Implement devtoool to show hidden timeline messages

src/devtools/DebugOptions.qml

@@ -15,6 +15,12 @@ FormCard.FormCardPage {
     FormCard.FormCard {
         Layout.topMargin: Kirigami.Units.largeSpacing
 
+        FormCard.FormCheckDelegate {
+            text: i18nc("@option:check", "Show hidden events in the timeline")
+            checked: Config.showAllEvents
+
+            onToggled: Config.showAllEvents = checked
+        }
         FormCard.FormCheckDelegate {
             id: roomAccountDataVisibleCheck
             text: i18nc("@option:check Enable the matrix 'threads' feature", "Always allow device verification")

src/models/messagefiltermodel.cpp

@@ -36,6 +36,14 @@ MessageFilterModel::MessageFilterModel(QObject *parent, TimelineModel *sourceMod
 }
 
 bool MessageFilterModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
+{
+    if (NeoChatConfig::self()->showAllEvents()) {
+        return true;
+    }
+    return eventIsVisible(sourceRow, sourceParent);
+}
+
+bool MessageFilterModel::eventIsVisible(int sourceRow, const QModelIndex &sourceParent) const
 {
     const QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
 
@@ -59,9 +67,8 @@ bool MessageFilterModel::filterAcceptsRow(int sourceRow, const QModelIndex &sour
     // Don't show state events that are not the first in a consecutive group on the
     // same day as they will be grouped as a single delegate.
     const bool notLastRow = sourceRow < sourceModel()->rowCount() - 1;
-    const bool previousEventIsState = notLastRow
-        ? sourceModel()->data(sourceModel()->index(sourceRow + 1, 0), MessageEventModel::DelegateTypeRole) == DelegateType::State
-        : false;
+    const bool previousEventIsState =
+        notLastRow ? sourceModel()->data(sourceModel()->index(sourceRow + 1, 0), MessageEventModel::DelegateTypeRole) == DelegateType::State : false;
     const bool newDay = sourceModel()->data(sourceModel()->index(sourceRow, 0), MessageEventModel::ShowSectionRole).toBool();
     if (eventType == DelegateType::State && notLastRow && previousEventIsState && !newDay) {
         return false;
@@ -72,7 +79,11 @@ bool MessageFilterModel::filterAcceptsRow(int sourceRow, const QModelIndex &sour
 
 QVariant MessageFilterModel::data(const QModelIndex &index, int role) const
 {
-    if (role == AggregateDisplayRole) {
+    if (role == MessageEventModel::DelegateTypeRole) {
+        if (!eventIsVisible(index.row(), index.parent())) {
+            return DelegateType::Other;
+        }
+    } else if (role == AggregateDisplayRole) {
         return aggregateEventToString(mapToSource(index).row());
     } else if (role == StateEventsRole) {
         return stateEventsList(mapToSource(index).row());

src/models/messagefiltermodel.h

@@ -60,6 +60,8 @@ public:
     [[nodiscard]] QHash<int, QByteArray> roleNames() const override;
 
 private:
+    bool eventIsVisible(int sourceRow, const QModelIndex &sourceParent) const;
+
     /**
      * @brief Aggregation of the text of consecutive state events starting at row.
      *

src/neochatconfig.kcfg

@@ -157,6 +157,10 @@
     </entry>
   </group>
   <group name="Debug">
+    <entry name="ShowAllEvents" type="bool">
+      <label>Don't hide any events in the timeline</label>
+      <default>false</default>
+    </entry>
     <entry name="AlwaysVerifyDevice" type="bool">
       <label>Always allow device verification</label>
       <default>false</default>

src/timeline/CMakeLists.txt

@@ -8,6 +8,7 @@ qt_add_qml_module(timeline
     QML_FILES
         EventDelegate.qml
         TimelineDelegate.qml
+        HiddenDelegate.qml
         MessageDelegate.qml
         LoadingDelegate.qml
         ReadMarkerDelegate.qml

src/timeline/EventDelegate.qml

@@ -50,6 +50,17 @@ DelegateChooser {
 
     DelegateChoice {
         roleValue: DelegateType.Other
-        delegate: Item {}
+        delegate: Config.showAllEvents ? hiddenDelegate : emptyDelegate
+
+        Component {
+            id: hiddenDelegate
+            HiddenDelegate {
+                room: root.room
+            }
+        }
+        Component {
+            id: emptyDelegate
+            Item {}
+        }
     }
 }

src/timeline/HiddenDelegate.qml

@@ -0,0 +1,94 @@
+// SPDX-FileCopyrightText: 2024 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+import QtQuick
+import QtQuick.Controls as QQC2
+import QtQuick.Layouts
+
+import org.kde.kirigami as Kirigami
+import org.kde.kirigamiaddons.components as KirigamiComponents
+
+import org.kde.neochat
+
+TimelineDelegate {
+    id: root
+
+    /**
+     * @brief The NeoChatRoom the delegate is being displayed in.
+     */
+    required property NeoChatRoom room
+
+    /**
+     * @brief The matrix ID of the message event.
+     */
+    required property string eventId
+
+    /**
+     * @brief The message author.
+     *
+     * This should consist of the following:
+     *  - id - The matrix ID of the author.
+     *  - isLocalUser - Whether the author is the local user.
+     *  - avatarSource - The mxc URL for the author's avatar in the current room.
+     *  - avatarMediaId - The media ID of the author's avatar.
+     *  - avatarUrl - The mxc URL for the author's avatar.
+     *  - displayName - The display name of the author.
+     *  - display - The name of the author.
+     *  - color - The color for the author.
+     *  - object - The Quotient::User object for the author.
+     *
+     * @sa Quotient::User
+     */
+    required property var author
+
+    contentItem: QQC2.Control {
+        id: contentControl
+        contentItem: RowLayout {
+            KirigamiComponents.Avatar {
+                Layout.leftMargin: Kirigami.Units.largeSpacing * 1.5
+                implicitWidth: Kirigami.Units.iconSizes.small
+                implicitHeight: Kirigami.Units.iconSizes.small
+
+                name: root.author.displayName
+                source: root.author.avatarSource
+                color: root.author.color
+            }
+            QQC2.Label {
+                text: root.author.displayName + " : " + root.eventId
+                color: Kirigami.Theme.disabledTextColor
+                verticalAlignment: Text.AlignVCenter
+            }
+            Kirigami.Icon {
+                implicitWidth: Kirigami.Units.iconSizes.small
+                implicitHeight: Kirigami.Units.iconSizes.small
+                source: "view-hidden"
+            }
+        }
+
+        TapHandler {
+            acceptedButtons: Qt.RightButton
+            onTapped: _private.showMessageMenu()
+        }
+
+        TapHandler {
+            acceptedButtons: Qt.LeftButton
+            onLongPressed: _private.showMessageMenu()
+        }
+
+        background: Rectangle {
+            color: Kirigami.Theme.backgroundColor
+            radius: Kirigami.Units.smallSpacing
+            border {
+                width: contentControl.hovered ? 1 : 0
+                color: Kirigami.Theme.highlightColor
+            }
+        }
+    }
+
+    QtObject {
+        id: _private
+        function showMessageMenu() {
+            RoomManager.viewEventMenu(root.eventId, root.room, "");
+        }
+    }
+}