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-rw-r--r--app/assets/javascripts/components/features/ui/index.jsx51
1 files changed, 42 insertions, 9 deletions
diff --git a/app/assets/javascripts/components/features/ui/index.jsx b/app/assets/javascripts/components/features/ui/index.jsx
index b7e8f32a4..4b7e4bb46 100644
--- a/app/assets/javascripts/components/features/ui/index.jsx
+++ b/app/assets/javascripts/components/features/ui/index.jsx
@@ -36,15 +36,31 @@ const UI = React.createClass({
     this.setState({ width: window.innerWidth });
   },
 
+  handleDragEnter (e) {
+    e.preventDefault();
+
+    if (!this.dragTargets) {
+      this.dragTargets = [];
+    }
+
+    if (this.dragTargets.indexOf(e.target) === -1) {
+      this.dragTargets.push(e.target);
+    }
+
+    this.setState({ draggingOver: true });
+  },
+
   handleDragOver (e) {
     e.preventDefault();
     e.stopPropagation();
 
-    e.dataTransfer.dropEffect = 'copy';
+    try {
+      e.dataTransfer.dropEffect = 'copy';
+    } catch (err) {
 
-    if (e.dataTransfer.effectAllowed === 'all' || e.dataTransfer.effectAllowed === 'uninitialized') {
-      this.setState({ draggingOver: true });
     }
+
+    return false;
   },
 
   handleDrop (e) {
@@ -57,14 +73,25 @@ const UI = React.createClass({
     }
   },
 
-  handleDragLeave () {
+  handleDragLeave (e) {
+    e.preventDefault();
+    e.stopPropagation();
+
+    this.dragTargets = this.dragTargets.filter(el => el !== e.target && this.node.contains(el));
+
+    if (this.dragTargets.length > 0) {
+      return;
+    }
+
     this.setState({ draggingOver: false });
   },
 
   componentWillMount () {
     window.addEventListener('resize', this.handleResize, { passive: true });
-    window.addEventListener('dragover', this.handleDragOver);
-    window.addEventListener('drop', this.handleDrop);
+    document.addEventListener('dragenter', this.handleDragEnter, false);
+    document.addEventListener('dragover', this.handleDragOver, false);
+    document.addEventListener('drop', this.handleDrop, false);
+    document.addEventListener('dragleave', this.handleDragLeave, false);
 
     this.props.dispatch(refreshTimeline('home'));
     this.props.dispatch(refreshNotifications());
@@ -72,8 +99,14 @@ const UI = React.createClass({
 
   componentWillUnmount () {
     window.removeEventListener('resize', this.handleResize);
-    window.removeEventListener('dragover', this.handleDragOver);
-    window.removeEventListener('drop', this.handleDrop);
+    document.removeEventListener('dragenter', this.handleDragEnter);
+    document.removeEventListener('dragover', this.handleDragOver);
+    document.removeEventListener('drop', this.handleDrop);
+    document.removeEventListener('dragleave', this.handleDragLeave);
+  },
+
+  setRef (c) {
+    this.node = c;
   },
 
   render () {
@@ -100,7 +133,7 @@ const UI = React.createClass({
     }
 
     return (
-      <div className='ui' onDragLeave={this.handleDragLeave}>
+      <div className='ui' ref={this.setRef}>
         <TabsBar />
 
         {mountedColumns}