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#include "fileselector.h"
FileSelector::FileSelector(QWidget *parent, bool multiselect) :
QWidget(parent), multiselect(multiselect)
{
setLayout(new QVBoxLayout());
list = new QListWidget(this);
layout()->addWidget(list);
filter = new QLineEdit(this);
layout()->addWidget(filter);
connect(filter, SIGNAL(textChanged(QString)), SLOT(filterChanged(QString)));
filter->installEventFilter(this);
list->installEventFilter(this);
QPalette p = QApplication::palette(); //let the list appear selected (does not work with gtk+ style)
p.setColor(QPalette::Inactive, QPalette::Highlight, p.color(QPalette::Active, QPalette::Highlight));
p.setColor(QPalette::Inactive, QPalette::HighlightedText, p.color(QPalette::Active, QPalette::HighlightedText));
list->setPalette(p);
setAttribute(Qt::WA_DeleteOnClose);
if (multiselect)
list->setSelectionMode(QAbstractItemView::ExtendedSelection);
}
void FileSelector::init(const QStringList &files, int current)
{
filter->setFocus();
rawFiles = files;
filterChanged(filter->text());
if (current >= 0 && current < rawFiles.count()) {
int r = 0;
for (int i = 0; i < current; i++)
if (list->item(i)->text() == rawFiles[i]) r++;
if (list->item(r)->text() == rawFiles[current])
list->setCurrentRow(r);
}
}
void FileSelector::setCentered(const QRect &rect)
{
QSize s = rect.size();
QPoint p = rect.topLeft();
int fsw = s.width() / 2;
int scrollbarwidth = 50; //value that works on my computer...
/*if (list->verticalScrollBar()) {
QStyleOptionSlider sos;
sos.initFrom(list->verticalScrollBar());
scrollbarwidth = qAbs(list->verticalScrollBar()->style()->subControlRect(QStyle::CC_ScrollBar, &sos, QStyle::SC_ScrollBarGroove, list->verticalScrollBar()).width());
}*/
QFontMetrics fm = list->fontMetrics();
for (int i = 0; i < rawFiles.size(); i++)
fsw = qMax(fsw, fm.width(rawFiles[i]) + scrollbarwidth );
fsw = qMin(fsw, s.width());
setGeometry(s.width() / 2 - fsw / 2 + p.x(), s.height() / 4 + p.y(), fsw, s.height() / 2);
setMinimumWidth(fsw); //set geometry alone leads to a too small window. but we need to call setGeometry first, or it crashes if fsw = s.width()
}
void FileSelector::filterChanged(const QString &newFilter)
{
QString nf = newFilter;
if (newFilter.contains(':') && QRegExp(".*:[0-9; ]*").exactMatch(newFilter))
nf = newFilter.left(newFilter.lastIndexOf(':'));
QStringList filterList = nf.split(" ");
QList<QPair<QString, int> > oldFiles = currentFiles();
list->clear();
foreach (const QString &s, rawFiles) {
bool skip = false;
foreach (const QString &tf, filterList)
if (!s.contains(tf, Qt::CaseInsensitive)) {
skip = true;
break;
}
if (skip) continue;
list->addItem(s);
}
if (!oldFiles.isEmpty()) {
bool foundOne = false;
for (int o = 0; o < oldFiles.size(); o++) {
const QPair<QString, int> &oldFile = oldFiles[o];
int duplicate = oldFile.second;
for (int i = 0; i < list->count(); i++)
if (list->item(i)->text() == oldFile.first) {
duplicate -= 1;
if (duplicate < 0) {
if (!foundOne) list->setCurrentRow(i);
else if (list->selectionModel() && list->model()) list->selectionModel()->select(list->model()->index(i, 0), QItemSelectionModel::Select);
foundOne = true;
break;
}
}
}
if (foundOne)
return;
}
list->setCurrentRow(0);
}
bool FileSelector::eventFilter(QObject *obj, QEvent *event)
{
if (event->type() == QEvent::KeyPress) {
int key = static_cast<QKeyEvent *>(event)->key();
switch (key) {
case Qt::Key_Up:
case Qt::Key_Down:
case Qt::Key_PageUp:
case Qt::Key_PageDown:
if (obj != filter) break;
{
int offset = -1;
if (key == Qt::Key_Down) offset = 1;
else if (key == Qt::Key_PageUp) offset = - list->height() / qMax(1, list->fontMetrics().height());
else if (key == Qt::Key_PageDown) offset = list->height() / qMax(1, list->fontMetrics().height());
int row = list->currentRow() + offset;
if (row + offset < 0) row = 0;
else if (row >= list->count()) row = list->count() - 1;
if (row == list->currentRow()) break;
list->setCurrentRow(row);
return true;
}
case Qt::Key_Return:
case Qt::Key_Enter:
emitChoosen();
return true;
case Qt::Key_Escape:
close();
return true;
}
} else if (obj == list && event->type() == QEvent::MouseButtonDblClick) {
qDebug() << "??? todo, why is this not called ??";
emitChoosen();
return true;
}
return QObject::eventFilter(obj, event);
}
typedef QPair<QString, int> QPairStringInt;
void FileSelector::emitChoosen()
{
QString jumpTo = filter->text().mid(filter->text().lastIndexOf(':') + 1);
int line = -1, col = -1;
if (!jumpTo.isEmpty()) {
if (!jumpTo.contains(';')) line = jumpTo.trimmed().toInt() - 1;
else {
QStringList sl = jumpTo.split(';');
line = sl[0].trimmed().toInt() - 1;
col = sl[1].trimmed().toInt();
}
}
foreach (const QPairStringInt &p, currentFiles())
emit fileChoosen(p.first, p.second, line, col);
close();
}
QList<QPair<QString, int> > FileSelector::currentFiles()
{
QList<QPair<QString, int> > result;
int cindex = list->currentRow();
if (cindex < 0 || cindex >= rawFiles.count()) return result;
QList<int> indices;
if (!multiselect) indices << cindex;
else if (list->selectionModel())
foreach (const QModelIndex &index, list->selectionModel()->selectedIndexes())
indices << index.row();
foreach (int index, indices) {
QString file = list->item(index)->text();
int duplicate = 0;
for (int i = 0; i < index; i++)
if (list->item(i)->text() == file)
duplicate++;
result << QPair<QString, int>(file, duplicate);
}
return result;
}
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