/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
namespace validation
{ // the states of our automat. enum State
{
START, // at the very start of the string
NUM_START, // the very start of the number
DIGIT_PRE_COMMA, // some pre-comma digits are read, perhaps including some thousand separators
DIGIT_POST_COMMA, // reading digits after the comma
EXPONENT_START, // at the very start of the exponent value // (means: not including the "e" which denotes the exponent)
EXPONENT_DIGIT, // currently reading the digits of the exponent
END // reached the end of the string
};
// a row in the transition table (means the set of states to be reached from a given state) typedef ::std::map< sal_Unicode, State > StateTransitions;
// a single transition typedef StateTransitions::value_type Transition;
enumclass FORMAT_CHANGE_TYPE
{
KEYONLY = 0x00, // only a new key was set
FORMATTER = 0x01, // a new formatter was set, usually implies a change of the key, too
PRECISION = 0x02, // a new precision was set
THOUSANDSSEP = 0x03, // the thousands separator setting changed
CURRENCY_SYMBOL = 0x10,
CURRSYM_POSITION = 0x20,
};
class VCL_DLLPUBLIC Formatter
{ public: // A SvNumberFormatter is very expensive (regarding time and space), it is a Singleton class StaticFormatter
{ static SvNumberFormatter* s_cFormatter; static sal_uLong s_nReferences; public:
StaticFormatter();
~StaticFormatter();
/** * This struct gets returned by the handlers that can be set via Formatter::SetParseTextHdl * and describes the result of trying to convert text to a double value.
*/ struct ParseResult
{
ParseResult()
: ParseResult(TRISTATE_INDET, 0.0)
{
}
TriState m_eState; // if m_eState is TRISTATE_TRUE, this contains the value double m_fValue;
};
protected:
OUString m_sLastValidText; // Has nothing to do with the current value. It is the last text, which was valid at input (checked by CheckText, // not yet through formatter)
Selection m_aLastSelection;
// There is a difference, when text formatting is enabled, if LostFocus formats the current String and displays it, // or if a double is created from the String and then bool m_bTreatAsNumber; // And with the following members we can use it for formatted text output as well ...
OUString m_sCurrentTextValue;
OUString m_sDefaultText;
// The last color from the Formatter at the last output operation (not we would use it, but you can get it) const Color* m_pLastOutputColor;
// Current value void SetValue(double dVal); double GetValue(); // The default implementation uses a formatter, if available
void SetTextValue(const OUString& rText); // The String is transformed to a double (with a formatter) and SetValue is called afterwards
bool IsEmptyFieldEnabled() const { return m_bEnableEmptyField; } void EnableEmptyField(bool bEnable); // If disabled, the value will be reset to the last valid value on leave
void SetDefaultValue(double dDefault) { m_dDefaultValue = dDefault; m_ValueState = valueDirty; m_bDefaultValueSet = true; } // If the current String is invalid, GetValue() returns this value double GetDefaultValue() const { return m_dDefaultValue; }
// Make the formatter recreate the output text from the value on the next // format attempt even if the value is the same as the current value. // Needed if the associated widget had its text changed by something other // that this Formatter (typically blanked out) since the last formatting void InvalidateValueState() { m_ValueState = valueDirty; }
SvNumberFormatter* GetFormatter() const { return m_pFormatter; } void SetFormatter(SvNumberFormatter* pFormatter, bool bResetFormat = true); // If bResetFormat is sal_False, the old format is tried to be kept. (expensive, if it is no default format, available in all formatters) // If sal_True, the new FormatKey is set to zero
bool GetThousandsSep() const; void SetThousandsSep(bool _bUseSeparator); // the is no check if the current format is numeric, so be cautious when calling these functions
sal_uInt16 GetDecimalDigits() const; void SetDecimalDigits(sal_uInt16 _nPrecision); // There is no check if the current format is numeric, so be cautious when calling these functions
SvNumberFormatter* StandardFormatter() { return m_aStaticFormatter; } // If no new Formatter is created explicitly, this can be used in SetFormatter...
OUString GetFormat(LanguageType& eLang) const; bool SetFormat(const OUString& rFormatString, LanguageType eLang); // sal_False, if the FormatString could not be set (and very probably is invalid) // This Object is shared via all instances, so be careful!
bool IsStrictFormat() const { return m_bStrictFormat; } void SetStrictFormat(bool bEnable) { m_bStrictFormat = bEnable; } // Check format during input
//The following methods are interesting, if m_bTreatAsNumber is set to sal_False //If someone does not care about all the double handling and just wants to print the text formatted. //(((The text will be formatted, using the Formatter, and then set) void SetTextFormatted(const OUString& rText);
OUString const & GetTextValue() const;
// The last colour from the Formatter's last output operation. Output operations get triggered by: // SetValue, SetTextValue, SetTextFormatted, also indirectly via SetMin - / -MaxValue const Color* GetLastOutputColor() const { return m_pLastOutputColor; }
/** reformats the current text. Interesting if the user entered some text in an "input format", and this should be formatted in the "output format" (which may differ, e.g. by additional numeric digits or such).
*/ void Commit();
// enable automatic coloring. if set to sal_True, and the format the field is working with for any current value // says that it has to be painted in a special color (e.g. a format where negative numbers should be printed // red), the text is painted with that color automatically. // The color used is the same as returned by GetLastOutputColor() void SetAutoColor(bool _bAutomatic);
/** enables handling of not-a-number value.
When this is set to <FALSE/> (the default), then invalid inputs (i.e. text which cannot be interpreted, according to the current formatting) will be handled as if the default value has been entered. GetValue the will return this default value.
When set to <TRUE/>, then GetValue will return NaN (not a number, see <method scope="rtl::math">isNan</method>) when the current input is invalid.
Note that setting this to <TRUE/> implies that upon leaving the control, the input will *not* be corrected to a valid value. For example, if the user enters "foo" in the control, and then tabs out of it, the text "foo" will persist, and GetValue will return NaN in subsequent calls.
*/ void EnableNotANumber( bool _bEnable );
/** When being set to true, the strings in the field are formatted using the InputLine format. That's also what you get in Calc when you edit a cell using F2
*/ void UseInputStringForFormatting(); bool IsUsingInputStringForFormatting() const { return m_bUseInputStringForFormatting;}
void Modify(bool makeValueDirty = true);
void EntryLostFocus();
void ReFormat();
// any aspect of the current format has changed virtualvoid FormatChanged(FORMAT_CHANGE_TYPE nWhat);
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