1 /* tabnav_tree_view.cpp
2  * Tree view with saner tab navigation functionality.
3  *
4  * Copyright 2016 Peter Wu <peter@lekensteyn.nl>
5  *
6  * Wireshark - Network traffic analyzer
7  * By Gerald Combs <gerald@wireshark.org>
8  * Copyright 1998 Gerald Combs
9  *
10  * SPDX-License-Identifier: GPL-2.0-or-later
11  */
12 
13 #include "tabnav_tree_view.h"
14 
TabnavTreeView(QWidget * parent)15 TabnavTreeView::TabnavTreeView(QWidget *parent) : QTreeView(parent)
16 {
17 }
18 
19 // Note: if a QTableView is used, then this is not needed anymore since Tab
20 // works as "expected" (move to next cell instead of row).
21 // Note 2: this does not help with fields with no widget (like filename).
moveCursor(CursorAction cursorAction,Qt::KeyboardModifiers modifiers)22 QModelIndex TabnavTreeView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers)
23 {
24     QModelIndex current = currentIndex();
25     // If an item is currently selected, interpret Next/Previous. Otherwise,
26     // fallback to the default selection (e.g. first row for Next).
27     if (current.isValid()) {
28         if (cursorAction == MoveNext) {
29             if (current.column() < model()->columnCount()) {
30                 return current.sibling(current.row(), current.column() + 1);
31             }
32             return current;
33         } else if (cursorAction == MovePrevious) {
34             if (current.column() > 0) {
35                 return current.sibling(current.row(), current.column() - 1);
36             }
37             return current;
38         }
39     }
40 
41     return QTreeView::moveCursor(cursorAction, modifiers);
42 }
43 
44 /*!
45     \fn void TabnavTreeView::currentItemChanged(QModelIndex *current, QModelIndex *previous)
46 
47     This signal is emitted whenever the current item changes.
48 
49     \a previous is the item that previously had the focus; \a current is the
50     new current item.
51  */
52 
currentChanged(const QModelIndex & current,const QModelIndex & previous)53 void TabnavTreeView::currentChanged(const QModelIndex &current, const QModelIndex &previous)
54 {
55     QTreeView::currentChanged(current, previous);
56     emit currentItemChanged(current, previous);
57 }
58