Add `FormInputGroupCopyToggleVisibility` Vue component

A component to render a value in an input and allow the user to
show/hide and copy the value.

app/assets/javascripts/vue_shared/components/form/input_copy_toggle_visibility.stories.js

+import InputCopyToggleVisibility from './input_copy_toggle_visibility.vue';
+
+export default {
+  component: InputCopyToggleVisibility,
+  title: 'vue_shared/components/form/input_copy_toggle_visibility',
+};
+
+const defaultProps = {
+  value: 'hR8x1fuJbzwu5uFKLf9e',
+  formInputGroupProps: { class: 'gl-form-input-xl' },
+};
+
+const Template = (args, { argTypes }) => ({
+  components: { InputCopyToggleVisibility },
+  props: Object.keys(argTypes),
+  template: `<input-copy-toggle-visibility
+      :value="value" 
+      :initial-visibility="initialVisibility"
+      :show-toggle-visibility-button="showToggleVisibilityButton"
+      :show-copy-button="showCopyButton"
+      :form-input-group-props="formInputGroupProps"
+      :copy-button-title="copyButtonTitle"
+    />`,
+});
+
+export const Default = Template.bind({});
+Default.args = defaultProps;

app/assets/javascripts/vue_shared/components/form/input_copy_toggle_visibility.vue

+<script>
+import { GlFormInputGroup, GlFormGroup, GlButton, GlTooltipDirective } from '@gitlab/ui';
+
+import { __ } from '~/locale';
+import ClipboardButton from '~/vue_shared/components/clipboard_button.vue';
+
+export default {
+  name: 'InputCopyToggleVisibility',
+  i18n: {
+    toggleVisibilityLabelHide: __('Click to hide'),
+    toggleVisibilityLabelReveal: __('Click to reveal'),
+  },
+  components: {
+    GlFormInputGroup,
+    GlFormGroup,
+    GlButton,
+    ClipboardButton,
+  },
+  directives: {
+    GlTooltip: GlTooltipDirective,
+  },
+  props: {
+    value: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    initialVisibility: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+    showToggleVisibilityButton: {
+      type: Boolean,
+      required: false,
+      default: true,
+    },
+    showCopyButton: {
+      type: Boolean,
+      required: false,
+      default: true,
+    },
+    copyButtonTitle: {
+      type: String,
+      required: false,
+      default: __('Copy'),
+    },
+    formInputGroupProps: {
+      type: Object,
+      required: false,
+      default() {
+        return {};
+      },
+    },
+  },
+  data() {
+    return {
+      valueIsVisible: this.initialVisibility,
+    };
+  },
+  computed: {
+    toggleVisibilityLabel() {
+      return this.valueIsVisible
+        ? this.$options.i18n.toggleVisibilityLabelHide
+        : this.$options.i18n.toggleVisibilityLabelReveal;
+    },
+    toggleVisibilityIcon() {
+      return this.valueIsVisible ? 'eye-slash' : 'eye';
+    },
+    computedValueIsVisible() {
+      return !this.showToggleVisibilityButton || this.valueIsVisible;
+    },
+    displayedValue() {
+      return this.computedValueIsVisible ? this.value : '*'.repeat(this.value.length || 20);
+    },
+  },
+  methods: {
+    handleToggleVisibilityButtonClick() {
+      this.valueIsVisible = !this.valueIsVisible;
+
+      this.$emit('visibility-change', this.valueIsVisible);
+    },
+    handleCopyButtonClick() {
+      this.$emit('copy');
+    },
+    handleFormInputCopy(event) {
+      if (this.computedValueIsVisible) {
+        return;
+      }
+
+      event.clipboardData.setData('text/plain', this.value);
+      event.preventDefault();
+    },
+  },
+};
+</script>
+<template>
+  <gl-form-group v-bind="$attrs">
+    <gl-form-input-group
+      :value="displayedValue"
+      input-class="gl-font-monospace! gl-cursor-default!"
+      select-on-click
+      readonly
+      v-bind="formInputGroupProps"
+      @copy="handleFormInputCopy"
+    >
+      <template v-if="showToggleVisibilityButton || showCopyButton" #append>
+        <gl-button
+          v-if="showToggleVisibilityButton"
+          v-gl-tooltip.hover="toggleVisibilityLabel"
+          :aria-label="toggleVisibilityLabel"
+          :icon="toggleVisibilityIcon"
+          @click="handleToggleVisibilityButtonClick"
+        />
+        <clipboard-button
+          v-if="showCopyButton"
+          :text="value"
+          :title="copyButtonTitle"
+          @click="handleCopyButtonClick"
+        />
+      </template>
+    </gl-form-input-group>
+  </gl-form-group>
+</template>

spec/frontend/vue_shared/components/form/input_copy_toggle_visibility_spec.js

+import { merge } from 'lodash';
+import { GlFormInputGroup } from '@gitlab/ui';
+
+import InputCopyToggleVisibility from '~/vue_shared/components/form/input_copy_toggle_visibility.vue';
+import ClipboardButton from '~/vue_shared/components/clipboard_button.vue';
+import { createMockDirective, getBinding } from 'helpers/vue_mock_directive';
+
+import { mountExtended } from 'helpers/vue_test_utils_helper';
+
+describe('InputCopyToggleVisibility', () => {
+  let wrapper;
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  const valueProp = 'hR8x1fuJbzwu5uFKLf9e';
+
+  const createComponent = (options = {}) => {
+    wrapper = mountExtended(
+      InputCopyToggleVisibility,
+      merge({}, options, {
+        directives: {
+          GlTooltip: createMockDirective(),
+        },
+      }),
+    );
+  };
+
+  const findFormInputGroup = () => wrapper.findComponent(GlFormInputGroup);
+  const findFormInput = () => findFormInputGroup().find('input');
+  const findRevealButton = () =>
+    wrapper.findByRole('button', {
+      name: InputCopyToggleVisibility.i18n.toggleVisibilityLabelReveal,
+    });
+  const findHideButton = () =>
+    wrapper.findByRole('button', {
+      name: InputCopyToggleVisibility.i18n.toggleVisibilityLabelHide,
+    });
+  const findCopyButton = () => wrapper.findComponent(ClipboardButton);
+  const createCopyEvent = () => {
+    const event = new Event('copy', { cancelable: true });
+    Object.assign(event, { preventDefault: jest.fn(), clipboardData: { setData: jest.fn() } });
+
+    return event;
+  };
+
+  const itDoesNotModifyCopyEvent = () => {
+    it('does not modify copy event', () => {
+      const event = createCopyEvent();
+
+      findFormInput().element.dispatchEvent(event);
+
+      expect(event.clipboardData.setData).not.toHaveBeenCalled();
+      expect(event.preventDefault).not.toHaveBeenCalled();
+    });
+  };
+
+  describe('when `value` prop is passed', () => {
+    beforeEach(() => {
+      createComponent({
+        propsData: {
+          value: valueProp,
+        },
+      });
+    });
+
+    it('displays value as hidden', () => {
+      expect(findFormInputGroup().props('value')).toBe('********************');
+    });
+
+    it('saves actual value to clipboard when manually copied', () => {
+      const event = createCopyEvent();
+      findFormInput().element.dispatchEvent(event);
+
+      expect(event.clipboardData.setData).toHaveBeenCalledWith('text/plain', valueProp);
+      expect(event.preventDefault).toHaveBeenCalled();
+    });
+
+    describe('visibility toggle button', () => {
+      it('renders a reveal button', () => {
+        const revealButton = findRevealButton();
+
+        expect(revealButton.exists()).toBe(true);
+
+        const tooltip = getBinding(revealButton.element, 'gl-tooltip');
+
+        expect(tooltip.value).toBe(InputCopyToggleVisibility.i18n.toggleVisibilityLabelReveal);
+      });
+
+      describe('when clicked', () => {
+        beforeEach(async () => {
+          await findRevealButton().trigger('click');
+        });
+
+        it('displays value', () => {
+          expect(findFormInputGroup().props('value')).toBe(valueProp);
+        });
+
+        it('renders a hide button', () => {
+          const hideButton = findHideButton();
+
+          expect(hideButton.exists()).toBe(true);
+
+          const tooltip = getBinding(hideButton.element, 'gl-tooltip');
+
+          expect(tooltip.value).toBe(InputCopyToggleVisibility.i18n.toggleVisibilityLabelHide);
+        });
+
+        it('emits `visibility-change` event', () => {
+          expect(wrapper.emitted('visibility-change')[0]).toEqual([true]);
+        });
+      });
+    });
+
+    describe('copy button', () => {
+      it('renders button with correct props passed', () => {
+        expect(findCopyButton().props()).toMatchObject({
+          text: valueProp,
+          title: 'Copy',
+        });
+      });
+
+      describe('when clicked', () => {
+        beforeEach(async () => {
+          await findCopyButton().trigger('click');
+        });
+
+        it('emits `copy` event', () => {
+          expect(wrapper.emitted('copy')[0]).toEqual([]);
+        });
+      });
+    });
+  });
+
+  describe('when `value` prop is not passed', () => {
+    beforeEach(() => {
+      createComponent();
+    });
+
+    it('displays value as hidden with 20 asterisks', () => {
+      expect(findFormInputGroup().props('value')).toBe('********************');
+    });
+  });
+
+  describe('when `initialVisibility` prop is `true`', () => {
+    beforeEach(() => {
+      createComponent({
+        propsData: {
+          value: valueProp,
+          initialVisibility: true,
+        },
+      });
+    });
+
+    it('displays value', () => {
+      expect(findFormInputGroup().props('value')).toBe(valueProp);
+    });
+
+    itDoesNotModifyCopyEvent();
+  });
+
+  describe('when `showToggleVisibilityButton` is `false`', () => {
+    beforeEach(() => {
+      createComponent({
+        propsData: {
+          value: valueProp,
+          showToggleVisibilityButton: false,
+        },
+      });
+    });
+
+    it('does not render visibility toggle button', () => {
+      expect(findRevealButton().exists()).toBe(false);
+      expect(findHideButton().exists()).toBe(false);
+    });
+
+    it('displays value', () => {
+      expect(findFormInputGroup().props('value')).toBe(valueProp);
+    });
+
+    itDoesNotModifyCopyEvent();
+  });
+
+  describe('when `showCopyButton` is `false`', () => {
+    beforeEach(() => {
+      createComponent({
+        propsData: {
+          showCopyButton: false,
+        },
+      });
+    });
+
+    it('does not render copy button', () => {
+      expect(findCopyButton().exists()).toBe(false);
+    });
+  });
+
+  it('passes `formInputGroupProps` prop to `GlFormInputGroup`', () => {
+    createComponent({
+      propsData: {
+        formInputGroupProps: {
+          label: 'Foo bar',
+        },
+      },
+    });
+
+    expect(findFormInputGroup().props('label')).toBe('Foo bar');
+  });
+
+  it('passes `copyButtonTitle` prop to `ClipboardButton`', () => {
+    createComponent({
+      propsData: {
+        copyButtonTitle: 'Copy token',
+      },
+    });
+
+    expect(findCopyButton().props('title')).toBe('Copy token');
+  });
+});