//
// System.Web.UI.WebControls.FormView.cs
//
// Authors:
// Lluis Sanchez Gual (lluis@novell.com)
//
// (C) 2005 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.
//
#if NET_2_0
using System;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Web.UI;
using System.Security.Permissions;
using System.Text;
using System.IO;
using System.Reflection;
namespace System.Web.UI.WebControls{
[SupportsEventValidation]
[DesignerAttribute ("System.Web.UI.Design.WebControls.FormViewDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
[ControlValuePropertyAttribute ("SelectedValue")]
[DefaultEventAttribute ("PageIndexChanging")]
[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public class FormView: CompositeDataBoundControl, IDataItemContainer, INamingContainer, IPostBackEventHandler, IPostBackContainer
{
object dataItem;
Table table;
FormViewRow headerRow;
FormViewRow footerRow;
FormViewRow bottomPagerRow;
FormViewRow topPagerRow;
FormViewRow itemRow;
IOrderedDictionary currentEditRowKeys;
IOrderedDictionary currentEditNewValues;
IOrderedDictionary currentEditOldValues;
ITemplate pagerTemplate;
ITemplate emptyDataTemplate;
ITemplate headerTemplate;
ITemplate footerTemplate;
ITemplate editItemTemplate;
ITemplate insertItemTemplate;
ITemplate itemTemplate;
PropertyDescriptor[] cachedKeyProperties;
readonly string[] emptyKeys = new string[0];
readonly string unhandledEventExceptionMessage = "The FormView '{0}' fired event {1} which wasn't handled.";
// View state
PagerSettings pagerSettings;
TableItemStyle editRowStyle;
TableItemStyle insertRowStyle;
TableItemStyle emptyDataRowStyle;
TableItemStyle footerStyle;
TableItemStyle headerStyle;
TableItemStyle pagerStyle;
TableItemStyle rowStyle;
IOrderedDictionary _keyTable;
DataKey key;
DataKey oldEditValues;
static readonly object PageIndexChangedEvent = new object();
static readonly object PageIndexChangingEvent = new object();
static readonly object ItemCommandEvent = new object();
static readonly object ItemCreatedEvent = new object();
static readonly object ItemDeletedEvent = new object();
static readonly object ItemDeletingEvent = new object();
static readonly object ItemInsertedEvent = new object();
static readonly object ItemInsertingEvent = new object();
static readonly object ModeChangingEvent = new object();
static readonly object ModeChangedEvent = new object();
static readonly object ItemUpdatedEvent = new object();
static readonly object ItemUpdatingEvent = new object();
// Control state
int pageIndex;
FormViewMode currentMode = FormViewMode.ReadOnly;
bool hasCurrentMode;
int pageCount;
public event EventHandler PageIndexChanged {
add { Events.AddHandler (PageIndexChangedEvent, value); }
remove { Events.RemoveHandler (PageIndexChangedEvent, value); }
}
public event FormViewPageEventHandler PageIndexChanging {
add { Events.AddHandler (PageIndexChangingEvent, value); }
remove { Events.RemoveHandler (PageIndexChangingEvent, value); }
}
public event FormViewCommandEventHandler ItemCommand {
add { Events.AddHandler (ItemCommandEvent, value); }
remove { Events.RemoveHandler (ItemCommandEvent, value); }
}
public event EventHandler ItemCreated {
add { Events.AddHandler (ItemCreatedEvent, value); }
remove { Events.RemoveHandler (ItemCreatedEvent, value); }
}
public event FormViewDeletedEventHandler ItemDeleted {
add { Events.AddHandler (ItemDeletedEvent, value); }
remove { Events.RemoveHandler (ItemDeletedEvent, value); }
}
public event FormViewDeleteEventHandler ItemDeleting {
add { Events.AddHandler (ItemDeletingEvent, value); }
remove { Events.RemoveHandler (ItemDeletingEvent, value); }
}
public event FormViewInsertedEventHandler ItemInserted {
add { Events.AddHandler (ItemInsertedEvent, value); }
remove { Events.RemoveHandler (ItemInsertedEvent, value); }
}
public event FormViewInsertEventHandler ItemInserting {
add { Events.AddHandler (ItemInsertingEvent, value); }
remove { Events.RemoveHandler (ItemInsertingEvent, value); }
}
public event FormViewModeEventHandler ModeChanging {
add { Events.AddHandler (ModeChangingEvent, value); }
remove { Events.RemoveHandler (ModeChangingEvent, value); }
}
public event EventHandler ModeChanged {
add { Events.AddHandler (ModeChangedEvent, value); }
remove { Events.RemoveHandler (ModeChangedEvent, value); }
}
public event FormViewUpdatedEventHandler ItemUpdated {
add { Events.AddHandler (ItemUpdatedEvent, value); }
remove { Events.RemoveHandler (ItemUpdatedEvent, value); }
}
public event FormViewUpdateEventHandler ItemUpdating {
add { Events.AddHandler (ItemUpdatingEvent, value); }
remove { Events.RemoveHandler (ItemUpdatingEvent, value); }
}
protected virtual void OnPageIndexChanged (EventArgs e)
{
if (Events != null) {
EventHandler eh = (EventHandler) Events [PageIndexChangedEvent];
if (eh != null) eh (this, e);
}
}
protected virtual void OnPageIndexChanging (FormViewPageEventArgs e)
{
if (Events != null) {
FormViewPageEventHandler eh = (FormViewPageEventHandler) Events [PageIndexChangingEvent];
if (eh != null) {
eh (this, e);
return;
}
}
if (!IsBoundUsingDataSourceID)
throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "PageIndexChanging"));
}
protected virtual void OnItemCommand (FormViewCommandEventArgs e)
{
if (Events != null) {
FormViewCommandEventHandler eh = (FormViewCommandEventHandler) Events [ItemCommandEvent];
if (eh != null) eh (this, e);
}
}
protected virtual void OnItemCreated (EventArgs e)
{
if (Events != null) {
EventHandler eh = (EventHandler) Events [ItemCreatedEvent];
if (eh != null) eh (this, e);
}
}
protected virtual void OnItemDeleted (FormViewDeletedEventArgs e)
{
if (Events != null) {
FormViewDeletedEventHandler eh = (FormViewDeletedEventHandler) Events [ItemDeletedEvent];
if (eh != null) eh (this, e);
}
}
protected virtual void OnItemInserted (FormViewInsertedEventArgs e)
{
if (Events != null) {
FormViewInsertedEventHandler eh = (FormViewInsertedEventHandler) Events [ItemInsertedEvent];
if (eh != null) eh (this, e);
}
}
protected virtual void OnItemInserting (FormViewInsertEventArgs e)
{
if (Events != null) {
FormViewInsertEventHandler eh = (FormViewInsertEventHandler) Events [ItemInsertingEvent];
if (eh != null) {
eh (this, e);
return;
}
}
if (!IsBoundUsingDataSourceID)
throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ItemInserting"));
}
protected virtual void OnItemDeleting (FormViewDeleteEventArgs e)
{
if (Events != null) {
FormViewDeleteEventHandler eh = (FormViewDeleteEventHandler) Events [ItemDeletingEvent];
if (eh != null) {
eh (this, e);
return;
}
}
if (!IsBoundUsingDataSourceID)
throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ItemDeleting"));
}
protected virtual void OnModeChanged (EventArgs e)
{
if (Events != null) {
EventHandler eh = (EventHandler) Events [ModeChangedEvent];
if (eh != null) eh (this, e);
}
}
protected virtual void OnModeChanging (FormViewModeEventArgs e)
{
if (Events != null) {
FormViewModeEventHandler eh = (FormViewModeEventHandler) Events [ModeChangingEvent];
if (eh != null) {
eh (this, e);
return;
}
}
if (!IsBoundUsingDataSourceID)
throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ModeChanging"));
}
protected virtual void OnItemUpdated (FormViewUpdatedEventArgs e)
{
if (Events != null) {
FormViewUpdatedEventHandler eh = (FormViewUpdatedEventHandler) Events [ItemUpdatedEvent];
if (eh != null) eh (this, e);
}
}
protected virtual void OnItemUpdating (FormViewUpdateEventArgs e)
{
if (Events != null) {
FormViewUpdateEventHandler eh = (FormViewUpdateEventHandler) Events [ItemUpdatingEvent];
if (eh != null) {
eh (this, e);
return;
}
}
if (!IsBoundUsingDataSourceID)
throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ItemUpdating"));
}
[WebCategoryAttribute ("Paging")]
[DefaultValueAttribute (false)]
public virtual bool AllowPaging {
get {
object ob = ViewState ["AllowPaging"];
if (ob != null) return (bool) ob;
return false;
}
set {
ViewState ["AllowPaging"] = value;
RequireBinding ();
}
}
[UrlPropertyAttribute]
[WebCategoryAttribute ("Appearance")]
[DefaultValueAttribute ("")]
[EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
public virtual string BackImageUrl {
get {
if (ControlStyleCreated)
return ((TableStyle) ControlStyle).BackImageUrl;
return String.Empty;
}
set {
((TableStyle) ControlStyle).BackImageUrl = value;
}
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public virtual FormViewRow BottomPagerRow {
get {
EnsureChildControls ();
return bottomPagerRow;
}
}
[WebCategoryAttribute ("Accessibility")]
[DefaultValueAttribute ("")]
[LocalizableAttribute (true)]
public virtual string Caption {
get {
object ob = ViewState ["Caption"];
if (ob != null) return (string) ob;
return string.Empty;
}
set {
ViewState ["Caption"] = value;
RequireBinding ();
}
}
[WebCategoryAttribute ("Accessibility")]
[DefaultValueAttribute (TableCaptionAlign.NotSet)]
public virtual TableCaptionAlign CaptionAlign
{
get {
object o = ViewState ["CaptionAlign"];
if(o != null) return (TableCaptionAlign) o;
return TableCaptionAlign.NotSet;
}
set {
ViewState ["CaptionAlign"] = value;
RequireBinding ();
}
}
[WebCategoryAttribute ("Layout")]
[DefaultValueAttribute (-1)]
public virtual int CellPadding
{
get {
if (ControlStyleCreated)
return ((TableStyle) ControlStyle).CellPadding;
return -1;
}
set {
((TableStyle) ControlStyle).CellPadding = value;
}
}
[WebCategoryAttribute ("Layout")]
[DefaultValueAttribute (0)]
public virtual int CellSpacing
{
get {
if (ControlStyleCreated)
return ((TableStyle) ControlStyle).CellSpacing;
return 0;
}
set {
((TableStyle) ControlStyle).CellSpacing = value;
}
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public FormViewMode CurrentMode {
get {
return hasCurrentMode ? currentMode : DefaultMode;
}
private set {
hasCurrentMode = true;
currentMode = value;
}
}
FormViewMode defaultMode;
[DefaultValueAttribute (FormViewMode.ReadOnly)]
[WebCategoryAttribute ("Behavior")]
public virtual FormViewMode DefaultMode {
get {
return defaultMode;
}
set {
defaultMode = value;
RequireBinding ();
}
}
string[] dataKeyNames;
[DefaultValueAttribute (null)]
[WebCategoryAttribute ("Data")]
[TypeConverter (typeof(StringArrayConverter))]
[EditorAttribute ("System.Web.UI.Design.WebControls.DataFieldEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
public virtual string[] DataKeyNames
{
get {
if (dataKeyNames == null)
return emptyKeys;
return dataKeyNames;
}
set {
dataKeyNames = value;
RequireBinding ();
}
}
IOrderedDictionary KeyTable {
get {
if (_keyTable == null) {
_keyTable = new OrderedDictionary (DataKeyNames.Length);
}
return _keyTable;
}
}
[BrowsableAttribute (false)]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
public virtual DataKey DataKey {
get {
if (key == null) {
key= new DataKey (KeyTable);
}
return key;
}
}
DataKey OldEditValues {
get {
if (oldEditValues == null) {
oldEditValues = new DataKey (new OrderedDictionary ());
}
return oldEditValues;
}
}
[DefaultValue (null)]
[TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
[PersistenceMode (PersistenceMode.InnerProperty)]
[Browsable (false)]
public virtual ITemplate EditItemTemplate {
get { return editItemTemplate; }
set { editItemTemplate = value; }
}
[WebCategoryAttribute ("Styles")]
[PersistenceMode (PersistenceMode.InnerProperty)]
[NotifyParentProperty (true)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
[DefaultValueAttribute (null)]
public TableItemStyle EditRowStyle {
get {
if (editRowStyle == null) {
editRowStyle = new TableItemStyle ();
if (IsTrackingViewState)
editRowStyle.TrackViewState();
}
return editRowStyle;
}
}
[WebCategoryAttribute ("Styles")]
[PersistenceMode (PersistenceMode.InnerProperty)]
[NotifyParentProperty (true)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
[DefaultValueAttribute (null)]
public TableItemStyle EmptyDataRowStyle {
get {
if (emptyDataRowStyle == null) {
emptyDataRowStyle = new TableItemStyle ();
if (IsTrackingViewState)
emptyDataRowStyle.TrackViewState();
}
return emptyDataRowStyle;
}
}
[DefaultValue (null)]
[TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
[PersistenceMode (PersistenceMode.InnerProperty)]
[Browsable (false)]
public virtual ITemplate EmptyDataTemplate {
get { return emptyDataTemplate; }
set { emptyDataTemplate = value; }
}
[LocalizableAttribute (true)]
[WebCategoryAttribute ("Appearance")]
[DefaultValueAttribute ("")]
public virtual string EmptyDataText {
get {
object ob = ViewState ["EmptyDataText"];
if (ob != null) return (string) ob;
return string.Empty;
}
set {
ViewState ["EmptyDataText"] = value;
RequireBinding ();
}
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public virtual FormViewRow FooterRow {
get {
EnsureChildControls ();
return footerRow;
}
}
[DefaultValue (null)]
[TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
[PersistenceMode (PersistenceMode.InnerProperty)]
[Browsable (false)]
public virtual ITemplate FooterTemplate {
get { return footerTemplate; }
set { footerTemplate = value; }
}
[LocalizableAttribute (true)]
[WebCategoryAttribute ("Appearance")]
[DefaultValueAttribute ("")]
public virtual string FooterText {
get {
object ob = ViewState ["FooterText"];
if (ob != null) return (string) ob;
return string.Empty;
}
set {
ViewState ["FooterText"] = value;
RequireBinding ();
}
}
[WebCategoryAttribute ("Styles")]
[PersistenceMode (PersistenceMode.InnerProperty)]
[NotifyParentProperty (true)]
[DefaultValue (null)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
public TableItemStyle FooterStyle {
get {
if (footerStyle == null) {
footerStyle = new TableItemStyle ();
if (IsTrackingViewState)
footerStyle.TrackViewState();
}
return footerStyle;
}
}
[WebCategoryAttribute ("Appearance")]
[DefaultValueAttribute (GridLines.None)]
public virtual GridLines GridLines {
get {
if (ControlStyleCreated)
return ((TableStyle) ControlStyle).GridLines;
return GridLines.None;
}
set {
((TableStyle) ControlStyle).GridLines = value;
}
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public virtual FormViewRow HeaderRow {
get {
EnsureChildControls ();
return headerRow;
}
}
[WebCategoryAttribute ("Styles")]
[PersistenceMode (PersistenceMode.InnerProperty)]
[NotifyParentProperty (true)]
[DefaultValue (null)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
public TableItemStyle HeaderStyle {
get {
if (headerStyle == null) {
headerStyle = new TableItemStyle ();
if (IsTrackingViewState)
headerStyle.TrackViewState();
}
return headerStyle;
}
}
[DefaultValue (null)]
[TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
[PersistenceMode (PersistenceMode.InnerProperty)]
[Browsable (false)]
public virtual ITemplate HeaderTemplate {
get { return headerTemplate; }
set { headerTemplate = value; }
}
[LocalizableAttribute (true)]
[WebCategoryAttribute ("Appearance")]
[DefaultValueAttribute ("")]
public virtual string HeaderText {
get {
object ob = ViewState ["HeaderText"];
if (ob != null) return (string) ob;
return string.Empty;
}
set {
ViewState ["HeaderText"] = value;
RequireBinding ();
}
}
[Category ("Layout")]
[DefaultValueAttribute (HorizontalAlign.NotSet)]
public virtual HorizontalAlign HorizontalAlign {
get {
if (ControlStyleCreated)
return ((TableStyle) ControlStyle).HorizontalAlign;
return HorizontalAlign.NotSet;
}
set {
((TableStyle) ControlStyle).HorizontalAlign = value;
}
}
[DefaultValue (null)]
[TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
[PersistenceMode (PersistenceMode.InnerProperty)]
[Browsable (false)]
public virtual ITemplate InsertItemTemplate {
get { return insertItemTemplate; }
set { insertItemTemplate = value; }
}
[WebCategoryAttribute ("Styles")]
[PersistenceMode (PersistenceMode.InnerProperty)]
[NotifyParentProperty (true)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
[DefaultValueAttribute (null)]
public TableItemStyle InsertRowStyle {
get {
if (insertRowStyle == null) {
insertRowStyle = new TableItemStyle ();
if (IsTrackingViewState)
insertRowStyle.TrackViewState();
}
return insertRowStyle;
}
}
[DefaultValue (null)]
[TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
[PersistenceMode (PersistenceMode.InnerProperty)]
[Browsable (false)]
public virtual ITemplate ItemTemplate {
get { return itemTemplate; }
set { itemTemplate = value; }
}
[BrowsableAttribute (false)]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
public virtual int PageCount {
get {
return pageCount;
}
private set {
pageCount = value;
}
}
[WebCategoryAttribute ("Paging")]
[BindableAttribute (true, BindingDirection.OneWay)]
[DefaultValueAttribute (0)]
public virtual int PageIndex {
get {
return pageIndex;
}
set {
if (value < -1)
throw new ArgumentOutOfRangeException ("PageIndex must be non-negative");
if (pageIndex == value || value == -1)
return;
pageIndex = value;
RequireBinding ();
}
}
[WebCategoryAttribute ("Paging")]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Content)]
[NotifyParentPropertyAttribute (true)]
[PersistenceModeAttribute (PersistenceMode.InnerProperty)]
public virtual PagerSettings PagerSettings {
get {
if (pagerSettings == null) {
pagerSettings = new PagerSettings (this);
if (IsTrackingViewState)
((IStateManager)pagerSettings).TrackViewState ();
}
return pagerSettings;
}
}
[WebCategoryAttribute ("Styles")]
[PersistenceMode (PersistenceMode.InnerProperty)]
[NotifyParentProperty (true)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
public TableItemStyle PagerStyle {
get {
if (pagerStyle == null) {
pagerStyle = new TableItemStyle ();
if (IsTrackingViewState)
pagerStyle.TrackViewState();
}
return pagerStyle;
}
}
[DefaultValue (null)]
[TemplateContainerAttribute (typeof (FormView))]
[PersistenceMode (PersistenceMode.InnerProperty)]
[Browsable (false)]
public virtual ITemplate PagerTemplate {
get { return pagerTemplate; }
set { pagerTemplate = value; }
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public virtual FormViewRow Row {
get {
EnsureChildControls ();
return itemRow;
}
}
[WebCategoryAttribute ("Styles")]
[PersistenceMode (PersistenceMode.InnerProperty)]
[NotifyParentProperty (true)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
[DefaultValue (null)]
public TableItemStyle RowStyle {
get {
if (rowStyle == null) {
rowStyle = new TableItemStyle ();
if (IsTrackingViewState)
rowStyle.TrackViewState();
}
return rowStyle;
}
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public object SelectedValue {
get { return DataKey.Value; }
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public virtual FormViewRow TopPagerRow {
get {
EnsureChildControls ();
return topPagerRow;
}
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public virtual object DataItem {
get {
return dataItem;
}
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public int DataItemCount {
get { return PageCount; }
}
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
[BrowsableAttribute (false)]
public virtual int DataItemIndex {
get { return PageIndex; }
}
int IDataItemContainer.DataItemIndex {
get { return DataItemIndex; }
}
int IDataItemContainer.DisplayIndex {
get { return PageIndex; }
}
public virtual bool IsBindableType (Type type)
{
return type.IsPrimitive || type == typeof (string) || type == typeof (DateTime) || type == typeof (Guid) || type == typeof (Decimal);
}
protected override DataSourceSelectArguments CreateDataSourceSelectArguments ()
{
DataSourceSelectArguments arg = new DataSourceSelectArguments ();
DataSourceView view = GetData ();
if (AllowPaging && view.CanPage) {
arg.StartRowIndex = PageIndex;
if (view.CanRetrieveTotalRowCount) {
arg.RetrieveTotalRowCount = true;
arg.MaximumRows = 1;
}
else {
arg.MaximumRows = -1;
}
}
return arg;
}
protected virtual FormViewRow CreateRow (int rowIndex, DataControlRowType rowType, DataControlRowState rowState)
{
if (rowType == DataControlRowType.Pager)
return new FormViewPagerRow (rowIndex, rowType, rowState);
else
return new FormViewRow (rowIndex, rowType, rowState);
}
void RequireBinding ()
{
if (Initialized) {
RequiresDataBinding = true;
}
}
protected virtual Table CreateTable ()
{
return new ContainedTable (this);
}
protected override void EnsureDataBound ()
{
if (CurrentMode == FormViewMode.Insert) {
if (RequiresDataBinding) {
OnDataBinding (EventArgs.Empty);
RequiresDataBinding = false;
InternalPerformDataBinding (null);
MarkAsDataBound ();
OnDataBound (EventArgs.Empty);
}
}
else
base.EnsureDataBound ();
}
protected override Style CreateControlStyle ()
{
TableStyle style = new TableStyle (ViewState);
style.CellSpacing = 0;
return style;
}
protected override int CreateChildControls (IEnumerable data, bool dataBinding)
{
PagedDataSource dataSource = new PagedDataSource ();
dataSource.DataSource = CurrentMode != FormViewMode.Insert ? data : null;
dataSource.AllowPaging = AllowPaging;
dataSource.PageSize = 1;
dataSource.CurrentPageIndex = PageIndex;
if (dataBinding && CurrentMode != FormViewMode.Insert) {
DataSourceView view = GetData ();
if (view != null && view.CanPage) {
dataSource.AllowServerPaging = true;
if (SelectArguments.RetrieveTotalRowCount)
dataSource.VirtualCount = SelectArguments.TotalRowCount;
}
}
PagerSettings pagerSettings = PagerSettings;
bool showPager = AllowPaging && pagerSettings.Visible && (dataSource.PageCount > 1);
Controls.Clear ();
table = CreateTable ();
Controls.Add (table);
headerRow = null;
footerRow = null;
topPagerRow = null;
bottomPagerRow = null;
// Gets the current data item
if (AllowPaging) {
PageCount = dataSource.DataSourceCount;
if (PageIndex >= PageCount && PageCount > 0) {
pageIndex = dataSource.CurrentPageIndex = PageCount - 1;
}
if (dataSource.DataSource != null) {
IEnumerator e = dataSource.GetEnumerator ();
if (e.MoveNext ())
dataItem = e.Current;
}
}
else {
int page = 0;
object lastItem = null;
if (dataSource.DataSource != null) {
IEnumerator e = dataSource.GetEnumerator ();
for (; e.MoveNext (); page++) {
lastItem = e.Current;
if (page == PageIndex)
dataItem = e.Current;
}
}
PageCount = page;
if (PageIndex >= PageCount && PageCount > 0) {
pageIndex = PageCount - 1;
dataItem = lastItem;
}
}
// Main table creation
bool emptyRow = PageCount == 0 && CurrentMode != FormViewMode.Insert;
if (!emptyRow) {
headerRow = CreateRow (-1, DataControlRowType.Header, DataControlRowState.Normal);
InitializeRow (headerRow);
table.Rows.Add (headerRow);
}
if (showPager && pagerSettings.Position == PagerPosition.Top || pagerSettings.Position == PagerPosition.TopAndBottom) {
topPagerRow = CreateRow (-1, DataControlRowType.Pager, DataControlRowState.Normal);
InitializePager (topPagerRow, dataSource);
table.Rows.Add (topPagerRow);
}
if (PageCount > 0) {
DataControlRowState rstate = GetRowState ();
itemRow = CreateRow (0, DataControlRowType.DataRow, rstate);
InitializeRow (itemRow);
table.Rows.Add (itemRow);
} else {
switch (CurrentMode) {
case FormViewMode.Edit:
itemRow = CreateRow (-1, DataControlRowType.EmptyDataRow, DataControlRowState.Edit);
break;
case FormViewMode.Insert:
itemRow = CreateRow (-1, DataControlRowType.DataRow, DataControlRowState.Insert);
break;
default:
itemRow = CreateRow (-1, DataControlRowType.EmptyDataRow, DataControlRowState.Normal);
break;
}
InitializeRow (itemRow);
table.Rows.Add (itemRow);
}
if (!emptyRow) {
footerRow = CreateRow (-1, DataControlRowType.Footer, DataControlRowState.Normal);
InitializeRow (footerRow);
table.Rows.Add (footerRow);
}
if (showPager && pagerSettings.Position == PagerPosition.Bottom || pagerSettings.Position == PagerPosition.TopAndBottom) {
bottomPagerRow = CreateRow (0, DataControlRowType.Pager, DataControlRowState.Normal);
InitializePager (bottomPagerRow, dataSource);
table.Rows.Add (bottomPagerRow);
}
OnItemCreated (EventArgs.Empty);
if (dataBinding)
DataBind (false);
return PageCount;
}
DataControlRowState GetRowState ()
{
DataControlRowState rstate = DataControlRowState.Normal;
if (CurrentMode == FormViewMode.Edit) rstate |= DataControlRowState.Edit;
else if (CurrentMode == FormViewMode.Insert) rstate |= DataControlRowState.Insert;
return rstate;
}
protected virtual void InitializePager (FormViewRow row, PagedDataSource dataSource)
{
TableCell cell = new TableCell ();
cell.ColumnSpan = 2;
if (pagerTemplate != null)
pagerTemplate.InstantiateIn (cell);
else
cell.Controls.Add (PagerSettings.CreatePagerControl (dataSource.CurrentPageIndex, dataSource.PageCount));
row.Cells.Add (cell);
}
protected virtual void InitializeRow (FormViewRow row)
{
TableCell cell = new TableCell ();
if (row.RowType == DataControlRowType.DataRow)
{
if ((row.RowState & DataControlRowState.Edit) != 0) {
if (editItemTemplate != null)
editItemTemplate.InstantiateIn (cell);
else
row.Visible = false;
} else if ((row.RowState & DataControlRowState.Insert) != 0) {
if (insertItemTemplate != null)
insertItemTemplate.InstantiateIn (cell);
else
row.Visible = false;
}
else if (itemTemplate != null)
itemTemplate.InstantiateIn (cell);
else
row.Visible = false;
}
else if (row.RowType == DataControlRowType.EmptyDataRow)
{
if (emptyDataTemplate != null)
emptyDataTemplate.InstantiateIn (cell);
else if (!String.IsNullOrEmpty (EmptyDataText))
cell.Text = EmptyDataText;
else
row.Visible = false;
}
else if (row.RowType == DataControlRowType.Footer)
{
if (footerTemplate != null)
footerTemplate.InstantiateIn (cell);
else if (!String.IsNullOrEmpty (FooterText))
cell.Text = FooterText;
else
row.Visible = false;
}
else if (row.RowType == DataControlRowType.Header)
{
if (headerTemplate != null)
headerTemplate.InstantiateIn (cell);
else if (!String.IsNullOrEmpty (HeaderText))
cell.Text = HeaderText;
else
row.Visible = false;
}
cell.ColumnSpan = 2;
row.Cells.Add (cell);
}
void FillRowDataKey (object dataItem)
{
KeyTable.Clear ();
if (cachedKeyProperties == null) {
PropertyDescriptorCollection props = TypeDescriptor.GetProperties (dataItem);
cachedKeyProperties = new PropertyDescriptor [DataKeyNames.Length];
for (int n=0; n<DataKeyNames.Length; n++) {
PropertyDescriptor p = props.Find (DataKeyNames [n], true);
if (p == null)
throw new InvalidOperationException ("Property '" + DataKeyNames[n] + "' not found in object of type " + dataItem.GetType());
cachedKeyProperties [n] = p;
}
}
foreach (PropertyDescriptor p in cachedKeyProperties)
KeyTable [p.Name] = p.GetValue (dataItem);
}
IOrderedDictionary GetRowValues (bool includePrimaryKey)
{
OrderedDictionary dic = new OrderedDictionary ();
ExtractRowValues (dic, includePrimaryKey);
return dic;
}
protected virtual void ExtractRowValues (IOrderedDictionary fieldValues, bool includeKeys)
{
if (Row == null)
return;
DataControlRowState rowState = Row.RowState;
IBindableTemplate bt;
if ((rowState & DataControlRowState.Insert) != 0)
bt = insertItemTemplate as IBindableTemplate;
else if ((rowState & DataControlRowState.Edit) != 0)
bt = editItemTemplate as IBindableTemplate;
else
return;
if (bt != null) {
IOrderedDictionary values = bt.ExtractValues (Row.Cells [0]);
if (values != null)
foreach (DictionaryEntry e in values) {
if (includeKeys || Array.IndexOf (DataKeyNames, e.Key) == -1)
fieldValues [e.Key] = e.Value;
}
}
}
protected override HtmlTextWriterTag TagKey {
get {
return HtmlTextWriterTag.Table;
}
}
public sealed override void DataBind ()
{
cachedKeyProperties = null;
base.DataBind ();
if (pageCount > 0) {
if (CurrentMode == FormViewMode.Edit)
oldEditValues = new DataKey (GetRowValues (true));
FillRowDataKey (dataItem);
key = new DataKey (KeyTable);
}
}
protected internal override void PerformDataBinding (IEnumerable data)
{
base.PerformDataBinding (data);
}
protected internal virtual void PrepareControlHierarchy ()
{
if (table == null)
return;
table.Caption = Caption;
table.CaptionAlign = CaptionAlign;
foreach (FormViewRow row in table.Rows) {
switch (row.RowType) {
case DataControlRowType.Header:
if (headerStyle != null && !headerStyle.IsEmpty)
row.ControlStyle.CopyFrom (headerStyle);
break;
case DataControlRowType.Footer:
if (footerStyle != null && !footerStyle.IsEmpty)
row.ControlStyle.CopyFrom (footerStyle);
break;
case DataControlRowType.Pager:
if (pagerStyle != null && !pagerStyle.IsEmpty)
row.ControlStyle.CopyFrom (pagerStyle);
break;
case DataControlRowType.EmptyDataRow:
if (emptyDataRowStyle != null && !emptyDataRowStyle.IsEmpty)
row.ControlStyle.CopyFrom (emptyDataRowStyle);
break;
case DataControlRowType.DataRow:
if (rowStyle != null && !rowStyle.IsEmpty)
row.ControlStyle.CopyFrom (rowStyle);
if ((row.RowState & (DataControlRowState.Edit | DataControlRowState.Insert)) != 0 && editRowStyle != null && !editRowStyle.IsEmpty)
row.ControlStyle.CopyFrom (editRowStyle);
if ((row.RowState & DataControlRowState.Insert) != 0 && insertRowStyle != null && !insertRowStyle.IsEmpty)
row.ControlStyle.CopyFrom (insertRowStyle);
break;
default:
break;
}
}
}
protected internal override void OnInit (EventArgs e)
{
Page.RegisterRequiresControlState (this);
base.OnInit (e);
}
protected override bool OnBubbleEvent (object source, EventArgs e)
{
FormViewCommandEventArgs args = e as FormViewCommandEventArgs;
if (args != null) {
bool causesValidation = false;
IButtonControl button = args.CommandSource as IButtonControl;
if (button != null && button.CausesValidation) {
Page.Validate (button.ValidationGroup);
causesValidation = true;
}
ProcessCommand (args, causesValidation);
return true;
}
return base.OnBubbleEvent (source, e);
}
void ProcessCommand (FormViewCommandEventArgs args, bool causesValidation)
{
OnItemCommand (args);
ProcessEvent (args.CommandName, args.CommandArgument as string, causesValidation);
}
void IPostBackEventHandler.RaisePostBackEvent (string eventArgument)
{
RaisePostBackEvent (eventArgument);
}
protected virtual void RaisePostBackEvent (string eventArgument)
{
int i = eventArgument.IndexOf ('$');
CommandEventArgs arg;
if (i != -1)
arg = new CommandEventArgs (eventArgument.Substring (0, i), eventArgument.Substring (i + 1));
else
arg = new CommandEventArgs (eventArgument, null);
ProcessCommand (new FormViewCommandEventArgs (this, arg), false);
}
void ProcessEvent (string eventName, string param, bool causesValidation)
{
switch (eventName)
{
case DataControlCommands.PageCommandName:
int newIndex = -1;
switch (param) {
case DataControlCommands.FirstPageCommandArgument:
newIndex = 0;
break;
case DataControlCommands.LastPageCommandArgument:
newIndex = PageCount - 1;
break;
case DataControlCommands.NextPageCommandArgument:
newIndex = PageIndex + 1;
break;
case DataControlCommands.PreviousPageCommandArgument:
newIndex = PageIndex - 1;
break;
default:
int paramIndex = 0;
int.TryParse (param, out paramIndex);
newIndex = paramIndex - 1;
break;
}
ShowPage (newIndex);
break;
case DataControlCommands.FirstPageCommandArgument:
ShowPage (0);
break;
case DataControlCommands.LastPageCommandArgument:
ShowPage (PageCount - 1);
break;
case DataControlCommands.NextPageCommandArgument:
if (PageIndex < PageCount - 1)
ShowPage (PageIndex + 1);
break;
case DataControlCommands.PreviousPageCommandArgument:
if (PageIndex > 0)
ShowPage (PageIndex - 1);
break;
case DataControlCommands.EditCommandName:
ProcessChangeMode (FormViewMode.Edit, false);
break;
case DataControlCommands.NewCommandName:
ProcessChangeMode (FormViewMode.Insert, false);
break;
case DataControlCommands.UpdateCommandName:
UpdateItem (param, causesValidation);
break;
case DataControlCommands.CancelCommandName:
CancelEdit ();
break;
case DataControlCommands.DeleteCommandName:
DeleteItem ();
break;
case DataControlCommands.InsertCommandName:
InsertItem (causesValidation);
break;
}
}
void ShowPage (int index)
{
FormViewPageEventArgs args = new FormViewPageEventArgs (index);
OnPageIndexChanging (args);
if (args.Cancel || !IsBoundUsingDataSourceID)
return;
int newIndex = args.NewPageIndex;
if (newIndex < 0 || newIndex >= PageCount)
return;
EndRowEdit (false, false);
PageIndex = newIndex;
OnPageIndexChanged (EventArgs.Empty);
}
public void ChangeMode (FormViewMode newMode)
{
if (CurrentMode == newMode)
return;
CurrentMode = newMode;
RequireBinding ();
}
void ProcessChangeMode (FormViewMode newMode, bool cancelingEdit)
{
FormViewModeEventArgs args = new FormViewModeEventArgs (newMode, cancelingEdit);
OnModeChanging (args);
if (args.Cancel || !IsBoundUsingDataSourceID)
return;
ChangeMode (args.NewMode);
OnModeChanged (EventArgs.Empty);
}
void CancelEdit ()
{
EndRowEdit (true, true);
}
public virtual void UpdateItem (bool causesValidation)
{
UpdateItem (null, causesValidation);
}
void UpdateItem (string param, bool causesValidation)
{
if (causesValidation && Page != null && !Page.IsValid)
return;
if (currentMode != FormViewMode.Edit) throw new HttpException ("Must be in Edit mode");
currentEditOldValues = OldEditValues.Values;
currentEditRowKeys = DataKey.Values;
currentEditNewValues = GetRowValues (false);
FormViewUpdateEventArgs args = new FormViewUpdateEventArgs (param, currentEditRowKeys, currentEditOldValues, currentEditNewValues);
OnItemUpdating (args);
if (args.Cancel || !IsBoundUsingDataSourceID)
return;
DataSourceView view = GetData ();
if (view == null)
throw new HttpException ("The DataSourceView associated to data bound control was null");
view.Update (currentEditRowKeys, currentEditNewValues, currentEditOldValues, new DataSourceViewOperationCallback (UpdateCallback));
}
bool UpdateCallback (int recordsAffected, Exception exception)
{
FormViewUpdatedEventArgs dargs = new FormViewUpdatedEventArgs (recordsAffected, exception, currentEditRowKeys, currentEditOldValues, currentEditNewValues);
OnItemUpdated (dargs);
if (!dargs.KeepInEditMode)
EndRowEdit (true, false);
return dargs.ExceptionHandled;
}
public virtual void InsertItem (bool causesValidation)
{
InsertItem (null, causesValidation);
}
void InsertItem (string param, bool causesValidation)
{
if (causesValidation && Page != null && !Page.IsValid)
return;
if (currentMode != FormViewMode.Insert) throw new HttpException ("Must be in Insert mode");
currentEditNewValues = GetRowValues (true);
FormViewInsertEventArgs args = new FormViewInsertEventArgs (param, currentEditNewValues);
OnItemInserting (args);
if (args.Cancel || !IsBoundUsingDataSourceID)
return;
DataSourceView view = GetData ();
if (view == null)
throw new HttpException ("The DataSourceView associated to data bound control was null");
view.Insert (currentEditNewValues, new DataSourceViewOperationCallback (InsertCallback));
}
bool InsertCallback (int recordsAffected, Exception exception)
{
FormViewInsertedEventArgs dargs = new FormViewInsertedEventArgs (recordsAffected, exception, currentEditNewValues);
OnItemInserted (dargs);
if (!dargs.KeepInInsertMode)
EndRowEdit (true, false);
return dargs.ExceptionHandled;
}
public virtual void DeleteItem ()
{
currentEditRowKeys = DataKey.Values;
currentEditNewValues = GetRowValues (true);
FormViewDeleteEventArgs args = new FormViewDeleteEventArgs (PageIndex, currentEditRowKeys, currentEditNewValues);
OnItemDeleting (args);
if (args.Cancel || !IsBoundUsingDataSourceID)
return;
if (PageIndex > 0 && PageIndex == PageCount - 1)
PageIndex--;
RequireBinding ();
DataSourceView view = GetData ();
if (view != null)
view.Delete (currentEditRowKeys, currentEditNewValues, new DataSourceViewOperationCallback (DeleteCallback));
else {
FormViewDeletedEventArgs dargs = new FormViewDeletedEventArgs (0, null, currentEditRowKeys, currentEditNewValues);
OnItemDeleted (dargs);
}
}
bool DeleteCallback (int recordsAffected, Exception exception)
{
FormViewDeletedEventArgs dargs = new FormViewDeletedEventArgs (recordsAffected, exception, currentEditRowKeys, currentEditNewValues);
OnItemDeleted (dargs);
return dargs.ExceptionHandled;
}
void EndRowEdit (bool switchToDefaultMode, bool cancelingEdit)
{
if (switchToDefaultMode)
ProcessChangeMode (DefaultMode, cancelingEdit);
oldEditValues = new DataKey (new OrderedDictionary ());
currentEditRowKeys = null;
currentEditOldValues = null;
currentEditNewValues = null;
RequireBinding ();
}
protected internal override void LoadControlState (object ob)
{
if (ob == null) return;
object[] state = (object[]) ob;
base.LoadControlState (state[0]);
pageIndex = (int) state[1];
pageCount = (int) state[2];
CurrentMode = (FormViewMode) state[3];
defaultMode = (FormViewMode) state[4];
dataKeyNames = (string[]) state[5];
if (state [6] != null)
((IStateManager) DataKey).LoadViewState (state [6]);
if (state [7] != null)
((IStateManager) OldEditValues).LoadViewState (state [7]);
}
protected internal override object SaveControlState ()
{
object bstate = base.SaveControlState ();
return new object [] {
bstate,
pageIndex,
pageCount,
CurrentMode,
defaultMode,
dataKeyNames,
(key == null ? null : ((IStateManager)key).SaveViewState()),
(oldEditValues == null ? null : ((IStateManager) oldEditValues).SaveViewState ())
};
}
protected override void TrackViewState()
{
base.TrackViewState();
if (pagerSettings != null) ((IStateManager)pagerSettings).TrackViewState();
if (footerStyle != null) ((IStateManager)footerStyle).TrackViewState();
if (headerStyle != null) ((IStateManager)headerStyle).TrackViewState();
if (pagerStyle != null) ((IStateManager)pagerStyle).TrackViewState();
if (rowStyle != null) ((IStateManager)rowStyle).TrackViewState();
if (editRowStyle != null) ((IStateManager)editRowStyle).TrackViewState();
if (insertRowStyle != null) ((IStateManager)insertRowStyle).TrackViewState();
if (emptyDataRowStyle != null) ((IStateManager)emptyDataRowStyle).TrackViewState();
}
protected override object SaveViewState()
{
object[] states = new object [10];
states[0] = base.SaveViewState();
states[1] = (pagerSettings == null ? null : ((IStateManager)pagerSettings).SaveViewState());
states[2] = (footerStyle == null ? null : ((IStateManager)footerStyle).SaveViewState());
states[3] = (headerStyle == null ? null : ((IStateManager)headerStyle).SaveViewState());
states[4] = (pagerStyle == null ? null : ((IStateManager)pagerStyle).SaveViewState());
states[5] = (rowStyle == null ? null : ((IStateManager)rowStyle).SaveViewState());
states[6] = (insertRowStyle == null ? null : ((IStateManager)insertRowStyle).SaveViewState());
states[7] = (editRowStyle == null ? null : ((IStateManager)editRowStyle).SaveViewState());
states[8] = (emptyDataRowStyle == null ? null : ((IStateManager)emptyDataRowStyle).SaveViewState());
for (int i = states.Length - 1; i >= 0; i--) {
if (states [i] != null)
return states;
}
return null;
}
protected override void LoadViewState (object savedState)
{
if (savedState == null) {
base.LoadViewState (null);
return;
}
object [] states = (object []) savedState;
base.LoadViewState (states[0]);
if (states[1] != null) ((IStateManager)PagerSettings).LoadViewState (states[1]);
if (states[2] != null) ((IStateManager)FooterStyle).LoadViewState (states[2]);
if (states[3] != null) ((IStateManager)HeaderStyle).LoadViewState (states[3]);
if (states[4] != null) ((IStateManager)PagerStyle).LoadViewState (states[4]);
if (states[5] != null) ((IStateManager)RowStyle).LoadViewState (states[5]);
if (states[6] != null) ((IStateManager)InsertRowStyle).LoadViewState (states[6]);
if (states[7] != null) ((IStateManager)EditRowStyle).LoadViewState (states[7]);
if (states[8] != null) ((IStateManager)EmptyDataRowStyle).LoadViewState (states[8]);
}
protected internal override void Render (HtmlTextWriter writer)
{
PrepareControlHierarchy ();
if (table == null)
return;
table.Render (writer);
}
PostBackOptions IPostBackContainer.GetPostBackOptions (IButtonControl control)
{
if (control == null)
throw new ArgumentNullException ("control");
if (control.CausesValidation)
throw new InvalidOperationException ("A button that causes validation in FormView '" + ID + "' is attempting to use the container GridView as the post back target. The button should either turn off validation or use itself as the post back container.");
PostBackOptions options = new PostBackOptions (this);
options.Argument = control.CommandName + "$" + control.CommandArgument;
options.RequiresJavaScriptProtocol = true;
return options;
}
}
}
#endif
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