//
// This code is part of Document Solutions for Word demos.
// Copyright (c) MESCIUS inc. All rights reserved.
//
using System;
using System.Globalization;
using GrapeCity.Documents.Word;
using GrapeCity.Documents.Word.Fields;

namespace DsWordWeb.Demos
{
    // This sample shows how to use the REF field options to add
    // and customize a reference to a bookmarked paragraph elsewhere
    // in the document, either as the paragraph's own list number or
    // as a copy of its text.
    public class RefFieldOpts
    {
        public GcWordDocument CreateDocx()
        {
            var doc = new GcWordDocument();

            doc.Body.AddParagraph("A numbered list of requirements:");

            // A ListTemplate is used to make paragraphs part of a numbered list:
            var listTemplate = doc.ListTemplates.Add(BuiltInListTemplateId.NumberDefault, "reqList");

            // The name of the target bookmark:
            const string bmkName = "reqBookmark";

            Paragraph bookmarkedItem = null;
            for (int i = 1; i <= 5; i++)
            {
                var p = doc.Body.AddParagraph($"Requirement {i}: the system shall do thing #{i}.");
                p.ListFormat.Template = listTemplate;
                p.ListFormat.LevelNumber = 0;
                // This ensures item spacing consistent with MS Word:
                p.Style = doc.Styles[BuiltInStyleId.ListParagraph];
                if (i == 3)
                    bookmarkedItem = p;
            }
            // Bookmark the 3rd requirement so it can be referenced elsewhere:
            bookmarkedItem.GetRange().Bookmarks.Add(bmkName);

            // The RefFieldOptions class provides a convenient strong-typed access
            // to options specific to the 'REF' MS Word field. This one pulls in
            // the bookmarked item's own list number:
            var refByNumber = new RefFieldOptions(doc, bmkName)
            {
                DisplayListNumber = DisplayListNumber.AllLevels,
                Hyperlink = true
            };
            doc.Body.AddParagraph("As specified in item ").AddComplexField(refByNumber)
                .GetRange().Runs.Add(" above, the system shall comply.");

            // This REF pulls in the bookmarked item's text instead, upper-cased:
            var refByText = new RefFieldOptions(doc, bmkName)
            {
                StringStyle = StringStyle.Upper
            };
            doc.Body.AddParagraph("For emphasis: ").AddComplexField(refByText);

            // Update fields using a specific culture:
            doc.UpdateFields(new GrapeCity.Documents.Word.Layout.WordLayoutSettings() { FontCollection = Util.FontCollection, Culture = CultureInfo.GetCultureInfo("en-US") });

            // Done:
            return doc;
        }
    }
}