-/**\r
- * Namespace: System.Web.UI.WebControls\r
- * Class: BaseDataList\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: 20%\r
- *\r
- * (C) Gaurav Vaish (2001)\r
- */\r
+//
+// System.Web.UI.WebControls.BaseDataList.cs
+//
+// Authors:
+// Gaurav Vaish (gvaish@iitk.ac.in)
+// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
+//
+// (C) Gaurav Vaish (2001)
+// (C) 2003 Andreas Nahr
+//\r
+
+//
+// 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.
+//
\r
using System;\r
+using System.ComponentModel;
+using System.ComponentModel.Design;\r
using System.Collections;\r
using System.Web;\r
-using System.Web.UI;\r
+using System.Web.UI;
+using System.Web.Util;\r
\r
namespace System.Web.UI.WebControls\r
{\r
+ [DefaultEvent("SelectedIndexChanged")]\r
+ [DefaultProperty("DataSource")]\r
+ [Designer("System.Web.UI.Design.WebControls.BaseDataListDesigner, " + Consts.AssemblySystem_Design, typeof (IDesigner))]\r
public abstract class BaseDataList: WebControl\r
{\r
+ private static readonly object SelectedIndexChangedEvent = new object();\r
+ internal static string ItemCountViewStateKey = "_!ItemCount";\r
\r
- private int cellPadding = -1;\r
- private int cellSpacing = 0;\r
- private object dataSource = null;\r
- private string dataKeyField = String.Empty;\r
- private DataKeyCollection dataKeys; // TODO: From where do get the values into it?\r
- private string dataMember;\r
- private GridLines gridLines;\r
- private HorizontalAlign hAlign;\r
+ private DataKeyCollection dataKeys;\r
+ private object dataSource;\r
\r
- public BaseDataList()\r
+ public BaseDataList() : base()\r
{\r
- // TODO Something\r
- dataKeys = new DataKeyCollection(new ArrayList());\r
- dataMember = String.Empty;\r
- gridLines = GridLines.Both;\r
- hAlign = HorizontalAlign.NotSet;\r
}\r
\r
public static bool IsBindableType(Type type)\r
{\r
- //TODO: To see what has to be here\r
- if(type.IsPrimitive)\r
+ if(type.IsPrimitive || type == typeof(string) || type == typeof(DateTime) || type == typeof(Decimal))\r
+ return true;\r
+ return false;\r
+ }\r
+\r
+ public override ControlCollection Controls\r
+ {\r
+ get\r
{\r
- //Type.GetTypeFromHandle(new RuntimeTypeHandle());\r
+ EnsureChildControls();\r
+ return base.Controls;\r
}\r
- return false; //for the time being, to be able to make it compile\r
}\r
\r
+ public override void DataBind()\r
+ {
+ #if NET_2_0
+ RequiresDataBinding = false;
+ #endif\r
+ OnDataBinding(EventArgs.Empty);\r
+ }\r
+\r
+ [WebCategory("Action")]\r
+ [WebSysDescription("BaseDataList_OnSelectedIndexChanged")]\r
+ public event EventHandler SelectedIndexChanged\r
+ {\r
+ add\r
+ {\r
+ Events.AddHandler(SelectedIndexChangedEvent, value);\r
+ }\r
+ remove\r
+ {\r
+ Events.RemoveHandler(SelectedIndexChangedEvent, value);\r
+ }\r
+ }\r
+\r
+ [Bindable(true)]\r
+ [DefaultValue(-1)]\r
+ [WebCategory("Layout")]\r
+ [WebSysDescription("BaseDataList_CellPadding")]\r
public virtual int CellPadding\r
{\r
get\r
{\r
- return cellPadding;\r
+ if(!ControlStyleCreated)\r
+ return -1;\r
+ return ((TableStyle)ControlStyle).CellPadding;\r
}\r
set\r
{\r
- cellPadding = value;\r
+ ((TableStyle)ControlStyle).CellPadding = value;\r
}\r
}\r
\r
+ [Bindable(true)]\r
+ [DefaultValue(-1)]\r
+ [WebCategory("Layout")]\r
+ [WebSysDescription("BaseDataList_CellSpacing")]\r
public virtual int CellSpacing\r
{\r
get\r
{\r
- return cellSpacing;\r
+ if(!ControlStyleCreated)\r
+ return -1;\r
+ return ((TableStyle)ControlStyle).CellSpacing;\r
}\r
set\r
{\r
- cellSpacing = value;\r
+ ((TableStyle)ControlStyle).CellSpacing = value;\r
}\r
}\r
\r
+ [DefaultValue("")]\r
+ [WebCategory("Data")]\r
+ [WebSysDescription("BaseDataList_DataKeyField")]\r
public virtual string DataKeyField\r
{\r
get\r
{\r
- return dataKeyField;\r
+ object o = ViewState["DataKeyField"];\r
+ if(o!=null)\r
+ return (string)o;\r
+ return String.Empty;\r
}\r
set\r
{\r
- dataKeyField = value;\r
+ ViewState["DataKeyField"] = value;\r
}\r
}\r
\r
+ [Browsable(true)]\r
+ [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]\r
+ [WebSysDescription("BaseDataList_DataKeys")]\r
public DataKeyCollection DataKeys\r
{\r
get\r
{\r
+ if( dataKeys==null )\r
+ dataKeys = new DataKeyCollection(DataKeysArray);\r
return dataKeys;\r
+\r
}\r
}\r
\r
+ [DefaultValue("")]\r
+ [WebCategory("Data")]\r
+ [WebSysDescription("BaseDataList_DataMember")]\r
public string DataMember\r
{\r
get\r
{\r
- return dataMember;\r
+ object o = ViewState["DataMember"];\r
+ if(o!=null)\r
+ return (string)o;\r
+ return String.Empty;\r
}\r
set\r
{\r
- dataMember = value;\r
+ ViewState["DataMember"] = value;\r
}\r
}\r
\r
- public virtual object DataSource\r
+ [Bindable(true)]\r
+ [DefaultValue(null)]\r
+ [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]\r
+ [WebCategory("Data")]\r
+ [WebSysDescription("BaseDataList_DataSource")]\r
+ public virtual object DataSource {
+ get {
+ return dataSource;
+ }
+ set {
+ if (value == null || value is IListSource || value is IEnumerable) {
+ dataSource = value;
+ } else {
+ throw new ArgumentException (HttpRuntime.FormatResourceString (
+ "Invalid_DataSource_Type", ID));
+ }
+ }
+ }
+
+ [Bindable(true)]\r
+ [DefaultValue(GridLines.Both)]\r
+ [WebCategory("Appearance")]\r
+ [WebSysDescription("BaseDataList_GridLines")]\r
+ public virtual GridLines GridLines\r
{\r
get\r
{\r
- return dataSource;\r
+ if(ControlStyleCreated)\r
+ return ((TableStyle)ControlStyle).GridLines;\r
+ return GridLines.Both;\r
}\r
set\r
{\r
- dataSource = value;\r
+ ((TableStyle)ControlStyle).GridLines = value;\r
}\r
- }\r
+ }
+
+ // LAMESPEC HorizontalAlign has a Category attribute, this should obviously be a WebCategory attribute
+ // but is defined incorrectly in the MS framework\r
\r
- public virtual GridLines GridLines\r
+ [Bindable(true)]\r
+ [DefaultValue(HorizontalAlign.NotSet)]\r
+ [Category("Layout")]\r
+ [WebSysDescription("BaseDataList_HorizontalAlign")]\r
+ public virtual HorizontalAlign HorizontalAlign\r
{\r
get\r
{\r
- return gridLines;\r
+ if(ControlStyleCreated)\r
+ return ((TableStyle)ControlStyle).HorizontalAlign;\r
+ return HorizontalAlign.NotSet;\r
}\r
set\r
{\r
- gridLines = value;\r
+ ((TableStyle)ControlStyle).HorizontalAlign = value;\r
}\r
}\r
\r
- public virtual HorizontalAlign HorizontalAlign\r
+ protected ArrayList DataKeysArray\r
{\r
get\r
{\r
- return hAlign;\r
- }\r
- set\r
- {\r
- hAlign = value;\r
+ object o = ViewState["DataKeys"];\r
+ if(o == null)\r
+ {\r
+ o = new ArrayList();\r
+ ViewState["DataKeys"] = o;\r
+ }\r
+ return (ArrayList)o;\r
}\r
}\r
\r
- public override void DataBind()\r
- {\r
- // TODO: have to write the implementation\r
- // I am not sure of whether it will be of any use here since\r
- // I am an abstract class, and have no identity of myself.\r
- //dataBindEventArgs = EventArgs.Empty;\r
- OnDataBinding(EventArgs.Empty);\r
- throw new NotImplementedException();\r
- }\r
-\r
- //TODO: Check - where are the following abstract methods?\r
- /*\r
- * CreateControlHierarchy(bool)\r
- * PrepareControlHierarchy()\r
- */\r
-\r
protected override void AddParsedSubObject(object o)\r
{\r
- // Preventing literal controls from being added as children: Do nothing here.\r
+ // Preventing literal controls from being added as children.\r
}\r
\r
protected override void CreateChildControls()\r
{\r
Controls.Clear();\r
- if(ViewState["_!ItemCount"]!=null)\r
+ if(ViewState[ItemCountViewStateKey]!=null)\r
{\r
- CreateControlHierarchy(true);\r
+ CreateControlHierarchy(false);\r
ClearChildViewState();\r
}\r
}\r
\r
- protected abstract void CreateControlHierarchy(bool useDataSource);\r
+ protected override void OnDataBinding(EventArgs e)\r
+ {\r
+ base.OnDataBinding(e);\r
+ Controls.Clear();\r
+ ClearChildViewState();\r
+ CreateControlHierarchy(true);\r
+ ChildControlsCreated = true;\r
+ TrackViewState();\r
+ }\r
+\r
+ protected virtual void OnSelectedIndexChanged(EventArgs e)\r
+ {\r
+ if(Events != null)\r
+ {\r
+ EventHandler eh = (EventHandler)(Events[SelectedIndexChangedEvent]);\r
+ if(eh!=null)\r
+ eh(this, e);\r
+ }\r
+ }\r
+\r
+ protected override void Render(HtmlTextWriter writer)\r
+ {\r
+ PrepareControlHierarchy();\r
+ RenderContents(writer);\r
+ }\r
+\r
+ protected abstract void PrepareControlHierarchy();\r
+ protected abstract void CreateControlHierarchy(bool useDataSource);
+
+ #if NET_2_0
+
+
+ // should be `internal protected' (why, oh WHY did they do that !?!)
+ protected override void OnInit (EventArgs e)
+ {
+ base.OnInit(e);
+ inited = true;
+ if (!Page.IsPostBack)
+ RequiresDataBinding = true;
+ }
+
+ // should be `internal protected' (why, oh WHY did they do that !?!)
+ protected override void OnLoad (EventArgs e)
+ {
+ IDataSource ds = GetDataSourceObject () as IDataSource;
+ if (ds != null && DataSourceID != "")
+ ds.DataSourceChanged += new EventHandler (OnDataSourceChanged);
+
+ base.OnLoad(e);
+ }
+
+ // should be `internal protected' (why, oh WHY did they do that !?!)
+ protected override void OnPreRender (EventArgs e)
+ {
+ EnsureDataBound ();
+ base.OnPreRender (e);
+ }
+
+ protected void EnsureDataBound ()
+ {
+ if (RequiresDataBinding && DataSourceID != "")
+ DataBind ();
+ }
+
+ protected virtual object GetDataSourceObject ()
+ {
+ if (DataSourceID != "")
+ return (IDataSource) NamingContainer.FindControl (DataSourceID);
+
+ return DataSource;
+ }
+
+ protected virtual IEnumerable GetResolvedDataSource ()
+ {
+ if (DataSource != null && DataSourceID != "")
+ throw new HttpException ();
+
+ IDataSource ds = this.GetDataSourceObject () as IDataSource;
+ if (ds != null && DataSourceID != "")
+ return ds.GetView (DataMember).Select ();
+ else if (DataSource != null)
+ return DataSourceHelper.GetResolvedDataSource (DataSource, DataMember);
+ else
+ return null;
+ }
+
+ protected void OnDataSourceChanged (object sender, EventArgs e)
+ {
+ RequiresDataBinding = true;
+ }
+
+ public virtual string DataSourceID {
+ get {
+ object o = ViewState ["DataSourceID"];
+ if (o != null)
+ return (string)o;
+
+ return String.Empty;
+ }
+ set {
+ if (inited)
+ RequiresDataBinding = true;
+
+ ViewState ["DataSourceID"] = value;
+ }
+ }
+
+ bool requiresDataBinding;
+ protected bool RequiresDataBinding {
+ get { return requiresDataBinding; }
+ set { requiresDataBinding = value; }
+ }
+
+ protected bool inited;
+
+ #else
+ internal IEnumerable GetResolvedDataSource ()
+ {
+ if (DataSource != null)
+ return DataSourceHelper.GetResolvedDataSource (DataSource, DataMember);
+ else
+ return null;
+ }
+ #endif\r
}\r
}\r
projects / mono.git / blobdiff