fileexplorer.cpp

#include "fileexplorer.h"
#include "ui_fileexplorer.h"
#include<QIcon>
#include<QDir>
#include<QInputDialog>
#include<QTimer>
#include<QCheckBox>
FileExplorer::FileExplorer(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::FileExplorer),
    localFileContainer(new LocalFileContainer(this)),
    remoteFileContainer(new RemoteFileContainer(this)),
    doubleCliked(false)
{
    ui->setupUi(this);
    //添加远程文件浏览器和本地文件浏览器
    ui->fileListLayout->addWidget(remoteFileContainer);
    ui->fileListLayout->addWidget(localFileContainer);
    showLocalFileInfo();
    //连接信号槽实现拖拽和点击的功能
    connect(ui->remoteDir,&QListWidget::itemClicked,this,&FileExplorer::changeRemoteWorkDir);   
    connect(ui->localDir,&QListWidget::itemClicked,this,[this](QListWidgetItem* item){
        qDebug()<<"doubleclicked:"<<doubleCliked;
        if(!doubleCliked){
            QTimer::singleShot(100,this,[this,item]{changeLocalWorkDir(item);});

        }
    }); 
    connect(remoteFileContainer,&QListWidget::itemDoubleClicked,this,&FileExplorer::openRemoteFile);
    connect(localFileContainer,&QListWidget::itemDoubleClicked,this,&FileExplorer::openLocalFile);
    connect(localFileContainer,&LocalFileContainer::dragIn,this,&FileExplorer::downloadFile);
    connect(remoteFileContainer,&RemoteFileContainer::dragIn,this,&FileExplorer::uploadFile);
    connect(remoteFileContainer,&FileContainer::renameFile,this,&FileExplorer::renameFile);
    connect(remoteFileContainer,&FileContainer::removeDir,this,&FileExplorer::removeDir);
    connect(remoteFileContainer,&FileContainer::makeDir,this,&FileExplorer::makeDir);

    //双击可以输入路径，为了处理双击的时候不处理单击需要借用一个变量doubleClicked
    connect(ui->localDir,&QListWidget::itemDoubleClicked,this,[this](QListWidgetItem* item){
        qDebug()<<"double click";
        doubleCliked=true;
        bool ok;
        QString target=QInputDialog::getText(this,tr("Change Directory"),tr("Enter Path"),QLineEdit::Normal,item->data(256).toString(),&ok);
        if(ok && !target.isEmpty()){
            showLocalFileInfo(target);
        }
    });
}

FileExplorer::~FileExplorer()
{
    delete ui;
}

void FileExplorer::bindClient(ClientCore* clientLogin){
    //绑定客户端，如果客户端登录失败则要求重新连接
    if(clientLogin->getState()<LOGIN){
        ui->reconnectButton->setEnabled(true);
        ui->hintBox->setText("Error: Please reconnect to the server!");
    }
    else{
        ui->reconnectButton->setEnabled(false);
        ui->hintBox->setText("Welcome!");
    }
    client=clientLogin;

    //连接信号槽接收客户端处理各种命令的信号
    connect(client,&ClientCore::fileInfoGeted,this,&FileExplorer::showRemoteFileInfo);
    connect(client,&ClientCore::pwdGeted,this,&FileExplorer::showRemoteWorkDir);
    connect(client,&ClientCore::serverReponse,this,[this](QString response){
        ui->serverResponse->append(response);
    });
    connect(client,&ClientCore::retrSuccess,this,&FileExplorer::downloadSuccess);
    connect(client,&ClientCore::storSuccess,this,[this]{
        ui->hintBox->setText("STOR Success");
        client->commandPWD();
    });
    connect(client,&ClientCore::rntoSuccess,this,[this]{
        ui->hintBox->setText("Rename Success");
        client->commandPWD();
    });
    connect(client,&ClientCore::rmdSuccess,this,[this]{
        ui->hintBox->setText("RMD Success");
        client->commandPWD();
    });
    connect(client,&ClientCore::mkdSuccess,this,[this]{
        ui->hintBox->setText("MKD Success");
        client->commandPWD();
    });
    connect(client,&ClientCore::quitSuccess,this,[this]{
        disconnect(client,nullptr,this,nullptr);
        emit sessionClosed();
    });
    connect(client,&ClientCore::remoteClosed,this,[this]{
        ui->reconnectButton->setEnabled(true);
        ui->hintBox->setText("Error: Please reconnect to the server!");
    });
    connect(client,&ClientCore::initSuccess,this,[this](bool flag){
            if(flag==false){
                ui->reconnectButton->setEnabled(true);
                ui->hintBox->setText("Error: Please reconnect to the server!");
            }else{
                ui->reconnectButton->setEnabled(false);
                ui->hintBox->setText("Welcome!");
            }
    });
    connect(ui->isPassive,&QCheckBox::stateChanged,client,&ClientCore::setPassive);
    connect(client,&ClientCore::commandFailed,this,[this](QString info){
        if(info.isEmpty())
            ui->hintBox->setText("Command Failed.\nCheck the response on the left for information");
        else
            ui->hintBox->setText(info);
    });
}

void FileExplorer::showRemoteFileInfo(QString infoReceived){
    remoteFileContainer->clear();
    auto infos=infoReceived.split('\n');
    //实现解析文件信息
    //data 5用于标识文件类型 256存储文件真实的信息（全名等）
    for(auto info:infos){
        info=info.trimmed();
        if(info.isEmpty())continue;
        if(info[0]=='-'){
            QListWidgetItem* temp=new QListWidgetItem(info.split(' ').last());
            temp->setIcon(QIcon(":/icons/file"));
            temp->setData(5,"file");
            temp->setData(Qt::ToolTipRole,info);
            remoteFileContainer->addItem(temp);
        }else if(info[0]=='d'){
            QListWidgetItem* temp=new QListWidgetItem(info.split(' ').last());
            temp->setIcon(QIcon(":/icons/dir"));
            temp->setData(5,"dir");
            temp->setData(Qt::ToolTipRole,info);
            remoteFileContainer->addItem(temp);
        }else if(info[0]=='l'){
            QListWidgetItem* temp=new QListWidgetItem(info.split(' ').last());
            temp->setIcon(QIcon(":/icons/link"));
            temp->setData(5,"link");
            temp->setData(Qt::ToolTipRole,info);
            remoteFileContainer->addItem(temp);
        }else{
            //其他类型暂时不支持解析
            continue;
        }
    }
}
void FileExplorer::showRemoteWorkDir(QString workdir){
    ui->remoteDir->clear();
    auto dirs=workdir.split('/');
    QString prefix="";
    if(workdir=="/")dirs.pop_front();//分隔开的时候最前面一个不要.所有pwd是没有后缀/的
    for(auto dir:dirs){
        QListWidgetItem* temp=new QListWidgetItem(QString("%1/").arg(dir));
        prefix+=dir+'/';
        //qDebug()<<"remote prefix"<<prefix;
        temp->setData(256,prefix);
        ui->remoteDir->addItem(temp);
    }
    client->commandLIST();
}

void FileExplorer::changeRemoteWorkDir(QListWidgetItem* item){
    client->commandCWD(item->data(256).toString());
}
void FileExplorer::showLocalFileInfo(QString localPath){

    if(localPath.isEmpty())
        localPath=QDir::currentPath();
    //先检测是否在
    QDir localDir=QDir(localPath);
    if(!localDir.exists())return;
    localWorkDir=localPath;//改变工作目录
    localFileContainer->clear();
    qDebug()<<"local path:"<<localPath;
    for(auto fileInfo:localDir.entryInfoList()){
        qDebug()<<fileInfo.fileName();
        if(fileInfo.fileName()=="." || fileInfo.fileName()=="..")continue;
        //qDebug()<<fileInfo.absoluteFilePath();
        QListWidgetItem* temp=new QListWidgetItem(fileInfo.fileName());
        if(fileInfo.isDir()){
            temp->setIcon(QIcon(":/icons/dir"));
            temp->setData(5,"dir");
        }else if(fileInfo.isFile()){
            temp->setIcon(QIcon(":/icons/file"));
            temp->setData(5,"file");
        }else if(fileInfo.isSymLink()){
            temp->setIcon(QIcon(":/icons/link"));
            temp->setData(5,"link");
        }
        localFileContainer->addItem(temp);
    }

    auto dirs=localPath.split('/');
    QString prefix="";
    if(localPath=="/"){
        //mac或linux下
        dirs.pop_front();
    }
    ui->localDir->clear();
    for(auto dir:dirs){

        QListWidgetItem* temp=new QListWidgetItem(QString("%1/").arg(dir));
        prefix+='/'+dir;
        temp->setData(256,prefix.mid(1));
        ui->localDir->addItem(temp);
    }
}

void FileExplorer::changeLocalWorkDir(QListWidgetItem* item){
    if(!doubleCliked)
        showLocalFileInfo(item->data(256).toString());
    else doubleCliked=false;
}

void FileExplorer::openRemoteFile(QListWidgetItem* item){
    if(item->data(5).toString()=="dir"){
        client->commandCWD(item->data(0).toString());
    }

}
void FileExplorer::openLocalFile(QListWidgetItem* item){
    if(item->data(5).toString()=="dir"){
        showLocalFileInfo(localWorkDir+'/'+item->data(0).toString());
    }
}

void FileExplorer:: downloadFile(QString sourcefile){
    ui->hintBox->setText(QString("Downloading %1").arg(sourcefile));
    client->commandRETR(sourcefile,localWorkDir);
}

void FileExplorer::downloadSuccess(){
    ui->hintBox->setText("Download file successfully");
    showLocalFileInfo(localWorkDir);
}

void  FileExplorer::uploadFile(QString sourcefile){
    ui->hintBox->setText(QString("Uploading %1").arg(sourcefile));
    client->commandSTOR(sourcefile,localWorkDir);
}

void FileExplorer::renameFile(QString source){
    bool ok;
    QString target=QInputDialog::getText(this,tr("Rename File"),tr("Enter New File Name"),QLineEdit::Normal,source,&ok);
    if(ok && !target.isEmpty()){
        client->commandRNFR(source,target);
    }

}
void FileExplorer::removeDir(QString dir){
    client->commandRMD(dir);
}

void FileExplorer::makeDir(){
    bool ok;
    QString target=QInputDialog::getText(this,tr("New Directory"),tr("Enter Name"),QLineEdit::Normal,0,&ok);
    if(ok && !target.isEmpty()){
        client->commandMKD(target);
    }
}

void FileExplorer::closeSession(){
    //让client core发送QUIT信号，如果1秒没有反应就退出
    client->commandQUIT();
    QTimer::singleShot(1000,this,[this]{
        emit sessionClosed();
    });
}

void FileExplorer::on_reconnectButton_clicked()
{
    client->connectServer();
    if(client->getState()<LOGIN){
        ui->reconnectButton->setEnabled(true);
        ui->hintBox->setText("Error: Please reconnect to the server!");
    }
}


void FileExplorer::on_refreshButton_clicked()
{
    if(client->getState()<LOGIN)return;
    client->commandPWD();
}