cxMultiFileInputWidget.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.
                 
Copyright (c) SINTEF Department of Medical Technology.
All rights reserved.
                 
CustusX is released under a BSD 3-Clause license.
                 
See Lisence.txt (https://github.com/SINTEFMedtek/CustusX/blob/master/License.txt) for details.
=========================================================================*/
#include "cxMultiFileInputWidget.h"

#include <QtWidgets>

#include <iostream>

namespace cx
{


MultiFileInputWidget::MultiFileInputWidget(QWidget* parent) : QWidget(parent)
{
        mBasePath = "~";
        mUseRelativePath = false;
        mDescription = NULL;
        mBrowseButton = NULL;
        mFilenameEdit = NULL;

        mLayout = new QGridLayout(this);
        mLayout->setMargin(0);

        mFilenameEdit = new QTextEdit(this);
        mFilenameEdit->setToolTip("File names");
//      connect(mFilenameEdit, SIGNAL(editingFinished()), this, SIGNAL(fileChanged()));
//      connect(mFilenameEdit, SIGNAL(textChanged(const QString&)), this, SLOT(updateColor()));
        connect(mFilenameEdit, SIGNAL(textChanged()), this, SLOT(evaluateTextChanges()));
        mLayout->addWidget(mFilenameEdit, 0, 1);

        mBrowseAction = new QAction(QIcon(":/icons/open.png"), "Browse", this);
        mBrowseAction->setStatusTip("Browse the file system");
        connect(mBrowseAction, SIGNAL(triggered()), this, SLOT(browse()));

        mBrowseButton = new QToolButton();
        mBrowseButton->setDefaultAction(mBrowseAction);
        mLayout->addWidget(mBrowseButton, 0, 2);
}

void MultiFileInputWidget::setDescription(QString text)
{
        if (!mDescription)
        {
                mDescription = new QLabel(this);
                mLayout->addWidget(mDescription, 0,0);
        }

        mDescription->setText(text);
}

void MultiFileInputWidget::setFilenames(QStringList text)
{
        QStringList files = this->convertToAbsoluteFilenames(text);
        QStringList original = this->getAbsoluteFilenames();
//      QStringList original = this->convertToAbsoluteFilenames(mFilenameEdit->text().split('\n'));
        if (files==original)
                return;

        QString output = this->convertFilenamesToTextEditText(files);
        mFilenameEdit->setText(output);

//      if (mUseRelativePath)
//              text = QDir(mBasePath).relativeFilePath(text);
//
//      if (text==mFilenameEdit->text())
//              return;
//      mFilenameEdit->setText(text);
        this->widgetHasBeenChanged();
}

QStringList MultiFileInputWidget::convertToAbsoluteFilenames(QStringList text) const
{
        QStringList retval;
        for (unsigned i=0; i<text.size(); ++i)
                retval << this->convertToAbsoluteFilename(text[i]);
        return retval;
}
QString MultiFileInputWidget::convertToAbsoluteFilename(QString text) const
{
        if (text.isEmpty())
                return text;
        QString absolute = QDir(mBasePath).absoluteFilePath(text.trimmed());
        QString cleaned = QDir().cleanPath(absolute);
        if (!QFileInfo(cleaned).exists())
                return text; // return nonexistent files unchanged.
        return cleaned;
}
QString MultiFileInputWidget::convertFilenamesToTextEditText(QStringList files) const
{
        QStringList retval;
        for (unsigned i=0; i<files.size(); ++i)
        {
                retval << this->convertToPresentableFilename(files[i]);
        }
        return retval.join("\n");
}

QString MultiFileInputWidget::convertToPresentableFilename(QString absoluteFilename) const
{
        QString retval = absoluteFilename;
        if (!QFileInfo(absoluteFilename).exists())
                return retval;

        if (mUseRelativePath)
        {
                retval = QDir(mBasePath).relativeFilePath(absoluteFilename);
                if (retval.isEmpty())
                        retval = "./"; // in order to separate from empty string (which appears during editing and should be ignored)
        }


        return retval;
}

void MultiFileInputWidget::widgetHasBeenChanged()
{
        this->updateHelpInternal();
        this->updateColor();
        emit fileChanged();
}

void MultiFileInputWidget::setHelp(QString text)
{
        mBaseHelp = text;
        this->updateHelpInternal();
}

void MultiFileInputWidget::updateHelpInternal()
{
        QString files = this->getAbsoluteFilenames().join("\n");
        QString text = QString("%1\n\n%2").arg(mBaseHelp).arg(files);
        mFilenameEdit->setToolTip(text);
        mFilenameEdit->setStatusTip(text);
}

void MultiFileInputWidget::setBrowseHelp(QString text)
{
        mBrowseAction->setToolTip(text);
        mBrowseAction->setStatusTip(text);
}

void MultiFileInputWidget::setBasePath(QString path)
{
        mBasePath = path;
        this->widgetHasBeenChanged();
}

void MultiFileInputWidget::browse()
{
        QString text = "Select file";
        if (mUseRelativePath)
                text = QString("Select file relative to %1").arg(mBasePath);

        QString filename = QFileDialog::getExistingDirectory(this, text, mBasePath);
        if (filename.isEmpty())
                return;
//      QString filename = QFileDialog::getOpenFileName(this, text, mBasePath);
//      if (filename.isEmpty())
//              return;

//      if (mUseRelativePath)
//              filename = QDir(mBasePath).relativeFilePath(filename);

        QStringList files = this->getAbsoluteFilenames();
        files << filename;
        this->setFilenames(files);
}

QStringList MultiFileInputWidget::getFilenames() const
{
        return mFilenameEdit->toPlainText().split('\n');
}

QStringList MultiFileInputWidget::getAbsoluteFilenames() const
{
        return this->convertToAbsoluteFilenames(mFilenameEdit->toPlainText().split("\n"));
//      QString absolute = QDir(mBasePath).absoluteFilePath(this->getFilename().trimmed());
//      QString cleaned = QDir().cleanPath(absolute);
//      return cleaned;
}

void MultiFileInputWidget::setUseRelativePath(bool on)
{
        mUseRelativePath = on;
        this->widgetHasBeenChanged();
}

void MultiFileInputWidget::evaluateTextChanges()
{
        this->updateHelpInternal();
        this->updateColor();
        QStringList current = this->getAbsoluteFilenames();
        if (current!=mLastFilenames)
        {
                mLastFilenames = current;
                emit fileChanged();
        }
}

void MultiFileInputWidget::updateColor()
{
        mFilenameEdit->blockSignals(true);
        QTextCursor cursor = mFilenameEdit->textCursor();
        int pos = cursor.position();

        QStringList org = mFilenameEdit->toPlainText().split("\n");
        mFilenameEdit->setPlainText("");
        for (int i=0; i<org.size(); ++i)
        {
                bool exists = QFileInfo(this->convertToAbsoluteFilename(org[i])).exists();

                if (exists)
                        mFilenameEdit->setTextColor(QColor("black"));
                else
                        mFilenameEdit->setTextColor(QColor("red"));
                if (i!=0)
                        mFilenameEdit->textCursor().insertText("\n");
                mFilenameEdit->textCursor().insertText(org[i]);
        }

        cursor.setPosition(pos);

//      QTextBlockFormat red;
//      red.setProperty(QTextFormat::ForegroundBrush, QBrush(QColor("red")));
//      cursor.mergeBlockFormat(red);
        mFilenameEdit->setTextCursor(cursor);
        mFilenameEdit->blockSignals(false);

//      QColor color = QColor("black");
//      if (!QFileInfo(this->getAbsoluteFilename()).exists())
//              color = QColor("red");
//
//      QPalette p = mFilenameEdit->palette();
//      p.setColor(QPalette::Text, color);
//      mFilenameEdit->setPalette(p);
}

} /* namespace cx */