feat(RTL): implement RTL

Using RTLCSS directives, renaming things to use logical names and following best practices.

js/src/carousel.js

@@ -79,8 +79,8 @@ const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`
 const CLASS_NAME_CAROUSEL = 'carousel'
 const CLASS_NAME_ACTIVE = 'active'
 const CLASS_NAME_SLIDE = 'slide'
-const CLASS_NAME_RIGHT = 'carousel-item-right'
-const CLASS_NAME_LEFT = 'carousel-item-left'
+const CLASS_NAME_END = 'carousel-item-end'
+const CLASS_NAME_START = 'carousel-item-start'
 const CLASS_NAME_NEXT = 'carousel-item-next'
 const CLASS_NAME_PREV = 'carousel-item-prev'
 const CLASS_NAME_POINTER_EVENT = 'pointer-event'
@@ -442,11 +442,11 @@ class Carousel extends BaseComponent {
     let eventDirectionName
 
     if (direction === DIRECTION_NEXT) {
-      directionalClassName = CLASS_NAME_LEFT
+      directionalClassName = CLASS_NAME_START
       orderClassName = CLASS_NAME_NEXT
       eventDirectionName = DIRECTION_LEFT
     } else {
-      directionalClassName = CLASS_NAME_RIGHT
+      directionalClassName = CLASS_NAME_END
       orderClassName = CLASS_NAME_PREV
       eventDirectionName = DIRECTION_RIGHT
     }

js/src/dropdown.js

@@ -11,6 +11,7 @@ import {
   getElementFromSelector,
   isElement,
   isVisible,
+  isRTL,
   noop,
   typeCheckConfig
 } from './util/index'
@@ -53,9 +54,9 @@ const EVENT_KEYUP_DATA_API = `keyup${EVENT_KEY}${DATA_API_KEY}`
 const CLASS_NAME_DISABLED = 'disabled'
 const CLASS_NAME_SHOW = 'show'
 const CLASS_NAME_DROPUP = 'dropup'
-const CLASS_NAME_DROPRIGHT = 'dropright'
-const CLASS_NAME_DROPLEFT = 'dropleft'
-const CLASS_NAME_MENURIGHT = 'dropdown-menu-right'
+const CLASS_NAME_DROPEND = 'dropend'
+const CLASS_NAME_DROPSTART = 'dropstart'
+const CLASS_NAME_MENUEND = 'dropdown-menu-end'
 const CLASS_NAME_NAVBAR = 'navbar'
 const CLASS_NAME_POSITION_STATIC = 'position-static'
 
@@ -65,12 +66,12 @@ const SELECTOR_MENU = '.dropdown-menu'
 const SELECTOR_NAVBAR_NAV = '.navbar-nav'
 const SELECTOR_VISIBLE_ITEMS = '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)'
 
-const PLACEMENT_TOP = 'top-start'
-const PLACEMENT_TOPEND = 'top-end'
-const PLACEMENT_BOTTOM = 'bottom-start'
-const PLACEMENT_BOTTOMEND = 'bottom-end'
-const PLACEMENT_RIGHT = 'right-start'
-const PLACEMENT_LEFT = 'left-start'
+const PLACEMENT_TOP = isRTL ? 'top-end' : 'top-start'
+const PLACEMENT_TOPEND = isRTL ? 'top-start' : 'top-end'
+const PLACEMENT_BOTTOM = isRTL ? 'bottom-end' : 'bottom-start'
+const PLACEMENT_BOTTOMEND = isRTL ? 'bottom-start' : 'bottom-end'
+const PLACEMENT_RIGHT = isRTL ? 'left-start' : 'right-start'
+const PLACEMENT_LEFT = isRTL ? 'right-start' : 'left-start'
 
 const Default = {
   offset: 0,
@@ -277,14 +278,14 @@ class Dropdown extends BaseComponent {
 
     // Handle dropup
     if (parentDropdown.classList.contains(CLASS_NAME_DROPUP)) {
-      placement = this._menu.classList.contains(CLASS_NAME_MENURIGHT) ?
+      placement = this._menu.classList.contains(CLASS_NAME_MENUEND) ?
         PLACEMENT_TOPEND :
         PLACEMENT_TOP
-    } else if (parentDropdown.classList.contains(CLASS_NAME_DROPRIGHT)) {
+    } else if (parentDropdown.classList.contains(CLASS_NAME_DROPEND)) {
       placement = PLACEMENT_RIGHT
-    } else if (parentDropdown.classList.contains(CLASS_NAME_DROPLEFT)) {
+    } else if (parentDropdown.classList.contains(CLASS_NAME_DROPSTART)) {
       placement = PLACEMENT_LEFT
-    } else if (this._menu.classList.contains(CLASS_NAME_MENURIGHT)) {
+    } else if (this._menu.classList.contains(CLASS_NAME_MENUEND)) {
       placement = PLACEMENT_BOTTOMEND
     }
 

js/src/modal.js

@@ -13,6 +13,7 @@ import {
   getElementFromSelector,
   getTransitionDurationFromElement,
   isVisible,
+  isRTL,
   reflow,
   typeCheckConfig
 } from './util/index'
@@ -435,11 +436,11 @@ class Modal extends BaseComponent {
     const isModalOverflowing =
       this._element.scrollHeight > document.documentElement.clientHeight
 
-    if (!this._isBodyOverflowing && isModalOverflowing) {
+    if ((!this._isBodyOverflowing && isModalOverflowing && !isRTL) || (this._isBodyOverflowing && !isModalOverflowing && isRTL)) {
       this._element.style.paddingLeft = `${this._scrollbarWidth}px`
     }
 
-    if (this._isBodyOverflowing && !isModalOverflowing) {
+    if ((this._isBodyOverflowing && !isModalOverflowing && !isRTL) || (!this._isBodyOverflowing && isModalOverflowing && isRTL)) {
       this._element.style.paddingRight = `${this._scrollbarWidth}px`
     }
   }

js/src/popover.js

@@ -115,7 +115,7 @@ class Popover extends Tooltip {
   // Private
 
   _addAttachmentClass(attachment) {
-    this.getTipElement().classList.add(`${CLASS_PREFIX}-${attachment}`)
+    this.getTipElement().classList.add(`${CLASS_PREFIX}-${this.updateAttachment(attachment)}`)
   }
 
   _getContent() {

js/src/tooltip.js

@@ -14,6 +14,7 @@ import {
   getTransitionDurationFromElement,
   getUID,
   isElement,
+  isRTL,
   noop,
   typeCheckConfig
 } from './util/index'
@@ -64,9 +65,9 @@ const DefaultType = {
 const AttachmentMap = {
   AUTO: 'auto',
   TOP: 'top',
-  RIGHT: 'right',
+  RIGHT: isRTL ? 'left' : 'right',
   BOTTOM: 'bottom',
-  LEFT: 'left'
+  LEFT: isRTL ? 'right' : 'left'
 }
 
 const Default = {
@@ -453,6 +454,18 @@ class Tooltip extends BaseComponent {
     return title
   }
 
+  updateAttachment(attachment) {
+    if (attachment === 'right') {
+      return 'end'
+    }
+
+    if (attachment === 'left') {
+      return 'start'
+    }
+
+    return attachment
+  }
+
   // Private
 
   _getPopperConfig(attachment) {
@@ -485,7 +498,7 @@ class Tooltip extends BaseComponent {
   }
 
   _addAttachmentClass(attachment) {
-    this.getTipElement().classList.add(`${CLASS_PREFIX}-${attachment}`)
+    this.getTipElement().classList.add(`${CLASS_PREFIX}-${this.updateAttachment(attachment)}`)
   }
 
   _getOffset() {

js/src/util/index.js

@@ -186,6 +186,8 @@ const onDOMContentLoaded = callback => {
   }
 }
 
+const isRTL = document.documentElement.dir === 'rtl'
+
 export {
   TRANSITION_END,
   getUID,
@@ -201,5 +203,6 @@ export {
   noop,
   reflow,
   getjQuery,
-  onDOMContentLoaded
+  onDOMContentLoaded,
+  isRTL
 }