From 2105800b94edcae55c6e226d8dc3ec6e1c204ab2 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sun, 6 May 2018 12:02:19 +0200
Subject: Tabifying dock widgets

---
 src/mainwindow/mainwindow.cpp         | 29 +++++++++++++++++++++--------
 src/mainwindow/mainwindow.h           |  1 +
 src/mainwindow/widgets/dockwidget.cpp | 25 +++++++++++++++++++++++++
 src/mainwindow/widgets/dockwidget.h   | 23 +++++++++++++++++++++++
 4 files changed, 70 insertions(+), 8 deletions(-)
 create mode 100644 src/mainwindow/widgets/dockwidget.cpp
 create mode 100644 src/mainwindow/widgets/dockwidget.h

(limited to 'src/mainwindow')

diff --git a/src/mainwindow/mainwindow.cpp b/src/mainwindow/mainwindow.cpp
index eba02c6..5129abc 100644
--- a/src/mainwindow/mainwindow.cpp
+++ b/src/mainwindow/mainwindow.cpp
@@ -14,7 +14,7 @@
 #include "window.h"
 #include <QApplication>
 #include <QCloseEvent>
-#include <QDockWidget>
+#include "widgets/dockwidget.h"
 #include <QLineEdit>
 #include <QMdiArea>
 #include <QMdiSubWindow>
@@ -153,17 +153,30 @@ void MainWindow::addAction(ActionLocation where, QAction *action)
 
 void MainWindow::addDockWidget(Qt::DockWidgetArea area, QWidget *widget)
 {
-    QDockWidget *dock = new QDockWidget(widget->windowTitle(), this);
-    dock->setAttribute(Qt::WA_DeleteOnClose, true);
+    QList<QDockWidget *> docks;
+    for(QDockWidget *dock : findChildren<QDockWidget *>()) {
+        if(dockWidgetArea(dock) == area)
+            docks.append(dock);
+    }
+
+    DockWidget *dock = new DockWidget(widget->windowTitle(), this);
     dock->setWidget(widget);
 
-    connect(dock, &QDockWidget::visibilityChanged, [dock](bool visible) {
-        if(!visible && dock->widget()) {
+    if(docks.empty())
+        QMainWindow::addDockWidget(area, dock);
+    else
+        tabifyDockWidget(docks.last(), dock);
+}
+
+void MainWindow::removeDockWidget(QWidget *widget)
+{
+    const auto docks = this->findChildren<QDockWidget *>();
+    for(QDockWidget *dock : docks) {
+        if(dock->widget() == widget) {
             dock->widget()->setParent(nullptr);
+            dock->close();
         }
-    });
-
-    QMainWindow::addDockWidget(area, dock);
+    }
 }
 
 void MainWindow::createTab(const QUrl &url)
diff --git a/src/mainwindow/mainwindow.h b/src/mainwindow/mainwindow.h
index 2532189..8f511a3 100644
--- a/src/mainwindow/mainwindow.h
+++ b/src/mainwindow/mainwindow.h
@@ -40,6 +40,7 @@ public:
 
     void addAction(ActionLocation where, QAction *action);
     void addDockWidget(Qt::DockWidgetArea area, QWidget *widget);
+    void removeDockWidget(QWidget *widget);
 
     Window *currentSubWindow() const;
 
diff --git a/src/mainwindow/widgets/dockwidget.cpp b/src/mainwindow/widgets/dockwidget.cpp
new file mode 100644
index 0000000..f70e26f
--- /dev/null
+++ b/src/mainwindow/widgets/dockwidget.cpp
@@ -0,0 +1,25 @@
+/*
+ * This file is part of smolbote. It's copyrighted by the contributors recorded
+ * in the version control history of the file, available from its original
+ * location: https://neueland.iserlohn-fortress.net/smolbote.hg
+ *
+ * SPDX-License-Identifier: GPL-3.0
+ */
+
+#include "dockwidget.h"
+#include <QCloseEvent>
+
+DockWidget::DockWidget(const QString &title, QWidget *parent, Qt::WindowFlags flags)
+    : QDockWidget(title, parent, flags)
+{
+    setAttribute(Qt::WA_DeleteOnClose, true);
+}
+
+DockWidget::~DockWidget()
+{
+    // dock widget takes ownership of its widget, so closing the dock widget
+    // causes it to delete the widget as well
+    // clear the widget's parent to prevent this
+    if(widget())
+        widget()->setParent(nullptr);
+}
diff --git a/src/mainwindow/widgets/dockwidget.h b/src/mainwindow/widgets/dockwidget.h
new file mode 100644
index 0000000..35a4cc7
--- /dev/null
+++ b/src/mainwindow/widgets/dockwidget.h
@@ -0,0 +1,23 @@
+/*
+ * This file is part of smolbote. It's copyrighted by the contributors recorded
+ * in the version control history of the file, available from its original
+ * location: https://neueland.iserlohn-fortress.net/smolbote.hg
+ *
+ * SPDX-License-Identifier: GPL-3.0
+ */
+
+#ifndef SMOLBOTE_DOCKWIDGET_H
+#define SMOLBOTE_DOCKWIDGET_H
+
+#include <QDockWidget>
+
+
+class DockWidget : public QDockWidget
+{
+public:
+    DockWidget(const QString &title, QWidget *parent = nullptr, Qt::WindowFlags flags = Qt::WindowFlags());
+    ~DockWidget();
+
+};
+
+#endif // SMOLBOTE_DOCKWIDGET_H
-- 
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