Merge branch '41856-backport-stacked-progress-bar' into 'master'

Backport StackedProgressBar component from GitLab EE

Closes #41856

See merge request gitlab-org/gitlab-ce!16457

app/assets/javascripts/vue_shared/components/stacked_progress_bar.vue

+<script>
+import tooltip from '~/vue_shared/directives/tooltip';
+
+export default {
+  directives: {
+    tooltip,
+  },
+  props: {
+    cssClass: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    successLabel: {
+      type: String,
+      required: true,
+    },
+    failureLabel: {
+      type: String,
+      required: true,
+    },
+    neutralLabel: {
+      type: String,
+      required: true,
+    },
+    successCount: {
+      type: Number,
+      required: true,
+    },
+    failureCount: {
+      type: Number,
+      required: true,
+    },
+    totalCount: {
+      type: Number,
+      required: true,
+    },
+  },
+  computed: {
+    neutralCount() {
+      return this.totalCount - this.successCount - this.failureCount;
+    },
+    successPercent() {
+      return this.getPercent(this.successCount);
+    },
+    successBarStyle() {
+      return this.barStyle(this.successPercent);
+    },
+    successTooltip() {
+      return this.getTooltip(this.successLabel, this.successCount);
+    },
+    failurePercent() {
+      return this.getPercent(this.failureCount);
+    },
+    failureBarStyle() {
+      return this.barStyle(this.failurePercent);
+    },
+    failureTooltip() {
+      return this.getTooltip(this.failureLabel, this.failureCount);
+    },
+    neutralPercent() {
+      return this.getPercent(this.neutralCount);
+    },
+    neutralBarStyle() {
+      return this.barStyle(this.neutralPercent);
+    },
+    neutralTooltip() {
+      return this.getTooltip(this.neutralLabel, this.neutralCount);
+    },
+  },
+  methods: {
+    getPercent(count) {
+      return Math.ceil((count / this.totalCount) * 100);
+    },
+    barStyle(percent) {
+      return `width: ${percent}%;`;
+    },
+    getTooltip(label, count) {
+      return `${label}: ${count}`;
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+    class="stacked-progress-bar"
+    :class="cssClass"
+  >
+    <span
+      v-if="!totalCount"
+      class="status-unavailable"
+    >
+      {{ __("Not available") }}
+    </span>
+    <span
+      v-tooltip
+      v-if="successPercent"
+      class="status-green"
+      data-placement="bottom"
+      :title="successTooltip"
+      :style="successBarStyle"
+    >
+      {{ successPercent }}%
+    </span>
+    <span
+      v-tooltip
+      v-if="neutralPercent"
+      class="status-neutral"
+      data-placement="bottom"
+      :title="neutralTooltip"
+      :style="neutralBarStyle"
+    >
+      {{ neutralPercent }}%
+    </span>
+    <span
+      v-tooltip
+      v-if="failurePercent"
+      class="status-red"
+      data-placement="bottom"
+      :title="failureTooltip"
+      :style="failureBarStyle"
+    >
+      {{ failurePercent }}%
+    </span>
+  </div>
+</template>

app/assets/stylesheets/framework.scss

@@ -59,3 +59,4 @@
 @import "framework/snippets";
 @import "framework/memory_graph";
 @import "framework/responsive_tables";
+@import "framework/stacked-progress-bar";

app/assets/stylesheets/framework/stacked-progress-bar.scss

+.stacked-progress-bar {
+  display: flex;
+  height: 16px;
+  border-radius: 10px;
+  overflow: hidden;
+  background-color: $theme-gray-100;
+
+  .status-unavailable,
+  .status-green,
+  .status-neutral,
+  .status-red, {
+    height: 100%;
+    min-width: 25px;
+    padding: 0 5px;
+    font-size: $tooltip-font-size;
+    font-weight: normal;
+    color: $white-light;
+    line-height: 16px;
+
+    &:hover {
+      cursor: pointer;
+    }
+  }
+
+  .status-unavailable {
+    padding: 0 10px;
+    color: $theme-gray-700;
+  }
+
+  .status-green {
+    background-color: $green-500;
+
+    &:hover {
+      background-color: $green-600;
+    }
+  }
+
+  .status-neutral {
+    background-color: $theme-gray-200;
+    color: $gl-gray-dark;
+
+    &:hover {
+      background-color: $theme-gray-300;
+    }
+  }
+
+  .status-red {
+    background-color: $red-500;
+
+    &:hover {
+      background-color: $red-600;
+    }
+  }
+}

spec/javascripts/vue_shared/components/stacked_progress_bar_spec.js

+import Vue from 'vue';
+
+import stackedProgressBarComponent from '~/vue_shared/components/stacked_progress_bar.vue';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = (config) => {
+  const Component = Vue.extend(stackedProgressBarComponent);
+  const defaultConfig = Object.assign({}, {
+    successLabel: 'Synced',
+    failureLabel: 'Failed',
+    neutralLabel: 'Out of sync',
+    successCount: 10,
+    failureCount: 5,
+    totalCount: 20,
+  }, config);
+
+  return mountComponent(Component, defaultConfig);
+};
+
+describe('StackedProgressBarComponent', () => {
+  let vm;
+
+  beforeEach(() => {
+    vm = createComponent();
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('computed', () => {
+    describe('neutralCount', () => {
+      it('returns neutralCount based on totalCount, successCount and failureCount', () => {
+        expect(vm.neutralCount).toBe(5); // 20 - 10 - 5
+      });
+    });
+  });
+
+  describe('methods', () => {
+    describe('getPercent', () => {
+      it('returns percentage from provided count based on `totalCount`', () => {
+        expect(vm.getPercent(10)).toBe(50);
+      });
+    });
+
+    describe('barStyle', () => {
+      it('returns style string based on percentage provided', () => {
+        expect(vm.barStyle(50)).toBe('width: 50%;');
+      });
+    });
+
+    describe('getTooltip', () => {
+      it('returns label string based on label and count provided', () => {
+        expect(vm.getTooltip('Synced', 10)).toBe('Synced: 10');
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('renders container element', () => {
+      expect(vm.$el.classList.contains('stacked-progress-bar')).toBeTruthy();
+    });
+
+    it('renders empty state when count is unavailable', () => {
+      const vmX = createComponent({ totalCount: 0, successCount: 0, failureCount: 0 });
+      expect(vmX.$el.querySelectorAll('.status-unavailable').length).not.toBe(0);
+      vmX.$destroy();
+    });
+
+    it('renders bar elements when count is available', () => {
+      expect(vm.$el.querySelectorAll('.status-green').length).not.toBe(0);
+      expect(vm.$el.querySelectorAll('.status-neutral').length).not.toBe(0);
+      expect(vm.$el.querySelectorAll('.status-red').length).not.toBe(0);
+    });
+  });
+});