Changes between Initial Version and Version 1 of Docs/Prog/Manual/ApplicationLibraries/lib825ev/Form/HideItem

Timestamp:

09/30/20 11:42:27 (5 years ago)

Author:

Don Wilson

Comment:

--

Docs/Prog/Manual/ApplicationLibraries/lib825ev/Form/HideItem

@@ +1 @@
+= !HideItem =
+
+{{{
+CFormItem* CForm::HideItem(const char* name, bool updateDisplay = true)
+}}}
+
+== Parameters ==
+
+* name  =  The button title or input prompt text
+* updateDisplay = (optional parameter, true if not included) true to update the display, false do not update the display
+
+== Return Value ==
+
+The !ShowItem function returns a pointer to the CFormItem found based on the provided name value; NULL is returned if no item is found with a matching name value.
+
+== Remarks ==
+
+ShowItem is a wrapper for EnableItem to simply code. It is equivalent to EnableItem(name, false, updateDisplay)
+
+== Example ==
+
+{{{
+void UpdateLocalRemoteForm(CForm *pForm)
+{
+        int mode = 0;
+        int type = 0;
+
+        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();
+        }
+
+        // Must do 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
+
+        if(mode == MODE_OFF)
+        {
+                pForm->HideItem(LANG(STR_LOCREM_COMMTYPE_PROMPT));
+                pForm->HideItem(LANG(STR_LOCREM_PORT_PROMPT));
+                pForm->HideItem(LANG(STR_LOCREM_IPADDR_PROMPT));
+                pForm->HideItem(LANG(STR_LOCREM_COMMPORT_PROMPT));
+        }
+        else
+        {
+                if(type == SERIAL)
+                {
+                        pForm->HideItem(LANG(STR_LOCREM_IPADDR_PROMPT));
+                        pForm->HideItem(LANG(STR_LOCREM_PORT_PROMPT));
+
+                        pForm->ShowItem(LANG(STR_LOCREM_COMMPORT_PROMPT));
+                }
+                else
+                {
+                        pForm->HideItem(LANG(STR_LOCREM_COMMPORT_PROMPT));
+
+                        if(mode == MODE_REMOTE || mode == MODE_REMOTE_SMA)
+                        {
+                                pForm->ShowItem(LANG(STR_LOCREM_IPADDR_PROMPT));
+                        }
+                        else
+                        {
+                                pForm->HideItem(LANG(STR_LOCREM_IPADDR_PROMPT));
+                        }
+                        pForm->ShowItem(LANG(STR_LOCREM_PORT_PROMPT));
+                }
+                pForm->ShowItem(LANG(STR_LOCREM_COMMTYPE_PROMPT));
+        }
+}
+
+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, Type, 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;
+}
+
+}}}
+
+
+=== See Also === 
+ 
+ * [wiki:ShowItem ShowItem]
+ * [wiki:EnableItem EnableItem]
+
+