133 lines
4.5 KiB
C#
133 lines
4.5 KiB
C#
#region PDFsharp - A .NET library for processing PDF
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//
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// Authors:
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// Stefan Lange
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//
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// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.pdfsharp.com
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// http://sourceforge.net/projects/pdfsharp
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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namespace PdfSharp.Pdf.AcroForms
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{
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/// <summary>
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/// Represents the radio button field.
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/// </summary>
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public sealed class PdfRadioButtonField : PdfButtonField
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{
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/// <summary>
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/// Initializes a new instance of PdfRadioButtonField.
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/// </summary>
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internal PdfRadioButtonField(PdfDocument document)
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: base(document)
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{
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_document = document;
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}
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internal PdfRadioButtonField(PdfDictionary dict)
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: base(dict)
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{ }
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/// <summary>
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/// Gets or sets the index of the selected radio button in a radio button group.
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/// </summary>
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public int SelectedIndex
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{
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get
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{
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string value = Elements.GetString(Keys.V);
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return IndexInOptStrings(value);
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}
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set
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{
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PdfArray opt = Elements[Keys.Opt] as PdfArray;
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if (opt == null)
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opt = Elements[Keys.Kids] as PdfArray;
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if (opt != null)
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{
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int count = opt.Elements.Count;
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if (value < 0 || value >= count)
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throw new ArgumentOutOfRangeException("value");
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Elements.SetName(Keys.V, opt.Elements[value].ToString());
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}
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}
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}
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int IndexInOptStrings(string value)
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{
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PdfArray opt = Elements[Keys.Opt] as PdfArray;
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if (opt != null)
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{
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int count = opt.Elements.Count;
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for (int idx = 0; idx < count; idx++)
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{
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PdfItem item = opt.Elements[idx];
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if (item is PdfString)
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{
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if (item.ToString() == value)
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return idx;
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}
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}
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}
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return -1;
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}
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/// <summary>
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/// Predefined keys of this dictionary.
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/// The description comes from PDF 1.4 Reference.
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/// </summary>
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public new class Keys : PdfButtonField.Keys
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{
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/// <summary>
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/// (Optional; inheritable; PDF 1.4) An array of text strings to be used in
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/// place of the V entries for the values of the widget annotations representing
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/// the individual radio buttons. Each element in the array represents
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/// the export value of the corresponding widget annotation in the
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/// Kids array of the radio button field.
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/// </summary>
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[KeyInfo(KeyType.Array | KeyType.Optional)]
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public const string Opt = "/Opt";
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/// <summary>
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/// Gets the KeysMeta for these keys.
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/// </summary>
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internal static DictionaryMeta Meta
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{
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get { return _meta ?? (_meta = CreateMeta(typeof(Keys))); }
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}
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static DictionaryMeta _meta;
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}
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/// <summary>
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/// Gets the KeysMeta of this dictionary type.
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/// </summary>
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internal override DictionaryMeta Meta
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{
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get { return Keys.Meta; }
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}
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}
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}
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