From e4626ee52b35debb73a92799d879e9f1010f03db Mon Sep 17 00:00:00 2001
From: Nick O'Leary <nick.oleary@gmail.com>
Date: Mon, 26 Sep 2016 22:56:28 +0100
Subject: [PATCH] =?UTF-8?q?Scrollable=20tabs=20=F0=9F=91=8D?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 editor/js/ui/common/tabs.js |  98 ++++++++++++--
 editor/js/ui/workspaces.js  |   7 +-
 editor/sass/tabs.scss       | 255 +++++++++++++++++++++++-------------
 editor/sass/workspace.scss  |  27 ----
 editor/templates/index.mst  |   1 -
 5 files changed, 258 insertions(+), 130 deletions(-)

diff --git a/editor/js/ui/common/tabs.js b/editor/js/ui/common/tabs.js
index 5712ef15a..c95b34f4f 100644
--- a/editor/js/ui/common/tabs.js
+++ b/editor/js/ui/common/tabs.js
@@ -17,15 +17,58 @@
 
 
 RED.tabs = (function() {
-
-
     function createTabs(options) {
         var tabs = {};
         var currentTabWidth;
         var currentActiveTabWidth = 0;
 
         var ul = $("#"+options.id);
-        ul.addClass("red-ui-tabs");
+        var wrapper = ul.wrap( "<div>" ).parent();
+        var scrollContainer = ul.wrap( "<div>" ).parent();
+        wrapper.addClass("red-ui-tabs");
+        if (options.addButton && typeof options.addButton === 'function') {
+            wrapper.addClass("red-ui-tabs-add");
+            var addButton = $('<div class="red-ui-tab-button"><a href="#"><i class="fa fa-plus"></i></a></div>').appendTo(wrapper);
+            addButton.find('a').click(function(evt) {
+                evt.preventDefault();
+                options.addButton();
+            })
+
+        }
+        var scrollLeft;
+        var scrollRight;
+
+        if (options.scrollable) {
+            wrapper.addClass("red-ui-tabs-scrollable");
+            scrollContainer.addClass("red-ui-tabs-scroll-container");
+            scrollContainer.scroll(updateScroll);
+            scrollLeft = $('<div class="red-ui-tab-button red-ui-tab-scroll red-ui-tab-scroll-left"><a href="#" style="display:none;"><i class="fa fa-caret-left"></i></a></div>').appendTo(wrapper).find("a");
+            scrollLeft.on('mousedown',function(evt) { scrollEventHandler(evt,'-=150') });
+            scrollRight = $('<div class="red-ui-tab-button red-ui-tab-scroll red-ui-tab-scroll-right"><a href="#" style="display:none;"><i class="fa fa-caret-right"></i></a></div>').appendTo(wrapper).find("a");
+            scrollRight.on('mousedown',function(evt) { scrollEventHandler(evt,'+=150') });
+        }
+        function scrollEventHandler(evt,dir) {
+            evt.preventDefault();
+            if ($(this).hasClass('disabled')) {
+                return;
+            }
+            var currentScrollLeft = scrollContainer.scrollLeft();
+            scrollContainer.animate( { scrollLeft: dir }, 300);
+            var interval = setInterval(function() {
+                var newScrollLeft = scrollContainer.scrollLeft()
+                if (newScrollLeft === currentScrollLeft) {
+                    clearInterval(interval);
+                    return;
+                }
+                currentScrollLeft = newScrollLeft;
+                scrollContainer.animate( { scrollLeft: dir }, 300);
+            },300);
+            $(this).one('mouseup',function() {
+                clearInterval(interval);
+            })
+        }
+
+
         ul.children().first().addClass("active");
         ul.children().addClass("red-ui-tab");
 
@@ -34,6 +77,23 @@ RED.tabs = (function() {
             return false;
         }
 
+        function updateScroll() {
+            if (ul.children().length !== 0) {
+                var sl = scrollContainer.scrollLeft();
+                var scWidth = scrollContainer.width();
+                var ulWidth = ul.width();
+                if (sl === 0) {
+                    scrollLeft.hide();
+                } else {
+                    scrollLeft.show();
+                }
+                if (sl === ulWidth-scWidth) {
+                    scrollRight.hide();
+                } else {
+                    scrollRight.show();
+                }
+            }
+        }
         function onTabDblClick() {
             if (options.ondblclick) {
                 options.ondblclick(tabs[$(this).attr('href').slice(1)]);
@@ -49,6 +109,14 @@ RED.tabs = (function() {
                 ul.children().removeClass("active");
                 ul.children().css({"transition": "width 100ms"});
                 link.parent().addClass("active");
+                if (options.scrollable) {
+                    var pos = link.parent().position().left;
+                    if (pos-21 < 0) {
+                        scrollContainer.animate( { scrollLeft: '+='+(pos-50) }, 300);
+                    } else if (pos + 120 > scrollContainer.width()) {
+                        scrollContainer.animate( { scrollLeft: '+='+(pos + 140-scrollContainer.width()) }, 300);
+                    }
+                }
                 if (options.onchange) {
                     options.onchange(tabs[link.attr('href').slice(1)]);
                 }
@@ -61,23 +129,29 @@ RED.tabs = (function() {
 
         function updateTabWidths() {
             var tabs = ul.find("li.red-ui-tab");
-            var width = ul.width();
+            var width = wrapper.width();
             var tabCount = tabs.size();
             var tabWidth = (width-12-(tabCount*6))/tabCount;
-            currentTabWidth = 100*tabWidth/width;
+            currentTabWidth = (100*tabWidth/width)+"%";
             currentActiveTabWidth = currentTabWidth+"%";
-
-            if (options.hasOwnProperty("minimumActiveTabWidth")) {
+            if (options.scrollable) {
+                tabWidth = Math.max(tabWidth,140);
+                currentTabWidth = tabWidth+"px";
+                currentActiveTabWidth = 0;
+                var listWidth = Math.max(wrapper.width(),12+(tabWidth+6)*tabCount);
+                ul.width(listWidth);
+                updateScroll();
+            } else if (options.hasOwnProperty("minimumActiveTabWidth")) {
                 if (tabWidth < options.minimumActiveTabWidth) {
                     tabCount -= 1;
                     tabWidth = (width-12-options.minimumActiveTabWidth-(tabCount*6))/tabCount;
-                    currentTabWidth = 100*tabWidth/width;
+                    currentTabWidth = (100*tabWidth/width)+"%";
                     currentActiveTabWidth = options.minimumActiveTabWidth+"px";
                 } else {
                     currentActiveTabWidth = 0;
                 }
             }
-            tabs.css({width:currentTabWidth+"%"});
+            tabs.css({width:currentTabWidth});
             if (tabWidth < 50) {
                 ul.find(".red-ui-tab-close").hide();
                 ul.find(".red-ui-tab-icon").hide();
@@ -97,7 +171,9 @@ RED.tabs = (function() {
         }
 
         ul.find("li.red-ui-tab a").on("click",onTabClick).on("dblclick",onTabDblClick);
-        updateTabWidths();
+        setTimeout(function() {
+            updateTabWidths();
+        },0);
 
 
         function removeTab(id) {
@@ -210,8 +286,6 @@ RED.tabs = (function() {
                                     break;
                                 }
                             }
-
-                            // console.log(ui.position.left,ui.offset.left);
                         },
                         stop: function(event,ui) {
                             ul.children().css({position:"relative",left:"",transition:""});
diff --git a/editor/js/ui/workspaces.js b/editor/js/ui/workspaces.js
index e6b5f5994..9817a5a11 100644
--- a/editor/js/ui/workspaces.js
+++ b/editor/js/ui/workspaces.js
@@ -166,13 +166,16 @@ RED.workspaces = (function() {
                 RED.nodes.dirty(true);
                 setWorkspaceOrder(newOrder);
             },
-            minimumActiveTabWidth: 150
+            minimumActiveTabWidth: 150,
+            scrollable: true,
+            addButton: function() {
+                addWorkspace();
+            }
         });
     }
 
     function init() {
         createWorkspaceTabs();
-        $('#btn-workspace-add-tab').on("click",function(e) {addWorkspace(); e.preventDefault()});
         RED.events.on("sidebar:resize",workspace_tabs.resize);
 
         RED.menu.setAction('menu-item-workspace-delete',function() {
diff --git a/editor/sass/tabs.scss b/editor/sass/tabs.scss
index b441d1550..c848459e2 100644
--- a/editor/sass/tabs.scss
+++ b/editor/sass/tabs.scss
@@ -1,5 +1,5 @@
 /**
- * Copyright 2015 IBM Corp.
+ * Copyright 2015, 2016 IBM Corp.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,47 +14,174 @@
  * limitations under the License.
  **/
 
-ul.red-ui-tabs {
-    list-style-type: none;
-    padding:0;
-    margin: 0;
-    display: block;
-    height: 35px;
-    box-sizing:border-box;
-    white-space: nowrap;
-    border-bottom: 1px solid $primary-border-color;
-    background: #fff;
-    @include disable-selection;
-}
-
-ul.red-ui-tabs li {
-    box-sizing: border-box;
-    display: inline-block;
-    border-left: 1px solid  $primary-border-color;
-    border-top: 1px solid  $primary-border-color;
-    border-right: 1px solid $primary-border-color;
-    border-bottom: 1px solid $primary-border-color;
-    background: $tab-background-inactive;
-    margin: 3px 3px 0 3px;
-    height: 32px;
-    line-height: 29px;
-    max-width: 200px;
-    width: 14%;
-    overflow: hidden;
-    white-space: nowrap;
-}
-
-ul.red-ui-tabs li a.red-ui-tab-label {
-    display: block;
-    font-size: 14px;
-    padding-left: 12px;
-    width: 100%;
-    height: 100%;
-    color: #666;
-}
-ul.red-ui-tabs li {
+.red-ui-tabs {
     position: relative;
+    background: #fff;
+    overflow: hidden;
+    height: 35px;
+    box-sizing: border-box;
+
+    .red-ui-tabs-scroll-container {
+        height: 60px;
+        overflow-x: scroll;
+        overflow-y: hidden;
+        &::-webkit-scrollbar {
+            display: none;
+        }
+    }
+    & ul {
+        //background: #9999ff;
+        list-style-type: none;
+        padding:0;
+        margin: 0;
+        display: block;
+        height: 35px;
+        box-sizing:border-box;
+        border-bottom: 1px solid $primary-border-color;
+        white-space: nowrap;
+        @include disable-selection;
+
+        li {
+            box-sizing: border-box;
+            display: inline-block;
+            border-left: 1px solid  $primary-border-color;
+            border-top: 1px solid  $primary-border-color;
+            border-right: 1px solid $primary-border-color;
+            border-bottom: 1px solid $primary-border-color;
+            background: $tab-background-inactive;
+            margin: 3px 3px 0 3px;
+            height: 32px;
+            line-height: 29px;
+            max-width: 200px;
+            width: 14%;
+            overflow: hidden;
+            white-space: nowrap;
+            position: relative;
+
+            a.red-ui-tab-label {
+                display: block;
+                font-size: 14px;
+                padding-left: 12px;
+                width: 100%;
+                height: 100%;
+                color: #666;
+            }
+            a:hover {
+                text-decoration: none;
+            }
+            a:focus {
+                text-decoration: none;
+            }
+
+            &:not(.active) a:hover+a.red-ui-tab-close {
+                background: $tab-background-hover;
+            }
+            &.active {
+                background: $tab-background-active;
+                font-weight: bold;
+                border-bottom: 1px solid #fff;
+                z-index: 2;
+
+                a {
+                    color: #333;
+                }
+                a.red-ui-tab-close {
+                    color: #aaa;
+                    background: $tab-background-active;
+                    &:hover {
+                        background: $workspace-button-background-hover !important;
+                        color: $workspace-button-color-hover;
+                    }
+                }
+                .red-ui-tab-icon {
+                    opacity: 0.2;
+                }
+            }
+            &:not(.active) a:hover {
+                color: $workspace-button-color-hover;
+                background: $tab-background-hover;
+            }
+        }
+    }
+    &.red-ui-tabs-scrollable {
+        padding-left: 21px;
+        padding-right: 21px;
+    }
+    &.red-ui-tabs-add {
+        padding-right: 35px;
+    }
+    &.red-ui-tabs-add.red-ui-tabs-scrollable {
+        padding-right: 59px;
+    }
 }
+.red-ui-tab-button {
+    position: absolute;
+    box-sizing: border-box;
+    top: 0;
+    right: 0;
+    height: 35px;
+    background: #fff;
+    border-bottom: 1px solid $primary-border-color;
+    z-index: 3;
+
+    a {
+        @include workspace-button;
+        line-height: 32px;
+        height: 32px;
+        width: 32px;
+        margin-top: 3px;
+        margin-right:3px;
+        margin-left:3px;
+        border: 1px solid $primary-border-color;
+        z-index: 3;
+    }
+}
+
+.red-ui-tab-scroll {
+    width: 21px;
+    top: 0;
+    a {
+        height: 35px;
+        width: 21px;
+        display: block;
+        color: $link-color;
+        font-size: 22px;
+        text-align: center;
+        margin:0;
+        border-left: none;
+        border-right: none;
+        border-top: none;
+    }
+}
+.red-ui-tab-scroll-left {
+    left:0;
+    a {
+        border-right: 1px solid $primary-border-color;
+        // box-shadow: 8px 0px 5px -2px rgba(0,0,0,0.1);
+    }
+}
+.red-ui-tab-scroll-right {
+    right: 0px;
+    a {
+        border-left: 1px solid $primary-border-color;
+        // box-shadow: -8px 0px 5px -2px rgba(0,0,0,0.1);
+    }
+
+}
+.red-ui-tabs.red-ui-tabs-add .red-ui-tab-scroll-right {
+    right: 38px;
+}
+
+.red-ui-tab-icon {
+    margin-left: -8px;
+    margin-right: 3px;
+    margin-top: -2px;
+    opacity: 0.1;
+    width: 20px;
+    height: 20px;
+    vertical-align: middle;
+}
+
 .red-ui-tabs-badges {
     position: absolute;
     top:2px;
@@ -96,51 +223,3 @@ ul.red-ui-tabs li {
         opacity: 1;
     }
 }
-ul.red-ui-tabs li:not(.active) a:hover+a.red-ui-tab-close {
-    background: $tab-background-hover;
-}
-
-ul.red-ui-tabs li.active a.red-ui-tab-close {
-    color: #aaa;
-    background: $tab-background-active;
-    &:hover {
-        background: $workspace-button-background-hover !important;
-        color: $workspace-button-color-hover;
-    }
-}
-
-ul.red-ui-tabs li a:hover {
-    text-decoration: none;
-}
-
-ul.red-ui-tabs li:not(.active) a:hover {
-    color: $workspace-button-color-hover;
-    background: $tab-background-hover;
-}
-
-ul.red-ui-tabs li a:focus {
-    text-decoration: none;
-}
-
-ul.red-ui-tabs li.active {
-    background: $tab-background-active;
-    font-weight: bold;
-    border-bottom: 1px solid #fff;
-    z-index: 2;
-}
-ul.red-ui-tabs li.active a {
-    color: #333;
-}
-
-.red-ui-tab-icon {
-    margin-left: -8px;
-    margin-right: 3px;
-    margin-top: -2px;
-    opacity: 0.1;
-    width: 20px;
-    height: 20px;
-    vertical-align: middle;
-}
-ul.red-ui-tabs li.active .red-ui-tab-icon {
-    opacity: 0.2;
-}
diff --git a/editor/sass/workspace.scss b/editor/sass/workspace.scss
index d23d5cb81..0d27a97f1 100644
--- a/editor/sass/workspace.scss
+++ b/editor/sass/workspace.scss
@@ -48,33 +48,6 @@
     @include component-footer-button;
 }
 
-#workspace-tabs {
-    margin-right: 35px;
-}
-
-
-
-#workspace-add-tab {
-    position: absolute;
-    box-sizing: border-box;
-    top: 0;
-    right: 0;
-    height: 35px;
-    width: 35px;
-    background: #fff;
-    border-bottom: 1px solid $primary-border-color;
-}
-
-#btn-workspace-add-tab {
-    @include workspace-button;
-    line-height: 32px;
-    height: 32px;
-    width: 32px;
-    margin-top: 3px;
-    margin-right:3px;
-    border: 1px solid $primary-border-color;
-}
-
 #workspace-footer {
     @include component-footer;
 }
diff --git a/editor/templates/index.mst b/editor/templates/index.mst
index 0d9bdb313..f3b7b22b9 100644
--- a/editor/templates/index.mst
+++ b/editor/templates/index.mst
@@ -45,7 +45,6 @@
 <div id="main-container" class="sidebar-closed hide">
     <div id="workspace">
         <ul id="workspace-tabs"></ul>
-        <div id="workspace-add-tab"><a id="btn-workspace-add-tab" href="#"><i class="fa fa-plus"></i></a></div>
         <div id="chart" tabindex="1"></div>
         <div id="workspace-toolbar"></div>
         <div id="workspace-footer">