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VAR.WebFormsCore: Implementation of controls

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This commit is contained in:
Valeriano A.R.
2021-06-26 03:13:50 +02:00
parent 307334fdfb
commit 251cacdb00
10 changed files with 170 additions and 33 deletions
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12
VAR.WebFormsCore/Code/ExtensionMethods.cs
View File

@@ -9,9 +9,19 @@ namespace VAR.WebFormsCore.Code
public static string GetRequestParm(this HttpContext context, string parm)
{
if (context.Request.Method == "POST")
{
foreach (string key in context.Request.Form.Keys)
{
if (string.IsNullOrEmpty(key) == false && key == parm)
{
return context.Request.Form[key];
}
}
}
foreach (string key in context.Request.Query.Keys)
{
if (string.IsNullOrEmpty(key) == false && key.EndsWith(parm))
if (string.IsNullOrEmpty(key) == false && key == parm)
{
return context.Request.Query[key];
}

98
VAR.WebFormsCore/Code/ServerHelpers.cs
View File

@@ -1,4 +1,5 @@
using System.IO;
using System.Globalization;
using System.Text;
namespace VAR.WebFormsCore.Code
{
@@ -12,8 +13,101 @@ namespace VAR.WebFormsCore.Code
public static string MapContentPath(string path)
{
string mappedPath = Path.Combine(_contentRoot, path);
string mappedPath = string.Concat(_contentRoot, "/", path);
return mappedPath;
}
public static string HtmlEncode(string text)
{
if (string.IsNullOrEmpty(text)) { return text; }
StringBuilder sbResult = new();
for (int i = 0; i < text.Length; i++)
{
char ch = text[i];
if (ch == '<')
{
sbResult.Append("&lt;");
}
else if (ch == '>')
{
sbResult.Append("&gt;");
}
else if (ch == '"')
{
sbResult.Append("&quot;");
}
else if (ch == '\'')
{
sbResult.Append("&#39;");
}
else if (ch == '&')
{
sbResult.Append("&amp;");
}
else if (ch > 127)
{
sbResult.Append("&#");
sbResult.Append(((int)ch).ToString(NumberFormatInfo.InvariantInfo));
sbResult.Append(';');
}
else
{
sbResult.Append(ch);
}
}
return sbResult.ToString();
}
public static string UrlEncode(string text)
{
if (string.IsNullOrEmpty(text)) { return text; }
StringBuilder sbResult = new();
for (int i = 0; i < text.Length; i++)
{
char ch = text[i];
if (ch == ' ')
{
sbResult.Append('+');
}
else if (IsUrlSafe(ch) == false)
{
sbResult.AppendFormat("%{0:X02}", ch);
}
else
{
sbResult.Append(ch);
}
}
return sbResult.ToString();
}
public static bool IsUrlSafe(char ch)
{
if (
(ch >= 'a' && ch <= 'z') ||
(ch >= 'A' && ch <= 'Z') ||
(ch >= '0' && ch <= '9') ||
ch == '-' ||
ch == '_' ||
ch == '.' ||
ch == '!' ||
ch == '*' ||
ch == '(' ||
ch == ')' ||
false)
{
return true;
}
return false;
}
}
}

13
VAR.WebFormsCore/Controls/Button.cs
View File

@@ -3,7 +3,6 @@ using System.IO;
namespace VAR.WebFormsCore.Controls
{
// TODO: Implememnt control
public class Button : Control, IReceivePostbackEvent
{
public Button()
@@ -11,17 +10,21 @@ namespace VAR.WebFormsCore.Controls
CssClass = "button";
}
public string Text { get; set; }
public string CommandArgument { get; set; }
private string _text = string.Empty;
public string Text { get { return _text; } set { _text = value; } }
private string _commandArgument = string.Empty;
public string CommandArgument { get { return _commandArgument; } set { _commandArgument = value; } }
public event EventHandler Click;
public override void Render(TextWriter textWriter)
{
textWriter.Write("<input type=\"submit\" ");
RenderAttributes(textWriter);
RenderAttribute(textWriter, "value", Text);
RenderAttribute(textWriter, "value", _text);
textWriter.Write(">");
base.Render(textWriter);

3
VAR.WebFormsCore/Controls/Control.cs
View File

@@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.IO;
using System.Text;
using VAR.WebFormsCore.Code;
using VAR.WebFormsCore.Pages;
namespace VAR.WebFormsCore.Controls
@@ -172,7 +173,7 @@ namespace VAR.WebFormsCore.Controls
public void RenderAttribute(TextWriter textWriter, string key, string value)
{
textWriter.Write(" {0}=\"{1}\"", key, value);
textWriter.Write(" {0}=\"{1}\"", key, ServerHelpers.HtmlEncode(value));
}
protected void RenderAttributes(TextWriter textWriter, bool forceId = false)

7
VAR.WebFormsCore/Controls/HiddenField.cs
View File

@@ -2,10 +2,11 @@
namespace VAR.WebFormsCore.Controls
{
// TODO: Implememnt control
public class HiddenField : Control
{
public string Value { get; set; }
private string _value = string.Empty;
public string Value { get { return _value; } set { _value = value; } }
protected override void Process()
{
@@ -21,7 +22,7 @@ namespace VAR.WebFormsCore.Controls
RenderAttributes(textWriter, forceId: true);
if (string.IsNullOrEmpty(Value) == false)
{
textWriter.Write(" value=\"{0}\"", Value);
RenderAttribute(textWriter, "value", _value);
}
textWriter.Write(">");
textWriter.Write("</input>");

26
VAR.WebFormsCore/Controls/HtmlForm.cs
View File

@@ -1,8 +1,11 @@
using System.IO;
using System.Collections.Generic;
using System.IO;
using System.Text;
using Microsoft.Extensions.Primitives;
using VAR.WebFormsCore.Code;
namespace VAR.WebFormsCore.Controls
{
// TODO: Implment this control
public class HtmlForm : Control
{
private string _method = "post";
@@ -14,12 +17,29 @@ namespace VAR.WebFormsCore.Controls
textWriter.Write("<form ");
RenderAttributes(textWriter);
RenderAttribute(textWriter, "method", _method);
RenderAttribute(textWriter, "action", Page.GetType().Name);
RenderAttribute(textWriter, "action", GetAction());
textWriter.Write(">");
base.Render(textWriter);
textWriter.Write("</form>");
}
private string GetAction()
{
StringBuilder sbAction = new();
sbAction.Append(Page.GetType().Name);
if (Page.Context.Request.Query.Count > 0)
{
sbAction.Append('?');
foreach (KeyValuePair<string, StringValues> queryParam in Page.Context.Request.Query)
{
sbAction.AppendFormat("&{0}={1}", ServerHelpers.UrlEncode(queryParam.Key), ServerHelpers.UrlEncode(queryParam.Value[0]));
}
}
return sbAction.ToString();
}
}
}

14
VAR.WebFormsCore/Controls/Label.cs
View File

@@ -1,25 +1,23 @@
using System.IO;
using VAR.WebFormsCore.Code;
namespace VAR.WebFormsCore.Controls
{
// TODO: Implememnt control
public class Label : Control
{
#region Declarations
#region Properties
private string _tagName = "span";
#endregion Declarations
#region Properties
public string Tag
{
get { return _tagName; }
set { _tagName = value; }
}
public string Text { get; set; }
private string _text = string.Empty;
public string Text { get { return _text; } set { _text = value; } }
#endregion Properties
@@ -31,7 +29,7 @@ namespace VAR.WebFormsCore.Controls
RenderAttributes(textWriter);
textWriter.Write(">");
textWriter.Write(Text);
textWriter.Write(ServerHelpers.HtmlEncode(_text));
base.Render(textWriter);

1
VAR.WebFormsCore/Controls/Panel.cs
View File

@@ -1,6 +1,5 @@
namespace VAR.WebFormsCore.Controls
{
// TODO: Implememnt control
public class Panel : HtmlGenericControl, INamingContainer
{
public Panel() : base("div") { }

18
VAR.WebFormsCore/Controls/TextBox.cs
View File

@@ -1,11 +1,13 @@
using System.IO;
using VAR.WebFormsCore.Code;
namespace VAR.WebFormsCore.Controls
{
// TODO: Implememnt control
public class TextBox : Control
{
public string Text { get; set; }
private string _text = string.Empty;
public string Text { get { return _text; } set { _text = value; } }
public TextBoxMode TextMode { get; set; } = TextBoxMode.Normal;
@@ -13,7 +15,7 @@ namespace VAR.WebFormsCore.Controls
{
if (Page.IsPostBack && Page.Context.Request.Form.ContainsKey(ClientID))
{
Text = Page.Context.Request.Form[ClientID];
_text = Page.Context.Request.Form[ClientID];
}
}
@@ -21,11 +23,11 @@ namespace VAR.WebFormsCore.Controls
{
if (TextMode == TextBoxMode.MultiLine)
{
textWriter.Write("<textare ");
textWriter.Write("<textarea ");
RenderAttributes(textWriter, forceId: true);
textWriter.Write(">");
textWriter.Write(Text);
textWriter.Write("</textare>");
textWriter.Write(ServerHelpers.HtmlEncode(_text));
textWriter.Write("</textarea>");
}
else if (TextMode == TextBoxMode.Normal)
{
@@ -33,7 +35,7 @@ namespace VAR.WebFormsCore.Controls
RenderAttributes(textWriter, forceId: true);
if (string.IsNullOrEmpty(Text) == false)
{
RenderAttribute(textWriter, "value", Text);
RenderAttribute(textWriter, "value", _text);
}
textWriter.Write(">");
textWriter.Write("</input>");
@@ -44,7 +46,7 @@ namespace VAR.WebFormsCore.Controls
RenderAttributes(textWriter, forceId: true);
if (string.IsNullOrEmpty(Text) == false)
{
RenderAttribute(textWriter, "value", Text);
RenderAttribute(textWriter, "value", _text);
}
textWriter.Write(">");
textWriter.Write("</input>");

11
VAR.WebFormsCore/Pages/Page.cs
View File

@@ -6,7 +6,6 @@ using VAR.WebFormsCore.Controls;
namespace VAR.WebFormsCore.Pages
{
// TODO: Implement Page
public class Page : Control, IHttpHandler
{
public string Title { get; set; }
@@ -26,8 +25,13 @@ namespace VAR.WebFormsCore.Pages
}
OnPreInit();
if (context.Response.HasStarted) { return; }
OnInit();
if (context.Response.HasStarted) { return; }
OnLoad();
if (context.Response.HasStarted) { return; }
if (_isPostBack)
{
@@ -38,12 +42,17 @@ namespace VAR.WebFormsCore.Pages
if (context.Request.Form.ContainsKey(clientID))
{
(control as IReceivePostbackEvent).ReceivePostBack();
if (context.Response.HasStarted) { return; }
}
}
}
OnPreRender();
if (context.Response.HasStarted) { return; }
Render(stringWriter);
if (context.Response.HasStarted) { return; }
context.Response.Headers.Add("Content-Type", "text/html");
Context.Response.WriteAsync(stringWriter.ToString());
}