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//
// System.Web.UI.WebControls.DataGridPagerStyle.cs
//
// Authors:
// Gaurav Vaish (gvaish@iitk.ac.in)
// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) Gaurav Vaish (2002)
// (C) 2003 Andreas Nahr
//
using System;
using System.ComponentModel;
using System.Web;
using System.Web.UI;
namespace System.Web.UI.WebControls
{
public sealed class DataGridPagerStyle : TableItemStyle
{
DataGrid owner;
private static int MODE = (0x01 << 19);
private static int NEXT_PG_TEXT = (0x01 << 20);
private static int PG_BTN_COUNT = (0x01 << 21);
private static int POSITION = (0x01 << 22);
private static int VISIBLE = (0x01 << 23);
private static int PREV_PG_TEXT = (0x01 << 24);
internal DataGridPagerStyle(DataGrid owner): base()
{
this.owner = owner;
}
internal bool IsPagerOnTop
{
get {
PagerPosition p = Position;
return (p == PagerPosition.Top || p == PagerPosition.TopAndBottom);
}
}
internal bool IsPagerOnBottom
{
get {
PagerPosition p = Position;
return (p == PagerPosition.Bottom || p == PagerPosition.TopAndBottom);
}
}
[DefaultValue (typeof (PagerMode), "NextPrev"), Bindable (true), WebCategory ("Misc")]
[NotifyParentProperty (true)]
[WebSysDescription ("The mode used for displaying multiple pages.")]
public PagerMode Mode
{
get
{
if(IsSet(MODE))
{
return (PagerMode)ViewState["Mode"];
}
return PagerMode.NextPrev;
}
set
{
if(!Enum.IsDefined(typeof(PagerMode), value))
{
throw new ArgumentOutOfRangeException("value");
}
ViewState["Mode"] = value;
Set(MODE);
}
}
[DefaultValue (">"), Bindable (true), WebCategory ("Misc")]
[NotifyParentProperty (true)]
[WebSysDescription ("The text for the 'next page' button.")]
public string NextPageText
{
get
{
if(IsSet(NEXT_PG_TEXT))
{
return (string)ViewState["NextPageText"];
}
return ">";
}
set
{
ViewState["NextPageText"] = value;
Set(NEXT_PG_TEXT);
}
}
[DefaultValue ("<"), Bindable (true), WebCategory ("Misc")]
[NotifyParentProperty (true)]
[WebSysDescription ("The text for the 'previous page' button.")]
public string PrevPageText
{
get
{
if(IsSet(PREV_PG_TEXT))
{
return (string)ViewState["PrevPageText"];
}
return "<";
}
set
{
ViewState["PrevPageText"] = value;
Set(PREV_PG_TEXT);
}
}
[DefaultValue (10), Bindable (true), WebCategory ("Misc")]
[NotifyParentProperty (true)]
[WebSysDescription ("The maximum number of pages to show as direct links.")]
public int PageButtonCount
{
get
{
if(IsSet(PG_BTN_COUNT))
{
return (int)ViewState["PageButtonCount"];
}
return 10;
}
set
{
if (value < 1)
throw new ArgumentOutOfRangeException("value");
ViewState["PageButtonCount"] = value;
Set(PG_BTN_COUNT);
}
}
[DefaultValue (typeof (PagerPosition), "Bottom"), Bindable (true), WebCategory ("Misc")]
[NotifyParentProperty (true)]
[WebSysDescription ("The position for the page display.")]
public PagerPosition Position
{
get
{
if(IsSet(POSITION))
{
return (PagerPosition)ViewState["Position"];
}
return PagerPosition.Bottom;
}
set
{
if(!Enum.IsDefined(typeof(PagerPosition), value))
{
throw new ArgumentException();
}
ViewState["Position"] = value;
Set(POSITION);
}
}
[DefaultValue (true), Bindable (true), WebCategory ("Misc")]
[NotifyParentProperty (true)]
[WebSysDescription ("Determines if paging functionallity is visible to the user.")]
public bool Visible
{
get
{
if(IsSet(VISIBLE))
{
return (bool)ViewState["PagerVisible"];
}
return true;
}
set
{
ViewState["PagerVisible"] = value;
Set(VISIBLE);
owner.OnPagerChanged();
}
}
public override void CopyFrom(Style s)
{
if(s != null && !s.IsEmpty)
{
base.CopyFrom(s);
if(!(s is DataGridPagerStyle)) return;
DataGridPagerStyle from = (DataGridPagerStyle)s;
if(from.IsSet(MODE))
{
Mode = from.Mode;
}
if(from.IsSet(NEXT_PG_TEXT))
{
NextPageText = from.NextPageText;
}
if(from.IsSet(PG_BTN_COUNT))
{
PageButtonCount = from.PageButtonCount;
}
if(from.IsSet(POSITION))
{
Position = from.Position;
}
if(from.IsSet(VISIBLE))
{
Visible = from.Visible;
}
if(from.IsSet(PREV_PG_TEXT))
{
PrevPageText = from.PrevPageText;
}
}
}
public override void MergeWith(Style s)
{
if(s != null && !s.IsEmpty)
{
if(IsEmpty)
{
CopyFrom(s);
return;
}
base.MergeWith(s);
if(!(s is DataGridPagerStyle)) return;
DataGridPagerStyle with = (DataGridPagerStyle)s;
if(with.IsSet(MODE) && !IsSet(MODE))
{
Mode = with.Mode;
}
if(with.IsSet(NEXT_PG_TEXT) && !IsSet(NEXT_PG_TEXT))
{
NextPageText = with.NextPageText;
}
if(with.IsSet(PG_BTN_COUNT) && !IsSet(PG_BTN_COUNT))
{
PageButtonCount = with.PageButtonCount;
}
if(with.IsSet(POSITION) && !IsSet(POSITION))
{
Position = with.Position;
}
if(with.IsSet(VISIBLE) && !IsSet(VISIBLE))
{
Visible = with.Visible;
}
if(with.IsSet(PREV_PG_TEXT) && !IsSet(PREV_PG_TEXT))
{
PrevPageText = with.PrevPageText;
}
}
}
public override void Reset()
{
if(IsSet(MODE))
{
ViewState.Remove("Mode");
}
if(IsSet(NEXT_PG_TEXT))
{
ViewState.Remove("NextPageText");
}
if(IsSet(PG_BTN_COUNT))
{
ViewState.Remove("PageButtonCount");
}
if(IsSet(POSITION))
{
ViewState.Remove("Position");
}
if(IsSet(VISIBLE))
{
ViewState.Remove("PagerVisible");
}
if(IsSet(PREV_PG_TEXT))
{
ViewState.Remove("PrevPageText");
}
base.Reset();
}
}
}
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