qwasmclipboard.h

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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#ifndef QWasmClipboard_H
#define QWasmClipboard_H
 
#include <QObject>
 
#include <qpa/qplatformclipboard.h>
#include <private/qstdweb_p.h>
#include <QMimeData>
 
#include <emscripten/bind.h>
#include <emscripten/val.h>
 
QT_BEGIN_NAMESPACE
 
struct KeyEvent;
 
class QWasmClipboard : public QObject, public QPlatformClipboard
{
public:
    enum class ProcessKeyboardResult {
        Ignored,
        NativeClipboardEventNeeded,
        NativeClipboardEventAndCopiedDataNeeded,
    };
 
    QWasmClipboard();
    virtual ~QWasmClipboard();
 
    // QPlatformClipboard methods.
    QMimeData* mimeData(QClipboard::Mode mode = QClipboard::Clipboard) override;
    void setMimeData(QMimeData* data, QClipboard::Mode mode = QClipboard::Clipboard) override;
    bool supportsMode(QClipboard::Mode mode) const override;
    bool ownsMode(QClipboard::Mode mode) const override;
 
    ProcessKeyboardResult processKeyboard(const KeyEvent &event);
    bool hasClipboardApi();
    static bool shouldInstallWindowEventHandlers();
    void sendClipboardData(emscripten::val event);
 
    static void cut(emscripten::val event);
    static void copy(emscripten::val event);
    static void paste(emscripten::val event);
 
private:
    void initClipboardPermissions();
    void writeToClipboardApi();
    void writeToClipboard();
 
    bool m_hasClipboardApi = false;
    QWasmEventHandler m_documentCut;
    QWasmEventHandler m_documentCopy;
    QWasmEventHandler m_documentPaste;
};
 
QT_END_NAMESPACE
 
#endif // QWASMCLIPBOARD_H