carbon-components-angular
Version:
Next generation components
300 lines • 26.4 kB
JavaScript
import { Component, Input, Output, EventEmitter } from "@angular/core";
import { merge } from "carbon-components-angular/utils";
import { range } from "carbon-components-angular/common";
import * as i0 from "@angular/core";
import * as i1 from "carbon-components-angular/i18n";
import * as i2 from "carbon-components-angular/experimental";
import * as i3 from "@angular/common";
import * as i4 from "carbon-components-angular/icon";
import * as i5 from "carbon-components-angular/forms";
import * as i6 from "./pagination-item.component";
import * as i7 from "./pagination-overflow.component";
/**
* Use pagination when you have multiple pages of data to handle. Get started with importing the module:
*
* ```typescript
* import { PaginationModule } from 'carbon-components-angular';
* ```
*
* ```html
* <cds-pagination-nav [model]="model" (selectPage)="selectPage($event)"></cds-pagination-nav>
* ```
*
* In your `selectPage()` method set the `model.currentPage` to selected page, _after_
* you load the page.
*
* ```typescript
* selectPage(page) {
* // ... your code to load the page goes here
*
* this.model.currentPage = page;
*
* // ... anything you want to do after page selection changes goes here
* }
* ```
*
* [See demo](../../?path=/story/components-pagination-nav--basic)
*/
export class PaginationNav {
constructor(i18n, experimental) {
this.i18n = i18n;
this.experimental = experimental;
/**
* Set to `true` to disable the backward/forward buttons.
*/
this.disabled = false;
/**
* Number of items to show in pagination. Minimum is 4.
*/
this.numOfItemsToShow = 4;
/**
* Emits the new page number.
*
* You should tie into this and update `model.currentPage` once the fresh
* data is finally loaded.
*/
this.selectPage = new EventEmitter();
this.nextItemText = this.i18n.getOverridable("PAGINATION.NEXT");
this.previousItemText = this.i18n.getOverridable("PAGINATION.PREVIOUS");
PaginationNav.paginationCounter++;
}
/**
* Expects an object that contains some or all of:
* ```
* {
* "NEXT": "Next",
* "PREVIOUS": "Previous",
* }
* ```
*/
set translations(value) {
const valueWithDefaults = merge(this.i18n.getMultiple("PAGINATION"), value);
this.nextItemText.override(valueWithDefaults.NEXT);
this.previousItemText.override(valueWithDefaults.PREVIOUS);
}
get totalNumbersArray() {
return range(this.totalDataLength + 1, 1);
}
get currentPage() {
return this.model.currentPage;
}
set currentPage(value) {
value = Number(value);
// emits the value to allow the user to update current page
// in the model once the page is loaded
this.selectPage.emit(value);
}
get totalDataLength() {
return this.model.totalDataLength;
}
get startOffset() {
return this.numOfItemsToShow <= 4 && this.currentPage > 1 ? 0 : 1;
}
get frontCuts() {
const cuts = this.getCuts();
return cuts.front;
}
get backCuts() {
const cuts = this.getCuts();
return cuts.back;
}
get leftArrowDisabled() {
return this.disabled || this.currentPage === 1;
}
get rightArrowDisabled() {
return this.disabled || this.currentPage === this.totalDataLength;
}
handleOverflowSelection(page) {
if (typeof page === "number") {
this.currentPage = page;
}
}
jumpToNext() {
this.currentPage = this.currentPage < this.totalDataLength ? this.currentPage + 1 : this.totalDataLength;
}
jumpToPrevious() {
this.currentPage = this.currentPage > 1 ? this.currentPage - 1 : 1;
}
getPages() {
if (this.totalDataLength <= 1) {
return null;
}
const cuts = this.getCuts();
return this.totalNumbersArray.slice(this.startOffset + cuts.front, (1 + cuts.back) * -1);
}
getCuts(splitPoint = null) {
const page = this.currentPage - 1;
const totalItems = this.totalDataLength;
const itemsThatFit = this.numOfItemsToShow;
if (itemsThatFit >= totalItems) {
return {
front: 0,
back: 0
};
}
const split = splitPoint || Math.ceil(itemsThatFit / 2) - 1;
let frontHidden = page + 1 - split;
let backHidden = totalItems - page - (itemsThatFit - split) + 1;
if (frontHidden <= 1) {
backHidden -= frontHidden <= 0 ? Math.abs(frontHidden) + 1 : 0;
frontHidden = 0;
}
if (backHidden <= 1) {
frontHidden -= backHidden <= 0 ? Math.abs(backHidden) + 1 : 0;
backHidden = 0;
}
return {
front: frontHidden,
back: backHidden
};
}
}
PaginationNav.paginationCounter = 0;
PaginationNav.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: PaginationNav, deps: [{ token: i1.I18n }, { token: i2.ExperimentalService }], target: i0.ɵɵFactoryTarget.Component });
PaginationNav.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "14.3.0", type: PaginationNav, selector: "cds-pagination-nav, ibm-pagination-navm", inputs: { model: "model", disabled: "disabled", numOfItemsToShow: "numOfItemsToShow", translations: "translations" }, outputs: { selectPage: "selectPage" }, ngImport: i0, template: `
<div>
<div class="cds--pagination-nav">
<ul class="cds--pagination-nav__list">
<li class="cds--pagination-nav__list-item">
<cds-icon-button
kind="ghost"
size="md"
(click)="jumpToPrevious()"
[disabled]="leftArrowDisabled"
[description]="previousItemText.subject | async">
<svg
cdsIcon="caret--left"
size="16"
class="cds--btn__icon">
</svg>
</cds-icon-button>
</li>
<cds-pagination-nav-item
*ngIf="this.numOfItemsToShow >= 5 || (this.numOfItemsToShow <= 4 && currentPage <= 1)"
page="1"
(click)="currentPage = 1"
[isActive]="currentPage == 1">
</cds-pagination-nav-item>
<cds-pagination-overflow
*ngIf="frontCuts"
[count]="frontCuts"
[fromIndex]="startOffset"
(change)="handleOverflowSelection($event)">
</cds-pagination-overflow>
<cds-pagination-nav-item
*ngFor="let page of getPages();"
[page]="page"
(click)="currentPage = page"
[isActive]="currentPage == page">
</cds-pagination-nav-item>
<cds-pagination-overflow
*ngIf="backCuts"
[count]="backCuts"
[fromIndex]="totalNumbersArray.length - backCuts - 1"
(change)="handleOverflowSelection($event)">
</cds-pagination-overflow>
<cds-pagination-nav-item
*ngIf="totalDataLength > 1"
[page]="totalNumbersArray.length"
(click)="currentPage = totalNumbersArray.length"
[isActive]="currentPage == totalNumbersArray.length">
</cds-pagination-nav-item>
<li class="cds--pagination-nav__list-item">
<cds-icon-button
kind="ghost"
(click)="jumpToNext()"
[disabled]="rightArrowDisabled"
[description]="nextItemText.subject | async">
<svg
cdsIcon="caret--right"
size="16"
class="cds--btn__icon">
</svg>
</cds-icon-button>
</li>
</ul>
</div>
</div>
`, isInline: true, dependencies: [{ kind: "directive", type: i3.NgForOf, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }, { kind: "directive", type: i3.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { kind: "directive", type: i4.IconDirective, selector: "[cdsIcon], [ibmIcon]", inputs: ["ibmIcon", "cdsIcon", "size", "title", "ariaLabel", "ariaLabelledBy", "ariaHidden", "isFocusable"] }, { kind: "component", type: i5.IconButton, selector: "cds-icon-button, ibm-icon-button", inputs: ["buttonNgClass", "buttonAttributes", "buttonId", "kind", "size", "type", "isExpressive", "disabled", "description"], outputs: ["click", "focus", "blur", "tooltipClick"] }, { kind: "component", type: i6.PaginationNavItem, selector: "cds-pagination-nav-item, ibm-pagination-nav-item", inputs: ["page", "isActive"], outputs: ["click"] }, { kind: "component", type: i7.PaginationOverflow, selector: "cds-pagination-overflow, ibm-pagination-overflow", inputs: ["fromIndex", "count", "ariaLabel"], outputs: ["change"] }, { kind: "pipe", type: i3.AsyncPipe, name: "async" }] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: PaginationNav, decorators: [{
type: Component,
args: [{
selector: "cds-pagination-nav, ibm-pagination-navm",
template: `
<div>
<div class="cds--pagination-nav">
<ul class="cds--pagination-nav__list">
<li class="cds--pagination-nav__list-item">
<cds-icon-button
kind="ghost"
size="md"
(click)="jumpToPrevious()"
[disabled]="leftArrowDisabled"
[description]="previousItemText.subject | async">
<svg
cdsIcon="caret--left"
size="16"
class="cds--btn__icon">
</svg>
</cds-icon-button>
</li>
<cds-pagination-nav-item
*ngIf="this.numOfItemsToShow >= 5 || (this.numOfItemsToShow <= 4 && currentPage <= 1)"
page="1"
(click)="currentPage = 1"
[isActive]="currentPage == 1">
</cds-pagination-nav-item>
<cds-pagination-overflow
*ngIf="frontCuts"
[count]="frontCuts"
[fromIndex]="startOffset"
(change)="handleOverflowSelection($event)">
</cds-pagination-overflow>
<cds-pagination-nav-item
*ngFor="let page of getPages();"
[page]="page"
(click)="currentPage = page"
[isActive]="currentPage == page">
</cds-pagination-nav-item>
<cds-pagination-overflow
*ngIf="backCuts"
[count]="backCuts"
[fromIndex]="totalNumbersArray.length - backCuts - 1"
(change)="handleOverflowSelection($event)">
</cds-pagination-overflow>
<cds-pagination-nav-item
*ngIf="totalDataLength > 1"
[page]="totalNumbersArray.length"
(click)="currentPage = totalNumbersArray.length"
[isActive]="currentPage == totalNumbersArray.length">
</cds-pagination-nav-item>
<li class="cds--pagination-nav__list-item">
<cds-icon-button
kind="ghost"
(click)="jumpToNext()"
[disabled]="rightArrowDisabled"
[description]="nextItemText.subject | async">
<svg
cdsIcon="caret--right"
size="16"
class="cds--btn__icon">
</svg>
</cds-icon-button>
</li>
</ul>
</div>
</div>
`
}]
}], ctorParameters: function () { return [{ type: i1.I18n }, { type: i2.ExperimentalService }]; }, propDecorators: { model: [{
type: Input
}], disabled: [{
type: Input
}], numOfItemsToShow: [{
type: Input
}], translations: [{
type: Input
}], selectPage: [{
type: Output
}] } });
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Get started with importing the module:\n *\n * ```typescript\n * import { PaginationModule } from 'carbon-components-angular';\n * ```\n *\n * ```html\n * <cds-pagination-nav [model]=\"model\" (selectPage)=\"selectPage($event)\"></cds-pagination-nav>\n * ```\n *\n * In your `selectPage()` method set the `model.currentPage` to selected page, _after_\n * you load the page.\n *\n * ```typescript\n * selectPage(page) {\n * \t// ... your code to load the page goes here\n *\n * \tthis.model.currentPage = page;\n *\n * \t// ... anything you want to do after page selection changes goes here\n * }\n * ```\n *\n * [See demo](../../?path=/story/components-pagination-nav--basic)\n */\n@Component({\n\tselector: \"cds-pagination-nav, ibm-pagination-navm\",\n\ttemplate: `\n\t<div>\n\t\t<div class=\"cds--pagination-nav\">\n\t\t\t<ul class=\"cds--pagination-nav__list\">\n\t\t\t\t<li class=\"cds--pagination-nav__list-item\">\n\t\t\t\t\t<cds-icon-button\n\t\t\t\t\t\tkind=\"ghost\"\n\t\t\t\t\t\tsize=\"md\"\n\t\t\t\t\t\t(click)=\"jumpToPrevious()\"\n\t\t\t\t\t\t[disabled]=\"leftArrowDisabled\"\n\t\t\t\t\t\t[description]=\"previousItemText.subject | async\">\n\t\t\t\t\t\t<svg\n\t\t\t\t\t\t\tcdsIcon=\"caret--left\"\n\t\t\t\t\t\t\tsize=\"16\"\n\t\t\t\t\t\t\tclass=\"cds--btn__icon\">\n\t\t\t\t\t\t</svg>\n\t\t\t\t\t</cds-icon-button>\n\t\t\t\t</li>\n\t\t\t\t<cds-pagination-nav-item\n\t\t\t\t\t*ngIf=\"this.numOfItemsToShow >= 5 || (this.numOfItemsToShow <= 4 && currentPage <= 1)\"\n\t\t\t\t\tpage=\"1\"\n\t\t\t\t\t(click)=\"currentPage = 1\"\n\t\t\t\t\t[isActive]=\"currentPage == 1\">\n\t\t\t\t</cds-pagination-nav-item>\n\t\t\t\t<cds-pagination-overflow\n\t\t\t\t\t*ngIf=\"frontCuts\"\n\t\t\t\t\t[count]=\"frontCuts\"\n\t\t\t\t\t[fromIndex]=\"startOffset\"\n\t\t\t\t\t(change)=\"handleOverflowSelection($event)\">\n\t\t\t\t</cds-pagination-overflow>\n\t\t\t\t<cds-pagination-nav-item\n\t\t\t\t\t*ngFor=\"let page of getPages();\"\n\t\t\t\t\t[page]=\"page\"\n\t\t\t\t\t(click)=\"currentPage = page\"\n\t\t\t\t\t[isActive]=\"currentPage == page\">\n\t\t\t\t</cds-pagination-nav-item>\n\t\t\t\t<cds-pagination-overflow\n\t\t\t\t\t*ngIf=\"backCuts\"\n\t\t\t\t\t[count]=\"backCuts\"\n\t\t\t\t\t[fromIndex]=\"totalNumbersArray.length - backCuts - 1\"\n\t\t\t\t\t(change)=\"handleOverflowSelection($event)\">\n\t\t\t\t</cds-pagination-overflow>\n\t\t\t\t<cds-pagination-nav-item\n\t\t\t\t\t*ngIf=\"totalDataLength > 1\"\n\t\t\t\t\t[page]=\"totalNumbersArray.length\"\n\t\t\t\t\t(click)=\"currentPage = totalNumbersArray.length\"\n\t\t\t\t\t[isActive]=\"currentPage == totalNumbersArray.length\">\n\t\t\t\t</cds-pagination-nav-item>\n\t\t\t\t<li class=\"cds--pagination-nav__list-item\">\n\t\t\t\t\t<cds-icon-button\n\t\t\t\t\t\tkind=\"ghost\"\n\t\t\t\t\t\t(click)=\"jumpToNext()\"\n\t\t\t\t\t\t[disabled]=\"rightArrowDisabled\"\n\t\t\t\t\t\t[description]=\"nextItemText.subject | async\">\n\t\t\t\t\t\t<svg\n\t\t\t\t\t\t\tcdsIcon=\"caret--right\"\n\t\t\t\t\t\t\tsize=\"16\"\n\t\t\t\t\t\t\tclass=\"cds--btn__icon\">\n\t\t\t\t\t\t</svg>\n\t\t\t\t\t</cds-icon-button>\n\t\t\t\t</li>\n\t\t\t</ul>\n\t\t</div>\n\t</div>\n\t`\n})\nexport class PaginationNav {\n\tstatic paginationCounter = 0;\n\t/**\n\t * `PaginationNavModel` with the information about pages you're controlling.\n\t */\n\t@Input() model: PaginationModel;\n\t/**\n\t   * Set to `true` to disable the backward/forward buttons.\n\t */\n\t@Input() disabled = false;\n\t/**\n\t * Number of items to show in pagination. Minimum is 4.\n\t */\n\t@Input() numOfItemsToShow = 4;\n\n\t/**\n\t * Expects an object that contains some or all of:\n\t * ```\n\t * {\n\t *\t\t\"NEXT\": \"Next\",\n\t *\t\t\"PREVIOUS\": \"Previous\",\n\t * }\n\t * ```\n\t */\n\t@Input()\n\tset translations(value: PaginationNavTranslations) {\n\t\tconst valueWithDefaults = merge(this.i18n.getMultiple(\"PAGINATION\"), value);\n\t\tthis.nextItemText.override(valueWithDefaults.NEXT);\n\t\tthis.previousItemText.override(valueWithDefaults.PREVIOUS);\n\t}\n\n\t/**\n\t * Emits the new page number.\n\t *\n\t * You should tie into this and update `model.currentPage` once the fresh\n\t * data is finally loaded.\n\t */\n\t@Output() selectPage = new EventEmitter<number>();\n\n\tget totalNumbersArray() {\n\t\treturn range(this.totalDataLength + 1, 1);\n\t}\n\n\tget currentPage() {\n\t\treturn this.model.currentPage;\n\t}\n\n\tset currentPage(value) {\n\t\tvalue = Number(value);\n\t\t// emits the value to allow the user to update current page\n\t\t// in the model once the page is loaded\n\t\tthis.selectPage.emit(value);\n\t}\n\n\tget totalDataLength() {\n\t\treturn this.model.totalDataLength;\n\t}\n\n\tget startOffset() {\n\t\treturn this.numOfItemsToShow <= 4 && this.currentPage > 1 ? 0 : 1;\n\t}\n\n\tget frontCuts() {\n\t\tconst cuts = this.getCuts();\n\t\treturn cuts.front;\n\t}\n\n\tget backCuts() {\n\t\tconst cuts = this.getCuts();\n\t\treturn cuts.back;\n\t}\n\n\tget leftArrowDisabled() {\n\t\treturn this.disabled || this.currentPage === 1;\n\t}\n\n\tget rightArrowDisabled() {\n\t\treturn this.disabled || this.currentPage === this.totalDataLength;\n\t}\n\n\tnextItemText = this.i18n.getOverridable(\"PAGINATION.NEXT\");\n\tpreviousItemText = this.i18n.getOverridable(\"PAGINATION.PREVIOUS\");\n\n\tconstructor(protected i18n: I18n, protected experimental: ExperimentalService) {\n\t\tPaginationNav.paginationCounter++;\n\t}\n\n\thandleOverflowSelection(page) {\n\t\tif (typeof page === \"number\") {\n\t\t\tthis.currentPage = page;\n\t\t}\n\t}\n\n\tpublic jumpToNext() {\n\t\tthis.currentPage = this.currentPage < this.totalDataLength ? this.currentPage + 1 : this.totalDataLength;\n\t}\n\n\tpublic jumpToPrevious() {\n\t\tthis.currentPage = this.currentPage > 1 ? this.currentPage - 1 : 1;\n\t}\n\n\tpublic getPages() {\n\t\tif (this.totalDataLength <= 1) {\n\t\t\treturn null;\n\t\t}\n\t\tconst cuts = this.getCuts();\n\t\treturn this.totalNumbersArray.slice(this.startOffset + cuts.front, (1 + cuts.back) * -1);\n\t}\n\n\tprivate getCuts(splitPoint = null) {\n\t\tconst page = this.currentPage - 1;\n\t\tconst totalItems = this.totalDataLength;\n\t\tconst itemsThatFit = this.numOfItemsToShow;\n\n\t\tif (itemsThatFit >= totalItems) {\n\t\t\treturn {\n\t\t\t\tfront: 0,\n\t\t\t\tback: 0\n\t\t\t};\n\t\t}\n\t\tconst split = splitPoint || Math.ceil(itemsThatFit / 2) - 1;\n\t\tlet frontHidden = page + 1 - split;\n\t\tlet backHidden = totalItems - page - (itemsThatFit - split) + 1;\n\n\t\tif (frontHidden <= 1) {\n\t\t\tbackHidden -= frontHidden <= 0 ? Math.abs(frontHidden) + 1 : 0;\n\t\t\tfrontHidden = 0;\n\t\t}\n\t\tif (backHidden <= 1) {\n\t\t\tfrontHidden -= backHidden <= 0 ? Math.abs(backHidden) + 1 : 0;\n\t\t\tbackHidden = 0;\n\t\t}\n\t\treturn {\n\t\t\tfront: frontHidden,\n\t\t\tback: backHidden\n\t\t};\n\t}\n}\n"]}