cxFileInputWidget.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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modification, are permitted provided that the following conditions are met:

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   this list of conditions and the following disclaimer.

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   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 
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=========================================================================*/

#include "cxFileInputWidget.h"
#include <QtWidgets>

#include "cxTypeConversions.h"
#include <iostream>

namespace cx
{

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

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

        mFilenameEdit = new QLineEdit(this);
        mFilenameEdit->setToolTip("File name");
        connect(mFilenameEdit, SIGNAL(editingFinished()), this, SIGNAL(fileChanged()));
        connect(mFilenameEdit, SIGNAL(textChanged(const QString&)), this, SLOT(updateColor()));
        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 FileInputWidget::setDescription(QString text)
{
        if (!mDescription)
        {
                mDescription = new QLabel(this);
                mLayout->addWidget(mDescription, 0,0);
        }

        mDescription->setText(text);
}

void FileInputWidget::setFilename(QString text)
{
        if (text==mFilenameEdit->text())
                return;
        mFilenameEdit->setText(text);
        this->widgetHasBeenChanged();
}

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

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

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

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

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

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

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

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

        this->setFilename(filename);
}

QString FileInputWidget::getFilename() const
{
        return mFilenameEdit->text();
}

QString FileInputWidget::getAbsoluteFilename() const
{
        QString absolute = QDir(mBasePath).absoluteFilePath(this->getFilename().trimmed());
        QString cleaned = QDir().cleanPath(absolute);
        return cleaned;
}

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

void FileInputWidget::updateColor()
{
        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