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var _watch;
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
import { COMPONENT_UID_KEY, Vue } from '../../vue';
import { NAME_TABS, NAME_TAB_BUTTON_HELPER } from '../../constants/components';
import { IS_BROWSER } from '../../constants/env';
import { EVENT_NAME_ACTIVATE_TAB, EVENT_NAME_CHANGED, EVENT_NAME_CLICK, EVENT_NAME_FIRST, EVENT_NAME_LAST, EVENT_NAME_NEXT, EVENT_NAME_PREV } from '../../constants/events';
import { CODE_DOWN, CODE_END, CODE_HOME, CODE_LEFT, CODE_RIGHT, CODE_SPACE, CODE_UP } from '../../constants/key-codes';
import { PROP_TYPE_ARRAY_OBJECT_STRING, PROP_TYPE_BOOLEAN, PROP_TYPE_NUMBER, PROP_TYPE_STRING } from '../../constants/props';
import { SLOT_NAME_EMPTY, SLOT_NAME_TABS_END, SLOT_NAME_TABS_START, SLOT_NAME_TITLE } from '../../constants/slots';
import { arrayIncludes } from '../../utils/array';
import { BvEvent } from '../../utils/bv-event.class';
import { attemptFocus, selectAll, requestAF } from '../../utils/dom';
import { stopEvent } from '../../utils/events';
import { identity } from '../../utils/identity';
import { isEvent } from '../../utils/inspect';
import { looseEqual } from '../../utils/loose-equal';
import { mathMax } from '../../utils/math';
import { makeModelMixin } from '../../utils/model';
import { toInteger } from '../../utils/number';
import { omit, sortKeys } from '../../utils/object';
import { observeDom } from '../../utils/observe-dom';
import { makeProp, makePropsConfigurable } from '../../utils/props';
import { stableSort } from '../../utils/stable-sort';
import { idMixin, props as idProps } from '../../mixins/id';
import { normalizeSlotMixin } from '../../mixins/normalize-slot';
import { BLink } from '../link/link';
import { BNav, props as BNavProps } from '../nav/nav'; // --- Constants ---
var _makeModelMixin = makeModelMixin('value', {
type: PROP_TYPE_NUMBER
}),
modelMixin = _makeModelMixin.mixin,
modelProps = _makeModelMixin.props,
MODEL_PROP_NAME = _makeModelMixin.prop,
MODEL_EVENT_NAME = _makeModelMixin.event; // --- Helper methods ---
// Filter function to filter out disabled tabs
var notDisabled = function notDisabled(tab) {
return !tab.disabled;
}; // --- Helper components ---
// @vue/component
var BVTabButton = /*#__PURE__*/Vue.extend({
name: NAME_TAB_BUTTON_HELPER,
inject: {
bvTabs: {
default:
/* istanbul ignore next */
function _default() {
return {};
}
}
},
props: {
controls: makeProp(PROP_TYPE_STRING),
id: makeProp(PROP_TYPE_STRING),
noKeyNav: makeProp(PROP_TYPE_BOOLEAN, false),
posInSet: makeProp(PROP_TYPE_NUMBER),
setSize: makeProp(PROP_TYPE_NUMBER),
// Reference to the child <b-tab> instance
tab: makeProp(),
tabIndex: makeProp(PROP_TYPE_NUMBER)
},
methods: {
focus: function focus() {
attemptFocus(this.$refs.link);
},
handleEvent: function handleEvent(event) {
/* istanbul ignore next */
if (this.tab.disabled) {
return;
}
var type = event.type,
keyCode = event.keyCode,
shiftKey = event.shiftKey;
if (type === 'click') {
stopEvent(event);
this.$emit(EVENT_NAME_CLICK, event);
} else if (type === 'keydown' && keyCode === CODE_SPACE) {
// For ARIA tabs the SPACE key will also trigger a click/select
// Even with keyboard navigation disabled, SPACE should "click" the button
// See: https://github.com/bootstrap-vue/bootstrap-vue/issues/4323
stopEvent(event);
this.$emit(EVENT_NAME_CLICK, event);
} else if (type === 'keydown' && !this.noKeyNav) {
// For keyboard navigation
if ([CODE_UP, CODE_LEFT, CODE_HOME].indexOf(keyCode) !== -1) {
stopEvent(event);
if (shiftKey || keyCode === CODE_HOME) {
this.$emit(EVENT_NAME_FIRST, event);
} else {
this.$emit(EVENT_NAME_PREV, event);
}
} else if ([CODE_DOWN, CODE_RIGHT, CODE_END].indexOf(keyCode) !== -1) {
stopEvent(event);
if (shiftKey || keyCode === CODE_END) {
this.$emit(EVENT_NAME_LAST, event);
} else {
this.$emit(EVENT_NAME_NEXT, event);
}
}
}
}
},
render: function render(h) {
var id = this.id,
tabIndex = this.tabIndex,
setSize = this.setSize,
posInSet = this.posInSet,
controls = this.controls,
handleEvent = this.handleEvent;
var _this$tab = this.tab,
title = _this$tab.title,
localActive = _this$tab.localActive,
disabled = _this$tab.disabled,
titleItemClass = _this$tab.titleItemClass,
titleLinkClass = _this$tab.titleLinkClass,
titleLinkAttributes = _this$tab.titleLinkAttributes;
var $link = h(BLink, {
staticClass: 'nav-link',
class: [{
active: localActive && !disabled,
disabled: disabled
}, titleLinkClass, // Apply <b-tabs> `activeNavItemClass` styles when the tab is active
localActive ? this.bvTabs.activeNavItemClass : null],
props: {
disabled: disabled
},
attrs: _objectSpread(_objectSpread({}, titleLinkAttributes), {}, {
id: id,
role: 'tab',
// Roving tab index when keynav enabled
tabindex: tabIndex,
'aria-selected': localActive && !disabled ? 'true' : 'false',
'aria-setsize': setSize,
'aria-posinset': posInSet,
'aria-controls': controls
}),
on: {
click: handleEvent,
keydown: handleEvent
},
ref: 'link'
}, [this.tab.normalizeSlot(SLOT_NAME_TITLE) || title]);
return h('li', {
staticClass: 'nav-item',
class: [titleItemClass],
attrs: {
role: 'presentation'
}
}, [$link]);
}
}); // --- Props ---
var navProps = omit(BNavProps, ['tabs', 'isNavBar', 'cardHeader']);
export var props = makePropsConfigurable(sortKeys(_objectSpread(_objectSpread(_objectSpread(_objectSpread({}, idProps), modelProps), navProps), {}, {
// Only applied to the currently active `<b-nav-item>`
activeNavItemClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
// Only applied to the currently active `<b-tab>`
// This prop is sniffed by the `<b-tab>` child
activeTabClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
card: makeProp(PROP_TYPE_BOOLEAN, false),
contentClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
// Synonym for 'bottom'
end: makeProp(PROP_TYPE_BOOLEAN, false),
// This prop is sniffed by the `<b-tab>` child
lazy: makeProp(PROP_TYPE_BOOLEAN, false),
navClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
navWrapperClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
noFade: makeProp(PROP_TYPE_BOOLEAN, false),
noKeyNav: makeProp(PROP_TYPE_BOOLEAN, false),
noNavStyle: makeProp(PROP_TYPE_BOOLEAN, false),
tag: makeProp(PROP_TYPE_STRING, 'div')
})), NAME_TABS); // --- Main component ---
// @vue/component
export var BTabs = /*#__PURE__*/Vue.extend({
name: NAME_TABS,
mixins: [idMixin, modelMixin, normalizeSlotMixin],
provide: function provide() {
return {
bvTabs: this
};
},
props: props,
data: function data() {
return {
// Index of current tab
currentTab: toInteger(this[MODEL_PROP_NAME], -1),
// Array of direct child `<b-tab>` instances, in DOM order
tabs: [],
// Array of child instances registered (for triggering reactive updates)
registeredTabs: []
};
},
computed: {
fade: function fade() {
// This computed prop is sniffed by the tab child
return !this.noFade;
},
localNavClass: function localNavClass() {
var classes = [];
if (this.card && this.vertical) {
classes.push('card-header', 'h-100', 'border-bottom-0', 'rounded-0');
}
return [].concat(classes, [this.navClass]);
}
},
watch: (_watch = {}, _defineProperty(_watch, MODEL_PROP_NAME, function (newValue, oldValue) {
if (newValue !== oldValue) {
newValue = toInteger(newValue, -1);
oldValue = toInteger(oldValue, 0);
var $tab = this.tabs[newValue];
if ($tab && !$tab.disabled) {
this.activateTab($tab);
} else {
// Try next or prev tabs
if (newValue < oldValue) {
this.previousTab();
} else {
this.nextTab();
}
}
}
}), _defineProperty(_watch, "currentTab", function currentTab(newValue) {
var index = -1; // Ensure only one tab is active at most
this.tabs.forEach(function ($tab, i) {
if (i === newValue && !$tab.disabled) {
$tab.localActive = true;
index = i;
} else {
$tab.localActive = false;
}
}); // Update the v-model
this.$emit(MODEL_EVENT_NAME, index);
}), _defineProperty(_watch, "tabs", function tabs(newValue, oldValue) {
var _this = this;
// We use `_uid` instead of `safeId()`, as the later is changed in a `$nextTick()`
// if no explicit ID is provided, causing duplicate emits
if (!looseEqual(newValue.map(function ($tab) {
return $tab[COMPONENT_UID_KEY];
}), oldValue.map(function ($tab) {
return $tab[COMPONENT_UID_KEY];
}))) {
// In a `$nextTick()` to ensure `currentTab` has been set first
this.$nextTick(function () {
// We emit shallow copies of the new and old arrays of tabs,
// to prevent users from potentially mutating the internal arrays
_this.$emit(EVENT_NAME_CHANGED, newValue.slice(), oldValue.slice());
});
}
}), _defineProperty(_watch, "registeredTabs", function registeredTabs() {
this.updateTabs();
}), _watch),
created: function created() {
// Create private non-reactive props
this.$_observer = null;
},
mounted: function mounted() {
this.setObserver(true);
},
beforeDestroy: function beforeDestroy() {
this.setObserver(false); // Ensure no references to child instances exist
this.tabs = [];
},
methods: {
registerTab: function registerTab($tab) {
if (!arrayIncludes(this.registeredTabs, $tab)) {
this.registeredTabs.push($tab);
}
},
unregisterTab: function unregisterTab($tab) {
this.registeredTabs = this.registeredTabs.slice().filter(function ($t) {
return $t !== $tab;
});
},
// DOM observer is needed to detect changes in order of tabs
setObserver: function setObserver() {
var _this2 = this;
var on = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;
this.$_observer && this.$_observer.disconnect();
this.$_observer = null;
if (on) {
/* istanbul ignore next: difficult to test mutation observer in JSDOM */
var handler = function handler() {
_this2.$nextTick(function () {
requestAF(function () {
_this2.updateTabs();
});
});
}; // Watch for changes to `<b-tab>` sub components
this.$_observer = observeDom(this.$refs.content, handler, {
childList: true,
subtree: false,
attributes: true,
attributeFilter: ['id']
});
}
},
getTabs: function getTabs() {
var $tabs = this.registeredTabs.filter(function ($tab) {
return $tab.$children.filter(function ($t) {
return $t._isTab;
}).length === 0;
}); // DOM Order of Tabs
var order = [];
/* istanbul ignore next: too difficult to test */
if (IS_BROWSER && $tabs.length > 0) {
// We rely on the DOM when mounted to get the "true" order of the `<b-tab>` children
// `querySelectorAll()` always returns elements in document order, regardless of
// order specified in the selector
var selector = $tabs.map(function ($tab) {
return "#".concat($tab.safeId());
}).join(', ');
order = selectAll(selector, this.$el).map(function ($el) {
return $el.id;
}).filter(identity);
} // Stable sort keeps the original order if not found in the `order` array,
// which will be an empty array before mount
return stableSort($tabs, function (a, b) {
return order.indexOf(a.safeId()) - order.indexOf(b.safeId());
});
},
updateTabs: function updateTabs() {
var $tabs = this.getTabs(); // Find last active non-disabled tab in current tabs
// We trust tab state over `currentTab`, in case tabs were added/removed/re-ordered
var tabIndex = $tabs.indexOf($tabs.slice().reverse().find(function ($tab) {
return $tab.localActive && !$tab.disabled;
})); // Else try setting to `currentTab`
if (tabIndex < 0) {
var currentTab = this.currentTab;
if (currentTab >= $tabs.length) {
// Handle last tab being removed, so find the last non-disabled tab
tabIndex = $tabs.indexOf($tabs.slice().reverse().find(notDisabled));
} else if ($tabs[currentTab] && !$tabs[currentTab].disabled) {
// Current tab is not disabled
tabIndex = currentTab;
}
} // Else find first non-disabled tab in current tabs
if (tabIndex < 0) {
tabIndex = $tabs.indexOf($tabs.find(notDisabled));
} // Ensure only one tab is active at a time
$tabs.forEach(function ($tab, index) {
$tab.localActive = index === tabIndex;
});
this.tabs = $tabs;
this.currentTab = tabIndex;
},
// Find a button that controls a tab, given the tab reference
// Returns the button vm instance
getButtonForTab: function getButtonForTab($tab) {
return (this.$refs.buttons || []).find(function ($btn) {
return $btn.tab === $tab;
});
},
// Force a button to re-render its content, given a `<b-tab>` instance
// Called by `<b-tab>` on `update()`
updateButton: function updateButton($tab) {
var $button = this.getButtonForTab($tab);
if ($button && $button.$forceUpdate) {
$button.$forceUpdate();
}
},
// Activate a tab given a `<b-tab>` instance
// Also accessed by `<b-tab>`
activateTab: function activateTab($tab) {
var currentTab = this.currentTab,
$tabs = this.tabs;
var result = false;
if ($tab) {
var index = $tabs.indexOf($tab);
if (index !== currentTab && index > -1 && !$tab.disabled) {
var tabEvent = new BvEvent(EVENT_NAME_ACTIVATE_TAB, {
cancelable: true,
vueTarget: this,
componentId: this.safeId()
});
this.$emit(tabEvent.type, index, currentTab, tabEvent);
if (!tabEvent.defaultPrevented) {
this.currentTab = index;
result = true;
}
}
} // Couldn't set tab, so ensure v-model is up to date
/* istanbul ignore next: should rarely happen */
if (!result && this[MODEL_PROP_NAME] !== currentTab) {
this.$emit(MODEL_EVENT_NAME, currentTab);
}
return result;
},
// Deactivate a tab given a `<b-tab>` instance
// Accessed by `<b-tab>`
deactivateTab: function deactivateTab($tab) {
if ($tab) {
// Find first non-disabled tab that isn't the one being deactivated
// If no tabs are available, then don't deactivate current tab
return this.activateTab(this.tabs.filter(function ($t) {
return $t !== $tab;
}).find(notDisabled));
}
/* istanbul ignore next: should never/rarely happen */
return false;
},
// Focus a tab button given its `<b-tab>` instance
focusButton: function focusButton($tab) {
var _this3 = this;
// Wrap in `$nextTick()` to ensure DOM has completed rendering
this.$nextTick(function () {
attemptFocus(_this3.getButtonForTab($tab));
});
},
// Emit a click event on a specified `<b-tab>` component instance
emitTabClick: function emitTabClick(tab, event) {
if (isEvent(event) && tab && tab.$emit && !tab.disabled) {
tab.$emit(EVENT_NAME_CLICK, event);
}
},
// Click handler
clickTab: function clickTab($tab, event) {
this.activateTab($tab);
this.emitTabClick($tab, event);
},
// Move to first non-disabled tab
firstTab: function firstTab(focus) {
var $tab = this.tabs.find(notDisabled);
if (this.activateTab($tab) && focus) {
this.focusButton($tab);
this.emitTabClick($tab, focus);
}
},
// Move to previous non-disabled tab
previousTab: function previousTab(focus) {
var currentIndex = mathMax(this.currentTab, 0);
var $tab = this.tabs.slice(0, currentIndex).reverse().find(notDisabled);
if (this.activateTab($tab) && focus) {
this.focusButton($tab);
this.emitTabClick($tab, focus);
}
},
// Move to next non-disabled tab
nextTab: function nextTab(focus) {
var currentIndex = mathMax(this.currentTab, -1);
var $tab = this.tabs.slice(currentIndex + 1).find(notDisabled);
if (this.activateTab($tab) && focus) {
this.focusButton($tab);
this.emitTabClick($tab, focus);
}
},
// Move to last non-disabled tab
lastTab: function lastTab(focus) {
var $tab = this.tabs.slice().reverse().find(notDisabled);
if (this.activateTab($tab) && focus) {
this.focusButton($tab);
this.emitTabClick($tab, focus);
}
}
},
render: function render(h) {
var _this4 = this;
var align = this.align,
card = this.card,
end = this.end,
fill = this.fill,
firstTab = this.firstTab,
justified = this.justified,
lastTab = this.lastTab,
nextTab = this.nextTab,
noKeyNav = this.noKeyNav,
noNavStyle = this.noNavStyle,
pills = this.pills,
previousTab = this.previousTab,
small = this.small,
$tabs = this.tabs,
vertical = this.vertical; // Currently active tab
var $activeTab = $tabs.find(function ($tab) {
return $tab.localActive && !$tab.disabled;
}); // Tab button to allow focusing when no active tab found (keynav only)
var $fallbackTab = $tabs.find(function ($tab) {
return !$tab.disabled;
}); // For each `<b-tab>` found create the tab buttons
var $buttons = $tabs.map(function ($tab, index) {
var _on;
var safeId = $tab.safeId; // Ensure at least one tab button is focusable when keynav enabled (if possible)
var tabIndex = null;
if (!noKeyNav) {
// Buttons are not in tab index unless active, or a fallback tab
tabIndex = -1;
if ($tab === $activeTab || !$activeTab && $tab === $fallbackTab) {
// Place tab button in tab sequence
tabIndex = null;
}
}
return h(BVTabButton, {
props: {
controls: safeId ? safeId() : null,
id: $tab.controlledBy || (safeId ? safeId("_BV_tab_button_") : null),
noKeyNav: noKeyNav,
posInSet: index + 1,
setSize: $tabs.length,
tab: $tab,
tabIndex: tabIndex
},
on: (_on = {}, _defineProperty(_on, EVENT_NAME_CLICK, function (event) {
_this4.clickTab($tab, event);
}), _defineProperty(_on, EVENT_NAME_FIRST, firstTab), _defineProperty(_on, EVENT_NAME_PREV, previousTab), _defineProperty(_on, EVENT_NAME_NEXT, nextTab), _defineProperty(_on, EVENT_NAME_LAST, lastTab), _on),
key: $tab[COMPONENT_UID_KEY] || index,
ref: 'buttons',
// Needed to make `this.$refs.buttons` an array
refInFor: true
});
});
var $nav = h(BNav, {
class: this.localNavClass,
attrs: {
role: 'tablist',
id: this.safeId('_BV_tab_controls_')
},
props: {
fill: fill,
justified: justified,
align: align,
tabs: !noNavStyle && !pills,
pills: !noNavStyle && pills,
vertical: vertical,
small: small,
cardHeader: card && !vertical
},
ref: 'nav'
}, [this.normalizeSlot(SLOT_NAME_TABS_START) || h(), $buttons, this.normalizeSlot(SLOT_NAME_TABS_END) || h()]);
$nav = h('div', {
class: [{
'card-header': card && !vertical && !end,
'card-footer': card && !vertical && end,
'col-auto': vertical
}, this.navWrapperClass],
key: 'bv-tabs-nav'
}, [$nav]);
var $children = this.normalizeSlot() || [];
var $empty = h();
if ($children.length === 0) {
$empty = h('div', {
class: ['tab-pane', 'active', {
'card-body': card
}],
key: 'bv-empty-tab'
}, this.normalizeSlot(SLOT_NAME_EMPTY));
}
var $content = h('div', {
staticClass: 'tab-content',
class: [{
col: vertical
}, this.contentClass],
attrs: {
id: this.safeId('_BV_tab_container_')
},
key: 'bv-content',
ref: 'content'
}, [$children, $empty]); // Render final output
return h(this.tag, {
staticClass: 'tabs',
class: {
row: vertical,
'no-gutters': vertical && card
},
attrs: {
id: this.safeId()
}
}, [end ? $content : h(), $nav, end ? h() : $content]);
}
});