Improve environments performance

2 files changed, 118 insertions, 0 deletions

diff --git a/app/assets/javascripts/vue_shared/components/navigation_tabs.vue b/app/assets/javascripts/vue_shared/components/navigation_tabs.vue
new file mode 100644
index 00000000000..a2ddd565170
--- /dev/null
+++ b/app/assets/javascripts/vue_shared/components/navigation_tabs.vue
@@ -0,0 +1,76 @@
+<script>
+  /**
+   * Given an array of tabs, renders non linked bootstrap tabs.
+   * When a tab is clicked it will trigger an event and provide the clicked scope.
+   *
+   * This component is used in apps that handle the API call.
+   * If you only need to change the URL this component should not be used.
+   *
+   * @example
+   * <navigation-tabs
+   *   :tabs="[
+   *   {
+   *      name: String,
+   *      scope: String,
+   *      count: Number || Undefined,
+   *      isActive: Boolean,
+   *    },
+   *   ]"
+   *   @onChangeTab="onChangeTab"
+   *   />
+   */
+  export default {
+    name: 'NavigationTabs',
+    props: {
+      tabs: {
+        type: Array,
+        required: true,
+      },
+      scope: {
+        type: String,
+        required: false,
+        default: '',
+      },
+    },
+    mounted() {
+      $(document).trigger('init.scrolling-tabs');
+    },
+    methods: {
+      shouldRenderBadge(count) {
+        // 0 is valid in a badge, but evaluates to false, we need to check for undefined
+        return count !== undefined;
+      },
+
+      onTabClick(tab) {
+        this.$emit('onChangeTab', tab.scope);
+      },
+    },
+};
+</script>
+<template>
+  <ul class="nav-links scrolling-tabs">
+    <li
+      v-for="(tab, i) in tabs"
+      :key="i"
+      :class="{
+        active: tab.isActive,
+      }"
+      >
+      <a
+        role="button"
+        @click="onTabClick(tab)"
+        :class="`js-${scope}-tab-${tab.scope}`"
+        >
+        {{ tab.name }}
+
+        <span
+          v-if="shouldRenderBadge(tab.count)"
+          class="badge"
+          >
+          {{tab.count}}
+        </span>
+
+      </a>
+    </li>
+  </ul>
+</template>
diff --git a/app/assets/javascripts/vue_shared/mixins/ci_pagination_api_mixin.js b/app/assets/javascripts/vue_shared/mixins/ci_pagination_api_mixin.js
new file mode 100644
index 00000000000..f94cc670edf
--- /dev/null
+++ b/app/assets/javascripts/vue_shared/mixins/ci_pagination_api_mixin.js
@@ -0,0 +1,42 @@
+/**
+ * API callbacks for pagination and tabs
+ * shared between Pipelines and Environments table.
+ *
+ * Components need to have `scope`, `page` and `requestData`
+ */
+import {
+  historyPushState,
+  buildUrlWithCurrentLocation,
+} from '../../lib/utils/common_utils';
+
+export default {
+  methods: {
+    onChangeTab(scope) {
+      this.updateContent({ scope, page: '1' });
+    },
+
+    onChangePage(page) {
+      /* URLS parameters are strings, we need to parse to match types */
+      this.updateContent({ scope: this.scope, page: Number(page).toString() });
+    },
+
+    updateInternalState(parameters) {
+      // stop polling
+      this.poll.stop();
+
+      const queryString = Object.keys(parameters).map((parameter) => {
+        const value = parameters[parameter];
+        // update internal state for UI
+        this[parameter] = value;
+        return `${parameter}=${encodeURIComponent(value)}`;
+      }).join('&');
+
+      // update polling parameters
+      this.requestData = parameters;
+
+      historyPushState(buildUrlWithCurrentLocation(`?${queryString}`));
+
+      this.isLoading = true;
+    },
+  },
+};