Move the remaining functionality of ChatDocumentHandler to ChatTextItemHelper or split into own objects

autotests/chattextitemhelpertestwrapper.h

@@ -0,0 +1,89 @@
+// SPDX-FileCopyrightText: 2025 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+#pragma once
+
+#include <QObject>
+#include <QQuickItem>
+#include <QQuickTextDocument>
+#include <QTextCursor>
+
+#include "chattextitemhelper.h"
+
+class ChatTextItemHelperTestWrapper : public QObject
+{
+    Q_OBJECT
+    QML_ELEMENT
+
+    /**
+     * @brief The QML text Item the TextItemHelper is handling.
+     */
+    Q_PROPERTY(QQuickItem *textItem READ textItem WRITE setTextItem NOTIFY textItemChanged)
+
+public:
+    explicit ChatTextItemHelperTestWrapper(QObject *parent = nullptr)
+        : QObject(parent)
+        , m_textItemWrapper(new ChatTextItemHelper(this))
+    {
+        Q_ASSERT(m_textItemWrapper);
+        connect(m_textItemWrapper, &ChatTextItemHelper::textItemChanged, this, &ChatTextItemHelperTestWrapper::textItemChanged);
+        connect(m_textItemWrapper, &ChatTextItemHelper::contentsChange, this, &ChatTextItemHelperTestWrapper::contentsChange);
+        connect(m_textItemWrapper, &ChatTextItemHelper::contentsChanged, this, &ChatTextItemHelperTestWrapper::contentsChanged);
+        connect(m_textItemWrapper, &ChatTextItemHelper::cursorPositionChanged, this, &ChatTextItemHelperTestWrapper::cursorPositionChanged);
+    }
+
+    QQuickItem *textItem() const
+    {
+        return m_textItemWrapper->textItem();
+    }
+    void setTextItem(QQuickItem *textItem)
+    {
+        m_textItemWrapper->setTextItem(textItem);
+    }
+
+    Q_INVOKABLE bool compareDocuments(QQuickTextDocument *document)
+    {
+        return document->textDocument() == m_textItemWrapper->document();
+    }
+
+    Q_INVOKABLE bool compareCursor(int cursorPosition, int selectionStart, int selectionEnd)
+    {
+        const auto cursor = m_textItemWrapper->textCursor();
+        if (cursor.isNull()) {
+            return false;
+        }
+        const auto posSame = cursor.position() == cursorPosition;
+        const auto startSame = cursor.selectionStart() == selectionStart;
+        const auto endSame = cursor.selectionEnd() == selectionEnd;
+        return posSame && startSame && endSame;
+    }
+
+    Q_INVOKABLE int cursorPosition() const
+    {
+        return m_textItemWrapper->cursorPosition();
+    }
+
+    Q_INVOKABLE void setCursorPosition(int pos)
+    {
+        m_textItemWrapper->setCursorPosition(pos);
+    }
+
+    Q_INVOKABLE void setCursorVisible(bool visible)
+    {
+        m_textItemWrapper->setCursorVisible(visible);
+    }
+
+    Q_INVOKABLE void forceActiveFocus() const
+    {
+        m_textItemWrapper->forceActiveFocus();
+    }
+
+Q_SIGNALS:
+    void textItemChanged();
+    void contentsChange(int position, int charsRemoved, int charsAdded);
+    void contentsChanged();
+    void cursorPositionChanged();
+
+private:
+    QPointer<ChatTextItemHelper> m_textItemWrapper;
+};