Some memory leaks have been fixed (#61)

* svg.selectize.js memory leaks have been fixed

cvat/apps/engine/static/engine/js/3rdparty.patch

@@ -1,17 +1,17 @@
-From b89380c65ea8bc9231cc98a6ae0e812227c85b3d Mon Sep 17 00:00:00 2001
+From 5eeb1092c64865c555671ed585da18f974c9c10c Mon Sep 17 00:00:00 2001
 From: Boris Sekachev <boris.sekachev@intel.com>
-Date: Tue, 10 Jul 2018 14:31:13 +0300
+Date: Tue, 18 Sep 2018 15:58:20 +0300
 Subject: [PATCH] tmp
 
 ---
  .../engine/static/engine/js/3rdparty/svg.draggable.js   |  1 +
  cvat/apps/engine/static/engine/js/3rdparty/svg.draw.js  | 17 +++++++++++++++--
  .../apps/engine/static/engine/js/3rdparty/svg.resize.js |  5 +++--
- .../apps/engine/static/engine/js/3rdparty/svg.select.js |  1 +
+ .../apps/engine/static/engine/js/3rdparty/svg.select.js |  5 ++++-
- 4 files changed, 20 insertions(+), 4 deletions(-)
+ 4 files changed, 23 insertions(+), 5 deletions(-)
 
 diff --git a/cvat/apps/engine/static/engine/js/3rdparty/svg.draggable.js b/cvat/apps/engine/static/engine/js/3rdparty/svg.draggable.js
-index d88abf5..06158f1 100644
+index d88abf5..aba474c 100644
 --- a/cvat/apps/engine/static/engine/js/3rdparty/svg.draggable.js
 +++ b/cvat/apps/engine/static/engine/js/3rdparty/svg.draggable.js
 @@ -109,6 +109,7 @@
@@ -23,7 +23,7 @@ index d88abf5..06158f1 100644
      var box = this.getBBox()
        , p   = this.transformPoint(e)
 diff --git a/cvat/apps/engine/static/engine/js/3rdparty/svg.draw.js b/cvat/apps/engine/static/engine/js/3rdparty/svg.draw.js
-index 68dbf2a..9884b75 100644
+index 68dbf2a..20a6917 100644
 --- a/cvat/apps/engine/static/engine/js/3rdparty/svg.draw.js
 +++ b/cvat/apps/engine/static/engine/js/3rdparty/svg.draw.js
 @@ -18,6 +18,7 @@
@@ -101,7 +101,7 @@ index 0c3b63d..fb5dc26 100644
          // Calculate the difference between the mouseposition at start and now
          var txPt = this._extractPosition(event);
 diff --git a/cvat/apps/engine/static/engine/js/3rdparty/svg.select.js b/cvat/apps/engine/static/engine/js/3rdparty/svg.select.js
-index 47e07bd..f1d0c02 100644
+index 47e07bd..cee6d34 100644
 --- a/cvat/apps/engine/static/engine/js/3rdparty/svg.select.js
 +++ b/cvat/apps/engine/static/engine/js/3rdparty/svg.select.js
 @@ -160,6 +160,7 @@ SelectHandler.prototype.drawPoints = function () {
@@ -112,6 +112,32 @@ index 47e07bd..f1d0c02 100644
                  var x = ev.pageX || ev.touches[0].pageX;
                  var y = ev.pageY || ev.touches[0].pageY;
                  _this.el.fire('point', {x: x, y: y, i: k, event: ev});
+@@ -361,6 +362,7 @@ SelectHandler.prototype.cleanup = function () {
+         // stop watching the element, remove the selection
+         this.rectSelection.set.each(function () {
+             this.remove();
++            SVG.off(this.node);
+         });
+ 
+         this.rectSelection.set.clear();
+@@ -371,6 +373,7 @@ SelectHandler.prototype.cleanup = function () {
+         // Remove all points, clear the set, stop watching the element
+         this.pointSelection.set.each(function () {
+             this.remove();
++            SVG.off(this.node);
+         });
+ 
+         this.pointSelection.set.clear();
+@@ -379,8 +382,8 @@ SelectHandler.prototype.cleanup = function () {
+ 
+     if (!this.pointSelection.isSelected && !this.rectSelection.isSelected) {
+         this.nested.remove();
++        SVG.off(this.node);
+         delete this.nested;
+-
+     }
+ };
+ 
 -- 
 2.7.4
 

cvat/apps/engine/static/engine/js/player.js

@@ -44,6 +44,8 @@ class FrameProvider extends Listener {
         this._loaded = frame;
         this._frameCollection[frame] = image;
         this._loadAllowed = true;
+        image.onload = null;
+        image.onerror = null;
         this.notify();
     }
 
@@ -109,6 +111,8 @@ class FrameProvider extends Listener {
                 image.onload = this._onImageLoad.bind(this, image, frame);
                 image.onerror = () => {
                     this._loadAllowed = true;
+                    image.onload = null;
+                    image.onerror = null;
                 };
                 image.src = `get/task/${this._tid}/frame/${frame}`;
             }.bind(this), 25);

cvat/apps/engine/static/engine/js/shapes.js

@@ -1608,8 +1608,8 @@ class ShapeView extends Listener {
 
     _removeShapeUI() {
         if (this._uis.shape) {
-            this._uis.shape.off('click');
             this._uis.shape.remove();
+            SVG.off(this._uis.shape.node);
             this._uis.shape = null;
         }
     }
@@ -1618,6 +1618,7 @@ class ShapeView extends Listener {
     _removeShapeText() {
         if (this._uis.text) {
             this._uis.text.remove();
+            SVG.off(this._uis.text.node);
             this._uis.text = null;
         }
     }