Method notifyViewChanged

ui/statusbar.cpp:184–221

void DebuggerStatusBarContainer::notifyViewChanged(ViewFrame* frame)
{
	// The "no active view" message widget is always located at index 0. If the
	// frame passed is nullptr, show it.
	if (!frame)
	{
		m_consoleStack->setCurrentIndex(0);
		m_currentFrame = nullptr;

		return;
	}

	// The notifyViewChanged event can fire multiple times for the same frame
	// even if there is no apparent change. Compare the new frame to the
	// current one before continuing to avoid unnecessary work.
	if (frame == m_currentFrame)
		return;
	m_currentFrame = frame;

	// Get the appropriate DebuggerConsole for this ViewFrame, or create a new one if it
	// doesn't yet exist. The default value for non-existent keys of pointer
	// types in Qt containers is nullptr, which allows this logic below to work.
	auto* currentConsole = m_consoleMap.value(frame);
	if (!currentConsole)
	{
		currentConsole = new DebuggerStatusBarWidget(this, frame, frame->getCurrentBinaryView());

		// DockWidgets related to a ViewFrame are automatically cleaned up as
		// part of the ViewFrame destructor. To ensure there is never a DebuggerConsole
		// for a non-existent ViewFrame, the cleanup must be configured manually.
		connect(frame, &QObject::destroyed, this, &DebuggerStatusBarContainer::freeDebuggerConsoleForView);

		m_consoleMap.insert(frame, currentConsole);
		m_consoleStack->addWidget(currentConsole);
	}

	m_consoleStack->setCurrentWidget(currentConsole);
}