GUI: Add most recently used projects to menu.

Add MRU items for project files to File-menu. When user creates
a new project file or opens existing project file it is added to
the list of recently used projects. Last 5 projects are remembered
and available for quick acess in the File-menu.

gui/common.h

@@ -84,6 +84,7 @@ ShowTypes;
 #define SETTINGS_GLOBAL_INCLUDE_PATHS   "Global include paths"
 #define SETTINGS_INLINE_SUPPRESSIONS    "Inline suppressions"
 #define SETTINGS_INCONCLUSIVE_ERRORS    "Inconclusive errors"
+#define SETTINGS_MRU_PROJECTS           "MRU Projects"
 
 /// @}
 #endif

gui/main.ui

@@ -66,7 +66,7 @@
      <x>0</x>
      <y>0</y>
      <width>640</width>
-     <height>28</height>
+     <height>25</height>
     </rect>
    </property>
    <widget class="QMenu" name="mMenuFile">
@@ -80,6 +80,7 @@
     <addaction name="mActionEditProjectFile"/>
     <addaction name="mActionCloseProjectFile"/>
     <addaction name="separator"/>
+    <addaction name="mActionProjectMRU"/>
     <addaction name="mActionSave"/>
     <addaction name="mActionQuit"/>
    </widget>
@@ -540,6 +541,14 @@
     <string>Filter results</string>
    </property>
   </action>
+  <action name="mActionProjectMRU">
+   <property name="text">
+    <string>Project MRU placeholder</string>
+   </property>
+   <property name="visible">
+    <bool>true</bool>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

gui/mainwindow.cpp

@@ -137,6 +137,16 @@ MainWindow::MainWindow() :
     {
         HandleCLIParams(args);
     }
+
+    for (int i = 0; i < MaxRecentProjects; ++i)
+    {
+        mRecentProjectActs[i] = new QAction(this);
+        mRecentProjectActs[i]->setVisible(false);
+        connect(mRecentProjectActs[i], SIGNAL(triggered()),
+                this, SLOT(OpenRecentProject()));
+    }
+    mUI.mActionProjectMRU->setVisible(false);
+    UpdateMRUMenuItems();
 }
 
 MainWindow::~MainWindow()
@@ -795,6 +805,7 @@ void MainWindow::LoadProjectFile(const QString &filePath)
     QFileInfo inf(filePath);
     const QString filename = inf.fileName();
     FormatAndSetTitle(tr("Project: ") + QString(" ") + filename);
+    AddProjectMRU(filePath);
 
     mUI.mActionCloseProjectFile->setEnabled(true);
     mUI.mActionEditProjectFile->setEnabled(true);
@@ -846,6 +857,7 @@ void MainWindow::NewProjectFile()
         mProject->Create();
         mProject->Edit();
     }
+    AddProjectMRU(filepath);
 }
 
 void MainWindow::CloseProjectFile()
@@ -931,3 +943,46 @@ void MainWindow::EnableProjectOpenActions(bool enable)
     mUI.mActionNewProjectFile->setEnabled(enable);
     mUI.mActionOpenProjectFile->setEnabled(enable);
 }
+
+void MainWindow::OpenRecentProject()
+{
+    QAction *action = qobject_cast<QAction *>(sender());
+    if (action)
+        LoadProjectFile(action->data().toString());
+}
+
+void MainWindow::UpdateMRUMenuItems()
+{
+    for (int i = 0; i < MaxRecentProjects; i++)
+    {
+        if (mRecentProjectActs[i] != NULL)
+            mUI.mMenuFile->removeAction(mRecentProjectActs[i]);
+    }
+
+    QStringList projects = mSettings->value(SETTINGS_MRU_PROJECTS).toStringList();
+    const int numRecentProjects = qMin(projects.size(), (int)MaxRecentProjects);
+    for (int i = 0; i < numRecentProjects; i++)
+    {
+        const QString filename = QFileInfo(projects[i]).fileName();
+        const QString text = QString("&%1 %2").arg(i + 1).arg(filename);
+        mRecentProjectActs[i]->setText(text);
+        mRecentProjectActs[i]->setData(projects[i]);
+        mRecentProjectActs[i]->setVisible(true);
+        mUI.mMenuFile->insertAction(mUI.mActionProjectMRU, mRecentProjectActs[i]);
+    }
+
+    if (numRecentProjects > 1)
+        mUI.mMenuFile->insertSeparator(mUI.mActionProjectMRU);
+}
+
+void MainWindow::AddProjectMRU(const QString &project)
+{
+    QStringList files = mSettings->value(SETTINGS_MRU_PROJECTS).toStringList();
+    files.removeAll(project);
+    files.prepend(project);
+    while (files.size() > MaxRecentProjects)
+        files.removeLast();
+
+    mSettings->setValue(SETTINGS_MRU_PROJECTS, files);
+    UpdateMRUMenuItems();
+}

gui/mainwindow.h

@@ -40,6 +40,7 @@ class HelpWindow;
 class Project;
 class ErrorItem;
 class StatsDialog;
+class QAction;
 
 /// @addtogroup GUI
 /// @{
@@ -52,6 +53,12 @@ class MainWindow : public QMainWindow
 {
     Q_OBJECT
 public:
+
+    /**
+    * @brief Maximum number of MRU project items in File-menu.
+    */
+    enum { MaxRecentProjects = 5 };
+
     MainWindow();
     virtual ~MainWindow();
 
@@ -268,6 +275,10 @@ protected slots:
     */
     void FilterResults();
 
+    /**
+    * @brief Opens recently opened project file.
+    */
+    void OpenRecentProject();
 
 protected:
 
@@ -384,6 +395,17 @@ protected:
     */
     void LoadProjectFile(const QString &filePath);
 
+    /**
+    * @brief Update project MRU items in File-menu.
+    */
+    void UpdateMRUMenuItems();
+
+    /**
+    * @brief Add project file (path) to the MRU list.
+    * @param project Full path to the project file to add.
+    */
+    void AddProjectMRU(const QString &project);
+
     /**
     * @brief Program settings
     *
@@ -448,6 +470,10 @@ private:
     */
     bool mExiting;
 
+    /**
+    * @brief Project MRU menu actions.
+    */
+    QAction *mRecentProjectActs[MaxRecentProjects];
 };
 /// @}
 #endif // MAINWINDOW_H