Add file menu with load/save etc.

1 files changed, 251 insertions, 16 deletions

diff --git a/src/mainwindow.cc b/src/mainwindow.cc
index bd52c0c..e2fe4b4 100644
--- a/src/mainwindow.cc
+++ b/src/mainwindow.cc
@@ -34,11 +34,15 @@
 #include <QToolBar>
 #include <QAction>
 #include <QFile>
+#include <QMenu>
+#include <QMenuBar>
+#include <QMessageBox>
+#include <QStatusBar>
+#include <QFileInfo>
+#include <QFileDialog>
 
 MainWindow::MainWindow(QString p)
 {
-	program = p;
-
 	// Watch file on disk?
 	//connect(&watcher, SIGNAL(fileChanged(const QString &)),
 	//        this, SLOT(reset()));
@@ -49,39 +53,270 @@ MainWindow::MainWindow(QString p)
 
 	editor = new CodeEditor();
 	splitter->addWidget(editor);
-	QFile file(program);
-	file.open(QIODevice::ReadOnly);
-	editor->setPlainText(file.readAll());
-	file.close();
+	connect(editor, SIGNAL(textChanged()), this, SLOT(programChanged()));
 
 	out = new OutputWindow();
 	splitter->addWidget(out);
 
-	l = new LUAScript(out, program);
+	l = new LUAScript(*out);
 	connect(l, SIGNAL(lineChanged(int)), editor, SLOT(runningLine(int)));
 
+	// Setup menu
+	QMenu* fileMenu = menuBar()->addMenu(tr("&File"));
+
+	{
+		QAction* act = new QAction(tr("&New File"), this);
+		fileMenu->addAction(act);
+		connect(act, SIGNAL(triggered()), this, SLOT(newFile()));
+	}
+
+	{
+		QAction* act = new QAction(tr("&Load File..."), this);
+		fileMenu->addAction(act);
+		connect(act, SIGNAL(triggered()), this, SLOT(loadFile()));
+	}
+
+	{
+		act_save = new QAction(tr("&Save File"), this);
+		fileMenu->addAction(act_save);
+		connect(act_save, SIGNAL(triggered()), this, SLOT(saveFile()));
+	}
+
+	{
+		QAction* act = new QAction(tr("Save File As..."), this);
+		fileMenu->addAction(act);
+		connect(act, SIGNAL(triggered()), this, SLOT(saveFileAs()));
+	}
+
+	{
+		QAction* act = new QAction(tr("&Quit"), this);
+		fileMenu->addAction(act);
+		connect(act, SIGNAL(triggered()), this, SLOT(close()));
+	}
+
+	// Setup toolbar
 	QToolBar *toolbar = new QToolBar();
 	addToolBar(Qt::TopToolBarArea, toolbar);
-	QAction *act_run = toolbar->addAction("Run");
-	connect(act_run, SIGNAL(triggered()), this, SLOT(reset()));
 
-	QAction *act_stop = toolbar->addAction("Stop");
-	connect(act_stop, SIGNAL(triggered()), l, SLOT(stopScript()));
+	{
+		QAction *act = toolbar->addAction("Start");
+		connect(act, SIGNAL(triggered()), this, SLOT(start()));
+	}
+
+	{
+		QAction *act = toolbar->addAction("Stop");
+		connect(act, SIGNAL(triggered()), this, SLOT(stop()));
+	}
+
+	{
+		QAction *act = toolbar->addAction("Reset");
+		connect(act, SIGNAL(triggered()), this, SLOT(reset()));
+	}
+
+	statusBar()->showMessage(tr("Ready"));
+	updateWindowTitle();
+
+	setWindowEnabled(false);
 
 	reset();
+
+	if(!p.isEmpty())
+	{
+		loadFile(p);
+	}
 }
 
-void MainWindow::reset()
+void MainWindow::closeEvent(QCloseEvent* event)
+{
+	if(!checkDirty())
+	{
+		event->ignore();
+		return;
+	}
+
+	event->accept();
+}
+
+bool MainWindow::checkDirty()
+{
+	if(dirty)
+	{
+		int ret =
+			QMessageBox::question(this, tr("Save before closing project?"),
+			                      tr("The file has changed. Do you want to save "
+			                         "before closing?"),
+			                      QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel);
+		switch(ret)
+		{
+		case QMessageBox::Yes:
+			saveFile();
+			if(dirty)
+			{
+				// Project still dirty - it was not saved (user pressed cancel?)
+				return false;
+			}
+			break;
+		case QMessageBox::No:
+			// Proceed to quit
+			break;
+		case QMessageBox::Cancel:
+			return false;
+		default:
+			break;
+		}
+	}
+
+	return true; // not dirty or user chose not to save
+}
+
+void MainWindow::setWindowEnabled(bool enabled)
+{
+	editor->setEnabled(enabled);
+}
+
+void MainWindow::updateWindowTitle()
+{
+	QString window_title_string;
+
+	if(program != "")
+	{
+		window_title_string += " (" + QFileInfo(program).fileName() + ")";
+	}
+
+	act_save->setEnabled(!program.isEmpty());
+
+	if(dirty)
+	{
+		window_title_string += "*";
+	}
+
+	setWindowTitle("Kaiman - " + window_title_string);
+}
+
+void MainWindow::newFile()
+{
+	if(!checkDirty())
+	{
+		return;
+	}
+
+	reset();
+
+	setWindowEnabled(true);
+}
+
+void MainWindow::loadFile()
+{
+	if(!checkDirty())
+	{
+		return;
+	}
+
+	QString filename =
+		QFileDialog::getOpenFileName(this,
+		                             tr("Load Kaiman File"),
+		                             "",
+		                             tr("Kaiman Files (*.lua)"));
+	if(filename == "")
+	{
+		// User clicked cancel
+		return;
+	}
+
+	loadFile(filename);
+}
+
+void MainWindow::loadFile(QString filename)
 {
-	printf("Resetting...\n");
+	QFile file(filename);
+	if(!file.open(QIODevice::ReadOnly))
+	{
+		return;
+	}
+	editor->setPlainText(file.readAll());
+	file.close();
+
+	l->setScriptFile(filename);
+
+	program = filename;
+
+	dirty = false;
+	updateWindowTitle();
+
+	statusBar()->showMessage(tr("Loaded"));
+	setWindowEnabled(true);
+}
+
+void MainWindow::saveFile()
+{
+	QString filename = program;
+	if(filename == "")
+	{
+		saveFileAs();
+		return;
+	}
+
 	QFile file(program);
-	file.open(QIODevice::WriteOnly);
+	if(!file.open(QIODevice::WriteOnly))
+	{
+		return;
+	}
 	QString code = editor->toPlainText();
 	file.write(code.toLocal8Bit());
 	file.close();
+
+	dirty = false;
+	updateWindowTitle();
+
+	statusBar()->showMessage(tr("Saved"));
+}
+
+void MainWindow::saveFileAs()
+{
+	QString filename
+		= QFileDialog::getSaveFileName(this, tr("Save Kaiman File"),
+		                               "",
+		                               tr("Kaiman Files (*.lua)"));
+
+	if(filename == "")
+	{
+		// User clicked cancel
+		return;
+	}
+
+	if(filename.right(4) != ".lua")
+	{
+		filename += ".lua";
+	}
+
+	program = filename;
+
+	saveFile();
+}
+
+void MainWindow::start()
+{
+	reset();
+
+	saveFile();
+
+	l->start();
+}
+
+void MainWindow::stop()
+{
 	out->stopScript();
 	l->stopScript();
+}
+
+void MainWindow::reset()
+{
+	stop();
 	out->reset();
-	l->start();
-	printf("Reset done\n");
+}
+
+void MainWindow::programChanged()
+{
+	dirty = true;
+	updateWindowTitle();
 }