From ee4e0002025099edd716bbd5b5c4f21b467ac7ab Mon Sep 17 00:00:00 2001
From: Lukáš Lalinský <lalinsky@gmail.com>
Date: Mon, 20 Jul 2009 10:33:14 +0200
Subject: Open file passed on the command line

---
 src/diagramdocument.cpp | 10 ++++++++--
 src/diagramdocument.h   |  2 +-
 src/main.cpp            |  8 +++++++-
 src/mainwindow.cpp      | 20 +++++++++++++++-----
 src/mainwindow.h        |  2 +-
 5 files changed, 32 insertions(+), 10 deletions(-)

(limited to 'src')

diff --git a/src/diagramdocument.cpp b/src/diagramdocument.cpp
index a697bc7..a541d7a 100644
--- a/src/diagramdocument.cpp
+++ b/src/diagramdocument.cpp
@@ -432,15 +432,20 @@ DiagramDocument::save(const QString &fileName)
 
 #include "diagramitemfactory.h"
 
-void
+bool
 DiagramDocument::load(const QString &fileName)
 {
 	QDomDocument doc;
 	QFile file(fileName);
 	if (file.open(QIODevice::ReadOnly)) {
-		doc.setContent(&file);
+		if (!doc.setContent(&file)) {
+			return false;
+		}
 		file.close();
 	}
+	else {
+		return false;
+	}
 	setFileName(fileName);
 	QDomElement root = doc.firstChildElement("diagram");
 
@@ -460,6 +465,7 @@ DiagramDocument::load(const QString &fileName)
 		}
 		itemElement = itemElement.nextSiblingElement("item");
 	}
+	return true;
 }
 
 DiagramItem *
diff --git a/src/diagramdocument.h b/src/diagramdocument.h
index fa061b1..4a3fd34 100644
--- a/src/diagramdocument.h
+++ b/src/diagramdocument.h
@@ -72,7 +72,7 @@ public:
 	QList<DiagramItem *> selectedItems();
 
 	void save(const QString &fileName);
-	void load(const QString &fileName);
+	bool load(const QString &fileName);
 
 	QString fileName() { return m_fileName; }
 	void setFileName(const QString &fileName) { m_fileName = fileName; }
diff --git a/src/main.cpp b/src/main.cpp
index 628856c..a76a90c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -37,7 +37,13 @@ main(int argc, char **argv)
 	translator.load("dbmodel_" + QLocale::system().name(), ":/translations/");
 	app.installTranslator(&translator);
 
-	MainWindow window;
+	QString fileName;
+	QStringList args = app.arguments();
+	if (args.size() > 1) {
+		fileName = args.at(1);
+	}
+	
+	MainWindow window(fileName);
 	window.show();
 	return app.exec();
 }
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index eac5f02..7d26984 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -68,14 +68,19 @@ public:
     ExporterList exporters;
 };
 
-MainWindow::MainWindow()
+MainWindow::MainWindow(const QString &fileName)
 	: QMainWindow(), d(new MainWindowPrivate), m_model(NULL)
 {
 	setupUi();
 	setupActions();
 	setupToolBar();
 	setupMenuBar();
-	newModel();
+	if (fileName.isEmpty()) {
+		newModel();
+	}
+	else {
+		loadFile(fileName);
+	}
 
 	QIcon icon;
 	icon.addFile(":/icons/16x16/item-table.png", QSize(32, 32));
@@ -448,9 +453,14 @@ void
 MainWindow::loadFile(const QString &fileName)
 {
 	DiagramDocument *model = new DiagramDocument(this);
-	model->load(fileName);
-	newModel(model);
-	addRecentFile(fileName);
+	if (model->load(fileName)) {
+		newModel(model);
+		addRecentFile(fileName);
+	}
+	else {
+		QMessageBox::critical(this, tr("Error"), tr("Unknown format."));
+		newModel();
+	}
 }
 
 void
diff --git a/src/mainwindow.h b/src/mainwindow.h
index a1b7723..923f6cd 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -33,7 +33,7 @@ class MainWindow: public QMainWindow
 	Q_OBJECT
 
 public:
-	MainWindow();
+	MainWindow(const QString &fileName = QString());
 	~MainWindow();
 
 	QIcon loadIcon(const QString &name);
-- 
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