将箭头添加到ag-grid agRichSelectCellEditor以使下拉功能更直观

function CustomCellRenderer() {}

CustomCellRenderer.prototype.init = function(params) {
  this.container = document.createElement('div');
  this.container.classList.add('custom-cell-renderer');

  this.arrow = document.createElement('div');
  this.arrow.classList.add('arrow');
  this.container.appendChild(this.arrow);

  this.value = document.createElement('div');
  this.value.classList.add('value');
  this.value.innerText = params.value;
  this.container.appendChild(this.value);
};

CustomCellRenderer.prototype.getGui = function() {
  return this.container;
};

CustomCellRenderer.prototype.refresh = function(params) {
  this.value.innerText = params.value;
};

CustomCellRenderer.prototype.destroy = function() {
  // 清理资源
};

var columnDefs = [
  {
    headerName: '下拉选择',
    field: 'select',
    cellEditor: 'agRichSelectCellEditor',
    cellRenderer: 'customCellRenderer',
    editable: true,
    // 其他列定义属性...
  },
  // 其他列定义...
];

var gridOptions = {
  columnDefs: columnDefs,
  frameworkComponents: {
    customCellRenderer: CustomCellRenderer,
  },
  // 其他grid选项...
};