1 files changed, 81 insertions, 0 deletions
diff --git a/app/assets/javascripts/ci/ci_variable_list/components/ci_environments_dropdown.vue b/app/assets/javascripts/ci/ci_variable_list/components/ci_environments_dropdown.vue
new file mode 100644
index 00000000000..7387a490177
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+++ b/app/assets/javascripts/ci/ci_variable_list/components/ci_environments_dropdown.vue
@@ -0,0 +1,81 @@
+<script>
+import { GlDropdownDivider, GlDropdownItem, GlCollapsibleListbox } from '@gitlab/ui';
+import { __, sprintf } from '~/locale';
+import { convertEnvironmentScope } from '../utils';
+
+export default {
+  name: 'CiEnvironmentsDropdown',
+  components: {
+    GlDropdownDivider,
+    GlDropdownItem,
+    GlCollapsibleListbox,
+  },
+  props: {
+    environments: {
+      type: Array,
+      required: true,
+    },
+    selectedEnvironmentScope: {
+      type: String,
+      required: false,
+      default: '',
+    },
+  },
+  data() {
+    return {
+      selectedEnvironment: '',
+      searchTerm: '',
+    };
+  },
+  computed: {
+    composedCreateButtonLabel() {
+      return sprintf(__('Create wildcard: %{searchTerm}'), { searchTerm: this.searchTerm });
+    },
+    filteredEnvironments() {
+      const lowerCasedSearchTerm = this.searchTerm.toLowerCase();
+
+      return this.environments
+        .filter((environment) => {
+          return environment.toLowerCase().includes(lowerCasedSearchTerm);
+        })
+        .map((environment) => ({
+          value: environment,
+          text: environment,
+        }));
+    },
+    shouldRenderCreateButton() {
+      return this.searchTerm && !this.environments.includes(this.searchTerm);
+    },
+    environmentScopeLabel() {
+      return convertEnvironmentScope(this.selectedEnvironmentScope);
+    },
+  },
+  methods: {
+    selectEnvironment(selected) {
+      this.$emit('select-environment', selected);
+      this.selectedEnvironment = selected;
+    },
+    createEnvironmentScope() {
+      this.$emit('create-environment-scope', this.searchTerm);
+      this.selectEnvironment(this.searchTerm);
+    },
+  },
+};
+</script>
+<template>
+  <gl-collapsible-listbox
+    v-model="selectedEnvironment"
+    searchable
+    :items="filteredEnvironments"
+    :toggle-text="environmentScopeLabel"
+    @search="searchTerm = $event.trim()"
+    @select="selectEnvironment"
+  >
+    <template v-if="shouldRenderCreateButton" #footer>
+      <gl-dropdown-divider />
+      <gl-dropdown-item data-testid="create-wildcard-button" @click="createEnvironmentScope">
+        {{ composedCreateButtonLabel }}
+      </gl-dropdown-item>
+    </template>
+  </gl-collapsible-listbox>
+</template>