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
|
/***************************************************************************
* Copyright (C) 2011 by Tirtha Chatterjee <[email protected]> *
* *
* Based on the Itemviews NG project from Trolltech Labs: *
* http://qt.gitorious.org/qt-labs/itemviews-ng *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#include "kitemlistkeyboardsearchmanager.h"
KItemListKeyboardSearchManager::KItemListKeyboardSearchManager(QObject* parent) :
QObject(parent),
m_timeout(1000)
{
m_keyboardInputTime.invalidate();
}
KItemListKeyboardSearchManager::~KItemListKeyboardSearchManager()
{
}
void KItemListKeyboardSearchManager::addKeys(const QString& keys)
{
const bool keyboardTimeWasValid = m_keyboardInputTime.isValid();
const qint64 keyboardInputTimeElapsed = m_keyboardInputTime.restart();
if (keyboardInputTimeElapsed > m_timeout || !keyboardTimeWasValid) {
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 == QLatin1String(" ")) {
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, or
// 2. a 'repeated key' search is done.
const bool searchFromNextItem = newSearch || sameKey;
emit changeCurrentItem(sameKey ? firstKey : m_searchedString, searchFromNextItem);
}
m_keyboardInputTime.start();
}
void KItemListKeyboardSearchManager::setTimeout(qint64 milliseconds)
{
m_timeout = milliseconds;
}
qint64 KItemListKeyboardSearchManager::timeout() const
{
return m_timeout;
}
void KItemListKeyboardSearchManager::cancelSearch()
{
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();
}
}
|
