Implement basic ui

Changes:

 - Clean up code to use Qt coding style
 - Add comments to some methods
 - Add debugtools to have debug_msg() and debug_err() macros
 - New Serializer class header to save / load data
 - MetadataDialog: check validity of metadata
 - MainWindow: initial code for `tool' buttons to edit the structogram
 - MainWindow: open / save dialog

7 files changed, 71 insertions, 6 deletions

diff --git a/include/debugtools.h b/include/debugtools.h
new file mode 100644
index 0000000..cd6940b
--- /dev/null
+++ b/include/debugtools.h
@@ -0,0 +1,27 @@
+#ifndef DEBUGTOOLS_H
+#define DEBUGTOOLS_H
+
+#ifdef QT_NO_DEBUG
+
+void debug_msg(...) {}
+void debug_err(...) {}
+
+#else
+#include <iostream>
+
+#define debug_msg(msg) \
+do { \
+    std::cout << "DEBUG [" \
+              << __FILE__ << " @ " << __LINE__ \
+              << "]: " << msg << std::endl; \
+} while (0)
+
+#define debug_err(msg) \
+do { \
+    std::cerr << "ERROR [" \
+              << __FILE__ << " @ " << __LINE__ \
+              << "]: " << msg << std::endl; \
+} while (0)
+
+#endif // QT_NO_DEBUG
+#endif // DEBUGTOOLS_H
diff --git a/include/diagram/branchstatement.h b/include/diagram/branchstatement.h
index 6c5e416..3d8c385 100644
--- a/include/diagram/branchstatement.h
+++ b/include/diagram/branchstatement.h
@@ -8,13 +8,15 @@
 
 namespace samb {
 
+/* Implementation for Statement::DECISION, Statement::SWITCH
+ */
 class BranchStatement : public Statement
 {
 public:
     BranchStatement(Type t, const QString &condition, pointer next);
 
     /* accessors */
-    const std::map<QString, pointer>& branches() const { return _branches; }
+    std::map<QString, pointer>& branches() { return _branches; }
     std::size_t branches_count() const { return _branchesCount; }
 
     inline const QString& condition() const { return text(); }
diff --git a/include/diagram/iteratorstatement.h b/include/diagram/iteratorstatement.h
index a8f6d59..e7fbba0 100644
--- a/include/diagram/iteratorstatement.h
+++ b/include/diagram/iteratorstatement.h
@@ -8,13 +8,15 @@
 
 namespace samb {
 
+/* Implementation for Statement::WHILE Statement::UNTIL
+ */
 class IteratorStatement : public Statement
 {
 public:
     IteratorStatement(Type t, const QString &condition, pointer next);
 
     /* accessors */
-    const Scope& inner() const { return _inner; }
+    Scope& inner() { return _inner; }
 
     inline const QString& condition() const { return text(); }
     inline void condition(const QString &condition) { return text(condition); }
diff --git a/include/diagram/structogram.h b/include/diagram/structogram.h
index 6b2e0db..cd501aa 100644
--- a/include/diagram/structogram.h
+++ b/include/diagram/structogram.h
@@ -7,15 +7,19 @@
 
 namespace samb {
 
+/* A structogram is a specific type of scope, that is the root scope.
+ * As a result it contains some metadata informations about the author,
+ * date of creation ecc.
+ */
 class Structogram : public Scope
 {
 public:
     Structogram(const QString &title, const QString &author);
-    ~Structogram();
+    virtual ~Structogram();
 
     /* accessors */
-    void title(const QString &title) { text(title); }
-    const QString& title() const { return text(); }
+    inline void title(const QString &title) { text(title); }
+    inline const QString& title() const { return text(); }
 
     void author(const QString &author) { _author = author; }
     const QString& author() const { return _author; }
diff --git a/include/io/serializer.h b/include/io/serializer.h
new file mode 100644
index 0000000..901d913
--- /dev/null
+++ b/include/io/serializer.h
@@ -0,0 +1,18 @@
+#ifndef SERIALIZER_H
+#define SERIALIZER_H
+
+#include "diagram/structogram.h"
+
+#include <QFileInfo>
+
+class Serializer
+{
+public:
+    explicit Serializer();
+    virtual ~Serializer();
+
+    bool write(const samb::Structogram &structogram, QFileInfo into);
+    bool load(samb::Structogram &structogram, QFileInfo from);
+};
+
+#endif // SERIALIZER_H
diff --git a/include/ui/mainwindow.h b/include/ui/mainwindow.h
index 0beb4a2..3061440 100644
--- a/include/ui/mainwindow.h
+++ b/include/ui/mainwindow.h
@@ -19,13 +19,19 @@ public:
 
 private slots:
     void on_newButton_clicked();
+    void on_openButton_clicked();
+    void on_saveButton_clicked();
+
+    void on_refreshButton_clicked();
     void on_metadataButton_clicked();
+    void on_newStatementButton_clicked();
 
 private:
     Ui::MainWindow *_ui;
     samb::Structogram *_structogram;
 
-    void initData();
+    bool askSaveDialog();
+    void toolButtonsEnabled(bool state);
 };
 
 #endif // MAINWINDOW_H
diff --git a/include/ui/metadatadialog.h b/include/ui/metadatadialog.h
index 0ed2f17..81af9da 100644
--- a/include/ui/metadatadialog.h
+++ b/include/ui/metadatadialog.h
@@ -2,6 +2,7 @@
 #define NEWDIALOG_H
 
 #include <QDialog>
+#include <QAbstractButton>
 
 namespace Ui {
 class MetadataDialog;
@@ -15,10 +16,15 @@ public:
     explicit MetadataDialog(QWidget *parent = 0);
     ~MetadataDialog();
 
+    bool isValid() const;
     void setMetadata(const QString& title, const QString& author);
     QString title() const;
     QString author() const;
 
+private slots:
+    void on_titleEdit_textChanged();
+    void on_authorEdit_textChanged();
+
 private:
     Ui::MetadataDialog *_ui;
 };