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fix(b-form-datepicker/b-form-timepicker/b-nav-item-dropdown): dropdown positioning handling (closes #5700, #5630) (#5765)
* fix(b-form-datepicker/b-form-timepicker/b-nav-item-dropdown): dropdown positioning handling * Update events.js * Update bv-form-btn-label-control.js * Update bv-form-btn-label-control.js * Update bv-form-btn-label-control.js
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‎src/components/dropdown/README.md‎

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@@ -133,7 +133,7 @@ Like to move your menu away from the toggle buttons a bit? Then use the `offset`
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number of pixels to push right (or left when negative) from the toggle button:
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- Specified as a number of pixels: positive for right shift, negative for left shift.
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- Specify the distance in CSS units (i.e. `0.3rem`, `4px`, `1.2em`, etc) passed as a string.
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- Specify the distance in CSS units (i.e. `0.3rem`, `4px`, `1.2em`, etc.) passed as a string.
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```html
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<div>
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default), `'viewport'`, `'window'` or a reference to an HTML element. The boundary value is passed
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directly to Popper.js's `boundariesElement` configuration option.
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**Note:** when `boundary` is any value other than the default of `'scrollParent'`, the style
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**Note:** When `boundary` is any value other than the default of `'scrollParent'`, the style
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`position: static` is applied to to the dropdown component's root element in order to allow the menu
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to "break-out" of its scroll container. In some situations this may affect your layout or
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positioning of the dropdown trigger button. In these cases you may need to wrap your dropdown inside
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another element.
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### Advanced Popper.js configuration
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If you need some advanced Popper.js configuration to make dropdowns behave to your needs, you can
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use the `popper-opts` prop to pass down a custom configuration object which will be deeply merged
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with the BootstrapVue defaults.
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Head to the [Popper.js docs](https://popper.js.org/docs/v1/) to see all the configuration options.
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**Note**: The props `offset`, `boundary` and `no-flip` may loose their effect when you overwrite the
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Popper.js configuration.
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## Split button support
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Create a split dropdown button, where the left button provides standard `click` event and link

‎src/components/dropdown/dropdown.js‎

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@@ -100,9 +100,10 @@ export const BDropdown = /*#__PURE__*/ Vue.extend({
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props,
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computed: {
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dropdownClasses() {
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const { block, split, boundary } = this
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const { block, split } = this
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return [
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this.directionClass,
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this.boundaryClass,
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{
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show: this.visible,
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// The 'btn-group' class is required in `split` mode for button alignment
@@ -111,11 +112,7 @@ export const BDropdown = /*#__PURE__*/ Vue.extend({
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'btn-group': split || !block,
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// When `block` is enabled and we are in `split` mode the 'd-flex' class
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// needs to be applied to allow the buttons to stretch to full width
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'd-flex': block && split,
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// Position `static` is needed to allow menu to "breakout" of the `scrollParent`
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// boundaries when boundary is anything other than `scrollParent`
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// See: https://github.com/twbs/bootstrap/issues/24251#issuecomment-341413786
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'position-static': boundary !== 'scrollParent' || !boundary
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'd-flex': block && split
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}
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]
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},

‎src/components/form-datepicker/README.md‎

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@@ -300,8 +300,8 @@ either `min` or `max` (depending on which is closes to today's date).
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Use the dropdown props `right`, `dropup`, `dropright`, `dropleft`, `no-flip`, and `offset` to
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control the positioning of the popup calendar.
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Refer to the [`<b-dropdown>` documentation](/docs/components/dropdown) for details on the effects
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and usage of these props.
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Refer to the [`<b-dropdown>` positioning section](/docs/components/dropdown#positioning) for details
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on the effects and usage of these props.
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### Initial open calendar date
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‎src/components/form-timepicker/README.md‎

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@@ -205,8 +205,8 @@ keep these labels short.
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Use the dropdown props `right`, `dropup`, `dropright`, `dropleft`, `no-flip`, and `offset` to
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control the positioning of the popup calendar.
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Refer to the [`<b-dropdown>` documentation](/docs/components/dropdown) for details on the effects
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and usage of these props.
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Refer to the [`<b-dropdown>` positioning section](/docs/components/dropdown#positioning) for details
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on the effects and usage of these props.
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### Button only mode
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‎src/components/nav/README.md‎

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@@ -185,7 +185,7 @@ Use `<b-nav-item-dropdown>` to place dropdown items within your nav.
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</b-nav>
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</div>
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<!-- b-nav-dropdown.vue -->
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<!-- b-nav-item-dropdown.vue -->
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```
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Sometimes you want to add your own class names to the generated dropdown toggle button, that by
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impacted due to larger overall memory utilization. You can instruct `<b-nav-item-dropdown>` to
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render the menu contents only when it is shown by setting the `lazy` prop to true.
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### Dropdown placement
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Use the dropdown props `right`, `dropup`, `dropright`, `dropleft`, `no-flip`, and `offset` to
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control the positioning of `<b-nav-item-dropdown>`.
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Refer to the [`<b-dropdown>` positioning section](/docs/components/dropdown#positioning) for details
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on the effects and usage of these props.
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### Dropdown implementation note
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Note that the toggle button is actually rendered as a link `<a>` tag with `role="button"` for
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list by assistive technologies.
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When using a `<b-nav-item-dropdown>` in your `<b-nav>`, be sure to assign a unique `id` prop value
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to the `<b-nav-dropdown>` so that the appropriate `aria-*` attributes can be automatically
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to the `<b-nav-item-dropdown>` so that the appropriate `aria-*` attributes can be automatically
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generated.
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### Tabbed interface accessibility

‎src/components/nav/nav-item-dropdown.js‎

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@@ -28,7 +28,7 @@ export const BNavItemDropdown = /*#__PURE__*/ Vue.extend({
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return true
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},
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dropdownClasses() {
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return [this.directionClass, { show: this.visible }]
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return [this.directionClass, this.boundaryClass, { show: this.visible }]
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},
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menuClasses() {
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return [

‎src/mixins/dropdown.js‎

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@@ -4,6 +4,7 @@ import { BvEvent } from '../utils/bv-event.class'
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import { attemptFocus, closest, contains, isVisible, requestAF, selectAll } from '../utils/dom'
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import { stopEvent } from '../utils/events'
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import { isNull } from '../utils/inspect'
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import { mergeDeep } from '../utils/object'
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import { HTMLElement } from '../utils/safe-types'
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import { warn } from '../utils/warn'
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import clickOutMixin from './click-out'
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default: false
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},
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offset: {
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// Number of pixels to offset menu, or a CSS unit value (i.e. 1px, 1rem, etc)
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// Number of pixels to offset menu, or a CSS unit value (i.e. `1px`, `1rem`, etc.)
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type: [Number, String],
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default: 0
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},
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noFlip: {
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// Disable auto-flipping of menu from bottom<=>top
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// Disable auto-flipping of menu from bottom <=> top
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type: Boolean,
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default: false
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},
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popperOpts: {
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// type: Object,
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type: Object,
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default: () => {}
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},
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boundary: {
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return 'dropleft'
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}
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return ''
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},
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boundaryClass() {
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// Position `static` is needed to allow menu to "breakout" of the `scrollParent`
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// boundaries when boundary is anything other than `scrollParent`
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// See: https://github.com/twbs/bootstrap/issues/24251#issuecomment-341413786
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const { boundary } = this
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return boundary !== 'scrollParent' || !boundary ? 'position-static' : ''
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}
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},
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watch: {
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flip: { enabled: !this.noFlip }
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}
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}
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if (this.boundary) {
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popperConfig.modifiers.preventOverflow = { boundariesElement: this.boundary }
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const boundariesElement = this.boundary
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if (boundariesElement) {
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popperConfig.modifiers.preventOverflow = { boundariesElement }
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}
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return { ...popperConfig, ...(this.popperOpts || {}) }
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return mergeDeep(popperConfig, this.popperOpts || {})
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},
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// Turn listeners on/off while open
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whileOpenListen(isOpen) {

‎src/utils/bv-form-btn-label-control.js‎

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@@ -264,7 +264,10 @@ export const BVFormBtnLabelControl = /*#__PURE__*/ Vue.extend({
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on: {
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// Disable bubbling of the click event to
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// prevent menu from closing and re-opening
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'!click': stopEvent
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'!click': /* istanbul ignore next */ evt => {
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stopEvent(evt, { preventDefault: false })
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}
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}
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},
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[
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staticClass: 'b-form-btn-label-control dropdown',
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class: [
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this.directionClass,
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this.boundaryClass,
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{
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'btn-group': buttonOnly,
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'form-control': !buttonOnly,

‎src/utils/events.js‎

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@@ -42,8 +42,13 @@ export const eventOnOff = (on, ...args) => {
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}
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// Utility method to prevent the default event handling and propagation
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export const stopEvent = (evt, { propagation = true, immediatePropagation = false } = {}) => {
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evt.preventDefault()
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export const stopEvent = (
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evt,
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{ preventDefault = true, propagation = true, immediatePropagation = false } = {}
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) => {
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if (preventDefault) {
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evt.preventDefault()
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}
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if (propagation) {
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evt.stopPropagation()
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}

‎src/utils/object.js‎

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@@ -61,6 +61,26 @@ export const omit = (obj, props) =>
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.filter(key => props.indexOf(key) === -1)
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.reduce((result, key) => ({ ...result, [key]: obj[key] }), {})
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/**
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* Merges two object deeply together
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* @link https://gist.github.com/Salakar/1d7137de9cb8b704e48a
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*/
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export const mergeDeep = (target, source) => {
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if (isObject(target) && isObject(source)) {
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keys(source).forEach(key => {
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if (isObject(source[key])) {
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if (!target[key] || !isObject(target[key])) {
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target[key] = source[key]
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}
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mergeDeep(target[key], source[key])
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} else {
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assign(target, { [key]: source[key] })
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}
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})
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}
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return target
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}
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/**
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* Convenience method to create a read-only descriptor
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*/

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