Merge branch 'new-mr-repo-editor' into 'master'

Add create merge checkbox.

Closes #38626

See merge request gitlab-org/gitlab-ce!14665

11 files changed, 260 insertions, 68 deletions

diff --git a/app/assets/javascripts/api.js b/app/assets/javascripts/api.js
index 38d1effc77c..242b3e2b990 100644
--- a/app/assets/javascripts/api.js
+++ b/app/assets/javascripts/api.js
@@ -15,6 +15,7 @@ const Api = {
   issuableTemplatePath: '/:namespace_path/:project_path/templates/:type/:key',
   usersPath: '/api/:version/users.json',
   commitPath: '/api/:version/projects/:id/repository/commits',
+  branchSinglePath: '/api/:version/projects/:id/repository/branches/:branch',
 
   group(groupId, callback) {
     const url = Api.buildUrl(Api.groupPath)
@@ -123,6 +124,19 @@ const Api = {
     });
   },
 
+  branchSingle(id, branch) {
+    const url = Api.buildUrl(Api.branchSinglePath)
+      .replace(':id', id)
+      .replace(':branch', branch);
+
+    return this.wrapAjaxCall({
+      url,
+      type: 'GET',
+      contentType: 'application/json; charset=utf-8',
+      dataType: 'json',
+    });
+  },
+
   // Return text for a specific license
   licenseText(key, data, callback) {
     const url = Api.buildUrl(Api.licensePath)
diff --git a/app/assets/javascripts/lib/utils/url_utility.js b/app/assets/javascripts/lib/utils/url_utility.js
index 78c7a094127..1aa63216baf 100644
--- a/app/assets/javascripts/lib/utils/url_utility.js
+++ b/app/assets/javascripts/lib/utils/url_utility.js
@@ -85,7 +85,7 @@ w.gl.utils.getLocationHash = function(url) {
   return hashIndex === -1 ? null : url.substring(hashIndex + 1);
 };
 
-w.gl.utils.refreshCurrentPage = () => gl.utils.visitUrl(document.location.href);
+w.gl.utils.refreshCurrentPage = () => gl.utils.visitUrl(window.location.href);
 
 // eslint-disable-next-line import/prefer-default-export
 export function visitUrl(url, external = false) {
@@ -96,7 +96,7 @@ export function visitUrl(url, external = false) {
     otherWindow.opener = null;
     otherWindow.location = url;
   } else {
-    document.location.href = url;
+    window.location.href = url;
   }
 }
 
diff --git a/app/assets/javascripts/repo/components/repo_commit_section.vue b/app/assets/javascripts/repo/components/repo_commit_section.vue
index 6d8cc964eb2..c0dc4c8cd8b 100644
--- a/app/assets/javascripts/repo/components/repo_commit_section.vue
+++ b/app/assets/javascripts/repo/components/repo_commit_section.vue
@@ -3,11 +3,17 @@ import Flash from '../../flash';
 import Store from '../stores/repo_store';
 import RepoMixin from '../mixins/repo_mixin';
 import Service from '../services/repo_service';
+import PopupDialog from '../../vue_shared/components/popup_dialog.vue';
+import { visitUrl } from '../../lib/utils/url_utility';
 
 export default {
+  mixins: [RepoMixin],
+
   data: () => Store,
 
-  mixins: [RepoMixin],
+  components: {
+    PopupDialog,
+  },
 
   computed: {
     showCommitable() {
@@ -28,7 +34,16 @@ export default {
   },
 
   methods: {
-    makeCommit() {
+    commitToNewBranch(status) {
+      if (status) {
+        this.showNewBranchDialog = false;
+        this.tryCommit(null, true, true);
+      } else {
+        // reset the state
+      }
+    },
+
+    makeCommit(newBranch) {
       // see https://docs.gitlab.com/ce/api/commits.html#create-a-commit-with-multiple-files-and-actions
       const commitMessage = this.commitMessage;
       const actions = this.changedFiles.map(f => ({
@@ -36,19 +51,63 @@ export default {
         file_path: f.path,
         content: f.newContent,
       }));
+      const branch = newBranch ? `${this.currentBranch}-${this.currentShortHash}` : this.currentBranch;
       const payload = {
-        branch: Store.currentBranch,
+        branch,
         commit_message: commitMessage,
         actions,
       };
-      Store.submitCommitsLoading = true;
+      if (newBranch) {
+        payload.start_branch = this.currentBranch;
+      }
+      this.submitCommitsLoading = true;
       Service.commitFiles(payload)
-        .then(this.resetCommitState)
-        .catch(() => Flash('An error occurred while committing your changes'));
+        .then(() => {
+          this.resetCommitState();
+          if (this.startNewMR) {
+            this.redirectToNewMr(branch);
+          } else {
+            this.redirectToBranch(branch);
+          }
+        })
+        .catch(() => {
+          Flash('An error occurred while committing your changes');
+        });
+    },
+
+    tryCommit(e, skipBranchCheck = false, newBranch = false) {
+      if (skipBranchCheck) {
+        this.makeCommit(newBranch);
+      } else {
+        Store.setBranchHash()
+          .then(() => {
+            if (Store.branchChanged) {
+              Store.showNewBranchDialog = true;
+              return;
+            }
+            this.makeCommit(newBranch);
+          })
+          .catch(() => {
+            Flash('An error occurred while committing your changes');
+          });
+      }
+    },
+
+    redirectToNewMr(branch) {
+      visitUrl(this.newMrTemplateUrl.replace('{{source_branch}}', branch));
+    },
+
+    redirectToBranch(branch) {
+      visitUrl(this.customBranchURL.replace('{{branch}}', branch));
     },
 
     resetCommitState() {
       this.submitCommitsLoading = false;
+      this.openedFiles = this.openedFiles.map((file) => {
+        const f = file;
+        f.changed = false;
+        return f;
+      });
       this.changedFiles = [];
       this.commitMessage = '';
       this.editMode = false;
@@ -62,9 +121,17 @@ export default {
 <div
   v-if="showCommitable"
   id="commit-area">
+  <popup-dialog
+    v-if="showNewBranchDialog"
+    :primary-button-label="__('Create new branch')"
+    kind="primary"
+    :title="__('Branch has changed')"
+    :text="__('This branch has changed since you started editing. Would you like to create a new branch?')"
+    @submit="commitToNewBranch"
+  />
   <form
     class="form-horizontal"
-    @submit.prevent="makeCommit">
+    @submit.prevent="tryCommit">
     <fieldset>
       <div class="form-group">
         <label class="col-md-4 control-label staged-files">
@@ -117,7 +184,7 @@ export default {
           class="btn btn-success">
           <i
             v-if="submitCommitsLoading"
-            class="fa fa-spinner fa-spin"
+            class="js-commit-loading-icon fa fa-spinner fa-spin"
             aria-hidden="true"
             aria-label="loading">
           </i>
@@ -126,6 +193,14 @@ export default {
           </span>
         </button>
       </div>
+      <div class="col-md-offset-4 col-md-6">
+        <div class="checkbox">
+          <label>
+            <input type="checkbox" v-model="startNewMR">
+            <span>Start a <strong>new merge request</strong> with these changes</span>
+          </label>
+        </div>
+      </div>
     </fieldset>
   </form>
 </div>
diff --git a/app/assets/javascripts/repo/index.js b/app/assets/javascripts/repo/index.js
index 7d0123e3d3a..1a09f411b22 100644
--- a/app/assets/javascripts/repo/index.js
+++ b/app/assets/javascripts/repo/index.js
@@ -31,8 +31,11 @@ function setInitialStore(data) {
   Store.projectUrl = data.projectUrl;
   Store.canCommit = data.canCommit;
   Store.onTopOfBranch = data.onTopOfBranch;
+  Store.newMrTemplateUrl = decodeURIComponent(data.newMrTemplateUrl);
+  Store.customBranchURL = decodeURIComponent(data.blobUrl);
   Store.currentBranch = $('button.dropdown-menu-toggle').attr('data-ref');
   Store.checkIsCommitable();
+  Store.setBranchHash();
 }
 
 function initRepo(el) {
diff --git a/app/assets/javascripts/repo/services/repo_service.js b/app/assets/javascripts/repo/services/repo_service.js
index 830685f7e6e..d68d71a4629 100644
--- a/app/assets/javascripts/repo/services/repo_service.js
+++ b/app/assets/javascripts/repo/services/repo_service.js
@@ -64,6 +64,10 @@ const RepoService = {
     return urlArray.join('/');
   },
 
+  getBranch() {
+    return Api.branchSingle(Store.projectId, Store.currentBranch);
+  },
+
   commitFiles(payload) {
     return Api.commitMultiple(Store.projectId, payload)
       .then(this.commitFlash);
diff --git a/app/assets/javascripts/repo/stores/repo_store.js b/app/assets/javascripts/repo/stores/repo_store.js
index c633f538c1b..f8d29af7ffe 100644
--- a/app/assets/javascripts/repo/stores/repo_store.js
+++ b/app/assets/javascripts/repo/stores/repo_store.js
@@ -23,6 +23,7 @@ const RepoStore = {
     title: '',
     status: false,
   },
+  showNewBranchDialog: false,
   activeFile: Helper.getDefaultActiveFile(),
   activeFileIndex: 0,
   activeLine: -1,
@@ -31,6 +32,12 @@ const RepoStore = {
   isCommitable: false,
   binary: false,
   currentBranch: '',
+  startNewMR: false,
+  currentHash: '',
+  currentShortHash: '',
+  customBranchURL: '',
+  newMrTemplateUrl: '',
+  branchChanged: false,
   commitMessage: '',
   binaryTypes: {
     png: false,
@@ -49,6 +56,17 @@ const RepoStore = {
     });
   },
 
+  setBranchHash() {
+    return Service.getBranch()
+      .then((data) => {
+        if (RepoStore.currentHash !== '' && data.commit.id !== RepoStore.currentHash) {
+          RepoStore.branchChanged = true;
+        }
+        RepoStore.currentHash = data.commit.id;
+        RepoStore.currentShortHash = data.commit.short_id;
+      });
+  },
+
   // mutations
   checkIsCommitable() {
     RepoStore.isCommitable = RepoStore.onTopOfBranch && RepoStore.canCommit;
diff --git a/app/assets/javascripts/vue_shared/components/popup_dialog.vue b/app/assets/javascripts/vue_shared/components/popup_dialog.vue
index 9279b50cd55..7d8c5936b7d 100644
--- a/app/assets/javascripts/vue_shared/components/popup_dialog.vue
+++ b/app/assets/javascripts/vue_shared/components/popup_dialog.vue
@@ -16,6 +16,11 @@ export default {
       required: false,
       default: 'primary',
     },
+    closeKind: {
+      type: String,
+      required: false,
+      default: 'default',
+    },
     closeButtonLabel: {
       type: String,
       required: false,
@@ -33,6 +38,11 @@ export default {
         [`btn-${this.kind}`]: true,
       };
     },
+    btnCancelKindClass() {
+      return {
+        [`btn-${this.closeKind}`]: true,
+      };
+    },
   },
 
   methods: {
@@ -70,7 +80,8 @@ export default {
       <div class="modal-footer">
         <button
           type="button"
-          class="btn btn-default"
+          class="btn"
+          :class="btnCancelKindClass"
           @click="emitSubmit(false)">
             {{closeButtonLabel}}
         </button>
diff --git a/app/views/shared/repo/_repo.html.haml b/app/views/shared/repo/_repo.html.haml
index 87fa2007d16..919f19f2c23 100644
--- a/app/views/shared/repo/_repo.html.haml
+++ b/app/views/shared/repo/_repo.html.haml
@@ -3,5 +3,7 @@
                refs_url: refs_project_path(project, format: :json),
                project_url: project_path(project),
                project_id: project.id,
+               blob_url: namespace_project_blob_path(project.namespace, project, '{{branch}}'),
+               new_mr_template_url: namespace_project_new_merge_request_path(project.namespace, project, merge_request: { source_branch: '{{source_branch}}' }),
                can_commit: (!!can_push_branch?(project, @ref)).to_s,
                on_top_of_branch: (!!on_top_of_branch?(project, @ref)).to_s } }
diff --git a/changelogs/unreleased/new-mr-repo-editor.yml b/changelogs/unreleased/new-mr-repo-editor.yml
new file mode 100644
index 00000000000..a6c15ee30a9
--- /dev/null
+++ b/changelogs/unreleased/new-mr-repo-editor.yml
@@ -0,0 +1,5 @@
+---
+title: 'Repo Editor: Add option to start a new MR directly from comit section'
+merge_request: 14665
+author:
+type: added
diff --git a/spec/javascripts/helpers/set_timeout_promise_helper.js b/spec/javascripts/helpers/set_timeout_promise_helper.js
new file mode 100644
index 00000000000..1478073413c
--- /dev/null
+++ b/spec/javascripts/helpers/set_timeout_promise_helper.js
@@ -0,0 +1,3 @@
+export default (time = 0) => new Promise((resolve) => {
+  setTimeout(resolve, time);
+});
diff --git a/spec/javascripts/repo/components/repo_commit_section_spec.js b/spec/javascripts/repo/components/repo_commit_section_spec.js
index e604dcc152d..0635de4b30b 100644
--- a/spec/javascripts/repo/components/repo_commit_section_spec.js
+++ b/spec/javascripts/repo/components/repo_commit_section_spec.js
@@ -2,29 +2,13 @@ import Vue from 'vue';
 import repoCommitSection from '~/repo/components/repo_commit_section.vue';
 import RepoStore from '~/repo/stores/repo_store';
 import RepoService from '~/repo/services/repo_service';
+import getSetTimeoutPromise from '../../helpers/set_timeout_promise_helper';
 
 describe('RepoCommitSection', () => {
   const branch = 'master';
   const projectUrl = 'projectUrl';
-  const changedFiles = [{
-    id: 0,
-    changed: true,
-    url: `/namespace/${projectUrl}/blob/${branch}/dir/file0.ext`,
-    path: 'dir/file0.ext',
-    newContent: 'a',
-  }, {
-    id: 1,
-    changed: true,
-    url: `/namespace/${projectUrl}/blob/${branch}/dir/file1.ext`,
-    path: 'dir/file1.ext',
-    newContent: 'b',
-  }];
-  const openedFiles = changedFiles.concat([{
-    id: 2,
-    url: `/namespace/${projectUrl}/blob/${branch}/dir/file2.ext`,
-    path: 'dir/file2.ext',
-    changed: false,
-  }]);
+  let changedFiles;
+  let openedFiles;
 
   RepoStore.projectUrl = projectUrl;
 
@@ -34,6 +18,29 @@ describe('RepoCommitSection', () => {
     return new RepoCommitSection().$mount(el);
   }
 
+  beforeEach(() => {
+    // Create a copy for each test because these can get modified directly
+    changedFiles = [{
+      id: 0,
+      changed: true,
+      url: `/namespace/${projectUrl}/blob/${branch}/dir/file0.ext`,
+      path: 'dir/file0.ext',
+      newContent: 'a',
+    }, {
+      id: 1,
+      changed: true,
+      url: `/namespace/${projectUrl}/blob/${branch}/dir/file1.ext`,
+      path: 'dir/file1.ext',
+      newContent: 'b',
+    }];
+    openedFiles = changedFiles.concat([{
+      id: 2,
+      url: `/namespace/${projectUrl}/blob/${branch}/dir/file2.ext`,
+      path: 'dir/file2.ext',
+      changed: false,
+    }]);
+  });
+
   it('renders a commit section', () => {
     RepoStore.isCommitable = true;
     RepoStore.currentBranch = branch;
@@ -85,55 +92,104 @@ describe('RepoCommitSection', () => {
     expect(vm.$el.innerHTML).toBeFalsy();
   });
 
-  it('shows commit submit and summary if commitMessage and spinner if submitCommitsLoading', (done) => {
+  describe('when submitting', () => {
+    let el;
+    let vm;
     const projectId = 'projectId';
     const commitMessage = 'commitMessage';
-    RepoStore.isCommitable = true;
-    RepoStore.currentBranch = branch;
-    RepoStore.targetBranch = branch;
-    RepoStore.openedFiles = openedFiles;
-    RepoStore.projectId = projectId;
 
-    // We need to append to body to get form `submit` events working
-    // Otherwise we run into, "Form submission canceled because the form is not connected"
-    // See https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#form-submission-algorithm
-    const el = document.createElement('div');
-    document.body.appendChild(el);
-
-    const vm = createComponent(el);
-    const commitMessageEl = vm.$el.querySelector('#commit-message');
-    const submitCommit = vm.$refs.submitCommit;
+    beforeEach((done) => {
+      RepoStore.isCommitable = true;
+      RepoStore.currentBranch = branch;
+      RepoStore.targetBranch = branch;
+      RepoStore.openedFiles = openedFiles;
+      RepoStore.projectId = projectId;
+
+      // We need to append to body to get form `submit` events working
+      // Otherwise we run into, "Form submission canceled because the form is not connected"
+      // See https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#form-submission-algorithm
+      el = document.createElement('div');
+      document.body.appendChild(el);
+
+      vm = createComponent(el);
+      vm.commitMessage = commitMessage;
+
+      spyOn(vm, 'tryCommit').and.callThrough();
+      spyOn(vm, 'redirectToNewMr').and.stub();
+      spyOn(vm, 'redirectToBranch').and.stub();
+      spyOn(RepoService, 'commitFiles').and.returnValue(Promise.resolve());
+      spyOn(RepoService, 'getBranch').and.returnValue(Promise.resolve({
+        commit: {
+          id: 1,
+          short_id: 1,
+        },
+      }));
+
+      // Wait for the vm data to be in place
+      Vue.nextTick(() => {
+        done();
+      });
+    });
 
-    vm.commitMessage = commitMessage;
+    afterEach(() => {
+      vm.$destroy();
+      el.remove();
+    });
 
-    Vue.nextTick(() => {
+    it('shows commit message', () => {
+      const commitMessageEl = vm.$el.querySelector('#commit-message');
       expect(commitMessageEl.value).toBe(commitMessage);
-      expect(submitCommit.disabled).toBeFalsy();
+    });
 
-      spyOn(vm, 'makeCommit').and.callThrough();
-      spyOn(RepoService, 'commitFiles').and.callFake(() => Promise.resolve());
+    it('allows you to submit', () => {
+      const submitCommit = vm.$refs.submitCommit;
+      expect(submitCommit.disabled).toBeFalsy();
+    });
 
+    it('shows commit submit and summary if commitMessage and spinner if submitCommitsLoading', (done) => {
+      const submitCommit = vm.$refs.submitCommit;
       submitCommit.click();
 
-      Vue.nextTick(() => {
-        expect(vm.makeCommit).toHaveBeenCalled();
-        expect(submitCommit.querySelector('.fa-spinner.fa-spin')).toBeTruthy();
-
-        const args = RepoService.commitFiles.calls.allArgs()[0];
-        const { commit_message, actions, branch: payloadBranch } = args[0];
-
-        expect(commit_message).toBe(commitMessage);
-        expect(actions.length).toEqual(2);
-        expect(payloadBranch).toEqual(branch);
-        expect(actions[0].action).toEqual('update');
-        expect(actions[1].action).toEqual('update');
-        expect(actions[0].content).toEqual(openedFiles[0].newContent);
-        expect(actions[1].content).toEqual(openedFiles[1].newContent);
-        expect(actions[0].file_path).toEqual(openedFiles[0].path);
-        expect(actions[1].file_path).toEqual(openedFiles[1].path);
+      // Wait for the branch check to finish
+      getSetTimeoutPromise()
+        .then(() => Vue.nextTick())
+        .then(() => {
+          expect(vm.tryCommit).toHaveBeenCalled();
+          expect(submitCommit.querySelector('.js-commit-loading-icon')).toBeTruthy();
+          expect(vm.redirectToBranch).toHaveBeenCalled();
+
+          const args = RepoService.commitFiles.calls.allArgs()[0];
+          const { commit_message, actions, branch: payloadBranch } = args[0];
+
+          expect(commit_message).toBe(commitMessage);
+          expect(actions.length).toEqual(2);
+          expect(payloadBranch).toEqual(branch);
+          expect(actions[0].action).toEqual('update');
+          expect(actions[1].action).toEqual('update');
+          expect(actions[0].content).toEqual(openedFiles[0].newContent);
+          expect(actions[1].content).toEqual(openedFiles[1].newContent);
+          expect(actions[0].file_path).toEqual(openedFiles[0].path);
+          expect(actions[1].file_path).toEqual(openedFiles[1].path);
+        })
+        .then(done)
+        .catch(done.fail);
+    });
 
-        done();
-      });
+    it('redirects to MR creation page if start new MR checkbox checked', (done) => {
+      vm.startNewMR = true;
+
+      Vue.nextTick()
+        .then(() => {
+          const submitCommit = vm.$refs.submitCommit;
+          submitCommit.click();
+        })
+        // Wait for the branch check to finish
+        .then(() => getSetTimeoutPromise())
+        .then(() => {
+          expect(vm.redirectToNewMr).toHaveBeenCalled();
+        })
+        .then(done)
+        .catch(done.fail);
     });
   });
 
@@ -143,6 +199,7 @@ describe('RepoCommitSection', () => {
         const vm = {
           submitCommitsLoading: true,
           changedFiles: new Array(10),
+          openedFiles: new Array(3),
           commitMessage: 'commitMessage',
           editMode: true,
         };