Resolve "Decouple multi-file editor from file list"

52 files changed, 3456 insertions, 0 deletions

diff --git a/app/assets/javascripts/ide/components/commit_sidebar/list.vue b/app/assets/javascripts/ide/components/commit_sidebar/list.vue
new file mode 100644
index 00000000000..704dff981df
--- /dev/null
+++ b/app/assets/javascripts/ide/components/commit_sidebar/list.vue
@@ -0,0 +1,66 @@
+<script>
+  import { mapState } from 'vuex';
+  import icon from '../../../vue_shared/components/icon.vue';
+  import listItem from './list_item.vue';
+  import listCollapsed from './list_collapsed.vue';
+
+  export default {
+    components: {
+      icon,
+      listItem,
+      listCollapsed,
+    },
+    props: {
+      title: {
+        type: String,
+        required: true,
+      },
+      fileList: {
+        type: Array,
+        required: true,
+      },
+    },
+    computed: {
+      ...mapState([
+        'currentProjectId',
+        'currentBranchId',
+        'rightPanelCollapsed',
+      ]),
+    },
+    methods: {
+      toggleCollapsed() {
+        this.$emit('toggleCollapsed');
+      },
+    },
+
+  };
+</script>
+
+<template>
+  <div class="multi-file-commit-list">
+    <list-collapsed
+      v-if="rightPanelCollapsed"
+    />
+    <template v-else>
+      <ul
+        v-if="fileList.length"
+        class="list-unstyled append-bottom-0"
+      >
+        <li
+          v-for="file in fileList"
+          :key="file.key"
+        >
+          <list-item
+            :file="file"
+          />
+        </li>
+      </ul>
+      <div
+        v-else
+        class="help-block prepend-top-0"
+      >
+        No changes
+      </div>
+    </template>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/list_collapsed.vue b/app/assets/javascripts/ide/components/commit_sidebar/list_collapsed.vue
new file mode 100644
index 00000000000..6a0262f271b
--- /dev/null
+++ b/app/assets/javascripts/ide/components/commit_sidebar/list_collapsed.vue
@@ -0,0 +1,35 @@
+<script>
+  import { mapGetters } from 'vuex';
+  import icon from '../../../vue_shared/components/icon.vue';
+
+  export default {
+    components: {
+      icon,
+    },
+    computed: {
+      ...mapGetters([
+        'addedFiles',
+        'modifiedFiles',
+      ]),
+    },
+  };
+</script>
+
+<template>
+  <div
+    class="multi-file-commit-list-collapsed text-center"
+  >
+    <icon
+      name="file-addition"
+      :size="18"
+      css-classes="multi-file-addition append-bottom-10"
+    />
+    {{ addedFiles.length }}
+    <icon
+      name="file-modified"
+      :size="18"
+      css-classes="multi-file-modified prepend-top-10 append-bottom-10"
+    />
+    {{ modifiedFiles.length }}
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/list_item.vue b/app/assets/javascripts/ide/components/commit_sidebar/list_item.vue
new file mode 100644
index 00000000000..742f746e02f
--- /dev/null
+++ b/app/assets/javascripts/ide/components/commit_sidebar/list_item.vue
@@ -0,0 +1,36 @@
+<script>
+  import icon from '../../../vue_shared/components/icon.vue';
+
+  export default {
+    components: {
+      icon,
+    },
+    props: {
+      file: {
+        type: Object,
+        required: true,
+      },
+    },
+    computed: {
+      iconName() {
+        return this.file.tempFile ? 'file-addition' : 'file-modified';
+      },
+      iconClass() {
+        return `multi-file-${this.file.tempFile ? 'addition' : 'modified'} append-right-8`;
+      },
+    },
+  };
+</script>
+
+<template>
+  <div class="multi-file-commit-list-item">
+    <icon
+      :name="iconName"
+      :size="16"
+      :css-classes="iconClass"
+    />
+    <span class="multi-file-commit-list-path">
+      {{ file.path }}
+    </span>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/ide.vue b/app/assets/javascripts/ide/components/ide.vue
new file mode 100644
index 00000000000..7f29a355eca
--- /dev/null
+++ b/app/assets/javascripts/ide/components/ide.vue
@@ -0,0 +1,73 @@
+<script>
+import { mapState, mapGetters } from 'vuex';
+import ideSidebar from './ide_side_bar.vue';
+import ideContextbar from './ide_context_bar.vue';
+import repoTabs from './repo_tabs.vue';
+import repoFileButtons from './repo_file_buttons.vue';
+import ideStatusBar from './ide_status_bar.vue';
+import repoPreview from './repo_preview.vue';
+import repoEditor from './repo_editor.vue';
+
+export default {
+  computed: {
+    ...mapState([
+      'currentBlobView',
+      'selectedFile',
+    ]),
+    ...mapGetters([
+      'changedFiles',
+      'activeFile',
+    ]),
+  },
+  components: {
+    ideSidebar,
+    ideContextbar,
+    repoTabs,
+    repoFileButtons,
+    ideStatusBar,
+    repoEditor,
+    repoPreview,
+  },
+  mounted() {
+    const returnValue = 'Are you sure you want to lose unsaved changes?';
+    window.onbeforeunload = (e) => {
+      if (!this.changedFiles.length) return undefined;
+
+      Object.assign(e, {
+        returnValue,
+      });
+      return returnValue;
+    };
+  },
+};
+</script>
+
+<template>
+  <div 
+    class="ide-view"
+  >
+    <ide-sidebar/>
+    <div
+      class="multi-file-edit-pane"
+    >
+      <template
+        v-if="activeFile">
+        <repo-tabs/>
+        <component
+          class="multi-file-edit-pane-content"
+          :is="currentBlobView"
+        />
+        <repo-file-buttons/>
+        <ide-status-bar
+          :file="selectedFile"/>
+      </template>
+      <template
+        v-else>
+        <div class="ide-empty-state">
+          <h2 class="clgray">Welcome to the GitLab IDE</h2>
+        </div>
+      </template>
+    </div>
+    <ide-contextbar/>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/ide_context_bar.vue b/app/assets/javascripts/ide/components/ide_context_bar.vue
new file mode 100644
index 00000000000..5a08718e386
--- /dev/null
+++ b/app/assets/javascripts/ide/components/ide_context_bar.vue
@@ -0,0 +1,75 @@
+<script>
+import { mapGetters, mapState, mapActions } from 'vuex';
+import repoCommitSection from './repo_commit_section.vue';
+import icon from '../../vue_shared/components/icon.vue';
+
+export default {
+  components: {
+    repoCommitSection,
+    icon,
+  },
+  computed: {
+    ...mapState([
+      'rightPanelCollapsed',
+    ]),
+    ...mapGetters([
+      'changedFiles',
+    ]),
+    currentIcon() {
+      return this.rightPanelCollapsed ? 'angle-double-left' : 'angle-double-right';
+    },
+  },
+  methods: {
+    ...mapActions([
+      'setPanelCollapsedStatus',
+    ]),
+    toggleCollapsed() {
+      this.setPanelCollapsedStatus({
+        side: 'right',
+        collapsed: !this.rightPanelCollapsed,
+      });
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+    class="multi-file-commit-panel"
+    :class="{
+      'is-collapsed': rightPanelCollapsed,
+    }"
+  >
+    <div 
+      class="multi-file-commit-panel-section">
+      <header
+        class="multi-file-commit-panel-header"
+        :class="{
+            'is-collapsed': rightPanelCollapsed,
+          }"
+        >
+        <div
+          class="multi-file-commit-panel-header-title"
+          v-if="!rightPanelCollapsed">
+          <icon
+            name="list-bulleted"
+            :size="18"
+          />
+          Staged
+        </div>
+        <button
+          type="button"
+          class="btn btn-transparent multi-file-commit-panel-collapse-btn"
+          @click="toggleCollapsed"
+        >
+          <icon
+            :name="currentIcon"
+            :size="18"
+          />
+        </button>
+      </header>
+      <repo-commit-section 
+        class=""/>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/ide_project_branches_tree.vue b/app/assets/javascripts/ide/components/ide_project_branches_tree.vue
new file mode 100644
index 00000000000..bd3a521ff43
--- /dev/null
+++ b/app/assets/javascripts/ide/components/ide_project_branches_tree.vue
@@ -0,0 +1,47 @@
+<script>
+import repoTree from './ide_repo_tree.vue';
+import icon from '../../vue_shared/components/icon.vue';
+import newDropdown from './new_dropdown/index.vue';
+
+export default {
+  components: {
+    repoTree,
+    icon,
+    newDropdown,
+  },
+  props: {
+    projectId: {
+      type: String,
+      required: true,
+    },
+    branch: {
+      type: Object,
+      required: true,
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="branch-container">
+    <div class="branch-header">
+      <div class="branch-header-title">
+        <icon
+          name="branch"
+          :size="12">
+        </icon>
+        {{ branch.name }}
+      </div>
+      <div class="branch-header-btns">
+        <new-dropdown
+          :project-id="projectId"
+          :branch="branch.name"
+          path=""/>
+      </div>
+    </div>
+    <div>
+      <repo-tree
+        :treeId="branch.treeId"/>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/ide_project_tree.vue b/app/assets/javascripts/ide/components/ide_project_tree.vue
new file mode 100644
index 00000000000..61daba6d176
--- /dev/null
+++ b/app/assets/javascripts/ide/components/ide_project_tree.vue
@@ -0,0 +1,47 @@
+<script>
+import branchesTree from './ide_project_branches_tree.vue';
+import projectAvatarImage from '../../vue_shared/components/project_avatar/image.vue';
+
+export default {
+  components: {
+    branchesTree,
+    projectAvatarImage,
+  },
+  props: {
+    project: {
+      type: Object,
+      required: true,
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="projects-sidebar">
+    <div class="context-header">
+      <a 
+        :title="project.name" 
+        :href="project.web_url">
+        <div class="avatar-container s40 project-avatar">
+          <project-avatar-image
+            class="avatar-container project-avatar"
+            :link-href="project.path"
+            :img-src="project.avatar_url"
+            :img-alt="project.name"
+            :img-size="40"
+            />
+        </div>
+        <div class="sidebar-context-title">
+          {{ project.name }}
+        </div>
+      </a>
+    </div>
+    <div class="multi-file-commit-panel-inner-scroll">
+      <branches-tree
+        v-for="(branch, index) in project.branches"
+        :key="branch.name"
+        :project-id="project.path_with_namespace"
+        :branch="branch"/>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/ide_repo_tree.vue b/app/assets/javascripts/ide/components/ide_repo_tree.vue
new file mode 100644
index 00000000000..b6b089e6b25
--- /dev/null
+++ b/app/assets/javascripts/ide/components/ide_repo_tree.vue
@@ -0,0 +1,66 @@
+<script>
+import { mapState } from 'vuex';
+import RepoPreviousDirectory from './repo_prev_directory.vue';
+import RepoFile from './repo_file.vue';
+import RepoLoadingFile from './repo_loading_file.vue';
+import { treeList } from '../stores/utils';
+
+export default {
+  components: {
+    'repo-previous-directory': RepoPreviousDirectory,
+    'repo-file': RepoFile,
+    'repo-loading-file': RepoLoadingFile,
+  },
+  props: {
+    treeId: {
+      type: String,
+      required: true,
+    },
+  },
+  computed: {
+    ...mapState([
+      'loading',
+      'isRoot',
+    ]),
+    ...mapState({
+      projectName(state) {
+        return state.project.name;
+      },
+    }),
+    fetchedList() {
+      return treeList(this.$store.state, this.treeId);
+    },
+    hasPreviousDirectory() {
+      return !this.isRoot && this.fetchedList.length;
+    },
+    showLoading() {
+      return this.loading;
+    },
+  },
+};
+</script>
+
+<template>
+<div>
+  <div class="ide-file-list">
+    <table class="table">
+      <tbody
+        v-if="treeId">
+        <repo-previous-directory
+          v-if="hasPreviousDirectory"
+        />
+        <repo-loading-file
+          v-if="showLoading"
+          v-for="n in 5"
+          :key="n"
+        />
+        <repo-file
+          v-for="file in fetchedList"
+          :key="file.key"
+          :file="file"
+        />
+      </tbody>
+    </table>
+  </div>
+</div>
+</template>
diff --git a/app/assets/javascripts/ide/components/ide_side_bar.vue b/app/assets/javascripts/ide/components/ide_side_bar.vue
new file mode 100644
index 00000000000..535398d98c2
--- /dev/null
+++ b/app/assets/javascripts/ide/components/ide_side_bar.vue
@@ -0,0 +1,62 @@
+<script>
+import { mapState, mapActions } from 'vuex';
+import projectTree from './ide_project_tree.vue';
+import icon from '../../vue_shared/components/icon.vue';
+
+export default {
+  components: {
+    projectTree,
+    icon,
+  },
+  computed: {
+    ...mapState([
+      'projects',
+      'leftPanelCollapsed',
+    ]),
+    currentIcon() {
+      return this.leftPanelCollapsed ? 'angle-double-right' : 'angle-double-left';
+    },
+  },
+  methods: {
+    ...mapActions([
+      'setPanelCollapsedStatus',
+    ]),
+    toggleCollapsed() {
+      this.setPanelCollapsedStatus({
+        side: 'left',
+        collapsed: !this.leftPanelCollapsed,
+      });
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+      class="multi-file-commit-panel"
+      :class="{
+        'is-collapsed': leftPanelCollapsed,
+      }"
+    >
+    <div class="multi-file-commit-panel-inner">
+      <project-tree
+        v-for="(project, index) in projects"
+        :key="project.id"
+        :project="project"/>
+    </div>
+    <button
+      type="button"
+      class="btn btn-transparent left-collapse-btn"
+      @click="toggleCollapsed"
+    >
+      <icon
+        :name="currentIcon"
+        :size="18"
+      />
+      <span
+        v-if="!leftPanelCollapsed"
+        class="collapse-text"
+      >Collapse sidebar</span>
+    </button>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/ide_status_bar.vue b/app/assets/javascripts/ide/components/ide_status_bar.vue
new file mode 100644
index 00000000000..a24abadd936
--- /dev/null
+++ b/app/assets/javascripts/ide/components/ide_status_bar.vue
@@ -0,0 +1,71 @@
+<script>
+import { mapState } from 'vuex';
+import icon from '../../vue_shared/components/icon.vue';
+import tooltip from '../../vue_shared/directives/tooltip';
+import timeAgoMixin from '../../vue_shared/mixins/timeago';
+
+export default {
+  props: {
+    file: {
+      type: Object,
+      required: true,
+    },
+  },
+  components: {
+    icon,
+  },
+  directives: {
+    tooltip,
+  },
+  mixins: [
+    timeAgoMixin,
+  ],
+  computed: {
+    ...mapState([
+      'selectedFile',
+    ]),
+  },
+};
+</script>
+
+<template>
+  <div
+    class="ide-status-bar">
+    <div>
+      <icon
+        name="branch"
+        :size="12">
+      </icon>
+      {{ selectedFile.branchId }}
+    </div>
+    <div>
+      <div
+        v-if="selectedFile.lastCommit && selectedFile.lastCommit.id">
+        Last commit:
+        <a
+          v-tooltip
+          :title="selectedFile.lastCommit.message"
+          :href="selectedFile.lastCommit.url">
+          {{ timeFormated(selectedFile.lastCommit.updatedAt) }} by 
+          {{ selectedFile.lastCommit.author }}
+        </a>
+      </div>      
+    </div>
+    <div
+      class="text-right">
+      {{ selectedFile.name }}
+    </div>
+    <div 
+      class="text-right">
+      {{ selectedFile.eol }}
+    </div>
+    <div 
+      class="text-right">
+      {{ file.editorRow }}:{{ file.editorColumn }}
+    </div>
+    <div 
+      class="text-right">
+      {{ selectedFile.fileLanguage }}
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/new_branch_form.vue b/app/assets/javascripts/ide/components/new_branch_form.vue
new file mode 100644
index 00000000000..2119d373d31
--- /dev/null
+++ b/app/assets/javascripts/ide/components/new_branch_form.vue
@@ -0,0 +1,108 @@
+<script>
+  import { mapState, mapActions } from 'vuex';
+  import flash, { hideFlash } from '../../flash';
+  import loadingIcon from '../../vue_shared/components/loading_icon.vue';
+
+  export default {
+    components: {
+      loadingIcon,
+    },
+    data() {
+      return {
+        branchName: '',
+        loading: false,
+      };
+    },
+    computed: {
+      ...mapState([
+        'currentBranch',
+      ]),
+      btnDisabled() {
+        return this.loading || this.branchName === '';
+      },
+    },
+    methods: {
+      ...mapActions([
+        'createNewBranch',
+      ]),
+      toggleDropdown() {
+        this.$dropdown.dropdown('toggle');
+      },
+      submitNewBranch() {
+        // need to query as the element is appended outside of Vue
+        const flashEl = this.$refs.flashContainer.querySelector('.flash-alert');
+
+        this.loading = true;
+
+        if (flashEl) {
+          hideFlash(flashEl, false);
+        }
+
+        this.createNewBranch(this.branchName)
+          .then(() => {
+            this.loading = false;
+            this.branchName = '';
+
+            if (this.dropdownText) {
+              this.dropdownText.textContent = this.currentBranchId;
+            }
+
+            this.toggleDropdown();
+          })
+          .catch(res => res.json().then((data) => {
+            this.loading = false;
+            flash(data.message, 'alert', this.$el);
+          }));
+      },
+    },
+    created() {
+      // Dropdown is outside of Vue instance & is controlled by Bootstrap
+      this.$dropdown = $('.git-revision-dropdown');
+
+      // text element is outside Vue app
+      this.dropdownText = document.querySelector('.project-refs-form .dropdown-toggle-text');
+    },
+  };
+</script>
+
+<template>
+  <div>
+    <div
+      class="flash-container"
+      ref="flashContainer"
+    >
+    </div>
+    <p>
+      Create from:
+      <code>{{ currentBranch }}</code>
+    </p>
+    <input
+      class="form-control js-new-branch-name"
+      type="text"
+      placeholder="Name new branch"
+      v-model="branchName"
+      @keyup.enter.stop.prevent="submitNewBranch"
+    />
+    <div class="prepend-top-default clearfix">
+      <button
+        type="button"
+        class="btn btn-primary pull-left"
+        :disabled="btnDisabled"
+        @click.stop.prevent="submitNewBranch"
+      >
+        <loading-icon
+          v-if="loading"
+          :inline="true"
+        />
+        <span>Create</span>
+      </button>
+      <button
+        type="button"
+        class="btn btn-default pull-right"
+        @click.stop.prevent="toggleDropdown"
+      >
+        Cancel
+      </button>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/new_dropdown/index.vue b/app/assets/javascripts/ide/components/new_dropdown/index.vue
new file mode 100644
index 00000000000..6e67e99a70f
--- /dev/null
+++ b/app/assets/javascripts/ide/components/new_dropdown/index.vue
@@ -0,0 +1,101 @@
+<script>
+  import newModal from './modal.vue';
+  import upload from './upload.vue';
+  import icon from '../../../vue_shared/components/icon.vue';
+
+  export default {
+    props: {
+      branch: {
+        type: String,
+        required: true,
+      },
+      path: {
+        type: String,
+        required: true,
+      },
+      parent: {
+        type: Object,
+        default: null,
+      },
+    },
+    components: {
+      icon,
+      newModal,
+      upload,
+    },
+    data() {
+      return {
+        openModal: false,
+        modalType: '',
+      };
+    },
+    methods: {
+      createNewItem(type) {
+        this.modalType = type;
+        this.toggleModalOpen();
+      },
+      toggleModalOpen() {
+        this.openModal = !this.openModal;
+      },
+    },
+  };
+</script>
+
+<template>
+  <div class="repo-new-btn pull-right">
+    <div class="dropdown">
+      <button
+        type="button"
+        class="btn btn-sm btn-default dropdown-toggle add-to-tree"
+        data-toggle="dropdown"
+        aria-label="Create new file or directory"
+      >
+        <icon
+          name="plus"
+          :size="12"
+          css-classes="pull-left"
+        />
+        <icon
+          name="arrow-down"
+          :size="12"
+          css-classes="pull-left"
+        />
+      </button>
+      <ul class="dropdown-menu dropdown-menu-right">
+        <li>
+          <a
+            href="#"
+            role="button"
+            @click.prevent="createNewItem('blob')"
+          >
+            {{ __('New file') }}
+          </a>
+        </li>
+        <li>
+          <upload
+            :branch-id="branch"
+            :path="path"
+            :parent="parent"
+          />
+        </li>
+        <li>
+          <a
+            href="#"
+            role="button"
+            @click.prevent="createNewItem('tree')"
+          >
+            {{ __('New directory') }}
+          </a>
+        </li>
+      </ul>
+    </div>
+    <new-modal
+      v-if="openModal"
+      :type="modalType"
+      :branch-id="branch"
+      :path="path"
+      :parent="parent"
+      @toggle="toggleModalOpen"
+    />
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/new_dropdown/modal.vue b/app/assets/javascripts/ide/components/new_dropdown/modal.vue
new file mode 100644
index 00000000000..a0650d37690
--- /dev/null
+++ b/app/assets/javascripts/ide/components/new_dropdown/modal.vue
@@ -0,0 +1,112 @@
+<script>
+  import { mapActions, mapState } from 'vuex';
+  import { __ } from '../../../locale';
+  import modal from '../../../vue_shared/components/modal.vue';
+
+  export default {
+    props: {
+      branchId: {
+        type: String,
+        required: true,
+      },
+      parent: {
+        type: Object,
+        default: null,
+      },
+      type: {
+        type: String,
+        required: true,
+      },
+      path: {
+        type: String,
+        required: true,
+      },
+    },
+    data() {
+      return {
+        entryName: this.path !== '' ? `${this.path}/` : '',
+      };
+    },
+    components: {
+      modal,
+    },
+    methods: {
+      ...mapActions([
+        'createTempEntry',
+      ]),
+      createEntryInStore() {
+        this.createTempEntry({
+          projectId: this.currentProjectId,
+          branchId: this.branchId,
+          parent: this.parent,
+          name: this.entryName.replace(new RegExp(`^${this.path}/`), ''),
+          type: this.type,
+        });
+
+        this.toggleModalOpen();
+      },
+      toggleModalOpen() {
+        this.$emit('toggle');
+      },
+    },
+    computed: {
+      ...mapState([
+        'currentProjectId',
+      ]),
+      modalTitle() {
+        if (this.type === 'tree') {
+          return __('Create new directory');
+        }
+
+        return __('Create new file');
+      },
+      buttonLabel() {
+        if (this.type === 'tree') {
+          return __('Create directory');
+        }
+
+        return __('Create file');
+      },
+      formLabelName() {
+        if (this.type === 'tree') {
+          return __('Directory name');
+        }
+
+        return __('File name');
+      },
+    },
+    mounted() {
+      this.$refs.fieldName.focus();
+    },
+  };
+</script>
+
+<template>
+  <modal
+    :title="modalTitle"
+    :primary-button-label="buttonLabel"
+    kind="success"
+    @toggle="toggleModalOpen"
+    @submit="createEntryInStore"
+  >
+    <form
+      class="form-horizontal"
+      slot="body"
+      @submit.prevent="createEntryInStore"
+    >
+      <fieldset class="form-group append-bottom-0">
+        <label class="label-light col-sm-3">
+          {{ formLabelName }}
+        </label>
+        <div class="col-sm-9">
+          <input
+            type="text"
+            class="form-control"
+            v-model="entryName"
+            ref="fieldName"
+          />
+        </div>
+      </fieldset>
+    </form>
+  </modal>
+</template>
diff --git a/app/assets/javascripts/ide/components/new_dropdown/upload.vue b/app/assets/javascripts/ide/components/new_dropdown/upload.vue
new file mode 100644
index 00000000000..2a2f2a241fc
--- /dev/null
+++ b/app/assets/javascripts/ide/components/new_dropdown/upload.vue
@@ -0,0 +1,87 @@
+<script>
+  import { mapActions, mapState } from 'vuex';
+
+  export default {
+    props: {
+      branchId: {
+        type: String,
+        required: true,
+      },
+      parent: {
+        type: Object,
+        default: null,
+      },
+    },
+    computed: {
+      ...mapState([
+        'trees',
+        'currentProjectId',
+      ]),
+    },
+    methods: {
+      ...mapActions([
+        'createTempEntry',
+      ]),
+      createFile(target, file, isText) {
+        const { name } = file;
+        let { result } = target;
+
+        if (!isText) {
+          result = result.split('base64,')[1];
+        }
+
+        this.createTempEntry({
+          name,
+          projectId: this.currentProjectId,
+          branchId: this.branchId,
+          parent: this.parent,
+          type: 'blob',
+          content: result,
+          base64: !isText,
+        });
+      },
+      readFile(file) {
+        const reader = new FileReader();
+        const isText = file.type.match(/text.*/) !== null;
+
+        reader.addEventListener('load', e => this.createFile(e.target, file, isText), { once: true });
+
+        if (isText) {
+          reader.readAsText(file);
+        } else {
+          reader.readAsDataURL(file);
+        }
+      },
+      openFile() {
+        Array.from(this.$refs.fileUpload.files).forEach(file => this.readFile(file));
+      },
+      startFileUpload() {
+        this.$refs.fileUpload.click();
+      },
+    },
+    mounted() {
+      this.$refs.fileUpload.addEventListener('change', this.openFile);
+    },
+    beforeDestroy() {
+      this.$refs.fileUpload.removeEventListener('change', this.openFile);
+    },
+  };
+</script>
+
+<template>
+  <div>
+    <a
+      href="#"
+      role="button"
+      @click.prevent="startFileUpload"
+    >
+      {{ __('Upload file') }}
+    </a>
+    <input
+      id="file-upload"
+      type="file"
+      class="hidden"
+      ref="fileUpload"
+    />
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_commit_section.vue b/app/assets/javascripts/ide/components/repo_commit_section.vue
new file mode 100644
index 00000000000..470db2c9650
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_commit_section.vue
@@ -0,0 +1,171 @@
+<script>
+import { mapGetters, mapState, mapActions } from 'vuex';
+import tooltip from '../../vue_shared/directives/tooltip';
+import icon from '../../vue_shared/components/icon.vue';
+import modal from '../../vue_shared/components/modal.vue';
+import commitFilesList from './commit_sidebar/list.vue';
+
+export default {
+  components: {
+    modal,
+    icon,
+    commitFilesList,
+  },
+  directives: {
+    tooltip,
+  },
+  data() {
+    return {
+      showNewBranchModal: false,
+      submitCommitsLoading: false,
+      startNewMR: false,
+      commitMessage: '',
+    };
+  },
+  computed: {
+    ...mapState([
+      'currentProjectId',
+      'currentBranchId',
+      'rightPanelCollapsed',
+    ]),
+    ...mapGetters([
+      'changedFiles',
+    ]),
+    commitButtonDisabled() {
+      return this.commitMessage === '' || this.submitCommitsLoading || !this.changedFiles.length;
+    },
+    commitMessageCount() {
+      return this.commitMessage.length;
+    },
+  },
+  methods: {
+    ...mapActions([
+      'checkCommitStatus',
+      'commitChanges',
+      'getTreeData',
+      'setPanelCollapsedStatus',
+    ]),
+    makeCommit(newBranch = false) {
+      const createNewBranch = newBranch || this.startNewMR;
+
+      const payload = {
+        branch: createNewBranch ? `${this.currentBranchId}-${new Date().getTime().toString()}` : this.currentBranchId,
+        commit_message: this.commitMessage,
+        actions: this.changedFiles.map(f => ({
+          action: f.tempFile ? 'create' : 'update',
+          file_path: f.path,
+          content: f.content,
+          encoding: f.base64 ? 'base64' : 'text',
+        })),
+        start_branch: createNewBranch ? this.currentBranchId : undefined,
+      };
+
+      this.showNewBranchModal = false;
+      this.submitCommitsLoading = true;
+
+      this.commitChanges({ payload, newMr: this.startNewMR })
+        .then(() => {
+          this.submitCommitsLoading = false;
+          this.$store.dispatch('getTreeData', {
+            projectId: this.currentProjectId,
+            branch: this.currentBranchId,
+            endpoint: `/tree/${this.currentBranchId}`,
+            force: true,
+          });
+        })
+        .catch(() => {
+          this.submitCommitsLoading = false;
+        });
+    },
+    tryCommit() {
+      this.submitCommitsLoading = true;
+
+      this.checkCommitStatus()
+        .then((branchChanged) => {
+          if (branchChanged) {
+            this.showNewBranchModal = true;
+          } else {
+            this.makeCommit();
+          }
+        })
+        .catch(() => {
+          this.submitCommitsLoading = false;
+        });
+    },
+    toggleCollapsed() {
+      this.setPanelCollapsedStatus({
+        side: 'right',
+        collapsed: !this.rightPanelCollapsed,
+      });
+    },
+  },
+};
+</script>
+
+<template>
+<div class="multi-file-commit-panel-section">
+  <modal
+    v-if="showNewBranchModal"
+    :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?')"
+    @toggle="showNewBranchModal = false"
+    @submit="makeCommit(true)"
+  />
+  <commit-files-list
+    title="Staged"
+    :file-list="changedFiles"
+    :collapsed="rightPanelCollapsed"
+    @toggleCollapsed="toggleCollapsed"
+  />
+  <form
+    class="form-horizontal multi-file-commit-form"
+    @submit.prevent="tryCommit"
+    v-if="!rightPanelCollapsed"
+  >
+    <div class="multi-file-commit-fieldset">
+      <textarea
+        class="form-control multi-file-commit-message"
+        name="commit-message"
+        v-model="commitMessage"
+        placeholder="Commit message"
+      >
+      </textarea>
+    </div>
+    <div class="multi-file-commit-fieldset">
+      <label
+        v-tooltip
+        title="Create a new merge request with these changes"
+        data-container="body"
+        data-placement="top"
+      >
+        <input
+          type="checkbox"
+          v-model="startNewMR"
+        />
+        Merge Request
+      </label>
+      <button
+        type="submit"
+        :disabled="commitButtonDisabled"
+        class="btn btn-default btn-sm append-right-10 prepend-left-10"
+      >
+        <i
+          v-if="submitCommitsLoading"
+          class="js-commit-loading-icon fa fa-spinner fa-spin"
+          aria-hidden="true"
+          aria-label="loading"
+        >
+        </i>
+        Commit
+      </button>
+      <div
+        class="multi-file-commit-message-count"
+      >
+        {{ commitMessageCount }}
+      </div>
+    </div>
+  </form>
+</div>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_edit_button.vue b/app/assets/javascripts/ide/components/repo_edit_button.vue
new file mode 100644
index 00000000000..37bd9003e96
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_edit_button.vue
@@ -0,0 +1,57 @@
+<script>
+import { mapGetters, mapActions, mapState } from 'vuex';
+import modal from '../../vue_shared/components/modal.vue';
+
+export default {
+  components: {
+    modal,
+  },
+  computed: {
+    ...mapState([
+      'editMode',
+      'discardPopupOpen',
+    ]),
+    ...mapGetters([
+      'canEditFile',
+    ]),
+    buttonLabel() {
+      return this.editMode ? this.__('Cancel edit') : this.__('Edit');
+    },
+  },
+  methods: {
+    ...mapActions([
+      'toggleEditMode',
+      'closeDiscardPopup',
+    ]),
+  },
+};
+</script>
+
+<template>
+  <div class="editable-mode">
+    <button
+      v-if="canEditFile"
+      class="btn btn-default"
+      type="button"
+      @click.prevent="toggleEditMode()">
+      <i
+        v-if="!editMode"
+        class="fa fa-pencil"
+        aria-hidden="true">
+      </i>
+      <span>
+        {{buttonLabel}}
+      </span>
+    </button>
+    <modal
+      v-if="discardPopupOpen"
+      class="text-left"
+      :primary-button-label="__('Discard changes')"
+      kind="warning"
+      :title="__('Are you sure?')"
+      :text="__('Are you sure you want to discard your changes?')"
+      @toggle="closeDiscardPopup"
+      @submit="toggleEditMode(true)"
+    />
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_editor.vue b/app/assets/javascripts/ide/components/repo_editor.vue
new file mode 100644
index 00000000000..221be4b9074
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_editor.vue
@@ -0,0 +1,127 @@
+<script>
+/* global monaco */
+import { mapState, mapGetters, mapActions } from 'vuex';
+import flash from '../../flash';
+import monacoLoader from '../monaco_loader';
+import Editor from '../lib/editor';
+
+export default {
+  beforeDestroy() {
+    this.editor.dispose();
+  },
+  mounted() {
+    if (this.editor && monaco) {
+      this.initMonaco();
+    } else {
+      monacoLoader(['vs/editor/editor.main'], () => {
+        this.editor = Editor.create(monaco);
+
+        this.initMonaco();
+      });
+    }
+  },
+  methods: {
+    ...mapActions([
+      'getRawFileData',
+      'changeFileContent',
+      'setFileLanguage',
+      'setEditorPosition',
+      'setFileEOL',
+    ]),
+    initMonaco() {
+      if (this.shouldHideEditor) return;
+
+      this.editor.clearEditor();
+
+      this.getRawFileData(this.activeFile)
+        .then(() => {
+          this.editor.createInstance(this.$refs.editor);
+        })
+        .then(() => this.setupEditor())
+        .catch(() => flash('Error setting up monaco. Please try again.'));
+    },
+    setupEditor() {
+      if (!this.activeFile) return;
+
+      const model = this.editor.createModel(this.activeFile);
+
+      this.editor.attachModel(model);
+
+      model.onChange((m) => {
+        this.changeFileContent({
+          file: this.activeFile,
+          content: m.getValue(),
+        });
+      });
+
+      // Handle Cursor Position
+      this.editor.onPositionChange((instance, e) => {
+        this.setEditorPosition({
+          editorRow: e.position.lineNumber,
+          editorColumn: e.position.column,
+        });
+      });
+
+      this.editor.setPosition({
+        lineNumber: this.activeFile.editorRow,
+        column: this.activeFile.editorColumn,
+      });
+
+      // Handle File Language
+      this.setFileLanguage({
+        fileLanguage: model.language,
+      });
+
+      // Get File eol
+      this.setFileEOL({
+        eol: model.eol,
+      });
+    },
+  },
+  watch: {
+    activeFile(oldVal, newVal) {
+      if (newVal && !newVal.active) {
+        this.initMonaco();
+      }
+    },
+    leftPanelCollapsed() {
+      this.editor.updateDimensions();
+    },
+    rightPanelCollapsed() {
+      this.editor.updateDimensions();
+    },
+  },
+  computed: {
+    ...mapGetters([
+      'activeFile',
+      'activeFileExtension',
+    ]),
+    ...mapState([
+      'leftPanelCollapsed',
+      'rightPanelCollapsed',
+    ]),
+    shouldHideEditor() {
+      return this.activeFile.binary && !this.activeFile.raw;
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+    id="ide"
+    class="blob-viewer-container blob-editor-container"
+  >
+    <div
+      v-if="shouldHideEditor"
+      v-html="activeFile.html"
+    >
+    </div>
+    <div
+      v-show="!shouldHideEditor"
+      ref="editor"
+      class="multi-file-editor-holder"
+    >
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_file.vue b/app/assets/javascripts/ide/components/repo_file.vue
new file mode 100644
index 00000000000..09ca11531b1
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_file.vue
@@ -0,0 +1,165 @@
+<script>
+  import { mapState } from 'vuex';
+  import timeAgoMixin from '../../vue_shared/mixins/timeago';
+  import skeletonLoadingContainer from '../../vue_shared/components/skeleton_loading_container.vue';
+  import newDropdown from './new_dropdown/index.vue';
+
+  export default {
+    mixins: [
+      timeAgoMixin,
+    ],
+    components: {
+      skeletonLoadingContainer,
+      newDropdown,
+    },
+    props: {
+      file: {
+        type: Object,
+        required: true,
+      },
+      showExtraColumns: {
+        type: Boolean,
+        default: false,
+      },
+    },
+    computed: {
+      ...mapState([
+        'leftPanelCollapsed',
+      ]),
+      fileIcon() {
+        return {
+          'fa-spinner fa-spin': this.file.loading,
+          [this.file.icon]: !this.file.loading,
+          'fa-folder-open': !this.file.loading && this.file.opened,
+        };
+      },
+      isSubmodule() {
+        return this.file.type === 'submodule';
+      },
+      isTree() {
+        return this.file.type === 'tree';
+      },
+      levelIndentation() {
+        return {
+          marginLeft: `${this.file.level * 16}px`,
+        };
+      },
+      shortId() {
+        return this.file.id.substr(0, 8);
+      },
+      submoduleColSpan() {
+        return !this.leftPanelCollapsed && this.isSubmodule ? 3 : 1;
+      },
+      fileClass() {
+        if (this.file.type === 'blob') {
+          if (this.file.active) {
+            return 'file-open file-active';
+          }
+          return this.file.opened ? 'file-open' : '';
+        }
+        return '';
+      },
+      changedClass() {
+        return {
+          'fa-circle unsaved-icon': this.file.changed || this.file.tempFile,
+        };
+      },
+    },
+    methods: {
+      clickFile(row) {
+        // Manual Action if a tree is selected/opened
+        if (this.file.type === 'tree' && this.$router.currentRoute.path === `/project${row.url}`) {
+          this.$store.dispatch('toggleTreeOpen', {
+            endpoint: this.file.url,
+            tree: this.file,
+          });
+        }
+        this.$router.push(`/project${row.url}`);
+      },
+    },
+    updated() {
+      if (this.file.type === 'blob' && this.file.active) {
+        this.$el.scrollIntoView();
+      }
+    },
+  };
+</script>
+
+<template>
+  <tr
+    class="file"
+    :class="fileClass"
+    @click="clickFile(file)">
+    <td
+      class="multi-file-table-name"
+      :colspan="submoduleColSpan"
+    >
+      <i
+        class="fa fa-fw file-icon"
+        :class="fileIcon"
+        :style="levelIndentation"
+        aria-hidden="true"
+      >
+      </i>
+      <a
+        class="repo-file-name"
+      >
+        {{ file.name }}
+      </a>
+      <new-dropdown
+        v-if="isTree"
+        :project-id="file.projectId"
+        :branch="file.branchId"
+        :path="file.path"
+        :parent="file"/>
+      <i
+        class="fa"
+        v-if="changedClass"
+        :class="changedClass"
+        aria-hidden="true"
+      >
+      </i>
+      <template v-if="isSubmodule && file.id">
+        @
+        <span class="commit-sha">
+          <a
+            @click.stop
+            :href="file.tree_url"
+          >
+            {{ shortId }}
+          </a>
+        </span>
+      </template>
+    </td>
+
+    <template v-if="showExtraColumns && !isSubmodule">
+      <td class="multi-file-table-col-commit-message hidden-sm hidden-xs">
+        <a
+          v-if="file.lastCommit.message"
+          @click.stop
+          :href="file.lastCommit.url"
+        >
+          {{ file.lastCommit.message }}
+        </a>
+        <skeleton-loading-container
+          v-else
+          :small="true"
+        />
+      </td>
+
+      <td class="commit-update hidden-xs text-right">
+        <span
+          v-if="file.lastCommit.updatedAt"
+          :title="tooltipTitle(file.lastCommit.updatedAt)"
+        >
+          {{ timeFormated(file.lastCommit.updatedAt) }}
+        </span>
+        <skeleton-loading-container
+          v-else
+          class="animation-container-right"
+          :small="true"
+        />
+      </td>
+    </template>
+  </tr>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_file_buttons.vue b/app/assets/javascripts/ide/components/repo_file_buttons.vue
new file mode 100644
index 00000000000..34f0d51819a
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_file_buttons.vue
@@ -0,0 +1,56 @@
+<script>
+import { mapGetters } from 'vuex';
+
+export default {
+  computed: {
+    ...mapGetters([
+      'activeFile',
+    ]),
+    showButtons() {
+      return this.activeFile.rawPath ||
+        this.activeFile.blamePath ||
+        this.activeFile.commitsPath ||
+        this.activeFile.permalink;
+    },
+    rawDownloadButtonLabel() {
+      return this.activeFile.binary ? 'Download' : 'Raw';
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+    v-if="showButtons"
+    class="multi-file-editor-btn-group"
+  >
+    <a
+      :href="activeFile.rawPath"
+      target="_blank"
+      class="btn btn-default btn-sm raw"
+      rel="noopener noreferrer">
+      {{ rawDownloadButtonLabel }}
+    </a>
+
+    <div
+      class="btn-group"
+      role="group"
+      aria-label="File actions">
+      <a
+        :href="activeFile.blamePath"
+        class="btn btn-default btn-sm blame">
+        Blame
+      </a>
+      <a
+        :href="activeFile.commitsPath"
+        class="btn btn-default btn-sm history">
+        History
+      </a>
+      <a
+        :href="activeFile.permalink"
+        class="btn btn-default btn-sm permalink">
+        Permalink
+      </a>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_loading_file.vue b/app/assets/javascripts/ide/components/repo_loading_file.vue
new file mode 100644
index 00000000000..7eb840c7608
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_loading_file.vue
@@ -0,0 +1,44 @@
+<script>
+  import { mapState } from 'vuex';
+  import skeletonLoadingContainer from '../../vue_shared/components/skeleton_loading_container.vue';
+
+  export default {
+    components: {
+      skeletonLoadingContainer,
+    },
+    computed: {
+      ...mapState([
+        'leftPanelCollapsed',
+      ]),
+    },
+  };
+</script>
+
+<template>
+  <tr
+    class="loading-file"
+    aria-label="Loading files"
+  >
+    <td class="multi-file-table-col-name">
+      <skeleton-loading-container
+        :small="true"
+      />
+    </td>
+    <template v-if="!leftPanelCollapsed">
+      <td
+        class="hidden-sm hidden-xs">
+        <skeleton-loading-container
+          :small="true"
+        />
+      </td>
+
+      <td
+        class="hidden-xs">
+        <skeleton-loading-container
+          class="animation-container-right"
+          :small="true"
+        />
+      </td>
+    </template>
+  </tr>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_prev_directory.vue b/app/assets/javascripts/ide/components/repo_prev_directory.vue
new file mode 100644
index 00000000000..7cd359ea4ed
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_prev_directory.vue
@@ -0,0 +1,32 @@
+<script>
+  import { mapState, mapActions } from 'vuex';
+
+  export default {
+    computed: {
+      ...mapState([
+        'parentTreeUrl',
+        'leftPanelCollapsed',
+      ]),
+      colSpanCondition() {
+        return this.leftPanelCollapsed ? undefined : 3;
+      },
+    },
+    methods: {
+      ...mapActions([
+        'getTreeData',
+      ]),
+    },
+  };
+</script>
+
+<template>
+  <tr class="file prev-directory">
+    <td
+      :colspan="colSpanCondition"
+      class="table-cell"
+      @click.prevent="getTreeData({ endpoint: parentTreeUrl })"
+    >
+      <a :href="parentTreeUrl">...</a>
+    </td>
+  </tr>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_preview.vue b/app/assets/javascripts/ide/components/repo_preview.vue
new file mode 100644
index 00000000000..3d1e0297bd5
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_preview.vue
@@ -0,0 +1,65 @@
+<script>
+import { mapGetters } from 'vuex';
+import LineHighlighter from '../../line_highlighter';
+import syntaxHighlight from '../../syntax_highlight';
+
+export default {
+  computed: {
+    ...mapGetters([
+      'activeFile',
+    ]),
+    renderErrorTooLarge() {
+      return this.activeFile.renderError === 'too_large';
+    },
+  },
+  methods: {
+    highlightFile() {
+      syntaxHighlight($(this.$el).find('.file-content'));
+    },
+  },
+  mounted() {
+    this.highlightFile();
+    this.lineHighlighter = new LineHighlighter({
+      fileHolderSelector: '.blob-viewer-container',
+      scrollFileHolder: true,
+    });
+  },
+  updated() {
+    this.$nextTick(() => {
+      this.highlightFile();
+    });
+  },
+};
+</script>
+
+<template>
+<div>
+  <div
+    v-if="!activeFile.renderError"
+    v-html="activeFile.html"
+    class="multi-file-preview-holder"
+  >
+  </div>
+  <div
+    v-else-if="activeFile.tempFile"
+    class="vertical-center render-error">
+    <p class="text-center">
+      The source could not be displayed for this temporary file.
+    </p>
+  </div>
+  <div
+    v-else-if="renderErrorTooLarge"
+    class="vertical-center render-error">
+    <p class="text-center">
+      The source could not be displayed because it is too large. You can <a :href="activeFile.rawPath" download>download</a> it instead.
+    </p>
+  </div>
+  <div
+    v-else
+    class="vertical-center render-error">
+    <p class="text-center">
+      The source could not be displayed because a rendering error occurred. You can <a :href="activeFile.rawPath" download>download</a> it instead.
+    </p>
+  </div>
+</div>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_tab.vue b/app/assets/javascripts/ide/components/repo_tab.vue
new file mode 100644
index 00000000000..5bd63ac9ec5
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_tab.vue
@@ -0,0 +1,69 @@
+<script>
+import { mapActions } from 'vuex';
+
+export default {
+  props: {
+    tab: {
+      type: Object,
+      required: true,
+    },
+  },
+
+  computed: {
+    closeLabel() {
+      if (this.tab.changed || this.tab.tempFile) {
+        return `${this.tab.name} changed`;
+      }
+      return `Close ${this.tab.name}`;
+    },
+    changedClass() {
+      const tabChangedObj = {
+        'fa-times close-icon': !this.tab.changed && !this.tab.tempFile,
+        'fa-circle unsaved-icon': this.tab.changed || this.tab.tempFile,
+      };
+      return tabChangedObj;
+    },
+  },
+
+  methods: {
+    ...mapActions([
+      'closeFile',
+    ]),
+    clickFile(tab) {
+      this.$router.push(`/project${tab.url}`);
+    },
+  },
+};
+</script>
+
+<template>
+  <li
+    @click="clickFile(tab)"
+  >
+    <button
+      type="button"
+      class="multi-file-tab-close"
+      @click.stop.prevent="closeFile({ file: tab })"
+      :aria-label="closeLabel"
+      :class="{
+        'modified': tab.changed,
+      }"
+      :disabled="tab.changed"
+    >
+      <i
+        class="fa"
+        :class="changedClass"
+        aria-hidden="true"
+      >
+      </i>
+    </button>
+
+    <div
+      class="multi-file-tab"
+      :class="{active : tab.active }"
+      :title="tab.url"
+    >
+      {{ tab.name }}
+    </div>
+  </li>
+</template>
diff --git a/app/assets/javascripts/ide/components/repo_tabs.vue b/app/assets/javascripts/ide/components/repo_tabs.vue
new file mode 100644
index 00000000000..ab0bef4f0ac
--- /dev/null
+++ b/app/assets/javascripts/ide/components/repo_tabs.vue
@@ -0,0 +1,27 @@
+<script>
+  import { mapState } from 'vuex';
+  import RepoTab from './repo_tab.vue';
+
+  export default {
+    components: {
+      'repo-tab': RepoTab,
+    },
+    computed: {
+      ...mapState([
+        'openFiles',
+      ]),
+    },
+  };
+</script>
+
+<template>
+  <ul
+    class="multi-file-tabs list-unstyled append-bottom-0"
+  >
+    <repo-tab
+      v-for="tab in openFiles"
+      :key="tab.id"
+      :tab="tab"
+    />
+  </ul>
+</template>
diff --git a/app/assets/javascripts/ide/ide_router.js b/app/assets/javascripts/ide/ide_router.js
new file mode 100644
index 00000000000..a9cbf8e370f
--- /dev/null
+++ b/app/assets/javascripts/ide/ide_router.js
@@ -0,0 +1,101 @@
+import Vue from 'vue';
+import VueRouter from 'vue-router';
+import store from './stores';
+import flash from '../flash';
+import {
+  getTreeEntry,
+} from './stores/utils';
+
+Vue.use(VueRouter);
+
+/**
+ * Routes below /-/ide/:
+
+/project/h5bp/html5-boilerplate/blob/master
+/project/h5bp/html5-boilerplate/blob/master/app/js/test.js
+
+/project/h5bp/html5-boilerplate/mr/123
+/project/h5bp/html5-boilerplate/mr/123/app/js/test.js
+
+/workspace/123
+/workspace/project/h5bp/html5-boilerplate/blob/my-special-branch
+/workspace/project/h5bp/html5-boilerplate/mr/123
+
+/ = /workspace
+
+/settings
+*/
+
+// Unfortunately Vue Router doesn't work without at least a fake component
+// If you do only data handling
+const EmptyRouterComponent = {
+  render(createElement) {
+    return createElement('div');
+  },
+};
+
+const router = new VueRouter({
+  mode: 'history',
+  base: `${gon.relative_url_root}/-/ide/`,
+  routes: [
+    {
+      path: '/project/:namespace/:project',
+      component: EmptyRouterComponent,
+      children: [
+        {
+          path: ':targetmode/:branch/*',
+          component: EmptyRouterComponent,
+        },
+        {
+          path: 'mr/:mrid',
+          component: EmptyRouterComponent,
+        },
+      ],
+    },
+  ],
+});
+
+router.beforeEach((to, from, next) => {
+  if (to.params.namespace && to.params.project) {
+    store.dispatch('getProjectData', {
+      namespace: to.params.namespace,
+      projectId: to.params.project,
+    })
+    .then(() => {
+      const fullProjectId = `${to.params.namespace}/${to.params.project}`;
+
+      if (to.params.branch) {
+        store.dispatch('getBranchData', {
+          projectId: fullProjectId,
+          branchId: to.params.branch,
+        });
+
+        store.dispatch('getTreeData', {
+          projectId: fullProjectId,
+          branch: to.params.branch,
+          endpoint: `/tree/${to.params.branch}`,
+        })
+        .then(() => {
+          if (to.params[0]) {
+            const treeEntry = getTreeEntry(store, `${to.params.namespace}/${to.params.project}/${to.params.branch}`, to.params[0]);
+            if (treeEntry) {
+              store.dispatch('handleTreeEntryAction', treeEntry);
+            }
+          }
+        })
+        .catch((e) => {
+          flash('Error while loading the branch files. Please try again.');
+          throw e;
+        });
+      }
+    })
+    .catch((e) => {
+      flash('Error while loading the project data. Please try again.');
+      throw e;
+    });
+  }
+
+  next();
+});
+
+export default router;
diff --git a/app/assets/javascripts/ide/index.js b/app/assets/javascripts/ide/index.js
new file mode 100644
index 00000000000..a96bd339f51
--- /dev/null
+++ b/app/assets/javascripts/ide/index.js
@@ -0,0 +1,55 @@
+import Vue from 'vue';
+import { mapActions } from 'vuex';
+import { convertPermissionToBoolean } from '../lib/utils/common_utils';
+import ide from './components/ide.vue';
+
+import store from './stores';
+import router from './ide_router';
+import Translate from '../vue_shared/translate';
+import ContextualSidebar from '../contextual_sidebar';
+
+function initIde(el) {
+  if (!el) return null;
+
+  return new Vue({
+    el,
+    store,
+    router,
+    components: {
+      ide,
+    },
+    methods: {
+      ...mapActions([
+        'setInitialData',
+      ]),
+    },
+    created() {
+      const data = el.dataset;
+
+      this.setInitialData({
+        endpoints: {
+          rootEndpoint: data.url,
+          newMergeRequestUrl: data.newMergeRequestUrl,
+          rootUrl: data.rootUrl,
+        },
+        canCommit: convertPermissionToBoolean(data.canCommit),
+        onTopOfBranch: convertPermissionToBoolean(data.onTopOfBranch),
+        path: data.currentPath,
+        isRoot: convertPermissionToBoolean(data.root),
+        isInitialRoot: convertPermissionToBoolean(data.root),
+      });
+    },
+    render(createElement) {
+      return createElement('ide');
+    },
+  });
+}
+
+const ideElement = document.getElementById('ide');
+
+Vue.use(Translate);
+
+initIde(ideElement);
+
+const contextualSidebar = new ContextualSidebar();
+contextualSidebar.bindEvents();
diff --git a/app/assets/javascripts/ide/lib/common/disposable.js b/app/assets/javascripts/ide/lib/common/disposable.js
new file mode 100644
index 00000000000..84b29bdb600
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/common/disposable.js
@@ -0,0 +1,14 @@
+export default class Disposable {
+  constructor() {
+    this.disposers = new Set();
+  }
+
+  add(...disposers) {
+    disposers.forEach(disposer => this.disposers.add(disposer));
+  }
+
+  dispose() {
+    this.disposers.forEach(disposer => disposer.dispose());
+    this.disposers.clear();
+  }
+}
diff --git a/app/assets/javascripts/ide/lib/common/model.js b/app/assets/javascripts/ide/lib/common/model.js
new file mode 100644
index 00000000000..14d9fe4771e
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/common/model.js
@@ -0,0 +1,64 @@
+/* global monaco */
+import Disposable from './disposable';
+
+export default class Model {
+  constructor(monaco, file) {
+    this.monaco = monaco;
+    this.disposable = new Disposable();
+    this.file = file;
+    this.content = file.content !== '' ? file.content : file.raw;
+
+    this.disposable.add(
+      this.originalModel = this.monaco.editor.createModel(
+        this.file.raw,
+        undefined,
+        new this.monaco.Uri(null, null, `original/${this.file.path}`),
+      ),
+      this.model = this.monaco.editor.createModel(
+        this.content,
+        undefined,
+        new this.monaco.Uri(null, null, this.file.path),
+      ),
+    );
+
+    this.events = new Map();
+  }
+
+  get url() {
+    return this.model.uri.toString();
+  }
+
+  get language() {
+    return this.model.getModeId();
+  }
+
+  get eol() {
+    return this.model.getEOL() === '\n' ? 'LF' : 'CRLF';
+  }
+
+  get path() {
+    return this.file.path;
+  }
+
+  getModel() {
+    return this.model;
+  }
+
+  getOriginalModel() {
+    return this.originalModel;
+  }
+
+  onChange(cb) {
+    this.events.set(
+      this.path,
+      this.disposable.add(
+        this.model.onDidChangeContent(e => cb(this.model, e)),
+      ),
+    );
+  }
+
+  dispose() {
+    this.disposable.dispose();
+    this.events.clear();
+  }
+}
diff --git a/app/assets/javascripts/ide/lib/common/model_manager.js b/app/assets/javascripts/ide/lib/common/model_manager.js
new file mode 100644
index 00000000000..fd462252795
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/common/model_manager.js
@@ -0,0 +1,32 @@
+import Disposable from './disposable';
+import Model from './model';
+
+export default class ModelManager {
+  constructor(monaco) {
+    this.monaco = monaco;
+    this.disposable = new Disposable();
+    this.models = new Map();
+  }
+
+  hasCachedModel(path) {
+    return this.models.has(path);
+  }
+
+  addModel(file) {
+    if (this.hasCachedModel(file.path)) {
+      return this.models.get(file.path);
+    }
+
+    const model = new Model(this.monaco, file);
+    this.models.set(model.path, model);
+    this.disposable.add(model);
+
+    return model;
+  }
+
+  dispose() {
+    // dispose of all the models
+    this.disposable.dispose();
+    this.models.clear();
+  }
+}
diff --git a/app/assets/javascripts/ide/lib/decorations/controller.js b/app/assets/javascripts/ide/lib/decorations/controller.js
new file mode 100644
index 00000000000..0954b7973c4
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/decorations/controller.js
@@ -0,0 +1,43 @@
+export default class DecorationsController {
+  constructor(editor) {
+    this.editor = editor;
+    this.decorations = new Map();
+    this.editorDecorations = new Map();
+  }
+
+  getAllDecorationsForModel(model) {
+    if (!this.decorations.has(model.url)) return [];
+
+    const modelDecorations = this.decorations.get(model.url);
+    const decorations = [];
+
+    modelDecorations.forEach(val => decorations.push(...val));
+
+    return decorations;
+  }
+
+  addDecorations(model, decorationsKey, decorations) {
+    const decorationMap = this.decorations.get(model.url) || new Map();
+
+    decorationMap.set(decorationsKey, decorations);
+
+    this.decorations.set(model.url, decorationMap);
+
+    this.decorate(model);
+  }
+
+  decorate(model) {
+    const decorations = this.getAllDecorationsForModel(model);
+    const oldDecorations = this.editorDecorations.get(model.url) || [];
+
+    this.editorDecorations.set(
+      model.url,
+      this.editor.instance.deltaDecorations(oldDecorations, decorations),
+    );
+  }
+
+  dispose() {
+    this.decorations.clear();
+    this.editorDecorations.clear();
+  }
+}
diff --git a/app/assets/javascripts/ide/lib/diff/controller.js b/app/assets/javascripts/ide/lib/diff/controller.js
new file mode 100644
index 00000000000..dc0b1c95e59
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/diff/controller.js
@@ -0,0 +1,71 @@
+/* global monaco */
+import { throttle } from 'underscore';
+import DirtyDiffWorker from './diff_worker';
+import Disposable from '../common/disposable';
+
+export const getDiffChangeType = (change) => {
+  if (change.modified) {
+    return 'modified';
+  } else if (change.added) {
+    return 'added';
+  } else if (change.removed) {
+    return 'removed';
+  }
+
+  return '';
+};
+
+export const getDecorator = change => ({
+  range: new monaco.Range(
+    change.lineNumber,
+    1,
+    change.endLineNumber,
+    1,
+  ),
+  options: {
+    isWholeLine: true,
+    linesDecorationsClassName: `dirty-diff dirty-diff-${getDiffChangeType(change)}`,
+  },
+});
+
+export default class DirtyDiffController {
+  constructor(modelManager, decorationsController) {
+    this.disposable = new Disposable();
+    this.editorSimpleWorker = null;
+    this.modelManager = modelManager;
+    this.decorationsController = decorationsController;
+    this.dirtyDiffWorker = new DirtyDiffWorker();
+    this.throttledComputeDiff = throttle(this.computeDiff, 250);
+    this.decorate = this.decorate.bind(this);
+
+    this.dirtyDiffWorker.addEventListener('message', this.decorate);
+  }
+
+  attachModel(model) {
+    model.onChange(() => this.throttledComputeDiff(model));
+  }
+
+  computeDiff(model) {
+    this.dirtyDiffWorker.postMessage({
+      path: model.path,
+      originalContent: model.getOriginalModel().getValue(),
+      newContent: model.getModel().getValue(),
+    });
+  }
+
+  reDecorate(model) {
+    this.decorationsController.decorate(model);
+  }
+
+  decorate({ data }) {
+    const decorations = data.changes.map(change => getDecorator(change));
+    this.decorationsController.addDecorations(data.path, 'dirtyDiff', decorations);
+  }
+
+  dispose() {
+    this.disposable.dispose();
+
+    this.dirtyDiffWorker.removeEventListener('message', this.decorate);
+    this.dirtyDiffWorker.terminate();
+  }
+}
diff --git a/app/assets/javascripts/ide/lib/diff/diff.js b/app/assets/javascripts/ide/lib/diff/diff.js
new file mode 100644
index 00000000000..0e37f5c4704
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/diff/diff.js
@@ -0,0 +1,30 @@
+import { diffLines } from 'diff';
+
+// eslint-disable-next-line import/prefer-default-export
+export const computeDiff = (originalContent, newContent) => {
+  const changes = diffLines(originalContent, newContent);
+
+  let lineNumber = 1;
+  return changes.reduce((acc, change) => {
+    const findOnLine = acc.find(c => c.lineNumber === lineNumber);
+
+    if (findOnLine) {
+      Object.assign(findOnLine, change, {
+        modified: true,
+        endLineNumber: (lineNumber + change.count) - 1,
+      });
+    } else if ('added' in change || 'removed' in change) {
+      acc.push(Object.assign({}, change, {
+        lineNumber,
+        modified: undefined,
+        endLineNumber: (lineNumber + change.count) - 1,
+      }));
+    }
+
+    if (!change.removed) {
+      lineNumber += change.count;
+    }
+
+    return acc;
+  }, []);
+};
diff --git a/app/assets/javascripts/ide/lib/diff/diff_worker.js b/app/assets/javascripts/ide/lib/diff/diff_worker.js
new file mode 100644
index 00000000000..e74c4046330
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/diff/diff_worker.js
@@ -0,0 +1,10 @@
+import { computeDiff } from './diff';
+
+self.addEventListener('message', (e) => {
+  const data = e.data;
+
+  self.postMessage({
+    path: data.path,
+    changes: computeDiff(data.originalContent, data.newContent),
+  });
+});
diff --git a/app/assets/javascripts/ide/lib/editor.js b/app/assets/javascripts/ide/lib/editor.js
new file mode 100644
index 00000000000..51e202b9348
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/editor.js
@@ -0,0 +1,109 @@
+import DecorationsController from './decorations/controller';
+import DirtyDiffController from './diff/controller';
+import Disposable from './common/disposable';
+import ModelManager from './common/model_manager';
+import editorOptions from './editor_options';
+
+export default class Editor {
+  static create(monaco) {
+    this.editorInstance = new Editor(monaco);
+
+    return this.editorInstance;
+  }
+
+  constructor(monaco) {
+    this.monaco = monaco;
+    this.currentModel = null;
+    this.instance = null;
+    this.dirtyDiffController = null;
+    this.disposable = new Disposable();
+
+    this.disposable.add(
+      this.modelManager = new ModelManager(this.monaco),
+      this.decorationsController = new DecorationsController(this),
+    );
+
+    this.debouncedUpdate = _.debounce(() => {
+      this.updateDimensions();
+    }, 200);
+    window.addEventListener('resize', this.debouncedUpdate, false);
+  }
+
+  createInstance(domElement) {
+    if (!this.instance) {
+      this.disposable.add(
+        this.instance = this.monaco.editor.create(domElement, {
+          model: null,
+          readOnly: false,
+          contextmenu: true,
+          scrollBeyondLastLine: false,
+          minimap: {
+            enabled: false,
+          },
+        }),
+        this.dirtyDiffController = new DirtyDiffController(
+          this.modelManager, this.decorationsController,
+        ),
+      );
+    }
+  }
+
+  createModel(file) {
+    return this.modelManager.addModel(file);
+  }
+
+  attachModel(model) {
+    this.instance.setModel(model.getModel());
+    this.dirtyDiffController.attachModel(model);
+
+    this.currentModel = model;
+
+    this.instance.updateOptions(editorOptions.reduce((acc, obj) => {
+      Object.keys(obj).forEach((key) => {
+        Object.assign(acc, {
+          [key]: obj[key](model),
+        });
+      });
+      return acc;
+    }, {}));
+
+    this.dirtyDiffController.reDecorate(model);
+  }
+
+  clearEditor() {
+    if (this.instance) {
+      this.instance.setModel(null);
+    }
+  }
+
+  dispose() {
+    this.disposable.dispose();
+    window.removeEventListener('resize', this.debouncedUpdate);
+
+    // dispose main monaco instance
+    if (this.instance) {
+      this.instance = null;
+    }
+  }
+
+  updateDimensions() {
+    this.instance.layout();
+  }
+
+  setPosition({ lineNumber, column }) {
+    this.instance.revealPositionInCenter({
+      lineNumber,
+      column,
+    });
+    this.instance.setPosition({
+      lineNumber,
+      column,
+    });
+  }
+
+  onPositionChange(cb) {
+    this.disposable.add(
+      this.instance.onDidChangeCursorPosition(e => cb(this.instance, e)),
+    );
+  }
+}
diff --git a/app/assets/javascripts/ide/lib/editor_options.js b/app/assets/javascripts/ide/lib/editor_options.js
new file mode 100644
index 00000000000..701affc466e
--- /dev/null
+++ b/app/assets/javascripts/ide/lib/editor_options.js
@@ -0,0 +1,2 @@
+export default [{
+}];
diff --git a/app/assets/javascripts/ide/monaco_loader.js b/app/assets/javascripts/ide/monaco_loader.js
new file mode 100644
index 00000000000..af83a1ec0b4
--- /dev/null
+++ b/app/assets/javascripts/ide/monaco_loader.js
@@ -0,0 +1,11 @@
+import monacoContext from 'monaco-editor/dev/vs/loader';
+
+monacoContext.require.config({
+  paths: {
+    vs: `${__webpack_public_path__}monaco-editor/vs`, // eslint-disable-line camelcase
+  },
+});
+
+// eslint-disable-next-line no-underscore-dangle
+window.__monaco_context__ = monacoContext;
+export default monacoContext.require;
diff --git a/app/assets/javascripts/ide/services/index.js b/app/assets/javascripts/ide/services/index.js
new file mode 100644
index 00000000000..1fb24e93f2e
--- /dev/null
+++ b/app/assets/javascripts/ide/services/index.js
@@ -0,0 +1,47 @@
+import Vue from 'vue';
+import VueResource from 'vue-resource';
+import Api from '../../api';
+
+Vue.use(VueResource);
+
+export default {
+  getTreeData(endpoint) {
+    return Vue.http.get(endpoint, { params: { format: 'json' } });
+  },
+  getFileData(endpoint) {
+    return Vue.http.get(endpoint, { params: { format: 'json' } });
+  },
+  getRawFileData(file) {
+    if (file.tempFile) {
+      return Promise.resolve(file.content);
+    }
+
+    if (file.raw) {
+      return Promise.resolve(file.raw);
+    }
+
+    return Vue.http.get(file.rawPath, { params: { format: 'json' } })
+      .then(res => res.text());
+  },
+  getProjectData(namespace, project) {
+    return Api.project(`${namespace}/${project}`);
+  },
+  getBranchData(projectId, currentBranchId) {
+    return Api.branchSingle(projectId, currentBranchId);
+  },
+  createBranch(projectId, payload) {
+    const url = Api.buildUrl(Api.createBranchPath).replace(':id', projectId);
+
+    return Vue.http.post(url, payload);
+  },
+  commit(projectId, payload) {
+    return Api.commitMultiple(projectId, payload);
+  },
+  getTreeLastCommit(endpoint) {
+    return Vue.http.get(endpoint, {
+      params: {
+        format: 'json',
+      },
+    });
+  },
+};
diff --git a/app/assets/javascripts/ide/stores/actions.js b/app/assets/javascripts/ide/stores/actions.js
new file mode 100644
index 00000000000..c01046c8c76
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/actions.js
@@ -0,0 +1,179 @@
+import Vue from 'vue';
+import { visitUrl } from '../../lib/utils/url_utility';
+import flash from '../../flash';
+import service from '../services';
+import * as types from './mutation_types';
+
+export const redirectToUrl = (_, url) => visitUrl(url);
+
+export const setInitialData = ({ commit }, data) =>
+  commit(types.SET_INITIAL_DATA, data);
+
+export const closeDiscardPopup = ({ commit }) =>
+  commit(types.TOGGLE_DISCARD_POPUP, false);
+
+export const discardAllChanges = ({ commit, getters, dispatch }) => {
+  const changedFiles = getters.changedFiles;
+
+  changedFiles.forEach((file) => {
+    commit(types.DISCARD_FILE_CHANGES, file);
+
+    if (file.tempFile) {
+      dispatch('closeFile', { file, force: true });
+    }
+  });
+};
+
+export const closeAllFiles = ({ state, dispatch }) => {
+  state.openFiles.forEach(file => dispatch('closeFile', { file }));
+};
+
+export const toggleEditMode = (
+  { state, commit, getters, dispatch },
+  force = false,
+) => {
+  const changedFiles = getters.changedFiles;
+
+  if (changedFiles.length && !force) {
+    commit(types.TOGGLE_DISCARD_POPUP, true);
+  } else {
+    commit(types.TOGGLE_EDIT_MODE);
+    commit(types.TOGGLE_DISCARD_POPUP, false);
+    dispatch('toggleBlobView');
+
+    if (!state.editMode) {
+      dispatch('discardAllChanges');
+    }
+  }
+};
+
+export const toggleBlobView = ({ commit, state }) => {
+  if (state.editMode) {
+    commit(types.SET_EDIT_MODE);
+  } else {
+    commit(types.SET_PREVIEW_MODE);
+  }
+};
+
+export const setPanelCollapsedStatus = ({ commit }, { side, collapsed }) => {
+  if (side === 'left') {
+    commit(types.SET_LEFT_PANEL_COLLAPSED, collapsed);
+  } else {
+    commit(types.SET_RIGHT_PANEL_COLLAPSED, collapsed);
+  }
+};
+
+export const checkCommitStatus = ({ state }) =>
+  service
+    .getBranchData(state.currentProjectId, state.currentBranchId)
+    .then((data) => {
+      const { id } = data.commit;
+      const selectedBranch =
+        state.projects[state.currentProjectId].branches[state.currentBranchId];
+
+      if (selectedBranch.workingReference !== id) {
+        return true;
+      }
+
+      return false;
+    })
+    .catch(() => flash('Error checking branch data. Please try again.'));
+
+export const commitChanges = (
+  { commit, state, dispatch, getters },
+  { payload, newMr },
+) =>
+  service
+    .commit(state.currentProjectId, payload)
+    .then((data) => {
+      const { branch } = payload;
+      if (!data.short_id) {
+        flash(data.message);
+        return;
+      }
+
+      const selectedProject = state.projects[state.currentProjectId];
+      const lastCommit = {
+        commit_path: `${selectedProject.web_url}/commit/${data.id}`,
+        commit: {
+          message: data.message,
+          authored_date: data.committed_date,
+        },
+      };
+
+      flash(
+        `Your changes have been committed. Commit ${data.short_id} with ${
+          data.stats.additions
+        } additions, ${data.stats.deletions} deletions.`,
+        'notice',
+      );
+
+      if (newMr) {
+        dispatch(
+          'redirectToUrl',
+          `${
+            selectedProject.web_url
+          }/merge_requests/new?merge_request%5Bsource_branch%5D=${branch}`,
+        );
+      } else {
+        commit(types.SET_BRANCH_WORKING_REFERENCE, {
+          projectId: state.currentProjectId,
+          branchId: state.currentBranchId,
+          reference: data.id,
+        });
+
+        getters.changedFiles.forEach((entry) => {
+          commit(types.SET_LAST_COMMIT_DATA, {
+            entry,
+            lastCommit,
+          });
+        });
+
+        dispatch('discardAllChanges');
+        dispatch('closeAllFiles');
+
+        window.scrollTo(0, 0);
+      }
+    })
+    .catch(() => flash('Error committing changes. Please try again.'));
+
+export const createTempEntry = (
+  { state, dispatch },
+  { projectId, branchId, parent, name, type, content = '', base64 = false },
+) => {
+  const selectedParent = parent || state.trees[`${projectId}/${branchId}`];
+  if (type === 'tree') {
+    dispatch('createTempTree', {
+      projectId,
+      branchId,
+      parent: selectedParent,
+      name,
+    });
+  } else if (type === 'blob') {
+    dispatch('createTempFile', {
+      projectId,
+      branchId,
+      parent: selectedParent,
+      name,
+      base64,
+      content,
+    });
+  }
+};
+
+export const scrollToTab = () => {
+  Vue.nextTick(() => {
+    const tabs = document.getElementById('tabs');
+
+    if (tabs) {
+      const tabEl = tabs.querySelector('.active .repo-tab');
+
+      tabEl.focus();
+    }
+  });
+};
+
+export * from './actions/tree';
+export * from './actions/file';
+export * from './actions/project';
+export * from './actions/branch';
diff --git a/app/assets/javascripts/ide/stores/actions/branch.js b/app/assets/javascripts/ide/stores/actions/branch.js
new file mode 100644
index 00000000000..32bdf7fec22
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/actions/branch.js
@@ -0,0 +1,43 @@
+import service from '../../services';
+import flash from '../../../flash';
+import * as types from '../mutation_types';
+
+export const getBranchData = (
+  { commit, state, dispatch },
+  { projectId, branchId, force = false } = {},
+) => new Promise((resolve, reject) => {
+  if ((typeof state.projects[`${projectId}`] === 'undefined' ||
+        !state.projects[`${projectId}`].branches[branchId])
+        || force) {
+    service.getBranchData(`${projectId}`, branchId)
+      .then((data) => {
+        const { id } = data.commit;
+        commit(types.SET_BRANCH, { projectPath: `${projectId}`, branchName: branchId, branch: data });
+        commit(types.SET_BRANCH_WORKING_REFERENCE, { projectId, branchId, reference: id });
+        resolve(data);
+      })
+      .catch(() => {
+        flash('Error loading branch data. Please try again.');
+        reject(new Error(`Branch not loaded - ${projectId}/${branchId}`));
+      });
+  } else {
+    resolve(state.projects[`${projectId}`].branches[branchId]);
+  }
+});
+
+export const createNewBranch = ({ state, commit }, branch) => service.createBranch(
+  state.currentProjectId,
+  {
+    branch,
+    ref: state.currentBranchId,
+  },
+)
+.then(res => res.json())
+.then((data) => {
+  const branchName = data.name;
+  const url = location.href.replace(state.currentBranchId, branchName);
+
+  if (this.$router) this.$router.push(url);
+
+  commit(types.SET_CURRENT_BRANCH, branchName);
+});
diff --git a/app/assets/javascripts/ide/stores/actions/file.js b/app/assets/javascripts/ide/stores/actions/file.js
new file mode 100644
index 00000000000..0f27d5bf1c3
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/actions/file.js
@@ -0,0 +1,131 @@
+import { normalizeHeaders } from '../../../lib/utils/common_utils';
+import flash from '../../../flash';
+import service from '../../services';
+import * as types from '../mutation_types';
+import router from '../../ide_router';
+import {
+  findEntry,
+  setPageTitle,
+  createTemp,
+  findIndexOfFile,
+} from '../utils';
+
+export const closeFile = ({ commit, state, dispatch }, { file, force = false }) => {
+  if ((file.changed || file.tempFile) && !force) return;
+
+  const indexOfClosedFile = findIndexOfFile(state.openFiles, file);
+  const fileWasActive = file.active;
+
+  commit(types.TOGGLE_FILE_OPEN, file);
+  commit(types.SET_FILE_ACTIVE, { file, active: false });
+
+  if (state.openFiles.length > 0 && fileWasActive) {
+    const nextIndexToOpen = indexOfClosedFile === 0 ? 0 : indexOfClosedFile - 1;
+    const nextFileToOpen = state.openFiles[nextIndexToOpen];
+
+    dispatch('setFileActive', nextFileToOpen);
+  } else if (!state.openFiles.length) {
+    router.push(`/project/${file.projectId}/tree/${file.branchId}/`);
+  }
+
+  dispatch('getLastCommitData');
+};
+
+export const setFileActive = ({ commit, state, getters, dispatch }, file) => {
+  const currentActiveFile = getters.activeFile;
+
+  if (file.active) return;
+
+  if (currentActiveFile) {
+    commit(types.SET_FILE_ACTIVE, { file: currentActiveFile, active: false });
+  }
+
+  commit(types.SET_FILE_ACTIVE, { file, active: true });
+  dispatch('scrollToTab');
+
+  // reset hash for line highlighting
+  location.hash = '';
+
+  commit(types.SET_CURRENT_PROJECT, file.projectId);
+  commit(types.SET_CURRENT_BRANCH, file.branchId);
+};
+
+export const getFileData = ({ state, commit, dispatch }, file) => {
+  commit(types.TOGGLE_LOADING, file);
+
+  service.getFileData(file.url)
+    .then((res) => {
+      const pageTitle = decodeURI(normalizeHeaders(res.headers)['PAGE-TITLE']);
+
+      setPageTitle(pageTitle);
+
+      return res.json();
+    })
+    .then((data) => {
+      commit(types.SET_FILE_DATA, { data, file });
+      commit(types.TOGGLE_FILE_OPEN, file);
+      dispatch('setFileActive', file);
+      commit(types.TOGGLE_LOADING, file);
+    })
+    .catch(() => {
+      commit(types.TOGGLE_LOADING, file);
+      flash('Error loading file data. Please try again.');
+    });
+};
+
+export const getRawFileData = ({ commit, dispatch }, file) => service.getRawFileData(file)
+  .then((raw) => {
+    commit(types.SET_FILE_RAW_DATA, { file, raw });
+  })
+  .catch(() => flash('Error loading file content. Please try again.'));
+
+export const changeFileContent = ({ commit }, { file, content }) => {
+  commit(types.UPDATE_FILE_CONTENT, { file, content });
+};
+
+export const setFileLanguage = ({ state, commit }, { fileLanguage }) => {
+  commit(types.SET_FILE_LANGUAGE, { file: state.selectedFile, fileLanguage });
+};
+
+export const setFileEOL = ({ state, commit }, { eol }) => {
+  commit(types.SET_FILE_EOL, { file: state.selectedFile, eol });
+};
+
+export const setEditorPosition = ({ state, commit }, { editorRow, editorColumn }) => {
+  commit(types.SET_FILE_POSITION, { file: state.selectedFile, editorRow, editorColumn });
+};
+
+export const createTempFile = ({ state, commit, dispatch }, { projectId, branchId, parent, name, content = '', base64 = '' }) => {
+  const path = parent.path !== undefined ? parent.path : '';
+  // We need to do the replacement otherwise the web_url + file.url duplicate
+  const newUrl = `/${projectId}/blob/${branchId}/${path}${path ? '/' : ''}${name}`;
+  const file = createTemp({
+    projectId,
+    branchId,
+    name: name.replace(`${path}/`, ''),
+    path,
+    type: 'blob',
+    level: parent.level !== undefined ? parent.level + 1 : 0,
+    changed: true,
+    content,
+    base64,
+    url: newUrl,
+  });
+
+  if (findEntry(parent.tree, 'blob', file.name)) return flash(`The name "${file.name}" is already taken in this directory.`);
+
+  commit(types.CREATE_TMP_FILE, {
+    parent,
+    file,
+  });
+  commit(types.TOGGLE_FILE_OPEN, file);
+  dispatch('setFileActive', file);
+
+  if (!state.editMode && !file.base64) {
+    dispatch('toggleEditMode', true);
+  }
+
+  router.push(`/project${file.url}`);
+
+  return Promise.resolve(file);
+};
diff --git a/app/assets/javascripts/ide/stores/actions/project.js b/app/assets/javascripts/ide/stores/actions/project.js
new file mode 100644
index 00000000000..75e332090cb
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/actions/project.js
@@ -0,0 +1,25 @@
+import service from '../../services';
+import flash from '../../../flash';
+import * as types from '../mutation_types';
+
+// eslint-disable-next-line import/prefer-default-export
+export const getProjectData = (
+  { commit, state, dispatch },
+  { namespace, projectId, force = false } = {},
+) => new Promise((resolve, reject) => {
+  if (!state.projects[`${namespace}/${projectId}`] || force) {
+    service.getProjectData(namespace, projectId)
+    .then(res => res.data)
+    .then((data) => {
+      commit(types.SET_PROJECT, { projectPath: `${namespace}/${projectId}`, project: data });
+      if (!state.currentProjectId) commit(types.SET_CURRENT_PROJECT, `${namespace}/${projectId}`);
+      resolve(data);
+    })
+    .catch(() => {
+      flash('Error loading project data. Please try again.');
+      reject(new Error(`Project not loaded ${namespace}/${projectId}`));
+    });
+  } else {
+    resolve(state.projects[`${namespace}/${projectId}`]);
+  }
+});
diff --git a/app/assets/javascripts/ide/stores/actions/tree.js b/app/assets/javascripts/ide/stores/actions/tree.js
new file mode 100644
index 00000000000..25909400a75
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/actions/tree.js
@@ -0,0 +1,188 @@
+import { visitUrl } from '../../../lib/utils/url_utility';
+import { normalizeHeaders } from '../../../lib/utils/common_utils';
+import flash from '../../../flash';
+import service from '../../services';
+import * as types from '../mutation_types';
+import router from '../../ide_router';
+import {
+  setPageTitle,
+  findEntry,
+  createTemp,
+  createOrMergeEntry,
+} from '../utils';
+
+export const getTreeData = (
+  { commit, state, dispatch },
+  { endpoint, tree = null, projectId, branch, force = false } = {},
+) => new Promise((resolve, reject) => {
+  // We already have the base tree so we resolve immediately
+  if (!tree && state.trees[`${projectId}/${branch}`] && !force) {
+    resolve();
+  } else {
+    if (tree) commit(types.TOGGLE_LOADING, tree);
+    const selectedProject = state.projects[projectId];
+    // We are merging the web_url that we got on the project info with the endpoint
+    // we got on the tree entry, as both contain the projectId, we replace it in the tree endpoint
+    const completeEndpoint = selectedProject.web_url + (endpoint).replace(projectId, '');
+    if (completeEndpoint && (!tree || !tree.tempFile)) {
+      service.getTreeData(completeEndpoint)
+      .then((res) => {
+        const pageTitle = decodeURI(normalizeHeaders(res.headers)['PAGE-TITLE']);
+
+        setPageTitle(pageTitle);
+
+        return res.json();
+      })
+      .then((data) => {
+        if (!state.isInitialRoot) {
+          commit(types.SET_ROOT, data.path === '/');
+        }
+
+        dispatch('updateDirectoryData', { data, tree, projectId, branch });
+        const selectedTree = tree || state.trees[`${projectId}/${branch}`];
+
+        commit(types.SET_PARENT_TREE_URL, data.parent_tree_url);
+        commit(types.SET_LAST_COMMIT_URL, { tree: selectedTree, url: data.last_commit_path });
+        if (tree) commit(types.TOGGLE_LOADING, selectedTree);
+
+        const prevLastCommitPath = selectedTree.lastCommitPath;
+        if (prevLastCommitPath !== null) {
+          dispatch('getLastCommitData', selectedTree);
+        }
+        resolve(data);
+      })
+      .catch((e) => {
+        flash('Error loading tree data. Please try again.');
+        if (tree) commit(types.TOGGLE_LOADING, tree);
+        reject(e);
+      });
+    } else {
+      resolve();
+    }
+  }
+});
+
+export const toggleTreeOpen = ({ commit, dispatch }, { endpoint, tree }) => {
+  if (tree.opened) {
+    // send empty data to clear the tree
+    const data = { trees: [], blobs: [], submodules: [] };
+
+    dispatch('updateDirectoryData', { data, tree, projectId: tree.projectId, branchId: tree.branchId });
+  } else {
+    dispatch('getTreeData', { endpoint, tree, projectId: tree.projectId, branch: tree.branchId });
+  }
+
+  commit(types.TOGGLE_TREE_OPEN, tree);
+};
+
+export const handleTreeEntryAction = ({ commit, dispatch }, row) => {
+  if (row.type === 'tree') {
+    dispatch('toggleTreeOpen', {
+      endpoint: row.url,
+      tree: row,
+    });
+  } else if (row.type === 'submodule') {
+    commit(types.TOGGLE_LOADING, row);
+    visitUrl(row.url);
+  } else if (row.type === 'blob' && row.opened) {
+    dispatch('setFileActive', row);
+  } else {
+    dispatch('getFileData', row);
+  }
+};
+
+export const createTempTree = (
+  { state, commit, dispatch },
+  { projectId, branchId, parent, name },
+) => {
+  let selectedTree = parent;
+  const dirNames = name.replace(new RegExp(`^${state.path}/`), '').split('/');
+
+  dirNames.forEach((dirName) => {
+    const foundEntry = findEntry(selectedTree.tree, 'tree', dirName);
+
+    if (!foundEntry) {
+      const path = selectedTree.path !== undefined ? selectedTree.path : '';
+      const tmpEntry = createTemp({
+        projectId,
+        branchId,
+        name: dirName,
+        path,
+        type: 'tree',
+        level: selectedTree.level !== undefined ? selectedTree.level + 1 : 0,
+        tree: [],
+        url: `/${projectId}/blob/${branchId}/${path}${path ? '/' : ''}${dirName}`,
+      });
+
+      commit(types.CREATE_TMP_TREE, {
+        parent: selectedTree,
+        tmpEntry,
+      });
+      commit(types.TOGGLE_TREE_OPEN, tmpEntry);
+
+      router.push(`/project${tmpEntry.url}`);
+
+      selectedTree = tmpEntry;
+    } else {
+      selectedTree = foundEntry;
+    }
+  });
+};
+
+export const getLastCommitData = ({ state, commit, dispatch, getters }, tree = state) => {
+  if (!tree || tree.lastCommitPath === null || !tree.lastCommitPath) return;
+
+  service.getTreeLastCommit(tree.lastCommitPath)
+    .then((res) => {
+      const lastCommitPath = normalizeHeaders(res.headers)['MORE-LOGS-URL'] || null;
+
+      commit(types.SET_LAST_COMMIT_URL, { tree, url: lastCommitPath });
+
+      return res.json();
+    })
+    .then((data) => {
+      data.forEach((lastCommit) => {
+        const entry = findEntry(tree.tree, lastCommit.type, lastCommit.file_name);
+
+        if (entry) {
+          commit(types.SET_LAST_COMMIT_DATA, { entry, lastCommit });
+        }
+      });
+
+      dispatch('getLastCommitData', tree);
+    })
+    .catch(() => flash('Error fetching log data.'));
+};
+
+export const updateDirectoryData = (
+  { commit, state },
+  { data, tree, projectId, branch },
+) => {
+  if (!tree) {
+    const existingTree = state.trees[`${projectId}/${branch}`];
+    if (!existingTree) {
+      commit(types.CREATE_TREE, { treePath: `${projectId}/${branch}` });
+    }
+  }
+
+  const selectedTree = tree || state.trees[`${projectId}/${branch}`];
+  const level = selectedTree.level !== undefined ? selectedTree.level + 1 : 0;
+  const parentTreeUrl = data.parent_tree_url ? `${data.parent_tree_url}${data.path}` : state.endpoints.rootUrl;
+  const createEntry = (entry, type) => createOrMergeEntry({
+    tree: selectedTree,
+    projectId: `${projectId}`,
+    branchId: branch,
+    entry,
+    level,
+    type,
+    parentTreeUrl,
+  });
+
+  const formattedData = [
+    ...data.trees.map(t => createEntry(t, 'tree')),
+    ...data.submodules.map(m => createEntry(m, 'submodule')),
+    ...data.blobs.map(b => createEntry(b, 'blob')),
+  ];
+
+  commit(types.SET_DIRECTORY_DATA, { tree: selectedTree, data: formattedData });
+};
diff --git a/app/assets/javascripts/ide/stores/getters.js b/app/assets/javascripts/ide/stores/getters.js
new file mode 100644
index 00000000000..6b51ccff817
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/getters.js
@@ -0,0 +1,19 @@
+export const changedFiles = state => state.openFiles.filter(file => file.changed);
+
+export const activeFile = state => state.openFiles.find(file => file.active) || null;
+
+export const activeFileExtension = (state) => {
+  const file = activeFile(state);
+  return file ? `.${file.path.split('.').pop()}` : '';
+};
+
+export const canEditFile = (state) => {
+  const currentActiveFile = activeFile(state);
+
+  return state.canCommit &&
+         (currentActiveFile && !currentActiveFile.renderError && !currentActiveFile.binary);
+};
+
+export const addedFiles = state => changedFiles(state).filter(f => f.tempFile);
+
+export const modifiedFiles = state => changedFiles(state).filter(f => !f.tempFile);
diff --git a/app/assets/javascripts/ide/stores/index.js b/app/assets/javascripts/ide/stores/index.js
new file mode 100644
index 00000000000..6ac9bfd8189
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/index.js
@@ -0,0 +1,15 @@
+import Vue from 'vue';
+import Vuex from 'vuex';
+import state from './state';
+import * as actions from './actions';
+import * as getters from './getters';
+import mutations from './mutations';
+
+Vue.use(Vuex);
+
+export default new Vuex.Store({
+  state: state(),
+  actions,
+  mutations,
+  getters,
+});
diff --git a/app/assets/javascripts/ide/stores/mutation_types.js b/app/assets/javascripts/ide/stores/mutation_types.js
new file mode 100644
index 00000000000..4e3c10972ba
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/mutation_types.js
@@ -0,0 +1,45 @@
+export const SET_INITIAL_DATA = 'SET_INITIAL_DATA';
+export const TOGGLE_LOADING = 'TOGGLE_LOADING';
+export const SET_PARENT_TREE_URL = 'SET_PARENT_TREE_URL';
+export const SET_ROOT = 'SET_ROOT';
+export const SET_LAST_COMMIT_DATA = 'SET_LAST_COMMIT_DATA';
+export const SET_LEFT_PANEL_COLLAPSED = 'SET_LEFT_PANEL_COLLAPSED';
+export const SET_RIGHT_PANEL_COLLAPSED = 'SET_RIGHT_PANEL_COLLAPSED';
+
+// Project Mutation Types
+export const SET_PROJECT = 'SET_PROJECT';
+export const SET_CURRENT_PROJECT = 'SET_CURRENT_PROJECT';
+export const TOGGLE_PROJECT_OPEN = 'TOGGLE_PROJECT_OPEN';
+
+// Branch Mutation Types
+export const SET_BRANCH = 'SET_BRANCH';
+export const SET_BRANCH_WORKING_REFERENCE = 'SET_BRANCH_WORKING_REFERENCE';
+export const TOGGLE_BRANCH_OPEN = 'TOGGLE_BRANCH_OPEN';
+
+// Tree mutation types
+export const SET_DIRECTORY_DATA = 'SET_DIRECTORY_DATA';
+export const TOGGLE_TREE_OPEN = 'TOGGLE_TREE_OPEN';
+export const CREATE_TMP_TREE = 'CREATE_TMP_TREE';
+export const SET_LAST_COMMIT_URL = 'SET_LAST_COMMIT_URL';
+export const CREATE_TREE = 'CREATE_TREE';
+
+// File mutation types
+export const SET_FILE_DATA = 'SET_FILE_DATA';
+export const TOGGLE_FILE_OPEN = 'TOGGLE_FILE_OPEN';
+export const SET_FILE_ACTIVE = 'SET_FILE_ACTIVE';
+export const SET_FILE_RAW_DATA = 'SET_FILE_RAW_DATA';
+export const UPDATE_FILE_CONTENT = 'UPDATE_FILE_CONTENT';
+export const SET_FILE_LANGUAGE = 'SET_FILE_LANGUAGE';
+export const SET_FILE_POSITION = 'SET_FILE_POSITION';
+export const SET_FILE_EOL = 'SET_FILE_EOL';
+export const DISCARD_FILE_CHANGES = 'DISCARD_FILE_CHANGES';
+export const CREATE_TMP_FILE = 'CREATE_TMP_FILE';
+
+// Viewer mutation types
+export const SET_PREVIEW_MODE = 'SET_PREVIEW_MODE';
+export const SET_EDIT_MODE = 'SET_EDIT_MODE';
+export const TOGGLE_EDIT_MODE = 'TOGGLE_EDIT_MODE';
+export const TOGGLE_DISCARD_POPUP = 'TOGGLE_DISCARD_POPUP';
+
+export const SET_CURRENT_BRANCH = 'SET_CURRENT_BRANCH';
+
diff --git a/app/assets/javascripts/ide/stores/mutations.js b/app/assets/javascripts/ide/stores/mutations.js
new file mode 100644
index 00000000000..2fed9019cb6
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/mutations.js
@@ -0,0 +1,65 @@
+import * as types from './mutation_types';
+import projectMutations from './mutations/project';
+import fileMutations from './mutations/file';
+import treeMutations from './mutations/tree';
+import branchMutations from './mutations/branch';
+
+export default {
+  [types.SET_INITIAL_DATA](state, data) {
+    Object.assign(state, data);
+  },
+  [types.SET_PREVIEW_MODE](state) {
+    Object.assign(state, {
+      currentBlobView: 'repo-preview',
+    });
+  },
+  [types.SET_EDIT_MODE](state) {
+    Object.assign(state, {
+      currentBlobView: 'repo-editor',
+    });
+  },
+  [types.TOGGLE_LOADING](state, entry) {
+    Object.assign(entry, {
+      loading: !entry.loading,
+    });
+  },
+  [types.TOGGLE_EDIT_MODE](state) {
+    Object.assign(state, {
+      editMode: !state.editMode,
+    });
+  },
+  [types.TOGGLE_DISCARD_POPUP](state, discardPopupOpen) {
+    Object.assign(state, {
+      discardPopupOpen,
+    });
+  },
+  [types.SET_ROOT](state, isRoot) {
+    Object.assign(state, {
+      isRoot,
+      isInitialRoot: isRoot,
+    });
+  },
+  [types.SET_LEFT_PANEL_COLLAPSED](state, collapsed) {
+    Object.assign(state, {
+      leftPanelCollapsed: collapsed,
+    });
+  },
+  [types.SET_RIGHT_PANEL_COLLAPSED](state, collapsed) {
+    Object.assign(state, {
+      rightPanelCollapsed: collapsed,
+    });
+  },
+  [types.SET_LAST_COMMIT_DATA](state, { entry, lastCommit }) {
+    Object.assign(entry.lastCommit, {
+      id: lastCommit.commit.id,
+      url: lastCommit.commit_path,
+      message: lastCommit.commit.message,
+      author: lastCommit.commit.author_name,
+      updatedAt: lastCommit.commit.authored_date,
+    });
+  },
+  ...projectMutations,
+  ...fileMutations,
+  ...treeMutations,
+  ...branchMutations,
+};
diff --git a/app/assets/javascripts/ide/stores/mutations/branch.js b/app/assets/javascripts/ide/stores/mutations/branch.js
new file mode 100644
index 00000000000..04b9582c5bb
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/mutations/branch.js
@@ -0,0 +1,28 @@
+import * as types from '../mutation_types';
+
+export default {
+  [types.SET_CURRENT_BRANCH](state, currentBranchId) {
+    Object.assign(state, {
+      currentBranchId,
+    });
+  },
+  [types.SET_BRANCH](state, { projectPath, branchName, branch }) {
+    // Add client side properties
+    Object.assign(branch, {
+      treeId: `${projectPath}/${branchName}`,
+      active: true,
+      workingReference: '',
+    });
+
+    Object.assign(state.projects[projectPath], {
+      branches: {
+        [branchName]: branch,
+      },
+    });
+  },
+  [types.SET_BRANCH_WORKING_REFERENCE](state, { projectId, branchId, reference }) {
+    Object.assign(state.projects[projectId].branches[branchId], {
+      workingReference: reference,
+    });
+  },
+};
diff --git a/app/assets/javascripts/ide/stores/mutations/file.js b/app/assets/javascripts/ide/stores/mutations/file.js
new file mode 100644
index 00000000000..5f3655b0092
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/mutations/file.js
@@ -0,0 +1,74 @@
+import * as types from '../mutation_types';
+import { findIndexOfFile } from '../utils';
+
+export default {
+  [types.SET_FILE_ACTIVE](state, { file, active }) {
+    Object.assign(file, {
+      active,
+    });
+
+    Object.assign(state, {
+      selectedFile: file,
+    });
+  },
+  [types.TOGGLE_FILE_OPEN](state, file) {
+    Object.assign(file, {
+      opened: !file.opened,
+    });
+
+    if (file.opened) {
+      state.openFiles.push(file);
+    } else {
+      state.openFiles.splice(findIndexOfFile(state.openFiles, file), 1);
+    }
+  },
+  [types.SET_FILE_DATA](state, { data, file }) {
+    Object.assign(file, {
+      blamePath: data.blame_path,
+      commitsPath: data.commits_path,
+      permalink: data.permalink,
+      rawPath: data.raw_path,
+      binary: data.binary,
+      html: data.html,
+      renderError: data.render_error,
+    });
+  },
+  [types.SET_FILE_RAW_DATA](state, { file, raw }) {
+    Object.assign(file, {
+      raw,
+    });
+  },
+  [types.UPDATE_FILE_CONTENT](state, { file, content }) {
+    const changed = content !== file.raw;
+
+    Object.assign(file, {
+      content,
+      changed,
+    });
+  },
+  [types.SET_FILE_LANGUAGE](state, { file, fileLanguage }) {
+    Object.assign(file, {
+      fileLanguage,
+    });
+  },
+  [types.SET_FILE_EOL](state, { file, eol }) {
+    Object.assign(file, {
+      eol,
+    });
+  },
+  [types.SET_FILE_POSITION](state, { file, editorRow, editorColumn }) {
+    Object.assign(file, {
+      editorRow,
+      editorColumn,
+    });
+  },
+  [types.DISCARD_FILE_CHANGES](state, file) {
+    Object.assign(file, {
+      content: '',
+      changed: false,
+    });
+  },
+  [types.CREATE_TMP_FILE](state, { file, parent }) {
+    parent.tree.push(file);
+  },
+};
diff --git a/app/assets/javascripts/ide/stores/mutations/project.js b/app/assets/javascripts/ide/stores/mutations/project.js
new file mode 100644
index 00000000000..2816562a919
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/mutations/project.js
@@ -0,0 +1,23 @@
+import * as types from '../mutation_types';
+
+export default {
+  [types.SET_CURRENT_PROJECT](state, currentProjectId) {
+    Object.assign(state, {
+      currentProjectId,
+    });
+  },
+  [types.SET_PROJECT](state, { projectPath, project }) {
+    // Add client side properties
+    Object.assign(project, {
+      tree: [],
+      branches: {},
+      active: true,
+    });
+
+    Object.assign(state, {
+      projects: Object.assign({}, state.projects, {
+        [projectPath]: project,
+      }),
+    });
+  },
+};
diff --git a/app/assets/javascripts/ide/stores/mutations/tree.js b/app/assets/javascripts/ide/stores/mutations/tree.js
new file mode 100644
index 00000000000..4fe438ab465
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/mutations/tree.js
@@ -0,0 +1,36 @@
+import * as types from '../mutation_types';
+
+export default {
+  [types.TOGGLE_TREE_OPEN](state, tree) {
+    Object.assign(tree, {
+      opened: !tree.opened,
+    });
+  },
+  [types.CREATE_TREE](state, { treePath }) {
+    Object.assign(state, {
+      trees: Object.assign({}, state.trees, {
+        [treePath]: {
+          tree: [],
+        },
+      }),
+    });
+  },
+  [types.SET_DIRECTORY_DATA](state, { data, tree }) {
+    Object.assign(tree, {
+      tree: data,
+    });
+  },
+  [types.SET_PARENT_TREE_URL](state, url) {
+    Object.assign(state, {
+      parentTreeUrl: url,
+    });
+  },
+  [types.SET_LAST_COMMIT_URL](state, { tree = state, url }) {
+    Object.assign(tree, {
+      lastCommitPath: url,
+    });
+  },
+  [types.CREATE_TMP_TREE](state, { parent, tmpEntry }) {
+    parent.tree.push(tmpEntry);
+  },
+};
diff --git a/app/assets/javascripts/ide/stores/state.js b/app/assets/javascripts/ide/stores/state.js
new file mode 100644
index 00000000000..539e382830f
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/state.js
@@ -0,0 +1,22 @@
+export default () => ({
+  canCommit: false,
+  currentProjectId: '',
+  currentBranchId: '',
+  currentBlobView: 'repo-editor',
+  discardPopupOpen: false,
+  editMode: true,
+  endpoints: {},
+  isRoot: false,
+  isInitialRoot: false,
+  lastCommitPath: '',
+  loading: false,
+  onTopOfBranch: false,
+  openFiles: [],
+  selectedFile: null,
+  path: '',
+  parentTreeUrl: '',
+  trees: {},
+  projects: {},
+  leftPanelCollapsed: false,
+  rightPanelCollapsed: true,
+});
diff --git a/app/assets/javascripts/ide/stores/utils.js b/app/assets/javascripts/ide/stores/utils.js
new file mode 100644
index 00000000000..29e3ab5d040
--- /dev/null
+++ b/app/assets/javascripts/ide/stores/utils.js
@@ -0,0 +1,175 @@
+export const dataStructure = () => ({
+  id: '',
+  key: '',
+  type: '',
+  projectId: '',
+  branchId: '',
+  name: '',
+  url: '',
+  path: '',
+  level: 0,
+  tempFile: false,
+  icon: '',
+  tree: [],
+  loading: false,
+  opened: false,
+  active: false,
+  changed: false,
+  lastCommitPath: '',
+  lastCommit: {
+    id: '',
+    url: '',
+    message: '',
+    updatedAt: '',
+    author: '',
+  },
+  tree_url: '',
+  blamePath: '',
+  commitsPath: '',
+  permalink: '',
+  rawPath: '',
+  binary: false,
+  html: '',
+  raw: '',
+  content: '',
+  parentTreeUrl: '',
+  renderError: false,
+  base64: false,
+  editorRow: 1,
+  editorColumn: 1,
+  fileLanguage: '',
+  eol: '',
+});
+
+export const decorateData = (entity) => {
+  const {
+    id,
+    projectId,
+    branchId,
+    type,
+    url,
+    name,
+    icon,
+    tree_url,
+    path,
+    renderError,
+    content = '',
+    tempFile = false,
+    active = false,
+    opened = false,
+    changed = false,
+    parentTreeUrl = '',
+    level = 0,
+    base64 = false,
+  } = entity;
+
+  return {
+    ...dataStructure(),
+    id,
+    projectId,
+    branchId,
+    key: `${name}-${type}-${id}`,
+    type,
+    name,
+    url,
+    tree_url,
+    path,
+    level,
+    tempFile,
+    icon: `fa-${icon}`,
+    opened,
+    active,
+    parentTreeUrl,
+    changed,
+    renderError,
+    content,
+    base64,
+  };
+};
+
+/*
+  Takes the multi-dimensional tree and returns a flattened array.
+  This allows for the table to recursively render the table rows but keeps the data
+  structure nested to make it easier to add new files/directories.
+*/
+export const treeList = (state, treeId) => {
+  const baseTree = state.trees[treeId];
+  if (baseTree) {
+    const mapTree = arr => (!arr.tree || !arr.tree.length ?
+                            [] : _.map(arr.tree, a => [a, mapTree(a)]));
+
+    return _.chain(baseTree.tree)
+      .map(arr => [arr, mapTree(arr)])
+      .flatten()
+      .value();
+  }
+  return [];
+};
+
+export const getTree = state => (namespace, projectId, branch) => state.trees[`${namespace}/${projectId}/${branch}`];
+
+export const getTreeEntry = (store, treeId, path) => {
+  const fileList = treeList(store.state, treeId);
+  return fileList ? fileList.find(file => file.path === path) : null;
+};
+
+export const findEntry = (tree, type, name) => tree.find(
+  f => f.type === type && f.name === name,
+);
+
+export const findIndexOfFile = (state, file) => state.findIndex(f => f.path === file.path);
+
+export const setPageTitle = (title) => {
+  document.title = title;
+};
+
+export const createTemp = ({
+  projectId, branchId, name, path, type, level, changed, content, base64, url,
+}) => {
+  const treePath = path ? `${path}/${name}` : name;
+
+  return decorateData({
+    id: new Date().getTime().toString(),
+    projectId,
+    branchId,
+    name,
+    type,
+    tempFile: true,
+    path: treePath,
+    icon: type === 'tree' ? 'folder' : 'file-text-o',
+    changed,
+    content,
+    parentTreeUrl: '',
+    level,
+    base64,
+    renderError: base64,
+    url,
+  });
+};
+
+export const createOrMergeEntry = ({ tree,
+                                     projectId,
+                                     branchId,
+                                     entry,
+                                     type,
+                                     parentTreeUrl,
+                                     level }) => {
+  const found = findEntry(tree.tree || tree, type, entry.name);
+
+  if (found) {
+    return Object.assign({}, found, {
+      id: entry.id,
+      url: entry.url,
+      tempFile: false,
+    });
+  }
+
+  return decorateData({
+    ...entry,
+    projectId,
+    branchId,
+    type,
+    parentTreeUrl,
+    level,
+  });
+};