Terminal: Register the command to open/close the Terminal pane

This way Alt+5 (Ctrl+5) would open / close the Terminal pane.

Change-Id: I91003987c1b8109abc302a79a895fab1557fefea
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/terminal/terminalcommands.cpp

@@ -153,4 +153,13 @@ QAction *TerminalCommands::openSettingsAction()
     return ActionManager::command("Preferences.Terminal.General")->action();
 }
 
+void TerminalCommands::registerOpenCloseTerminalPaneCommand()
+{
+    Command* terminalCmd = ActionManager::command("QtCreator.Pane.Terminal");
+    QTC_ASSERT(terminalCmd, return);
+
+    if (!m_commands.contains(terminalCmd))
+        m_commands.append(terminalCmd);
+}
+
 } // namespace Terminal

src/plugins/terminal/terminalcommands.h

@@ -51,6 +51,8 @@ public:
 
     static QAction *openSettingsAction();
 
+    void registerOpenCloseTerminalPaneCommand();
+
 protected:
     void initWidgetActions(const Core::Context &context);
     void initPaneActions(const Core::Context &context);

src/plugins/terminal/terminalpane.cpp

@@ -295,6 +295,8 @@ void TerminalPane::setFocus()
 {
     if (const auto t = currentTerminal())
         t->setFocus();
+
+    TerminalCommands::instance().registerOpenCloseTerminalPaneCommand();
 }
 
 bool TerminalPane::hasFocus() const