feat(b-form-datepicker, b-form-timepicker): add support for icon butt…

…on only mode (closes #4888) (#4915)

Co-authored-by: Jacob Müller

src/components/form-datepicker/README.md

@@ -313,6 +313,58 @@ component's value.
 Want a fancy popup with a dark background instead of a light background? Set the `dark` prop to
 `true` to enable the dark background.
 
+### Button only mode
+
+<span class="badge badge-info small">v2.7.0+</span>
+
+Fancy just a button that launches the date picker dialog, or want to provide your own optional text
+input field? Use the `button-only` prop to render the datepicker as a dropdown button. The formatted
+date label will be rendered with the class `sr-only` (available only to screen readers).
+
+In the following simple example, we are placing the datepicker (button only mode) as an append to a
+`<b-input-group>`:
+
+```html
+<template>
+  <div>
+    <label for="example-input">Choose a date</label>
+    <b-input-group class="mb-3">
+      <b-form-input
+        id="example-input"
+        v-model="value"
+        type="text"
+        placeholder="YYYY-MM-DD"
+      ></b-form-input>
+      <b-input-group-append>
+        <b-form-datepicker
+          v-model="value"
+          button-only
+          right
+          locale="en-US"
+          aria-controls="example-input"
+        ></b-form-datepicker>
+      </b-input-group-append">
+    </b-input-group>
+    <p>Value: '{{ value }}'</p>
+  </div>
+</template>
+
+<script>
+  export default {
+    data() {
+      return {
+        value: ''
+      }
+    }
+  }
+</script>
+
+<!-- b-form-datepicker-button-only.vue -->
+```
+
+Control the size of the button via the `size` prop, and the button variant via the `button-variant`
+prop.
+
 ### Date string format
 
 <span class="badge badge-info small">v2.6.0+</span>
@@ -331,7 +383,8 @@ properties for the `Intl.DateTimeFormat` object (see also
       :date-format-options="{ year: 'numeric', month: 'short', day: '2-digit', weekday: 'short' }"
       locale="en"
     ></b-form-datepicker>
-    <label for="datepicker-dateformat2">Short date format</label>
+
+    <label class="mt-3" for="datepicker-dateformat2">Short date format</label>
     <b-form-datepicker
       id="datepicker-dateformat2"
       :date-format-options="{ year: 'numeric', month: 'numeric', day: 'numeric' }"

src/components/form-datepicker/form-datepicker.js

@@ -108,6 +108,15 @@ const propsMixin = {
       type: String,
       default: null
     },
+    buttonOnly: {
+      type: Boolean,
+      default: false
+    },
+    buttonVariant: {
+      // Applicable in button only mode
+      type: String,
+      default: 'secondary'
+    },
     calendarWidth: {
       // Width of the calendar dropdown
       type: String,
@@ -310,7 +319,10 @@ export const BFormDatepicker = /*#__PURE__*/ Vue.extend({
       this.localYMD = formatYMD(newVal) || ''
     },
     localYMD(newVal) {
-      this.$emit('input', this.valueAsDate ? parseYMD(newVal) || null : newVal || '')
+      // We only update the v-model when the datepicker is open
+      if (this.isVisible) {
+        this.$emit('input', this.valueAsDate ? parseYMD(newVal) || null : newVal || '')
+      }
     },
     calendarYM(newVal, oldVal) /* istanbul ignore next */ {
       // Displayed calendar month has changed

src/components/form-datepicker/form-datepicker.spec.js

@@ -42,9 +42,11 @@ describe('form-date', () => {
     await waitRAF()
 
     expect(wrapper.classes()).toContain('b-form-datepicker')
+    expect(wrapper.classes()).toContain('b-form-btn-label-control')
     expect(wrapper.classes()).toContain('form-control')
     expect(wrapper.classes()).toContain('dropdown')
     expect(wrapper.classes()).not.toContain('show')
+    expect(wrapper.classes()).not.toContain('btn-group')
     expect(wrapper.attributes('role')).toEqual('group')
 
     expect(wrapper.find('.dropdown-menu').exists()).toBe(true)
@@ -54,6 +56,7 @@ describe('form-date', () => {
 
     expect(wrapper.find('label.form-control').exists()).toBe(true)
     expect(wrapper.find('label.form-control').attributes('for')).toEqual('test-base')
+    expect(wrapper.find('label.form-control').classes()).not.toContain('sr-only')
 
     expect(wrapper.find('input[type="hidden"]').exists()).toBe(false)
 
@@ -66,6 +69,48 @@ describe('form-date', () => {
     wrapper.destroy()
   })
 
+  it('has expected base structure in button-only mode', async () => {
+    const wrapper = mount(BFormDatepicker, {
+      attachToDocument: true,
+      propsData: {
+        id: 'test-button-only',
+        buttonOnly: true
+      }
+    })
+
+    expect(wrapper.isVueInstance()).toBe(true)
+    expect(wrapper.is('div')).toBe(true)
+    await waitNT(wrapper.vm)
+    await waitRAF()
+
+    expect(wrapper.classes()).toContain('b-form-datepicker')
+    expect(wrapper.classes()).not.toContain('b-form-btn-label-control')
+    expect(wrapper.classes()).not.toContain('form-control')
+    expect(wrapper.classes()).toContain('dropdown')
+    expect(wrapper.classes()).not.toContain('show')
+    expect(wrapper.classes()).toContain('btn-group')
+    expect(wrapper.attributes('role')).not.toEqual('group')
+
+    expect(wrapper.find('.dropdown-menu').exists()).toBe(true)
+    expect(wrapper.find('.dropdown-menu').classes()).not.toContain('show')
+    expect(wrapper.find('.dropdown-menu').attributes('role')).toEqual('dialog')
+    expect(wrapper.find('.dropdown-menu').attributes('aria-modal')).toEqual('false')
+
+    expect(wrapper.find('label.form-control').exists()).toBe(true)
+    expect(wrapper.find('label.form-control').attributes('for')).toEqual('test-button-only')
+    expect(wrapper.find('label.form-control').classes()).toContain('sr-only')
+
+    expect(wrapper.find('input[type="hidden"]').exists()).toBe(false)
+
+    const $btn = wrapper.find('button#test-button-only')
+    expect($btn.exists()).toBe(true)
+    expect($btn.attributes('aria-haspopup')).toEqual('dialog')
+    expect($btn.attributes('aria-expanded')).toEqual('false')
+    expect($btn.find('svg.bi-calendar').exists()).toBe(true)
+
+    wrapper.destroy()
+  })
+
   it('renders hidden input when name prop is set', async () => {
     const wrapper = mount(BFormDatepicker, {
       attachToDocument: true,

src/components/form-datepicker/package.json

@@ -69,6 +69,16 @@
             "prop": "direction",
             "description": "Set to the string 'rtl' or 'ltr' to explicitly force the calendar to render in right-to-left or left-ro-right (respectively) mode. Defaults to the resolved locale's directionality"
           },
+          {
+            "prop": "buttonOnly",
+            "version": "2.7.0",
+            "description": "Renders the datepicker as a dropdown button instead of a form-control"
+          },
+          {
+            "prop": "buttonVariant",
+            "version": "2.7.0",
+            "description": "The button variant to use when in `button-only` mode. Has no effect if prop `button-only` is not set"
+          },
           {
             "prop": "calendarWidth",
             "version": "2.6.0",

src/components/form-timepicker/README.md

@@ -208,6 +208,60 @@ control the positioning of the popup calendar.
 Refer to the [`<b-dropdown>` documentation](/docs/components/dropdown) for details on the effects
 and usage of these props.
 
+### Button only mode
+
+<span class="badge badge-info small">v2.7.0+</span>
+
+Fancy just a button that launches the timepicker dialog, or want to provide your own optional text
+input field? Use the `button-only` prop to render the timepicker as a dropdown button. The formatted
+time label will be rendered with the class `sr-only` (available only to screen readers).
+
+In the following simple example, we are placing the timepicker (button only mode) as an append to a
+`<b-input-group>`:
+
+```html
+<template>
+  <div>
+    <label for="example-input">Choose a time</label>
+    <b-input-group class="mb-3">
+      <b-form-input
+        id="example-input"
+        v-model="value"
+        type="text"
+        placeholder="HH:mm:ss"
+      ></b-form-input>
+      <b-input-group-append>
+        <b-form-timepicker
+          v-model="value"
+          button-only
+          right
+          show-seconds
+          :hour12="false"
+          locale="en-US"
+          aria-controls="example-input"
+        ></b-form-timepicker>
+      </b-input-group-append">
+    </b-input-group>
+    <p>Value: '{{ value }}'</p>
+  </div>
+</template>
+
+<script>
+  export default {
+    data() {
+      return {
+        value: ''
+      }
+    }
+  }
+</script>
+
+<!-- b-form-timepicker-button-only.vue -->
+```
+
+Control the size of the button via the `size` prop, and the button variant via the `button-variant`
+prop.
+
 ## Internationalization
 
 Internationalization of the time interface is provided via

src/components/form-timepicker/form-timepicker.js

@@ -90,6 +90,15 @@ const propsMixin = {
       type: [Number, String],
       default: 1
     },
+    buttonOnly: {
+      type: Boolean,
+      default: false
+    },
+    buttonVariant: {
+      // Applicable in button only mode
+      type: String,
+      default: 'secondary'
+    },
     nowButton: {
       type: Boolean,
       default: false
@@ -240,7 +249,12 @@ export const BFormTimepicker = /*#__PURE__*/ Vue.extend({
       this.localHMS = newVal || ''
     },
     localHMS(newVal) {
-      this.$emit('input', newVal || '')
+      // We only update hte v-model value when the timepicker
+      // is open, to prevent cursor jumps when bound to a
+      // text input in button only mode
+      if (this.isVisible) {
+        this.$emit('input', newVal || '')
+      }
     }
   },
   methods: {

src/components/form-timepicker/form-timepicker.spec.js

@@ -41,9 +41,11 @@ describe('form-timepicker', () => {
     await waitRAF()
 
     expect(wrapper.classes()).toContain('b-form-timepicker')
+    expect(wrapper.classes()).toContain('b-form-btn-label-control')
     expect(wrapper.classes()).toContain('form-control')
     expect(wrapper.classes()).toContain('dropdown')
     expect(wrapper.classes()).not.toContain('show')
+    expect(wrapper.classes()).not.toContain('btn-group')
     expect(wrapper.attributes('role')).toEqual('group')
 
     expect(wrapper.find('.dropdown-menu').exists()).toBe(true)
@@ -66,6 +68,49 @@ describe('form-timepicker', () => {
     wrapper.destroy()
   })
 
+  it('has expected default structure when button-only is true', async () => {
+    const wrapper = mount(BFormTimepicker, {
+      attachToDocument: true,
+      propsData: {
+        id: 'test-button-only',
+        buttonOnly: true
+      }
+    })
+
+    expect(wrapper.isVueInstance()).toBe(true)
+    expect(wrapper.is('div')).toBe(true)
+    await waitNT(wrapper.vm)
+    await waitRAF()
+
+    expect(wrapper.classes()).toContain('b-form-timepicker')
+    expect(wrapper.classes()).not.toContain('b-form-btn-label-control')
+    expect(wrapper.classes()).not.toContain('form-control')
+    expect(wrapper.classes()).toContain('dropdown')
+    expect(wrapper.classes()).not.toContain('show')
+    expect(wrapper.classes()).toContain('btn-group')
+    expect(wrapper.attributes('role')).not.toEqual('group')
+
+    expect(wrapper.find('.dropdown-menu').exists()).toBe(true)
+    expect(wrapper.find('.dropdown-menu').classes()).not.toContain('show')
+    expect(wrapper.find('.dropdown-menu').attributes('role')).toEqual('dialog')
+    expect(wrapper.find('.dropdown-menu').attributes('aria-modal')).toEqual('false')
+
+    expect(wrapper.find('label.form-control').exists()).toBe(true)
+    expect(wrapper.find('label.form-control').attributes('for')).toEqual('test-button-only')
+    expect(wrapper.find('label.form-control').text()).toContain('No time selected')
+    expect(wrapper.find('label.form-control').classes()).toContain('sr-only')
+
+    expect(wrapper.find('input[type="hidden"]').exists()).toBe(false)
+
+    const $btn = wrapper.find('button#test-button-only')
+    expect($btn.exists()).toBe(true)
+    expect($btn.attributes('aria-haspopup')).toEqual('dialog')
+    expect($btn.attributes('aria-expanded')).toEqual('false')
+    expect($btn.find('svg.bi-clock').exists()).toBe(true)
+
+    wrapper.destroy()
+  })
+
   it('renders hidden input when name prop is set', async () => {
     const wrapper = mount(BFormTimepicker, {
       attachToDocument: true,

src/components/form-timepicker/package.json

@@ -62,6 +62,16 @@
             "prop": "hideHeader",
             "description": "When set, visually hides the selected date header"
           },
+          {
+            "prop": "buttonOnly",
+            "version": "2.7.0",
+            "description": "Renders the datepicker as a dropdown button instead of a form-control"
+          },
+          {
+            "prop": "buttonVariant",
+            "version": "2.7.0",
+            "description": "The button variant to use when in `button-only` mode. Has no effect if prop `button-only` is not set"
+          },
           {
             "prop": "menuClass",
             "description": "Class (or classes) to apply to to popup menu wrapper"