@ng-bootstrap/ng-bootstrap
Version:
Angular powered Bootstrap
97 lines • 11.7 kB
JavaScript
import { Component, EventEmitter, Input, Output, ViewEncapsulation } from '@angular/core';
import { toString } from '../util/util';
export class NgbTypeaheadWindow {
constructor() {
this.activeIdx = 0;
/**
* Flag indicating if the first row should be active initially
*/
this.focusFirst = true;
/**
* A function used to format a given result before display. This function should return a formatted string without any
* HTML markup
*/
this.formatter = toString;
/**
* Event raised when user selects a particular result row
*/
this.selectEvent = new EventEmitter();
this.activeChangeEvent = new EventEmitter();
}
hasActive() { return this.activeIdx > -1 && this.activeIdx < this.results.length; }
getActive() { return this.results[this.activeIdx]; }
markActive(activeIdx) {
this.activeIdx = activeIdx;
this._activeChanged();
}
next() {
if (this.activeIdx === this.results.length - 1) {
this.activeIdx = this.focusFirst ? (this.activeIdx + 1) % this.results.length : -1;
}
else {
this.activeIdx++;
}
this._activeChanged();
}
prev() {
if (this.activeIdx < 0) {
this.activeIdx = this.results.length - 1;
}
else if (this.activeIdx === 0) {
this.activeIdx = this.focusFirst ? this.results.length - 1 : -1;
}
else {
this.activeIdx--;
}
this._activeChanged();
}
resetActive() {
this.activeIdx = this.focusFirst ? 0 : -1;
this._activeChanged();
}
select(item) { this.selectEvent.emit(item); }
ngOnInit() { this.resetActive(); }
_activeChanged() {
this.activeChangeEvent.emit(this.activeIdx >= 0 ? this.id + '-' + this.activeIdx : undefined);
}
}
NgbTypeaheadWindow.decorators = [
{ type: Component, args: [{
selector: 'ngb-typeahead-window',
exportAs: 'ngbTypeaheadWindow',
encapsulation: ViewEncapsulation.None,
host: {
'(mousedown)': '$event.preventDefault()',
'[class]': '"dropdown-menu show" + (popupClass ? " " + popupClass : "")',
'role': 'listbox',
'[id]': 'id'
},
template: `
<ng-template #rt let-result="result" let-term="term" let-formatter="formatter">
<ngb-highlight [result]="formatter(result)" [term]="term"></ngb-highlight>
</ng-template>
<ng-template ngFor [ngForOf]="results" let-result let-idx="index">
<button type="button" class="dropdown-item" role="option"
[id]="id + '-' + idx"
[class.active]="idx === activeIdx"
(mouseenter)="markActive(idx)"
(click)="select(result)">
<ng-template [ngTemplateOutlet]="resultTemplate || rt"
[ngTemplateOutletContext]="{result: result, term: term, formatter: formatter}"></ng-template>
</button>
</ng-template>
`
},] }
];
NgbTypeaheadWindow.propDecorators = {
id: [{ type: Input }],
focusFirst: [{ type: Input }],
results: [{ type: Input }],
term: [{ type: Input }],
formatter: [{ type: Input }],
resultTemplate: [{ type: Input }],
popupClass: [{ type: Input }],
selectEvent: [{ type: Output, args: ['select',] }],
activeChangeEvent: [{ type: Output, args: ['activeChange',] }]
};
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The id should be unique and the same\n   *  as the associated typeahead's id.\n   */\n  @Input() id: string;\n\n  /**\n   * Flag indicating if the first row should be active initially\n   */\n  @Input() focusFirst = true;\n\n  /**\n   * Typeahead match results to be displayed\n   */\n  @Input() results;\n\n  /**\n   * Search term used to get current results\n   */\n  @Input() term: string;\n\n  /**\n   * A function used to format a given result before display. This function should return a formatted string without any\n   * HTML markup\n   */\n  @Input() formatter = toString;\n\n  /**\n   * A template to override a matching result default display\n   */\n  @Input() resultTemplate: TemplateRef<ResultTemplateContext>;\n\n  /**\n  * A custom class to append to the typeahead window\n   *\n   * @since 9.1.0\n  */\n  @Input() popupClass: string;\n\n  /**\n   * Event raised when user selects a particular result row\n   */\n  @Output('select') selectEvent = new EventEmitter();\n\n  @Output('activeChange') activeChangeEvent = new EventEmitter();\n\n  hasActive() { return this.activeIdx > -1 && this.activeIdx < this.results.length; }\n\n  getActive() { return this.results[this.activeIdx]; }\n\n  markActive(activeIdx: number) {\n    this.activeIdx = activeIdx;\n    this._activeChanged();\n  }\n\n  next() {\n    if (this.activeIdx === this.results.length - 1) {\n      this.activeIdx = this.focusFirst ? (this.activeIdx + 1) % this.results.length : -1;\n    } else {\n      this.activeIdx++;\n    }\n    this._activeChanged();\n  }\n\n  prev() {\n    if (this.activeIdx < 0) {\n      this.activeIdx = this.results.length - 1;\n    } else if (this.activeIdx === 0) {\n      this.activeIdx = this.focusFirst ? this.results.length - 1 : -1;\n    } else {\n      this.activeIdx--;\n    }\n    this._activeChanged();\n  }\n\n  resetActive() {\n    this.activeIdx = this.focusFirst ? 0 : -1;\n    this._activeChanged();\n  }\n\n  select(item) { this.selectEvent.emit(item); }\n\n  ngOnInit() { this.resetActive(); }\n\n  private _activeChanged() {\n    this.activeChangeEvent.emit(this.activeIdx >= 0 ? this.id + '-' + this.activeIdx : undefined);\n  }\n}\n"]}