CForm

C++ class the provides form features. Most applications may use the helper macros FORM_INIT, FORM_ADD_INPUT, FORM_ADD_BUTTON, FORM_SHOW, FORM_RUN, FORM_HIDE, and EVENT to prevent having to work with CForm items directly.

Methods

EnableItem

CFormItem* EnableItem(const char* pszName, bool enable, bool show)

Parameters

pszName = The button title or input prompt text enable = true to enable the item, false to disable show = true to update the display, false do not update the display

Remarks

Allows conditionally showing items on a form.

Example

void UpdateLocalRemoteForm(CForm *pForm)
{
	int mode = 0;
	int type = 0;
	vector<const char*> hideItems;
	vector<const char*> showItems;

	CFormInput *pMode = (CFormInput*)pForm->FindName(LANG(STR_LOCREM_MODE_PROMPT));
	if(pMode != NULL)
	{
		mode = pMode->GetSelItem();
	}
	CFormInput *pType = (CFormInput*)pForm->FindName(LANG(STR_LOCREM_COMMTYPE_PROMPT));
	if(pType != NULL)
	{
		type = pType->GetSelItem();
	}

	if(mode == MODE_OFF)
	{
		hideItems.push_back(LANG(STR_LOCREM_COMMTYPE_PROMPT));
		hideItems.push_back(LANG(STR_LOCREM_PORT_PROMPT));
		hideItems.push_back(LANG(STR_LOCREM_IPADDR_PROMPT));
		hideItems.push_back(LANG(STR_LOCREM_COMMPORT_PROMPT));
	}
	else
	{
		showItems.push_back(LANG(STR_LOCREM_COMMTYPE_PROMPT));
		if(type == SERIAL)
		{
			showItems.push_back(LANG(STR_LOCREM_COMMPORT_PROMPT));

			hideItems.push_back(LANG(STR_LOCREM_IPADDR_PROMPT));
			hideItems.push_back(LANG(STR_LOCREM_PORT_PROMPT));
		}
		else
		{
			hideItems.push_back(LANG(STR_LOCREM_COMMPORT_PROMPT));

			showItems.push_back(LANG(STR_LOCREM_PORT_PROMPT));
			if(mode == MODE_REMOTE)
			{
				showItems.push_back(LANG(STR_LOCREM_IPADDR_PROMPT));
			}
			else
			{
				hideItems.push_back(LANG(STR_LOCREM_IPADDR_PROMPT));
			}
		}
	}

	// Hide items first to allow for conditional items to be at the same place in the form
	// Otherwise we might show a condition item and then blank it out
	size_t n;
	for(n = 0; n < hideItems.size(); n++)
	{
		pForm->EnableItem(hideItems[n], false, true);
	}
	for(n = 0; n < showItems.size(); n++)
	{
		pForm->EnableItem(showItems[n], true, true);
	}
}

int CLocalRemote::Config(void)
{

	Shutdown();

	uint8 byMode = (uint8) GetMode();
	commType = (uint8) GetCommType();
	commPort = (uint8) GetCommPort();
	FORM_INIT(CfgLR, EventLocalRemoteShow, NULL, NULL, NULL, nFormFlgShowHelp);

	FORM_ADD_INPUT(CfgLR, Mode, FONT_WIDTH * 0, FONT_HEIGHT * 2, LANG(STR_LOCREM_MODE_PROMPT),     10, 0,     2, EventModeOrTypeChg, &byMode,    FORM_UINT8_SEL,                      LANG(STR_LOCREM_MODE_CHOICES),    LANG(STR_LOCREM_MODE_HELP));
	FORM_ADD_INPUT(CfgLR, Comm, FONT_WIDTH * 0, FONT_HEIGHT * 4, LANG(STR_LOCREM_COMMTYPE_PROMPT), 10, 0,     1, EventModeOrTypeChg, &commType,  FORM_UINT8_SEL | FORM_FLAG_DISABLE,  LANG(STR_LOCREM_TYPE_CHOICES),    LANG(STR_LOCREM_COMMTYPE_HELP));
	FORM_ADD_INPUT(CfgLR, ComP, FONT_WIDTH * 0, FONT_HEIGHT * 6, LANG(STR_LOCREM_COMMPORT_PROMPT), 10, 0,     1, NULL,               &commPort,  FORM_UINT8_SEL | FORM_FLAG_DISABLE,  LANG(STR_LOCREM_COMPORT_CHOICES), LANG(STR_LOCREM_COMPORT_HELP) );
	FORM_ADD_INPUT(CfgLR, Port, FONT_WIDTH * 0, FONT_HEIGHT * 6, LANG(STR_LOCREM_PORT_PROMPT),      6, 0, 65535, NULL,               &GetPort(), FORM_UINT32 | FORM_FLAG_DISABLE,     NULL,                             LANG(STR_LOCREM_PORT_HELP));
	FORM_ADD_INPUT(CfgLR, IP,   FONT_WIDTH * 0, FONT_HEIGHT * 8, LANG(STR_LOCREM_IPADDR_PROMPT) ,  18, 0,     0, NULL,               GetIP(),    FORM_STR | FORM_FLAG_DISABLE,        NULL,                             LANG(STR_LOCREM_IP_HELP));

	FORM_SHOW(CfgLR);

	UpdateLocalRemoteForm(&formCfgLR);

	int result = FORM_RUN(CfgLR);
	FORM_HIDE(CfgLR);

	if (result != FORM_RESULT_ESC)
	{
		SetMode((LocalRemoteMode) byMode);
		SetComType((LocalRemoteComm) commType);
		SetComPort((LocalRemotePort) commPort);

		appCfg.Write();
	}

	Startup();

	return result;
}

EVENT(ModeOrTypeChg)
{
	UpdateLocalRemoteForm(pForm);
	return 0;
}

EVENT(LocalRemoteShow)
{
	ClearLCD();
	SetCurColor(COLOR_ATTENTION);
	DisplayText(0, 0, LANG(STR_LOCREM_TITLE));

	return 0;
}