//
// System.Web.UI.WebControls.MultiView.cs
//
// Authors:
// Lluis Sanchez Gual (lluis@novell.com)
//
// (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
#if NET_2_0
using System;
using System.Globalization;
using System.Web;
using System.Web.UI;
using System.ComponentModel;
namespace System.Web.UI.WebControls{
// [ControlBuilder (typeof(MultiViewControlBuilder)]
[Designer ("System.Web.UI.Design.WebControls.MultiViewDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
[ToolboxData ("<{0}:MultiView runat=\"server\"></{0}:MultiView>")]
#if NET_2_0
[ParseChildren (typeof(View))]
#else
[ParseChildren (false)]
#endif
[DefaultEvent ("ActiveViewChanged")]
public class MultiView: Control
{
public static readonly string NextViewCommandName = "NextView";
public static readonly string PreviousViewCommandName = "PrevView";
public static readonly string SwitchViewByIDCommandName = "SwitchViewByID";
public static readonly string SwitchViewByIndexCommandName = "SwitchViewByIndex";
static readonly object ActiveViewChangedEvent = new object();
int viewIndex = -1;
int initialIndex = -1;
public event EventHandler ActiveViewChanged {
add { Events.AddHandler (ActiveViewChangedEvent, value); }
remove { Events.RemoveHandler (ActiveViewChangedEvent, value); }
}
protected override void AddParsedSubObject (object ob)
{
if (ob is View)
Controls.Add (ob as View);
// LAMESPEC: msdn talks that only View contorls are allowed, for others controls HttpException should be thrown
// but actually, aspx praser adds LiteralControl controls.
//else
// throw new HttpException ("MultiView cannot have children of type 'Control'. It can only have children of type View.");
}
protected override ControlCollection CreateControlCollection ()
{
return new ViewCollection (this);
}
public View GetActiveView ()
{
if (viewIndex < 0 || viewIndex >= Controls.Count)
throw new HttpException ("The ActiveViewIndex is not set to a valid View control");
return Controls [viewIndex] as View;
}
public void SetActiveView (View view)
{
int i = Controls.IndexOf (view);
if (i == -1)
throw new HttpException ("The provided view is not contained in the MultiView control.");
ActiveViewIndex = i;
}
[DefaultValue (-1)]
public virtual int ActiveViewIndex {
get
{
if (Controls.Count == 0)
return initialIndex;
return viewIndex;
}
set
{
if (Controls.Count == 0) {
initialIndex = value;
return;
}
if (value < -1 || value >= Controls.Count)
throw new ArgumentOutOfRangeException ();
if (viewIndex != -1)
((View)Controls [viewIndex]).NotifyActivation (false);
viewIndex = value;
if (viewIndex != -1)
((View)Controls [viewIndex]).NotifyActivation (true);
UpdateViewVisibility ();
OnActiveViewChanged (EventArgs.Empty);
}
}
[Browsable (true)]
public virtual new bool EnableTheming
{
get { return base.EnableTheming; }
set { base.EnableTheming = value; }
}
[PersistenceMode (PersistenceMode.InnerDefaultProperty)]
[Browsable (false)]
public virtual ViewCollection Views {
get { return Controls as ViewCollection; }
}
protected override bool OnBubbleEvent (object source, EventArgs e)
{
CommandEventArgs ca = e as CommandEventArgs;
if (ca != null) {
switch (ca.CommandName) {
case "NextView":
if (viewIndex < Controls.Count - 1 && Controls.Count > 0)
ActiveViewIndex = viewIndex + 1;
break;
case "PrevView":
if (viewIndex > 0)
ActiveViewIndex = viewIndex - 1;
break;
case "SwitchViewByID":
foreach (View v in Controls)
if (v.ID == (string)ca.CommandArgument) {
SetActiveView (v);
break;
}
break;
case "SwitchViewByIndex":
int i = (int) Convert.ChangeType (ca.CommandArgument, typeof(int));
ActiveViewIndex = i;
break;
}
}
return false;
}
protected internal override void OnInit (EventArgs e)
{
Page.RegisterRequiresControlState (this);
if (initialIndex != -1) {
ActiveViewIndex = initialIndex;
initialIndex = -1;
}
base.OnInit (e);
}
void UpdateViewVisibility ()
{
for (int n=0; n<Views.Count; n++)
Views [n].VisibleInternal = (n == viewIndex);
}
protected internal override void RemovedControl (Control ctl)
{
if (viewIndex >= Controls.Count) {
viewIndex = Controls.Count - 1;
UpdateViewVisibility ();
}
base.RemovedControl (ctl);
}
protected internal override void LoadControlState (object state)
{
if (state != null) {
viewIndex = (int)state;
UpdateViewVisibility ();
}
else viewIndex = -1;
}
protected internal override object SaveControlState ()
{
if (viewIndex != -1) return viewIndex;
else return null;
}
protected virtual void OnActiveViewChanged (EventArgs e)
{
if (Events != null) {
EventHandler eh = (EventHandler) Events [ActiveViewChangedEvent];
if (eh != null) eh (this, e);
}
}
protected internal override void Render (HtmlTextWriter writer)
{
if ((Controls.Count == 0) && (initialIndex != -1))
viewIndex = initialIndex;
if (viewIndex != -1)
GetActiveView ().Render (writer);
}
}
}
#endif
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