TimelineView: Improve UX of "jump-to" round buttons

They are not meant to be focused or interacted via keyboard. Besides,
our default qqc2-desktop-style looks too bright and flashy for no reason.

Also set text on the action itself for accessibility reasons, but force
display mode at IconOnly.

src/qml/RichLabel.qml

@@ -43,18 +43,13 @@ TextEdit {
      */
     property bool spoilerRevealed: !hasSpoiler.test(textMessage)
 
-    property bool isDelegate: false
-
     ListView.onReused: Qt.binding(() => !hasSpoiler.test(textMessage))
 
     persistentSelection: true
 
     // Work around QTBUG 93281
-    Component.onCompleted: {
-        updateSelection()
-        if (text.includes("<img")) {
-            Controller.forceRefreshTextDocument(root.textDocument, root)
-        }
+    Component.onCompleted: if (text.includes("<img")) {
+        Controller.forceRefreshTextDocument(root.textDocument, root)
     }
 
     text: "<style>
@@ -121,26 +116,4 @@ a{
         enabled: !parent.hoveredLink && !spoilerRevealed
         onTapped: spoilerRevealed = true
     }
-
-    Connections {
-        target: selectionArea
-        enabled: root.isDelegate
-        function onSelectionChanged() {
-            updateSelection();
-        }
-    }
-
-    function updateSelection() {
-        if (index < selectionArea.lowerIndex || index > selectionArea.upperIndex) {
-            root.select(0, 0);
-        } else if (index > selectionArea.lowerIndex && index < selectionArea.upperIndex) {
-            root.selectAll();
-        } else if (index === selectionArea.selectionStartIndex && index === selectionArea.selectionEndIndex) {
-            root.select(selectionArea.upperPos, selectionArea.lowerPos);
-        } else if (index === selectionArea.upperIndex) {
-            root.select(selectionArea.upperPos, root.length);
-        } else if (index === selectionArea.lowerIndex) {
-            root.select(0, selectionArea.lowerPos);
-        }
-    }
 }

src/qml/TextDelegate.qml

@@ -17,14 +17,6 @@ import org.kde.neochat.config
 MessageDelegate {
     id: root
 
-    function positionAt(x, y) {
-        let point = label.mapFromItem(root, x, y)
-        return label.positionAt(point.x, point.y)
-    }
-
-    property alias selectedText: label.selectedText
-
-
     /**
      * @brief The link preview properties.
      *
@@ -62,7 +54,6 @@ MessageDelegate {
                 acceptedButtons: Qt.LeftButton
                 onLongPressed: root.openContextMenu()
             }
-            isDelegate: true
         }
         Loader {
             Layout.fillWidth: true

src/qml/TimelineView.qml

@@ -134,23 +134,25 @@ QQC2.ScrollView {
             implicitWidth: Kirigami.Units.gridUnit * 2
             implicitHeight: Kirigami.Units.gridUnit * 2
 
+            display: QQC2.AbstractButton.IconOnly
+            focusPolicy: Qt.NoFocus
+
             z: 2
             visible: root.currentRoom && root.currentRoom.hasUnreadMessages && root.currentRoom.readMarkerLoaded
             action: Kirigami.Action {
+                icon.name: "go-up"
+                shortcut: "Shift+PgUp"
+                text: i18n("Jump to first unread message")
+
                 onTriggered: {
                     if (!Kirigami.Settings.isMobile) {
                         root.focusChatBox();
                     }
                     messageListView.goToEvent(root.currentRoom.readMarkerEventId)
                 }
-                icon.name: "go-up"
-                shortcut: "Shift+PgUp"
-            }
-
-            QQC2.ToolTip {
-                text: i18n("Jump to first unread message")
             }
         }
+
         QQC2.RoundButton {
             id: goMarkAsReadFab
             anchors.right: parent.right
@@ -160,18 +162,19 @@ QQC2.ScrollView {
             implicitWidth: Kirigami.Units.gridUnit * 2
             implicitHeight: Kirigami.Units.gridUnit * 2
 
+            display: QQC2.AbstractButton.IconOnly
+            focusPolicy: Qt.NoFocus
+
             z: 2
             visible: !messageListView.atYEnd
             action: Kirigami.Action {
+                icon.name: "go-down"
+                text: i18n("Jump to latest message")
+
                 onTriggered: {
                     messageListView.goToLastMessage();
                     root.currentRoom.markAllMessagesAsRead();
                 }
-                icon.name: "go-down"
-            }
-
-            QQC2.ToolTip {
-                text: i18n("Jump to latest message")
             }
         }
 
@@ -341,66 +344,6 @@ QQC2.ScrollView {
             }
         }
 
-        function indexAtRelative(x, y) {
-            return indexAt(x + contentX, y + contentY)
-        }
-
-        MouseArea {
-            id: selectionArea
-
-            anchors.fill: parent
-
-            property int selectionStartIndex
-            property int selectionEndIndex
-            property int selectionStartPos
-            property int selectionEndPos
-
-            property int upperIndex: selectionStartIndex > selectionEndIndex ? selectionStartIndex : selectionEndIndex
-            property int upperPos: selectionStartIndex > selectionEndIndex ? selectionStartPos : (selectionStartIndex == selectionEndIndex ? (selectionStartPos > selectionEndPos ? selectionEndPos : selectionStartPos) : selectionEndPos)
-            property int lowerIndex: selectionStartIndex > selectionEndIndex ? selectionEndIndex : selectionStartIndex
-            property int lowerPos: selectionStartIndex > selectionEndIndex ? selectionEndPos : (selectionStartIndex == selectionEndIndex ? (selectionStartPos > selectionEndPos ? selectionStartPos : selectionEndPos) : selectionStartPos)
-
-            signal selectionChanged
-
-            function indexAndPos(x, y) {
-                const index = messageListView.indexAtRelative(x, y);
-                if (index == -1) {
-                    return;
-                }
-                const item = messageListView.itemAtIndex(index);
-                const relItemY = item.y - messageListView.contentY;
-                const pos = item.positionAt(x, y - relItemY);
-                return [index, pos]
-            }
-
-            onPressed: {
-                [selectionArea.selectionEndIndex, selectionArea.selectionEndPos] = selectionArea.indexAndPos(mouse.x, mouse.y);
-                [selectionArea.selectionStartIndex, selectionArea.selectionStartPos] = selectionArea.indexAndPos(mouse.x, mouse.y);
-                selectionChanged();
-            }
-            onPositionChanged: {
-                if (!pressed) {
-                    return
-                }
-                [selectionEndIndex, selectionEndPos] = selectionArea.indexAndPos(mouse.x, mouse.y);
-                selectionChanged();
-            }
-        }
-
-        Kirigami.Action {
-            onTriggered: {
-                var text = ""
-                for (let i = selectionArea.upperIndex; i >= selectionArea.lowerIndex; i--) {
-                    text += messageListView.itemAtIndex(i).selectedText
-                    if (i > selectionArea.lowerIndex) {
-                        text += " "
-                    }
-                }
-                Clipboard.saveText(text)
-            }
-            shortcut: "Ctrl+C"
-        }
-
         function showMaximizedMedia(index) {
             var popup = maximizeComponent.createObject(QQC2.ApplicationWindow.overlay, {
                     initialIndex: index