QT学习笔记之十四 StringMatch

#ifndef STRINGMATCH_H
#define STRINGMATCH_H
#include <QtGui/QDialog>
class QComboBox;
class QLabel;
class QLineEdit;
class QListView;
class QSortFilterProxyModel;
class QStringListModel;
namespace Ui
{
class StringMatch;
}
class StringMatch : public QDialog
{
Q_OBJECT
public:
StringMatch(QWidget *parent = 0);
~StringMatch();
private slots:
void reapplyFilter();
private:
Ui::StringMatch *ui;
QStringListModel *sourceModel;
QSortFilterProxyModel *proxyModel;
QListView *listView;
QLabel *filterLabel;
QLabel *syntaxLabel;
QLineEdit *filterLineEdit;
QComboBox *syntaxComboBox;
};
#endif // STRINGMATCH_H

#include <QtGui>
#include "stringmatch.h"
#include "ui_stringmatch.h"
StringMatch::StringMatch(QWidget *parent)
: QDialog(parent), ui(new Ui::StringMatch)
{
ui->setupUi(this);
QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale());
QTextCodec::setCodecForTr(QTextCodec::codecForName("utf8"));
//sourceModel
sourceModel = new QStringListModel(this);
sourceModel->setStringList(QColor::colorNames());
//proxyModel
proxyModel = new QSortFilterProxyModel(this);
proxyModel->setSourceModel(sourceModel);
proxyModel->setFilterKeyColumn(0);
//listView
listView = new QListView;
listView->setModel(proxyModel);
listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
//filter
filterLabel = new QLabel(tr("要匹配的字符串"));
filterLineEdit = new QLineEdit;
filterLabel->setBuddy(filterLineEdit);
//syntax
syntaxLabel = new QLabel("匹配方式选择");
syntaxComboBox = new QComboBox;
syntaxComboBox->addItem("正则表达式",QRegExp::RegExp);   //A rich Perl-like pattern matching syntax. This is the default.
syntaxComboBox->addItem("通配符",QRegExp::Wildcard);   //This provides a simple pattern matching syntax similar to that used by shells (command interpreters) for "file globbing".
syntaxComboBox->addItem("完全匹配",QRegExp::FixedString);   //This is equivalent to using the RegExp pattern on a string in which all metacharacters are escaped using
//当filterLineEdit和syntaxComboBox
connect(filterLineEdit,SIGNAL(textChanged(const QString &)),this,SLOT(reapplyFilter()));
connect(syntaxComboBox,SIGNAL(currentIndexChanged(int)),this,SLOT(reapplyFilter()));
//布局
QGridLayout *layout = new QGridLayout;
layout->addWidget(listView,0,0,1,2);
layout->addWidget(filterLabel,1,0);
layout->addWidget(filterLineEdit,1,1);
layout->addWidget(syntaxLabel,2,0);
layout->addWidget(syntaxComboBox,2,1);
setLayout(layout);
setWindowTitle(tr("String Matching"));
}
StringMatch::~StringMatch()
{
delete ui;
}
void StringMatch::reapplyFilter()
{
QRegExp::PatternSyntax syntax = QRegExp::PatternSyntax(syntaxComboBox->itemData(
syntaxComboBox->currentIndex()).toInt());
QRegExp regExp(filterLineEdit->text(),Qt::CaseInsensitive,syntax);
proxyModel->setFilterRegExp(regExp);
}

QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale());
QTextCodec::setCodecForTr(QTextCodec::codecForName("utf8"));