2aeed10429
Create Message attached property to propagate parameters like room, timeline, index and maxContentWidth down to the message content avoiding lots of boilerplate
79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
// SPDX-FileCopyrightText: 2025 James Graham <james.h.graham@protonmail.com>
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// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
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#pragma once
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#include <QQmlEngine>
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#include <QQuickAttachedPropertyPropagator>
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#include <QQuickItem>
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#include "neochatroom.h"
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class MessageAttached : public QQuickAttachedPropertyPropagator
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{
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Q_OBJECT
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QML_NAMED_ELEMENT(Message)
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QML_ATTACHED(MessageAttached)
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QML_UNCREATABLE("")
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/**
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* @brief The room that the message comes from.
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*/
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Q_PROPERTY(NeoChatRoom *room READ room WRITE setRoom NOTIFY roomChanged FINAL)
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/**
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* @brief The timeline for the current message.
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*/
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Q_PROPERTY(QQuickItem *timeline READ timeline WRITE setTimeline NOTIFY timelineChanged FINAL)
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/**
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* @brief The index of the message in the timeline
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*/
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Q_PROPERTY(int index READ index WRITE setIndex NOTIFY indexChanged FINAL)
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/**
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* @brief The width available to the message content.
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*/
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Q_PROPERTY(qreal maxContentWidth READ maxContentWidth WRITE setMaxContentWidth NOTIFY maxContentWidthChanged FINAL)
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public:
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explicit MessageAttached(QObject *parent = nullptr);
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static MessageAttached *qmlAttachedProperties(QObject *object);
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NeoChatRoom *room() const;
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void setRoom(NeoChatRoom *room);
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QQuickItem *timeline() const;
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void setTimeline(QQuickItem *timeline);
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int index() const;
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void setIndex(int index);
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qreal maxContentWidth() const;
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void setMaxContentWidth(qreal maxContentWidth);
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Q_SIGNALS:
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void roomChanged();
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void timelineChanged();
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void indexChanged();
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void maxContentWidthChanged();
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protected:
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void propagateMessage(MessageAttached *message);
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void attachedParentChange(QQuickAttachedPropertyPropagator *newParent, QQuickAttachedPropertyPropagator *oldParent) override;
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private:
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QPointer<NeoChatRoom> m_room;
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bool m_explicitRoom = false;
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QPointer<QQuickItem> m_timeline;
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bool m_explicitTimeline = false;
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int m_index;
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bool m_explicitIndex = false;
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qreal m_maxContentWidth = -1;
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bool m_explicitMaxContentWidth = false;
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};
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