svogv
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A decorator based approach for model driven forms, including an advanced DataGrid and a TreeView component.
199 lines • 31.1 kB
JavaScript
import { Component, Input, ViewChild, ContentChild, TemplateRef, EventEmitter, Output } from '@angular/core';
import { DataGridModel, Direction } from './models/datagrid.model';
/**
* A classic data grid. You provide a model to handle all features. The model is build from a
* simple array of objects with decorators.
*
* > See 'Documentation and Examples' tab for a complete documentation.
*
* ### Summary
*
* The datagrid provides basic functions for data tables:
*
* * sorting
* * filtering
* * pagination
* * editing
*
* Provide an decorator enhanced model and the grid appears driven by model meta data.
*
* There are many attributes and ways to change the appearance. Also some classes can be controlled by
* the host component:
*
* * `.col-borders`
* * `.col-last`
* * `.col-first`
*
* All these styles are applied to the <col> elements of the underlying table.
*
* The model used in the example is an array of objects, where the properties are decorated with
* various decorators used to control the grid's render behavior.
*
* ~~~typescript
* const data: UserViewModel[] = this.dataSource; // provide a simple array here
* this.model = new DataGridModel<UserViewModel>(data, UserViewModel);
* ~~~
*
* The class {@link DataGridModel} controls the grid. You must provide a viewmodel, this is mandatory. The viewmodel is being examined at runtime,
* so assure you provide a class and set all properties to a default to force creation of properties.
*
* ~~~typescript
* export class UserViewModel {
* email: string = ''; // the = '' is necessary!
* // more omitted for brevity
* }
* ~~~
*
* The grid can be extended with the {@link DataGridPaginationComponent} to page through huge data sets. The model
* handles the pagination, the additional {@link DataGridPaginationComponent} is only a predefined renderer that
* supports the used theme.
*
* <example-url>/#/widget/grid</example-url>
*
* @example
* <ac-datagrid
* [model]="model"
* [showActions]="false"
* [columnStyle]=""
* ></ac-datagrid>
*/
export class DataGridComponent {
constructor() {
/**
* @ignore
*/
this.directionEnumHelper = Direction;
this.externals = {};
/**
* Show the action column at all. Use {@link showDeleteButton and @see showEditButton to switch the}buttons
* on or off individually. Default is `true` (actions visible).
*/
this.showActions = true;
/**
* The text that appears on the Delete button. Default is 'Delete'.
*/
this.textDeleteButton = 'Delete';
/**
* The text that appears on the Edit button. Default is 'Edit'.
*/
this.textEditButton = 'Edit';
/**
* The column header of the column that shows the buttons. Default is 'Actions'.
*/
this.textButtonsHeader = 'Actions';
/**
* The text that appears if there are no items to show. Can also be overwritten by a more complex piece
* of code by adding a template like this:
*
* @example
* <ng-template #data-warning-noitems>
* <div class="alert alert-danger">The grid is empty</div>
* </ng-template>
*/
this.textNoItems = 'There are no items to show';
/**
* Event forwarded from model class and being fired after the model class's onEdit event.
* The event is invoked by the appropriate internal button via click.
*/
this.editItem = new EventEmitter();
/**
* Event forwarded from model class and being fired after the model class's onDelete event.
* The event is invoked by the appropriate internal button via click.
*/
this.deleteItem = new EventEmitter();
// tslint:disable-next-line:member-ordering
/**
* @ignore
*/
this.warnProp = {};
}
/**
* The filter value to filter the content. The data is of type `{ [prop: string]: any }`.
*
* @param value A dictionary with filter instructions as shown below. The filter logic applies one after another, like an __AND__ conjunction.
*
* @example
* {
* "email": "paul@sample.com"
* "name": "Paul"
* }
*
*/
set filter(value) {
if (this.model) {
this.model.searchValue = value;
}
}
ngAfterViewInit() {
if (this.model) {
this.model.onEdit.subscribe(item => this.editItem.emit(item));
this.model.onDelete.subscribe(item => this.deleteItem.emit(item));
}
}
ngOnDestroy() {
if (this.model) {
this.model.onEdit.unsubscribe();
this.model.onDelete.unsubscribe();
}
}
/**
* @ignore
* Controls the template used to display certain data types.
* If the host provides a template it's being used, otherwise a fallback is provided
* @param uiHint Property of {@link UiHint} decorator
*/
getActiveTemplate(uiHint, prop) {
if (this[uiHint]) {
// if provided by user via ContentChild and overwriting defaults (string == string etc.)
return this[uiHint];
}
if (this.externals[uiHint]) {
// if provided by user via ContentChild but completely replaced
return this.externals[uiHint];
}
if (this[`${uiHint}Fallback`]) {
// otherwise we take ours from ng-template via ViewChild
return this[`${uiHint}Fallback`];
}
// if we go here the model requested a custom template that didn't exists
if (this.warnProp[prop] !== uiHint) {
console.warn(`Property ${prop} requested the template ${uiHint}, but it wasn't provided. Falling back to "string".`);
this.warnProp[prop] = uiHint;
}
return this.stringFallback;
}
}
DataGridComponent.decorators = [
{ type: Component, args: [{
selector: 'ac-datagrid',
template: "<div class=\"row\" *ngIf=\"model && model.headers\">\n <div class=\"col-md-12\">\n <table class=\"table table-condensed\">\n <colgroup class=\"colborders\" [ngStyle]=\"columnStyle ? columnStyle.group : null\">\n <col class=\"first\" [ngStyle]=\"columnStyle ? columnStyle.first : null\" />\n <col class=\"middle\" [ngStyle]=\"columnStyle ? columnStyle.middle : null\" />\n <col class=\"middle\" [ngStyle]=\"columnStyle ? columnStyle.middle : null\" />\n <col class=\"middle\" [ngStyle]=\"columnStyle ? columnStyle.middle : null\" />\n <col class=\"last\" [ngStyle]=\"columnStyle ? columnStyle.last : null\" />\n </colgroup>\n <thead>\n <tr [ngStyle]=\"columnStyle ? columnStyle.header : null\" >\n <th *ngFor=\"let header of model.headers\"\n [ngClass]=\"{ 'sortableHeader': header.isSortable }\"\n [ngStyle]=\"header.uiHint || {}\"\n [title]=\"header.desc\"\n (click)=\"header.isSortable ? model.sortColumn(header.prop, null, header.sortCallback) : null\">\n <span class=\"headerText\">{{ header.text }}</span>\n <span class=\"sort\" [ngStyle]=\"columnStyle ? columnStyle.headerButton : null\" *ngIf=\"header.isSortable\">\n <button (click)=\"model.sortColumn(header.prop, directionEnumHelper.Ascending, header.sortCallback)\"\n class=\"up\"\n [hidden]=\"model.sortDirection[header.prop] === directionEnumHelper.Descending\"\n [ngStyle]=\"columnStyle ? columnStyle.headerSortButton : null\">\n <i class=\"fa fa-sort-asc\"></i>\n </button>\n <button (click)=\"model.sortColumn(header.prop, directionEnumHelper.Descending, header.sortCallback)\"\n class=\"down\"\n [hidden]=\"model.sortDirection[header.prop] === directionEnumHelper.Ascending\"\n [ngStyle]=\"columnStyle ? columnStyle.headerSortButton : null\">\n <i class=\"fa fa-sort-desc\"></i>\n </button>\n </span>\n </th>\n <th *ngIf=\"showActions\">\n {{ textButtonsHeader }}\n </th>\n </tr>\n </thead>\n <tbody>\n <tr *ngIf=\"!model.totalFilteredRows\">\n <td [attr.colspan]=\"model.headers.length\" class=\"text-center\">\n <div class=\"alert alert-warning\">\n <span #warningNoItems>\n <ng-content select=\"[data-warning-noitems]\"></ng-content>\n </span>\n <ng-container *ngIf=\"!warningNoItems.innerHTML.trim()\">{{ textNoItems }}</ng-container>\n </div>\n </td>\n </tr>\n <tr *ngFor=\"let item of model.itemsOnCurrentPage\">\n <td *ngFor=\"let header of model.headers\">\n <ng-container\n [ngTemplateOutlet]=\"getActiveTemplate(header.templateHint, header.prop)\"\n [ngTemplateOutletContext]=\"{ $implicit: item[header.prop], pipe: header.pipe, params: header.pipeParams }\"\n ></ng-container>\n </td>\n <td *ngIf=\"showActions\" [ngStyle]=\"columnStyle ? columnStyle.actionCell : null\" >\n <button class=\"btn btn-primary btn-sm\" type=\"button\" (click)=\"model.editItem(item)\">\n {{ textEditButton }}\n </button>\n <button class=\"btn btn-danger btn-sm\" type=\"button\" (click)=\"model.deleteItem(item)\">\n {{ textDeleteButton }}\n </button>\n </td>\n </tr>\n </tbody>\n <tfoot>\n <tr [ngStyle]=\"columnStyle ? columnStyle.footer : null\" >\n <td [attr.colspan]=\"model.headers.length + (showActions ? 1 : 0)\">\n <div #footerRef>\n <ng-content select=\"[data-footer]\"></ng-content>\n </div>\n <ng-container *ngIf=\"!footerRef.innerHTML.trim()\">©</ng-container>\n </td>\n </tr>\n </tfoot>\n </table>\n </div>\n</div>\n<ng-template #string let-data let-modelpipe=\"pipe\" let-params=\"params\">\n {{ data | formatData: modelpipe: params }}\n</ng-template>\n<ng-template #boolean let-data>\n <input type=\"checkbox\" disabled [checked]=\"data\" />\n</ng-template>\n<ng-template #date let-data let-modelpipe=\"pipe\" let-params=\"params\">\n {{ data | formatData: modelpipe: params }}\n</ng-template>\n<ng-template #enum let-data>\n {{ data }}\n</ng-template>\n<ng-template #number let-data let-modelpipe=\"pipe\" let-params=\"params\">\n {{ data | formatData: modelpipe: params }}\n</ng-template>\n",
styles: [".colborders col{border-right:1px solid azure}col.last{border-right:none!important}col.first{background-color:#eee}th{background:none}th.sortableHeader{cursor:pointer}.headerText{display:inline-block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sort{float:right}.sort button{background-color:transparent!important;border:0;border-radius:0;cursor:pointer;height:16px;padding:1px;width:16px}.sort button.up{left:0}.sort button.down{left:-16px}.rearrange{background-color:transparent;border:none;float:right;height:16px;margin:2px;width:16px}"]
},] }
];
DataGridComponent.propDecorators = {
stringFallback: [{ type: ViewChild, args: ['string', { static: true },] }],
string: [{ type: ContentChild, args: ['string', { static: true },] }],
booleanFallback: [{ type: ViewChild, args: ['boolean', { static: true },] }],
boolean: [{ type: ContentChild, args: ['boolean', { static: true },] }],
dateFallback: [{ type: ViewChild, args: ['date', { static: true },] }],
date: [{ type: ContentChild, args: ['date', { static: true },] }],
enumFallback: [{ type: ViewChild, args: ['enum', { static: true },] }],
enum: [{ type: ContentChild, args: ['enum', { static: true },] }],
numberFallback: [{ type: ViewChild, args: ['number', { static: true },] }],
number: [{ type: ContentChild, args: ['number', { static: true },] }],
externals: [{ type: Input }],
columnStyle: [{ type: Input }],
model: [{ type: Input }],
showDeleteButton: [{ type: Input }],
showEditButton: [{ type: Input }],
showActions: [{ type: Input }],
textDeleteButton: [{ type: Input }],
textEditButton: [{ type: Input }],
textButtonsHeader: [{ type: Input }],
textNoItems: [{ type: Input }],
filter: [{ type: Input }],
reArrangeColumns: [{ type: Input }],
editItem: [{ type: Output }],
deleteItem: [{ type: Output }]
};
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You provide a model to handle all features. The model is build from a\n * simple array of objects with decorators.\n *\n * > See 'Documentation and Examples' tab for a complete documentation.\n *\n * ### Summary\n *\n * The datagrid provides basic functions for data tables:\n *\n * * sorting\n * * filtering\n * * pagination\n * * editing\n *\n * Provide an decorator enhanced model and the grid appears driven by model meta data.\n *\n * There are many attributes and ways to change the appearance. Also some classes can be controlled by\n * the host component:\n *\n * * `.col-borders`\n * * `.col-last`\n * * `.col-first`\n *\n * All these styles are applied to the <col> elements of the underlying table.\n *\n * The model used in the example is an array of objects, where the properties are decorated with\n * various decorators used to control the grid's render behavior.\n *\n * ~~~typescript\n * const data: UserViewModel[] = this.dataSource; // provide a simple array here\n *  this.model = new DataGridModel<UserViewModel>(data, UserViewModel);\n * ~~~\n *\n * The class {@link DataGridModel} controls the grid. You must provide a viewmodel, this is mandatory. The viewmodel is being examined at runtime,\n * so assure you provide a class and set all properties to a default to force creation of properties.\n *\n * ~~~typescript\n * export class UserViewModel {\n *  email: string = ''; // the = '' is necessary!\n *  // more omitted for brevity\n * }\n * ~~~\n *\n * The grid can be extended with the {@link DataGridPaginationComponent} to page through huge data sets. The model\n * handles the pagination, the additional {@link DataGridPaginationComponent} is only a predefined renderer that\n * supports the used theme.\n *\n * <example-url>/#/widget/grid</example-url>\n *\n * @example\n *  <ac-datagrid\n *      [model]=\"model\"\n *      [showActions]=\"false\"\n *      [columnStyle]=\"\"\n *  ></ac-datagrid>\n */\n@Component({\n  selector: 'ac-datagrid',\n  templateUrl: './datagrid.component.html',\n  styleUrls: ['./datagrid.component.scss']\n})\nexport class DataGridComponent implements AfterViewInit, OnDestroy {\n\n  /**\n   * @ignore\n   */\n  public directionEnumHelper = Direction;\n\n  /**\n   * Access to the string renderer fallback template. The template used internally looks like shown in the example\n   * That means, it renders data \"as is\", but can be modified by handling a custom pipe. To apply such\n   * a pipe, your viewmodel's properties must be decorated with the {@link FormatPipe} decorator.\n   *\n   * __Template code:__\n   * ~~~~~~~~\n   * <ng-template #string let-data let-modelpipe=\"pipe\" let-params=\"params\">\n   *  {{ data | formatData: modelpipe: params }}\n   * </ng-template>\n   * ~~~~~~~~\n   *\n   */\n  @ViewChild('string', { static: true }) public stringFallback: TemplateRef<any>;\n\n  /**\n   * You can provide a custom template to override the fallback and render a field's data completely on your own.\n   */\n  @ContentChild('string', { static: true }) public string: TemplateRef<any>;\n\n  /**\n   * Access to the boolean renderer fallback template. The template used internally looks like shown in the example.\n   *\n   * __Template code:__\n   * ~~~~~~~~\n   * <ng-template #boolean let-data>\n   *   <input type=\"checkbox\" disabled [checked]=\"data\" />\n   * </ng-template>\n   * ~~~~~~~~\n   *\n   */\n  @ViewChild('boolean', { static: true }) public booleanFallback: TemplateRef<any>;\n\n  /**\n   * You can provide a custom template to override the fallback and render a field's data completely on your own.\n   */\n  @ContentChild('boolean', { static: true }) public boolean: TemplateRef<any>;\n\n  /**\n   * Access to the date renderer fallback template. The template used internally looks like shown in the example\n   * That means, it renders data \"as is\", but can be modified by handling a custom pipe. To apply such\n   * a pipe, your viewmodel's properties must be decorated with the {@link FormatPipe} decorator.\n   *\n   * __Template code:__\n   * ~~~~~~~~\n   * <ng-template #date let-data let-modelpipe=\"pipe\" let-params=\"params\">\n   *  {{ data | formatData: modelpipe: params }}\n   * </ng-template>\n   * ~~~~~~~~\n   *\n   */\n  @ViewChild('date', { static: true }) public dateFallback: TemplateRef<any>;\n\n  /**\n   * You can provide a custom template to override the fallback and render a field's data completely on your own.\n   */\n  @ContentChild('date', { static: true }) public date: TemplateRef<any>;\n\n  /**\n   * Access to the enum renderer fallback template. The template used internally looks like shown in the example\n   *\n   * __Template code:__\n   * ~~~~~~~~\n   * <ng-template #enum let-data>\n   *  {{ data }}\n   * </ng-template>\n   * ~~~~~~~~\n   *\n   */\n  @ViewChild('enum', { static: true }) public enumFallback: TemplateRef<any>;\n\n  /**\n   * You can provide a custom template to override the fallback and render a field's data completely on your own.\n   */\n  @ContentChild('enum', { static: true }) public enum: TemplateRef<any>;\n\n  /**\n   * Access to the number renderer fallback template. The template used internally looks like shown in the example\n   * That means, it renders data \"as is\", but can be modified by handling a custom pipe. To apply such\n   * a pipe, your viewmodel's properties must be decorated with the {@link FormatPipe} decorator.\n   *\n   * __Template code:__\n   * ~~~~~~~~\n   * <ng-template #number let-data let-modelpipe=\"pipe\" let-params=\"params\">\n   *  {{ data | formatData: modelpipe: params }}\n   * </ng-template>\n   * ~~~~~~~~\n   *\n   */\n  @ViewChild('number', { static: true }) public numberFallback: TemplateRef<any>;\n\n  /**\n   * You can provide a custom template to override the fallback and render a field's data completely on your own.\n   */\n  @ContentChild('number', { static: true }) public number: TemplateRef<any>;\n\n  @Input() public externals: { [key: string]: any } = {};\n\n  // @ViewChild(TemplateRef) template: TemplateRef<any>;\n\n  /**\n   * Override the internal styles by giving directly CSS rules based on the column tags.\n   */\n  @Input()\n  public columnStyle: DatagridStyles;\n\n  /**\n   * The model that makes up the content. Shall provide properties with decorators to control appearance.\n   */\n  @Input()\n  public model: DataGridModel<any>;\n\n  /**\n   * Wheather to show a delete button. Clicking it fires the {@link DataGridModel.OnDelete}event.\n   */\n  @Input()\n  public showDeleteButton: boolean;\n  /**\n   * Wheather to show an edit button. Clicking it fires the {@link DataGridModel.OnEdit}event.\n   */\n  @Input()\n  public showEditButton: boolean;\n\n  /**\n   * Show the action column at all. Use {@link showDeleteButton and  @see showEditButton to switch the}buttons\n   * on or off individually. Default is `true` (actions visible).\n   */\n  @Input()\n  public showActions = true;\n\n  /**\n   * The text that appears on the Delete button. Default is 'Delete'.\n   */\n  @Input()\n  public textDeleteButton = 'Delete';\n  /**\n   * The text that appears on the Edit button. Default is 'Edit'.\n   */\n  @Input()\n  public textEditButton = 'Edit';\n  /**\n   * The column header of the column that shows the buttons. Default is 'Actions'.\n   */\n  @Input()\n  public textButtonsHeader = 'Actions';\n\n  /**\n   * The text that appears if there are no items to show. Can also be overwritten by a more complex piece\n   * of code by adding a template like this:\n   *\n   * @example\n   * <ng-template #data-warning-noitems>\n   *   <div class=\"alert alert-danger\">The grid is empty</div>\n   * </ng-template>\n   */\n  @Input()\n  public textNoItems = 'There are no items to show';\n\n  /**\n   * The filter value to filter the content. The data is of type `{ [prop: string]: any }`.\n   *\n   * @param value A dictionary with filter instructions as shown below. The filter logic applies one after another, like an __AND__ conjunction.\n   *\n   * @example\n   * {\n   *    \"email\": \"paul@sample.com\"\n   *    \"name\": \"Paul\"\n   * }\n   *\n   */\n  @Input()\n  public set filter(value: { [prop: string]: any }) {\n    if (this.model) {\n      this.model.searchValue = value;\n    }\n  }\n\n  /**\n   * If `true` the columns can be rearranged by moving around with drag 'n drop.\n   */\n  @Input()\n  public reArrangeColumns: boolean;\n\n  /**\n   * Event forwarded from model class and being fired after the model class's onEdit event.\n   * The event is invoked by the appropriate internal button via click.\n   */\n  @Output()\n  public editItem: EventEmitter<any> = new EventEmitter<any>();\n\n  /**\n   * Event forwarded from model class and being fired after the model class's onDelete event.\n   * The event is invoked by the appropriate internal button via click.\n   */\n  @Output()\n  public deleteItem: EventEmitter<any> = new EventEmitter<any>();\n\n  public ngAfterViewInit(): void {\n    if (this.model) {\n      this.model.onEdit.subscribe(item => this.editItem.emit(item));\n      this.model.onDelete.subscribe(item => this.deleteItem.emit(item));\n    }\n  }\n\n  public ngOnDestroy(): void {\n    if (this.model) {\n      this.model.onEdit.unsubscribe();\n      this.model.onDelete.unsubscribe();\n    }\n  }\n\n  // tslint:disable-next-line:member-ordering\n  /**\n   * @ignore\n   */\n  private warnProp: { [prop: string]: string } = {};\n\n  /**\n   * @ignore\n   * Controls the template used to display certain data types.\n   * If the host provides a template it's being used, otherwise a fallback is provided\n   * @param uiHint Property of {@link UiHint} decorator\n   */\n  public getActiveTemplate(uiHint: string, prop?: string): TemplateRef<any> {\n    if (this[uiHint]) {\n      // if provided by user via ContentChild and overwriting defaults (string == string etc.)\n      return this[uiHint];\n    }\n    if (this.externals[uiHint]) {\n      // if provided by user via ContentChild but completely replaced\n      return this.externals[uiHint];\n    }\n    if (this[`${uiHint}Fallback`]) {\n      // otherwise we take ours from ng-template via ViewChild\n      return this[`${uiHint}Fallback`];\n    }\n    // if we go here the model requested a custom template that didn't exists\n    if (this.warnProp[prop] !== uiHint) {\n      console.warn(`Property ${prop} requested the template ${uiHint}, but it wasn't provided. Falling back to \"string\".`);\n      this.warnProp[prop] = uiHint;\n    }\n    return this.stringFallback;\n  }\n}\n"]}