feat(component): add ProgressIndicator

Closes #24

README.md

@@ -39,6 +39,9 @@ Currently, the following components are supported:
   - NotificationIcon
   - NotificationTextDetails
 - OrderedList
+- ProgressIndicator
+  - ProgressIndicatorSkeleton
+  - ProgressStep
 - RadioButton
   - RadioButtonSkeleton
 - Search

src/components/ProgressIndicator/ProgressIndicator.Skeleton.svelte

@@ -0,0 +1,24 @@
+<script>
+  let className = undefined;
+  export { className as class };
+  export let vertical = false;
+  export let style = undefined;
+
+  import { cx } from '../../lib';
+
+  const _class = cx('--progress', vertical && '--progress--vertical', '--skeleton', className);
+</script>
+
+<ul on:click on:mouseover on:mouseenter on:mouseleave class={_class} {style}>
+  {#each [0, 1, 2, 3] as item, i (item)}
+    <li class={cx('--progress-step', '--progress-step--incomplete')}>
+      <div class={cx('--progress-step-button', '--progress-step-button--unclickable')}>
+        <svg>
+          <path d="M 7, 7 m -7, 0 a 7,7 0 1,0 14,0 a 7,7 0 1,0 -14,0" />
+        </svg>
+        <p class={cx('--progress-label')} />
+        <span class={cx('--progress-line')} />
+      </div>
+    </li>
+  {/each}
+</ul>

src/components/ProgressIndicator/ProgressIndicator.Story.svelte

@@ -0,0 +1,55 @@
+<script>
+  export let story = undefined;
+
+  import Layout from '../../internal/ui/Layout.svelte';
+  import ProgressIndicator from './ProgressIndicator.svelte';
+  import ProgressStep from './ProgressStep.svelte';
+  import ProgressIndicatorSkeleton from './ProgressIndicator.Skeleton.svelte';
+</script>
+
+<Layout>
+  <div>
+    {#if story === 'skeleton'}
+      <ProgressIndicatorSkeleton {...$$props} />
+    {:else if story === 'interactive'}
+      <ProgressIndicator {...$$props}>
+        <ProgressStep description="Step 1: Register a onChange event" let:props>
+          <div {...props}>Click me</div>
+        </ProgressStep>
+        <ProgressStep
+          label="Really long label"
+          description="The progress indicator will listen for clicks on the steps" />
+        <ProgressStep
+          label="Tooltip and really long label"
+          description="The progress indicator will listen for clicks on the steps" />
+      </ProgressIndicator>
+    {:else}
+      <ProgressIndicator {...$$props}>
+        <ProgressStep
+          label="First step"
+          description="Step 1: Getting started with Carbon Design System"
+          secondaryLabel="Optional label" />
+        <ProgressStep
+          label="Second step with tooltip"
+          description="Step 2: Getting started with Carbon Design System"
+          secondaryLabel="Optional label">
+          Label
+        </ProgressStep>
+        <ProgressStep
+          label="Third step with tooltip"
+          description="Step 3: Getting started with Carbon Design System">
+          Label
+        </ProgressStep>
+        <ProgressStep
+          label="Fourth step"
+          description="Step 4: Getting started with Carbon Design System"
+          invalid
+          secondaryLabel="Example invalid step" />
+        <ProgressStep
+          label="Fifth step"
+          description="Step 5: Getting started with Carbon Design System"
+          disabled />
+      </ProgressIndicator>
+    {/if}
+  </div>
+</Layout>

src/components/ProgressIndicator/ProgressIndicator.stories.js

@@ -0,0 +1,29 @@
+import { withKnobs, boolean, text, number } from '@storybook/addon-knobs';
+import Component from './ProgressIndicator.Story.svelte';
+
+export default { title: 'ProgressIndicator', decorators: [withKnobs] };
+
+export const Default = () => ({
+  Component,
+  props: {
+    currentIndex: number('Current progress (currentIndex)', 1),
+    vertical: boolean('Vertical orientation (vertical)', false)
+  }
+});
+
+export const Interactive = () => ({
+  Component,
+  props: {
+    story: 'interactive',
+    currentIndex: number('Current progress (currentIndex)', 1),
+    vertical: boolean('Vertical orientation (vertical)', false)
+  }
+});
+
+export const Skeleton = () => ({
+  Component,
+  props: {
+    story: 'skeleton',
+    vertical: boolean('Vertical orientation (vertical)', false)
+  }
+});

src/components/ProgressIndicator/ProgressIndicator.svelte

@@ -0,0 +1,39 @@
+<script>
+  let className = undefined;
+  export { className as class };
+  export let currentIndex = 0;
+  export let vertical = false;
+  export let style = undefined;
+
+  import { createEventDispatcher, setContext } from 'svelte';
+  import { writable, derived } from 'svelte/store';
+  import { cx } from '../../lib';
+
+  const dispatch = createEventDispatcher();
+  const _class = cx('--progress', vertical && '--progress--vertical', className);
+  let steps = writable([]);
+  let stepsById = derived(steps, $steps => $steps.reduce((a, c) => ({ ...a, [c.id]: c }), {}));
+
+  setContext('ProgressIndicator', {
+    steps,
+    stepsById,
+    add: step => {
+      steps.update(_ => [
+        ..._,
+        {
+          ...step,
+          index: _.length,
+          current: _.length === currentIndex,
+          complete: _.length <= currentIndex
+        }
+      ]);
+    },
+    change: index => {
+      dispatch('change', index);
+    }
+  });
+</script>
+
+<ul on:click on:mouseover on:mouseenter on:mouseleave class={_class} {style}>
+  <slot />
+</ul>

src/components/ProgressIndicator/ProgressStep.svelte

@@ -0,0 +1,82 @@
+<script>
+  let className = undefined;
+  export { className as class };
+  export let label = '';
+  export let current = false;
+  export let complete = false;
+  export let description = '';
+  export let invalid = false;
+  export let secondaryLabel = '';
+  export let disabled = false;
+  export let style = undefined;
+
+  import { createEventDispatcher, getContext } from 'svelte';
+  import Warning16 from 'carbon-icons-svelte/lib/Warning16';
+  import CheckmarkOutline16 from 'carbon-icons-svelte/lib/CheckmarkOutline16';
+  import { cx } from '../../lib';
+
+  const dispatch = createEventDispatcher();
+  const id = Math.random();
+  const { stepsById, add, change } = getContext('ProgressIndicator');
+
+  add({ id, disabled });
+
+  $: step = $stepsById[id];
+  $: {
+    current = step.current;
+    complete = step.complete;
+  }
+  $: _class = cx(
+    '--progress-step',
+    current && '--progress-step--current',
+    complete && '--progress-step--complete',
+    !complete && !current && '--progress-step--incomplete',
+    disabled && '--progress-step--disabled',
+    className
+  );
+  $: _buttonClass = cx('--progress-step-button', current && '--progress-step-button--unclickable');
+</script>
+
+<li aria-disabled={disabled} class={_class} {style}>
+  <div
+    role="button"
+    class={_buttonClass}
+    tabindex={current ? '-1' : '0'}
+    on:click={() => {
+      change(step.index);
+    }}
+    on:mouseover
+    on:mouseenter
+    on:mouseleave
+    on:keydown
+    on:keydown={event => {
+      if (event.key === ' ' || event.key === 'Enter') {
+        change(step.index);
+      }
+    }}>
+    {#if invalid}
+      <Warning16 class={cx('--progress__warning')} />
+    {:else if current}
+      <svg>
+        <path d="M 7, 7 m -7, 0 a 7,7 0 1,0 14,0 a 7,7 0 1,0 -14,0" />
+        <title>{description}</title>
+      </svg>
+    {:else if complete}
+      <CheckmarkOutline16 title={description} />
+    {:else}
+      <svg>
+        <title>{description}</title>
+        <path
+          d="M8 1C4.1 1 1 4.1 1 8s3.1 7 7 7 7-3.1 7-7-3.1-7-7-7zm0 13c-3.3 0-6-2.7-6-6s2.7-6 6-6 6
+          2.7 6 6-2.7 6-6 6z" />
+      </svg>
+    {/if}
+    <slot props={{ class: cx('--progress-label') }}>
+      <p class={cx('--progress-label')}>{label}</p>
+    </slot>
+    {#if secondaryLabel}
+      <p class={cx('--progress-optional')}>{secondaryLabel}</p>
+    {/if}
+    <span class={cx('--progress-line')} />
+  </div>
+</li>

src/components/ProgressIndicator/index.js

@@ -0,0 +1,5 @@
+import ProgressIndicator from './ProgressIndicator.svelte';
+
+export default ProgressIndicator;
+export { default as ProgressIndicatorSkeleton } from './ProgressIndicator.Skeleton.svelte';
+export { default as ProgressStep } from './ProgressStep.svelte';

src/index.js

@@ -20,6 +20,10 @@ import {
   NotificationTextDetails
 } from './components/Notification';
 import OrderedList from './components/OrderedList';
+import ProgressIndicator, {
+  ProgressIndicatorSkeleton,
+  ProgressStep
+} from './components/ProgressIndicator';
 import RadioButton, { RadioButtonSkeleton } from './components/RadioButton';
 import Search, { SearchSkeleton } from './components/Search';
 import SkeletonPlaceholder from './components/SkeletonPlaceholder';
@@ -71,6 +75,9 @@ export {
   NotificationTextDetails,
   OrderedList,
   PasswordInput,
+  ProgressIndicator,
+  ProgressIndicatorSkeleton,
+  ProgressStep,
   RadioButton,
   RadioButtonSkeleton,
   Search,