put all split widgets inside the same directory

src/widgets/splits/SplitInput.hpp

@@ -0,0 +1,72 @@
+#pragma once
+
+#include "widgets/helper/ResizingTextEdit.hpp"
+#include "widgets/BaseWidget.hpp"
+#include "widgets/EmotePopup.hpp"
+#include "widgets/helper/RippleEffectLabel.hpp"
+
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QLineEdit>
+#include <QPaintEvent>
+#include <QTextEdit>
+#include <QVBoxLayout>
+#include <QWidget>
+
+namespace chatterino {
+namespace widgets {
+
+class Split;
+
+class SplitInput : public BaseWidget
+{
+    Q_OBJECT
+
+public:
+    SplitInput(Split *_chatWidget);
+
+    void clearSelection();
+    QString getInputText() const;
+    void insertText(const QString &text);
+
+    pajlada::Signals::Signal<const QString &> textChanged;
+
+protected:
+    virtual void scaleChangedEvent(float scale) override;
+    virtual void themeRefreshEvent() override;
+
+    virtual void paintEvent(QPaintEvent *) override;
+    virtual void resizeEvent(QResizeEvent *) override;
+
+    virtual void mousePressEvent(QMouseEvent *event) override;
+
+private:
+    Split *const split_;
+    std::unique_ptr<EmotePopup> emotePopup_;
+
+    struct {
+        ResizingTextEdit *textEdit;
+        QLabel *textEditLength;
+        RippleEffectLabel *emoteButton;
+
+        QHBoxLayout *hbox;
+    } ui_;
+
+    std::vector<pajlada::Signals::ScopedConnection> managedConnections_;
+    QStringList prevMsg_;
+    QString currMsg_;
+    int prevIndex_ = 0;
+
+    void initLayout();
+    void installKeyPressedEvent();
+
+    void updateEmoteButton();
+
+private slots:
+    void editTextChanged();
+
+    friend class Split;
+};
+
+}  // namespace widgets
+}  // namespace chatterino