@neocomplexx/ngx-neo-completer
Version:
This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 7.0.5.
177 lines • 22.2 kB
JavaScript
import { __decorate, __metadata, __param } from "tslib";
import { Directive, ElementRef, Host, HostListener } from '@angular/core';
import { CtrCompleter } from './ctr-completer';
import { isNil } from '../globals';
export class CtrRowItem {
constructor(row, index) {
this.row = row;
this.index = index;
}
}
let CtrDropdown =
// tslint:disable-next-line:directive-class-suffix
class CtrDropdown {
constructor(completer, el) {
this.completer = completer;
this.el = el;
this.rows = [];
this._rowMouseDown = false;
this.completer.registerDropdown(this);
}
ngOnDestroy() {
this.completer.registerDropdown(null);
}
ngAfterViewInit() {
const css = getComputedStyle(this.el.nativeElement);
const autoHighlightIndex = this.completer.autoHighlightIndex;
this.isScrollOn = !!css.maxHeight && css.overflowY === 'auto';
if (autoHighlightIndex) {
setTimeout(() => {
this.highlightRow(autoHighlightIndex);
}, 0);
}
}
onMouseDown(event) {
// Support for canceling blur on IE (issue #158)
if (!this._rowMouseDown) {
this.completer.cancelBlur(true);
setTimeout(() => {
this.completer.cancelBlur(false);
}, 0);
}
else {
this._rowMouseDown = false;
}
}
registerRow(row) {
const arrIndex = this.rows.findIndex(_row => _row.index === row.index);
if (arrIndex >= 0) {
this.rows[arrIndex] = row;
}
else {
this.rows.push(row);
}
}
unregisterRow(rowIndex) {
const arrIndex = this.rows.findIndex(_row => _row.index === rowIndex);
this.rows.splice(arrIndex, 1);
if (this.currHighlighted && rowIndex === this.currHighlighted.index) {
this.highlightRow(null);
}
}
highlightRow(index) {
const highlighted = this.rows.find(row => row.index === index);
// tslint:disable-next-line:no-non-null-assertion
if (isNil(index) || index < 0) {
if (this.currHighlighted) {
this.currHighlighted.row.setHighlighted(false);
}
this.currHighlighted = undefined;
this.completer.onHighlighted(null);
return;
}
if (!highlighted) {
return;
}
if (this.currHighlighted) {
this.currHighlighted.row.setHighlighted(false);
}
this.currHighlighted = highlighted;
this.currHighlighted.row.setHighlighted(true);
this.completer.onHighlighted(this.currHighlighted.row.getDataItem());
if (this.isScrollOn && this.currHighlighted) {
const rowTop = this.dropdownRowTop();
if (!rowTop) {
return;
}
if (rowTop < 0) {
this.dropdownScrollTopTo(rowTop - 1);
}
else {
const row = this.currHighlighted.row.getNativeElement();
if (this.dropdownHeight() < row.getBoundingClientRect().bottom) {
this.dropdownScrollTopTo(this.dropdownRowOffsetHeight(row));
if (this.el.nativeElement.getBoundingClientRect().bottom - this.dropdownRowOffsetHeight(row) <
row.getBoundingClientRect().top) {
this.dropdownScrollTopTo(row.getBoundingClientRect().top -
(this.el.nativeElement.getBoundingClientRect().top +
parseInt(getComputedStyle(this.el.nativeElement).paddingTop, 10)));
}
}
}
}
}
clear() {
this.rows = [];
}
onSelected(item) {
this.completer.onSelected(item);
}
rowMouseDown() {
this._rowMouseDown = true;
}
selectCurrent() {
if (this.currHighlighted) {
this.onSelected(this.currHighlighted.row.getDataItem());
}
else if (this.rows.length > 0) {
this.onSelected(this.rows[0].row.getDataItem());
}
}
nextRow() {
let nextRowIndex = 0;
if (this.currHighlighted) {
nextRowIndex = this.currHighlighted.index + 1;
}
this.highlightRow(nextRowIndex);
}
prevRow() {
let nextRowIndex = -1;
if (this.currHighlighted) {
nextRowIndex = this.currHighlighted.index - 1;
}
this.highlightRow(nextRowIndex);
}
dropdownScrollTopTo(offset) {
this.el.nativeElement.scrollTop = this.el.nativeElement.scrollTop + offset;
}
dropdownRowTop() {
if (!this.currHighlighted) {
return;
}
return this.currHighlighted.row.getNativeElement().getBoundingClientRect().top -
(this.el.nativeElement.getBoundingClientRect().top +
parseInt(getComputedStyle(this.el.nativeElement).paddingTop, 10));
}
dropdownHeight() {
return this.el.nativeElement.getBoundingClientRect().top +
parseInt(getComputedStyle(this.el.nativeElement).maxHeight, 10);
}
dropdownRowOffsetHeight(row) {
const css = getComputedStyle(row.parentElement);
return row.parentElement.offsetHeight +
parseInt(css.marginTop, 10) + parseInt(css.marginBottom, 10);
}
};
CtrDropdown.ctorParameters = () => [
{ type: CtrCompleter, decorators: [{ type: Host }] },
{ type: ElementRef }
];
__decorate([
HostListener('mousedown', ['$event']),
__metadata("design:type", Function),
__metadata("design:paramtypes", [Object]),
__metadata("design:returntype", void 0)
], CtrDropdown.prototype, "onMouseDown", null);
CtrDropdown = __decorate([
Directive({
// tslint:disable-next-line:directive-selector
selector: '[ctrDropdown]',
})
// tslint:disable-next-line:directive-class-suffix
,
__param(0, Host()),
__metadata("design:paramtypes", [CtrCompleter, ElementRef])
], CtrDropdown);
export { CtrDropdown };
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{ Directive, ElementRef, Host, HostListener } from '@angular/core';\nimport type { AfterViewInit, OnDestroy } from '@angular/core';\n\nimport { CompleterItem } from '../components/completer-item';\nimport { CtrCompleter } from './ctr-completer';\nimport type { CompleterDropdown } from './ctr-completer';\nimport { isNil } from '../globals';\n\n\nexport interface CtrRowElement {\n    setHighlighted(selected: boolean): void;\n    getNativeElement(): any;\n    getDataItem(): CompleterItem;\n}\n\nexport class CtrRowItem {\n    constructor(public row: CtrRowElement, public index: number) { }\n}\n\n@Directive({\n    // tslint:disable-next-line:directive-selector\n    selector: '[ctrDropdown]',\n})\n// tslint:disable-next-line:directive-class-suffix\nexport class CtrDropdown implements CompleterDropdown, OnDestroy, AfterViewInit {\n\n    private rows: CtrRowItem[] = [];\n    private currHighlighted: CtrRowItem | undefined;\n    private isScrollOn: boolean;\n    private _rowMouseDown = false;\n\n    constructor(@Host() private completer: CtrCompleter, private el: ElementRef) {\n        this.completer.registerDropdown(this);\n    }\n\n    public ngOnDestroy() {\n        this.completer.registerDropdown(null);\n    }\n\n    public ngAfterViewInit() {\n        const css = getComputedStyle(this.el.nativeElement);\n        const autoHighlightIndex = this.completer.autoHighlightIndex;\n\n        this.isScrollOn = !!css.maxHeight && css.overflowY === 'auto';\n        if (autoHighlightIndex) {\n            setTimeout(\n                () => {\n                    this.highlightRow(autoHighlightIndex);\n                },\n                0\n            );\n        }\n    }\n\n    @HostListener('mousedown', ['$event']) public onMouseDown(event: any) {\n        // Support for canceling blur on IE (issue #158)\n        if (!this._rowMouseDown) {\n            this.completer.cancelBlur(true);\n            setTimeout(\n                () => {\n                    this.completer.cancelBlur(false);\n                },\n                0\n            );\n        } else {\n            this._rowMouseDown = false;\n        }\n    }\n\n    public registerRow(row: CtrRowItem) {\n        const arrIndex = this.rows.findIndex(_row => _row.index === row.index);\n        if (arrIndex >= 0) {\n            this.rows[arrIndex] = row;\n        } else {\n            this.rows.push(row);\n        }\n    }\n\n    public unregisterRow(rowIndex: number) {\n        const arrIndex = this.rows.findIndex(_row => _row.index === rowIndex);\n        this.rows.splice(arrIndex, 1);\n        if (this.currHighlighted && rowIndex === this.currHighlighted.index) {\n            this.highlightRow(null);\n        }\n    }\n\n    public highlightRow(index: number | null) {\n        const highlighted = this.rows.find(row => row.index === index);\n\n        // tslint:disable-next-line:no-non-null-assertion\n        if (isNil(index) || index! < 0) {\n            if (this.currHighlighted) {\n                this.currHighlighted.row.setHighlighted(false);\n            }\n            this.currHighlighted = undefined;\n            this.completer.onHighlighted(null);\n            return;\n        }\n\n        if (!highlighted) {\n            return;\n        }\n\n        if (this.currHighlighted) {\n            this.currHighlighted.row.setHighlighted(false);\n        }\n\n        this.currHighlighted = highlighted;\n        this.currHighlighted.row.setHighlighted(true);\n        this.completer.onHighlighted(this.currHighlighted.row.getDataItem());\n\n        if (this.isScrollOn && this.currHighlighted) {\n            const rowTop = this.dropdownRowTop();\n\n            if (!rowTop) {\n                return;\n            }\n\n            if (rowTop < 0) {\n                this.dropdownScrollTopTo(rowTop - 1);\n            } else {\n                const row = this.currHighlighted.row.getNativeElement();\n                if (this.dropdownHeight() < row.getBoundingClientRect().bottom) {\n                    this.dropdownScrollTopTo(this.dropdownRowOffsetHeight(row));\n                    if (this.el.nativeElement.getBoundingClientRect().bottom - this.dropdownRowOffsetHeight(row) <\n                        row.getBoundingClientRect().top) {\n                        this.dropdownScrollTopTo(row.getBoundingClientRect().top -\n                            (this.el.nativeElement.getBoundingClientRect().top +\n                                parseInt(getComputedStyle(this.el.nativeElement).paddingTop as string, 10)));\n                    }\n                }\n            }\n        }\n    }\n\n    public clear() {\n        this.rows = [];\n    }\n\n    public onSelected(item: CompleterItem) {\n        this.completer.onSelected(item);\n    }\n\n    public rowMouseDown() {\n        this._rowMouseDown = true;\n    }\n\n    public selectCurrent() {\n        if (this.currHighlighted) {\n            this.onSelected(this.currHighlighted.row.getDataItem());\n        } else if (this.rows.length > 0) {\n            this.onSelected(this.rows[0].row.getDataItem());\n        }\n\n    }\n\n    public nextRow() {\n        let nextRowIndex = 0;\n\n        if (this.currHighlighted) {\n            nextRowIndex = this.currHighlighted.index + 1;\n        }\n\n        this.highlightRow(nextRowIndex);\n    }\n\n    public prevRow() {\n        let nextRowIndex = -1;\n\n        if (this.currHighlighted) {\n            nextRowIndex = this.currHighlighted.index - 1;\n        }\n\n        this.highlightRow(nextRowIndex);\n    }\n\n    private dropdownScrollTopTo(offset: any) {\n        this.el.nativeElement.scrollTop = this.el.nativeElement.scrollTop + offset;\n    }\n\n    private dropdownRowTop() {\n        if (!this.currHighlighted) {\n            return;\n        }\n\n        return this.currHighlighted.row.getNativeElement().getBoundingClientRect().top -\n            (this.el.nativeElement.getBoundingClientRect().top +\n                parseInt(getComputedStyle(this.el.nativeElement).paddingTop as string, 10));\n    }\n\n    private dropdownHeight() {\n        return this.el.nativeElement.getBoundingClientRect().top +\n            parseInt(getComputedStyle(this.el.nativeElement).maxHeight as string, 10);\n    }\n\n    private dropdownRowOffsetHeight(row: any) {\n        const css = getComputedStyle(row.parentElement);\n        return row.parentElement.offsetHeight +\n            parseInt(css.marginTop as string, 10) + parseInt(css.marginBottom as string, 10);\n    }\n}\n"]}