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using System.Text;
using System.Drawing;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace PowerAsp.NET.Controls
{
[ToolboxBitmap(typeof(NumberEditor),"PowerAsp.NET.Controls.NumberEditor.bmp")]
public class NumberEditor:BaseEditor
{
private const string SCP_NUMBER_ONLY_SCRIPT_ID="{29FD7A41-49FD-4fc4-AFA9-6A0B875A1A51}";
private const string SCP_NUMBER_ONLY_HOOK="return NumberEditor_KeyPress_Handle(this);";
private const string SCP_NUMBER_ONLY_SCRIPT=
"<script language=\"JavaScript1.2\">\nfunction NumberEditor_KeyPress_Handle(ctrl)\n{{\n"+
"if (event.keyCode == 13)\n return true;\n if (event.keyCode < 48 || event.keyCode > 57)\n return false;\n else\n return true;\n}}"+
"</script>";
//rending number-limit javaScript.
private void RenderJavaScript()
{
if(!Page.IsClientScriptBlockRegistered(SCP_NUMBER_ONLY_SCRIPT_ID)) Page.RegisterClientScriptBlock(SCP_NUMBER_ONLY_SCRIPT_ID,string.Format(SCP_NUMBER_ONLY_SCRIPT,base.ID));
}
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
base.AddAttributesToRender(writer);
writer.AddAttribute("OnKeyPress",SCP_NUMBER_ONLY_HOOK);
}
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender (e);
RenderJavaScript();
}
public NumberEditor():base()
{
}
}
}
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