Click on blank part of dialog to deselect item

interface/resources/qml/dialogs/FileDialog.qml

@@ -79,6 +79,9 @@ ModalWindow {
         fileTableModel.folder = initialFolder;
 
         iconText = root.title !== "" ? hifi.glyphs.scriptUpload : "";
+
+        // Clear selection when click on external frame.
+        frameClicked.connect(function() { d.clearSelection(); });
     }
 
     Item {
@@ -87,6 +90,13 @@ ModalWindow {
         height: pane.height
         anchors.margins: 0
 
+        MouseArea {
+            // Clear selection when click on internal unused area.
+            anchors.fill: parent
+            drag.target: root
+            onClicked: d.clearSelection()
+        }
+
         Row {
             id: navControls
             anchors {
@@ -228,6 +238,12 @@ ModalWindow {
                 fileTableModel.folder = homeDestination;
                 return true;
             }
+
+            function clearSelection() {
+                fileTableView.selection.clear();
+                fileTableView.currentRow = -1;
+                update();
+            }
         }
 
         FolderListModel {
@@ -392,9 +408,7 @@ ModalWindow {
                     rows++;
                 }
 
-                fileTableView.selection.clear();
-                fileTableView.currentRow = -1;
-                d.update();
+                d.clearSelection();
             }
         }
 

interface/resources/qml/windows-uit/ModalFrame.qml

@@ -27,6 +27,8 @@ Frame {
         readonly property int frameMarginTop: hifi.dimensions.modalDialogMargin.y + (frameContent.hasTitle ? hifi.dimensions.modalDialogTitleHeight + 10 : 0)
         readonly property int frameMarginBottom: hifi.dimensions.modalDialogMargin.y
 
+        signal frameClicked();
+
         anchors {
             fill: parent
             topMargin: -frameMarginTop
@@ -47,6 +49,7 @@ Frame {
             anchors.fill: parent
             drag.target: window
             enabled: window.draggable
+            onClicked: window.frameClicked();
         }
 
         Item {

interface/resources/qml/windows-uit/ModalWindow.qml

@@ -22,5 +22,7 @@ Window {
     property int colorScheme: hifi.colorSchemes.light
     property bool draggable: false
 
+    signal frameClicked();
+
     anchors.centerIn: draggable ? undefined : parent
 }