@scania/tegel
Version:
Tegel Design System
197 lines (192 loc) • 10.1 kB
JavaScript
'use strict';
var index = require('./index-DGsdvbvx.js');
const folderTabsCss = () => `:host{box-sizing:border-box;overflow:hidden;outline:0}:host *{box-sizing:border-box}:host .wrapper{display:flex;overflow-x:scroll;scrollbar-width:none;position:relative}:host .wrapper::-webkit-scrollbar{display:none}:host .scroll-right-button{z-index:1;right:0}:host .scroll-left-button{z-index:1;left:0}:host .scroll-right-button,:host .scroll-left-button{height:50px;color:var(--tds-folder-tabs-scroll-btn-color);cursor:pointer;border:0;width:0;background-color:var(--tds-folder-tabs-scroll-btn-background);display:none;justify-content:center;align-items:center;opacity:0;pointer-events:none;position:sticky}:host .scroll-right-button.show,:host .scroll-left-button.show{min-width:48px;display:block;opacity:1;pointer-events:all}:host .scroll-right-button:hover,:host .scroll-left-button:hover{background-color:var(--tds-folder-tabs-scroll-btn-background-hover)}:host .scroll-right-button:active,:host .scroll-left-button:active{background-color:var(--tds-folder-tabs-scroll-btn-background-active)}:host .scroll-right-button:focus-within::before,:host .scroll-left-button:focus-within::before{outline:2px solid var(--tds-focus-outline-color);box-shadow:0 0 0 1px var(--tds-white);outline-offset:1px;z-index:1;content:"";position:absolute;top:3px;bottom:3px;left:3px;right:3px}:host .scroll-right-button:focus,:host .scroll-left-button:focus{outline:0}:host .scroll-right-button svg,:host .scroll-left-button svg{fill:var(--tds-folder-tabs-scroll-btn-color)}`;
const TdsFolderTabs = class {
constructor(hostRef) {
index.registerInstance(this, hostRef);
this.tdsChange = index.createEvent(this, "tdsChange", 7);
/** Variant of the Tabs, primary= on white, secondary= on grey50 */
this.modeVariant = null;
/** Sets the default selected Tab. */
this.defaultSelectedIndex = 0;
/** Defines aria-label on left scroll button */
this.tdsScrollLeftAriaLabel = 'Scroll left';
/** Defines aria-label on right scroll button */
this.tdsScrollRightAriaLabel = 'Scroll right';
this.buttonWidth = 0;
this.showLeftScroll = false;
this.showRightScroll = false;
this.navWrapperElement = null; // reference to container with nav buttons
this.componentWidth = 0; // visible width of this component
this.buttonsWidth = 0; // total width of all nav items combined
this.scrollableWidth = 0; // total amount that is possible to scroll in the nav wrapper
this.tabElements = [];
this.clickHandlers = new WeakMap();
this.addResizeObserver = () => {
const resizeObserver = new ResizeObserver((entries) => {
entries.forEach((entry) => {
const componentWidth = entry.contentRect.width;
let buttonsWidth = 0;
const navButtons = Array.from(this.host.children);
navButtons.forEach((navButton) => {
const style = window.getComputedStyle(navButton);
buttonsWidth +=
navButton.clientWidth + parseFloat(style.marginLeft) + parseFloat(style.marginRight);
});
this.componentWidth = componentWidth;
this.buttonsWidth = buttonsWidth;
this.scrollableWidth = buttonsWidth - componentWidth;
this.updateScrollButtons();
});
});
if (this.navWrapperElement)
resizeObserver.observe(this.navWrapperElement);
};
this.addEventListenerToTabs = () => {
this.tabElements = Array.from(this.host.children);
this.tabElements.map((item, index) => {
const clickHandler = () => {
if (!item.disabled) {
const tdsChangeEvent = this.tdsChange.emit({
selectedTabIndex: this.tabElements.indexOf(item),
});
if (!tdsChangeEvent.defaultPrevented) {
this.tabElements.forEach((element) => element.setSelected(false));
item.setSelected(true);
this.selectedIndex = index;
}
}
};
item.addEventListener('click', clickHandler);
this.clickHandlers.set(item, clickHandler); // Store the handler in WeakMap
return item;
});
};
this.removeEventListenerFromTabs = () => {
this.tabElements.forEach((item) => {
const clickHandler = this.clickHandlers.get(item);
if (clickHandler) {
item.removeEventListener('click', clickHandler);
this.clickHandlers.delete(item);
}
});
};
}
/** Sets the passed tabindex as the selected Tab. */
async selectTab(tabIndex) {
if (tabIndex < 0 || tabIndex >= this.tabElements.length) {
throw new Error('Tab index out of bounds');
}
if (!this.tabElements[tabIndex].disabled) {
this.tabElements.forEach((element) => element.setSelected(false));
this.tabElements = this.tabElements.map((element, index) => {
if (index === tabIndex) {
element.setSelected(true);
this.selectedIndex = tabIndex;
}
return element;
});
}
return { selectedTabIndex: this.selectedIndex };
}
/** Reinitializes the component. */
async reinitialize() {
this.handleSlotChange();
}
handleSelectedIndexUpdate() {
const tabs = Array.from(this.host.children);
this.tabElements = tabs.map((tabElement) => {
tabElement.setSelected(false);
return tabElement;
});
if (this.selectedIndex !== undefined) {
this.tabElements[this.selectedIndex].setSelected(true);
}
}
scrollRight() {
if (!this.navWrapperElement)
return;
const scroll = this.navWrapperElement.scrollLeft;
this.navWrapperElement.scrollLeft = scroll + this.buttonsWidth;
this.evaluateScrollButtons();
}
scrollLeft() {
if (!this.navWrapperElement)
return;
const scroll = this.navWrapperElement.scrollLeft;
this.navWrapperElement.scrollLeft = scroll - this.buttonsWidth;
this.evaluateScrollButtons();
}
evaluateScrollButtons() {
if (!this.navWrapperElement)
return;
const scroll = this.navWrapperElement.scrollLeft;
this.showRightScroll = scroll <= this.scrollableWidth;
this.showLeftScroll = scroll > 0;
}
initializeTabs() {
this.tabElements = Array.from(this.host.children);
// remove first and last class from other tabs in case of initialization
this.tabElements.forEach((child) => {
child.classList.remove('last');
child.classList.remove('first');
});
this.tabElements[0].classList.add('first');
this.tabElements[this.tabElements.length - 1].classList.add('last');
}
initializeSelectedTab() {
if (this.selectedIndex === undefined) {
this.addEventListenerToTabs();
this.tabElements[this.defaultSelectedIndex].setSelected(true);
this.selectedIndex = this.defaultSelectedIndex;
}
else {
this.tabElements[this.selectedIndex].setSelected(true);
}
this.tdsChange.emit({
selectedTabIndex: this.selectedIndex,
});
}
updateScrollButtons() {
if (this.buttonsWidth > this.componentWidth) {
this.evaluateScrollButtons();
}
else {
this.showLeftScroll = false;
this.showRightScroll = false;
}
}
handleSlotChange() {
this.initializeTabs();
this.addEventListenerToTabs();
this.initializeSelectedTab();
this.updateScrollButtons();
this.addResizeObserver();
}
connectedCallback() {
this.initializeTabs();
}
componentDidLoad() {
this.initializeSelectedTab();
}
componentDidRender() {
this.updateScrollButtons();
this.addResizeObserver();
}
disconnectedCallback() {
this.removeEventListenerFromTabs();
}
render() {
return (index.h(index.Host, { key: 'e8b3a0c15cad9dc5cf7b68381de79786c5853c17', role: "tablist", class: `${this.modeVariant ? `tds-mode-variant-${this.modeVariant}` : ''}` }, index.h("div", { key: '459d2af9aa923196938b7c7848ef3494b1eb0015', class: "wrapper", ref: (el) => {
this.navWrapperElement = el;
} }, index.h("button", { key: '6c124a6cc60705c0eabe05f05e24308300c5c230', "aria-label": this.tdsScrollLeftAriaLabel, class: `scroll-left-button ${this.showLeftScroll ? 'show' : ''}`, disabled: !this.showLeftScroll, onClick: () => this.scrollLeft() }, index.h("tds-icon", { key: '82585953fd9a38d4b4fa9c0ddf514b7ddf0f5938', name: "chevron_left", size: "20px" })), index.h("slot", { key: '101d7936691d26bc4448d9c8800e28500c42c92e', onSlotchange: () => this.handleSlotChange() }), index.h("button", { key: 'a95a09608cf9388d0e55465a62ba6d3c5101d337', "aria-label": this.tdsScrollRightAriaLabel, class: `scroll-right-button ${this.showRightScroll ? 'show' : ''}`, disabled: !this.showRightScroll, onClick: () => this.scrollRight() }, index.h("tds-icon", { key: 'c36777a240da371d5f2145410f6b5635bb688d95', name: "chevron_right", size: "20px" })))));
}
get host() { return index.getElement(this); }
static get watchers() { return {
"selectedIndex": [{
"handleSelectedIndexUpdate": 0
}]
}; }
};
TdsFolderTabs.style = folderTabsCss();
exports.tds_folder_tabs = TdsFolderTabs;