From 2851fb4b4545e4fa8262d510f7ffe5e9f3b3997c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=98=D0=BB=D1=8C=D1=8F=20=D0=9A=D0=BE=D0=BB=D0=B4=D1=83?=
 =?UTF-8?q?=D0=BD=D0=BE=D0=B2?= <gigafiga21@gmail.com>
Date: Fri, 24 Nov 2017 21:35:14 +0200
Subject: [PATCH] Fully removed stack from program (issue #3)

---
 CSS/RISE.CSS |  8 ------
 EXAMPLE.HTML |  3 +-
 JS/RISE.JS   | 79 ++++++++++++++++++++++++++++++++++++++++++----------
 3 files changed, 66 insertions(+), 24 deletions(-)

diff --git a/CSS/RISE.CSS b/CSS/RISE.CSS
index f7301c2..bbbba78 100644
--- a/CSS/RISE.CSS
+++ b/CSS/RISE.CSS
@@ -8,17 +8,9 @@
     TRANSITION:NONE !IMPORTANT;
 }
 
-.RISE__SHIELD
-{
-    POSITION:ABSOLUTE;
-    WIDTH:100%;
-    HEIGHT:100%;
-}
-
 .RISE__CONTAINER
 {
     POSITION:RELATIVE;
-    DISPLAY:FLEX;
     WIDTH:100%;
 }
 
diff --git a/EXAMPLE.HTML b/EXAMPLE.HTML
index 08878a8..52ebdbc 100644
--- a/EXAMPLE.HTML
+++ b/EXAMPLE.HTML
@@ -63,6 +63,7 @@
         {
             tabId++;
             var tab = interface.createTab(tabId);
+            tab.dataset.previous = tabId - 1;
             renderTab(tab);
             interface.showTab(tabId);
         }
@@ -74,7 +75,7 @@
 
         function hideTab(event)
         {
-            interface.hideTab(event.target.parentNode.parentNode.dataset.id);
+            interface.showTab(event.target.parentNode.parentNode.dataset.previous);
         }
 
         function renderTab(tab)
diff --git a/JS/RISE.JS b/JS/RISE.JS
index 4a39c36..293b4eb 100644
--- a/JS/RISE.JS
+++ b/JS/RISE.JS
@@ -31,7 +31,6 @@ function Interface(parent, params)
 
     var timer = undefined,
         current = undefined,
-        stack = [],
         order = [],
         properties =
         {
@@ -85,8 +84,8 @@ function Interface(parent, params)
     /**
      * Returns a tab name
      *
-     * @param {Element}  - DOM-Element in tab
-     * @return {Element} - name of the found tab
+     * @param {Element} element - DOM-Element in tab
+     * @return {Element}        - name of the found tab
      */
     this.getTabName = function(element)
     {
@@ -106,6 +105,36 @@ function Interface(parent, params)
         return undefined;
     }
 
+    /**
+     * Return a direction of swiping
+     *
+     * @param {String} start - name of the tab where swipe starts
+     * @param {String} end   - name of the tab where swipe ends
+     * @return {Number}      - 1 if swipe is to right, 0 if start equals end, else -1
+     */
+    function getSwipeDirection(start, end)
+    {
+        if (DOM.tabs[start] && DOM.tabs[end])
+        {
+            if (order.indexOf(start) < order.indexOf(end))
+            {
+                return 1;
+            }
+            else if (start == end)
+            {
+                return 0;
+            }
+            else
+            {
+                return -1;
+            }
+        }
+        else
+        {
+            console.warn("ERROR: no tab called " + start + " or " + end);
+        }
+    }
+
     /**
      * Shows tab on DOM
      *
@@ -115,18 +144,45 @@ function Interface(parent, params)
     {
         if (DOM.tabs[name])
         {
+            let previous = current,
+                to = {x: undefined, y: undefined},
+                from = {x: undefined, y: undefined},
+                direction = getSwipeDirection(current, name);
 
-            stack.push(name);
+            console.log(direction);
+            current = name;
             DOM.tabs[name].removeCSS(CSS.hidden);
+            if (direction == 1)
+            {
+                to.x = - DOM.tabs[current].offsetLeft + "PX";
+                to.y = - DOM.tabs[current].offsetTop + "PX";
+                from.x = "0PX";
+                from.y = "0PX";
+            }
+            else if (direction == -1)
+            {
+                from.x = - DOM.tabs[previous].offsetLeft + "PX";
+                from.y = - DOM.tabs[previous].offsetTop + "PX";
+                to.x = "0PX";
+                to.y = "0PX";
+            }
+
+            DOM.container.style.left = from.x;
+            DOM.container.style.top = from.y;
+            var layoutTrigger = DOM.container.offsetHeight;
             DOM.container.removeCSS(CSS.noAnimation);
-            DOM.container.style.left = - DOM.tabs[name].offsetLeft + "PX";
-            DOM.container.style.top = - DOM.tabs[name].offsetTop + "PX";
+            DOM.container.style.left = to.x;
+            DOM.container.style.top = to.y;
 
-            if (DOM.tabs[stack[stack.length - 2]])
+            if (DOM.tabs[current])
             {
                 setTimeout((function()
                             {
-                                DOM.tabs[stack[stack.length - 2]].setCSS(CSS.hidden);
+                                if (DOM.tabs[previous])
+                                {
+                                    DOM.tabs[previous].setCSS(CSS.hidden);
+                                }
+
                                 DOM.container.setCSS(CSS.noAnimation);
                                 DOM.container.style.left = "0PX";
                                 DOM.container.style.top = "0PX";
@@ -176,14 +232,7 @@ function Interface(parent, params)
                             }).bind(this), properties.duration * 1000);*/
             }
 
-            let indexInStack = stack.indexOf(name);
-
             order.splice(order.indexOf(name), 1);
-            while (indexInStack != -1)
-            {
-                stack.splice(indexInStack, 1);
-                indexInStack = stack.indexOf(name);
-            }
 
         }
         else