Added explorer

2017-07-31 10:04:01 +01:00 · 2017-07-31 10:04:01 +01:00 · 0c27a8337a
commit 0c27a8337a
parent c07fc7135e
37 changed files with 719 additions and 290 deletions
--- a/.gitignore
+++ b/.gitignore
@ -5,3 +5,4 @@ dist/
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+.vscode
--- a/src/assets/fonts/RobotoMono-Bold.woff
+++ b/src/assets/fonts/RobotoMono-Bold.woff
--- a/src/assets/fonts/RobotoMono-Regular.woff
+++ b/src/assets/fonts/RobotoMono-Regular.woff
--- a/src/assets/fonts/inconsolata-bold.woff
+++ b/src/assets/fonts/inconsolata-bold.woff
--- a/src/assets/fonts/inconsolata.woff
+++ b/src/assets/fonts/inconsolata.woff
--- a/src/components/ButtonBar.vue
+++ b/src/components/ButtonBar.vue
@ -20,17 +20,15 @@
 </template>

 <script>
-import { mapState, mapActions } from 'vuex';
+import { mapState, mapMutations } from 'vuex';

 export default {
  computed: mapState('layout', [
    'showNavigationBar',
-    'showEditor',
    'showSidePreview',
-    'showSideBar',
    'showStatusBar',
  ]),
-  methods: mapActions('layout', [
+  methods: mapMutations('layout', [
    'toggleNavigationBar',
    'toggleEditor',
    'toggleSidePreview',
@ -61,7 +59,6 @@ export default {
  width: 26px;
  height: 26px;
  padding: 2px;
-  border-radius: 3px;
  margin: 3px 0;

  &:hover {
--- a/src/components/Editor.vue
+++ b/src/components/Editor.vue
@ -1,16 +1,16 @@
 <template>
  <div class="editor">
-    <pre class="editor__inner markdown-highlighting" :style="{ 'padding-left': editorPadding + 'px', 'padding-right': editorPadding + 'px' }"></pre>
+    <pre class="editor__inner markdown-highlighting" :style="{'padding-left': styles.editorPadding + 'px', 'padding-right': styles.editorPadding + 'px'}"></pre>
  </div>
 </template>


 <script>
-import { mapState } from 'vuex';
+import { mapGetters } from 'vuex';

 export default {
-  computed: mapState('layout', [
-    'editorPadding',
+  computed: mapGetters('layout', [
+    'styles',
  ]),
 };
 </script>
--- a/src/components/Explorer.vue
+++ b/src/components/Explorer.vue
@ -1,18 +1,122 @@
 <template>
-  <div class="explorer">
+  <div class="explorer flex flex--column">
    <div class="side-title">
-      <div class="side-title__text">
-        Explorer
-      </div>
+      <button class="side-title__button side-title__button--right button" @click="toggleExplorer(false)">
+        <icon-close></icon-close>
+      </button>
+      <button class="side-title__button button" @click="newItem()">
+        <icon-file-plus></icon-file-plus>
+      </button>
+      <button class="side-title__button button" @click="newItem(true)">
+        <icon-folder-plus></icon-folder-plus>
+      </button>
+      <button class="side-title__button button" @click="editItem()">
+        <icon-pen></icon-pen>
+      </button>
+      <button class="side-title__button button" @click="deleteItem()">
+        <icon-delete></icon-delete>
+      </button>
+    </div>
+    <div class="explorer__tree" :class="{'explorer__tree--new-item': !newChildNode.isNil}" tabindex="0">
+      <explorer-node :node="rootNode" :depth="0"></explorer-node>
    </div>
  </div>
 </template>

 <script>
+import { mapState, mapGetters, mapMutations } from 'vuex';
+import ExplorerNode from './ExplorerNode';
+import emptyFile from '../data/emptyFile';
+import emptyFolder from '../data/emptyFolder';
+
 export default {
+  components: {
+    ExplorerNode,
+  },
+  computed: {
+    ...mapState('explorer', [
+      'newChildNode',
+    ]),
+    ...mapGetters('explorer', [
+      'rootNode',
+    ]),
+  },
+  methods: {
+    ...mapMutations('explorer', [
+      'setSelectedId',
+    ]),
+    ...mapMutations('layout', [
+      'toggleExplorer',
+    ]),
+    newItem(isFolder) {
+      const parentId = this.$store.getters['explorer/selectedNodeFolder'].item.id;
+      this.$store.dispatch('explorer/openNode', parentId);
+      this.$store.commit('explorer/setNewItem', {
+        ...isFolder ? emptyFolder() : emptyFile(),
+        parentId,
+      });
+    },
+    editItem() {
+      const selectNode = this.$store.getters['explorer/selectedNode'];
+      this.$store.commit('explorer/setEditingId', selectNode.item.id);
+    },
+    deleteItem() {
+      // const selectNode = this.$store.getters['explorer/selectedNode'];
+      // switch (this.node.item.type) {
+      //   case 'file':
+      //   default:
+      //     this.$store.commit('files/setCurrentId', id);
+      //     break;
+      //   case 'folder':
+      //     this.$store.commit('explorer/toggleOpenNode', id);
+      //     break;
+      // }
+    },
+  },
+  created() {
+    this.$store.watch(
+      () => this.$store.getters['files/current'].id,
+      (currentFileId) => {
+        this.setSelectedId(currentFileId);
+      }, {
+        immediate: true,
+      });
+  },
 };
 </script>

 <style lang="scss">
-@import 'common/variables.scss';
+.explorer,
+.explorer__tree {
+  height: 100%;
+}
+
+.side-title {
+  height: 44px;
+  line-height: 44px;
+  padding: 4px 8px 0;
+  background-color: rgba(0, 0, 0, 0.1);
+}
+
+.side-title__button {
+  width: 36px;
+  padding: 6px;
+  display: inline-block;
+  background-color: transparent;
+  opacity: 0.75;
+
+  /* prevent from seeing wrapped buttons */
+  margin-bottom: 20px;
+
+  &:active,
+  &:focus,
+  &:hover {
+    opacity: 1;
+    background-color: rgba(0, 0, 0, 0.1);
+  }
+}
+
+.side-title__button--right {
+  float: right;
+}
 </style>
--- a/src/components/ExplorerItem.vue
+++ b/src/components/ExplorerItem.vue
@ -1,13 +0,0 @@
-<template>
-  <div class="explorer-item">
-  </div>
-</template>
-
-<script>
-export default {
-};
-</script>
-
-<style lang="scss">
-@import 'common/variables.scss';
-</style>
--- a/src/components/ExplorerNode.vue
+++ b/src/components/ExplorerNode.vue
@ -0,0 +1,172 @@
+<template>
+  <div class="explorer-node" :class="{'explorer-node--selected': selected, 'explorer-node--open': open}">
+    <div v-if="editing" class="explorer-node__item-editor" :class="['explorer-node__item-editor--' + node.item.type]" :style="{'padding-left': leftPadding}">
+      <input type="text" class="text-input" v-focus @blur="submitEdit()" @keyup.enter="submitEdit()" @keyup.esc="submitEdit(true)" v-model="editingNodeName">
+    </div>
+    <div v-else-if="!node.isRoot" class="explorer-node__item" :class="['explorer-node__item--' + node.item.type]" :style="{'padding-left': leftPadding}" @click="select(node.item.id)">
+      {{node.item.name}}
+    </div>
+    <div v-if="node.isFolder && open">
+      <explorer-node v-for="node in node.folders" :key="node.item.id" :node="node" :depth="depth + 1"></explorer-node>
+      <div v-if="newChild" class="explorer-node__new-child" :class="['explorer-node__new-child--' + newChild.item.type]" :style="{'padding-left': childLeftPadding}">
+        <input type="text" class="text-input" v-focus @blur="submitNewChild()" @keyup.enter="submitNewChild()" @keyup.esc="submitNewChild(true)" v-model.trim="newChildName">
+      </div>
+      <explorer-node v-for="node in node.files" :key="node.item.id" :node="node" :depth="depth + 1"></explorer-node>
+    </div>
+  </div>
+</template>
+
+<script>
+import utils from '../services/utils';
+import defaultContent from '../data/defaultContent.md';
+
+export default {
+  name: 'explorer-node',
+  props: ['node', 'depth'],
+  directives: {
+    focus: {
+      inserted(el) {
+        el.focus();
+      },
+    },
+  },
+  data: () => ({
+    editingValue: '',
+  }),
+  computed: {
+    leftPadding() {
+      return `${this.depth * 15}px`;
+    },
+    childLeftPadding() {
+      return `${(this.depth + 1) * 15}px`;
+    },
+    selected() {
+      return this.$store.getters['explorer/selectedNode'] === this.node;
+    },
+    editing() {
+      return this.$store.getters['explorer/editingNode'] === this.node;
+    },
+    open() {
+      return this.$store.state.explorer.openNodes[this.node.item.id] || this.node.isRoot;
+    },
+    newChild() {
+      return this.$store.getters['explorer/newChildNodeParent'] === this.node
+        && this.$store.state.explorer.newChildNode;
+    },
+    newChildName: {
+      get() {
+        return this.$store.state.explorer.newChildNode.item.name;
+      },
+      set(value) {
+        this.$store.commit('explorer/setNewItemName', value && value.slice(0, 250));
+      },
+    },
+    editingNodeName: {
+      get() {
+        return this.$store.getters['explorer/editingNode'].item.name;
+      },
+      set(value) {
+        this.editingValue = value.trim();
+      },
+    },
+  },
+  methods: {
+    select(id) {
+      this.$store.commit('explorer/setSelectedId', id);
+      if (this.node.isFolder) {
+        this.$store.commit('explorer/toggleOpenNode', id);
+      } else {
+        this.$store.commit('files/setCurrentId', id);
+      }
+    },
+    submitNewChild(cancel) {
+      const newChildNode = this.$store.state.explorer.newChildNode;
+      if (!cancel && newChildNode.item.name) {
+        const id = utils.uid();
+        if (newChildNode.isFolder) {
+          this.$store.commit('folders/setItem', {
+            ...newChildNode.item,
+            id,
+          });
+        } else {
+          const contentId = utils.uid();
+          this.$store.commit('contents/setItem', {
+            id: contentId,
+            text: defaultContent,
+          });
+          this.$store.commit('files/setItem', {
+            ...newChildNode.item,
+            id,
+            contentId,
+          });
+        }
+        this.select(id);
+      }
+      this.$store.commit('explorer/setNewItem', null);
+    },
+    submitEdit(cancel) {
+      const id = this.$store.getters['explorer/editingNode'].item.id;
+      const value = this.editingValue;
+      if (!cancel && id && value) {
+        this.$store.commit('files/patchItem', {
+          id,
+          name: value.slice(0, 250),
+        });
+      }
+      this.$store.commit('explorer/setEditingId', null);
+    },
+  },
+};
+</script>
+
+<style lang="scss">
+$item-font-size: 14px;
+
+.explorer-node__item {
+  cursor: pointer;
+  font-size: $item-font-size;
+  overflow: hidden;
+  white-space: nowrap;
+  text-overflow: ellipsis;
+
+  .explorer-node--selected > & {
+    background-color: rgba(0, 0, 0, 0.2);
+
+    .explorer__tree:focus & {
+      background-color: #39f;
+      color: #fff;
+    }
+  }
+
+  .explorer__tree--new-item & {
+    opacity: 0.33;
+  }
+}
+
+.explorer-node__item--folder,
+.explorer-node__item-editor--folder,
+.explorer-node__new-child--folder {
+  &::before {
+    content: '▸';
+    position: absolute;
+    margin-left: -13px;
+
+    .explorer-node--open > & {
+      content: '▾';
+    }
+  }
+}
+
+$new-child-height: 25px;
+
+.explorer-node__item-editor,
+.explorer-node__new-child {
+  padding: 1px 10px;
+
+  .text-input {
+    font-size: $item-font-size;
+    padding: 2px;
+    height: $new-child-height;
+  }
+}
+</style>
--- a/src/components/Layout.vue
+++ b/src/components/Layout.vue
@ -1,29 +1,29 @@
 <template>
  <div class="layout">
    <div class="layout__panel flex flex--row">
-      <div class="layout__panel layout__panel--explorer" v-show="showExplorer" :style="{ width: explorerWidth + 'px' }">
+      <div class="layout__panel layout__panel--explorer" v-show="styles.showExplorer" :style="{ width: constants.explorerWidth + 'px' }">
        <explorer></explorer>
      </div>
-      <div class="layout__panel flex flex--column" :style="{ width: innerWidth + 'px' }">
-        <div class="layout__panel layout__panel--navigation-bar" v-show="showNavigationBar || !showEditor" :style="{ height: navigationBarHeight + 'px' }">
+      <div class="layout__panel flex flex--column" :style="{ width: styles.innerWidth + 'px' }">
+        <div class="layout__panel layout__panel--navigation-bar" v-show="styles.showNavigationBar" :style="{ height: constants.navigationBarHeight + 'px' }">
          <navigation-bar></navigation-bar>
        </div>
-        <div class="layout__panel flex flex--row" :style="{ height: innerHeight + 'px' }">
-          <div class="layout__panel layout__panel--editor" v-show="showEditor" :style="{ width: editorWidth + 'px', 'font-size': fontSize + 'px' }">
+        <div class="layout__panel flex flex--row" :style="{ height: styles.innerHeight + 'px' }">
+          <div class="layout__panel layout__panel--editor" v-show="styles.showEditor" :style="{ width: styles.editorWidth + 'px', 'font-size': styles.fontSize + 'px' }">
            <editor></editor>
          </div>
-          <div class="layout__panel layout__panel--button-bar" v-show="showEditor" :style="{ width: buttonBarWidth + 'px' }">
+          <div class="layout__panel layout__panel--button-bar" v-show="styles.showEditor" :style="{ width: constants.buttonBarWidth + 'px' }">
            <button-bar></button-bar>
          </div>
-          <div class="layout__panel layout__panel--preview" v-show="showSidePreview || !showEditor" :style="{ width: previewWidth + 'px', 'font-size': fontSize + 'px' }">
+          <div class="layout__panel layout__panel--preview" v-show="styles.showPreview" :style="{ width: styles.previewWidth + 'px', 'font-size': styles.fontSize + 'px' }">
            <preview></preview>
          </div>
        </div>
-        <div class="layout__panel layout__panel--status-bar" v-show="showStatusBar" :style="{ height: statusBarHeight + 'px' }">
+        <div class="layout__panel layout__panel--status-bar" v-show="styles.showStatusBar" :style="{ height: constants.statusBarHeight + 'px' }">
          <status-bar></status-bar>
        </div>
      </div>
-      <div class="layout__panel layout__panel--side-bar" v-show="showSideBar" :style="{ width: sideBarWidth + 'px' }">
+      <div class="layout__panel layout__panel--side-bar" v-show="styles.showSideBar" :style="{ width: constants.sideBarWidth + 'px' }">
        <side-bar></side-bar>
      </div>
    </div>
@ -31,7 +31,7 @@
 </template>

 <script>
-import { mapState, mapActions } from 'vuex';
+import { mapState, mapGetters, mapMutations } from 'vuex';
 import NavigationBar from './NavigationBar';
 import ButtonBar from './ButtonBar';
 import StatusBar from './StatusBar';
@ -40,7 +40,6 @@ import SideBar from './SideBar';
 import Editor from './Editor';
 import Preview from './Preview';
 import editorSvc from '../services/editorSvc';
-import constants from '../services/constants';

 export default {
  components: {
@ -52,33 +51,23 @@ export default {
    Editor,
    Preview,
  },
-  computed: mapState('layout', {
-    explorerWidth: 'explorerWidth',
-    sideBarWidth: 'sideBarWidth',
-    navigationBarHeight: 'navigationBarHeight',
-    buttonBarWidth: 'buttonBarWidth',
-    statusBarHeight: 'statusBarHeight',
-    showEditor: 'showEditor',
-    showSidePreview: 'showSidePreview',
-    showNavigationBar: 'showNavigationBar',
-    showStatusBar: 'showStatusBar',
-    showSideBar: 'showSideBar',
-    showExplorer: 'showExplorer',
-    fontSize: 'fontSize',
-    innerWidth: 'innerWidth',
-    innerHeight: 'innerHeight',
-    previewWidth: 'previewWidth',
-    editorWidth: 'editorWidth',
-  }),
+  computed: {
+    ...mapState('layout', [
+      'constants',
+    ]),
+    ...mapGetters('layout', [
+      'styles',
+    ]),
+  },
  methods: {
-    ...mapActions('layout', [
-      'updateStyle',
+    ...mapMutations('layout', [
+      'updateBodySize',
    ]),
    saveSelection: () => editorSvc.saveSelection(true),
  },
  created() {
-    this.updateStyle();
-    window.addEventListener('resize', this.updateStyle);
+    this.updateBodySize();
+    window.addEventListener('resize', this.updateBodySize);
    window.addEventListener('keyup', this.saveSelection);
    window.addEventListener('mouseup', this.saveSelection);
    window.addEventListener('contextmenu', this.saveSelection);
@ -106,10 +95,10 @@ export default {
          / (sectionDesc.tocDimension.height || 1);
        const editorScrollTop = sectionDesc.editorDimension.startOffset
          + (sectionDesc.editorDimension.height * posInSection);
-        editorElt.parentNode.scrollTop = editorScrollTop - constants.scrollOffset;
+        editorElt.parentNode.scrollTop = editorScrollTop;
        const previewScrollTop = sectionDesc.previewDimension.startOffset
          + (sectionDesc.previewDimension.height * posInSection);
-        previewElt.parentNode.scrollTop = previewScrollTop - constants.scrollOffset;
+        previewElt.parentNode.scrollTop = previewScrollTop;
        return true;
      });
    }
@ -162,7 +151,7 @@ export default {
 }

 .layout__panel--explorer {
-  background-color: #ddd;
+  background-color: #dadada;
 }

 .layout__panel--button-bar,
--- a/src/components/NavigationBar.vue
+++ b/src/components/NavigationBar.vue
@ -1,13 +1,13 @@
 <template>
-  <div class="navigation-bar" v-bind:class="{'navigation-bar--editor': showEditor}">
+  <div class="navigation-bar" v-bind:class="{'navigation-bar--editor': styles.showEditor}">
    <div class="navigation-bar__inner navigation-bar__inner--left navigation-bar__inner--button">
      <button class="navigation-bar__button button" @click="toggleExplorer()">
-        <icon-menu></icon-menu>
+        <icon-folder-multiple></icon-folder-multiple>
      </button>
    </div>
    <div class="navigation-bar__inner navigation-bar__inner--right navigation-bar__inner--button">
      <button class="navigation-bar__button button" @click="toggleExplorer()">
-        <icon-settings></icon-settings>
+        <icon-menu></icon-menu>
      </button>
    </div>
    <div class="navigation-bar__inner navigation-bar__inner--right flex flex--row">
@ -15,7 +15,7 @@
        <div class="spinner"></div>
      </div>
      <div class="navigation-bar__title navigation-bar__title--fake text-input"></div>
-      <div class="navigation-bar__title navigation-bar__title--text text-input" v-bind:style="{maxWidth: titleMaxWidth + 'px'}">{{title}}</div>
+      <div class="navigation-bar__title navigation-bar__title--text text-input" v-bind:style="{maxWidth: styles.titleMaxWidth + 'px'}">{{title}}</div>
      <input class="navigation-bar__title navigation-bar__title--input text-input" v-bind:class="{'navigation-bar__title--focus': titleFocus, 'navigation-bar__title--scrolling': titleScrolling}" v-bind:style="{width: titleWidth + 'px'}" @focus="editTitle(true)" @blur="editTitle(false)" @keyup.enter="submitTitle()" @keyup.esc="submitTitle(true)" v-on:mouseenter="titleHover = true" v-on:mouseleave="titleHover = false" v-model="title">
    </div>
    <div class="navigation-bar__inner navigation-bar__inner--edit-buttons">
@ -60,7 +60,7 @@
 </template>

 <script>
-import { mapState, mapActions } from 'vuex';
+import { mapGetters, mapMutations } from 'vuex';
 import editorSvc from '../services/editorSvc';
 import animationSvc from '../services/animationSvc';

@ -72,19 +72,18 @@ export default {
    titleHover: false,
  }),
  computed: {
-    ...mapState('layout', {
-      showEditor: 'showEditor',
-      titleMaxWidth: 'titleMaxWidth',
-    }),
+    ...mapGetters('layout', [
+      'styles',
+    ]),
    titleWidth() {
      if (!this.mounted) {
        return 0;
      }
      this.titleFakeElt.textContent = this.title;
-      const width = this.titleFakeElt.getBoundingClientRect().width + 1; // 1px for the caret
-      return width < this.titleMaxWidth
+      const width = this.titleFakeElt.getBoundingClientRect().width + 2; // 2px for the caret
+      return width < this.styles.titleMaxWidth
        ? width
-        : this.titleMaxWidth;
+        : this.styles.titleMaxWidth;
    },
    titleScrolling() {
      const result = this.titleHover && !this.titleFocus;
@ -106,7 +105,7 @@ export default {
    },
  },
  methods: {
-    ...mapActions('layout', [
+    ...mapMutations('layout', [
      'toggleExplorer',
      'toggleSideBar',
    ]),
@ -120,7 +119,7 @@ export default {
      } else {
        const title = this.title.trim();
        if (title) {
-          this.$store.dispatch('files/patchCurrent', { name: title });
+          this.$store.dispatch('files/patchCurrent', { name: title.slice(0, 250) });
        } else {
          this.title = this.$store.getters['files/current'].name;
        }
@ -161,6 +160,10 @@ export default {

 .navigation-bar__inner--left {
  float: left;
+
+  &.navigation-bar__inner--button {
+    margin-right: 15px;
+  }
 }

 .navigation-bar__inner--right {
@ -176,9 +179,16 @@ export default {
 }

 .navigation-bar__button {
-  display: inline-block;
  width: 34px;
  padding: 6px;
+
+  /* prevent from seeing wrapped buttons */
+  margin-bottom: 20px;
+
+  .navigation-bar__inner--button & {
+    padding: 7px;
+    width: 38px;
+  }
 }

 .navigation-bar__title,
@ -186,7 +196,7 @@ export default {
  display: inline-block;
  color: $navbar-color;
  background-color: transparent;
-  font-weight: 400;
+  font-size: 22px;
 }

 .navigation-bar__title--input,
@ -235,7 +245,7 @@ export default {
 }

 .navigation-bar__spinner {
-  margin: 10px 5px 0;
+  margin: 10px 5px 0 15px;
  color: rgba(255, 255, 255, 0.33);
 }

--- a/src/components/Preview.vue
+++ b/src/components/Preview.vue
@ -1,19 +1,19 @@
 <template>
  <div class="preview">
-    <div class="preview__inner" :style="{ 'padding-left': previewPadding + 'px', 'padding-right': previewPadding + 'px' }">
+    <div class="preview__inner" :style="{ 'padding-left': styles.previewPadding + 'px', 'padding-right': styles.previewPadding + 'px' }">
    </div>
  </div>
 </template>


 <script>
-import { mapState } from 'vuex';
+import { mapGetters } from 'vuex';

 const appUri = `${window.location.protocol}//${window.location.host}`;

 export default {
-  computed: mapState('layout', [
-    'previewPadding',
+  computed: mapGetters('layout', [
+    'styles',
  ]),
  mounted() {
    this.$el.addEventListener('click', (evt) => {
@ -45,4 +45,17 @@ export default {
  margin: 0;
  padding: 0 1035px 360px;
 }
+
+.preview__inner > :first-child {
+  & > h1,
+  & > h2,
+  & > h3,
+  & > h4,
+  & > h5,
+  & > h6 {
+    &:first-child {
+      margin-top: 0;
+    }
+  }
+}
 </style>
--- a/src/components/StatusBar.vue
+++ b/src/components/StatusBar.vue
@ -1,8 +1,8 @@
 <template>
  <div class="stat-panel panel no-overflow">
-    <div class="stat-panel__block stat-panel__block--left" v-if="showEditor">
+    <div class="stat-panel__block stat-panel__block--left" v-if="styles.showEditor">
      <span class="stat-panel__block-name">
-        Text
+        Markdown
        <small v-show="textSelection">(selection)</small>
      </span>
      <span v-for="stat in textStats" :key="stat.id">
@ -23,7 +23,7 @@
 </template>

 <script>
-import { mapState } from 'vuex';
+import { mapGetters } from 'vuex';
 import editorSvc from '../services/editorSvc';
 import editorEngineSvc from '../services/editorEngineSvc';
 import utils from '../services/utils';
@ -54,9 +54,9 @@ export default {
      new Stat('paragraphs', '\\S.*'),
    ],
  }),
-  computed: mapState('layout', {
-    showEditor: 'showEditor',
-  }),
+  computed: mapGetters('layout', [
+    'styles',
+  ]),
  created() {
    editorSvc.$on('sectionList', () => this.computeText());
    editorSvc.$on('selectionRange', () => this.computeText());
--- a/src/components/common/app.scss
+++ b/src/components/common/app.scss
@ -38,10 +38,11 @@ textarea {

 .text-input {
  display: block;
+  font-variant-ligatures: no-common-ligatures;
  width: 100%;
  height: 36px;
  padding: 3px 12px;
-  font-size: 22px;
+  font-size: inherit;
  line-height: 1.5;
  color: inherit;
  background-color: #fff;
@ -57,7 +58,7 @@ textarea {
  height: 36px;
  padding: 3px 12px;
  margin-bottom: 0;
-  font-size: 22px;
+  font-size: inherit;
  font-weight: 400;
  line-height: 1.4;
  overflow: hidden;
@ -106,13 +107,3 @@ textarea {
  flex-direction: column;
 }

-.side-title {
-  height: 44px;
-  line-height: 44px;
-  padding: 0 10px;
-  background-color: #ccc;
-}
-
-.side-title__text {
-  text-transform: uppercase;
-}
--- a/src/components/common/fonts.scss
+++ b/src/components/common/fonts.scss
@ -27,15 +27,15 @@
 }

@font-face {
-  font-family: 'Inconsolata';
+  font-family: 'Roboto Mono';
  font-style: normal;
  font-weight: 400;
-  src: url('../assets/fonts/inconsolata.woff') format('woff');
+  src: url('../assets/fonts/RobotoMono-Regular.woff') format('woff');
 }

@font-face {
-  font-family: 'Inconsolata';
+  font-family: 'Roboto Mono';
  font-style: normal;
  font-weight: 600;
-  src: url('../assets/fonts/inconsolata-bold.woff') format('woff');
+  src: url('../assets/fonts/RobotoMono-Bold.woff') format('woff');
 }
--- a/src/components/common/variables.scss
+++ b/src/components/common/variables.scss
@ -1,8 +1,8 @@
 $font-family-main: Lato, 'Helvetica Neue', Helvetica, sans-serif;
-$font-family-monospace: Inconsolata, 'Lucida Sans Typewriter', 'Lucida Console', monaco, Courrier, monospace;
+$font-family-monospace: 'Roboto Mono', 'Lucida Sans Typewriter', 'Lucida Console', monaco, Courrier, monospace;
 $line-height-base: 1.67;
 $line-height-title: 1.33;
-$font-size-monospace: 0.95em;
+$font-size-monospace: 0.85em;
 $code-bg: rgba(0, 0, 0, 0.05);
 $code-border-radius: 2px;
 $link-color: #4a80cf;
@ -10,7 +10,7 @@ $border-radius-base: 2px;
 $hr-color: rgba(128, 128, 128, 0.2);
 $navbar-color: rgba(255, 255, 255, 0.67);
 $navbar-hover-color: #fff;
-$navbar-hover-background: #484848;
+$navbar-hover-background: rgba(255, 255, 255, 0.1);

 $editor-color: rgba(0, 0, 0, 0.8);
 $editor-color-light: rgba(0, 0, 0, 0.28);
--- a/src/data/defaultContent.md
+++ b/src/data/defaultContent.md
@ -0,0 +1,4 @@
+
+
+
+> Written with [StackEdit](https://stackedit.io/).
--- a/src/data/emptyContent.js
+++ b/src/data/emptyContent.js
@ -1,4 +1,5 @@
 export default () => ({
+  id: null,
  type: 'content',
  state: {},
  text: '\n',
--- a/src/data/emptyFile.js
+++ b/src/data/emptyFile.js
@ -1,6 +1,7 @@
 export default () => ({
+  id: null,
  type: 'file',
  name: '',
-  folderId: null,
+  parentId: null,
  contentId: null,
 });
--- a/src/data/emptyFolder.js
+++ b/src/data/emptyFolder.js
@ -0,0 +1,6 @@
+export default () => ({
+  id: null,
+  type: 'folder',
+  name: '',
+  parentId: null,
+});
--- a/src/icons/Close.vue
+++ b/src/icons/Close.vue
@ -0,0 +1,5 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" baseProfile="full" class="icon" width="100%" height="100%" viewBox="0 0 24.00 24.00" enable-background="new 0 0 24.00 24.00" xml:space="preserve">
+    <path d="M19,6.41L17.59,5L12,10.59L6.41,5L5,6.41L10.59,12L5,17.59L6.41,19L12,13.41L17.59,19L19,17.59L13.41,12L19,6.41Z" />
+  </svg>
+</template>
--- a/src/icons/Delete.vue
+++ b/src/icons/Delete.vue
@ -0,0 +1,5 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" baseProfile="full" class="icon" width="100%" height="100%" viewBox="0 0 24.00 24.00" enable-background="new 0 0 24.00 24.00" xml:space="preserve">
+    <path d="M19,4H15.5L14.5,3H9.5L8.5,4H5V6H19M6,19C6,20.1 6.9,21 8,21H16C17.1,21 18,20.1 18,19V7H6V19Z" />
+  </svg>
+</template>
--- a/src/icons/FilePlus.vue
+++ b/src/icons/FilePlus.vue
@ -0,0 +1,5 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" baseProfile="full" class="icon" width="100%" height="100%" viewBox="0 0 24.00 24.00" enable-background="new 0 0 24.00 24.00" xml:space="preserve">
+    <path d="M13,9H18.5L13,3.5V9M6,2H14L20,8V20C20,21.1 19.1,22 18,22H6C4.89,22 4,21.1 4,20V4C4,2.89 4.89,2 6,2M11,15V12H9V15H6V17H9V20H11V17H14V15H11Z" />
+  </svg>
+</template>
--- a/src/icons/FolderMultiple.vue
+++ b/src/icons/FolderMultiple.vue
@ -0,0 +1,5 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" baseProfile="full" class="icon" width="100%" height="100%" viewBox="0 0 24.00 24.00" enable-background="new 0 0 24.00 24.00" xml:space="preserve">
+    <path d="M22,4H14L12,2H6C4.9,2 4,2.9 4,4V16C4,17.1 4.9,18 6,18H22C23.1,18 24,17.1 24,16V6C24,4.9 23.1,4 22,4M2,6H0V11H0V20C0,21.1 0.9,22 2,22H20V20H2V6Z" />
+  </svg>
+</template>
--- a/src/icons/FolderPlus.vue
+++ b/src/icons/FolderPlus.vue
@ -0,0 +1,5 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" baseProfile="full" class="icon" width="100%" height="100%" viewBox="0 0 24.00 24.00" enable-background="new 0 0 24.00 24.00" xml:space="preserve">
+    <path d="M10,4L12,6H20C21.1,6 22,6.9 22,8V18C22,19.1 21.1,20 20,20H4C2.89,20 2,19.1 2,18V6C2,4.89 2.89,4 4,4H10M15,9V12H12V14H15V17H17V14H20V12H17V9H15Z" />
+  </svg>
+</template>
--- a/src/icons/Pen.vue
+++ b/src/icons/Pen.vue
@ -0,0 +1,5 @@
+<template>
+  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" baseProfile="full" class="icon" width="100%" height="100%" viewBox="0 0 24.00 24.00" enable-background="new 0 0 24.00 24.00" xml:space="preserve">
+    <path d="M20.71,7.04C21.1,6.65 21.1,6 20.71,5.63L18.37,3.29C18,2.9 17.35,2.9 16.96,3.29L15.12,5.12L18.87,8.87M3,17.25V21H6.75L17.81,9.93L14.06,6.18L3,17.25Z" />
+  </svg>
+</template>
--- a/src/icons/index.js
+++ b/src/icons/index.js
@ -17,6 +17,12 @@ import SidePreview from './SidePreview';
 import Eye from './Eye';
 import Menu from './Menu';
 import Settings from './Settings';
+import FilePlus from './FilePlus';
+import FolderPlus from './FolderPlus';
+import Delete from './Delete';
+import Close from './Close';
+import FolderMultiple from './FolderMultiple';
+import Pen from './Pen';

 Vue.component('iconFormatBold', FormatBold);
 Vue.component('iconFormatItalic', FormatItalic);
@ -36,3 +42,9 @@ Vue.component('iconSidePreview', SidePreview);
 Vue.component('iconEye', Eye);
 Vue.component('iconMenu', Menu);
 Vue.component('iconSettings', Settings);
+Vue.component('iconFilePlus', FilePlus);
+Vue.component('iconFolderPlus', FolderPlus);
+Vue.component('iconDelete', Delete);
+Vue.component('iconClose', Close);
+Vue.component('iconFolderMultiple', FolderMultiple);
+Vue.component('iconPen', Pen);
--- a/src/services/constants.js
+++ b/src/services/constants.js
@ -1,3 +0,0 @@
-export default {
-  scrollOffset: 0,
-};
--- a/src/services/editorSvc.js
+++ b/src/services/editorSvc.js
@ -9,7 +9,6 @@ import markdownConversionSvc from './markdownConversionSvc';
 import markdownGrammarSvc from './markdownGrammarSvc';
 import sectionUtils from './sectionUtils';
 import extensionSvc from './extensionSvc';
-import constants from './constants';
 import animationSvc from './animationSvc';
 import editorEngineSvc from './editorEngineSvc';
 import store from '../store';
@ -63,7 +62,7 @@ const editorSvc = Object.assign(new Vue(), { // Use a vue instance as an event b
  getObjectToScroll() {
    let elt = this.editorElt.parentNode;
    let dimensionKey = 'editorDimension';
-    if (!store.state.layout.showEditor) {
+    if (!store.getters['layout/styles'].showEditor) {
      elt = this.previewElt.parentNode;
      dimensionKey = 'previewDimension';
    }
@ -426,10 +425,10 @@ const editorSvc = Object.assign(new Vue(), { // Use a vue instance as an event b
    let scrollerElt = this.previewElt.parentNode;
    const sectionDesc = anchorHash[anchor];
    if (sectionDesc) {
-      if (store.state.layout.showSidePreview || !store.state.layout.showEditor) {
+      if (store.getters['layout/styles'].showPreview) {
        scrollTop = sectionDesc.previewDimension.startOffset;
      } else {
-        scrollTop = sectionDesc.editorDimension.startOffset - constants.scrollOffset;
+        scrollTop = sectionDesc.editorDimension.startOffset;
        scrollerElt = this.editorElt.parentNode;
      }
    } else {
@ -575,7 +574,7 @@ const editorSvc = Object.assign(new Vue(), { // Use a vue instance as an event b

    let newSectionList;
    let newSelectionRange;
-    const debouncedEditorChanged = debounce(() => {
+    const onEditorChanged = () => {
      if (this.sectionList !== newSectionList) {
        this.sectionList = newSectionList;
        this.$emit('sectionList', this.sectionList);
@ -590,7 +589,8 @@ const editorSvc = Object.assign(new Vue(), { // Use a vue instance as an event b
        this.$emit('selectionRange', this.selectionRange);
      }
      this.saveContentState();
-    }, 10);
+    };
+    const debouncedEditorChanged = debounce(onEditorChanged, 10);

    editorEngineSvc.clEditor.selectionMgr.on('selectionChanged', (start, end, selectionRange) => {
      newSelectionRange = selectionRange;
@ -685,9 +685,15 @@ const editorSvc = Object.assign(new Vue(), { // Use a vue instance as an event b

    editorEngineSvc.clEditor.on('contentChanged', (content, diffs, sectionList) => {
      newSectionList = sectionList;
-      debouncedEditorChanged();
+      if (instantPreview) {
+        onEditorChanged();
+      } else {
+        debouncedEditorChanged();
+      }
    });

+    this.$emit('inited');
+
    // scope.$watch('editorLayoutSvc.isEditorOpen', function (isOpen) {
    //   clEditorSvc.cledit.toggleEditable(isOpen)
    // })
@ -736,12 +742,10 @@ const editorSvc = Object.assign(new Vue(), { // Use a vue instance as an event b
        immediate: true,
      });

-    store.watch(state => `${state.layout.editorWidth},${state.layout.previewWidth}`,
+    store.watch(() => `${store.getters['layout/styles'].editorWidth},${store.getters['layout/styles'].previewWidth}`,
      () => editorSvc.measureSectionDimensions(true));
-    store.watch(state => state.layout.showSidePreview,
+    store.watch(() => store.getters['layout/styles'].showSidePreview,
      showSidePreview => showSidePreview && editorSvc.measureSectionDimensions());
-
-    this.$emit('inited');
  },
 });

--- a/src/services/localDbSvc.js
+++ b/src/services/localDbSvc.js
@ -118,6 +118,7 @@ export default {
      [
        store.state.contents,
        store.state.files,
+        store.state.folders,
      ].forEach(moduleState => Object.assign(storeItemMap, moduleState.itemMap));
      this.connection.createTx((tx) => {
        this.readAll(storeItemMap, tx, () => {
--- a/src/services/optional/scrollSync.js
+++ b/src/services/optional/scrollSync.js
@ -1,5 +1,4 @@
 import store from '../../store';
-import constants from '../constants';
 import animationSvc from '../animationSvc';
 import editorSvc from '../editorSvc';

@ -34,9 +33,7 @@ function throttle(func, wait) {
 }

 const doScrollSync = () => {
-  const localSkipAnimation = skipAnimation
-    || !store.state.layout.showSidePreview
-    || !store.state.layout.showEditor;
+  const localSkipAnimation = skipAnimation || !store.getters['layout/styles'].showSidePreview;
  skipAnimation = false;
  if (!store.state.editor.scrollSync || !sectionDescList || sectionDescList.length === 0) {
    return;
@ -45,12 +42,11 @@ const doScrollSync = () => {
  if (editorScrollTop < 0) {
    editorScrollTop = 0;
  }
-  let previewScrollTop = previewScrollerElt.scrollTop;
+  const previewScrollTop = previewScrollerElt.scrollTop;
  let scrollTo;
  if (isScrollEditor) {
    // Scroll the preview
    isScrollEditor = false;
-    editorScrollTop += constants.scrollOffset;
    sectionDescList.some((sectionDesc) => {
      if (editorScrollTop > sectionDesc.editorDimension.endOffset) {
        return false;
@ -58,7 +54,7 @@ const doScrollSync = () => {
      const posInSection = (editorScrollTop - sectionDesc.editorDimension.startOffset)
        / (sectionDesc.editorDimension.height || 1);
      scrollTo = (sectionDesc.previewDimension.startOffset
-        + (sectionDesc.previewDimension.height * posInSection)) - constants.scrollOffset;
+        + (sectionDesc.previewDimension.height * posInSection));
      return true;
    });
    scrollTo = Math.min(
@ -79,10 +75,9 @@ const doScrollSync = () => {
          isPreviewMoving = true;
        });
    }, localSkipAnimation ? 500 : 50);
-  } else if (!store.state.layout.showEditor || isScrollPreview) {
+  } else if (!store.getters['layout/styles'].showEditor || isScrollPreview) {
    // Scroll the editor
    isScrollPreview = false;
-    previewScrollTop += constants.scrollOffset;
    sectionDescList.some((sectionDesc) => {
      if (previewScrollTop > sectionDesc.previewDimension.endOffset) {
        return false;
@ -90,7 +85,7 @@ const doScrollSync = () => {
      const posInSection = (previewScrollTop - sectionDesc.previewDimension.startOffset)
        / (sectionDesc.previewDimension.height || 1);
      scrollTo = (sectionDesc.editorDimension.startOffset
-        + (sectionDesc.editorDimension.height * posInSection)) - constants.scrollOffset;
+        + (sectionDesc.editorDimension.height * posInSection));
      return true;
    });
    scrollTo = Math.min(
@ -119,7 +114,7 @@ let timeoutId;

 const forceScrollSync = () => {
  if (!isPreviewRefreshing) {
-    doScrollSync(!store.state.layout.showSidePreview);
+    doScrollSync();
  }
 };
 store.watch(state => state.editor.scrollSync, forceScrollSync);
@ -135,7 +130,7 @@ editorSvc.$on('inited', () => {
    }
    isScrollEditor = true;
    isScrollPreview = false;
-    doScrollSync(!store.state.layout.showSidePreview);
+    doScrollSync();
  });

  previewScrollerElt.addEventListener('scroll', () => {
@ -144,7 +139,7 @@ editorSvc.$on('inited', () => {
    }
    isScrollPreview = true;
    isScrollEditor = false;
-    doScrollSync(!store.state.layout.showSidePreview);
+    doScrollSync();
  });
 });

@ -163,14 +158,15 @@ editorSvc.$on('previewText', () => {
  // Remove height property once the preview as been refreshed
  previewElt.style.removeProperty('height');
  // Assume the user is writing in the editor
-  isScrollEditor = store.state.layout.showEditor;
+  isScrollEditor = store.getters['layout/styles'].showEditor;
  // A preview scrolling event can occur if height is smaller
  timeoutId = setTimeout(() => {
    isPreviewRefreshing = false;
  }, 100);
 });

-store.watch(state => state.layout.showSidePreview,
+store.watch(
+  () => store.getters['layout/styles'].showSidePreview,
  (showSidePreview) => {
    if (showSidePreview) {
      isScrollEditor = true;
@ -179,6 +175,12 @@ store.watch(state => state.layout.showSidePreview,
    }
  });

+store.watch(
+  () => store.getters['files/current'].id,
+  () => {
+    skipAnimation = true;
+  });
+
 editorSvc.$on('sectionDescMeasuredList', (sectionDescMeasuredList) => {
  sectionDescList = sectionDescMeasuredList;
  forceScrollSync();
--- a/src/services/syncSvc.js
+++ b/src/services/syncSvc.js
@ -10,39 +10,35 @@ const ifNoId = cb => (obj) => {
  return cb();
 };

-// Watch file changing
-store.watch(
-  () => store.getters['files/current'].id,
-  () => Promise.resolve(store.getters['files/current'])
-    // If current file has no ID, get the most recent file
-    .then(ifNoId(() => store.getters['files/mostRecent']))
-    // If no ID, load the DB (we're booting)
-    .then(ifNoId(() => localDbSvc.sync()
-      // Retry
-      .then(() => store.getters['files/current'])
-      .then(ifNoId(() => store.getters['files/mostRecent'])),
-    ))
-    // Finally create a new file
-    .then(ifNoId(() => {
-      const contentId = utils.uid();
-      store.commit('contents/setItem', {
-        id: contentId,
-        text: welcomeFile,
-      });
-      const fileId = utils.uid();
-      store.commit('files/setItem', {
-        id: fileId,
-        name: 'Welcome file',
-        contentId,
-      });
-      return store.state.files.itemMap[fileId];
-    }))
-    .then((currentFile) => {
-      store.commit('files/setCurrentId', currentFile.id);
-      store.dispatch('files/patchCurrent', {}); // Update `updated` field to make it the mostRecent
-    }),
-  {
-    immediate: true,
-  });
+// Load the DB on boot
+localDbSvc.sync()
+  // Watch file changing
+  .then(() => store.watch(
+    () => store.getters['files/current'].id,
+    () => Promise.resolve(store.getters['files/current'])
+      // If current file has no ID, get the most recent file
+      .then(ifNoId(() => store.getters['files/mostRecent']))
+      // If still no ID, create a new file
+      .then(ifNoId(() => {
+        const contentId = utils.uid();
+        store.commit('contents/setItem', {
+          id: contentId,
+          text: welcomeFile,
+        });
+        const fileId = utils.uid();
+        store.commit('files/setItem', {
+          id: fileId,
+          name: 'Welcome file',
+          contentId,
+        });
+        return store.state.files.itemMap[fileId];
+      }))
+      .then((currentFile) => {
+        store.commit('files/setCurrentId', currentFile.id);
+        store.dispatch('files/patchCurrent', {}); // Update `updated` field to make it the mostRecent
+      }),
+    {
+      immediate: true,
+    }));

 utils.setInterval(() => localDbSvc.sync(), 1200);
--- a/src/store/index.js
+++ b/src/store/index.js
@ -3,8 +3,10 @@ import Vue from 'vue';
 import Vuex from 'vuex';
 import contents from './modules/contents';
 import files from './modules/files';
+import folders from './modules/folders';
 import layout from './modules/layout';
 import editor from './modules/editor';
+import explorer from './modules/explorer';

 Vue.use(Vuex);

@ -14,8 +16,10 @@ const store = new Vuex.Store({
  modules: {
    contents,
    files,
+    folders,
    layout,
    editor,
+    explorer,
  },
  strict: debug,
  plugins: debug ? [createLogger()] : [],
--- a/src/store/modules/explorer.js
+++ b/src/store/modules/explorer.js
@ -0,0 +1,114 @@
+import Vue from 'vue';
+import emptyFile from '../../data/emptyFile';
+import emptyFolder from '../../data/emptyFolder';
+
+const setter = propertyName => (state, value) => {
+  state[propertyName] = value;
+};
+
+const collator = new Intl.Collator(undefined, { sensitivity: 'base' });
+const compare = (node1, node2) => collator.compare(node1.item.name, node2.item.name);
+
+class Node {
+  constructor(item, isFolder, isRoot) {
+    this.item = item;
+    this.isFolder = isFolder;
+    this.isRoot = isRoot;
+    if (isFolder) {
+      this.folders = [];
+      this.files = [];
+    }
+  }
+
+  sortChildren() {
+    if (this.isFolder) {
+      this.folders.sort(compare);
+      this.files.sort(compare);
+      this.folders.forEach(child => child.sortChildren());
+    }
+  }
+}
+
+const nilFileNode = new Node(emptyFile());
+nilFileNode.isNil = true;
+
+function getParent(node, getters) {
+  if (node === nilFileNode) {
+    return nilFileNode;
+  }
+  return getters.nodeMap[node.item.parentId] || getters.rootNode;
+}
+
+export default {
+  namespaced: true,
+  state: {
+    selectedId: null,
+    editingId: null,
+    newChildNode: nilFileNode,
+    openNodes: {},
+  },
+  getters: {
+    nodeStructure: (state, getters, rootState, rootGetters) => {
+      const nodeMap = {};
+      rootGetters['folders/items'].forEach((item) => {
+        nodeMap[item.id] = new Node(item, true);
+      });
+      rootGetters['files/items'].forEach((item) => {
+        nodeMap[item.id] = new Node(item);
+      });
+      const rootNode = new Node(emptyFolder(), true, true);
+      Object.keys(nodeMap).forEach((id) => {
+        const node = nodeMap[id];
+        let parentNode = nodeMap[node.item.parentId];
+        if (!parentNode || !parentNode.isFolder) {
+          parentNode = rootNode;
+        }
+        if (node.isFolder) {
+          parentNode.folders.push(node);
+        } else {
+          parentNode.files.push(node);
+        }
+      });
+      rootNode.sortChildren();
+      return {
+        nodeMap,
+        rootNode,
+      };
+    },
+    nodeMap: (state, getters) => getters.nodeStructure.nodeMap,
+    rootNode: (state, getters) => getters.nodeStructure.rootNode,
+    newChildNodeParent: (state, getters) => getParent(state.newChildNode, getters),
+    selectedNode: (state, getters) => getters.nodeMap[state.selectedId] || nilFileNode,
+    selectedNodeFolder: (state, getters) => {
+      const selectedNode = getters.selectedNode;
+      return selectedNode.item.type === 'folder'
+        ? selectedNode
+        : getParent(selectedNode, getters);
+    },
+    editingNode: (state, getters) => getters.nodeMap[state.editingId] || nilFileNode,
+  },
+  mutations: {
+    setSelectedId: setter('selectedId'),
+    setEditingId: setter('editingId'),
+    setNewItem(state, item) {
+      state.newChildNode = item ? new Node(item) : nilFileNode;
+    },
+    setNewItemName(state, name) {
+      state.newChildNode.item.name = name;
+    },
+    toggleOpenNode(state, id) {
+      Vue.set(state.openNodes, id, !state.openNodes[id]);
+    },
+  },
+  actions: {
+    openNode({ state, getters, commit, dispatch }, id) {
+      const node = getters.nodeMap[id];
+      if (node) {
+        if (node.isFolder && !state.openNodes[id]) {
+          commit('toggleOpenNode', id);
+        }
+        dispatch('openNode', node.item.parentId);
+      }
+    },
+  },
+};
--- a/src/store/modules/folders.js
+++ b/src/store/modules/folders.js
@ -0,0 +1,6 @@
+import moduleTemplate from './moduleTemplate';
+import empty from '../../data/emptyFolder';
+
+const module = moduleTemplate(empty);
+
+export default module;
--- a/src/store/modules/layout.js
+++ b/src/store/modules/layout.js
@ -9,148 +9,135 @@ const setter = propertyName => (state, value) => {
  state[propertyName] = value;
 };

-const toggler = (propertyName, setterName) => ({ state, commit, dispatch }, show) => {
-  commit(setterName, show === undefined ? !state[propertyName] : show);
-  dispatch('updateStyle');
+const toggler = propertyName => (state, value) => {
+  state[propertyName] = value === undefined ? !state[propertyName] : value;
 };

 export default {
  namespaced: true,
  state: {
-    // Constants
-    explorerWidth: 280,
-    sideBarWidth: 280,
-    navigationBarHeight: 44,
-    buttonBarWidth: 30,
-    statusBarHeight: 20,
+    constants: {
+      explorerWidth: 250,
+      sideBarWidth: 280,
+      navigationBarHeight: 44,
+      buttonBarWidth: 30,
+      statusBarHeight: 20,
+    },
    // Configuration
    showNavigationBar: true,
    showEditor: true,
    showSidePreview: true,
    showStatusBar: true,
    showSideBar: false,
-    showExplorer: false,
+    showExplorer: true,
    editorWidthFactor: 1,
    fontSizeFactor: 1,
-    // Style
-    fontSize: 0,
-    innerWidth: 0,
-    innerHeight: 0,
-    editorWidth: 0,
-    editorPadding: 0,
-    previewWidth: 0,
-    previewPadding: 0,
-    titleMaxWidth: 0,
+    // Styles
+    bodyWidth: 0,
+    bodyHeight: 0,
  },
  mutations: {
-    setShowNavigationBar: setter('showNavigationBar'),
-    setShowEditor: setter('showEditor'),
-    setShowSidePreview: setter('showSidePreview'),
-    setShowStatusBar: setter('showStatusBar'),
-    setShowSideBar: setter('showSideBar'),
-    setShowExplorer: setter('showExplorer'),
+    toggleNavigationBar: toggler('showNavigationBar'),
+    toggleEditor: toggler('showEditor'),
+    toggleSidePreview: toggler('showSidePreview'),
+    toggleStatusBar: toggler('showStatusBar'),
+    toggleSideBar: toggler('showSideBar'),
+    toggleExplorer: toggler('showExplorer'),
    setEditorWidthFactor: setter('editorWidthFactor'),
    setFontSizeFactor: setter('fontSizeFactor'),
-    setFontSize: setter('fontSize'),
-    setInnerWidth: setter('innerWidth'),
-    setInnerHeight: setter('innerHeight'),
-    setEditorWidth: setter('editorWidth'),
-    setEditorPadding: setter('editorPadding'),
-    setPreviewWidth: setter('previewWidth'),
-    setPreviewPadding: setter('previewPadding'),
-    setTitleMaxWidth: setter('titleMaxWidth'),
+    updateBodySize: (state) => {
+      state.bodyWidth = document.body.clientWidth;
+      state.bodyHeight = document.body.clientHeight;
+    },
  },
-  actions: {
-    toggleNavigationBar: toggler('showNavigationBar', 'setShowNavigationBar'),
-    toggleEditor: toggler('showEditor', 'setShowEditor'),
-    toggleSidePreview: toggler('showSidePreview', 'setShowSidePreview'),
-    toggleStatusBar: toggler('showStatusBar', 'setShowStatusBar'),
-    toggleSideBar: toggler('showSideBar', 'setShowSideBar'),
-    toggleExplorer: toggler('showExplorer', 'setShowExplorer'),
-    updateStyle({ state, commit, dispatch }) {
-      const bodyWidth = document.body.clientWidth;
-      const bodyHeight = document.body.clientHeight;
+  getters: {
+    styles: (state) => {
+      const styles = {
+        showNavigationBar: !state.showEditor || state.showNavigationBar,
+        showStatusBar: state.showStatusBar,
+        showEditor: state.showEditor,
+        showSidePreview: state.showSidePreview && state.showEditor,
+        showPreview: state.showSidePreview || !state.showEditor,
+        showSideBar: state.showSideBar,
+        showExplorer: state.showExplorer,
+      };

-      const showNavigationBar = !state.showEditor || state.showNavigationBar;
-      let innerHeight = bodyHeight;
-      if (showNavigationBar) {
-        innerHeight -= state.navigationBarHeight;
-      }
-      if (state.showStatusBar) {
-        innerHeight -= state.statusBarHeight;
-      }
+      function computeStyles() {
+        styles.innerHeight = state.bodyHeight;
+        if (styles.showNavigationBar) {
+          styles.innerHeight -= state.constants.navigationBarHeight;
+        }
+        if (styles.showStatusBar) {
+          styles.innerHeight -= state.constants.statusBarHeight;
+        }

-      let innerWidth = bodyWidth;
-      if (state.showSideBar) {
-        innerWidth -= state.sideBarWidth;
-      }
-      if (state.showExplorer) {
-        innerWidth -= state.explorerWidth;
-      }
-      let doublePanelWidth = innerWidth - state.buttonBarWidth;
-      if (doublePanelWidth < editorMinWidth) {
-        if (state.showSideBar) {
-          dispatch('toggleSideBar', false);
+        styles.innerWidth = state.bodyWidth;
+        if (styles.showSideBar) {
+          styles.innerWidth -= state.constants.sideBarWidth;
+        }
+        if (styles.showExplorer) {
+          styles.innerWidth -= state.constants.explorerWidth;
+        }
+
+        let doublePanelWidth = styles.innerWidth - state.constants.buttonBarWidth;
+        if (doublePanelWidth < editorMinWidth) {
+          if (styles.showSideBar) {
+            styles.showSideBar = false;
+            computeStyles();
+            return;
+          }
+          if (styles.showExplorer) {
+            styles.showExplorer = false;
+            computeStyles();
+            return;
+          }
+          doublePanelWidth = editorMinWidth;
+        }
+
+        if (styles.showSidePreview && doublePanelWidth / 2 < editorMinWidth) {
+          styles.showSidePreview = false;
+          computeStyles();
          return;
        }
-        if (state.showExplorer) {
-          dispatch('toggleExplorer', false);
-          return;
+
+        styles.fontSize = 18;
+        styles.textWidth = 990;
+        if (doublePanelWidth < 1120) {
+          styles.fontSize -= 1;
+          styles.textWidth = 910;
        }
-        doublePanelWidth = editorMinWidth;
-      }
-      const splitPanel = state.showEditor && state.showSidePreview;
-      if (splitPanel && doublePanelWidth / 2 < editorMinWidth) {
-        dispatch('toggleSidePreview', false);
-        return;
+        if (doublePanelWidth < 1040) {
+          styles.textWidth = 830;
+        }
+        styles.textWidth *= state.editorWidthFactor;
+        if (doublePanelWidth < styles.textWidth) {
+          styles.textWidth = doublePanelWidth;
+        }
+        if (styles.textWidth < 640) {
+          styles.fontSize -= 1;
+        }
+        styles.fontSize *= state.fontSizeFactor;
+
+        const panelWidth = doublePanelWidth / 2;
+        styles.previewWidth = styles.showSidePreview ?
+          panelWidth :
+          styles.innerWidth;
+        styles.previewPadding = Math.max((styles.previewWidth - styles.textWidth) / 2, minPadding);
+        styles.editorWidth = styles.showSidePreview ?
+          panelWidth :
+          doublePanelWidth;
+        styles.editorPadding = Math.max((styles.editorWidth - styles.textWidth) / 2, minPadding);
+
+        styles.titleMaxWidth = styles.innerWidth - navigationBarSpaceWidth;
+        if (styles.showEditor) {
+          styles.titleMaxWidth -= navigationBarLeftWidth;
+        }
+        styles.titleMaxWidth = Math.min(styles.titleMaxWidth, maxTitleMaxWidth);
+        styles.titleMaxWidth = Math.max(styles.titleMaxWidth, minTitleMaxWidth);
      }

-      let fontSize = 18;
-      let textWidth = 990;
-      if (doublePanelWidth < 1120) {
-        fontSize -= 1;
-        textWidth = 910;
-      }
-      if (doublePanelWidth < 1040) {
-        textWidth = 830;
-      }
-      if (textWidth < 640) {
-        fontSize -= 1;
-      }
-      textWidth *= state.editorWidthFactor;
-      fontSize *= state.fontSizeFactor;
-
-      const panelWidth = doublePanelWidth / 2;
-      const previewWidth = splitPanel ?
-        panelWidth :
-        innerWidth;
-      let previewPadding = (previewWidth - textWidth) / 2;
-      if (previewPadding < minPadding) {
-        previewPadding = minPadding;
-      }
-      const editorWidth = splitPanel ?
-        panelWidth :
-        doublePanelWidth;
-      let editorPadding = (editorWidth - textWidth) / 2;
-      if (editorPadding < minPadding) {
-        editorPadding = minPadding;
-      }
-
-      let titleMaxWidth = innerWidth - navigationBarSpaceWidth;
-      if (state.showEditor) {
-        titleMaxWidth -= navigationBarLeftWidth;
-      }
-      titleMaxWidth = Math.min(titleMaxWidth, maxTitleMaxWidth);
-      titleMaxWidth = Math.max(titleMaxWidth, minTitleMaxWidth);
-
-      commit('setFontSize', fontSize);
-      commit('setInnerWidth', innerWidth);
-      commit('setInnerHeight', innerHeight);
-      commit('setPreviewWidth', previewWidth);
-      commit('setPreviewPadding', previewPadding);
-      commit('setEditorWidth', editorWidth);
-      commit('setEditorPadding', editorPadding);
-      commit('setTitleMaxWidth', titleMaxWidth);
+      computeStyles();
+      return styles;
    },
  },
 };
				`@ -0,0 +1,4 @@`



				`> Written with [StackEdit](https://stackedit.io/).`