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import { COMPONENT_UID_KEY, Vue } from '../../vue'
import { NAME_MODAL } from '../../constants/components'
import { IS_BROWSER } from '../../constants/env'
import {
EVENT_NAME_CANCEL,
EVENT_NAME_CHANGE,
EVENT_NAME_CLOSE,
EVENT_NAME_HIDDEN,
EVENT_NAME_HIDE,
EVENT_NAME_OK,
EVENT_NAME_SHOW,
EVENT_NAME_SHOWN,
EVENT_NAME_TOGGLE,
EVENT_OPTIONS_NO_CAPTURE
} from '../../constants/events'
import { CODE_ESC } from '../../constants/key-codes'
import {
PROP_TYPE_ARRAY_OBJECT_STRING,
PROP_TYPE_ARRAY_STRING,
PROP_TYPE_BOOLEAN,
PROP_TYPE_OBJECT,
PROP_TYPE_STRING
} from '../../constants/props'
import { HTMLElement } from '../../constants/safe-types'
import {
SLOT_NAME_DEFAULT,
SLOT_NAME_MODAL_BACKDROP,
SLOT_NAME_MODAL_CANCEL,
SLOT_NAME_MODAL_FOOTER,
SLOT_NAME_MODAL_HEADER,
SLOT_NAME_MODAL_HEADER_CLOSE,
SLOT_NAME_MODAL_OK,
SLOT_NAME_MODAL_TITLE
} from '../../constants/slots'
import { arrayIncludes, concat } from '../../utils/array'
import {
attemptFocus,
closest,
contains,
getActiveElement,
getTabables,
requestAF,
select
} from '../../utils/dom'
import { getRootActionEventName, getRootEventName, eventOn, eventOff } from '../../utils/events'
import { htmlOrText } from '../../utils/html'
import { identity } from '../../utils/identity'
import { isString, isUndefinedOrNull } from '../../utils/inspect'
import { makeModelMixin } from '../../utils/model'
import { sortKeys } from '../../utils/object'
import { observeDom } from '../../utils/observe-dom'
import { makeProp, makePropsConfigurable } from '../../utils/props'
import { attrsMixin } from '../../mixins/attrs'
import { idMixin, props as idProps } from '../../mixins/id'
import { listenOnDocumentMixin } from '../../mixins/listen-on-document'
import { listenOnRootMixin } from '../../mixins/listen-on-root'
import { listenOnWindowMixin } from '../../mixins/listen-on-window'
import { normalizeSlotMixin } from '../../mixins/normalize-slot'
import { scopedStyleMixin } from '../../mixins/scoped-style'
import { BButton } from '../button/button'
import { BButtonClose } from '../button/button-close'
import { BVTransition } from '../transition/bv-transition'
import { BVTransporter } from '../transporter/transporter'
import { BvModalEvent } from './helpers/bv-modal-event.class'
import { modalManager } from './helpers/modal-manager'
// --- Constants ---
const {
mixin: modelMixin,
props: modelProps,
prop: MODEL_PROP_NAME,
event: MODEL_EVENT_NAME
} = makeModelMixin('visible', {
type: PROP_TYPE_BOOLEAN,
defaultValue: false,
event: EVENT_NAME_CHANGE
})
const TRIGGER_BACKDROP = 'backdrop'
const TRIGGER_ESC = 'esc'
const TRIGGER_FORCE = 'FORCE'
const TRIGGER_TOGGLE = 'toggle'
const BUTTON_CANCEL = 'cancel'
// TODO: This should be renamed to 'close'
const BUTTON_CLOSE = 'headerclose'
const BUTTON_OK = 'ok'
const BUTTONS = [BUTTON_CANCEL, BUTTON_CLOSE, BUTTON_OK]
// `ObserveDom` config to detect changes in modal content
// so that we can adjust the modal padding if needed
const OBSERVER_CONFIG = {
subtree: true,
childList: true,
characterData: true,
attributes: true,
attributeFilter: ['style', 'class']
}
// --- Props ---
export const props = makePropsConfigurable(
sortKeys({
...idProps,
...modelProps,
ariaLabel: makeProp(PROP_TYPE_STRING),
autoFocusButton: makeProp(
PROP_TYPE_STRING,
null,
/* istanbul ignore next */ value => {
return isUndefinedOrNull(value) || arrayIncludes(BUTTONS, value)
}
),
bodyBgVariant: makeProp(PROP_TYPE_STRING),
bodyClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
bodyTextVariant: makeProp(PROP_TYPE_STRING),
busy: makeProp(PROP_TYPE_BOOLEAN, false),
buttonSize: makeProp(PROP_TYPE_STRING),
cancelDisabled: makeProp(PROP_TYPE_BOOLEAN, false),
cancelTitle: makeProp(PROP_TYPE_STRING, 'Cancel'),
cancelTitleHtml: makeProp(PROP_TYPE_STRING),
cancelVariant: makeProp(PROP_TYPE_STRING, 'secondary'),
centered: makeProp(PROP_TYPE_BOOLEAN, false),
contentClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
dialogClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
footerBgVariant: makeProp(PROP_TYPE_STRING),
footerBorderVariant: makeProp(PROP_TYPE_STRING),
footerClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
footerTextVariant: makeProp(PROP_TYPE_STRING),
headerBgVariant: makeProp(PROP_TYPE_STRING),
headerBorderVariant: makeProp(PROP_TYPE_STRING),
headerClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
headerCloseContent: makeProp(PROP_TYPE_STRING, '×'),
headerCloseLabel: makeProp(PROP_TYPE_STRING, 'Close'),
headerCloseVariant: makeProp(PROP_TYPE_STRING),
headerTextVariant: makeProp(PROP_TYPE_STRING),
// TODO: Rename to `noBackdrop` and deprecate `hideBackdrop`
hideBackdrop: makeProp(PROP_TYPE_BOOLEAN, false),
// TODO: Rename to `noFooter` and deprecate `hideFooter`
hideFooter: makeProp(PROP_TYPE_BOOLEAN, false),
// TODO: Rename to `noHeader` and deprecate `hideHeader`
hideHeader: makeProp(PROP_TYPE_BOOLEAN, false),
// TODO: Rename to `noHeaderClose` and deprecate `hideHeaderClose`
hideHeaderClose: makeProp(PROP_TYPE_BOOLEAN, false),
ignoreEnforceFocusSelector: makeProp(PROP_TYPE_ARRAY_STRING),
lazy: makeProp(PROP_TYPE_BOOLEAN, false),
modalClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
noCloseOnBackdrop: makeProp(PROP_TYPE_BOOLEAN, false),
noCloseOnEsc: makeProp(PROP_TYPE_BOOLEAN, false),
noEnforceFocus: makeProp(PROP_TYPE_BOOLEAN, false),
noFade: makeProp(PROP_TYPE_BOOLEAN, false),
noStacking: makeProp(PROP_TYPE_BOOLEAN, false),
okDisabled: makeProp(PROP_TYPE_BOOLEAN, false),
okOnly: makeProp(PROP_TYPE_BOOLEAN, false),
okTitle: makeProp(PROP_TYPE_STRING, 'OK'),
okTitleHtml: makeProp(PROP_TYPE_STRING),
okVariant: makeProp(PROP_TYPE_STRING, 'primary'),
// HTML Element, CSS selector string or Vue component instance
returnFocus: makeProp([HTMLElement, PROP_TYPE_OBJECT, PROP_TYPE_STRING]),
scrollable: makeProp(PROP_TYPE_BOOLEAN, false),
size: makeProp(PROP_TYPE_STRING, 'md'),
static: makeProp(PROP_TYPE_BOOLEAN, false),
title: makeProp(PROP_TYPE_STRING),
titleClass: makeProp(PROP_TYPE_ARRAY_OBJECT_STRING),
titleHtml: makeProp(PROP_TYPE_STRING),
titleSrOnly: makeProp(PROP_TYPE_BOOLEAN, false),
titleTag: makeProp(PROP_TYPE_STRING, 'h5')
}),
NAME_MODAL
)
// --- Main component ---
// @vue/component
export const BModal = /*#__PURE__*/ Vue.extend({
name: NAME_MODAL,
mixins: [
attrsMixin,
idMixin,
modelMixin,
listenOnDocumentMixin,
listenOnRootMixin,
listenOnWindowMixin,
normalizeSlotMixin,
scopedStyleMixin
],
inheritAttrs: false,
props,
data() {
return {
isHidden: true, // If modal should not be in document
isVisible: false, // Controls modal visible state
isTransitioning: false, // Used for style control
isShow: false, // Used for style control
isBlock: false, // Used for style control
isOpening: false, // To signal that the modal is in the process of opening
isClosing: false, // To signal that the modal is in the process of closing
ignoreBackdropClick: false, // Used to signify if click out listener should ignore the click
isModalOverflowing: false,
// The following items are controlled by the modalManager instance
scrollbarWidth: 0,
zIndex: modalManager.getBaseZIndex(),
isTop: true,
isBodyOverflowing: false
}
},
computed: {
modalId() {
return this.safeId()
},
modalOuterId() {
return this.safeId('__BV_modal_outer_')
},
modalHeaderId() {
return this.safeId('__BV_modal_header_')
},
modalBodyId() {
return this.safeId('__BV_modal_body_')
},
modalTitleId() {
return this.safeId('__BV_modal_title_')
},
modalContentId() {
return this.safeId('__BV_modal_content_')
},
modalFooterId() {
return this.safeId('__BV_modal_footer_')
},
modalBackdropId() {
return this.safeId('__BV_modal_backdrop_')
},
modalClasses() {
return [
{
fade: !this.noFade,
show: this.isShow
},
this.modalClass
]
},
modalStyles() {
const sbWidth = `${this.scrollbarWidth}px`
return {
paddingLeft: !this.isBodyOverflowing && this.isModalOverflowing ? sbWidth : '',
paddingRight: this.isBodyOverflowing && !this.isModalOverflowing ? sbWidth : '',
// Needed to fix issue https://github.com/bootstrap-vue/bootstrap-vue/issues/3457
// Even though we are using v-show, we must ensure 'none' is restored in the styles
display: this.isBlock ? 'block' : 'none'
}
},
dialogClasses() {
return [
{
[`modal-${this.size}`]: this.size,
'modal-dialog-centered': this.centered,
'modal-dialog-scrollable': this.scrollable
},
this.dialogClass
]
},
headerClasses() {
return [
{
[`bg-${this.headerBgVariant}`]: this.headerBgVariant,
[`text-${this.headerTextVariant}`]: this.headerTextVariant,
[`border-${this.headerBorderVariant}`]: this.headerBorderVariant
},
this.headerClass
]
},
titleClasses() {
return [{ 'sr-only': this.titleSrOnly }, this.titleClass]
},
bodyClasses() {
return [
{
[`bg-${this.bodyBgVariant}`]: this.bodyBgVariant,
[`text-${this.bodyTextVariant}`]: this.bodyTextVariant
},
this.bodyClass
]
},
footerClasses() {
return [
{
[`bg-${this.footerBgVariant}`]: this.footerBgVariant,
[`text-${this.footerTextVariant}`]: this.footerTextVariant,
[`border-${this.footerBorderVariant}`]: this.footerBorderVariant
},
this.footerClass
]
},
modalOuterStyle() {
// Styles needed for proper stacking of modals
return {
position: 'absolute',
zIndex: this.zIndex
}
},
slotScope() {
return {
cancel: this.onCancel,
close: this.onClose,
hide: this.hide,
ok: this.onOk,
visible: this.isVisible
}
},
computeIgnoreEnforceFocusSelector() {
// Normalize to an single selector with selectors separated by `,`
return concat(this.ignoreEnforceFocusSelector)
.filter(identity)
.join(',')
.trim()
},
computedAttrs() {
// If the parent has a scoped style attribute, and the modal
// is portalled, add the scoped attribute to the modal wrapper
const scopedStyleAttrs = !this.static ? this.scopedStyleAttrs : {}
return {
...scopedStyleAttrs,
...this.bvAttrs,
id: this.modalOuterId
}
},
computedModalAttrs() {
const { isVisible, ariaLabel } = this
return {
id: this.modalId,
role: 'dialog',
'aria-hidden': isVisible ? null : 'true',
'aria-modal': isVisible ? 'true' : null,
'aria-label': ariaLabel,
'aria-labelledby':
this.hideHeader ||
ariaLabel ||
// TODO: Rename slot to `title` and deprecate `modal-title`
!(this.hasNormalizedSlot(SLOT_NAME_MODAL_TITLE) || this.titleHtml || this.title)
? null
: this.modalTitleId,
'aria-describedby': this.modalBodyId
}
}
},
watch: {
[MODEL_PROP_NAME](newValue, oldValue) {
if (newValue !== oldValue) {
this[newValue ? 'show' : 'hide']()
}
}
},
created() {
// Define non-reactive properties
this.$_observer = null
this.$_returnFocus = this.returnFocus || null
},
mounted() {
// Set initial z-index as queried from the DOM
this.zIndex = modalManager.getBaseZIndex()
// Listen for events from others to either open or close ourselves
// and listen to all modals to enable/disable enforce focus
this.listenOnRoot(getRootActionEventName(NAME_MODAL, EVENT_NAME_SHOW), this.showHandler)
this.listenOnRoot(getRootActionEventName(NAME_MODAL, EVENT_NAME_HIDE), this.hideHandler)
this.listenOnRoot(getRootActionEventName(NAME_MODAL, EVENT_NAME_TOGGLE), this.toggleHandler)
// Listen for `bv:modal::show events`, and close ourselves if the
// opening modal not us
this.listenOnRoot(getRootEventName(NAME_MODAL, EVENT_NAME_SHOW), this.modalListener)
// Initially show modal?
if (this[MODEL_PROP_NAME] === true) {
this.$nextTick(this.show)
}
},
beforeDestroy() {
// Ensure everything is back to normal
this.setObserver(false)
if (this.isVisible) {
this.isVisible = false
this.isShow = false
this.isTransitioning = false
}
},
methods: {
setObserver(on = false) {
this.$_observer && this.$_observer.disconnect()
this.$_observer = null
if (on) {
this.$_observer = observeDom(
this.$refs.content,
this.checkModalOverflow.bind(this),
OBSERVER_CONFIG
)
}
},
// Private method to update the v-model
updateModel(value) {
if (value !== this[MODEL_PROP_NAME]) {
this.$emit(MODEL_EVENT_NAME, value)
}
},
// Private method to create a BvModalEvent object
buildEvent(type, options = {}) {
return new BvModalEvent(type, {
// Default options
cancelable: false,
target: this.$refs.modal || this.$el || null,
relatedTarget: null,
trigger: null,
// Supplied options
...options,
// Options that can't be overridden
vueTarget: this,
componentId: this.modalId
})
},
// Public method to show modal
show() {
if (this.isVisible || this.isOpening) {
// If already open, or in the process of opening, do nothing
/* istanbul ignore next */
return
}
/* istanbul ignore next */
if (this.isClosing) {
// If we are in the process of closing, wait until hidden before re-opening
/* istanbul ignore next */
this.$once(EVENT_NAME_HIDDEN, this.show)
/* istanbul ignore next */
return
}
this.isOpening = true
// Set the element to return focus to when closed
this.$_returnFocus = this.$_returnFocus || this.getActiveElement()
const showEvt = this.buildEvent(EVENT_NAME_SHOW, {
cancelable: true
})
this.emitEvent(showEvt)
// Don't show if canceled
if (showEvt.defaultPrevented || this.isVisible) {
this.isOpening = false
// Ensure the v-model reflects the current state
this.updateModel(false)
return
}
// Show the modal
this.doShow()
},
// Public method to hide modal
hide(trigger = '') {
if (!this.isVisible || this.isClosing) {
/* istanbul ignore next */
return
}
this.isClosing = true
const hideEvt = this.buildEvent(EVENT_NAME_HIDE, {
cancelable: trigger !== TRIGGER_FORCE,
trigger: trigger || null
})
// We emit specific event for one of the three built-in buttons
if (trigger === BUTTON_OK) {
this.$emit(EVENT_NAME_OK, hideEvt)
} else if (trigger === BUTTON_CANCEL) {
this.$emit(EVENT_NAME_CANCEL, hideEvt)
} else if (trigger === BUTTON_CLOSE) {
this.$emit(EVENT_NAME_CLOSE, hideEvt)
}
this.emitEvent(hideEvt)
// Hide if not canceled
if (hideEvt.defaultPrevented || !this.isVisible) {
this.isClosing = false
// Ensure v-model reflects current state
this.updateModel(true)
return
}
// Stop observing for content changes
this.setObserver(false)
// Trigger the hide transition
this.isVisible = false
// Update the v-model
this.updateModel(false)
},
// Public method to toggle modal visibility
toggle(triggerEl) {
if (triggerEl) {
this.$_returnFocus = triggerEl
}
if (this.isVisible) {
this.hide(TRIGGER_TOGGLE)
} else {
this.show()
}
},
// Private method to get the current document active element
getActiveElement() {
// Returning focus to `document.body` may cause unwanted scrolls,
// so we exclude setting focus on body
const activeElement = getActiveElement(IS_BROWSER ? [document.body] : [])
// Preset the fallback return focus value if it is not set
// `document.activeElement` should be the trigger element that was clicked or
// in the case of using the v-model, which ever element has current focus
// Will be overridden by some commands such as toggle, etc.
// Note: On IE 11, `document.activeElement` may be `null`
// So we test it for truthiness first
// https://github.com/bootstrap-vue/bootstrap-vue/issues/3206
return activeElement && activeElement.focus ? activeElement : null
},
// Private method to finish showing modal
doShow() {
/* istanbul ignore next: commenting out for now until we can test stacking */
if (modalManager.modalsAreOpen && this.noStacking) {
// If another modal(s) is already open, wait for it(them) to close
this.listenOnRootOnce(getRootEventName(NAME_MODAL, EVENT_NAME_HIDDEN), this.doShow)
return
}
modalManager.registerModal(this)
// Place modal in DOM
this.isHidden = false
this.$nextTick(() => {
// We do this in `$nextTick()` to ensure the modal is in DOM first
// before we show it
this.isVisible = true
this.isOpening = false
// Update the v-model
this.updateModel(true)
this.$nextTick(() => {
// Observe changes in modal content and adjust if necessary
// In a `$nextTick()` in case modal content is lazy
this.setObserver(true)
})
})
},
// Transition handlers
onBeforeEnter() {
this.isTransitioning = true
this.setResizeEvent(true)
},
onEnter() {
this.isBlock = true
// We add the `show` class 1 frame later
// `requestAF()` runs the callback before the next repaint, so we need
// two calls to guarantee the next frame has been rendered
requestAF(() => {
requestAF(() => {
this.isShow = true
})
})
},
onAfterEnter() {
this.checkModalOverflow()
this.isTransitioning = false
// We use `requestAF()` to allow transition hooks to complete
// before passing control over to the other handlers
// This will allow users to not have to use `$nextTick()` or `requestAF()`
// when trying to pre-focus an element
requestAF(() => {
this.emitEvent(this.buildEvent(EVENT_NAME_SHOWN))
this.setEnforceFocus(true)
this.$nextTick(() => {
// Delayed in a `$nextTick()` to allow users time to pre-focus
// an element if the wish
this.focusFirst()
})
})
},
onBeforeLeave() {
this.isTransitioning = true
this.setResizeEvent(false)
this.setEnforceFocus(false)
},
onLeave() {
// Remove the 'show' class
this.isShow = false
},
onAfterLeave() {
this.isBlock = false
this.isTransitioning = false
this.isModalOverflowing = false
this.isHidden = true
this.$nextTick(() => {
this.isClosing = false
modalManager.unregisterModal(this)
this.returnFocusTo()
// TODO: Need to find a way to pass the `trigger` property
// to the `hidden` event, not just only the `hide` event
this.emitEvent(this.buildEvent(EVENT_NAME_HIDDEN))
})
},
emitEvent(bvEvent) {
const { type } = bvEvent
// We emit on `$root` first in case a global listener wants to cancel
// the event first before the instance emits its event
this.emitOnRoot(getRootEventName(NAME_MODAL, type), bvEvent, bvEvent.componentId)
this.$emit(type, bvEvent)
},
// UI event handlers
onDialogMousedown() {
// Watch to see if the matching mouseup event occurs outside the dialog
// And if it does, cancel the clickOut handler
const modal = this.$refs.modal
const onceModalMouseup = event => {
eventOff(modal, 'mouseup', onceModalMouseup, EVENT_OPTIONS_NO_CAPTURE)
if (event.target === modal) {
this.ignoreBackdropClick = true
}
}
eventOn(modal, 'mouseup', onceModalMouseup, EVENT_OPTIONS_NO_CAPTURE)
},
onClickOut(event) {
if (this.ignoreBackdropClick) {
// Click was initiated inside the modal content, but finished outside.
// Set by the above onDialogMousedown handler
this.ignoreBackdropClick = false
return
}
// Do nothing if not visible, backdrop click disabled, or element
// that generated click event is no longer in document body
if (!this.isVisible || this.noCloseOnBackdrop || !contains(document.body, event.target)) {
return
}
// If backdrop clicked, hide modal
if (!contains(this.$refs.content, event.target)) {
this.hide(TRIGGER_BACKDROP)
}
},
onOk() {
this.hide(BUTTON_OK)
},
onCancel() {
this.hide(BUTTON_CANCEL)
},
onClose() {
this.hide(BUTTON_CLOSE)
},
onEsc(event) {
// If ESC pressed, hide modal
if (event.keyCode === CODE_ESC && this.isVisible && !this.noCloseOnEsc) {
this.hide(TRIGGER_ESC)
}
},
// Document focusin listener
focusHandler(event) {
// If focus leaves modal content, bring it back
const content = this.$refs.content
const { target } = event
if (
this.noEnforceFocus ||
!this.isTop ||
!this.isVisible ||
!content ||
document === target ||
contains(content, target) ||
(this.computeIgnoreEnforceFocusSelector &&
closest(this.computeIgnoreEnforceFocusSelector, target, true))
) {
return
}
const tabables = getTabables(this.$refs.content)
const bottomTrap = this.$refs['bottom-trap']
const topTrap = this.$refs['top-trap']
if (bottomTrap && target === bottomTrap) {
// If user pressed TAB out of modal into our bottom trab trap element
// Find the first tabable element in the modal content and focus it
if (attemptFocus(tabables[0])) {
// Focus was successful
return
}
} else if (topTrap && target === topTrap) {
// If user pressed CTRL-TAB out of modal and into our top tab trap element
// Find the last tabable element in the modal content and focus it
if (attemptFocus(tabables[tabables.length - 1])) {
// Focus was successful
return
}
}
// Otherwise focus the modal content container
attemptFocus(content, { preventScroll: true })
},
// Turn on/off focusin listener
setEnforceFocus(on) {
this.listenDocument(on, 'focusin', this.focusHandler)
},
// Resize listener
setResizeEvent(on) {
this.listenWindow(on, 'resize', this.checkModalOverflow)
this.listenWindow(on, 'orientationchange', this.checkModalOverflow)
},
// Root listener handlers
showHandler(id, triggerEl) {
if (id === this.modalId) {
this.$_returnFocus = triggerEl || this.getActiveElement()
this.show()
}
},
hideHandler(id) {
if (id === this.modalId) {
this.hide('event')
}
},
toggleHandler(id, triggerEl) {
if (id === this.modalId) {
this.toggle(triggerEl)
}
},
modalListener(bvEvent) {
// If another modal opens, close this one if stacking not permitted
if (this.noStacking && bvEvent.vueTarget !== this) {
this.hide()
}
},
// Focus control handlers
focusFirst() {
// Don't try and focus if we are SSR
if (IS_BROWSER) {
requestAF(() => {
const modal = this.$refs.modal
const content = this.$refs.content
const activeElement = this.getActiveElement()
// If the modal contains the activeElement, we don't do anything
if (modal && content && !(activeElement && contains(content, activeElement))) {
const ok = this.$refs['ok-button']
const cancel = this.$refs['cancel-button']
const close = this.$refs['close-button']
// Focus the appropriate button or modal content wrapper
const autoFocus = this.autoFocusButton
/* istanbul ignore next */
const el =
autoFocus === BUTTON_OK && ok
? ok.$el || ok
: autoFocus === BUTTON_CANCEL && cancel
? cancel.$el || cancel
: autoFocus === BUTTON_CLOSE && close
? close.$el || close
: content
// Focus the element
attemptFocus(el)
if (el === content) {
// Make sure top of modal is showing (if longer than the viewport)
this.$nextTick(() => {
modal.scrollTop = 0
})
}
}
})
}
},
returnFocusTo() {
// Prefer `returnFocus` prop over event specified
// `return_focus` value
let el = this.returnFocus || this.$_returnFocus || null
this.$_returnFocus = null
this.$nextTick(() => {
// Is el a string CSS selector?
el = isString(el) ? select(el) : el
if (el) {
// Possibly could be a component reference
el = el.$el || el
attemptFocus(el)
}
})
},
checkModalOverflow() {
if (this.isVisible) {
const modal = this.$refs.modal
this.isModalOverflowing = modal.scrollHeight > document.documentElement.clientHeight
}
},
makeModal(h) {
// Modal header
let $header = h()
if (!this.hideHeader) {
// TODO: Rename slot to `header` and deprecate `modal-header`
let $modalHeader = this.normalizeSlot(SLOT_NAME_MODAL_HEADER, this.slotScope)
if (!$modalHeader) {
let $closeButton = h()
if (!this.hideHeaderClose) {
$closeButton = h(
BButtonClose,
{
props: {
content: this.headerCloseContent,
disabled: this.isTransitioning,
ariaLabel: this.headerCloseLabel,
textVariant: this.headerCloseVariant || this.headerTextVariant
},
on: { click: this.onClose },
ref: 'close-button'
},
// TODO: Rename slot to `header-close` and deprecate `modal-header-close`
[this.normalizeSlot(SLOT_NAME_MODAL_HEADER_CLOSE)]
)
}
$modalHeader = [
h(
this.titleTag,
{
staticClass: 'modal-title',
class: this.titleClasses,
attrs: { id: this.modalTitleId },
// TODO: Rename slot to `title` and deprecate `modal-title`
domProps: this.hasNormalizedSlot(SLOT_NAME_MODAL_TITLE)
? {}
: htmlOrText(this.titleHtml, this.title)
},
// TODO: Rename slot to `title` and deprecate `modal-title`
this.normalizeSlot(SLOT_NAME_MODAL_TITLE, this.slotScope)
),
$closeButton
]
}
$header = h(
'header',
{
staticClass: 'modal-header',
class: this.headerClasses,
attrs: { id: this.modalHeaderId },
ref: 'header'
},
[$modalHeader]
)
}
// Modal body
const $body = h(
'div',
{
staticClass: 'modal-body',
class: this.bodyClasses,
attrs: { id: this.modalBodyId },
ref: 'body'
},
this.normalizeSlot(SLOT_NAME_DEFAULT, this.slotScope)
)
// Modal footer
let $footer = h()
if (!this.hideFooter) {
// TODO: Rename slot to `footer` and deprecate `modal-footer`
let $modalFooter = this.normalizeSlot(SLOT_NAME_MODAL_FOOTER, this.slotScope)
if (!$modalFooter) {
let $cancelButton = h()
if (!this.okOnly) {
$cancelButton = h(
BButton,
{
props: {
variant: this.cancelVariant,
size: this.buttonSize,
disabled: this.cancelDisabled || this.busy || this.isTransitioning
},
// TODO: Rename slot to `cancel-button` and deprecate `modal-cancel`
domProps: this.hasNormalizedSlot(SLOT_NAME_MODAL_CANCEL)
? {}
: htmlOrText(this.cancelTitleHtml, this.cancelTitle),
on: { click: this.onCancel },
ref: 'cancel-button'
},
// TODO: Rename slot to `cancel-button` and deprecate `modal-cancel`
this.normalizeSlot(SLOT_NAME_MODAL_CANCEL)
)
}
const $okButton = h(
BButton,
{
props: {
variant: this.okVariant,
size: this.buttonSize,
disabled: this.okDisabled || this.busy || this.isTransitioning
},
// TODO: Rename slot to `ok-button` and deprecate `modal-ok`
domProps: this.hasNormalizedSlot(SLOT_NAME_MODAL_OK)
? {}
: htmlOrText(this.okTitleHtml, this.okTitle),
on: { click: this.onOk },
ref: 'ok-button'
},
// TODO: Rename slot to `ok-button` and deprecate `modal-ok`
this.normalizeSlot(SLOT_NAME_MODAL_OK)
)
$modalFooter = [$cancelButton, $okButton]
}
$footer = h(
'footer',
{
staticClass: 'modal-footer',
class: this.footerClasses,
attrs: { id: this.modalFooterId },
ref: 'footer'
},
[$modalFooter]
)
}
// Assemble modal content
const $modalContent = h(
'div',
{
staticClass: 'modal-content',
class: this.contentClass,
attrs: {
id: this.modalContentId,
tabindex: '-1'
},
ref: 'content'
},
[$header, $body, $footer]
)
// Tab traps to prevent page from scrolling to next element in
// tab index during enforce-focus tab cycle
let $tabTrapTop = h()
let $tabTrapBottom = h()
if (this.isVisible && !this.noEnforceFocus) {
$tabTrapTop = h('span', {
attrs: { tabindex: '0' },
ref: 'top-trap'
})
$tabTrapBottom = h('span', {
attrs: { tabindex: '0' },
ref: 'bottom-trap'
})
}
// Modal dialog wrapper
const $modalDialog = h(
'div',
{
staticClass: 'modal-dialog',
class: this.dialogClasses,
on: { mousedown: this.onDialogMousedown },
ref: 'dialog'
},
[$tabTrapTop, $modalContent, $tabTrapBottom]
)
// Modal
let $modal = h(
'div',
{
staticClass: 'modal',
class: this.modalClasses,
style: this.modalStyles,
attrs: this.computedModalAttrs,
on: { keydown: this.onEsc, click: this.onClickOut },
directives: [{ name: 'show', value: this.isVisible }],
ref: 'modal'
},
[$modalDialog]
)
// Wrap modal in transition
// Sadly, we can't use `BVTransition` here due to the differences in
// transition durations for `.modal` and `.modal-dialog`
// At least until https://github.com/vuejs/vue/issues/9986 is resolved
$modal = h(
'transition',
{
props: {
enterClass: '',
enterToClass: '',
enterActiveClass: '',
leaveClass: '',
leaveActiveClass: '',
leaveToClass: ''
},
on: {
beforeEnter: this.onBeforeEnter,
enter: this.onEnter,
afterEnter: this.onAfterEnter,
beforeLeave: this.onBeforeLeave,
leave: this.onLeave,
afterLeave: this.onAfterLeave
}
},
[$modal]
)
// Modal backdrop
let $backdrop = h()
if (!this.hideBackdrop && this.isVisible) {
$backdrop = h(
'div',
{
staticClass: 'modal-backdrop',
attrs: { id: this.modalBackdropId }
},
// TODO: Rename slot to `backdrop` and deprecate `modal-backdrop`
this.normalizeSlot(SLOT_NAME_MODAL_BACKDROP)
)
}
$backdrop = h(BVTransition, { props: { noFade: this.noFade } }, [$backdrop])
// Assemble modal and backdrop in an outer <div>
return h(
'div',
{
style: this.modalOuterStyle,
attrs: this.computedAttrs,
key: `modal-outer-${this[COMPONENT_UID_KEY]}`
},
[$modal, $backdrop]
)
}
},
render(h) {
if (this.static) {
return this.lazy && this.isHidden ? h() : this.makeModal(h)
} else {
return this.isHidden ? h() : h(BVTransporter, [this.makeModal(h)])
}
}
})