modify: cut down the component from SideNav component

browser/components/StorageItem.js

@@ -0,0 +1,57 @@
+/**
+ * @fileoverview Micro component for showing storage.
+ */
+import React, { PropTypes } from 'react'
+import styles from './StorageItem.styl'
+import CSSModules from 'browser/lib/CSSModules'
+
+/**
+ * @param {boolean} isActive
+ * @param {Function} handleButtonClick
+ * @param {Function} handleContextMenu
+ * @param {string} folderName
+ * @param {string} folderColor
+ * @param {boolean} isFolded
+ * @param {number} noteCount
+ * @return {React.Component}
+ */
+const StorageItem = ({
+  isActive, handleButtonClick, handleContextMenu, folderName,
+  folderColor, isFolded, noteCount
+}) => (
+  <button styleName={isActive
+      ? 'folderList-item--active'
+      : 'folderList-item'
+    }
+    onClick={handleButtonClick}
+    onContextMenu={handleContextMenu}
+  >
+    <span styleName={isFolded ?
+      'folderList-item-name--folded' : 'folderList-item-name'
+    }
+      style={{borderColor: folderColor}}
+    >
+      {isFolded ? folderName.substring(0, 1) : folderName}
+    </span>
+    {!isFolded &&
+      <span styleName='folderList-item-noteCount'>{noteCount}</span>
+    }
+    {isFolded &&
+      <span styleName='folderList-item-tooltip'>
+        {folderName}
+      </span>
+    }
+  </button>
+)
+
+StorageItem.propTypes = {
+  isActive: PropTypes.bool.isRequired,
+  handleButtonClick: PropTypes.func,
+  handleContextMenu: PropTypes.func,
+  folderName: PropTypes.string.isRequired,
+  folderColor: PropTypes.string,
+  isFolded: PropTypes.bool.isRequired,
+  noteCount: PropTypes.number.isRequired,
+}
+
+export default CSSModules(StorageItem, styles)

browser/components/StorageItem.styl

@@ -0,0 +1,68 @@
+.root
+  width 100%
+  user-select none
+
+.folderList-item
+  display flex
+  width 100%
+  height 26px
+  background-color transparent
+  color $ui-inactive-text-color
+  padding 0
+  margin-bottom 5px
+  text-align left
+  border none
+  overflow ellipsis
+  font-size 14px
+  &:first-child
+    margin-top 0
+  &:hover
+    background-color $ui-button--hover-backgroundColor
+  &:active
+    color $ui-button--active-color
+    background-color $ui-button--active-backgroundColor
+
+.folderList-item--active
+  @extend .folderList-item
+  color $ui-button--active-color
+  background-color $ui-button--active-backgroundColor
+  &:hover
+    color $ui-button--active-color
+    background-color $ui-button--active-backgroundColor
+
+.folderList-item-name
+  display block
+  flex 1
+  padding 0 30px
+  height 26px
+  line-height 26px
+  border-width 0 0 0 3px
+  border-style solid
+  border-color transparent
+
+.folderList-item-noteCount
+  float right
+  line-height 26px
+  padding-right 5px
+  font-size 12px
+
+.folderList-item-tooltip
+  tooltip()
+  position fixed
+  padding 0 10px
+  left 44px
+  z-index 10
+  pointer-events none
+  opacity 0
+  border-top-right-radius 2px
+  border-bottom-right-radius 2px
+  height 26px
+  line-height 26px
+
+.folderList-item:hover, .folderList-item--active:hover
+  .folderList-item-tooltip
+    opacity 1
+
+.folderList-item-name--folded
+  @extend .folderList-item-name
+  padding-left 14px