From 97d2e9ec1ddcb2d58702290960bcb858cae3dce4 Mon Sep 17 00:00:00 2001
From: Kirill Shumilov <brusher.designer@gmail.com>
Date: Tue, 23 Aug 2016 20:28:07 +0300
Subject: [PATCH] feat(tabs, sortables): add tabs reordering feature

---
 package.json                                  |  1 +
 .../styles/components/TabsItem.scss           |  3 +
 src/client/editor/components/TabsItem.jsx     |  4 +-
 src/client/editor/containers/Tabs.jsx         | 79 ++++++++++++++++---
 src/client/utils/array.js                     | 19 +++++
 5 files changed, 94 insertions(+), 12 deletions(-)
 create mode 100644 src/client/utils/array.js

diff --git a/package.json b/package.json
index 7c14bdfe..9720fbb0 100644
--- a/package.json
+++ b/package.json
@@ -44,6 +44,7 @@
     "react-hotkeys": "git+https://github.com/brusherru/react-hotkeys.git#npm",
     "react-redux": "^4.0.6",
     "react-skylight": "^0.4.0",
+    "react-sortable-hoc": "0.0.7",
     "react-ui-tree": "^2.5.0",
     "redux": "^3.0.5",
     "redux-thunk": "^2.1.0",
diff --git a/src/client/app-browser/styles/components/TabsItem.scss b/src/client/app-browser/styles/components/TabsItem.scss
index ba9b527c..394ede11 100644
--- a/src/client/app-browser/styles/components/TabsItem.scss
+++ b/src/client/app-browser/styles/components/TabsItem.scss
@@ -5,6 +5,8 @@
   padding: 0 10px 0 14px;
   height: 26px;
 
+  box-sizing: border-box;
+
   background: $color-tabs-unactive-background;
   color: $color-tabs-unactive-text;
   line-height: 30px;
@@ -13,6 +15,7 @@
   border-top-left-radius: 4px;
   text-shadow: 0 1px 0 rgba(0,0,0, .5);
   cursor: default;
+  white-space: nowrap;
 
   transition: 0.1s ease-out all;
 
diff --git a/src/client/editor/components/TabsItem.jsx b/src/client/editor/components/TabsItem.jsx
index 5070106c..3f7e5372 100644
--- a/src/client/editor/components/TabsItem.jsx
+++ b/src/client/editor/components/TabsItem.jsx
@@ -15,14 +15,14 @@ const TabsItem = ({ data, onClick, onClose }) => {
   return (
     <li
       className={classes}
-      onClick={handleClick}
+      onMouseDown={handleClick}
     >
       <span className="tab-name">
         {data.name}
       </span>
       <span
         className="tab-close"
-        onClick={handleClose}
+        onMouseDown={handleClose}
       >
         &times;
       </span>
diff --git a/src/client/editor/containers/Tabs.jsx b/src/client/editor/containers/Tabs.jsx
index bd51c376..19786eee 100644
--- a/src/client/editor/containers/Tabs.jsx
+++ b/src/client/editor/containers/Tabs.jsx
@@ -5,15 +5,65 @@ import { bindActionCreators } from 'redux';
 import * as Actions from '../actions';
 import * as EditorSelectors from '../selectors';
 
+import { arrayMoveIndex, arrayUpdateIndex, arrayIndexById } from 'xod/client/utils/array';
+
+import {
+  SortableContainer as sortableContainer,
+  SortableElement as sortableElement,
+} from 'react-sortable-hoc';
+
 import TabsContainer from '../components/TabsContainer';
 import TabsItem from '../components/TabsItem';
 
+const SortableItem = sortableElement(
+  ({ value }) => {
+    return (
+      <TabsItem
+        key={value.id}
+        data={value}
+        onClick={value.onClick}
+        onClose={value.onClose}
+      />
+    );
+  }
+);
+
+const SortableList = sortableContainer(
+  ({ items, onClick, onClose }) => (
+    <TabsContainer>
+      {items.map((value, index) => {
+        const item = R.merge(
+          value,
+          {
+            onClick,
+            onClose,
+          }
+        );
+
+        return (
+          <SortableItem
+            key={`item-${value.id}`}
+            index={index}
+            value={item}
+
+            onClick={onClick}
+            onClose={onClose}
+          />
+        );
+      }
+      )}
+    </TabsContainer>
+  )
+);
+
+
 class Tabs extends React.Component {
   constructor(props) {
     super(props);
 
     this.onSwitchPatch = this.onSwitchPatch.bind(this);
     this.onCloseTab = this.onCloseTab.bind(this);
+    this.onSortEnd = this.onSortEnd.bind(this);
   }
 
   onSwitchPatch(patchId) {
@@ -24,6 +74,14 @@ class Tabs extends React.Component {
     return this.props.actions.closeTab(patchId);
   }
 
+  onSortEnd(changes) {
+    const sortedTabs = arrayMoveIndex(changes.oldIndex, changes.newIndex, this.getTabs());
+    const newTabs = arrayUpdateIndex(sortedTabs);
+    const indexedTabs = arrayIndexById(newTabs);
+
+    this.props.actions.sortTabs(indexedTabs);
+  }
+
   getTabs() {
     return R.sortBy(
       R.prop('index')
@@ -33,16 +91,17 @@ class Tabs extends React.Component {
   render() {
     const tabs = this.getTabs();
     return (
-      <TabsContainer>
-        {tabs.map(tab =>
-          <TabsItem
-            key={tab.id}
-            data={tab}
-            onClick={this.onSwitchPatch}
-            onClose={this.onCloseTab}
-          />
-        )}
-      </TabsContainer>
+      <SortableList
+        items={tabs}
+        onSortEnd={this.onSortEnd}
+        axis="x"
+        lockAxis="x"
+        lockToContainerEdges
+        lockOffset="0%"
+
+        onClick={this.onSwitchPatch}
+        onClose={this.onCloseTab}
+      />
     );
   }
 }
diff --git a/src/client/utils/array.js b/src/client/utils/array.js
new file mode 100644
index 00000000..9f10f3a2
--- /dev/null
+++ b/src/client/utils/array.js
@@ -0,0 +1,19 @@
+import R from 'ramda';
+
+const mapIndexed = R.addIndex(R.map);
+
+export const arrayMoveIndex = R.curry(
+  (oldIndex, newIndex, array) => {
+    const oldItem = R.nth(oldIndex, array);
+    const newItem = R.nth(newIndex, array);
+
+    return R.pipe(
+      R.update(oldIndex, newItem),
+      R.update(newIndex, oldItem)
+    )(array);
+  }
+);
+
+export const arrayUpdateIndex = mapIndexed((item, index) => R.assoc('index', index, item));
+
+export const arrayIndexById = R.indexBy(R.prop('id'));