MCSM:Webconsole: умный скроллинг

Если бегунок находится в самом низу консоли, то включается автоскроллинг

mcserver-manager/src/main/resources/components.js

@@ -76,6 +76,7 @@ var ScrollingContent = React.createClass({
     ownHeight: 0,
     scrollRatio: 0,
     lastPageY: 0,
+    autoScroll: true,
     updateScrollParams: function () {
         this.totalHeight = this.refs.content.scrollHeight;
         this.ownHeight   = this.refs.content.clientHeight;
@@ -84,6 +85,10 @@ var ScrollingContent = React.createClass({
 
         var h = this.scrollRatio * 100;
         if (h < 100) {
+            if (this.autoScroll) {
+                this.refs.content.scrollTop = this.totalHeight;
+            }
+
             this.refs.scroll.style.height = h + "%";
             this.refs.scroll.style.top = (this.refs.content.scrollTop / this.totalHeight) * 100 + "%";
         }
@@ -116,10 +121,17 @@ var ScrollingContent = React.createClass({
         document.removeEventListener('mousemove', this.handleMouseMove);
         document.removeEventListener('mouseup', this.handleMouseUp);
     },
+    handleScroll: function (event) {
+        var zH = this.refs.gencon.offsetHeight;
+        var bottomPoint = ((this.refs.content.scrollTop / this.totalHeight) * zH) +
+            (this.scrollRatio * zH);
+
+        this.autoScroll = (bottomPoint === zH);
+    },
     /*--------------------*/
     render: function () {
         return (
-            ce('div', {className: this.props.className},
+            ce('div', {className: this.props.className, ref: 'gencon'},
                 ce('div', {className: 'wrapper'},
                     ce('div', {className: 'content', ref: 'content'}, this.props.children)
                 ),
@@ -130,6 +142,7 @@ var ScrollingContent = React.createClass({
     componentDidMount: function () {
         this.updateScrollParams();
         this.refs.scroll.addEventListener('mousedown', this.handleMouseDown);
+        this.refs.content.addEventListener('scroll', this.handleScroll);
 
         var _this = this;
         this.refs.content.addEventListener('scroll', function(){