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StandardCalculatorViewModel.cpp
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
#include "pch.h"
#include "StandardCalculatorViewModel.h"
#include "Common/CalculatorButtonPressedEventArgs.h"
#include "Common/LocalizationStringUtil.h"
#include "Common/LocalizationSettings.h"
#include "Common/CopyPasteManager.h"
#include "Common/TraceLogger.h"
using namespace CalculatorApp;
using namespace CalculatorApp::ViewModel::Common;
using namespace CalculatorApp::ViewModel::Common::Automation;
using namespace CalculatorApp::ViewModel;
using namespace CalculationManager;
using namespace concurrency;
using namespace Platform;
using namespace Platform::Collections;
using namespace std;
using namespace Windows::ApplicationModel::Resources;
using namespace Windows::Foundation;
using namespace Windows::System;
using namespace Windows::UI::Core;
using namespace Windows::UI::Popups;
using namespace Windows::Storage::Streams;
using namespace Windows::Foundation::Collections;
using namespace concurrency;
constexpr int StandardModePrecision = 16;
constexpr int ScientificModePrecision = 32;
constexpr int ProgrammerModePrecision = 64;
namespace
{
StringReference IsStandardPropertyName(L"IsStandard");
StringReference IsScientificPropertyName(L"IsScientific");
StringReference IsProgrammerPropertyName(L"IsProgrammer");
StringReference IsAlwaysOnTopPropertyName(L"IsAlwaysOnTop");
StringReference DisplayValuePropertyName(L"DisplayValue");
StringReference CalculationResultAutomationNamePropertyName(L"CalculationResultAutomationName");
StringReference IsBitFlipCheckedPropertyName(L"IsBitFlipChecked");
StringReference CalcAlwaysOnTop(L"CalcAlwaysOnTop");
StringReference CalcBackToFullView(L"CalcBackToFullView");
}
namespace CalculatorResourceKeys
{
StringReference CalculatorExpression(L"Format_CalculatorExpression");
StringReference CalculatorResults(L"Format_CalculatorResults");
StringReference CalculatorResults_DecimalSeparator_Announced(L"Format_CalculatorResults_Decimal");
StringReference HexButton(L"Format_HexButtonValue");
StringReference DecButton(L"Format_DecButtonValue");
StringReference OctButton(L"Format_OctButtonValue");
StringReference BinButton(L"Format_BinButtonValue");
StringReference OpenParenthesisCountAutomationFormat(L"Format_OpenParenthesisCountAutomationNamePrefix");
StringReference NoParenthesisAdded(L"NoRightParenthesisAdded_Announcement");
StringReference MaxDigitsReachedFormat(L"Format_MaxDigitsReached");
StringReference ButtonPressFeedbackFormat(L"Format_ButtonPressAuditoryFeedback");
StringReference MemorySave(L"Format_MemorySave");
StringReference MemoryItemChanged(L"Format_MemorySlotChanged");
StringReference MemoryItemCleared(L"Format_MemorySlotCleared");
StringReference MemoryCleared(L"Memory_Cleared");
StringReference DisplayCopied(L"Display_Copied");
}
StandardCalculatorViewModel::StandardCalculatorViewModel()
: m_DisplayValue(L"0")
, m_DecimalDisplayValue(L"0")
, m_HexDisplayValue(L"0")
, m_BinaryDisplayValue(L"0")
, m_OctalDisplayValue(L"0")
, m_BinaryDigits(ref new Vector<bool>(64, false))
, m_standardCalculatorManager(&m_calculatorDisplay, &m_resourceProvider)
, m_ExpressionTokens(ref new Vector<DisplayExpressionToken ^>())
, m_MemorizedNumbers(ref new Vector<MemoryItemViewModel ^>())
, m_IsMemoryEmpty(true)
, m_IsFToEChecked(false)
, m_IsShiftProgrammerChecked(false)
, m_valueBitLength(BitLength::BitLengthQWord)
, m_isBitFlipChecked(false)
, m_IsBinaryBitFlippingEnabled(false)
, m_CurrentRadixType(NumberBase::DecBase)
, m_CurrentAngleType(NumbersAndOperatorsEnum::Degree)
, m_Announcement(nullptr)
, m_OpenParenthesisCount(0)
, m_feedbackForButtonPress(nullptr)
, m_isRtlLanguage(false)
, m_localizedMaxDigitsReachedAutomationFormat(nullptr)
, m_localizedButtonPressFeedbackAutomationFormat(nullptr)
, m_localizedMemorySavedAutomationFormat(nullptr)
, m_localizedMemoryItemChangedAutomationFormat(nullptr)
, m_localizedMemoryItemClearedAutomationFormat(nullptr)
, m_localizedMemoryCleared(nullptr)
, m_localizedOpenParenthesisCountChangedAutomationFormat(nullptr)
, m_localizedNoRightParenthesisAddedFormat(nullptr)
, m_TokenPosition(-1)
, m_isLastOperationHistoryLoad(false)
{
WeakReference calculatorViewModel(this);
auto appResourceProvider = AppResourceProvider::GetInstance();
m_calculatorDisplay.SetCallback(calculatorViewModel);
m_expressionAutomationNameFormat = appResourceProvider->GetResourceString(CalculatorResourceKeys::CalculatorExpression);
m_localizedCalculationResultAutomationFormat = appResourceProvider->GetResourceString(CalculatorResourceKeys::CalculatorResults);
m_localizedCalculationResultDecimalAutomationFormat =
appResourceProvider->GetResourceString(CalculatorResourceKeys::CalculatorResults_DecimalSeparator_Announced);
m_localizedHexaDecimalAutomationFormat = appResourceProvider->GetResourceString(CalculatorResourceKeys::HexButton);
m_localizedDecimalAutomationFormat = appResourceProvider->GetResourceString(CalculatorResourceKeys::DecButton);
m_localizedOctalAutomationFormat = appResourceProvider->GetResourceString(CalculatorResourceKeys::OctButton);
m_localizedBinaryAutomationFormat = appResourceProvider->GetResourceString(CalculatorResourceKeys::BinButton);
// Initialize the Automation Name
CalculationResultAutomationName = GetLocalizedStringFormat(m_localizedCalculationResultAutomationFormat, m_DisplayValue);
CalculationExpressionAutomationName = GetLocalizedStringFormat(m_expressionAutomationNameFormat, L"");
// Initialize history view model
m_HistoryVM = ref new HistoryViewModel(&m_standardCalculatorManager);
m_HistoryVM->SetCalculatorDisplay(m_calculatorDisplay);
m_decimalSeparator = LocalizationSettings::GetInstance()->GetDecimalSeparator();
if (CoreWindow::GetForCurrentThread() != nullptr)
{
// Must have a CoreWindow to access the resource context.
m_isRtlLanguage = LocalizationService::GetInstance()->IsRtlLayout();
}
IsEditingEnabled = false;
IsUnaryOperatorEnabled = true;
IsBinaryOperatorEnabled = true;
IsOperandEnabled = true;
IsNegateEnabled = true;
IsDecimalEnabled = true;
AreProgrammerRadixOperatorsVisible = false;
}
String ^ StandardCalculatorViewModel::LocalizeDisplayValue(_In_ wstring const& displayValue)
{
wstring result(displayValue);
// Adds leading padding 0's to Programmer Mode's Binary Display
if (IsProgrammer && CurrentRadixType == NumberBase::BinBase)
{
result = AddPadding(result);
}
LocalizationSettings::GetInstance()->LocalizeDisplayValue(&result);
return ref new Platform::String(result.c_str());
}
String ^ StandardCalculatorViewModel::CalculateNarratorDisplayValue(_In_ wstring const& displayValue, _In_ String ^ localizedDisplayValue)
{
String ^ localizedValue = localizedDisplayValue;
String ^ automationFormat = m_localizedCalculationResultAutomationFormat;
// The narrator doesn't read the decimalSeparator if it's the last character
if (Utils::IsLastCharacterTarget(displayValue, m_decimalSeparator))
{
// remove the decimal separator, to avoid a long pause between words
localizedValue = LocalizeDisplayValue(displayValue.substr(0, displayValue.length() - 1));
// Use a format which has a word in the decimal separator's place
// "The Display is 10 point"
automationFormat = m_localizedCalculationResultDecimalAutomationFormat;
}
// In Programmer modes using non-base10, we want the strings to be read as literal digits.
if (IsProgrammer && CurrentRadixType != NumberBase::DecBase)
{
localizedValue = GetNarratorStringReadRawNumbers(localizedValue);
}
return GetLocalizedStringFormat(automationFormat, localizedValue);
}
String ^ StandardCalculatorViewModel::GetNarratorStringReadRawNumbers(_In_ String ^ localizedDisplayValue)
{
wstring ws;
LocalizationSettings^ locSettings = LocalizationSettings::GetInstance();
// Insert a space after each digit in the string, to force Narrator to read them as separate numbers.
for (const wchar_t& c : localizedDisplayValue)
{
ws += c;
if (locSettings->IsLocalizedHexDigit(c))
{
ws += L' ';
}
}
return ref new String(ws.c_str());
}
void StandardCalculatorViewModel::SetPrimaryDisplay(_In_ String ^ displayStringValue, _In_ bool isError)
{
String ^ localizedDisplayStringValue = LocalizeDisplayValue(displayStringValue->Data());
// Set this variable before the DisplayValue is modified, Otherwise the DisplayValue will
// not match what the narrator is saying
m_CalculationResultAutomationName = CalculateNarratorDisplayValue(displayStringValue->Data(), localizedDisplayStringValue);
AreAlwaysOnTopResultsUpdated = false;
if (DisplayValue != localizedDisplayStringValue)
{
DisplayValue = localizedDisplayStringValue;
AreAlwaysOnTopResultsUpdated = true;
}
IsInError = isError;
if (IsProgrammer)
{
UpdateProgrammerPanelDisplay();
}
}
void StandardCalculatorViewModel::DisplayPasteError()
{
m_standardCalculatorManager.DisplayPasteError();
}
void StandardCalculatorViewModel::SetParenthesisCount(_In_ unsigned int parenthesisCount)
{
if (m_OpenParenthesisCount == parenthesisCount)
{
return;
}
OpenParenthesisCount = parenthesisCount;
if (IsProgrammer || IsScientific)
{
SetOpenParenthesisCountNarratorAnnouncement();
}
}
void StandardCalculatorViewModel::SetOpenParenthesisCountNarratorAnnouncement()
{
wstring localizedParenthesisCount = to_wstring(m_OpenParenthesisCount).c_str();
LocalizationSettings::GetInstance()->LocalizeDisplayValue(&localizedParenthesisCount);
if (m_localizedOpenParenthesisCountChangedAutomationFormat == nullptr)
{
m_localizedOpenParenthesisCountChangedAutomationFormat =
AppResourceProvider::GetInstance()->GetResourceString(CalculatorResourceKeys::OpenParenthesisCountAutomationFormat);
}
String ^ announcement =
LocalizationStringUtil::GetLocalizedString(m_localizedOpenParenthesisCountChangedAutomationFormat, StringReference(localizedParenthesisCount.c_str()));
Announcement = CalculatorAnnouncement::GetOpenParenthesisCountChangedAnnouncement(announcement);
}
void StandardCalculatorViewModel::OnNoRightParenAdded()
{
SetNoParenAddedNarratorAnnouncement();
}
void StandardCalculatorViewModel::SetNoParenAddedNarratorAnnouncement()
{
if (m_localizedNoRightParenthesisAddedFormat == nullptr)
{
m_localizedNoRightParenthesisAddedFormat = AppResourceProvider::GetInstance()->GetResourceString(CalculatorResourceKeys::NoParenthesisAdded);
}
Announcement = CalculatorAnnouncement::GetNoRightParenthesisAddedAnnouncement(m_localizedNoRightParenthesisAddedFormat);
}
void StandardCalculatorViewModel::DisableButtons(CommandType selectedExpressionCommandType)
{
if (selectedExpressionCommandType == CommandType::OperandCommand)
{
IsBinaryOperatorEnabled = false;
IsUnaryOperatorEnabled = false;
IsOperandEnabled = true;
IsNegateEnabled = true;
IsDecimalEnabled = true;
}
if (selectedExpressionCommandType == CommandType::BinaryCommand)
{
IsBinaryOperatorEnabled = true;
IsUnaryOperatorEnabled = false;
IsOperandEnabled = false;
IsNegateEnabled = false;
IsDecimalEnabled = false;
}
if (selectedExpressionCommandType == CommandType::UnaryCommand)
{
IsBinaryOperatorEnabled = false;
IsUnaryOperatorEnabled = true;
IsOperandEnabled = false;
IsNegateEnabled = true;
IsDecimalEnabled = false;
}
}
void StandardCalculatorViewModel::SetExpressionDisplay(
_Inout_ shared_ptr<std::vector<pair<wstring, int>>> const& tokens,
_Inout_ shared_ptr<std::vector<shared_ptr<IExpressionCommand>>> const& commands)
{
m_tokens = tokens;
m_commands = commands;
if (!IsEditingEnabled)
{
SetTokens(tokens);
}
CalculationExpressionAutomationName = GetCalculatorExpressionAutomationName();
AreTokensUpdated = true;
}
void StandardCalculatorViewModel::SetHistoryExpressionDisplay(
_Inout_ shared_ptr<vector<pair<wstring, int>>> const& tokens,
_Inout_ shared_ptr<vector<shared_ptr<IExpressionCommand>>> const& commands)
{
m_tokens = make_shared<vector<pair<wstring, int>>>(*tokens);
m_commands = make_shared<vector<shared_ptr<IExpressionCommand>>>(*commands);
IsEditingEnabled = false;
// Setting the History Item Load Mode so that UI does not get updated with recalculation of every token
m_standardCalculatorManager.SetInHistoryItemLoadMode(true);
Recalculate(true);
m_standardCalculatorManager.SetInHistoryItemLoadMode(false);
m_isLastOperationHistoryLoad = true;
}
void StandardCalculatorViewModel::SetTokens(_Inout_ shared_ptr<vector<pair<wstring, int>>> const& tokens)
{
AreTokensUpdated = false;
const size_t nTokens = tokens->size();
if (nTokens == 0)
{
m_ExpressionTokens->Clear();
return;
}
LocalizationSettings^ localizer = LocalizationSettings::GetInstance();
const wstring separator = L" ";
for (unsigned int i = 0; i < nTokens; ++i)
{
auto currentToken = (*tokens)[i];
Common::TokenType type;
bool isEditable = currentToken.second != -1;
localizer->LocalizeDisplayValue(&(currentToken.first));
if (!isEditable)
{
type = currentToken.first == separator ? TokenType::Separator : TokenType::Operator;
}
else
{
const shared_ptr<IExpressionCommand>& command = m_commands->at(currentToken.second);
type = command->GetCommandType() == CommandType::OperandCommand ? TokenType::Operand : TokenType::Operator;
}
auto currentTokenString = StringReference(currentToken.first.c_str());
if (i < m_ExpressionTokens->Size)
{
auto existingItem = m_ExpressionTokens->GetAt(i);
if (type == existingItem->Type && existingItem->Token->Equals(currentTokenString))
{
existingItem->TokenPosition = i;
existingItem->IsTokenEditable = isEditable;
existingItem->CommandIndex = 0;
}
else
{
auto expressionToken = ref new DisplayExpressionToken(currentTokenString, i, isEditable, type);
m_ExpressionTokens->InsertAt(i, expressionToken);
}
}
else
{
auto expressionToken = ref new DisplayExpressionToken(currentTokenString, i, isEditable, type);
m_ExpressionTokens->Append(expressionToken);
}
}
while (m_ExpressionTokens->Size != nTokens)
{
m_ExpressionTokens->RemoveAtEnd();
}
}
String ^ StandardCalculatorViewModel::GetCalculatorExpressionAutomationName()
{
String ^ expression = L"";
for (auto&& token : m_ExpressionTokens)
{
expression += LocalizationService::GetNarratorReadableToken(token->Token);
}
return GetLocalizedStringFormat(m_expressionAutomationNameFormat, expression);
}
void StandardCalculatorViewModel::SetMemorizedNumbers(const vector<wstring>& newMemorizedNumbers)
{
LocalizationSettings^ localizer = LocalizationSettings::GetInstance();
if (newMemorizedNumbers.size() == 0) // Memory has been cleared
{
MemorizedNumbers->Clear();
IsMemoryEmpty = true;
}
// A new value is added to the memory
else if (newMemorizedNumbers.size() > MemorizedNumbers->Size)
{
while (newMemorizedNumbers.size() > MemorizedNumbers->Size)
{
size_t newValuePosition = newMemorizedNumbers.size() - MemorizedNumbers->Size - 1;
auto stringValue = newMemorizedNumbers.at(newValuePosition);
MemoryItemViewModel ^ memorySlot = ref new MemoryItemViewModel(this);
memorySlot->Position = 0;
localizer->LocalizeDisplayValue(&stringValue);
memorySlot->Value = ref new String(stringValue.c_str());
MemorizedNumbers->InsertAt(0, memorySlot);
IsMemoryEmpty = IsAlwaysOnTop;
// Update the slot position for the rest of the slots
for (unsigned int i = 1; i < MemorizedNumbers->Size; i++)
{
MemorizedNumbers->GetAt(i)->Position++;
}
}
}
else if (newMemorizedNumbers.size() == MemorizedNumbers->Size) // Either M+ or M-
{
for (unsigned int i = 0; i < MemorizedNumbers->Size; i++)
{
auto newStringValue = newMemorizedNumbers.at(i);
localizer->LocalizeDisplayValue(&newStringValue);
// If the value is different, update the value
if (MemorizedNumbers->GetAt(i)->Value != StringReference(newStringValue.c_str()))
{
MemorizedNumbers->GetAt(i)->Value = ref new String(newStringValue.c_str());
}
}
}
}
void StandardCalculatorViewModel::FtoEButtonToggled()
{
OnButtonPressed(NumbersAndOperatorsEnum::FToE);
}
void StandardCalculatorViewModel::HandleUpdatedOperandData(Command cmdenum)
{
DisplayExpressionToken ^ displayExpressionToken = ExpressionTokens->GetAt(m_TokenPosition);
if (displayExpressionToken == nullptr)
{
return;
}
if ((displayExpressionToken->Token == nullptr) || (displayExpressionToken->Token->Length() == 0))
{
displayExpressionToken->CommandIndex = 0;
}
wchar_t ch = 0;
if ((cmdenum >= Command::Command0) && (cmdenum <= Command::Command9))
{
switch (cmdenum)
{
case Command::Command0:
ch = L'0';
break;
case Command::Command1:
ch = L'1';
break;
case Command::Command2:
ch = L'2';
break;
case Command::Command3:
ch = L'3';
break;
case Command::Command4:
ch = L'4';
break;
case Command::Command5:
ch = L'5';
break;
case Command::Command6:
ch = L'6';
break;
case Command::Command7:
ch = L'7';
break;
case Command::Command8:
ch = L'8';
break;
case Command::Command9:
ch = L'9';
break;
}
}
else if (cmdenum == Command::CommandPNT)
{
ch = L'.';
}
else if (cmdenum == Command::CommandBACK)
{
ch = L'x';
}
else
{
return;
}
int length = 0;
wchar_t* temp = new wchar_t[100];
const wchar_t* data = m_selectedExpressionLastData->Data();
int i = 0, j = 0;
int commandIndex = displayExpressionToken->CommandIndex;
if (IsOperandTextCompletelySelected)
{
// Clear older text;
m_selectedExpressionLastData = L"";
if (ch == L'x')
{
temp[0] = L'\0';
commandIndex = 0;
}
else
{
temp[0] = ch;
temp[1] = L'\0';
commandIndex = 1;
}
IsOperandTextCompletelySelected = false;
}
else
{
if (ch == L'x')
{
if (commandIndex == 0)
{
delete[] temp;
return;
}
length = m_selectedExpressionLastData->Length();
for (; j < length; ++j)
{
if (j == commandIndex - 1)
{
continue;
}
temp[i++] = data[j];
}
temp[i] = L'\0';
commandIndex -= 1;
}
else
{
length = m_selectedExpressionLastData->Length() + 1;
if (length > 50)
{
delete[] temp;
return;
}
for (; i < length; ++i)
{
if (i == commandIndex)
{
temp[i] = ch;
continue;
}
temp[i] = data[j++];
}
temp[i] = L'\0';
commandIndex += 1;
}
}
String ^ updatedData = ref new String(temp);
UpdateOperand(m_TokenPosition, updatedData);
displayExpressionToken->Token = updatedData;
IsOperandUpdatedUsingViewModel = true;
displayExpressionToken->CommandIndex = commandIndex;
}
bool StandardCalculatorViewModel::IsOperator(Command cmdenum)
{
if ((cmdenum >= Command::Command0 && cmdenum <= Command::Command9) || (cmdenum == Command::CommandPNT) || (cmdenum == Command::CommandBACK)
|| (cmdenum == Command::CommandEXP) || (cmdenum == Command::CommandFE) || (cmdenum == Command::ModeBasic) || (cmdenum == Command::ModeProgrammer)
|| (cmdenum == Command::ModeScientific) || (cmdenum == Command::CommandINV) || (cmdenum == Command::CommandCENTR) || (cmdenum == Command::CommandDEG)
|| (cmdenum == Command::CommandRAD) || (cmdenum == Command::CommandGRAD)
|| ((cmdenum >= Command::CommandBINEDITSTART) && (cmdenum <= Command::CommandBINEDITEND)))
{
return false;
}
return true;
}
void StandardCalculatorViewModel::OnButtonPressed(Object ^ parameter)
{
m_feedbackForButtonPress = CalculatorButtonPressedEventArgs::GetAuditoryFeedbackFromCommandParameter(parameter);
NumbersAndOperatorsEnum numOpEnum = CalculatorButtonPressedEventArgs::GetOperationFromCommandParameter(parameter);
Command cmdenum = ConvertToOperatorsEnum(numOpEnum);
if (IsInError)
{
m_standardCalculatorManager.SendCommand(Command::CommandCLEAR);
if (!IsRecoverableCommand(static_cast<Command>(numOpEnum)))
{
return;
}
}
if (IsEditingEnabled && numOpEnum != NumbersAndOperatorsEnum::IsScientificMode && numOpEnum != NumbersAndOperatorsEnum::IsStandardMode
&& numOpEnum != NumbersAndOperatorsEnum::IsProgrammerMode && numOpEnum != NumbersAndOperatorsEnum::FToE
&& (numOpEnum != NumbersAndOperatorsEnum::Degree) && (numOpEnum != NumbersAndOperatorsEnum::Radians) && (numOpEnum != NumbersAndOperatorsEnum::Grads))
{
if (!m_KeyPressed)
{
SaveEditedCommand(m_selectedExpressionToken->TokenPosition, cmdenum);
}
}
else
{
if (numOpEnum == NumbersAndOperatorsEnum::IsStandardMode || numOpEnum == NumbersAndOperatorsEnum::IsScientificMode
|| numOpEnum == NumbersAndOperatorsEnum::IsProgrammerMode)
{
IsEditingEnabled = false;
}
if (numOpEnum == NumbersAndOperatorsEnum::Memory)
{
OnMemoryButtonPressed();
}
else
{
if (numOpEnum == NumbersAndOperatorsEnum::Clear || numOpEnum == NumbersAndOperatorsEnum::ClearEntry
|| numOpEnum == NumbersAndOperatorsEnum::IsStandardMode || numOpEnum == NumbersAndOperatorsEnum::IsProgrammerMode)
{
// On Clear('C') the F-E button needs to be UnChecked if it in Checked state.
// Also, the Primary Display Value should not show in exponential format.
// Hence the check below to ensure parity with Desktop Calculator.
// Clear the FE mode if the switching to StandardMode, since 'C'/'CE' in StandardMode
// doesn't honor the FE button.
if (IsFToEChecked)
{
IsFToEChecked = false;
}
}
if (numOpEnum == NumbersAndOperatorsEnum::Degree || numOpEnum == NumbersAndOperatorsEnum::Radians || numOpEnum == NumbersAndOperatorsEnum::Grads)
{
m_CurrentAngleType = numOpEnum;
}
if ((cmdenum >= Command::Command0 && cmdenum <= Command::Command9) || (cmdenum == Command::CommandPNT) || (cmdenum == Command::CommandBACK)
|| (cmdenum == Command::CommandEXP))
{
IsOperatorCommand = false;
}
else
{
IsOperatorCommand = true;
}
if (m_isLastOperationHistoryLoad
&& ((numOpEnum != NumbersAndOperatorsEnum::Degree) && (numOpEnum != NumbersAndOperatorsEnum::Radians)
&& (numOpEnum != NumbersAndOperatorsEnum::Grads)))
{
IsFToEEnabled = true;
m_isLastOperationHistoryLoad = false;
}
TraceLogger::GetInstance()->UpdateButtonUsage(numOpEnum, GetCalculatorMode());
m_standardCalculatorManager.SendCommand(cmdenum);
}
}
}
RadixType StandardCalculatorViewModel::GetRadixTypeFromNumberBase(NumberBase base)
{
switch (base)
{
case NumberBase::BinBase:
return RadixType::Binary;
case NumberBase::HexBase:
return RadixType::Hex;
case NumberBase::OctBase:
return RadixType::Octal;
default:
return RadixType::Decimal;
}
}
void StandardCalculatorViewModel::OnCopyCommand(Object ^ parameter)
{
CopyPasteManager::CopyToClipboard(GetRawDisplayValue());
String ^ announcement = AppResourceProvider::GetInstance()->GetResourceString(CalculatorResourceKeys::DisplayCopied);
Announcement = CalculatorAnnouncement::GetDisplayCopiedAnnouncement(announcement);
}
void StandardCalculatorViewModel::OnPasteCommand(Object ^ parameter)
{
auto that(this);
ViewMode mode;
BitLength bitLengthType = BitLength::BitLengthUnknown;
NumberBase numberBase = NumberBase::Unknown;
if (IsScientific)
{
mode = ViewMode::Scientific;
}
else if (IsProgrammer)
{
mode = ViewMode::Programmer;
bitLengthType = m_valueBitLength;
numberBase = CurrentRadixType;
}
else
{
mode = ViewMode::Standard;
}
// if there's nothing to copy early out
if (IsEditingEnabled || !CopyPasteManager::HasStringToPaste())
{
return;
}
// Ensure that the paste happens on the UI thread
create_task(CopyPasteManager::GetStringToPaste(mode, NavCategoryStates::GetGroupType(mode), numberBase, bitLengthType))
.then([that, mode](String ^ pastedString) { that->OnPaste(pastedString); }, concurrency::task_continuation_context::use_current());
}
CalculationManager::Command StandardCalculatorViewModel::ConvertToOperatorsEnum(NumbersAndOperatorsEnum operation)
{
return safe_cast<Command>(operation);
}
void StandardCalculatorViewModel::OnPaste(String ^ pastedString)
{
// If pastedString is invalid("NoOp") then display pasteError else process the string
if (CopyPasteManager::IsErrorMessage(pastedString))
{
this->DisplayPasteError();
return;
}
TraceLogger::GetInstance()->LogInputPasted(GetCalculatorMode());
bool isFirstLegalChar = true;
m_standardCalculatorManager.SendCommand(Command::CommandCENTR);
bool sendNegate = false;
bool processedDigit = false;
bool sentEquals = false;
bool isPreviousOperator = false;
vector<bool> negateStack;
// Iterate through each character pasted, and if it's valid, send it to the model.
auto it = pastedString->Begin();
while (it != pastedString->End())
{
bool sendCommand = true;
auto buttonInfo = MapCharacterToButtonId(*it);
NumbersAndOperatorsEnum mappedNumOp = buttonInfo.buttonId;
bool canSendNegate = buttonInfo.canSendNegate;
if (mappedNumOp == NumbersAndOperatorsEnum::None)
{
++it;
continue;
}
if (isFirstLegalChar || isPreviousOperator)
{
isFirstLegalChar = false;
isPreviousOperator = false;
// If the character is a - sign, send negate
// after sending the next legal character. Send nothing now, or
// it will be ignored.
if (NumbersAndOperatorsEnum::Subtract == mappedNumOp)
{
sendNegate = true;
sendCommand = false;
}
// Support (+) sign prefix
if (NumbersAndOperatorsEnum::Add == mappedNumOp)
{
sendCommand = false;
}
}
switch (mappedNumOp)
{
// Opening parenthesis starts a new expression and pushes negation state onto the stack
case NumbersAndOperatorsEnum::OpenParenthesis:
negateStack.push_back(sendNegate);
sendNegate = false;
break;
// Closing parenthesis pops the negation state off the stack and sends it down to the calc engine
case NumbersAndOperatorsEnum::CloseParenthesis:
if (!negateStack.empty())
{
sendNegate = negateStack.back();
negateStack.pop_back();
canSendNegate = true;
}
else
{
// Don't send a closing parenthesis if a matching opening parenthesis hasn't been sent already
sendCommand = false;
}
break;
case NumbersAndOperatorsEnum::Zero:
case NumbersAndOperatorsEnum::One:
case NumbersAndOperatorsEnum::Two:
case NumbersAndOperatorsEnum::Three:
case NumbersAndOperatorsEnum::Four:
case NumbersAndOperatorsEnum::Five:
case NumbersAndOperatorsEnum::Six:
case NumbersAndOperatorsEnum::Seven:
case NumbersAndOperatorsEnum::Eight:
case NumbersAndOperatorsEnum::Nine:
processedDigit = true;
break;
case NumbersAndOperatorsEnum::Add:
case NumbersAndOperatorsEnum::Subtract:
case NumbersAndOperatorsEnum::Multiply:
case NumbersAndOperatorsEnum::Divide:
isPreviousOperator = true;
break;
}
if (sendCommand)
{
sentEquals = (mappedNumOp == NumbersAndOperatorsEnum::Equals);
Command cmdenum = ConvertToOperatorsEnum(mappedNumOp);
m_standardCalculatorManager.SendCommand(cmdenum);
// The CalcEngine state machine won't allow the negate command to be sent before any
// other digits, so instead a flag is set and the command is sent after the first appropriate
// command.
if (sendNegate)
{
if (canSendNegate)
{
Command cmdNegate = ConvertToOperatorsEnum(NumbersAndOperatorsEnum::Negate);
m_standardCalculatorManager.SendCommand(cmdNegate);
}
// Can't send negate on a leading zero, so wait until the appropriate time to send it.
if (NumbersAndOperatorsEnum::Zero != mappedNumOp && NumbersAndOperatorsEnum::Decimal != mappedNumOp)
{
sendNegate = false;
}
}
}
// Handle exponent and exponent sign (...e+... or ...e-... or ...e...)
if (mappedNumOp == NumbersAndOperatorsEnum::Exp)
{
// Check the following item
switch (MapCharacterToButtonId(*(it + 1)).buttonId)
{
case NumbersAndOperatorsEnum::Subtract:
{
Command cmdNegate = ConvertToOperatorsEnum(NumbersAndOperatorsEnum::Negate);
m_standardCalculatorManager.SendCommand(cmdNegate);
++it;
}
break;
case NumbersAndOperatorsEnum::Add:
{
// Nothing to do, skip to the next item
++it;
}
break;
}
}
++it;
}
}
void StandardCalculatorViewModel::OnClearMemoryCommand(Object ^ parameter)
{
m_standardCalculatorManager.MemorizedNumberClearAll();
TraceLogger::GetInstance()->UpdateButtonUsage(NumbersAndOperatorsEnum::MemoryClear, GetCalculatorMode());
if (m_localizedMemoryCleared == nullptr)
{
m_localizedMemoryCleared = AppResourceProvider::GetInstance()->GetResourceString(CalculatorResourceKeys::MemoryCleared);
}
Announcement = CalculatorAnnouncement::GetMemoryClearedAnnouncement(m_localizedMemoryCleared);
}
ButtonInfo StandardCalculatorViewModel::MapCharacterToButtonId(char16 ch)
{
ButtonInfo result;
result.buttonId = NumbersAndOperatorsEnum::None;
result.canSendNegate = false;
switch (ch)
{
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
result.buttonId = NumbersAndOperatorsEnum::Zero + static_cast<NumbersAndOperatorsEnum>(ch - L'0');
result.canSendNegate = true;
break;
case '*':
result.buttonId = NumbersAndOperatorsEnum::Multiply;
break;
case '+':
result.buttonId = NumbersAndOperatorsEnum::Add;
break;
case '-':
result.buttonId = NumbersAndOperatorsEnum::Subtract;
break;
case '/':
result.buttonId = NumbersAndOperatorsEnum::Divide;
break;
case '^':
if (IsScientific)
{
result.buttonId = NumbersAndOperatorsEnum::XPowerY;
}
break;
case '%':
if (IsScientific || IsProgrammer)
{
result.buttonId = NumbersAndOperatorsEnum::Mod;
}
break;
case '=':
result.buttonId = NumbersAndOperatorsEnum::Equals;
break;
case '(':
result.buttonId = NumbersAndOperatorsEnum::OpenParenthesis;
break;
case ')':
result.buttonId = NumbersAndOperatorsEnum::CloseParenthesis;
break;
case 'a':
case 'A':
result.buttonId = NumbersAndOperatorsEnum::A;
break;
case 'b':
case 'B':
result.buttonId = NumbersAndOperatorsEnum::B;
break;
case 'c':
case 'C':
result.buttonId = NumbersAndOperatorsEnum::C;
break;
case 'd':
case 'D':
result.buttonId = NumbersAndOperatorsEnum::D;
break;
case 'e':
case 'E':
// Only allow scientific notation in scientific mode
if (IsProgrammer)
{
result.buttonId = NumbersAndOperatorsEnum::E;
}
else
{
result.buttonId = NumbersAndOperatorsEnum::Exp;
}
break;
case 'f':
case 'F':
result.buttonId = NumbersAndOperatorsEnum::F;
break;
default:
// For the decimalSeparator, we need to respect the user setting.