Revert "deps: Upgrade and move `jquery-mousewheel` from `static/third` to `npm`"

Apparently, the updated version of this has a serious scrolling
performance problem in the left sidebar that basically makes scrolling
in that area unusable.

This reverts commit b683b2d3c3.

docs/THIRDPARTY

@@ -150,6 +150,10 @@ Copyright: 2011-2013 Henrique Boaventura
 License: Expat
 Comment: The software has been modified.
 
+Files: static/third/jquery-mousewheel/jquery.mousewheel.js
+Copyright: 2011 Brandon Aaron
+License: Expat
+
 Files: static/third/jquery-perfect-scrollbar/*
 Copyright: 2012 HyeonJe Jun
 License: Expat

package.json

@@ -12,7 +12,6 @@
     "i18next-browser-languagedetector": "0.3.0",
     "i18next-localstorage-cache": "0.3.0",
     "jquery": "1.12.1",
-    "jquery-mousewheel": "3.1.6",
     "jquery-validation": "1.15.1",
     "plotly.js": "1.19.2",
     "string.prototype.codepointat": "0.2.0",

static/js/ui.js

@@ -371,7 +371,7 @@ $(function () {
         viewport.last_movement_direction = delta;
     });
 
-    viewport.message_pane.mousewheel(function (e) {
+    viewport.message_pane.mousewheel(function (e, delta) {
         // Ignore mousewheel events if a modal is visible.  It's weird if the
         // user can scroll the main view by wheeling over the grayed-out area.
         // Similarly, ignore events on settings page etc.
@@ -380,7 +380,7 @@ $(function () {
         // select the compose box and then wheel over the message stream.
         var obscured = exports.home_tab_obscured();
         if (!obscured) {
-            throttled_mousewheelhandler(e, e.deltaY);
+            throttled_mousewheelhandler(e, delta);
         } else if (obscured === 'modal') {
             // The modal itself has a handler invoked before this one (see below).
             // preventDefault here so that the tab behind the modal doesn't scroll.
@@ -400,7 +400,7 @@ $(function () {
     // propagation in all cases.  Also, ignore the event if the
     // element is already at the top or bottom.  Otherwise we get a
     // new scroll event on the parent (?).
-    $('.modal-body, .scrolling_list, input, textarea').mousewheel(function (e) {
+    $('.modal-body, .scrolling_list, input, textarea').mousewheel(function (e, delta) {
         var self = $(this);
         var scroll = self.scrollTop();
 
@@ -409,8 +409,8 @@ $(function () {
         var max_scroll = this.scrollHeight - self.innerHeight() - 1;
 
         e.stopPropagation();
-        if (   ((e.deltaY > 0) && (scroll <= 0))
+        if (   ((delta > 0) && (scroll <= 0))
-            || ((e.deltaY < 0) && (scroll >= max_scroll))) {
+            || ((delta < 0) && (scroll >= max_scroll))) {
             e.preventDefault();
         }
     });

static/third/jquery-mousewheel/jquery.mousewheel.js

@@ -0,0 +1,84 @@
+/*! Copyright (c) 2011 Brandon Aaron (http://brandonaaron.net)
+ * Licensed under the MIT License (LICENSE.txt).
+ *
+ * Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
+ * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
+ * Thanks to: Seamus Leahy for adding deltaX and deltaY
+ *
+ * Version: 3.0.6
+ * 
+ * Requires: 1.2.2+
+ */
+
+(function($) {
+
+var types = ['DOMMouseScroll', 'mousewheel'];
+
+if ($.event.fixHooks) {
+    for ( var i=types.length; i; ) {
+        $.event.fixHooks[ types[--i] ] = $.event.mouseHooks;
+    }
+}
+
+$.event.special.mousewheel = {
+    setup: function() {
+        if ( this.addEventListener ) {
+            for ( var i=types.length; i; ) {
+                this.addEventListener( types[--i], handler, false );
+            }
+        } else {
+            this.onmousewheel = handler;
+        }
+    },
+    
+    teardown: function() {
+        if ( this.removeEventListener ) {
+            for ( var i=types.length; i; ) {
+                this.removeEventListener( types[--i], handler, false );
+            }
+        } else {
+            this.onmousewheel = null;
+        }
+    }
+};
+
+$.fn.extend({
+    mousewheel: function(fn) {
+        return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
+    },
+    
+    unmousewheel: function(fn) {
+        return this.unbind("mousewheel", fn);
+    }
+});
+
+
+function handler(event) {
+    var orgEvent = event || window.event, args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true, deltaX = 0, deltaY = 0;
+    event = $.event.fix(orgEvent);
+    event.type = "mousewheel";
+    
+    // Old school scrollwheel delta
+    if ( orgEvent.wheelDelta ) { delta = orgEvent.wheelDelta/120; }
+    if ( orgEvent.detail     ) { delta = -orgEvent.detail/3; }
+    
+    // New school multidimensional scroll (touchpads) deltas
+    deltaY = delta;
+    
+    // Gecko
+    if ( orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
+        deltaY = 0;
+        deltaX = -1*delta;
+    }
+    
+    // Webkit
+    if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY/120; }
+    if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = -1*orgEvent.wheelDeltaX/120; }
+    
+    // Add event and delta to the front of the arguments
+    args.unshift(event, delta, deltaX, deltaY);
+    
+    return ($.event.dispatch || $.event.handle).apply(this, args);
+}
+
+})(jQuery);

version.py

@@ -1,2 +1,2 @@
 ZULIP_VERSION = "1.4.1+git"
-PROVISION_VERSION = '4.4'
+PROVISION_VERSION = '4.3'

zproject/settings.py

@@ -760,7 +760,7 @@ JS_SPECS = {
             'third/jquery-filedrop/jquery.filedrop.js',
             'third/jquery-caret/jquery.caret.1.5.2.js',
             'node_modules/xdate/src/xdate.js',
-            'node_modules/jquery-mousewheel/jquery.mousewheel.js',
+            'third/jquery-mousewheel/jquery.mousewheel.js',
             'third/jquery-throttle-debounce/jquery.ba-throttle-debounce.js',
             'third/jquery-idle/jquery.idle.js',
             'third/jquery-autosize/jquery.autosize.js',