Added file templates to the Web IDE

Closes #47947

4 files changed, 219 insertions, 1 deletions

diff --git a/app/assets/javascripts/ide/components/file_templates/bar.vue b/app/assets/javascripts/ide/components/file_templates/bar.vue
new file mode 100644
index 00000000000..8344b5440e9
--- /dev/null
+++ b/app/assets/javascripts/ide/components/file_templates/bar.vue
@@ -0,0 +1,90 @@
+<script>
+import { mapActions, mapGetters, mapState } from 'vuex';
+import Dropdown from './dropdown.vue';
+
+export default {
+  components: {
+    Dropdown,
+  },
+  computed: {
+    ...mapGetters(['activeFile']),
+    ...mapGetters('fileTemplates', ['templateTypes']),
+    ...mapState('fileTemplates', ['selectedTemplateType', 'updateSuccess']),
+    showTemplatesDropdown() {
+      return Object.keys(this.selectedTemplateType).length > 0;
+    },
+  },
+  watch: {
+    activeFile: {
+      handler: 'setInitialType',
+    },
+  },
+  mounted() {
+    this.setInitialType();
+  },
+  methods: {
+    ...mapActions('fileTemplates', ['setTemplateType', 'fetchTemplate']),
+    setInitialType() {
+      const type = this.templateTypes.find(t => t.name === this.activeFile.name);
+
+      if (type) {
+        this.setTemplateType(type);
+      }
+    },
+    selectTemplateType(type) {
+      this.setTemplateType(type);
+    },
+    selecteTemplate(template) {
+      this.fetchTemplate(template);
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="d-flex align-items-center ide-file-templates">
+    <strong class="mr-2">
+      {{ __('File templates') }}
+    </strong>
+    <dropdown
+      :data="templateTypes"
+      :label="selectedTemplateType.name || __('Choose a type...')"
+      class="mr-2"
+      @click="selectTemplateType"
+    />
+    <dropdown
+      v-if="showTemplatesDropdown"
+      :label="__('Choose a type...')"
+      :async="true"
+      :searchable="true"
+      :title="__('File templates')"
+      class="mr-2"
+      @click="selecteTemplate"
+    />
+    <transition name="fade">
+      <div v-show="updateSuccess">
+        <strong class="text-success mr-2">
+          {{ __('Template applied') }}
+        </strong>
+        <button
+          type="button"
+          class="btn btn-default"
+        >
+          {{ __('Undo') }}
+        </button>
+      </div>
+    </transition>
+  </div>
+</template>
+
+<style>
+.ide-file-templates {
+  padding: 8px 16px;
+  background-color: #fafafa;
+  border-bottom: 1px solid #eaeaea;
+}
+
+.ide-file-templates .dropdown {
+  min-width: 180px;
+}
+</style>
diff --git a/app/assets/javascripts/ide/components/file_templates/dropdown.vue b/app/assets/javascripts/ide/components/file_templates/dropdown.vue
new file mode 100644
index 00000000000..914022d8764
--- /dev/null
+++ b/app/assets/javascripts/ide/components/file_templates/dropdown.vue
@@ -0,0 +1,120 @@
+<script>
+import $ from 'jquery';
+import { mapActions, mapState } from 'vuex';
+import LoadingIcon from '~/vue_shared/components/loading_icon.vue';
+import DropdownButton from '~/vue_shared/components/dropdown/dropdown_button.vue';
+
+export default {
+  components: {
+    DropdownButton,
+    LoadingIcon,
+  },
+  props: {
+    data: {
+      type: Array,
+      required: false,
+      default: () => [],
+    },
+    label: {
+      type: String,
+      required: true,
+    },
+    title: {
+      type: String,
+      required: false,
+      default: null,
+    },
+    async: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+    searchable: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+  },
+  data() {
+    return {
+      search: '',
+    };
+  },
+  computed: {
+    ...mapState('fileTemplates', ['templates', 'isLoading']),
+    outputData() {
+      return (this.async ? this.templates : this.data).filter(t => {
+        if (!this.searchable) return true;
+
+        return t.name.toLowerCase().indexOf(this.search.toLowerCase()) >= 0;
+      });
+    },
+    showLoading() {
+      return this.async ? this.isLoading : false;
+    },
+  },
+  mounted() {
+    $(this.$el).on('show.bs.dropdown', this.fetchTemplatesIfAsync);
+  },
+  beforeDestroy() {
+    $(this.$el).off('show.bs.dropdown', this.fetchTemplatesIfAsync);
+  },
+  methods: {
+    ...mapActions('fileTemplates', ['fetchTemplateTypes']),
+    fetchTemplatesIfAsync() {
+      if (this.async) {
+        this.fetchTemplateTypes();
+      }
+    },
+    clickItem(item) {
+      this.$emit('click', item);
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="dropdown">
+    <dropdown-button
+      :toggle-text="label"
+    />
+    <div class="dropdown-menu">
+      <div
+        v-if="title"
+        class="dropdown-title"
+      >
+        {{ title }}
+      </div>
+      <div
+        v-if="!showLoading && searchable"
+        class="dropdown-input"
+      >
+        <input
+          v-model="search"
+          :placeholder="__('Filter...')"
+          type="search"
+          class="dropdown-input-field"
+        />
+      </div>
+      <div class="dropdown-content">
+        <loading-icon
+          v-if="showLoading"
+          size="2"
+        />
+        <ul v-else>
+          <li
+            v-for="(item, index) in outputData"
+            :key="index"
+          >
+            <button
+              type="button"
+              @click="clickItem(item)"
+            >
+              {{ item.name }}
+            </button>
+          </li>
+        </ul>
+      </div>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_editor.vue b/app/assets/javascripts/ide/components/repo_editor.vue
index f55aa843444..d3a73e84cc7 100644
--- a/app/assets/javascripts/ide/components/repo_editor.vue
+++ b/app/assets/javascripts/ide/components/repo_editor.vue
@@ -6,12 +6,14 @@ import DiffViewer from '~/vue_shared/components/diff_viewer/diff_viewer.vue';
 import { activityBarViews, viewerTypes } from '../constants';
 import Editor from '../lib/editor';
 import ExternalLink from './external_link.vue';
+import FileTemplatesBar from './file_templates/bar.vue';
 
 export default {
   components: {
     ContentViewer,
     DiffViewer,
     ExternalLink,
+    FileTemplatesBar,
   },
   props: {
     file: {
@@ -34,6 +36,7 @@ export default {
       'isCommitModeActive',
       'isReviewModeActive',
     ]),
+    ...mapGetters('fileTemplates', ['showFileTemplatesBar']),
     shouldHideEditor() {
       return this.file && this.file.binary && !this.file.content;
     },
@@ -216,7 +219,7 @@ export default {
     id="ide"
     class="blob-viewer-container blob-editor-container"
   >
-    <div class="ide-mode-tabs clearfix" >
+    <div class="ide-mode-tabs clearfix">
       <ul
         v-if="!shouldHideEditor && isEditModeActive"
         class="nav-links float-left"
@@ -249,6 +252,9 @@ export default {
         :file="file"
       />
     </div>
+    <file-templates-bar
+      v-if="showFileTemplatesBar(file.name)"
+    />
     <div
       v-show="!shouldHideEditor && file.viewMode ==='editor'"
       ref="editor"
diff --git a/app/assets/javascripts/ide/stores/index.js b/app/assets/javascripts/ide/stores/index.js
index a601dc8f5a0..3af39ce62fd 100644
--- a/app/assets/javascripts/ide/stores/index.js
+++ b/app/assets/javascripts/ide/stores/index.js
@@ -8,6 +8,7 @@ import commitModule from './modules/commit';
 import pipelines from './modules/pipelines';
 import mergeRequests from './modules/merge_requests';
 import branches from './modules/branches';
+import fileTemplates from './modules/file_templates';
 
 Vue.use(Vuex);
 
@@ -22,6 +23,7 @@ export const createStore = () =>
       pipelines,
       mergeRequests,
       branches,
+      fileTemplates,
     },
   });