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diff --git a/ui/qt/widgets/wireless_timeline.h b/ui/qt/widgets/wireless_timeline.h
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+++ b/ui/qt/widgets/wireless_timeline.h
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+/** @file
+ *
+ * GUI to show an 802.11 wireless timeline of packets
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * Copyright 2012 Parc Inc and Samsung Electronics
+ * Copyright 2015, 2016 & 2017 Cisco Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <QScrollArea>
+
+#ifndef WIRELESSTIMELINE_H
+#define WIRELESSTIMELINE_H
+
+#include <stdio.h>
+
+#include <config.h>
+
+#include <glib.h>
+
+#include "file.h"
+
+#include "ui/ws_ui_util.h"
+
+#include <epan/prefs.h>
+#include <epan/plugin_if.h>
+#include <epan/tap.h>
+#include <epan/timestamp.h>
+
+#include <epan/dissectors/packet-ieee80211-radio.h>
+
+#include <QScrollArea>
+
+#include "cfile.h"
+
+/* pixels height for rendered timeline */
+#define TIMELINE_HEIGHT 64
+
+/* Maximum zoom levels for the timeline */
+#define TIMELINE_MAX_ZOOM 25.0
+
+class WirelessTimeline;
+class PacketList;
+
+class WirelessTimeline : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit WirelessTimeline(QWidget *parent);
+    ~WirelessTimeline();
+    void setPacketList(PacketList *packet_list);
+    void captureFileReadStarted(capture_file *cf);
+    void captureFileReadFinished();
+
+protected:
+    void resizeEvent(QResizeEvent *event);
+    void paintEvent(QPaintEvent *event);
+    void mousePressEvent (QMouseEvent *event);
+    void mouseMoveEvent (QMouseEvent *event);
+    void mouseReleaseEvent (QMouseEvent *event);
+    bool event(QEvent *event);
+    void wheelEvent(QWheelEvent *event);
+
+public slots:
+    void bgColorizationProgress(int first, int last);
+    void appInitialized();
+
+protected:
+    static void tap_timeline_reset(void* tapdata);
+    static tap_packet_status tap_timeline_packet(void *tapdata, packet_info* pinfo, epan_dissect_t* edt, const void *data, tap_flags_t flags);
+
+    struct wlan_radio* get_wlan_radio(guint32 packet_num);
+
+    void clip_tsf();
+    int position(guint64 tsf, float ratio);
+    int find_packet_tsf(guint64 tsf);
+    void doToolTip(struct wlan_radio *wr, QPoint pos, int x);
+    void zoom(double x_fraction);
+    double zoom_level;
+    qreal start_x, last_x;
+    PacketList *packet_list;
+    guint find_packet(qreal x);
+    float rgb[TIMELINE_HEIGHT][3];
+
+    guint64 start_tsf;
+    guint64 end_tsf;
+    int first_packet; /* first packet displayed */
+    struct wlan_radio *first, *last;
+    capture_file *capfile;
+
+    GHashTable* radio_packet_list;
+
+protected slots:
+    void selectedFrameChanged(QList<int>);
+};
+
+#endif // WIRELESS_TIMELINE_H