@angular/cdk
Version:
Angular Material Component Development Kit
123 lines • 16.9 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { ChangeDetectionStrategy, Component, Inject, Input, Optional, ViewChild, ViewEncapsulation, isDevMode, } from '@angular/core';
import { CdkCellDef, CdkColumnDef, CdkHeaderCellDef } from './cell';
import { CdkTable } from './table';
import { getTableTextColumnMissingParentTableError, getTableTextColumnMissingNameError, } from './table-errors';
import { TEXT_COLUMN_OPTIONS } from './tokens';
/**
* Column that simply shows text content for the header and row cells. Assumes that the table
* is using the native table implementation (`<table>`).
*
* By default, the name of this column will be the header text and data property accessor.
* The header text can be overridden with the `headerText` input. Cell values can be overridden with
* the `dataAccessor` input. Change the text justification to the start or end using the `justify`
* input.
*/
export class CdkTextColumn {
constructor(_table, _options) {
this._table = _table;
this._options = _options;
/** Alignment of the cell values. */
this.justify = 'start';
this._options = _options || {};
}
/** Column name that should be used to reference this column. */
get name() {
return this._name;
}
set name(name) {
this._name = name;
// With Ivy, inputs can be initialized before static query results are
// available. In that case, we defer the synchronization until "ngOnInit" fires.
this._syncColumnDefName();
}
ngOnInit() {
this._syncColumnDefName();
if (this.headerText === undefined) {
this.headerText = this._createDefaultHeaderText();
}
if (!this.dataAccessor) {
this.dataAccessor =
this._options.defaultDataAccessor || ((data, name) => data[name]);
}
if (this._table) {
// Provide the cell and headerCell directly to the table with the static `ViewChild` query,
// since the columnDef will not pick up its content by the time the table finishes checking
// its content and initializing the rows.
this.columnDef.cell = this.cell;
this.columnDef.headerCell = this.headerCell;
this._table.addColumnDef(this.columnDef);
}
else {
throw getTableTextColumnMissingParentTableError();
}
}
ngOnDestroy() {
if (this._table) {
this._table.removeColumnDef(this.columnDef);
}
}
/**
* Creates a default header text. Use the options' header text transformation function if one
* has been provided. Otherwise simply capitalize the column name.
*/
_createDefaultHeaderText() {
const name = this.name;
if (isDevMode() && !name) {
throw getTableTextColumnMissingNameError();
}
if (this._options && this._options.defaultHeaderTextTransform) {
return this._options.defaultHeaderTextTransform(name);
}
return name[0].toUpperCase() + name.slice(1);
}
/** Synchronizes the column definition name with the text column name. */
_syncColumnDefName() {
if (this.columnDef) {
this.columnDef.name = this.name;
}
}
}
CdkTextColumn.decorators = [
{ type: Component, args: [{
selector: 'cdk-text-column',
template: `
<ng-container cdkColumnDef>
<th cdk-header-cell *cdkHeaderCellDef [style.text-align]="justify">
{{headerText}}
</th>
<td cdk-cell *cdkCellDef="let data" [style.text-align]="justify">
{{dataAccessor(data, name)}}
</td>
</ng-container>
`,
encapsulation: ViewEncapsulation.None,
// Change detection is intentionally not set to OnPush. This component's template will be provided
// to the table to be inserted into its view. This is problematic when change detection runs since
// the bindings in this template will be evaluated _after_ the table's view is evaluated, which
// mean's the template in the table's view will not have the updated value (and in fact will cause
// an ExpressionChangedAfterItHasBeenCheckedError).
// tslint:disable-next-line:validate-decorators
changeDetection: ChangeDetectionStrategy.Default
},] }
];
CdkTextColumn.ctorParameters = () => [
{ type: CdkTable, decorators: [{ type: Optional }] },
{ type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [TEXT_COLUMN_OPTIONS,] }] }
];
CdkTextColumn.propDecorators = {
name: [{ type: Input }],
headerText: [{ type: Input }],
dataAccessor: [{ type: Input }],
justify: [{ type: Input }],
columnDef: [{ type: ViewChild, args: [CdkColumnDef, { static: true },] }],
cell: [{ type: ViewChild, args: [CdkCellDef, { static: true },] }],
headerCell: [{ type: ViewChild, args: [CdkHeaderCellDef, { static: true },] }]
};
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Assumes that the table\n * is using the native table implementation (`<table>`).\n *\n * By default, the name of this column will be the header text and data property accessor.\n * The header text can be overridden with the `headerText` input. Cell values can be overridden with\n * the `dataAccessor` input. Change the text justification to the start or end using the `justify`\n * input.\n */\n@Component({\n  selector: 'cdk-text-column',\n  template: `\n    <ng-container cdkColumnDef>\n      <th cdk-header-cell *cdkHeaderCellDef [style.text-align]=\"justify\">\n        {{headerText}}\n      </th>\n      <td cdk-cell *cdkCellDef=\"let data\" [style.text-align]=\"justify\">\n        {{dataAccessor(data, name)}}\n      </td>\n    </ng-container>\n  `,\n  encapsulation: ViewEncapsulation.None,\n  // Change detection is intentionally not set to OnPush. This component's template will be provided\n  // to the table to be inserted into its view. This is problematic when change detection runs since\n  // the bindings in this template will be evaluated _after_ the table's view is evaluated, which\n  // mean's the template in the table's view will not have the updated value (and in fact will cause\n  // an ExpressionChangedAfterItHasBeenCheckedError).\n  // tslint:disable-next-line:validate-decorators\n  changeDetection: ChangeDetectionStrategy.Default,\n})\nexport class CdkTextColumn<T> implements OnDestroy, OnInit {\n  /** Column name that should be used to reference this column. */\n  @Input()\n  get name(): string {\n    return this._name;\n  }\n  set name(name: string) {\n    this._name = name;\n\n    // With Ivy, inputs can be initialized before static query results are\n    // available. In that case, we defer the synchronization until \"ngOnInit\" fires.\n    this._syncColumnDefName();\n  }\n  _name: string;\n\n  /**\n   * Text label that should be used for the column header. If this property is not\n   * set, the header text will default to the column name with its first letter capitalized.\n   */\n  @Input() headerText: string;\n\n  /**\n   * Accessor function to retrieve the data rendered for each cell. If this\n   * property is not set, the data cells will render the value found in the data's property matching\n   * the column's name. For example, if the column is named `id`, then the rendered value will be\n   * value defined by the data's `id` property.\n   */\n  @Input() dataAccessor: (data: T, name: string) => string;\n\n  /** Alignment of the cell values. */\n  @Input() justify: 'start'|'end' = 'start';\n\n  /** @docs-private */\n  @ViewChild(CdkColumnDef, {static: true}) columnDef: CdkColumnDef;\n\n  /**\n   * The column cell is provided to the column during `ngOnInit` with a static query.\n   * Normally, this will be retrieved by the column using `ContentChild`, but that assumes the\n   * column definition was provided in the same view as the table, which is not the case with this\n   * component.\n   * @docs-private\n   */\n  @ViewChild(CdkCellDef, {static: true}) cell: CdkCellDef;\n\n  /**\n   * The column headerCell is provided to the column during `ngOnInit` with a static query.\n   * Normally, this will be retrieved by the column using `ContentChild`, but that assumes the\n   * column definition was provided in the same view as the table, which is not the case with this\n   * component.\n   * @docs-private\n   */\n  @ViewChild(CdkHeaderCellDef, {static: true}) headerCell: CdkHeaderCellDef;\n\n  constructor(\n      @Optional() private _table: CdkTable<T>,\n      @Optional() @Inject(TEXT_COLUMN_OPTIONS) private _options: TextColumnOptions<T>) {\n    this._options = _options || {};\n  }\n\n  ngOnInit() {\n    this._syncColumnDefName();\n\n    if (this.headerText === undefined) {\n      this.headerText = this._createDefaultHeaderText();\n    }\n\n    if (!this.dataAccessor) {\n      this.dataAccessor =\n          this._options.defaultDataAccessor || ((data: T, name: string) => (data as any)[name]);\n    }\n\n    if (this._table) {\n      // Provide the cell and headerCell directly to the table with the static `ViewChild` query,\n      // since the columnDef will not pick up its content by the time the table finishes checking\n      // its content and initializing the rows.\n      this.columnDef.cell = this.cell;\n      this.columnDef.headerCell = this.headerCell;\n      this._table.addColumnDef(this.columnDef);\n    } else {\n      throw getTableTextColumnMissingParentTableError();\n    }\n  }\n\n  ngOnDestroy() {\n    if (this._table) {\n      this._table.removeColumnDef(this.columnDef);\n    }\n  }\n\n  /**\n   * Creates a default header text. Use the options' header text transformation function if one\n   * has been provided. Otherwise simply capitalize the column name.\n   */\n  _createDefaultHeaderText() {\n    const name = this.name;\n\n    if (isDevMode() && !name) {\n      throw getTableTextColumnMissingNameError();\n    }\n\n    if (this._options && this._options.defaultHeaderTextTransform) {\n      return this._options.defaultHeaderTextTransform(name);\n    }\n\n    return name[0].toUpperCase() + name.slice(1);\n  }\n\n  /** Synchronizes the column definition name with the text column name. */\n  private _syncColumnDefName() {\n    if (this.columnDef) {\n      this.columnDef.name = this.name;\n    }\n  }\n}\n"]}