Replace QML clipboard hack by proper new Clipboard

src/qml/Chat/Composer.qml

@@ -185,9 +185,8 @@ Rectangle {
                         eventList.selectableLabelContainer.joinedSelection
                     ) {
                         ev.accepted = true
-                        Utils.copyToClipboard(
+                        Clipboard.text =
-                            eventList.selectableLabelContainer.joinedSelection,
+                            eventList.selectableLabelContainer.joinedSelection
-                        )
                         return
                     }
 

src/qml/Chat/Timeline/EventDelegate.qml

@@ -136,7 +136,7 @@ Column {
                 qsTr("Copy media address")
 
             visible: Boolean(text)
-            onTriggered: Utils.copyToClipboard(contextMenu.media[1])
+            onTriggered: Clipboard.text = contextMenu.media[1]
         }
 
         HMenuItem {
@@ -144,7 +144,7 @@ Column {
             icon.name: "copy-link"
             text: qsTr("Copy link address")
             visible: Boolean(contextMenu.link)
-            onTriggered: Utils.copyToClipboard(contextMenu.link)
+            onTriggered: Clipboard.text = contextMenu.link
         }
 
         HMenuItem {
@@ -153,7 +153,7 @@ Column {
             visible: enabled || (! copyLink.visible && ! copyMedia.visible)
             enabled: Boolean(selectableLabelContainer.joinedSelection)
             onTriggered:
-                Utils.copyToClipboard(selectableLabelContainer.joinedSelection)
+                Clipboard.text = selectableLabelContainer.joinedSelection
         }
 
         HMenuItem {

src/qml/Window.qml

@@ -35,17 +35,9 @@ ApplicationWindow {
     property var theme: null
 
     readonly property alias py: py
-    readonly property alias pseudoClipboard: pseudoClipboard
 
     Python { id: py }
 
-    TextEdit {
-        id: pseudoClipboard
-        visible: false
-        readOnly: true
-        textFormat: Text.PlainText
-    }
-
     HLoader {
         anchors.fill: parent
         source: py.ready ? "" : "LoadingScreen.qml"

src/qml/utils.js

@@ -280,14 +280,6 @@ function flickToBottom(flickable) {
 }
 
 
-function copyToClipboard(text) {
-    window.pseudoClipboard.clear()
-    window.pseudoClipboard.insert(0, text)
-    window.pseudoClipboard.selectAll()
-    window.pseudoClipboard.copy()
-}
-
-
 function urlExtension(url) {
     return url.toString().split("/").slice(-1)[0].split("?")[0].split(".")
               .slice(-1)[0].toLowerCase()