@ng-select/ng-select
Version:
Angular ng-select - All in One UI Select, Multiselect and Autocomplete
661 lines • 55.6 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { newId } from './id';
import * as searchHelper from './search-helper';
import { isDefined, isFunction, isObject } from './value-utils';
export class ItemsList {
/**
* @param {?} _ngSelect
* @param {?} _selectionModel
*/
constructor(_ngSelect, _selectionModel) {
this._ngSelect = _ngSelect;
this._selectionModel = _selectionModel;
this._items = [];
this._filteredItems = [];
this._markedIndex = -1;
}
/**
* @return {?}
*/
get items() {
return this._items;
}
/**
* @return {?}
*/
get filteredItems() {
return this._filteredItems;
}
/**
* @return {?}
*/
get markedIndex() {
return this._markedIndex;
}
/**
* @return {?}
*/
get selectedItems() {
return this._selectionModel.value;
}
/**
* @return {?}
*/
get markedItem() {
return this._filteredItems[this._markedIndex];
}
/**
* @return {?}
*/
get noItemsToSelect() {
return this._ngSelect.hideSelected && this._items.length === this.selectedItems.length;
}
/**
* @return {?}
*/
get maxItemsSelected() {
return this._ngSelect.multiple && this._ngSelect.maxSelectedItems <= this.selectedItems.length;
}
/**
* @return {?}
*/
get lastSelectedItem() {
/** @type {?} */
let i = this.selectedItems.length - 1;
for (; i >= 0; i--) {
/** @type {?} */
let item = this.selectedItems[i];
if (!item.disabled) {
return item;
}
}
return null;
}
/**
* @param {?} items
* @return {?}
*/
setItems(items) {
this._items = items.map((/**
* @param {?} item
* @param {?} index
* @return {?}
*/
(item, index) => this.mapItem(item, index)));
if (this._ngSelect.groupBy) {
this._groups = this._groupBy(this._items, this._ngSelect.groupBy);
this._items = this._flatten(this._groups);
}
else {
this._groups = new Map();
this._groups.set(undefined, this._items);
}
this._filteredItems = [...this._items];
}
/**
* @param {?} item
* @return {?}
*/
select(item) {
if (item.selected || this.maxItemsSelected) {
return;
}
/** @type {?} */
const multiple = this._ngSelect.multiple;
if (!multiple) {
this.clearSelected();
}
this._selectionModel.select(item, multiple, this._ngSelect.selectableGroupAsModel);
if (this._ngSelect.hideSelected) {
this._hideSelected(item);
}
}
/**
* @param {?} item
* @return {?}
*/
unselect(item) {
if (!item.selected) {
return;
}
this._selectionModel.unselect(item, this._ngSelect.multiple);
if (this._ngSelect.hideSelected && isDefined(item.index) && this._ngSelect.multiple) {
this._showSelected(item);
}
}
/**
* @param {?} value
* @return {?}
*/
findItem(value) {
/** @type {?} */
let findBy;
if (this._ngSelect.compareWith) {
findBy = (/**
* @param {?} item
* @return {?}
*/
item => this._ngSelect.compareWith(item.value, value));
}
else if (this._ngSelect.bindValue) {
findBy = (/**
* @param {?} item
* @return {?}
*/
item => !item.children && this.resolveNested(item.value, this._ngSelect.bindValue) === value);
}
else {
findBy = (/**
* @param {?} item
* @return {?}
*/
item => item.value === value ||
!item.children && item.label && item.label === this.resolveNested(value, this._ngSelect.bindLabel));
}
return this._items.find((/**
* @param {?} item
* @return {?}
*/
item => findBy(item)));
}
/**
* @param {?} item
* @return {?}
*/
addItem(item) {
/** @type {?} */
const option = this.mapItem(item, this._items.length);
this._items.push(option);
this._filteredItems.push(option);
return option;
}
/**
* @param {?=} keepDisabled
* @return {?}
*/
clearSelected(keepDisabled = false) {
this._selectionModel.clear(keepDisabled);
this._items.forEach((/**
* @param {?} item
* @return {?}
*/
item => {
item.selected = keepDisabled && item.selected && item.disabled;
item.marked = false;
}));
if (this._ngSelect.hideSelected) {
this.resetFilteredItems();
}
}
/**
* @param {?} term
* @return {?}
*/
findByLabel(term) {
term = searchHelper.stripSpecialChars(term).toLocaleLowerCase();
return this.filteredItems.find((/**
* @param {?} item
* @return {?}
*/
item => {
/** @type {?} */
const label = searchHelper.stripSpecialChars(item.label).toLocaleLowerCase();
return label.substr(0, term.length) === term;
}));
}
/**
* @param {?} term
* @return {?}
*/
filter(term) {
if (!term) {
this.resetFilteredItems();
return;
}
this._filteredItems = [];
term = this._ngSelect.searchFn ? term : searchHelper.stripSpecialChars(term).toLocaleLowerCase();
/** @type {?} */
const match = this._ngSelect.searchFn || this._defaultSearchFn;
/** @type {?} */
const hideSelected = this._ngSelect.hideSelected;
for (const key of Array.from(this._groups.keys())) {
/** @type {?} */
const matchedItems = [];
for (const item of this._groups.get(key)) {
if (hideSelected && (item.parent && item.parent.selected || item.selected)) {
continue;
}
/** @type {?} */
const searchItem = this._ngSelect.searchFn ? item.value : item;
if (match(term, searchItem)) {
matchedItems.push(item);
}
}
if (matchedItems.length > 0) {
const [last] = matchedItems.slice(-1);
if (last.parent) {
/** @type {?} */
const head = this._items.find((/**
* @param {?} x
* @return {?}
*/
x => x === last.parent));
this._filteredItems.push(head);
}
this._filteredItems.push(...matchedItems);
}
}
}
/**
* @return {?}
*/
resetFilteredItems() {
if (this._filteredItems.length === this._items.length) {
return;
}
if (this._ngSelect.hideSelected && this.selectedItems.length > 0) {
this._filteredItems = this._items.filter((/**
* @param {?} x
* @return {?}
*/
x => !x.selected));
}
else {
this._filteredItems = this._items;
}
}
/**
* @return {?}
*/
unmarkItem() {
this._markedIndex = -1;
}
/**
* @return {?}
*/
markNextItem() {
this._stepToItem(+1);
}
/**
* @return {?}
*/
markPreviousItem() {
this._stepToItem(-1);
}
/**
* @param {?} item
* @return {?}
*/
markItem(item) {
this._markedIndex = this._filteredItems.indexOf(item);
}
/**
* @param {?=} markDefault
* @return {?}
*/
markSelectedOrDefault(markDefault) {
if (this._filteredItems.length === 0) {
return;
}
/** @type {?} */
const lastMarkedIndex = this._getLastMarkedIndex();
if (lastMarkedIndex > -1) {
this._markedIndex = lastMarkedIndex;
}
else {
this._markedIndex = markDefault ? this.filteredItems.findIndex((/**
* @param {?} x
* @return {?}
*/
x => !x.disabled)) : -1;
}
}
/**
* @param {?} option
* @param {?} key
* @return {?}
*/
resolveNested(option, key) {
if (!isObject(option)) {
return option;
}
if (key.indexOf('.') === -1) {
return option[key];
}
else {
/** @type {?} */
let keys = key.split('.');
/** @type {?} */
let value = option;
for (let i = 0, len = keys.length; i < len; ++i) {
if (value == null) {
return null;
}
value = value[keys[i]];
}
return value;
}
}
/**
* @param {?} item
* @param {?} index
* @return {?}
*/
mapItem(item, index) {
/** @type {?} */
const label = isDefined(item.$ngOptionLabel) ? item.$ngOptionLabel : this.resolveNested(item, this._ngSelect.bindLabel);
/** @type {?} */
const value = isDefined(item.$ngOptionValue) ? item.$ngOptionValue : item;
return {
index: index,
label: isDefined(label) ? label.toString() : '',
value: value,
disabled: item.disabled,
htmlId: `${this._ngSelect.dropdownId}-${index}`,
};
}
/**
* @return {?}
*/
mapSelectedItems() {
/** @type {?} */
const multiple = this._ngSelect.multiple;
for (const selected of this.selectedItems) {
/** @type {?} */
const value = this._ngSelect.bindValue ? this.resolveNested(selected.value, this._ngSelect.bindValue) : selected.value;
/** @type {?} */
const item = isDefined(value) ? this.findItem(value) : null;
this._selectionModel.unselect(selected, multiple);
this._selectionModel.select(item || selected, multiple, this._ngSelect.selectableGroupAsModel);
}
if (this._ngSelect.hideSelected) {
this._filteredItems = this.filteredItems.filter((/**
* @param {?} x
* @return {?}
*/
x => this.selectedItems.indexOf(x) === -1));
}
}
/**
* @private
* @param {?} item
* @return {?}
*/
_showSelected(item) {
this._filteredItems.push(item);
if (item.parent) {
/** @type {?} */
const parent = item.parent;
/** @type {?} */
const parentExists = this._filteredItems.find((/**
* @param {?} x
* @return {?}
*/
x => x === parent));
if (!parentExists) {
this._filteredItems.push(parent);
}
}
else if (item.children) {
for (const child of item.children) {
child.selected = false;
this._filteredItems.push(child);
}
}
this._filteredItems = [...this._filteredItems.sort((/**
* @param {?} a
* @param {?} b
* @return {?}
*/
(a, b) => (a.index - b.index)))];
}
/**
* @private
* @param {?} item
* @return {?}
*/
_hideSelected(item) {
this._filteredItems = this._filteredItems.filter((/**
* @param {?} x
* @return {?}
*/
x => x !== item));
if (item.parent) {
/** @type {?} */
const children = item.parent.children;
if (children.every((/**
* @param {?} x
* @return {?}
*/
x => x.selected))) {
this._filteredItems = this._filteredItems.filter((/**
* @param {?} x
* @return {?}
*/
x => x !== item.parent));
}
}
else if (item.children) {
this._filteredItems = this.filteredItems.filter((/**
* @param {?} x
* @return {?}
*/
x => x.parent !== item));
}
}
/**
* @private
* @param {?} search
* @param {?} opt
* @return {?}
*/
_defaultSearchFn(search, opt) {
/** @type {?} */
const label = searchHelper.stripSpecialChars(opt.label).toLocaleLowerCase();
return label.indexOf(search) > -1;
}
/**
* @private
* @param {?} steps
* @return {?}
*/
_getNextItemIndex(steps) {
if (steps > 0) {
return (this._markedIndex === this._filteredItems.length - 1) ? 0 : (this._markedIndex + 1);
}
return (this._markedIndex <= 0) ? (this._filteredItems.length - 1) : (this._markedIndex - 1);
}
/**
* @private
* @param {?} steps
* @return {?}
*/
_stepToItem(steps) {
if (this._filteredItems.length === 0 || this._filteredItems.every((/**
* @param {?} x
* @return {?}
*/
x => x.disabled))) {
return;
}
this._markedIndex = this._getNextItemIndex(steps);
if (this.markedItem.disabled) {
this._stepToItem(steps);
}
}
/**
* @private
* @return {?}
*/
_getLastMarkedIndex() {
if (this._ngSelect.hideSelected) {
return -1;
}
if (this._markedIndex > -1 && this.markedItem === undefined) {
return -1;
}
/** @type {?} */
const selectedIndex = this._filteredItems.indexOf(this.lastSelectedItem);
if (this.lastSelectedItem && selectedIndex < 0) {
return -1;
}
return Math.max(this.markedIndex, selectedIndex);
}
/**
* @private
* @param {?} items
* @param {?} prop
* @return {?}
*/
_groupBy(items, prop) {
/** @type {?} */
const groups = new Map();
if (items.length === 0) {
return groups;
}
// Check if items are already grouped by given key.
if (Array.isArray(items[0].value[(/** @type {?} */ (prop))])) {
for (const item of items) {
/** @type {?} */
const children = (item.value[(/** @type {?} */ (prop))] || []).map((/**
* @param {?} x
* @param {?} index
* @return {?}
*/
(x, index) => this.mapItem(x, index)));
groups.set(item, children);
}
return groups;
}
/** @type {?} */
const isFnKey = isFunction(this._ngSelect.groupBy);
/** @type {?} */
const keyFn = (/**
* @param {?} item
* @return {?}
*/
(item) => {
/** @type {?} */
let key = isFnKey ? ((/** @type {?} */ (prop)))(item.value) : item.value[(/** @type {?} */ (prop))];
return isDefined(key) ? key : undefined;
});
// Group items by key.
for (const item of items) {
/** @type {?} */
let key = keyFn(item);
/** @type {?} */
const group = groups.get(key);
if (group) {
group.push(item);
}
else {
groups.set(key, [item]);
}
}
return groups;
}
/**
* @private
* @param {?} groups
* @return {?}
*/
_flatten(groups) {
/** @type {?} */
const isGroupByFn = isFunction(this._ngSelect.groupBy);
/** @type {?} */
const items = [];
for (const key of Array.from(groups.keys())) {
/** @type {?} */
let i = items.length;
if (key === undefined) {
/** @type {?} */
const withoutGroup = groups.get(undefined) || [];
items.push(...withoutGroup.map((/**
* @param {?} x
* @return {?}
*/
x => (Object.assign({}, x, { index: i++ })))));
continue;
}
/** @type {?} */
const isObjectKey = isObject(key);
/** @type {?} */
const parent = {
label: isObjectKey ? '' : String(key),
children: undefined,
parent: null,
index: i++,
disabled: !this._ngSelect.selectableGroup,
htmlId: newId(),
};
/** @type {?} */
const groupKey = isGroupByFn ? this._ngSelect.bindLabel : (/** @type {?} */ (this._ngSelect.groupBy));
/** @type {?} */
const groupValue = this._ngSelect.groupValue || ((/**
* @return {?}
*/
() => {
if (isObjectKey) {
return ((/** @type {?} */ (key))).value;
}
return { [groupKey]: key };
}));
/** @type {?} */
const children = groups.get(key).map((/**
* @param {?} x
* @return {?}
*/
x => {
x.parent = parent;
x.children = undefined;
x.index = i++;
return x;
}));
parent.children = children;
parent.value = groupValue(key, children.map((/**
* @param {?} x
* @return {?}
*/
x => x.value)));
items.push(parent);
items.push(...children);
}
return items;
}
}
if (false) {
/**
* @type {?}
* @private
*/
ItemsList.prototype._groups;
/**
* @type {?}
* @private
*/
ItemsList.prototype._items;
/**
* @type {?}
* @private
*/
ItemsList.prototype._filteredItems;
/**
* @type {?}
* @private
*/
ItemsList.prototype._markedIndex;
/**
* @type {?}
* @private
*/
ItemsList.prototype._ngSelect;
/**
* @type {?}
* @private
*/
ItemsList.prototype._selectionModel;
}
//# 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markedItem(): NgOption {\n        return this._filteredItems[this._markedIndex];\n    }\n\n    get noItemsToSelect(): boolean {\n        return this._ngSelect.hideSelected && this._items.length === this.selectedItems.length;\n    }\n\n    get maxItemsSelected(): boolean {\n        return this._ngSelect.multiple && this._ngSelect.maxSelectedItems <= this.selectedItems.length;\n    }\n\n    get lastSelectedItem() {\n        let i = this.selectedItems.length - 1;\n        for (; i >= 0; i--) {\n            let item = this.selectedItems[i];\n            if (!item.disabled) {\n                return item;\n            }\n        }\n        return null;\n    }\n\n    setItems(items: any[]) {\n        this._items = items.map((item, index) => this.mapItem(item, index));\n        if (this._ngSelect.groupBy) {\n            this._groups = this._groupBy(this._items, this._ngSelect.groupBy);\n            this._items = this._flatten(this._groups);\n        } else {\n            this._groups = new Map();\n            this._groups.set(undefined, this._items)\n        }\n        this._filteredItems = [...this._items];\n    }\n\n    select(item: NgOption) {\n        if (item.selected || this.maxItemsSelected) {\n            return;\n        }\n        const multiple = this._ngSelect.multiple;\n        if (!multiple) {\n            this.clearSelected();\n        }\n\n        this._selectionModel.select(item, multiple, this._ngSelect.selectableGroupAsModel);\n        if (this._ngSelect.hideSelected) {\n            this._hideSelected(item);\n        }\n    }\n\n    unselect(item: NgOption) {\n        if (!item.selected) {\n            return;\n        }\n        this._selectionModel.unselect(item, this._ngSelect.multiple);\n        if (this._ngSelect.hideSelected && isDefined(item.index) && this._ngSelect.multiple) {\n            this._showSelected(item);\n        }\n    }\n\n    findItem(value: any): NgOption {\n        let findBy: (item: NgOption) => boolean;\n        if (this._ngSelect.compareWith) {\n            findBy = item => this._ngSelect.compareWith(item.value, value)\n        } else if (this._ngSelect.bindValue) {\n            findBy = item => !item.children && this.resolveNested(item.value, this._ngSelect.bindValue) === value\n        } else {\n            findBy = item => item.value === value ||\n                !item.children && item.label && item.label === this.resolveNested(value, this._ngSelect.bindLabel)\n        }\n        return this._items.find(item => findBy(item));\n    }\n\n    addItem(item: any) {\n        const option = this.mapItem(item, this._items.length);\n        this._items.push(option);\n        this._filteredItems.push(option);\n        return option;\n    }\n\n    clearSelected(keepDisabled = false) {\n        this._selectionModel.clear(keepDisabled);\n        this._items.forEach(item => {\n            item.selected = keepDisabled && item.selected && item.disabled;\n            item.marked = false;\n        });\n        if (this._ngSelect.hideSelected) {\n            this.resetFilteredItems();\n        }\n    }\n\n    findByLabel(term: string) {\n        term = searchHelper.stripSpecialChars(term).toLocaleLowerCase();\n        return this.filteredItems.find(item => {\n            const label = searchHelper.stripSpecialChars(item.label).toLocaleLowerCase();\n            return label.substr(0, term.length) === term;\n        });\n    }\n\n    filter(term: string): void {\n        if (!term) {\n            this.resetFilteredItems();\n            return;\n        }\n\n        this._filteredItems = [];\n        term = this._ngSelect.searchFn ? term : searchHelper.stripSpecialChars(term).toLocaleLowerCase();\n        const match = this._ngSelect.searchFn || this._defaultSearchFn;\n        const hideSelected = this._ngSelect.hideSelected;\n\n        for (const key of Array.from(this._groups.keys())) {\n            const matchedItems = [];\n            for (const item of this._groups.get(key)) {\n                if (hideSelected && (item.parent && item.parent.selected || item.selected)) {\n                    continue;\n                }\n                const searchItem = this._ngSelect.searchFn ? item.value : item;\n                if (match(term, searchItem)) {\n                    matchedItems.push(item);\n                }\n            }\n            if (matchedItems.length > 0) {\n                const [last] = matchedItems.slice(-1);\n                if (last.parent) {\n                    const head = this._items.find(x => x === last.parent);\n                    this._filteredItems.push(head);\n                }\n                this._filteredItems.push(...matchedItems);\n            }\n        }\n    }\n\n    resetFilteredItems() {\n        if (this._filteredItems.length === this._items.length) {\n            return;\n        }\n\n        if (this._ngSelect.hideSelected && this.selectedItems.length > 0) {\n            this._filteredItems = this._items.filter(x => !x.selected);\n        } else {\n            this._filteredItems = this._items;\n        }\n    }\n\n    unmarkItem() {\n        this._markedIndex = -1;\n    }\n\n    markNextItem() {\n        this._stepToItem(+1);\n    }\n\n    markPreviousItem() {\n        this._stepToItem(-1);\n    }\n\n    markItem(item: NgOption) {\n        this._markedIndex = this._filteredItems.indexOf(item);\n    }\n\n    markSelectedOrDefault(markDefault?: boolean) {\n        if (this._filteredItems.length === 0) {\n            return;\n        }\n\n        const lastMarkedIndex = this._getLastMarkedIndex();\n        if (lastMarkedIndex > -1) {\n            this._markedIndex = lastMarkedIndex;\n        } else {\n            this._markedIndex = markDefault ? this.filteredItems.findIndex(x => !x.disabled) : -1;\n        }\n    }\n\n    resolveNested(option: any, key: string): any {\n        if (!isObject(option)) {\n            return option;\n        }\n        if (key.indexOf('.') === -1) {\n            return option[key];\n        } else {\n            let keys: string[] = key.split('.');\n            let value = option;\n            for (let i = 0, len = keys.length; i < len; ++i) {\n                if (value == null) {\n                    return null;\n                }\n                value = value[keys[i]];\n            }\n            return value;\n        }\n    }\n\n    mapItem(item: any, index: number): NgOption {\n        const label = isDefined(item.$ngOptionLabel) ? item.$ngOptionLabel : this.resolveNested(item, this._ngSelect.bindLabel);\n        const value = isDefined(item.$ngOptionValue) ? item.$ngOptionValue : item;\n        return {\n            index: index,\n            label: isDefined(label) ? label.toString() : '',\n            value: value,\n            disabled: item.disabled,\n            htmlId: `${this._ngSelect.dropdownId}-${index}`,\n        };\n    }\n\n    mapSelectedItems() {\n        const multiple = this._ngSelect.multiple;\n        for (const selected of this.selectedItems) {\n            const value = this._ngSelect.bindValue ? this.resolveNested(selected.value, this._ngSelect.bindValue) : selected.value;\n            const item = isDefined(value) ? this.findItem(value) : null;\n            this._selectionModel.unselect(selected, multiple);\n            this._selectionModel.select(item || selected, multiple, this._ngSelect.selectableGroupAsModel);\n        }\n\n        if (this._ngSelect.hideSelected) {\n            this._filteredItems = this.filteredItems.filter(x => this.selectedItems.indexOf(x) === -1);\n        }\n    }\n\n    private _showSelected(item: NgOption) {\n        this._filteredItems.push(item);\n        if (item.parent) {\n            const parent = item.parent;\n            const parentExists = this._filteredItems.find(x => x === parent);\n            if (!parentExists) {\n                this._filteredItems.push(parent);\n            }\n        } else if (item.children) {\n            for (const child of item.children) {\n                child.selected = false;\n                this._filteredItems.push(child);\n            }\n        }\n        this._filteredItems = [...this._filteredItems.sort((a, b) => (a.index - b.index))];\n    }\n\n    private _hideSelected(item: NgOption) {\n        this._filteredItems = this._filteredItems.filter(x => x !== item);\n        if (item.parent) {\n            const children = item.parent.children;\n            if (children.every(x => x.selected)) {\n                this._filteredItems = this._filteredItems.filter(x => x !== item.parent);\n            }\n        } else if (item.children) {\n            this._filteredItems =