cxFilePreviewWidget.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 <cxFilePreviewWidget.h>
 
#include <QTextEdit>
#include <QLabel>
#include <QTextDocument>
#include <QPushButton>
#include <QTextStream>
//#include <QFileInfo>
#include <QFile>
#include <iostream>
#include "cxTypeConversions.h"
#include <QFileSystemWatcher>
#include "cxLogger.h"
#include "snwSyntaxHighlighter.h"
#include "cxFilePreviewProperty.h"
 
namespace cx
{
 
FilePreviewWidget::FilePreviewWidget(QWidget* parent, FilePreviewPropertyPtr dataInterface, QGridLayout *gridLayout, int row) :
        FileWatcherWidget(parent, "file_preview_widget", "File Preview"),
        mTextDocument(new QTextDocument(this)),
        mTextEdit(new QTextEdit(this)),
        mSaveButton(new QPushButton("Save", this))
{
        mData = dataInterface;
        if(mData) //Allow widget to be used like before without a dataInterface
        {
                //connect(mData.get(), SIGNAL(changed()), this, SLOT(setModified()));
                connect(mData.get(), &Property::changed, this, &FilePreviewWidget::fileinterfaceChanged);
        }
 
        this->setToolTip("Preview and edit a file");
        mSyntaxHighlighter = NULL;
        connect(mSaveButton, SIGNAL(clicked()), this, SLOT(saveSlot()));
        mSaveButton->setEnabled(false);
 
        connect(mTextEdit, SIGNAL(textChanged()), this, SLOT(textChangedSlot()));
        mTextEdit->setDocument(mTextDocument);
        mTextEdit->setLineWrapMode(QTextEdit::NoWrap);
 
        this->setSyntaxHighLighter<snw::SyntaxHighlighter>();
 
        this->createAndAddEditorLayout(gridLayout, row);
 
        //this->setModified();//Needed?
        this->fileinterfaceChanged();
}
 
void FilePreviewWidget::createAndAddEditorLayout(QGridLayout *gridLayout, int row)
{
        QHBoxLayout* buttonLayout = new QHBoxLayout();
        buttonLayout->addStretch();
        buttonLayout->setMargin(0);
        buttonLayout->addWidget(mSaveButton);
 
        QVBoxLayout* layout;
        if (gridLayout)
                layout = new QVBoxLayout();
        else
                layout = new QVBoxLayout(this);
 
        layout->setMargin(0);
        layout->addWidget(mTextEdit);
        layout->addLayout(buttonLayout);
 
        if (gridLayout) // add to input gridlayout
                gridLayout->addLayout(layout, row, 0);
}
 
FilePreviewWidget::~FilePreviewWidget()
{}
 
void FilePreviewWidget::textChangedSlot()
{
        mSaveButton->setEnabled(mTextDocument->isModified());
}
 
void FilePreviewWidget::fileinterfaceChanged()
{
        if(mData)
                this->previewFileSlot(mData->getEmbeddedPath().getAbsoluteFilepath());
}
void FilePreviewWidget::previewFileSlot(const QString& absoluteFilePath)
{
        mSaveButton->setEnabled(false);
 
        if(!this->internalOpenNewFile(absoluteFilePath))
                return;
 
        QTextStream stream(mCurrentFile.get());
        QString text = stream.readAll();
        mCurrentFile->close();
 
        mTextDocument->setPlainText(text);
        mTextDocument->setModified(false);
 
        this->textChangedSlot();
}
 
void FilePreviewWidget::saveSlot()
{
        if(!mCurrentFile)
                return;
 
        if(!mCurrentFile->open(QIODevice::WriteOnly | QIODevice::Truncate))
        {
                reportWarning("Could not open file "+mCurrentFile->fileName());
                return;
        }
 
        mCurrentFile->write(mTextDocument->toPlainText().toLatin1());
        mCurrentFile->close();
 
        mTextDocument->setModified(false);
 
}
 
}//namespace cx