QT实现文件查找显示列表功能_qt qtableview显示文件列表

1、UI设计，存储结果为FindFileForm.ui

2、编译ui文件生成辅助ui头文件ui_FindFileForm.h

3、实现对话框界面逻辑，FindForm类

#ifndef FIND_FILE_FORM_H
#define  FIND_FILE_FORM_H
#pragma once
#include "ui_FindFileForm.h"
 
class FindFileForm:public QWidget
{
	Q_OBJECT
	public:
		FindFileForm(QWidget* parent = 0);
	protected slots:
		void OnSearch();
		void OnBrowse();
		void OnStop();
		void OnClose();
		void OnTextChanged(const QString &);
	private:
		void ExecuteSearch(const QDir& dir,const QString& name,const QString& content);
		QStringList FindFiles(const QDir& dir,const QString& name,const QString& content);
		void ShowFiles(const QDir& dir,const QStringList& files);
	private:
		Ui_FindFileForm m_UIForm;
		bool m_Stoped;
		int m_nCOunt;
};
#endif //end of FIND_FILE_FORM_H

#include "stdafx.h"
#include "findfileform.h"
 
FindFileForm::FindFileForm(QWidget* parent):QWidget(parent)
{
	m_UIForm.setupUi(this);
	m_UIForm.m_StatusLabel->setText(tr("就绪"));
	m_UIForm.m_ResultLabel->setText(tr("找到0个文件"));
 
	m_UIForm.m_NameComboBox->setEditText(tr("*"));
	m_UIForm.m_NameComboBox->addItem(tr("*"));
	m_UIForm.m_DirComboBox->setEditText(QDir::currentPath());
	m_UIForm.m_DirComboBox->addItem(QDir::currentPath());
	m_UIForm.m_SensitiveCheckBox->setEnabled(false);
	m_UIForm.m_StopPushButton->setEnabled(false);
 
	connect(m_UIForm.m_StopPushButton,SIGNAL(clicked()),this,SLOT(OnStop()));
	connect(m_UIForm.m_SearchPushButton,SIGNAL(clicked()),this,SLOT(OnSearch()));
	connect(m_UIForm.m_BrowsePushButton,SIGNAL(clicked()),this,SLOT(OnBrowse()));
	connect(m_UIForm.m_ClosePushButton,SIGNAL(clicked()),this,SLOT(OnClose()));
	connect(m_UIForm.m_TxtlineEdit,SIGNAL(textChanged(const QString &)),this,SLOT(OnTextChanged(const QString &)));
 
	setLayout(m_UIForm.m_MainVerticalLayout);
	resize(500,500);
 
	m_Stoped = false;
}
 
void FindFileForm::OnSearch()
{
	m_Stoped = false;
	m_nCOunt = 0;
	bool bCaseSensetive = m_UIForm.m_SensitiveCheckBox->isChecked();
	bool bSubfolder = m_UIForm.m_SubfilderCheckBox->isChecked();
	QString dir = m_UIForm.m_DirComboBox->currentText();
	QString content = m_UIForm.m_TxtlineEdit->text();
	QString name = m_UIForm.m_NameComboBox->currentText();
		
	m_UIForm.frame->setEnabled(false);
 
	m_UIForm.m_SearchPushButton->setEnabled(false);
	m_UIForm.m_StopPushButton->setEnabled(true);
	m_UIForm.m_ResultTableWidget->setRowCount(0);
 
	ExecuteSearch(QDir(dir),name,content);
 
	if(m_Stoped)
	{
		m_UIForm.m_StatusLabel->setText(tr("中止"));
	}
	else
	{
		m_UIForm.m_StatusLabel->setText(tr("就绪"));
	}
 
	m_UIForm.frame->setEnabled(true);
 
	m_UIForm.m_SearchPushButton->setEnabled(true);
	m_UIForm.m_StopPushButton->setEnabled(false);
	
}
void FindFileForm::OnBrowse()
{
	QString dir =  QFileDialog::getExistingDirectory(this,tr("浏览文件目录"),QDir::currentPath());
	m_UIForm.m_DirComboBox->addItem(dir);
	m_UIForm.m_DirComboBox->setCurrentIndex(m_UIForm.m_DirComboBox->currentIndex()+1);
	
}
void FindFileForm::OnStop()
{
	m_Stoped = true;
}
void FindFileForm::OnClose()
{
	QWidget::close();
}
void FindFileForm::OnTextChanged(const QString & content)
{
	if(content.isEmpty())
	{
		m_UIForm.m_SensitiveCheckBox->setEnabled(false);
	}
	else
	{
		m_UIForm.m_SensitiveCheckBox->setEnabled(true);
	}
}
 
void FindFileForm::ExecuteSearch(const QDir& dir,const QString& name,const QString& content)
{
	
	if(m_UIForm.m_SubfilderCheckBox->isChecked())
	{
		QStringList folders = dir.entryList(QDir::Dirs|QDir::NoDotAndDotDot);
		for (int i = 0 ; i < folders.size(); i++)
		{
			qApp->processEvents();
			if(m_Stoped)
			{
				break;
			}
			QString strDir = QString(tr("%1/%2")).arg(dir.absolutePath()).arg(folders[i]);
			ExecuteSearch(strDir,name,content);
		}
	}
	
	QStringList files = FindFiles(dir,name,content);
	ShowFiles(dir,files);
	m_nCOunt += files.size();
	m_UIForm.m_ResultLabel->setText(tr("找到%1个文件").arg(m_nCOunt));
}
 
QStringList FindFileForm::FindFiles(const QDir& dir,const QString& name,const QString& content)
{
	QStringList files = dir.entryList(QStringList(name),QDir::Files|QDir::NoSymLinks);
	if(content.isEmpty())
		return files;
 
	Qt::CaseSensitivity sensitive = m_UIForm.m_SensitiveCheckBox->isChecked()?Qt::CaseSensitive:Qt::CaseInsensitive;
 
	QStringList findFiles;
	for (int i = 0 ; i < files.size() ; i++)
	{
		qApp->processEvents();
		if (m_Stoped)
		{
			break;
		}
		QFile file(dir.absoluteFilePath(files[i]));
		if (file.open(QIODevice::ReadOnly))
		{
			QString line;
			QTextStream instream(&file);
			while(!instream.atEnd())
			{
				 if (m_Stoped)
				 {
					 break;
				 }
 
				 line = instream.readLine();
				 if (line.contains(content,sensitive))
				 {
					findFiles<<files[i];
					break;
				 }
			}
		}
	}
 
	return findFiles;
}
 
void FindFileForm::ShowFiles(const QDir& dir,const QStringList& files)
{
	for(int i = 0 ; i < files.size();i++)
	{
		QFile file(dir.absoluteFilePath(files[i]));
		QFileInfo fileInfo(file);
		QString name = fileInfo.fileName();
		qint64 sizes = fileInfo.size();
		QString time =  fileInfo.lastModified().toString(tr("yyyy年yy月yy日"));
		QString permit = fileInfo.isWritable()?tr("可写"):tr("可读");
		QTableWidgetItem* pNameItem = new QTableWidgetItem(name);
		QTableWidgetItem* pPermitItem = new QTableWidgetItem(permit);
		QTableWidgetItem* pTimeItem = new QTableWidgetItem(time);
		QTableWidgetItem* pSizeItem = new QTableWidgetItem(tr("%1KB").arg(int(sizes+1023)/1024));
 
		int rowcount = m_UIForm.m_ResultTableWidget->rowCount();
		m_UIForm.m_ResultTableWidget->insertRow(rowcount);
		m_UIForm.m_ResultTableWidget->setItem(rowcount,0,pNameItem);
		m_UIForm.m_ResultTableWidget->setItem(rowcount,1,pSizeItem);
		m_UIForm.m_ResultTableWidget->setItem(rowcount,2,pTimeItem);
		m_UIForm.m_ResultTableWidget->setItem(rowcount,3,pPermitItem);		
	}
}

5、编写主函数调用

#include "stdafx.h"
#include "findfileform.h"
int main(int argc, char *argv[])
{
	QApplication app(argc, argv);
	QTextCodec::setCodecForTr(QTextCodec::codecForName("gb18030"));
	FindFileForm findForm;
	findForm.Show();
	return app.exec();
}