[Feature] Add "Recent Files" submenu

BUG: 409138
FIXED-IN: 19.08

src/cantor.cpp

@@ -27,6 +27,7 @@
 #include <KStandardAction>
 #include <KNS3/DownloadDialog>
 #include <KParts/ReadWritePart>
+#include <KRecentFilesAction>
 
 #include <QApplication>
 #include <QCloseEvent>
@@ -75,6 +76,12 @@ CantorShell::CantorShell() : KParts::MainWindow(), m_part(nullptr)
     updateNewSubmenu();
 }
 
+CantorShell::~CantorShell()
+{
+    if (m_recentProjectsAction)
+        m_recentProjectsAction->saveEntries(KSharedConfig::openConfig()->group(QLatin1String("Recent Files")));
+}
+
 void CantorShell::load(const QUrl &url)
 {
     if (!m_part||!m_part->url().isEmpty() || m_part->isModified() )
@@ -84,6 +91,8 @@ void CantorShell::load(const QUrl &url)
     }
     if (!m_part->openUrl( url ))
         closeTab(m_tabWidget->currentIndex());
+    if (m_recentProjectsAction)
+        m_recentProjectsAction->addUrl(url);
 }
 
 bool CantorShell::hasAvailableBackend()
@@ -104,6 +113,9 @@ void CantorShell::setupActions()
     openNew->setPriority(QAction::LowPriority);
     QAction* open = KStandardAction::open(this, SLOT(fileOpen()), actionCollection());
     open->setPriority(QAction::LowPriority);
+    m_recentProjectsAction = KStandardAction::openRecent(this, &CantorShell::load, actionCollection());
+    m_recentProjectsAction->setPriority(QAction::LowPriority);
+    m_recentProjectsAction->loadEntries(KSharedConfig::openConfig()->group(QLatin1String("Recent Files")));
 
     KStandardAction::close (this,  SLOT(closeTab()),  actionCollection());
 
@@ -299,6 +311,7 @@ void CantorShell::addWorksheet(const QString& backendName)
                 if (part)
                 {
                     connect(part, SIGNAL(setCaption(QString,QIcon)), this, SLOT(setTabCaption(QString,QIcon)));
+                    connect(part, SIGNAL(worksheetSave(QUrl)), this, SLOT(onWorksheetSave(QUrl)));
                     m_parts.append(part);
 
                     int tab = m_tabWidget->addTab(part->widget(), QIcon::fromTheme(backend->icon()), i18n("Session %1", sessionCount++));
@@ -667,3 +680,9 @@ void CantorShell::pluginVisibilityRequested()
         }
     }
 }
+
+void CantorShell::onWorksheetSave(const QUrl& url)
+{
+    if (m_recentProjectsAction)
+        m_recentProjectsAction->addUrl(url);
+}

src/cantor.h

@@ -28,6 +28,7 @@
 
 class QTabWidget;
 class KTextEdit;
+class KRecentFilesAction;
 
 namespace Cantor{
 class WorksheetAccessInterface;
@@ -53,12 +54,7 @@ public:
     /**
      * Default Destructor
      */
-    ~CantorShell() override = default;
-
-    /**
-     * Use this method to load whatever file/URL you have
-     */
-    void load(const QUrl& url);
+    ~CantorShell() override;
 
     /**
      * checks if at least one usable Backend is installed
@@ -82,10 +78,13 @@ protected:
 public Q_SLOTS:
     void addWorksheet();
     void addWorksheet(const QString& backendName);
+    /// Use this method/slot to load whatever file/URL you have
+    void load(const QUrl& url);
 
 private Q_SLOTS:
     void fileNew();
     void fileOpen();
+    void onWorksheetSave(const QUrl& url);
     void optionsConfigureKeys();
 
     void activateWorksheet(int index);
@@ -115,6 +114,7 @@ private:
     QTabWidget* m_tabWidget;
     QList<QDockWidget*> m_panels;
     QDockWidget* m_helpDocker;
+    KRecentFilesAction* m_recentProjectsAction;
 };
 
 #endif // CANTOR_H

src/cantor_part.cpp

@@ -450,6 +450,7 @@ bool CantorPart::saveFile()
         m_worksheet->save( localFilePath() );
     setModified(false);
 
+    emit worksheetSave(QUrl::fromLocalFile(localFilePath()));
     return true;
 }
 
@@ -480,7 +481,9 @@ void CantorPart::fileSaveAs()
     {
         if (!file_name.endsWith(QLatin1String(".cws")))
             file_name += QLatin1String(".cws");
-        saveAs(QUrl::fromLocalFile(file_name));
+        const QUrl& url = QUrl::fromLocalFile(file_name);
+        saveAs(url);
+        emit worksheetSave(url);
     }
     else
         m_worksheet->savePlain(file_name);

src/cantor_part.h

@@ -82,6 +82,7 @@ public:
 Q_SIGNALS:
     void setCaption(const QString& caption, const QIcon& icon);
     void showHelp(const QString& help);
+    void worksheetSave(const QUrl& url);
 
 protected:
     /**

src/cantor_shell.rc

 <!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
-<kpartgui name="cantor_shell" version="1">
+<kpartgui name="cantor_shell" version="2">
 <MenuBar>
   <Menu name="file"><text>&amp;File</text>
     <Action name="file_new"/>
@@ -7,6 +7,7 @@
         <ActionList name="new_worksheet_with_backend_list" />
     </Menu>
     <Action name="file_open"/>
+    <Action name="file_open_recent"/>
     <Action name="file_example_download"/>
     <Action name="file_example_open"/>
     <Separator/>