code cleanup
[case] / src / fileoperator.cpp
index bd4c667..b25ab3b 100644 (file)
 #include "fileoperator.h"
 
 #include <QtGui>
-#include <QDir>
 #include <QMessageBox>
 #include <QHBoxLayout>
-#include <QChar>
 
 #include "dialog.h"
 #include "utils.h"
 
-#include <math.h>
-#include <errno.h>
-#include <iostream>
-
-
-#define BLOCK_SIZE 524288
-
-
-#define PAUSE()                                                                             \
-    if (pause) {                                                                            \
-        emit operationPaused(this);                                                         \
-        waitOnCond();                                                                       \
-    }
-
-
-#define SHOW_ERROR_PROMPT(promptString, fileName)                                           \
-    response = FileOperator::NONE;                                                          \
-    if (ignoreAll[errno]) {                                                                 \
-        response = FileOperator::IGNORE;                                                    \
-    } else {                                                                                \
-        char buf[255];                                                                      \
-        char *realBuf = buf;                                                                \
-        if (errno == 255) {                                                                 \
-            strcpy(buf, tr("File is sequential").toStdString().c_str());                    \
-        } else {                                                                            \
-            realBuf = strerror_r(errno, buf, 255);                                          \
-        }                                                                                   \
-        emit showErrorPrompt(this, promptString + " " + realBuf + ".", fileName, errno);    \
-        waitOnCond();                                                                       \
-    }
-
-
-#define ERROR_PROMPT(operation, promptString, fileName)                                     \
-{                                                                                           \
-    response = FileOperator::NONE;                                                          \
-    while (!abort && operation) {                                                           \
-        SHOW_ERROR_PROMPT(promptString, fileName)                                           \
-        if (response == FileOperator::IGNORE) {                                             \
-            break;                                                                          \
-        }                                                                                   \
-        PAUSE()                                                                             \
-    }                                                                                       \
-}
-
-
-#define SPECIAL_COPY_ERROR_PROMPT(operation, promptString, fileName)                        \
-{                                                                                           \
-    ERROR_PROMPT(operation, promptString, fileName)                                         \
-    if (abort || response == FileOperator::IGNORE) {                                        \
-        if (!abort) {                                                                       \
-            updateProgress(fileSizeMap[path]);                                              \
-            removeExcludeFiles.insert(path);                                                \
-        }                                                                                   \
-        return;                                                                             \
-    }                                                                                       \
-}
-
-
-#define OVERWRITE_PROMPT(file, newFile)                                                     \
-{                                                                                           \
-    response = FileOperator::NONE;                                                          \
-                                                                                            \
-    while (!abort && response == FileOperator::NONE && newFile.exists()) {                  \
-        if (overwriteAll != FileOperator::NONE) {                                           \
-            response = overwriteAll;                                                        \
-        } else {                                                                            \
-            emit showOverwritePrompt(this, newFile.absoluteFilePath(),                      \
-                newFile.isDir() && file.isDir());                                           \
-            waitOnCond();                                                                   \
-                                                                                            \
-            PAUSE()                                                                         \
-            else if (response == FileOperator::NONE) {                                      \
-                emit showInputFilenamePrompt(this, newFile, file.isDir());                  \
-                waitOnCond();                                                               \
-                if (newNameFromDialog.size()) {                                             \
-                    newFile.setFile(newNameFromDialog);                                     \
-                }                                                                           \
-            }                                                                               \
-        }                                                                                   \
-    }                                                                                       \
-    if (response == FileOperator::ASK) response = FileOperator::NONE;                       \
-}
-
 
 FileOperator::FileOperator(QWidget *parent) : QWidget(parent) {
     QHBoxLayout *layout = new QHBoxLayout;
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(1);
     setLayout(layout);
+
     qRegisterMetaType<QFileInfo>("QFileInfo");
+    qRegisterMetaType<time_t>("time_t");
+
     loadOperationIcons(palette(), "delete_small", deleteIcon, inverseDeleteIcon);
     loadOperationIcons(palette(), "copy_small", copyIcon, inverseCopyIcon);
     loadOperationIcons(palette(), "move_small", moveIcon, inverseMoveIcon);
 }
 
 
-QString FileOperator::shortenPath(const QString &path) {
-    QString homePath = QFSFileEngine::homePath();
-
-    if (path.indexOf(homePath, 0) == 0) {
-        QString result = path;
-
-        result.replace(0, homePath.size(), "~");
-        return result;
-    }
-
-    return path;
-}
-
-
-QString FileOperator::unwindPath(const QString &path) {
-    QString result = path;
-    // if ~ is the first character and / or nothing follows it, replace with home dir
-    if (path == "~" || path.indexOf("~/", 0) == 0) {
-        QString homePath = QFSFileEngine::homePath();
-        result.replace(0, 1, homePath);
-    // in case someone wants to enter a dir called ~ in the current dir, he can escape it with \~
-    } else if (path == "\\~" || path.indexOf("\\~/", 0) == 0) {
-        result.replace(0, 2, "~");
-    }
-
-    return result;
-}
-
-
 void FileOperator::deleteFiles(const QFileInfoList &files) {
     QString title, desc;
     if (files.size() == 1) {
         title = tr("Delete file");
         desc = tr("Are you sure you want to delete %1?")
-            .arg(FileOperator::shortenPath(files[0].absoluteFilePath()));
+            .arg(shortenPath(files[0].absoluteFilePath()));
     } else {
         title = tr("Delete files");
         desc = tr("You are about to delete %1 files. Are you sure you want to continue?").arg(files.size());
@@ -171,9 +60,8 @@ void FileOperator::deleteFiles(const QFileInfoList &files) {
     );
 
     if(confirm == QMessageBox::Yes) {
-        DeleteThread *t = new DeleteThread(files);
-        t->progressBar->setIcons(deleteIcon, inverseDeleteIcon);
-        caterNewThread(t);
+        ProgressBar *bar = new ProgressBar(deleteIcon, inverseDeleteIcon);
+        initOperation(new DeleteThread(files), bar);
     }
 }
 
@@ -183,12 +71,12 @@ void FileOperator::copyFiles(const QFileInfoList &files, QDir &destination) {
     if (files.size() == 1) {
         title = tr("Copy file");
         desc = tr("Are you sure you want to copy %1 to %2?")
-            .arg(FileOperator::shortenPath(files[0].absoluteFilePath()))
-            .arg(FileOperator::shortenPath(destination.absolutePath()));
+            .arg(shortenPath(files[0].absoluteFilePath()))
+            .arg(shortenPath(destination.absolutePath()));
     } else {
         title = tr("Copy files");
         desc = tr("You are about to copy %1 files to %2. Are you sure you want to continue?")
-            .arg(files.size()).arg(FileOperator::shortenPath(destination.absolutePath()));
+            .arg(files.size()).arg(shortenPath(destination.absolutePath()));
     }
 
     int confirm = QMessageBox::warning(
@@ -200,11 +88,9 @@ void FileOperator::copyFiles(const QFileInfoList &files, QDir &destination) {
     );
 
     if(confirm == QMessageBox::Yes) {
-        CopyThread *t = new CopyThread(files, destination);
-        t->progressBar->setIcons(copyIcon, inverseCopyIcon);
-        t->progressBar->fromText = shortenPath(files[0].absolutePath());
-        t->progressBar->toText = FileOperator::shortenPath(destination.absolutePath());
-        caterNewThread(t);
+        ProgressBar *bar = new ProgressBar(copyIcon, inverseCopyIcon);
+        bar->setBottomTexts(shortenPath(files[0].absolutePath()), shortenPath(destination.absolutePath()));
+        initOperation(new CopyThread(files, destination), bar);
     }
 }
 
@@ -217,12 +103,12 @@ void FileOperator::moveFiles(const QFileInfoList &files, QDir &destination) {
     if (files.size() == 1) {
         title = tr("Move file");
         desc = tr("Are you sure you want to move %1 to %2?")
-            .arg(FileOperator::shortenPath(files[0].absoluteFilePath()))
-            .arg(FileOperator::shortenPath(destination.absolutePath()));
+            .arg(shortenPath(files[0].absoluteFilePath()))
+            .arg(shortenPath(destination.absolutePath()));
     } else {
         title = tr("Move files");
         desc = tr("You are about to move %1 files to %2. Are you sure you want to continue?")
-            .arg(files.size()).arg(FileOperator::shortenPath(destination.absolutePath()));
+            .arg(files.size()).arg(shortenPath(destination.absolutePath()));
     }
 
     int confirm = QMessageBox::warning(
@@ -234,16 +120,14 @@ void FileOperator::moveFiles(const QFileInfoList &files, QDir &destination) {
     );
 
     if(confirm == QMessageBox::Yes) {
-        MoveThread *t = new MoveThread(files, destination);
-        t->progressBar->setIcons(moveIcon, inverseMoveIcon);
-        t->progressBar->fromText = shortenPath(files[0].absolutePath());
-        t->progressBar->toText = shortenPath(destination.absolutePath());
-        caterNewThread(t);
+        ProgressBar *bar = new ProgressBar(moveIcon, inverseMoveIcon);
+        bar->setBottomTexts(shortenPath(files[0].absolutePath()), shortenPath(destination.absolutePath()));
+        initOperation(new MoveThread(files, destination), bar);
     }
 }
 
 
-void FileOperator::showErrorPrompt(FileManipulatorThread* manipulator,
+void FileOperator::showErrorPrompt(OperationThread* op,
     const QString &message,
     const QString &fileName,
     const int err)
@@ -254,27 +138,27 @@ void FileOperator::showErrorPrompt(FileManipulatorThread* manipulator,
     QAbstractButton *retryButton = msgBox.addButton(QMessageBox::Retry);
     QAbstractButton *ignoreButton = msgBox.addButton(QMessageBox::Ignore);
     QAbstractButton *ignoreAllButton = msgBox.addButton(tr("Ignore All"), QMessageBox::AcceptRole);
-    msgBox.setText(message.arg(FileOperator::shortenPath(fileName)));
+    msgBox.setText(message.arg(shortenPath(fileName)));
 
     msgBox.exec();
 
     if (msgBox.clickedButton() == cancelButton) {
-        manipulator->pause = true;
-        manipulator->setResponse(RETRY);
+        op->pause = true;
+        op->setResponse(OperationThread::RETRY);
     } else if (msgBox.clickedButton() == abortButton) {
-        manipulator->setResponse(ABORT);
+        op->setResponse(OperationThread::ABORT);
     } else if (msgBox.clickedButton() == retryButton) {
-        manipulator->setResponse(RETRY);
+        op->setResponse(OperationThread::RETRY);
     } else if (msgBox.clickedButton() == ignoreButton) {
-        manipulator->setResponse(IGNORE);
+        op->setResponse(OperationThread::IGNORE);
     } else if (msgBox.clickedButton() == ignoreAllButton) {
-        manipulator->setResponse(IGNORE, true, err);
+        op->setResponse(OperationThread::IGNORE, true, err);
     }
 }
 
 
 void FileOperator::showOverwritePrompt(
-    FileManipulatorThread* manipulator,
+    OperationThread* op,
     const QString &fileName,
     const bool dirOverDir)
 {
@@ -290,39 +174,39 @@ void FileOperator::showOverwritePrompt(
 
     if (dirOverDir) {
         msgBox.setText(tr("Directory %1 already exists. Overwrite the files inside?")
-            .arg(FileOperator::shortenPath(fileName)));
+            .arg(shortenPath(fileName)));
         askButton = msgBox.addButtonFirst(tr("Ask"), QDialogButtonBox::AcceptRole);
         skipDirButton = msgBox.addButtonSecond(tr("Skip"), QDialogButtonBox::NoRole);
     } else {
-        msgBox.setText(tr("File %1 already exists. Overwrite?").arg(FileOperator::shortenPath(fileName)));
+        msgBox.setText(tr("File %1 already exists. Overwrite?").arg(shortenPath(fileName)));
     }
 
     msgBox.exec();
 
     if (msgBox.clickedButton == 0) {
-        manipulator->pause = true;
-        manipulator->setResponse(NONE);
+        op->pause = true;
+        op->setResponse(OperationThread::NONE);
     } else if (msgBox.clickedButton == abortButton) {
-        manipulator->setResponse(ABORT);
+        op->setResponse(OperationThread::ABORT);
     } else if (msgBox.clickedButton == yesButton) {
-        manipulator->setResponse(OVERWRITE);
+        op->setResponse(OperationThread::OVERWRITE);
     } else if (msgBox.clickedButton == yesToAllButton) {
-        manipulator->setResponse(OVERWRITE, true);
+        op->setResponse(OperationThread::OVERWRITE, true);
     } else if (msgBox.clickedButton == noButton) {
-        manipulator->setResponse(KEEP);
+        op->setResponse(OperationThread::KEEP);
     } else if (msgBox.clickedButton == noToAllButton) {
-        manipulator->setResponse(KEEP, true);
+        op->setResponse(OperationThread::KEEP, true);
     } else if (msgBox.clickedButton == askButton) {
-        manipulator->setResponse(ASK);
+        op->setResponse(OperationThread::ASK);
     } else if (msgBox.clickedButton == newNameButton) {
-        manipulator->setResponse(NONE);
+        op->setResponse(OperationThread::NONE);
     } else if (msgBox.clickedButton == skipDirButton) {
-        manipulator->setResponse(SKIP_DIR);
+        op->setResponse(OperationThread::SKIP_DIR);
     }
 }
 
 
-void FileOperator::showInputFilenamePrompt(FileManipulatorThread* manipulator,
+void FileOperator::showInputFilenamePrompt(OperationThread* op,
     const QFileInfo &file,
     const bool dir)
 {
@@ -335,9 +219,7 @@ void FileOperator::showInputFilenamePrompt(FileManipulatorThread* manipulator,
         prompt = tr("Enter the new file name.");
     }
 
-    manipulator->mutex.lock();
-
-    manipulator->newNameFromDialog = "";
+    op->newNameFromDialog = "";
     QString text = file.fileName();
 
     while (true) {
@@ -347,65 +229,44 @@ void FileOperator::showInputFilenamePrompt(FileManipulatorThread* manipulator,
 
         error = "";
         if (text.contains(QRegExp("[\"*/:<>?\\\\|]"))) {
-            error = "<small><br/><font color = 'red'>" + tr("The name cannot contain any of the following characters: ") +
+            error = "<small><br/><font color = 'red'>" +
+                tr("The name cannot contain any of the following characters: ") +
                 "\"*/:&lt;&gt;?\\|</font></small>";
         } else if (ok && !text.isEmpty()) {
             QFileInfo info(file.path() + "/" + text);
-            manipulator->newNameFromDialog = info.absoluteFilePath();
+            op->newNameFromDialog = info.absoluteFilePath();
             break;
         }
     }
 
-    manipulator->mutex.unlock();
-    manipulator->wake();
-}
-
-
-void FileOperator::remove(FileManipulatorThread* manipulator) {
-    manipulator->wait();
-    layout()->removeWidget(manipulator->progressBar);
-    manipulatorList.removeAll(manipulator);
-    delete manipulator;
+    op->wake();
 }
 
 
-void FileOperator::setBarSize(FileManipulatorThread* manipulator, unsigned int size) {
-    manipulator->progressBar->setMinimum(0);
-    manipulator->progressBar->setMaximum(size);
+void FileOperator::remove(OperationThread* op) {
+    op->wait();
+    ProgressBar *bar = get(op);
+    layout()->removeWidget(bar);
+    opList.removeAll(qMakePair(op, bar));
+    delete op;
+    delete bar;
 }
 
 
-void FileOperator::updateProgress(FileManipulatorThread* manipulator, int value) {
-    manipulator->setText(value);
-}
-
-
-void FileOperator::updateMainText(FileManipulatorThread* manipulator, const QString &text) {
-    manipulator->progressBar->mainText = text;
-    manipulator->progressBar->mainText.remove(0, manipulator->progressBar->fromText.size() + 1);
-    manipulator->progressBar->repaint();
-}
-
+void FileOperator::togglePauseOperation(ProgressBar* bar) {
+    OperationThread *op = get(bar);
 
-void FileOperator::showPaused(FileManipulatorThread* manipulator) {
-    manipulator->progressBar->paused = true;
-    manipulator->progressBar->repaint();
-}
-
-
-void FileOperator::togglePauseOperation(FileManipulatorThread* manipulator) {
-    if (manipulator->pause) {
-        manipulator->pause = false;
-        manipulator->progressBar->paused = false;
-        manipulator->progressBar->repaint();
-        manipulator->wake();
+    if (op->pause) {
+        op->wake();
     } else {
-        manipulator->pause = true;
+        op->pause = true;
     }
 }
 
 
-void FileOperator::abortOperation(FileManipulatorThread* manipulator) {
+void FileOperator::abortOperation(ProgressBar* bar) {
+    OperationThread *op = get(bar);
+
     int confirm = QMessageBox::warning(
         0,
         tr("Abort operation"),
@@ -415,598 +276,52 @@ void FileOperator::abortOperation(FileManipulatorThread* manipulator) {
     );
 
     if(confirm == QMessageBox::Yes) {
-        manipulator->abort = true;
-        manipulator->pause = false;
-        manipulator->wake();
-    }
-}
-
-
-void FileOperator::caterNewThread(FileManipulatorThread *thread) {
-    manipulatorList.append(thread);
-
-    connect(thread, SIGNAL(showErrorPrompt(FileManipulatorThread*, const QString&, const QString&, const int)),
-        this, SLOT(showErrorPrompt(FileManipulatorThread*, const QString&, const QString&, const int)));
-    connect(thread, SIGNAL(showOverwritePrompt(FileManipulatorThread*, const QString&, bool)),
-        this, SLOT(showOverwritePrompt(FileManipulatorThread*, const QString&, bool)));
-    connect(thread, SIGNAL(showInputFilenamePrompt(FileManipulatorThread*, const QFileInfo&, bool)),
-        this, SLOT(showInputFilenamePrompt(FileManipulatorThread*, const QFileInfo&, bool)));
-    connect(thread, SIGNAL(finished(FileManipulatorThread*)),
-        this, SLOT(remove(FileManipulatorThread*)));
-    connect(thread, SIGNAL(setBarSize(FileManipulatorThread*, unsigned int)),
-        this, SLOT(setBarSize(FileManipulatorThread*, unsigned int)));
-    connect(thread, SIGNAL(updateProgress(FileManipulatorThread*, int)),
-        this, SLOT(updateProgress(FileManipulatorThread*, int)));
-    connect(thread, SIGNAL(updateFileName(FileManipulatorThread*, QString)),
-        this, SLOT(updateMainText(FileManipulatorThread*, QString)));
-    connect(thread, SIGNAL(operationPaused(FileManipulatorThread*)),
-        this, SLOT(showPaused(FileManipulatorThread*)));
-
-    connect(thread->progressBar, SIGNAL(togglePauseOperation(FileManipulatorThread*)),
-        this, SLOT(togglePauseOperation(FileManipulatorThread*)));
-    connect(thread->progressBar, SIGNAL(abortOperation(FileManipulatorThread*)),
-        this, SLOT(abortOperation(FileManipulatorThread*)));
-
-    layout()->addWidget(thread->progressBar);
-    thread->start(QThread::LowestPriority);
-}
-
-
-FileManipulatorThread::FileManipulatorThread(const QFileInfoList files, QDir dest) :
-    progressBar(new ProgressBar(this)),
-    abort(false),
-    pause(false),
-    files(files),
-    dest(dest),
-    response(FileOperator::NONE),
-    overwriteAll(FileOperator::NONE),
-    lastTimeUpdate(0),
-    startTime(0),
-    waitTime(0),
-    barSize(0),
-    barValue(0),
-    fileSize(0),
-    fileValue(0)
-{
-    memset(ignoreAll, false, sizeof(ignoreAll));
-}
-
-
-FileManipulatorThread::~FileManipulatorThread() {
-    if (!abort && progressBar->value() < progressBar->maximum()) {
-        std::cout << "WARNING: deleting a progressbar which's value " << progressBar->value() <<
-            " has not reached maximum of " << progressBar->maximum() << std::endl;
-    }
-    delete progressBar;
-}
-
-
-void FileManipulatorThread::setResponse(
-    const FileOperator::Response response,
-    const bool applyToAll,
-    const int err)
-{
-    mutex.lock();
-
-    this->response = response;
-
-    if (applyToAll) {
-        if (response == FileOperator::KEEP
-            || response == FileOperator::OVERWRITE
-            || response == FileOperator::NONE)
-        {
-            overwriteAll = response;
-        }
-
-        if (response == FileOperator::IGNORE) {
-            ignoreAll[err] = true;
-        }
-    }
-
-    if (response == FileOperator::ABORT) abort = true;
-
-    mutex.unlock();
-    wake();
-}
-
-
-void FileManipulatorThread::processFiles(const QFileInfoList &files) {
-    for (QFileInfoList::const_iterator it = files.begin(); it != files.end(); ++it) {
-        PAUSE();
-        if (abort) break;
-        perform(*it);
-    }
-}
-
-
-bool FileManipulatorThread::remove(QString &fileName, const bool doUpdates) {
-    return remove(QFileInfo(fileName), doUpdates);
-}
-
-
-bool FileManipulatorThread::remove(const QFileInfoList &files, const bool doUpdates) {
-    bool res = true;
-    for (QFileInfoList::const_iterator it = files.begin(); it != files.end(); ++it) {
-        if (!remove(*it, doUpdates)) res = false;
-        PAUSE();
-        if (abort) break;
-    }
-    return res;
-}
-
-
-bool FileManipulatorThread::remove(const QFileInfo &file, const bool doUpdates) {
-    std::cout << "DELETING " << file.absoluteFilePath().toStdString() << std::endl;
-
-    QString path = file.absoluteFilePath();
-
-    if (removeExcludeFiles.contains(path)) {
-        if (doUpdates) updateProgress(1);
-        return false;
-    }
-
-    QFSFileEngine engine(path);
-
-    if (doUpdates) updateFile(path);
-
-    if (file.isDir()) {
-        if (!remove(listDirFiles(path), doUpdates)) {
-            if (doUpdates) updateProgress(1);
-            return false;
-        }
-
-        if (!listDirFiles(path).size()) {
-            ERROR_PROMPT(!engine.rmdir(path, false), tr("Error deleting directory %1."), path)
-        }
-    } else {
-        ERROR_PROMPT(!engine.remove(), tr("Error deleting file %1."), path)
-    }
-
-    if (!abort && doUpdates) updateProgress(1);
-
-    PAUSE();
-    if (abort || response == FileOperator::IGNORE) return false;
-    return true;
-}
-
-
-void FileManipulatorThread::copy(const QFileInfo &file) {
-    std::cout << "COPYING " << file.absoluteFilePath().toStdString()
-        << " to " << dest.absolutePath().toStdString() << std::endl;
-
-    QString path(file.absoluteFilePath());
-    QFSFileEngine engine(path);
-    QFileInfo newFile(dest.absolutePath() + "/" + file.fileName());
-
-    updateFile(path);
-
-    // hack to prevent asking about the same file if we already asked in the rename(...) function
-    if (overwriteAll == FileOperator::DONT_ASK_ONCE) {
-        overwriteAll = FileOperator::NONE;
-    } else {
-        OVERWRITE_PROMPT(file, newFile)
-    }
-
-    QString newPath(newFile.absoluteFilePath());
-    QFSFileEngine newEngine(newPath);
-
-    PAUSE();
-    if (abort) return;
-
-    if (file.isDir()) {
-        // save the overwrite response, because the response variable will get ovewritten in remove(...)
-        FileOperator::Response overwriteResponse = response;
-
-        if (newFile.exists() && !newFile.isDir()) {
-            // overwriting a file, so check for KEEP and handle it
-            if (response == FileOperator::KEEP) {
-                updateProgress(fileSizeMap[path]);
-                removeExcludeFiles.insert(path);
-                return;
-            }
-
-            // if it should not be kept, remove it and return on failure
-            if(!remove(newPath)) {
-                updateProgress(fileSizeMap[path]);
-                return;
-            }
-            // create new info since we deleted the file - is it needed?
-            newFile = QFileInfo(newPath);
-        } else {
-            // overwriting a directory - response KEEP means to keep the files inside,
-            // SKIP_DIR means to skip the dir completely
-            if (response == FileOperator::SKIP_DIR) {
-                updateProgress(fileSizeMap[path]);
-                removeExcludeFiles.insert(path);
-                return;
-            }
-        }
-
-        if (!newFile.exists()) {
-            SPECIAL_COPY_ERROR_PROMPT(!engine.mkdir(newPath, false),
-                tr("Error creating directory %1."), newPath)
-        }
-
-        // we've done the job with the dir, so update progress and recurse into the dir
-        updateProgress(1);
-        
-        // change the dest for the recursion
-        QDir destBackup = dest;
-        dest = newPath;
-
-        // and set overwriteAll to the response we got a while ago
-        // because it applies to the files inside the dir
-        FileOperator::Response tmpResp = overwriteAll;
-        overwriteAll = overwriteResponse;
-
-        processFiles(listDirFiles(path));
-
-        overwriteAll = tmpResp;
-
-        ERROR_PROMPT(!newEngine.setPermissions(file.permissions()),
-            tr("Error setting permissions for directory %1."), newPath)
-
-        PAUSE();
-        if (abort) return;
-
-        dest = destBackup;
-    } else {
-        if (response == FileOperator::KEEP) {
-            updateProgress(fileSizeMap[path]);
-            removeExcludeFiles.insert(path);
-            return;
-        }
-
-        SPECIAL_COPY_ERROR_PROMPT(checkSequentialFile(engine), tr("Cannot copy file %1."), path)
-
-        if (newFile.exists() && newFile.isDir()) {
-            SPECIAL_COPY_ERROR_PROMPT(!remove(newPath),
-                tr("Cannot replace directory %1 due to previous errors."), newPath)
-        }
-
-        SPECIAL_COPY_ERROR_PROMPT(!engine.open(QIODevice::ReadOnly), tr("Error reading file %1."), path)
-
-        bool ignore = false, newFileWritten = false;
-        while (!abort && !ignore) {
-            engine.seek(0);
-            fileValue = 0;
-
-            ERROR_PROMPT(!newEngine.open(QIODevice::WriteOnly | QIODevice::Truncate),
-                tr("Error writing file %1."), newPath)
-
-            if (abort || response == FileOperator::IGNORE) {
-                if (response == FileOperator::IGNORE) {
-                    updateProgress(fileSizeMap[path]);
-                    removeExcludeFiles.insert(path);
-                    ignore = true;
-                }
-                break;
-            }
-
-            newFileWritten = true;
-
-            bool error = false;
-            char block[BLOCK_SIZE];
-            qint64 bytes;
-            while ((bytes = engine.read(block, sizeof(block))) > 0) {
-                if (bytes == -1 || bytes != newEngine.write(block, bytes)) {
-                    if (bytes == -1) {
-                        SHOW_ERROR_PROMPT(tr("Error while reading from file %1."), path);
-                    } else {
-                        SHOW_ERROR_PROMPT(tr("Error while writing to file %1."), newPath);
-                    }
-
-                    if (!abort) {
-                        if (response == FileOperator::IGNORE) {
-                            updateProgress(fileSizeMap[path] - fileValue);
-                            removeExcludeFiles.insert(path);
-                            ignore = true;
-                        } else {
-                            updateProgress(-fileValue);
-                        }
-                    }
-                    error = true;
-                    break;
-                }
-
-                PAUSE();
-                if (abort) break;
-
-                updateProgress(1);
-            }
-
-            if (!error) break;
-            PAUSE();
-        }
-
-        engine.close();
-        newEngine.close();
-
-        PAUSE();
-        if (abort || ignore) {
-            if (newFileWritten) {
-                newEngine.remove();
-            }
-        } else {
-            ERROR_PROMPT(!newEngine.setPermissions(file.permissions()),
-                tr("Error setting permissions for file %1."), newPath)
-        }
-    }
-}
-
-
-unsigned int FileManipulatorThread::calculateFileSize(const QFileInfoList &files,
-    const bool count,
-    const bool addSize)
-{
-    unsigned int res = 0;
-
-    for (QFileInfoList::const_iterator it = files.begin(); it != files.end(); ++it) {
-        unsigned int size = 0;
-
-        PAUSE();
-        if (abort) break;
-
-        if (it->isDir()) {
-            size += calculateFileSize(listDirFiles(it->absoluteFilePath()), count, addSize);
-        }
-
-        if (addSize) {
-            if (it->isDir()) {
-                ++size;
-            } else {
-                size += ceil(static_cast<float>(it->size()) / BLOCK_SIZE);
-            }
-            fileSizeMap[it->absoluteFilePath()] = size;
-        }
-
-        if (count) {
-            ++size;
-        }
-
-        res += size;
+        op->abort = true;
+        op->pause = false;
+        op->wake();
     }
-
-    return res;
-}
-
-
-QFileInfoList FileManipulatorThread::listDirFiles(const QString &dirPath) {
-    QDir dir = dirPath;
-    return dir.entryInfoList(QDir::NoDotAndDotDot | QDir::AllEntries | QDir::System | QDir::Hidden);
 }
 
 
-void FileManipulatorThread::setBarSize(unsigned int size) {
-    barSize = size;
-    emit setBarSize(this, size);
-}
+void FileOperator::initOperation(OperationThread *thread, ProgressBar *bar) {
+    opList.append(qMakePair(thread, bar));
 
+    connect(thread, SIGNAL(showErrorPrompt(OperationThread*, const QString&, const QString&, const int)),
+        this, SLOT(showErrorPrompt(OperationThread*, const QString&, const QString&, const int)));
+    connect(thread, SIGNAL(showOverwritePrompt(OperationThread*, const QString&, bool)),
+        this, SLOT(showOverwritePrompt(OperationThread*, const QString&, bool)));
+    connect(thread, SIGNAL(showInputFilenamePrompt(OperationThread*, const QFileInfo&, bool)),
+        this, SLOT(showInputFilenamePrompt(OperationThread*, const QFileInfo&, bool)));
+    connect(thread, SIGNAL(finished(OperationThread*)),
+        this, SLOT(remove(OperationThread*)));
 
-void FileManipulatorThread::updateProgress(int value) {
-    barValue += value;
-    fileValue += value;
-    emit updateProgress(this, value);
-}
-
-
-void FileManipulatorThread::updateFile(const QString &name) {
-    fileValue = 0;
-    emit updateFileName(this, FileOperator::shortenPath(name));
-}
+    connect(thread, SIGNAL(totalSizeChanged(int)), bar, SLOT(setMaximum(int)));
+    connect(thread, SIGNAL(progressUpdate(int)), bar, SLOT(updateProgress(int)));
+    connect(thread, SIGNAL(fileNameUpdated(QString)), bar, SLOT(updateMainText(QString)));
+    connect(thread, SIGNAL(operationStarted(time_t)), bar, SLOT(setStartTime(time_t)));
+    connect(thread, SIGNAL(operationPaused()), bar, SLOT(pause()));
+    connect(thread, SIGNAL(operationResumed(time_t)), bar, SLOT(resume(time_t)));
+    connect(thread, SIGNAL(removeAfterCopy()), bar, SLOT(showRemoveNotice()));
 
+    connect(bar, SIGNAL(togglePauseOperation(ProgressBar*)), this, SLOT(togglePauseOperation(ProgressBar*)));
+    connect(bar, SIGNAL(abortOperation(ProgressBar*)), this, SLOT(abortOperation(ProgressBar*)));
 
-void FileManipulatorThread::waitOnCond() {
-    waitTime = time(0);
-    waitCond.wait(&mutex);
-}
-
-
-bool FileManipulatorThread::checkSequentialFile(const QFSFileEngine &engine) {
-    errno = 0;
-    if (engine.isSequential()) {
-        if (!errno) errno = 255;
-        return true;
-    }
-
-    return false;
-}
-
-
-void FileManipulatorThread::wake() {
-    startTime += time(0) - waitTime;
-    waitCond.wakeAll();
+    layout()->addWidget(bar);
+    thread->start(QThread::LowestPriority);
 }
 
 
-void FileManipulatorThread::setText(int value) {
-    if (progressBar->value() + value > progressBar->maximum()) {
-        std::cout << "WARNING: exceeding progressbar maximum (" << progressBar->maximum()
-            << ") by " << value << std::endl;
-    }
-
-    time_t now = time(0);
-    if (lastTimeUpdate < now) {
-        lastTimeUpdate = now;
-
-        time_t elapsed = now - startTime;
-        time_t remaining = (time_t) ((float) elapsed / barValue * (barSize - barValue));
-        struct tm *ts = gmtime(&remaining);
-        
-        if (remaining < 60) {
-            strftime(timeBuf, sizeof(timeBuf), "%Ss", ts);
-        } else if (remaining < 3600) {
-            strftime(timeBuf, sizeof(timeBuf), "%M:%S", ts);
-        } else {
-            strftime(timeBuf, sizeof(timeBuf), "%H:%M:%S", ts);
-        }
+ProgressBar *FileOperator::get(OperationThread *op) const {
+    for (OperationList::const_iterator it = opList.begin(); it != opList.end(); ++it) {
+        if (it->first == op) return it->second;
     }
-
-
-    progressBar->setFormat(QString("%p%  ") + timeBuf);
-    progressBar->setValue(progressBar->value() + value);
-}
-
-
-DeleteThread::DeleteThread(const QFileInfoList &files) : FileManipulatorThread(files) {
-    barText = tr("deleting %1");
-}
-
-
-void DeleteThread::run() {
-    mutex.lock();
-
-    setBarSize(calculateFileSize(files, true));
-    startTime = time(0);
-
-    processFiles(files);
-
-    sleep(0.5);
-    emit finished(this);
-}
-
-
-void DeleteThread::perform(const QFileInfo &file) {
-    remove(file, true);
-}
-
-
-CopyThread::CopyThread(const QFileInfoList &files, QDir &dest) : FileManipulatorThread(files, dest) {
-    barText = tr("copying %1");
-}
-
-
-void CopyThread::run() {
-    mutex.lock();
-
-    setBarSize(calculateFileSize(files, false, true));
-    startTime = time(0);
-
-    processFiles(files);
-
-    sleep(0.5);
-    emit finished(this);
-}
-
-
-void CopyThread::perform(const QFileInfo &file) {
-    copy(file);
-}
-
-
-MoveThread::MoveThread(const QFileInfoList &files, QDir &dest) : FileManipulatorThread(files, dest) {
-    barText = tr("moving %1");
+    return 0;
 }
 
 
-void MoveThread::run() {
-    mutex.lock();
-
-    rename(files, dest);
-
-    sleep(0.5);
-    emit finished(this);
-}
-
-
-void MoveThread::rename(const QFileInfoList &files, const QDir &dest) {
-    setBarSize(barSize + files.size());
-    startTime = time(0);
-
-    for (int i = 0; i < files.size(); ++i) {
-        QString path = files[i].absoluteFilePath();
-        QFSFileEngine engine(path);
-        QFileInfo newFile(dest.absolutePath() + "/" + files[i].fileName());
-
-        updateFile(path);
-
-        OVERWRITE_PROMPT(files[i], newFile)
-
-        // if we are owerwriting dir over a dir, we will get SKIP_DIR
-        // as a response from OVERWRITE_PROMT meaning we should skip it
-        // (KEEP would mean to keep the files inside)
-        if (files[i].isDir() && newFile.exists() && newFile.isDir()) {
-            if (response == FileOperator::SKIP_DIR) {
-                PAUSE();
-                if (abort) break;
-                updateProgress(1);
-                removeExcludeFiles.insert(path);
-                continue;
-            }
-        } else {
-            if (response == FileOperator::KEEP) {
-                PAUSE();
-                if (abort) break;
-                updateProgress(1);
-                removeExcludeFiles.insert(path);
-                continue;
-            }
-        }
-
-        QString newPath(newFile.absoluteFilePath());
-        QFSFileEngine newEngine(newPath);
-
-        bool done = false;
-
-        while (!abort && !engine.rename(newPath)) {
-            // source and target are on different partitions
-            // this should happen on the first file, unless some are skipped by overwrite prompt
-            // we calculate the actual file sizes, because from now on copy & remove takes over
-            if (errno == EXDEV) {
-                overwriteAll = response;
-                // hack: we already checked the first file we are sending to processFiles(...)
-                // so we don't want to ask about this one again
-                if (overwriteAll == FileOperator::NONE) overwriteAll = FileOperator::DONT_ASK_ONCE;
-
-                QFileInfoList remainingFiles = files.mid(i);
-
-                setBarSize(barValue + calculateFileSize(remainingFiles, true, true));
-
-                processFiles(remainingFiles);
-
-                barText = tr("deleting %1");
-
-                remove(remainingFiles, true);
-
-                done = true;
-                break;
-            // the target is nonempty dir. lets call this recursively and rename the contents one by one
-            } else if (errno == ENOTEMPTY || errno == EEXIST) {
-                FileOperator::Response tmpResp = overwriteAll;
-                overwriteAll = response;
-
-                rename(listDirFiles(path), QDir(newPath));
-                PAUSE();
-                if (abort) break;
-
-                overwriteAll = tmpResp;
-
-                remove(files[i]);
-
-                break;
-            // source and target are nonmatching types(file and dir)
-            // remove the target and let it loop once again
-            } else if (errno == ENOTDIR || errno == EISDIR) {
-                if (!remove(newPath)) break;
-            } else {
-                SHOW_ERROR_PROMPT(tr("Error moving %1."), path)
-
-                if (response == FileOperator::IGNORE) {
-                    break;
-                }
-            }
-            PAUSE();
-        }
-
-        if (done) break;
-
-        PAUSE();
-        if (abort) break;
-        updateProgress(1);
+OperationThread *FileOperator::get(ProgressBar *bar) const {
+    for (OperationList::const_iterator it = opList.begin(); it != opList.end(); ++it) {
+        if (it->second == bar) return it->first;
     }
-}
-
-
-void MoveThread::perform(const QFileInfo &file) {
-    copy(file);
+    return 0;
 }