blob: e646a6249d534131ca24618dd151202ada3088ee (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* SPDX-FileCopyrightText: 2011 Tirtha Chatterjee <[email protected]>
*
* Based on the Itemviews NG project from Trolltech Labs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "kitemlistkeyboardsearchmanager.h"
KItemListKeyboardSearchManager::KItemListKeyboardSearchManager(QObject* parent) :
QObject(parent),
m_isSearchRestarted(false),
m_timeout(1000)
{
m_keyboardInputTime.invalidate();
}
KItemListKeyboardSearchManager::~KItemListKeyboardSearchManager()
{
}
bool KItemListKeyboardSearchManager::shouldClearSearchIfInputTimeReached()
{
const bool keyboardTimeWasValid = m_keyboardInputTime.isValid();
const qint64 keyboardInputTimeElapsed = m_keyboardInputTime.restart();
return (keyboardInputTimeElapsed > m_timeout) || !keyboardTimeWasValid;
}
void KItemListKeyboardSearchManager::addKeys(const QString& keys)
{
if (shouldClearSearchIfInputTimeReached()) {
m_searchedString.clear();
}
const bool newSearch = m_searchedString.isEmpty();
// Do not start a new search if the user pressed Space. Only add
// it to the search string if a search is in progress already.
if (newSearch && keys == QLatin1Char(' ')) {
return;
}
if (!keys.isEmpty()) {
m_searchedString.append(keys);
// Special case:
// If the same key is pressed repeatedly, the next item matching that key should be highlighted
const QChar firstKey = m_searchedString.length() > 0 ? m_searchedString.at(0) : QChar();
const bool sameKey = m_searchedString.length() > 1 && m_searchedString.count(firstKey) == m_searchedString.length();
// Searching for a matching item should start from the next item if either
// 1. a new search is started and a search has not been restarted or
// 2. a 'repeated key' search is done.
const bool searchFromNextItem = (!m_isSearchRestarted && newSearch) || sameKey;
// to remember not to searchFromNextItem if selection was deselected
// losing keyboard search context basically
m_isSearchRestarted = false;
Q_EMIT changeCurrentItem(sameKey ? firstKey : m_searchedString, searchFromNextItem);
}
m_keyboardInputTime.start();
}
bool KItemListKeyboardSearchManager::addKeyBeginsNewSearch() const
{
return m_keyboardInputTime.hasExpired(m_timeout) || m_searchedString.isEmpty();
}
void KItemListKeyboardSearchManager::setTimeout(qint64 milliseconds)
{
m_timeout = milliseconds;
}
qint64 KItemListKeyboardSearchManager::timeout() const
{
return m_timeout;
}
void KItemListKeyboardSearchManager::cancelSearch()
{
m_isSearchRestarted = true;
m_searchedString.clear();
}
void KItemListKeyboardSearchManager::slotCurrentChanged(int current, int previous)
{
Q_UNUSED(previous)
if (current < 0) {
// The current item has been removed. We should cancel the search.
cancelSearch();
}
}
void KItemListKeyboardSearchManager::slotSelectionChanged(const KItemSet& current, const KItemSet& previous)
{
if (!previous.isEmpty() && current.isEmpty() && previous.count() > 0 && current.count() == 0) {
// The selection has been emptied. We should cancel the search.
cancelSearch();
}
}
|
