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| using System;
using System.ComponentModel;
using System.Drawing;
using System.Globalization;
using System.Security.Permissions;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace DayPilot.Web.UI
{
[PersistChildren(false)]
[ParseChildren(true)]
[Designer(typeof(MonthPickerDesigner))]
[DefaultEvent("SelectionChanged")]
[ToolboxBitmap(typeof(DropDownList))]
[AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal), AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public class MonthPicker : Control, INamingContainer
{
public DropDownList dropDownMonth;
public DropDownList dropDownYear;
public event EventHandler SelectionChanged;
protected override void CreateChildControls()
{
dropDownMonth = new DropDownList();
dropDownMonth.ID = "Month";
fillMonthNames();
dropDownMonth.SelectedValue = DateTime.Today.Month.ToString();
dropDownMonth.SelectedIndexChanged += new EventHandler(dropDownMonth_SelectedIndexChanged);
Controls.Add(dropDownMonth);
Controls.Add(new LiteralControl(" "));
dropDownYear = new DropDownList();
dropDownYear.ID = "Year";
fillYearNames();
dropDownYear.SelectedValue = DateTime.Today.Year.ToString();
dropDownYear.SelectedIndexChanged += new EventHandler(dropDownYear_SelectedIndexChanged);
Controls.Add(dropDownYear);
updateChildren();
}
void dropDownYear_SelectedIndexChanged(object sender, EventArgs e)
{
updateStartDate();
OnSelectionChanged();
}
void dropDownMonth_SelectedIndexChanged(object sender, EventArgs e)
{
updateStartDate();
OnSelectionChanged();
}
void updateChildren()
{
EnsureChildControls();
dropDownMonth.SelectedValue = StartDate.Month.ToString();
dropDownYear.SelectedValue = StartDate.Year.ToString();
dropDownYear.AutoPostBack = AutoPostBack;
dropDownMonth.AutoPostBack = AutoPostBack;
dropDownYear.Enabled = Enabled;
dropDownMonth.Enabled = Enabled;
dropDownMonth.Attributes.Add("onchange", OnClientSelectionChanged);
dropDownYear.Attributes.Add("onchange", OnClientSelectionChanged);
}
void updateStartDate()
{
StartDate = new DateTime(Year, Month, 1);
}
private void OnSelectionChanged()
{
if (SelectionChanged != null)
{
SelectionChanged(this, new EventArgs());
}
}
protected override void Render(HtmlTextWriter writer)
{
writer.AddAttribute("id", ClientID);
if (!String.IsNullOrEmpty(CssClass))
{
writer.AddAttribute("class", CssClass);
}
writer.RenderBeginTag("span");
RenderChildren(writer);
writer.RenderEndTag();
}
public void Recreate()
{
ChildControlsCreated = false;
updateChildren();
}
private void fillMonthNames()
{
DateTime start = new DateTime(2007, 1, 1); // Sunday
for (int i = 0; i < 12; i++)
{
string name;
if (String.IsNullOrEmpty(Culture))
{
name = start.AddMonths(i).ToString(FormatMonth);
}
else
{
name = start.AddMonths(i).ToString(FormatMonth, new CultureInfo(Culture));
}
string number = (i + 1).ToString();
dropDownMonth.Items.Add(new ListItem(name, number));
}
}
private void fillYearNames()
{
for (int i = YearStart; i <= YearEnd; i++)
{
dropDownYear.Items.Add(new ListItem(yearToString(i), i.ToString()));
}
}
private string yearToString(int year)
{
DateTime dt = new DateTime(year, 1, 1);
return dt.ToString(FormatYear);
}
[Description("First day of the selected month. Use this property to change the selection.")]
[Category("Behavior")]
public DateTime StartDate
{
get
{
if (ViewState["StartDate"] == null)
{
return new DateTime(DateTime.Today.Year, DateTime.Today.Month, 1);
}
return (DateTime)ViewState["StartDate"];
}
set
{
ViewState["StartDate"] = new DateTime(value.Year, value.Month, 1);
updateChildren();
}
}
[Browsable(false)]
public DateTime EndDate
{
get
{
return StartDate.AddMonths(1);
}
}
[Browsable(false)]
public int Month
{
get
{
return Convert.ToInt32(dropDownMonth.SelectedValue);
}
}
[Browsable(false)]
public int Year
{
get
{
return Convert.ToInt32(dropDownYear.SelectedValue);
}
}
[Description("Format of the values in the year DropDownList (use yy or yyyy).")]
[Category("Appearance")]
[DefaultValue("yyyy")]
public string FormatYear
{
get
{
if (ViewState["FormatYear"] == null)
{
return "yyyy";
}
return (string) ViewState["FormatYear"];
}
set
{
ViewState["FormatYear"] = value;
}
}
[Description("Format of the values in the month DropDownList (use %M, MM, MMM or MMMM).")]
[Category("Appearance")]
[DefaultValue("MMMM")]
public string FormatMonth
{
get
{
if (ViewState["FormatMonth"] == null)
{
return "MMMM";
}
return (string)ViewState["FormatMonth"];
}
set
{
ViewState["FormatMonth"] = value;
}
}
[Description("First year of the selectable range.")]
[Category("Appearance")]
[DefaultValue(2000)]
public int YearStart
{
get
{
if (ViewState["YearStart"] == null)
{
return 2000;
}
return (int)ViewState["YearStart"];
}
set
{
ViewState["YearStart"] = value;
}
}
[Description("Last year of the selectable range.")]
[Category("Appearance")]
[DefaultValue(2020)]
public int YearEnd
{
get
{
if (ViewState["YearEnd"] == null)
{
return 2020;
}
return (int)ViewState["YearEnd"];
}
set
{
ViewState["YearEnd"] = value;
}
}
[Category("Behavior")]
[Description("Automatically postback to the server when the selection is changed.")]
[DefaultValue(false)]
public bool AutoPostBack
{
get
{
if (ViewState["AutoPostBack"] == null)
{
return false;
}
return (bool) ViewState["AutoPostBack"];
}
set
{
ViewState["AutoPostBack"] = value;
updateChildren();
}
}
[Category("Behavior")]
[Description("Enabled state of the control.")]
[DefaultValue(true)]
public bool Enabled
{
get
{
if (ViewState["Enabled"] == null)
{
return true;
}
return (bool)ViewState["Enabled"];
}
set
{
ViewState["Enabled"] = value;
updateChildren();
}
}
[Description("CSS class of the control.")]
[Category("Appearance")]
[DefaultValue("")]
public string CssClass
{
get
{
if (ViewState["CssClass"] == null)
{
return String.Empty;
}
return (string)ViewState["CssClass"];
}
set
{
ViewState["CssClass"] = value;
}
}
[Description("JavaScript code to be executed on the client side when the selection is changed.")]
[Category("Behavior")]
public string OnClientSelectionChanged
{
get
{
if (ViewState["OnClientSelectionChanged"] == null)
{
return String.Empty;
}
return (string)ViewState["OnClientSelectionChanged"];
}
set
{
ViewState["OnClientSelectionChanged"] = value;
updateChildren();
}
}
[Description("Determines the language of the month list. If empty, it uses Page.Culture value.")]
[DefaultValue("")]
[Category("Appearance")]
public string Culture
{
get
{
if (ViewState["Culture"] == null)
{
return String.Empty;
}
return (string)ViewState["Culture"];
}
set
{
ViewState["Culture"] = value;
Recreate();
}
}
}
} |
