console: Add a Qt debug tab

Add a tab for Qt debug features. Initially provides access to dumpObjectTree() on
Application and MainWindow objects. This dumps the object's child objects to the
log.

src/ui/console.cpp

@@ -8,17 +8,24 @@
 
 #include "core/application.h"
 #include "core/database.h"
+#include "core/logging.h"
 
 Console::Console(Application* app, QWidget* parent)
     : QDialog(parent), app_(app) {
   ui_.setupUi(this);
   connect(ui_.database_run, SIGNAL(clicked()), SLOT(RunQuery()));
+  connect(ui_.qt_dump_button, SIGNAL(clicked()), SLOT(Dump()));
 
   QFont font("Monospace");
   font.setStyleHint(QFont::TypeWriter);
 
   ui_.database_output->setFont(font);
   ui_.database_query->setFont(font);
+
+  QList<QObject*> objs = GetTopLevelObjects();
+  for (QObject* obj : objs)
+    ui_.qt_dump_box->addItem(obj->objectName() + " object tree",
+                             obj->objectName());
 }
 
 void Console::RunQuery() {
@@ -45,3 +52,28 @@ void Console::RunQuery() {
   ui_.database_output->verticalScrollBar()->setValue(
       ui_.database_output->verticalScrollBar()->maximum());
 }
+
+void Console::Dump() {
+  QString item = ui_.qt_dump_box->currentData().toString();
+  QObject* obj = FindTopLevelObject(item);
+  if (obj == nullptr) {
+    qLog(Error) << "Object not found" << item;
+    return;
+  }
+  obj->dumpObjectTree();
+}
+
+QList<QObject*> Console::GetTopLevelObjects() {
+  QList<QObject*> objs;
+  objs << app_;
+  // The parent should be the main window.
+  if (parent() != nullptr) objs << parent();
+
+  return objs;
+}
+
+QObject* Console::FindTopLevelObject(QString& name) {
+  for (QObject* obj : GetTopLevelObjects())
+    if (obj->objectName() == name) return obj;
+  return nullptr;
+}

src/ui/console.h

@@ -13,9 +13,14 @@ class Console : public QDialog {
   Console(Application* app, QWidget* parent = nullptr);
 
  private slots:
+  // Database
   void RunQuery();
+  // Qt
+  void Dump();
 
  private:
+  QList<QObject*> GetTopLevelObjects();
+  QObject* FindTopLevelObject(QString& name);
   Ui::Console ui_;
   Application* app_;
 };

src/ui/console.ui

@@ -48,6 +48,51 @@
        </item>
       </layout>
      </widget>
+     <widget class="QWidget" name="qt_tab">
+      <attribute name="title">
+       <string>Qt</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="verticalLayout_2">
+       <item>
+        <widget class="QGroupBox" name="qt_dump_group">
+         <property name="title">
+          <string>Dump To Logs</string>
+         </property>
+         <layout class="QHBoxLayout" name="horizontalLayout">
+          <item>
+           <widget class="QComboBox" name="qt_dump_box"/>
+          </item>
+          <item>
+           <widget class="QPushButton" name="qt_dump_button">
+            <property name="maximumSize">
+             <size>
+              <width>100</width>
+              <height>16777215</height>
+             </size>
+            </property>
+            <property name="text">
+             <string>dump</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </widget>
     </widget>
    </item>
   </layout>