cppGUI/FileChooser.cpp at master · imgag/cppGUI · GitHub

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#include"FileChooser.h"
#include"Settings.h"
#include"GUIHelper.h"
#include<QFileDialog>
#include<QDragEnterEvent>
#include<QDropEvent>
#include<QMenu>
#include<QDesktopServices>
#include<QBoxLayout>
#include<QMimeData>

FileChooser::FileChooser(FileChooser::Type type, QWidget *parent)
	: QWidget(parent)
	, type_(type)
{
setAcceptDrops(true);

//create layout
	QBoxLayout* layout = newQBoxLayout(QBoxLayout::LeftToRight);
 layout->setContentsMargins(0, 0, 0, 0);
	layout->setSpacing(3);
setLayout(layout);

//add widgets
	text_ = newQLineEdit();
	layout->addWidget(text_);
	button_ = newQPushButton("browse");
	layout->addWidget(button_);

connect(button_, SIGNAL(clicked()), this, SLOT(browseFile()));
}

QString FileChooser::file()
{
return text_->text();
}

voidFileChooser::setFile(QString file)
{
	text_->setText(file);
}

voidFileChooser::browseFile()
{
	QString file = "";

if (type_==LOAD)
	{
 file = QFileDialog::getOpenFileName(this, "Select input file.", Settings::path("open_data_folder", true), "*.*");
if (file!="")
 {
Settings::setPath("open_data_folder", file);
 }
	}
else
	{
 file = QFileDialog::getSaveFileName(this, "Select output file.", Settings::path("store_data_folder", true), "*.*");
if (file!="")
 {
Settings::setPath("store_data_folder", file);
 }
	}

	text_->setText(file);
	text_->setToolTip(file);
}

voidFileChooser::dragEnterEvent(QDragEnterEvent* e)
{
if (e->mimeData()->hasFormat("text/uri-list") && e->mimeData()->urls().count()==1)
	{
 e->acceptProposedAction();
	}
}

voidFileChooser::dropEvent(QDropEvent* e)
{
	QString filename = e->mimeData()->urls().first().toLocalFile();

if (filename.isEmpty()) return;

	text_->setText(filename);
}

voidFileChooser::contextMenuEvent(QContextMenuEvent* e)
{
//create menu
	QMenu* menu = newQMenu();
	menu->addAction("Copy");
	menu->addAction("Paste");
	menu->addAction("Delete");
	menu->addSeparator();
if (text_->text()!="")
	{
 menu->addAction("Open");
	}

//execute
	QAction* selected = menu->exec(e->globalPos());

//evaluate
if (selected!=0)
	{
if(selected->text()=="Copy")
 {
 text_->selectAll();
 text_->copy();
 text_->deselect();
 }
elseif(selected->text()=="Paste")
 {
 QString previous = text_->text();

//paste
 text_->selectAll();
 text_->paste();
 text_->deselect();

//check file exists
if (!QFile::exists(text_->text()))
 {
GUIHelper::showMessage("Error", "File '" + text_->text() + "' does not exist!");
 text_->setText(previous);
 }
 }
elseif(selected->text()=="Delete")
 {
 text_->clear();
 }
elseif(selected->text()=="Open")
 {
QDesktopServices::openUrl("file:///" + text_->text());
 }
	}
}