers.forEach((observer) => {
      var _a, _b;
      switch (event) {
        case "columns":
          (_a = observer.state) == null ? void 0 : _a.onColumnsChange(this);
          break;
        case "scrollable":
          (_b = observer.state) == null ? void 0 : _b.onScrollableChange(this);
          break;
        default:
          throw new Error(`Table Layout don't have event ${event}.`);
      }
    });
  }
}

export { TableLayout as default };
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