Aplicar formatação personalizada aos campos

Às vezes, os usuários precisam aplicar formatação personalizada aos campos. Neste artigo, veremos alguns exemplos de como isso pode ser feito.

Para saber mais opções, consulte a lista completa de propriedades para cada tipo de campo na classe correspondente em Fields namespace.

Como aplicar a formatação personalizada ao resultado do campo

Aspose.Words fornece API para formatação personalizada do resultado do campo. Você pode implementar a interface IFieldResultFormatter para controlar como o resultado do campo é formatado. Você pode aplicar a opção de formato numérico, ou seja, #"#.## “, mudança de formato de data/hora, ou seja, @ " dd.MM.yyyy”, e interruptor de formato numérico, ou seja, * Ordinal.

O exemplo de código a seguir mostra como aplicar a formatação personalizada para o resultado do campo:

//For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-C
auto doc = MakeObject<Document>();
auto builder = MakeObject<DocumentBuilder>(doc);

auto field = builder->InsertField(u"=-1234567.89 \\# \"### ### ###.000\"", nullptr);
doc->get_FieldOptions()->set_ResultFormatter(System::MakeObject<FieldResultFormatter>(u"[{0:N2}]", nullptr));

field->Update();
doc->Save(ArtifactsDir + u"WorkingWithFields.FormatFieldResult.docx");

//For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-C
class FieldResultFormatter : public IFieldResultFormatter
{
public:
    enum class FormatInvocationType
    {
        Numeric,
        DateTime,
        General,
        All
    };

private:
    class FormatInvocation : public System::Object
    {
    public:
        ApiExamples::ExDocumentBuilder::FieldResultFormatter::FormatInvocationType get_FormatInvocationType()
        {
            return pr_FormatInvocationType;
        }

        SharedPtr<System::Object> get_Value()
        {
            return pr_Value;
        }

        String get_OriginalFormat()
        {
            return pr_OriginalFormat;
        }

        String get_NewValue()
        {
            return pr_NewValue;
        }

        FormatInvocation(ApiExamples::ExDocumentBuilder::FieldResultFormatter::FormatInvocationType formatInvocationType, SharedPtr<System::Object> value,
                         String originalFormat, String newValue)
            : pr_FormatInvocationType(((ApiExamples::ExDocumentBuilder::FieldResultFormatter::FormatInvocationType)0))
        {
            pr_Value = value;
            pr_FormatInvocationType = formatInvocationType;
            pr_OriginalFormat = originalFormat;
            pr_NewValue = newValue;
        }

    private:
        ApiExamples::ExDocumentBuilder::FieldResultFormatter::FormatInvocationType pr_FormatInvocationType;
        SharedPtr<System::Object> pr_Value;
        String pr_OriginalFormat;
        String pr_NewValue;
    };

public:
    FieldResultFormatter(String numberFormat, String dateFormat, String generalFormat)
        : mFormatInvocations(MakeObject<System::Collections::Generic::List<SharedPtr<ExDocumentBuilder::FieldResultFormatter::FormatInvocation>>>())
    {
        mNumberFormat = numberFormat;
        mDateFormat = dateFormat;
        mGeneralFormat = generalFormat;
    }

    String FormatNumeric(double value, String format) override
    {
        if (String::IsNullOrEmpty(mNumberFormat))
        {
            return nullptr;
        }

        String newValue = String::Format(mNumberFormat, value);
        get_FormatInvocations()->Add(MakeObject<ExDocumentBuilder::FieldResultFormatter::FormatInvocation>(
            ApiExamples::ExDocumentBuilder::FieldResultFormatter::FormatInvocationType::Numeric, System::ObjectExt::Box<double>(value), format, newValue));
        return newValue;
    }

    String FormatDateTime(System::DateTime value, String format, CalendarType calendarType) override
    {
        if (String::IsNullOrEmpty(mDateFormat))
        {
            return nullptr;
        }

        String newValue = String::Format(mDateFormat, value);
        get_FormatInvocations()->Add(MakeObject<ExDocumentBuilder::FieldResultFormatter::FormatInvocation>(
            ApiExamples::ExDocumentBuilder::FieldResultFormatter::FormatInvocationType::DateTime,
            System::ObjectExt::Box<String>(String::Format(u"{0} ({1})", value, calendarType)), format, newValue));
        return newValue;
    }

    String Format(String value, GeneralFormat format) override
    {
        return Format(System::ObjectExt::Box<String>(value), format);
    }

    String Format(double value, GeneralFormat format) override
    {
        return Format(System::ObjectExt::Box<double>(value), format);
    }

    int CountFormatInvocations(ExDocumentBuilder::FieldResultFormatter::FormatInvocationType formatInvocationType)
    {
        if (formatInvocationType == ApiExamples::ExDocumentBuilder::FieldResultFormatter::FormatInvocationType::All)
        {
            return get_FormatInvocations()->get_Count();
        }

        std::function<bool(SharedPtr<FormatInvocation> f)> hasValidFormatInvocationType = [&formatInvocationType](SharedPtr<FormatInvocation> f)
        {
            return f->get_FormatInvocationType() == formatInvocationType;
        };

        return get_FormatInvocations()->LINQ_Count(hasValidFormatInvocationType);
    }

    void PrintFormatInvocations()
    {
        for (const auto& f : get_FormatInvocations())
        {
            std::cout << (String::Format(u"Invocation type:\t{0}\n", f->get_FormatInvocationType()) +
                          String::Format(u"\tOriginal value:\t\t{0}\n", f->get_Value()) +
                          String::Format(u"\tOriginal format:\t{0}\n", f->get_OriginalFormat()) +
                          String::Format(u"\tNew value:\t\t\t{0}\n", f->get_NewValue()))
                      << std::endl;
        }
    }

private:
    String mNumberFormat;
    String mDateFormat;
    String mGeneralFormat;
    SharedPtr<System::Collections::Generic::List<SharedPtr<ExDocumentBuilder::FieldResultFormatter::FormatInvocation>>> mFormatInvocations;

    SharedPtr<System::Collections::Generic::List<SharedPtr<ExDocumentBuilder::FieldResultFormatter::FormatInvocation>>> get_FormatInvocations()
    {
        return mFormatInvocations;
    }

    String Format(SharedPtr<System::Object> value, GeneralFormat format)
    {
        if (String::IsNullOrEmpty(mGeneralFormat))
        {
            return nullptr;
        }

        String newValue = String::Format(mGeneralFormat, value);
        get_FormatInvocations()->Add(MakeObject<ExDocumentBuilder::FieldResultFormatter::FormatInvocation>(
            ApiExamples::ExDocumentBuilder::FieldResultFormatter::FormatInvocationType::General, value, System::ObjectExt::ToString(format), newValue));
        return newValue;
    }
};

Como avaliar a condição IF

Se você quiser avaliar a condição IF após mail merge, você pode usar o método EvaluateCondition que retorna imediatamente o resultado da avaliação da expressão.

O exemplo de código a seguir mostra como usar esse método:

//For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-C
auto builder = MakeObject<DocumentBuilder>();

auto field = System::DynamicCast<FieldIf>(builder->InsertField(u"IF 1 = 1", nullptr));
FieldIfComparisonResult actualResult = field->EvaluateCondition();

std::cout << System::EnumGetName(actualResult) << std::endl;

Como aplicar a formatação personalizada ao campo de tempo

Por padrão, Aspose.Words atualiza o campo TIME com o formato de tempo curto da cultura atual. Se pretender formatar o campo TIME de acordo com o seu requisito, pode fazê-lo implementando a interface IFieldUpdateCultureProvider.

Os exemplos de código a seguir mostram como aplicar a formatação personalizada ao campo TIME:

//For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-C
auto doc = MakeObject<Document>();
auto builder = MakeObject<DocumentBuilder>(doc);

builder->InsertField(FieldType::FieldTime, true);

doc->get_FieldOptions()->set_FieldUpdateCultureSource(FieldUpdateCultureSource::FieldCode);
doc->get_FieldOptions()->set_FieldUpdateCultureProvider(MakeObject<WorkingWithFields::FieldUpdateCultureProvider>());

doc->Save(ArtifactsDir + u"WorkingWithFields.FieldUpdateCulture.pdf");

//For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-C
class FieldUpdateCultureProvider : public IFieldUpdateCultureProvider
{
public:
    SharedPtr<System::Globalization::CultureInfo> GetCulture(String name, SharedPtr<Field> field) override
    {
        ASPOSE_UNUSED(field);
        if (name == u"ru-RU")
        {
            auto culture = MakeObject<System::Globalization::CultureInfo>(name, false);
            SharedPtr<System::Globalization::DateTimeFormatInfo> format = culture->get_DateTimeFormat();
            format->set_MonthNames(MakeArray<String>({u"месяц 1", u"месяц 2", u"месяц 3", u"месяц 4", u"месяц 5", u"месяц 6", u"месяц 7", u"месяц 8",
                                                      u"месяц 9", u"месяц 10", u"месяц 11", u"месяц 12", u""}));
            format->set_MonthGenitiveNames(format->get_MonthNames());
            format->set_AbbreviatedMonthNames(MakeArray<String>(
                {u"мес 1", u"мес 2", u"мес 3", u"мес 4", u"мес 5", u"мес 6", u"мес 7", u"мес 8", u"мес 9", u"мес 10", u"мес 11", u"мес 12", u""}));
            format->set_AbbreviatedMonthGenitiveNames(format->get_AbbreviatedMonthNames());
            format->set_DayNames(MakeArray<String>(
                {u"день недели 7", u"день недели 1", u"день недели 2", u"день недели 3", u"день недели 4", u"день недели 5", u"день недели 6"}));
            format->set_AbbreviatedDayNames(MakeArray<String>({u"день 7", u"день 1", u"день 2", u"день 3", u"день 4", u"день 5", u"день 6"}));
            format->set_ShortestDayNames(MakeArray<String>({u"д7", u"д1", u"д2", u"д3", u"д4", u"д5", u"д6"}));
            format->set_AMDesignator(u"До полудня");
            format->set_PMDesignator(u"После полудня");
            const String pattern = u"yyyy MM (MMMM) dd (dddd) hh:mm:ss tt";
            format->set_LongDatePattern(pattern);
            format->set_LongTimePattern(pattern);
            format->set_ShortDatePattern(pattern);
            format->set_ShortTimePattern(pattern);
            return culture;
        }
        else if (name == u"en-US")
        {
            return MakeObject<System::Globalization::CultureInfo>(name, false);
        }
        else
        {
            return nullptr;
        }
    }
};