Fix a few small completer glitches

resources/qml/Completer.qml

@@ -77,11 +77,11 @@ Control {
         }
         currentIndex = -1
     }
-    padding: 0
-    leftInset: 1
-    bottomInset: 1
-    topInset: 1
-    rightInset: 1
+
+    bottomPadding: 1
+    leftPadding: 1
+    topPadding: 1
+    rightPadding: 1
 
     contentItem: ListView {
         id: listView
@@ -107,7 +107,6 @@ Control {
         onContentYChanged: deadTimer.restart()
 
         reuseItems: true
-        //anchors.fill: parent
         implicitWidth: listView.contentItem.childrenRect.width
         model: completer
         verticalLayoutDirection: popup.bottomToTop ? ListView.BottomToTop : ListView.TopToBottom
@@ -120,7 +119,7 @@ Control {
 
             color: model.index == popup.currentIndex ? Nheko.colors.highlight : Nheko.colors.base
             height: chooser.child.implicitHeight + 2 * popup.rowMargin
-            implicitWidth: fullWidth ? popup.implicitContentWidth : chooser.child.implicitWidth + 4
+            implicitWidth: fullWidth ? ListView.view.width : chooser.child.implicitWidth + 4
 
             MouseArea {
                 id: mouseArea

resources/qml/MessageInput.qml

@@ -156,7 +156,7 @@ Rectangle {
                 onSelectionStartChanged: room.input.updateState(selectionStart, selectionEnd, cursorPosition, text)
                 onSelectionEndChanged: room.input.updateState(selectionStart, selectionEnd, cursorPosition, text)
                 // Ensure that we get escape key press events first.
-                Keys.onShortcutOverride: event.accepted = (popup.opened && (event.key === Qt.Key_Escape || event.key === Qt.Key_Tab || event.key === Qt.Key_Enter))
+                Keys.onShortcutOverride: event.accepted = (popup.opened && (event.key === Qt.Key_Escape || event.key === Qt.Key_Tab || event.key === Qt.Key_Enter || event.key === Qt.Key_Space))
                 Keys.onPressed: {
                     if (event.matches(StandardKey.Paste)) {
                         room.input.paste(false);
@@ -166,7 +166,7 @@ Rectangle {
                         if (cursorPosition == completerTriggeredAt + 1)
                             popup.close();
 
-                        if (popup.opened && popup.count <= 0)
+                        if (popup.opened && completer.count <= 0)
                             popup.close();
 
                     } else if (event.modifiers == Qt.ControlModifier && event.key == Qt.Key_U) {
@@ -190,6 +190,8 @@ Rectangle {
                     } else if (event.matches(StandardKey.SelectAll) && popup.opened) {
                         completer.completerName = "";
                         popup.close();
+                    } else if (event.matches(StandardKey.InsertLineSeparator)) {
+                        if (popup.opened) popup.close();
                     } else if (event.matches(StandardKey.InsertParagraphSeparator)) {
                         if (popup.opened) {
                             var currentCompletion = completer.currentCompletion();
@@ -198,7 +200,7 @@ Rectangle {
                             if (currentCompletion) {
                                 messageInput.insertCompletion(currentCompletion);
                                 event.accepted = true;
-                                return ;
+                                return;
                             }
                         }
                         room.input.send();
@@ -304,12 +306,15 @@ Rectangle {
 
                     x: messageInput.positionToRectangle(messageInput.completerTriggeredAt).x
                     y: messageInput.positionToRectangle(messageInput.completerTriggeredAt).y - height
-                    padding: 0
+
                     background: null
+                    padding: 0
 
                     Completer {
                         anchors.fill: parent
                         id: completer
+                        rowMargin: 2
+                        rowSpacing: 0
                     }
 
                     enter: Transition {

resources/qml/QuickSwitcher.qml

@@ -24,6 +24,7 @@ Popup {
     onOpened: {
         roomTextInput.forceActiveFocus();
     }
+    property int textMargin: Nheko.paddingSmall
 
     Column{
         anchors.fill: parent

resources/qml/Root.qml

@@ -173,7 +173,7 @@ Pane {
         onActivated: {
             var quickSwitch = quickSwitcherComponent.createObject(timelineRoot);
             quickSwitch.open();
-            destroyOnClose(quickSwitch);
+            destroyOnClosed(quickSwitch);
         }
     }
 
@@ -225,6 +225,10 @@ Pane {
         obj.closing.connect(() => obj.destroy());
     }
 
+    function destroyOnClosed(obj) {
+        obj.closed.connect(() => obj.destroy());
+    }
+
     Connections {
         function onOpenProfile(profile) {
             var userProfile = userProfileComponent.createObject(timelineRoot, {