DataTplSequence.cs
//
// This code is part of GrapeCity Documents for Word samples.
// Copyright (c) GrapeCity, Inc. All rights reserved.
//
using System;
using System.IO;
using System.Drawing;
using System.Collections.Generic;
using System.Linq;
using GrapeCity.Documents.Word;

namespace GcWordWeb.Samples
{
    // This sample demonstrates how to use 'sequence' ('seq') and 'follow' formatters 
    // to synchronize two ranges from two different JSON data sources.
    public class DataTplSequence
    {
        public GcWordDocument CreateDocx()
        {
            // The first JSON data source - the sequence master.
            // In this sample we use it to spell sequence numbers.
            // Note that the resulting number of iterations will be the MINIMUM
            // of the lengths of the sequence and follower, so print all oceans
            // we need to provide at least 5 numbers, but more won't hurt:
            var sequence = @"[
                { ""num"": ""First"" },
                { ""num"": ""Second"" },
                { ""num"": ""Third"" },
                { ""num"": ""Fourth"" },
                { ""num"": ""Fifth"" },
                { ""num"": ""Sixth"" },
                { ""num"": ""Seventh"" },
                { ""num"": ""Eights"" },
                { ""num"": ""Ninth"" },
                { ""num"": ""Tenth"" }
            ]";

            var doc = new GcWordDocument();

            // Add the data sources to the data template data sources:
            doc.DataTemplate.DataSources.Add("nums", sequence);
            // The second JSON data source is loaded from oceans.json:
            using (var oceans = File.OpenRead(Path.Combine("Resources", "data", "oceans.json")))
                doc.DataTemplate.DataSources.Add("ds", oceans);

            // Add a list template so that the data is formatted as a list:
            var myListTemplate = doc.ListTemplates.Add(BuiltInListTemplateId.BulletDefault, "myListTemplate");

            // The only paragraph added to the document will print the sequence number
            // fetched from the first data source (the sequence master), and the ocean name
            // fetched from the second data source (the sequence follower):
            var p = doc.Body.Paragraphs.Add("{{#nums}:seq(seq1)}{{nums.num}} -- {{#ds}:follow(seq1)}{{ds.name}}{{/ds}}{{/nums}}", doc.Styles[BuiltInStyleId.ListParagraph]);
            p.ListFormat.Template = myListTemplate;

            // This call expands all data templates in the document,
            // replacing template tags with data (iterating over all data items):
            doc.DataTemplate.Process();

            // Done:
            return doc;
        }
    }
}