From 113a477618f2795f1e3b6dd846c99cd4fab13a09 Mon Sep 17 00:00:00 2001
From: REJack <info@rejack.de>
Date: Sat, 3 Oct 2020 15:12:06 +0200
Subject: [PATCH] add scroll buttons for navbar items

---
 build/js/IFrame.js | 54 +++++++++++++++++++++++++++++++++++++++++++++-
 iframe.html        |  2 ++
 2 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/build/js/IFrame.js b/build/js/IFrame.js
index 79f5c2cfe..15341c187 100644
--- a/build/js/IFrame.js
+++ b/build/js/IFrame.js
@@ -18,6 +18,8 @@ const JQUERY_NO_CONFLICT = $.fn[NAME]
 
 const SELECTOR_DATA_TOGGLE = '[data-widget="iframe"]'
 const SELECTOR_DATA_TOGGLE_CLOSE = '[data-widget="iframe-close"]'
+const SELECTOR_DATA_TOGGLE_SCROLL_LEFT = '[data-widget="iframe-scrollleft"]'
+const SELECTOR_DATA_TOGGLE_SCROLL_RIGHT = '[data-widget="iframe-scrollright"]'
 const SELECTOR_CONTENT_WRAPPER = '.content-wrapper'
 const SELECTOR_CONTENT_IFRAME = `${SELECTOR_CONTENT_WRAPPER} iframe`
 const SELECTOR_TAB_NAV = `${SELECTOR_DATA_TOGGLE}.iframe-mode .nav`
@@ -45,7 +47,9 @@ const Default = {
   autoItemActive: true,
   autoShowNewTab: true,
   loadingScreen: true,
-  useNavbarItems: true
+  useNavbarItems: true,
+  scrollOffset: 40,
+  scrollBehaviorSwap: false
 }
 
 /**
@@ -171,6 +175,11 @@ class IFrame {
     }
   }
 
+  _navScroll(offset) {
+    const leftPos = $(SELECTOR_TAB_NAVBAR_NAV).scrollLeft()
+    $(SELECTOR_TAB_NAVBAR_NAV).animate({ scrollLeft: (leftPos + offset) }, 250, 'linear')
+  }
+
   _setupListeners() {
     $(window).on('resize', () => {
       setTimeout(() => {
@@ -198,6 +207,49 @@ class IFrame {
       e.preventDefault()
       this.removeActiveTab()
     })
+    let mousedown = false
+    let mousedownInterval = null
+    $(document).on('mousedown', SELECTOR_DATA_TOGGLE_SCROLL_LEFT, e => {
+      e.preventDefault()
+      clearInterval(mousedownInterval)
+
+      let { scrollOffset } = this._config
+
+      if (!this._config.scrollBehaviorSwap) {
+        scrollOffset = -scrollOffset
+      }
+
+      mousedown = true
+      this._navScroll(scrollOffset)
+
+      mousedownInterval = setInterval(() => {
+        this._navScroll(scrollOffset)
+      }, 250)
+    })
+    $(document).on('mousedown', SELECTOR_DATA_TOGGLE_SCROLL_RIGHT, e => {
+      e.preventDefault()
+      clearInterval(mousedownInterval)
+
+      let { scrollOffset } = this._config
+
+      if (this._config.scrollBehaviorSwap) {
+        scrollOffset = -scrollOffset
+      }
+
+      mousedown = true
+      this._navScroll(scrollOffset)
+
+      mousedownInterval = setInterval(() => {
+        this._navScroll(scrollOffset)
+      }, 250)
+    })
+    $(document).on('mouseup', () => {
+      if (mousedown) {
+        mousedown = false
+        clearInterval(mousedownInterval)
+        mousedownInterval = null
+      }
+    })
   }
 
   _setItemActive(href) {
diff --git a/iframe.html b/iframe.html
index f260a44e6..9b279752e 100644
--- a/iframe.html
+++ b/iframe.html
@@ -744,7 +744,9 @@
   <div class="content-wrapper iframe-mode" data-widget="iframe" data-loading-screen="750">
     <div class="nav navbar navbar-expand-lg navbar-white navbar-light border-bottom p-0">
       <a class="nav-link bg-danger" href="#" data-widget="iframe-close">Close</a>
+      <a class="nav-link bg-light" href="#" data-widget="iframe-scrollleft"><i class="fas fa-angle-double-left"></i></a>
       <ul class="navbar-nav" role="tablist"></ul>
+      <a class="nav-link bg-light" href="#" data-widget="iframe-scrollright"><i class="fas fa-angle-double-right"></i></a>
     </div>
     <div class="tab-content">
       <div class="tab-empty">