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Session: Fix issue #67 by improving error handling
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1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2019 Soeren Apel <soeren@apelpie.net>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
18  */
19
20 #ifndef PULSEVIEW_PV_VIEWS_DECODER_BINARY_VIEW_HPP
21 #define PULSEVIEW_PV_VIEWS_DECODER_BINARY_VIEW_HPP
22
23 #include <QAction>
24 #include <QComboBox>
25 #include <QStackedWidget>
26 #include <QToolButton>
27
28 #include "pv/metadata_obj.hpp"
29 #include "pv/views/viewbase.hpp"
30 #include "pv/data/decodesignal.hpp"
31
32 #include "QHexView.hpp"
33
34 namespace pv {
35
36 class Session;
37
38 namespace views {
39
40 namespace decoder_binary {
41
42 // When adding an entry here, don't forget to update SaveTypeNames as well
43 enum SaveType {
44         SaveTypeBinary,
45         SaveTypeHexDumpPlain,
46         SaveTypeHexDumpWithOffset,
47         SaveTypeHexDumpComplete,
48         SaveTypeCount  // Indicates how many save types there are, must always be last
49 };
50
51 extern const char* SaveTypeNames[SaveTypeCount];
52
53
54 class View : public ViewBase, public MetadataObjObserverInterface
55 {
56         Q_OBJECT
57
58 public:
59         explicit View(Session &session, bool is_main_view=false, QMainWindow *parent = nullptr);
60         ~View();
61
62         virtual ViewType get_type() const;
63
64         /**
65          * Resets the view to its default state after construction. It does however
66          * not reset the signal bases or any other connections with the session.
67          */
68         virtual void reset_view_state();
69
70         virtual void clear_decode_signals();
71         virtual void add_decode_signal(shared_ptr<data::DecodeSignal> signal);
72         virtual void remove_decode_signal(shared_ptr<data::DecodeSignal> signal);
73
74         virtual void save_settings(QSettings &settings) const;
75         virtual void restore_settings(QSettings &settings);
76
77 private:
78         void reset_data();
79         void update_data();
80
81         void save_data() const;
82         void save_data_as_hex_dump(bool with_offset=false, bool with_ascii=false) const;
83
84 private Q_SLOTS:
85         void on_selected_decoder_changed(int index);
86         void on_selected_class_changed(int index);
87         void on_signal_name_changed(const QString &name);
88         void on_new_binary_data(unsigned int segment_id, void* decoder, unsigned int bin_class_id);
89
90         void on_decoder_stacked(void* decoder);
91         void on_decoder_removed(void* decoder);
92
93         void on_actionSave_triggered(QAction* action = nullptr);
94
95         virtual void on_metadata_object_changed(MetadataObject* obj,
96                 MetadataValueType value_type);
97
98         virtual void perform_delayed_view_update();
99
100 private:
101         QWidget* parent_;
102
103         QComboBox *decoder_selector_, *format_selector_, *class_selector_;
104         QStackedWidget *stacked_widget_;
105         QHexView *hex_view_;
106
107         QToolButton* save_button_;
108         QAction* save_action_;
109
110         data::DecodeSignal *signal_;
111         const data::decode::Decoder *decoder_;
112         uint32_t bin_class_id_;
113         bool binary_data_exists_;
114 };
115
116 } // namespace decoder_binary
117 } // namespace views
118 } // namespace pv
119
120 #endif // PULSEVIEW_PV_VIEWS_DECODER_BINARY_VIEW_HPP