-/**\r
- * Namespace: System.Web.UI.WebControls\r
- * Class: ListControl\r
- *\r
- * Author: Gaurav Vaish\r
- * Maintainer: gvaish@iitk.ac.in\r
- * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>\r
- * Implementation: yes\r
- * Status: 100%\r
- *\r
- * (C) Gaurav Vaish (2001)\r
- */\r
+//
+// System.Web.UI.WebControls.ListControl.cs
+//
+// Authors:
+// Gaurav Vaish (gvaish@iitk.ac.in)
+// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
+//
+// (C) Gaurav Vaish (2002)
+// (C) 2003 Andreas Nahr
+//
\r
using System;\r
using System.Collections;\r
-using System.ComponentModel;\r
+using System.ComponentModel;
+using System.ComponentModel.Design;\r
using System.Web;\r
using System.Web.UI;\r
-using System.Web.Utils;\r
+using System.Web.Util;\r
\r
namespace System.Web.UI.WebControls\r
{\r
- public class ListControl: WebControl\r
+ [DefaultEvent("SelectedIndexChanged")]\r
+ #if !NET_1_2
+ [DefaultProperty("DataSource")]
+ #endif\r
+ [Designer ("System.Web.UI.Design.WebControls.ListControlDesigner, " + Consts.AssemblySystem_Design, typeof (IDesigner))]\r
+ [DataBindingHandler("System.Web.UI.Design.ListControlDataBindingHandler, " + Consts.AssemblySystem_Design)]\r
+ [ParseChildren(true, "Items")]\r
+ public abstract class ListControl :
+ #if NET_1_2
+ DataBoundControl
+ #else
+ WebControl
+ #endif\r
{\r
private static readonly object SelectedIndexChangedEvent = new object();\r
-\r
- private object dataSource;\r
+
+ #if !NET_1_2\r
+ private object dataSource;
+ #endif
+ \r
private ListItemCollection items;\r
\r
private int cachedSelectedIndex = -1;\r
- \r
+ private string cachedSelectedValue;
+
+ #if !NET_1_2\r
public ListControl(): base(HtmlTextWriterTag.Select)\r
{\r
- }\r
- \r
+ }
+ #else
+ protected override HtmlTextWriterTag TagKey {
+ get { return HtmlTextWriterTag.Select; }
+ }
+ #endif\r
+
+ [WebCategory ("Action")]
+ [WebSysDescription ("Raised when the selected index entry has changed.")]\r
public event EventHandler SelectedIndexChanged\r
{\r
add\r
Events.RemoveHandler(SelectedIndexChangedEvent, value);\r
}\r
}\r
- \r
+
+ [DefaultValue (false), WebCategory ("Behavior")]
+ [WebSysDescription ("The control automatically posts back after changing the text.")]\r
public virtual bool AutoPostBack\r
{\r
get\r
ViewState["AutoPostBack"] = value;\r
}\r
}\r
- \r
+
+ #if !NET_1_2
+ [DefaultValue (""), WebCategory ("Data")]
+ [WebSysDescription ("The name of the table that is used for binding when a DataSource is specified.")]\r
public virtual string DataMember\r
{\r
get\r
ViewState["DataMember"] = value;\r
}\r
}\r
- \r
+
+
+ [DefaultValue (null), Bindable (true), WebCategory ("Data")]
+ [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
+ [WebSysDescription ("The DataSource that is used for data-binding.")]\r
public virtual object DataSource\r
{\r
get\r
}\r
set\r
{\r
- if(value != null)\r
- {\r
- if(value is IListSource || value is IEnumerable)\r
- {\r
- dataSource = value;\r
- return;\r
- }\r
- }\r
- throw new ArgumentException(/*HttpRuntime.FormatResourceString(ID, "Invalid DataSource Type")*/);\r
+ if(value == null || value is IListSource || value is IEnumerable) {
+ dataSource = value;
+ return;
+ }
+ throw new ArgumentException(HttpRuntime.FormatResourceString(ID, "Invalid DataSource Type"));\r
}\r
- }\r
- \r
+ }
+ #endif\r
+
+ [DefaultValue (""), WebCategory ("Data")]
+ [WebSysDescription ("The field in the datatable that provides the text entry.")]\r
public virtual string DataTextField\r
{\r
get\r
ViewState["DataTextField"] = value;\r
}\r
}\r
- \r
+
+ [DefaultValue (""), WebCategory ("Data")]
+ [WebSysDescription ("Specifies a formatting rule for the texts that are returned.")]\r
public virtual string DataTextFormatString\r
{\r
get\r
ViewState["DataTextFormatString"] = value;\r
}\r
}\r
- \r
+
+ [DefaultValue (""), WebCategory ("Data")]
+ [WebSysDescription ("The field in the datatable that provides the entry value.")]\r
public virtual string DataValueField\r
{\r
get\r
ViewState["DataValueField"] = value;\r
}\r
}\r
- \r
+
+ [DefaultValue (null), MergableProperty (false), WebCategory ("Misc")]
+ [PersistenceMode (PersistenceMode.InnerDefaultProperty)]
+ [WebSysDescription ("A collection of all items contained in this list.")]\r
public virtual ListItemCollection Items\r
{\r
get\r
items = new ListItemCollection();\r
if(IsTrackingViewState)\r
{\r
- //items.TrackViewState();\r
+ items.TrackViewState();\r
}\r
}\r
return items;\r
}\r
}\r
- \r
+
+ [DefaultValue (0), Bindable (true), WebCategory ("Misc")]
+ [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
+ [WebSysDescription ("The index number of the currently selected ListItem.")]\r
public virtual int SelectedIndex\r
{\r
- get\r
- {\r
- object o = ViewState["SelectedIndex"];\r
- if(o!=null)\r
- return (int)o;\r
+ get {\r
+ ListItemCollection items = Items;\r
+ int last = items.Count;\r
+ for (int i = 0; i < last; i++) {\r
+ if (items [i].Selected)\r
+ return i;\r
+ }\r
return -1;\r
}\r
- set\r
- {\r
- if(value < -1 || value > Items.Count)\r
- throw new ArgumentOutOfRangeException();\r
- ViewState["SelectedIndex"] = value;\r
+ set {\r
+ if (value < -1 || value > Items.Count)\r
+ throw new ArgumentOutOfRangeException ();\r
+\r
+ ClearSelection ();\r
+ if (value != -1)\r
+ Items [value].Selected = true;\r
}\r
}\r
- \r
+
+ [DefaultValue (null), WebCategory ("Misc")]
+ [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
+ [WebSysDescription ("The currently selected ListItem.")]\r
public virtual ListItem SelectedItem\r
{\r
get\r
{\r
- if(SelectedIndex > 0)\r
- {\r
- return Items[SelectedIndex];\r
- }\r
- return null;\r
+ int idx = SelectedIndex;\r
+ if (idx < 0)\r
+ return null;\r
+\r
+ return Items [idx];\r
}\r
}\r
\r
+#if NET_1_1
+ [DefaultValue (""), Bindable (true), WebCategory ("Misc")]
+ [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
+ [WebSysDescription ("The value of the currently selected ListItem.")]\r
+ public virtual string SelectedValue {\r
+ get {\r
+ int idx = SelectedIndex;\r
+ if (idx == -1)\r
+ return "";\r
+\r
+ return Items [idx].Value;\r
+ }\r
+\r
+ set {\r
+ ListItem item = null;\r
+\r
+ if (value != null) {\r
+ if (Items.Count > 0) {
+ item = Items.FindByValue (value);
+ if (item == null)
+ throw new ArgumentOutOfRangeException ("value");
+ } else {
+ cachedSelectedValue = value;
+ return;
+ }
+ }\r
+\r
+ ClearSelection ();\r
+ if (item != null)\r
+ item.Selected = true;\r
+ }\r
+ }\r
+#endif\r
+ \r
internal virtual ArrayList SelectedIndices\r
{\r
get\r
for(int i=0; i < Items.Count; i++)\r
{\r
if(Items[i].Selected)\r
- ArrayList.Add(i);\r
+ si.Add(i);\r
}\r
return si;\r
}\r
}\r
- \r
+\r
internal void Select(ArrayList indices)\r
{\r
ClearSelection();\r
- foreach(int index in indices)\r
+ foreach(object intObj in indices)\r
{\r
+ int index = (int)intObj;\r
if(index >= 0 && index < Items.Count)\r
Items[index].Selected = true;\r
}\r
Items[i].Selected = false;\r
}\r
}\r
- \r
+\r
protected override void LoadViewState(object savedState)\r
{\r
//Order: BaseClass, Items (Collection), Indices\r
}\r
}\r
}\r
- \r
+
+ #if NET_1_2
+ protected override void PerformDataBinding ()
+ {
+ base.PerformDataBinding ();
+ IEnumerable ds = GetResolvedDataSource ();
+ #else\r
protected override void OnDataBinding(EventArgs e)\r
{\r
base.OnDataBinding(e);\r
- IEnumerable resolvedData = DataSourceHelper.GetResolvedDataSource(DataSource, DataMember);\r
- if(resolvedData != null)\r
- {\r
- string dataTextField = DataTextField;\r
- string dataValueField = DataValueField;\r
+ IEnumerable ds = DataSourceHelper.GetResolvedDataSource (DataSource, DataMember);
+ #endif\r
+ if(ds != null) {\r
+ string dtf = DataTextField;\r
+ string dvf = DataValueField;\r
+ string dtfs = DataTextFormatString;\r
+ if (dtfs.Length == 0)\r
+ dtfs = "{0}";\r
+\r
Items.Clear();\r
- ICollection rdsCollection = resolvedDataSource as ICollection;\r
- if(rdsCollection != null)\r
- {\r
- Items.Capacity = rdsCollection.Count;\r
- }\r
- bool valid = ( (dataTextField.Length >= 0) && (dataValueField.Length >=0) );\r
- foreach(IEnumerable current in resolvedDataSource.GetEnumerator())\r
- {\r
+\r
+ bool dontUseProperties = (dtf.Length == 0 && dvf.Length == 0);\r
+\r
+ foreach (object current in ds) {\r
ListItem li = new ListItem();\r
- if(valid)\r
- {\r
- if(dataTextField.Length >= 0)\r
- {\r
- li.Text = DataBinder.GetPropertyValue(current, dataTextField, null);\r
- }\r
- if(dataValueField.Length >= 0)\r
- {\r
- li.Value = DataBinder.GetPropertyValue(current, dataValueField, null);\r
- }\r
- } else\r
- {\r
- li.Text = dataTextField.ToString();\r
- li.Value = dataValueField.ToString();\r
+ if (dontUseProperties){\r
+ li.Text = String.Format (dtfs, current);\r
+ li.Value = current.ToString ();\r
+ Items.Add (li);\r
+ continue;\r
+ }\r
+\r
+ object o;\r
+ if (dtf.Length > 0) {\r
+ o = DataBinder.GetPropertyValue (current, dtf, dtfs);\r
+ li.Text = o.ToString ();\r
}\r
+\r
+ if (dvf.Length > 0) {\r
+ o = DataBinder.GetPropertyValue (current, dvf, null);\r
+ li.Value = o.ToString ();\r
+ }\r
+\r
Items.Add(li);\r
}\r
}\r
- if(cachedSelectedIndex != -1)\r
- {\r
+
+ if (cachedSelectedValue != null) {
+ int index = Items.FindByValueInternal (cachedSelectedValue);
+ if (index == -1)
+ throw new ArgumentOutOfRangeException("value");
+
+ if (cachedSelectedIndex != -1 && cachedSelectedIndex != index)
+ throw new ArgumentException(HttpRuntime.FormatResourceString(
+ "Attributes_mutually_exclusive", "Selected Index", "Selected Value"));
+
+ SelectedIndex = index;
+ cachedSelectedIndex = -1;
+ cachedSelectedValue = null;
+ return;
+ }
+
+ if (cachedSelectedIndex != -1) {\r
SelectedIndex = cachedSelectedIndex;\r
cachedSelectedIndex = -1;\r
}\r
}\r
- \r
+\r
protected virtual void OnSelectedIndexChanged(EventArgs e)\r
{\r
if(Events!=null)\r
eh(this, e);\r
}\r
}\r
- \r
+\r
+ protected override void OnPreRender (EventArgs e)\r
+ {\r
+ base.OnPreRender(e);\r
+ }\r
+\r
protected override object SaveViewState()\r
{\r
//Order: BaseClass, Items (Collection), Indices\r
object vs = base.SaveViewState();\r
object itemSvs = Items.SaveViewState();\r
object indices = null;\r
- if(SaveSelectedIndicesViewState)\r
+ if (SaveSelectedIndicesViewState)\r
indices = SelectedIndices;\r
- if(vs!= null && itemSvs != null && indices != null)\r
- {\r
+\r
+ if (vs != null || itemSvs != null || indices != null)\r
return new Triplet(vs, itemSvs, indices);\r
- }\r
+\r
return null;\r
}\r
- \r
- protected ovrride void TrackViewState()\r
+\r
+ protected override void TrackViewState()\r
{\r
base.TrackViewState();\r
Items.TrackViewState();\r
}\r
- \r
- private bool SaveSelectedIndicesViewState\r
- {\r
- get\r
- {\r
- if( Events[SelectedIndexChangedEvent] != null && Enabled && Visible)\r
- {\r
+\r
+ private bool SaveSelectedIndicesViewState {\r
+ get {\r
+ if (Events[SelectedIndexChangedEvent] == null && Enabled && Visible) {\r
Type t = GetType();\r
// If I am a derivative, let it take of storing the selected indices.\r
- // Why should I bother.\r
- if(t == typeof(DropDownList) || t == typeof(ListBox) || t == typeof(CheckBoxList) || t == typeof(RadioButtonList))\r
+ if (t == typeof(DropDownList) || t == typeof(ListBox) ||\r
+ t == typeof(CheckBoxList) || t == typeof(RadioButtonList))\r
return false;\r
}\r
return true;\r
projects / mono.git / blobdiff