Allow copying messages via right click

fixes #291

resources/qml/MessageView.qml

@@ -117,7 +117,7 @@ ScrollView {
                     image: ":/icons/icons/ui/vertical-ellipsis.png"
                     ToolTip.visible: hovered
                     ToolTip.text: qsTr("Options")
-                    onClicked: messageContextMenu.show(row.model.id, row.model.type, row.model.isEncrypted, row.model.isEditable, "", optionsButton)
+                    onClicked: messageContextMenu.show(row.model.id, row.model.type, row.model.isEncrypted, row.model.isEditable, "", row.model.body, optionsButton)
                 }
 
             }

resources/qml/TimelineRow.qml

@@ -28,12 +28,12 @@ Item {
 
     TapHandler {
         acceptedButtons: Qt.RightButton
-        onSingleTapped: messageContextMenu.show(model.id, model.type, model.isEncrypted, model.isEditable, contentItem.child.hoveredLink)
+        onSingleTapped: messageContextMenu.show(model.id, model.type, model.isEncrypted, model.isEditable, contentItem.child.hoveredLink, contentItem.child.copyText)
         gesturePolicy: TapHandler.ReleaseWithinBounds
     }
 
     TapHandler {
-        onLongPressed: messageContextMenu.show(model.id, model.type, model.isEncrypted, model.isEditable, contentItem.child.hoveredLink)
+        onLongPressed: messageContextMenu.show(model.id, model.type, model.isEncrypted, model.isEditable, contentItem.child.hoveredLink, contentItem.child.copyText)
         onDoubleTapped: chat.model.reply = model.id
         gesturePolicy: TapHandler.ReleaseWithinBounds
     }

resources/qml/TimelineView.qml

@@ -93,15 +93,20 @@ Page {
 
         property string eventId
         property string link
+        property string text
         property int eventType
         property bool isEncrypted
         property bool isEditable
 
-        function show(eventId_, eventType_, isEncrypted_, isEditable_, link_, showAt_) {
+        function show(eventId_, eventType_, isEncrypted_, isEditable_, link_, text_, showAt_) {
             eventId = eventId_;
             eventType = eventType_;
             isEncrypted = isEncrypted_;
             isEditable = isEditable_;
+            if (text_)
+                text = text_;
+            else
+                text = "";
             if (link_)
                 link = link_;
             else
@@ -112,6 +117,13 @@ Page {
                 open();
         }
 
+        Platform.MenuItem {
+            visible: messageContextMenu.text
+            enabled: visible
+            text: qsTr("Copy")
+            onTriggered: Clipboard.text = messageContextMenu.text
+        }
+
         Platform.MenuItem {
             visible: messageContextMenu.link
             enabled: visible

resources/qml/delegates/TextMessage.qml

@@ -7,6 +7,7 @@ import im.nheko 1.0
 
 MatrixText {
     property string formatted: model.data.formattedBody
+    property string copyText: selectedText ? getText(selectionStart, selectionEnd) : model.data.body
 
     text: "<style type=\"text/css\">a { color:" + colors.link + ";}\ncode { background-color: " + colors.alternateBase + ";}</style>" + formatted.replace("<pre>", "<pre style='white-space: pre-wrap; background-color: " + colors.alternateBase + "'>")
     width: parent ? parent.width : undefined