Advanced channel filters (#1748)

Adds custom channel filters complete with their own mini-language. Filters can be created in settings, and applied by clicking the three dots to open the Split menu and selecting "Set filters".

src/common/Channel.cpp

@@ -224,6 +224,14 @@ void Channel::replaceMessage(MessagePtr message, MessagePtr replacement)
     }
 }
 
+void Channel::replaceMessage(size_t index, MessagePtr replacement)
+{
+    if (this->messages_.replaceItem(index, replacement))
+    {
+        this->messageReplaced.invoke(index, replacement);
+    }
+}
+
 void Channel::deleteMessage(QString messageID)
 {
     LimitedQueueSnapshot<MessagePtr> snapshot = this->getMessageSnapshot();

src/common/Channel.hpp

@@ -72,6 +72,7 @@ public:
     void addOrReplaceTimeout(MessagePtr message);
     void disableAllMessages();
     void replaceMessage(MessagePtr message, MessagePtr replacement);
+    void replaceMessage(size_t index, MessagePtr replacement);
     void deleteMessage(QString messageID);
     void clearMessages();
 

src/common/WindowDescriptors.cpp

@@ -68,6 +68,23 @@ namespace {
         return descriptor;
     }
 
+    const QList<QUuid> loadFilters(QJsonValue val)
+    {
+        QList<QUuid> filterIds;
+
+        if (!val.isUndefined())
+        {
+            const auto array = val.toArray();
+            filterIds.reserve(array.size());
+            for (const auto &id : array)
+            {
+                filterIds.append(QUuid::fromString(id.toString()));
+            }
+        }
+
+        return filterIds;
+    }
+
 }  // namespace
 
 void SplitDescriptor::loadFromJSON(SplitDescriptor &descriptor,
@@ -85,6 +102,7 @@ void SplitDescriptor::loadFromJSON(SplitDescriptor &descriptor,
     {
         descriptor.channelName_ = data.value("name").toString();
     }
+    descriptor.filters_ = loadFilters(root.value("filters"));
 }
 
 WindowLayout WindowLayout::loadFromFile(const QString &path)

src/common/WindowDescriptors.hpp

@@ -37,6 +37,8 @@ struct SplitDescriptor {
     // Whether "Moderation Mode" (the sword icon) is enabled in this split or not
     bool moderationMode_{false};
 
+    QList<QUuid> filters_;
+
     static void loadFromJSON(SplitDescriptor &descriptor,
                              const QJsonObject &root, const QJsonObject &data);
 };