numericeditorform.cpp

一个基于SYMBIAN的editor程序

/**
* 
* @brief Definition of CNumericEditorForm
*
* Copyright (c) EMCC Software Ltd 2003
* @version 1.0
*/

// INCLUDE FILES

// Class include
#include "NumericEditorForm.h"

// System includes
#include <aknnotewrappers.h>	// CAknWarningNote
#include <aknnumed.h>			// TValidationStatus
#include <aknnumedwin.h>		// CAknIntegerEdwin
#include <AknPopupFieldText.h>	// CAknPopupFieldText
#include <aknslider.h>			// CAknSlider
#include <avkon.hrh>			// Commands
#include <avkon.rsg>			// R_AVKON_FORM_MENUPANE
#include <eikedwin.h>			// CEikEdwin
#include <eikfpne.h>			// CEikFloatingPointEditor
#include <eikmenup.h>			// CEikMenuPane
#include <NumericEditor.rsg>	// Resources
#include <stringloader.h>		// StringLoader

// CONSTANTS

// ================= MEMBER FUNCTIONS =======================

/**
* Symbian OS 2 phase constructor.
* Constructs the CNumericEditorForm using the NewLC method, popping
* the constructed object from the CleanupStack before returning it.
* 
* @return The newly constructed CNumericEditorForm
*/
CNumericEditorForm* CNumericEditorForm::NewL(TNumericEditorEmployee& aEmployee,
	TBool &aSaveState)
	{
	CNumericEditorForm* self = new (ELeave) CNumericEditorForm(aEmployee, aSaveState);
	CleanupStack::PushL(self);
	self->ConstructL();
	CleanupStack::Pop(self);
	return self;
	}

/**
* Called by the framework whenver the 'Save' menu item is selected, and by the QuerySaveChangesL 
* method when the user answers yes to the save query.
* Saves the data from the forms controls, into the iEmployee.
* @return TBool ETrue if the form data has been saved, EFalse otherwise
*/
TBool CNumericEditorForm::SaveFormDataL()
	{
	iSaveState = EFalse;
	CEikEdwin* nameEditor = static_cast<CEikEdwin*>(ControlOrNull(ENumericEditorDlgCIdEdwin));

	if (nameEditor)
		{
		HBufC* name = nameEditor->GetTextInHBufL();
		if (name)
			{
			iEmployee.SetName (*name);
			delete name;
			}
		}

	CAknIntegerEdwin* ageEditor = static_cast<CAknIntegerEdwin*>(ControlOrNull(ENumericEditorDlgCIdIntegerEdwin));

	if (ageEditor)
		{
		TInt age = 0;
		CAknNumericEdwin::TValidationStatus ageStatus = ageEditor->GetTextAsInteger(age);

		switch (ageStatus)
			{
			case CAknNumericEdwin::EValueValid:
				{
				iEmployee.SetAge(age);
				break;
				}
			case CAknNumericEdwin::EValueTooSmall:
				{
				CAknWarningNote* note = new (ELeave) CAknWarningNote();
				HBufC* text = StringLoader::LoadLC(R_NUMERICEDITOR_AGE_TOO_SMALL_TEXT, iCoeEnv);
				note->ExecuteLD(*text);
				CleanupStack::PopAndDestroy(text);
				return EFalse;
				break;
				}
			case CAknNumericEdwin::EValueTooLarge:
				{
				CAknWarningNote* note = new (ELeave) CAknWarningNote();
				HBufC* text = StringLoader::LoadLC(R_NUMERICEDITOR_AGE_TOO_LARGE_TEXT, iCoeEnv);
				note->ExecuteLD(*text);
				CleanupStack::PopAndDestroy(text);
				return EFalse;
				break;
				}
			case CAknNumericEdwin::EValueNotParsed:
				{
				CAknWarningNote* note = new (ELeave) CAknWarningNote();
				HBufC* text = StringLoader::LoadLC(R_NUMERICEDITOR_AGE_NOT_PARSED_TEXT, iCoeEnv);
				note->ExecuteLD(*text);
				CleanupStack::PopAndDestroy(text);
				return EFalse;
				break;
				}
			case CAknNumericEdwin::EEmpty:
				{
				CAknWarningNote* note = new (ELeave) CAknWarningNote();
				HBufC* text = StringLoader::LoadLC(R_NUMERICEDITOR_AGE_EMPTY_TEXT, iCoeEnv);
				note->ExecuteLD(*text);
				CleanupStack::PopAndDestroy(text);
				return EFalse;
				break;
				}
			default:
				return EFalse;
				break;
			}
		}
	
	CEikFixedPointEditor* salaryEditor = static_cast<CEikFixedPointEditor*>(ControlOrNull(ENumericEditorDlgCIdFxPtEd));

	if (salaryEditor)
		{
		TInt salary = 0;
		CAknNumericEdwin::TValidationStatus salaryStatus = salaryEditor->GetValueAsInteger(salary);

		switch (salaryStatus)
			{
			case CAknNumericEdwin::EValueValid:
				{
				iEmployee.SetSalary(salary);
				break;
				}
			case CAknNumericEdwin::EValueTooSmall:
				{
				CAknWarningNote* note = new (ELeave) CAknWarningNote();
				HBufC* text = StringLoader::LoadLC(R_NUMERICEDITOR_SALARY_TOO_SMALL_TEXT, iCoeEnv);
				note->ExecuteLD(*text);
				CleanupStack::PopAndDestroy(text);
				return EFalse;
				break;
				}
			case CAknNumericEdwin::EValueTooLarge:
				{
				CAknWarningNote* note = new (ELeave) CAknWarningNote();
				HBufC* text = StringLoader::LoadLC(R_NUMERICEDITOR_SALARY_TOO_LARGE_TEXT, iCoeEnv);
				note->ExecuteLD(*text);
				CleanupStack::PopAndDestroy(text);
				return EFalse;
				break;
				}
			case CAknNumericEdwin::EValueNotParsed:
				{
				CAknWarningNote* note = new (ELeave) CAknWarningNote();
				HBufC* text = StringLoader::LoadLC(R_NUMERICEDITOR_SALARY_NOT_PARSED_TEXT, iCoeEnv);
				note->ExecuteLD(*text);
				CleanupStack::PopAndDestroy(text);
				return EFalse;
				break;
				}
			case CAknNumericEdwin::EEmpty:
				{
				CAknWarningNote* note = new (ELeave) CAknWarningNote();
				HBufC* text = StringLoader::LoadLC(R_NUMERICEDITOR_SALARY_EMPTY_TEXT, iCoeEnv);
				note->ExecuteLD(*text);
				CleanupStack::PopAndDestroy(text);
				return EFalse;
				break;
				}
			default:
				return EFalse;
				break;
			}
		}
	iSaveState = ETrue;
	return ETrue;
	}



/**
* Sets the forms contols using the values contained in iEmployee. Called when the form is 
* executed and when the user chooses to discard changes in QuerySaveChangesL (via DoNotSaveFormDataL).
*/
void CNumericEditorForm::LoadFormValuesFromDataL()
	{
	CEikEdwin* nameEditor = static_cast<CEikEdwin*>(ControlOrNull(ENumericEditorDlgCIdEdwin));

	if (nameEditor)
		{
		HBufC* name = iEmployee.Name().AllocLC();
		nameEditor->SetTextL(name);
		CleanupStack::PopAndDestroy(name);
		}

	CAknIntegerEdwin* ageEditor = static_cast<CAknIntegerEdwin*>(ControlOrNull(ENumericEditorDlgCIdIntegerEdwin));

	if (ageEditor)
		{
		ageEditor->SetValueL(iEmployee.Age());
		}
	
	CEikFixedPointEditor* salaryEditor = static_cast<CEikFixedPointEditor*>(ControlOrNull(ENumericEditorDlgCIdFxPtEd));

	if (salaryEditor)
		{
		TInt salary = iEmployee.Salary();
		salaryEditor->SetValueL(&salary);
		}
	}

/**
* Called by QuerySaveChangeL when the user chooses to discard changes made to the form.
* Loads the form values from iEmployee
*/
void CNumericEditorForm::DoNotSaveFormDataL()
	{
	LoadFormValuesFromDataL();
	}


/**
* Called by the framework after the form has been sized and laid out, but before it has been 
* activated. 
* Loads the form values from iEmployee ready for execution of the form
*/
void CNumericEditorForm::PostLayoutDynInitL()
	{
	CAknForm::PostLayoutDynInitL();
	LoadFormValuesFromDataL();
	}


/**
* Constructs the editor form
* @param aEmployee to be populated
* @param aSaveState state if there was a succesful save.
*/
CNumericEditorForm::CNumericEditorForm (TNumericEditorEmployee& aEmployee,TBool &aSaveState) :
	iEmployee(aEmployee), iSaveState (aSaveState)
	{
	iSaveState = EFalse;
	}


/**
* Called by the framework when a menu is displayed.
* Removes the default items from the options menu of the form for editing a fields label,
* adding a field and deleting a field
*/
void CNumericEditorForm::DynInitMenuPaneL(TInt aResourceId, CEikMenuPane* aMenuPane)
	{
	CAknForm::DynInitMenuPaneL(aResourceId,aMenuPane);
	
	if (aResourceId == R_AVKON_FORM_MENUPANE)
		{
		aMenuPane->SetItemDimmed(EAknFormCmdLabel, ETrue);
		aMenuPane->SetItemDimmed(EAknFormCmdAdd, ETrue);
		aMenuPane->SetItemDimmed(EAknFormCmdDelete, ETrue);
		}
	}


// End of File