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Сделал TemplatedListBox

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romtec
2025-09-07 11:28:21 +04:00
parent 3b5d539290
commit de3cb0a461
4 changed files with 310 additions and 0 deletions
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12
WinFormsControlLibrary1/Exceptions/TemplateConfigurationException.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace WinFormsControlLibrary1.Exceptions;
public class TemplateConfigurationException : Exception
{
public TemplateConfigurationException(string message) : base(message) { }
}

37
WinFormsControlLibrary1/TemplatedListBox.Designer.cs generated Normal file
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namespace WinFormsControlLibrary1
{
partial class TemplatedListBox
{
/// <summary>
/// Обязательная переменная конструктора.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Освободить все используемые ресурсы.
/// </summary>
/// <param name="disposing">истинно, если управляемый ресурс должен быть удален; иначе ложно.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Код, автоматически созданный конструктором компонентов
/// <summary>
/// Требуемый метод для поддержки конструктора — не изменяйте
/// содержимое этого метода с помощью редактора кода.
/// </summary>
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
}
#endregion
}
}

141
WinFormsControlLibrary1/TemplatedListBox.cs Normal file
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using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using WinFormsControlLibrary1.Exceptions;
namespace WinFormsControlLibrary1;
public partial class TemplatedListBox : UserControl
{
private readonly ListBox _lb = new();
private string _template = "";
private char _open = '{';
private char _close = '}';
private List<string> _placeholders = new();
private readonly List<object> _items = new();
public event EventHandler? SelectedIndexChanged;
public TemplatedListBox()
{
InitializeComponent();
Controls.Add(_lb);
_lb.SelectedIndexChanged += (_, __) => SelectedIndexChanged?.Invoke(this, EventArgs.Empty);
}
public void SetTemplate(string template, char open = '{', char close = '}')
{
if(string.IsNullOrEmpty(template))
throw new TemplateConfigurationException("Шаблон не должен быть пустым.");
_template = template;
_open = open;
_close = close;
_placeholders = ParsePlaceholders(template, open, close);
if (template[0] == open || template[template.Length - 1] == close)
throw new TemplateConfigurationException("Шаблон не должен начинаться или заканчиваться свойством.");
CheckNoDoubleProperties(template,open, close);
}
public void Clear()
{
_lb.Items.Clear();
_items.Clear();
}
public void AddItem<T>(T item)
{
if (string.IsNullOrEmpty(_template))
throw new TemplateConfigurationException("Сначала вызовите SetTemplate.");
var text = Render(item!);
_lb.Items.Add(text);
_items.Add(text);
}
public T? GetSelected<T>()
{
int id = _lb.SelectedIndex;
if (id < 0 || id >= _items.Count) return default;
return _items[id] is T t ? t : default;
}
private string Render(object obj)
{
var type = obj.GetType();
var sb = new StringBuilder();
int i = 0;
while (i < _template.Length)
{
if (_template[i] == _open)
{
int j = _template.IndexOf(_close, i + 1);
var name = _template.Substring(i + 1, j - i - 1);
string val = GetMemberString(type, obj, name);
sb.Append(val);
i = j + 1;
}
else
{
sb.Append(_template[i]);
i++;
}
}
return sb.ToString();
}
private static string GetMemberString(Type t, object obj, string name)
{
var p = t.GetProperty(name);
if (p != null) return Convert.ToString(p.GetValue(obj)) ?? string.Empty;
var f = t.GetField(name);
if (f != null) return Convert.ToString(f.GetValue(obj)) ?? string.Empty;
return string.Empty;
}
private static List<string> ParsePlaceholders(string template, char open, char close)
{
var list = new List<String>();
int i = 0;
while (i < template.Length)
{
if (template[i] == open)
{
int j = template.IndexOf(close, i + 1);
if (j < 0) throw new TemplateConfigurationException("Несогласованные скобки в шаблоне.");
string name = template.Substring(i + 1, j - i - 1).Trim();
if (string.IsNullOrEmpty(name)) throw new TemplateConfigurationException("Пустое имя свойства в шаблоне.");
list.Add(name);
i = j + 1;
}
else i++;
}
return list;
}
private static void CheckNoDoubleProperties(string template, char open, char close)
{
for (int i = 0; i < template.Length; i++)
{
if (template[i] == close)
{
int k = i + 1;
while (k < template.Length && char.IsWhiteSpace(template[k])) k++;
if (k < template.Length && template[k] == open)
throw new TemplateConfigurationException("В шаблоне не должно идти два свойства подряд без текста между ними.");
}
}
}
}

120
WinFormsControlLibrary1/TemplatedListBox.resx Normal file
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<?xml version="1.0" encoding="utf-8"?>
<root>
<!--
Microsoft ResX Schema
Version 2.0
The primary goals of this format is to allow a simple XML format
that is mostly human readable. The generation and parsing of the
various data types are done through the TypeConverter classes
associated with the data types.
Example:
... ado.net/XML headers & schema ...
<resheader name="resmimetype">text/microsoft-resx</resheader>
<resheader name="version">2.0</resheader>
<resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
<resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
<data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
<data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
<data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
<value>[base64 mime encoded serialized .NET Framework object]</value>
</data>
<data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
<value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
<comment>This is a comment</comment>
</data>
There are any number of "resheader" rows that contain simple
name/value pairs.
Each data row contains a name, and value. The row also contains a
type or mimetype. Type corresponds to a .NET class that support
text/value conversion through the TypeConverter architecture.
Classes that don't support this are serialized and stored with the
mimetype set.
The mimetype is used for serialized objects, and tells the
ResXResourceReader how to depersist the object. This is currently not
extensible. For a given mimetype the value must be set accordingly:
Note - application/x-microsoft.net.object.binary.base64 is the format
that the ResXResourceWriter will generate, however the reader can
read any of the formats listed below.
mimetype: application/x-microsoft.net.object.binary.base64
value : The object must be serialized with
: System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
: and then encoded with base64 encoding.
mimetype: application/x-microsoft.net.object.soap.base64
value : The object must be serialized with
: System.Runtime.Serialization.Formatters.Soap.SoapFormatter
: and then encoded with base64 encoding.
mimetype: application/x-microsoft.net.object.bytearray.base64
value : The object must be serialized into a byte array
: using a System.ComponentModel.TypeConverter
: and then encoded with base64 encoding.
-->
<xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
<xsd:element name="root" msdata:IsDataSet="true">
<xsd:complexType>
<xsd:choice maxOccurs="unbounded">
<xsd:element name="metadata">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="value" type="xsd:string" minOccurs="0" />
</xsd:sequence>
<xsd:attribute name="name" use="required" type="xsd:string" />
<xsd:attribute name="type" type="xsd:string" />
<xsd:attribute name="mimetype" type="xsd:string" />
<xsd:attribute ref="xml:space" />
</xsd:complexType>
</xsd:element>
<xsd:element name="assembly">
<xsd:complexType>
<xsd:attribute name="alias" type="xsd:string" />
<xsd:attribute name="name" type="xsd:string" />
</xsd:complexType>
</xsd:element>
<xsd:element name="data">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
<xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
</xsd:sequence>
<xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
<xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
<xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
<xsd:attribute ref="xml:space" />
</xsd:complexType>
</xsd:element>
<xsd:element name="resheader">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
</xsd:sequence>
<xsd:attribute name="name" type="xsd:string" use="required" />
</xsd:complexType>
</xsd:element>
</xsd:choice>
</xsd:complexType>
</xsd:element>
</xsd:schema>
<resheader name="resmimetype">
<value>text/microsoft-resx</value>
</resheader>
<resheader name="version">
<value>2.0</value>
</resheader>
<resheader name="reader">
<value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
</resheader>
<resheader name="writer">
<value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
</resheader>
</root>