Code:
/ DotNET / DotNET / 8.0 / untmp / Orcas / RTM / ndp / fx / src / xsp / System / Web / Extensions / ui / webcontrols / NextPreviousPagerField.cs / 3 / NextPreviousPagerField.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
using System;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Drawing.Design;
using System.Globalization;
using System.Web;
using System.Web.Resources;
using System.Web.UI;
namespace System.Web.UI.WebControls {
[AspNetHostingPermission(System.Security.Permissions.SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(System.Security.Permissions.SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class NextPreviousPagerField : DataPagerField {
private int _startRowIndex;
private int _maximumRows;
private int _totalRowCount;
public NextPreviousPagerField() {
}
[
Category("Appearance"),
DefaultValue(""),
ResourceDescription("NextPreviousPagerField_ButtonCssClass"),
CssClassPropertyAttribute
]
public string ButtonCssClass {
get {
object o = ViewState["ButtonCssClass"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
if (value != ButtonCssClass) {
ViewState["ButtonCssClass"] = value;
OnFieldChanged();
}
}
}
///
/// Indicates the button type for the field.
///
[
Category("Appearance"),
DefaultValue(ButtonType.Link),
ResourceDescription("NextPreviousPagerField_ButtonType")
]
public ButtonType ButtonType {
get {
object o = ViewState["ButtonType"];
if (o != null)
return(ButtonType)o;
return ButtonType.Link;
}
set {
if (value < ButtonType.Button || value > ButtonType.Link) {
throw new ArgumentOutOfRangeException("value");
}
if (value != ButtonType) {
ViewState["ButtonType"] = value;
OnFieldChanged();
}
}
}
private bool EnableNextPage {
get {
return _startRowIndex + _maximumRows < _totalRowCount;
}
}
private bool EnablePreviousPage {
get {
return _startRowIndex > 0;
}
}
[
Category("Appearance"),
DefaultValue(""),
Editor(typeof(System.Web.UI.Design.ImageUrlEditor), typeof(UITypeEditor)),
ResourceDescription("NextPreviousPagerField_FirstPageImageUrl"),
SuppressMessage("Microsoft.Design", "CA1056:UriPropertiesShouldNotBeStrings",
Justification="Required by ASP.NET parser."),
UrlProperty()
]
public string FirstPageImageUrl {
get {
object o = ViewState["FirstPageImageUrl"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
if (value != FirstPageImageUrl) {
ViewState["FirstPageImageUrl"] = value;
OnFieldChanged();
}
}
}
[
Category("Appearance"),
Localizable(true),
ResourceDefaultValue("NextPrevPagerField_DefaultFirstPageText"),
ResourceDescription("NextPreviousPagerField_FirstPageText")
]
public string FirstPageText {
get {
object o = ViewState["FirstPageText"];
if (o != null) {
return (string)o;
}
return AtlasWeb.NextPrevPagerField_DefaultFirstPageText;
}
set {
if (value != FirstPageText) {
ViewState["FirstPageText"] = value;
OnFieldChanged();
}
}
}
[
Category("Appearance"),
DefaultValue(""),
Editor(typeof(System.Web.UI.Design.ImageUrlEditor), typeof(UITypeEditor)),
ResourceDescription("NextPreviousPagerField_LastPageImageUrl"),
SuppressMessage("Microsoft.Design", "CA1056:UriPropertiesShouldNotBeStrings",
Justification = "Required by ASP.NET parser."),
UrlProperty()
]
public string LastPageImageUrl {
get {
object o = ViewState["LastPageImageUrl"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
if (value != LastPageImageUrl) {
ViewState["LastPageImageUrl"] = value;
OnFieldChanged();
}
}
}
[
Category("Appearance"),
Localizable(true),
ResourceDefaultValue("NextPrevPagerField_DefaultLastPageText"),
ResourceDescription("NextPreviousPagerField_LastPageText")
]
public string LastPageText {
get {
object o = ViewState["LastPageText"];
if (o != null) {
return (string)o;
}
return AtlasWeb.NextPrevPagerField_DefaultLastPageText;
}
set {
if (value != LastPageText) {
ViewState["LastPageText"] = value;
OnFieldChanged();
}
}
}
[
Category("Appearance"),
DefaultValue(""),
Editor("System.Web.UI.Design.ImageUrlEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
ResourceDescription("NextPreviousPagerField_NextPageImageUrl"),
SuppressMessage("Microsoft.Design", "CA1056:UriPropertiesShouldNotBeStrings",
Justification = "Required by ASP.NET parser."),
UrlProperty()
]
public string NextPageImageUrl {
get {
object o = ViewState["NextPageImageUrl"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
if (value != NextPageImageUrl) {
ViewState["NextPageImageUrl"] = value;
OnFieldChanged();
}
}
}
[
Category("Appearance"),
Localizable(true),
ResourceDefaultValue("NextPrevPagerField_DefaultNextPageText"),
ResourceDescription("NextPreviousPagerField_NextPageText")
]
public string NextPageText {
get {
object o = ViewState["NextPageText"];
if (o != null) {
return (string)o;
}
return AtlasWeb.NextPrevPagerField_DefaultNextPageText;
}
set {
if (value != NextPageText) {
ViewState["NextPageText"] = value;
OnFieldChanged();
}
}
}
[
Category("Appearance"),
DefaultValue(""),
Editor(typeof(System.Web.UI.Design.ImageUrlEditor), typeof(UITypeEditor)),
ResourceDescription("NextPreviousPagerField_PreviousPageImageUrl"),
SuppressMessage("Microsoft.Design", "CA1056:UriPropertiesShouldNotBeStrings",
Justification = "Required by ASP.NET parser."),
UrlProperty()
]
public string PreviousPageImageUrl {
get {
object o = ViewState["PreviousPageImageUrl"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
if (value != PreviousPageImageUrl) {
ViewState["PreviousPageImageUrl"] = value;
OnFieldChanged();
}
}
}
[
Category("Appearance"),
Localizable(true),
ResourceDefaultValue("NextPrevPagerField_DefaultPreviousPageText"),
ResourceDescription("NextPreviousPagerField_PreviousPageText")
]
public string PreviousPageText {
get {
object o = ViewState["PreviousPageText"];
if (o != null) {
return (string)o;
}
return AtlasWeb.NextPrevPagerField_DefaultPreviousPageText;
}
set {
if (value != PreviousPageText) {
ViewState["PreviousPageText"] = value;
OnFieldChanged();
}
}
}
[
DefaultValue(true),
Category("Behavior"),
ResourceDescription("NextPreviousPagerField_RenderNonBreakingSpacesBetweenControls"),
]
public bool RenderNonBreakingSpacesBetweenControls {
get {
object o = ViewState["RenderNonBreakingSpacesBetweenControls"];
if (o != null) {
return (bool)o;
}
return true;
}
set {
if (value != RenderNonBreakingSpacesBetweenControls) {
ViewState["RenderNonBreakingSpacesBetweenControls"] = value;
OnFieldChanged();
}
}
}
[
DefaultValue(false),
Category("Behavior"),
ResourceDescription("NextPreviousPagerField_RenderDisabledButtonsAsLabels"),
]
public bool RenderDisabledButtonsAsLabels {
get {
object o = ViewState["RenderDisabledButtonsAsLabels"];
if (o != null) {
return (bool)o;
}
return false;
}
set {
if (value != RenderDisabledButtonsAsLabels) {
ViewState["RenderDisabledButtonsAsLabels"] = value;
OnFieldChanged();
}
}
}
[
DefaultValue(false),
Category("Behavior"),
ResourceDescription("NextPreviousPagerField_ShowFirstPageButton"),
]
public bool ShowFirstPageButton {
get {
object o = ViewState["ShowFirstPageButton"];
if (o != null) {
return (bool)o;
}
return false;
}
set {
if (value != ShowFirstPageButton) {
ViewState["ShowFirstPageButton"] = value;
OnFieldChanged();
}
}
}
[
DefaultValue(false),
Category("Behavior"),
ResourceDescription("NextPreviousPagerField_ShowLastPageButton"),
]
public bool ShowLastPageButton {
get {
object o = ViewState["ShowLastPageButton"];
if (o != null) {
return (bool)o;
}
return false;
}
set {
if (value != ShowLastPageButton) {
ViewState["ShowLastPageButton"] = value;
OnFieldChanged();
}
}
}
[
DefaultValue(true),
Category("Behavior"),
ResourceDescription("NextPreviousPagerField_ShowNextPageButton"),
]
public bool ShowNextPageButton {
get {
object o = ViewState["ShowNextPageButton"];
if (o != null) {
return (bool)o;
}
return true;
}
set {
if (value != ShowNextPageButton) {
ViewState["ShowNextPageButton"] = value;
OnFieldChanged();
}
}
}
[
DefaultValue(true),
Category("Behavior"),
ResourceDescription("NextPreviousPagerField_ShowPreviousPageButton"),
]
public bool ShowPreviousPageButton {
get {
object o = ViewState["ShowPreviousPageButton"];
if (o != null) {
return (bool)o;
}
return true;
}
set {
if (value != ShowPreviousPageButton) {
ViewState["ShowPreviousPageButton"] = value;
OnFieldChanged();
}
}
}
[
SuppressMessage("Microsoft.Usage", "CA2204:LiteralsShouldBeSpelledCorrectly", MessageId = "nbsp",
Justification = "Literal is HTML escape sequence."),
SuppressMessage("Microsoft.Globalization", "CA1303:DoNotPassLiteralsAsLocalizedParameters",
MessageId = "System.Web.UI.LiteralControl.#ctor(System.String)",
Justification = "Literal is HTML escape sequence.")
]
private void AddNonBreakingSpace(DataPagerFieldItem container) {
if (RenderNonBreakingSpacesBetweenControls) {
container.Controls.Add(new LiteralControl(" "));
}
}
protected override void CopyProperties(DataPagerField newField) {
((NextPreviousPagerField)newField).ButtonCssClass = ButtonCssClass;
((NextPreviousPagerField)newField).ButtonType = ButtonType;
((NextPreviousPagerField)newField).FirstPageImageUrl = FirstPageImageUrl;
((NextPreviousPagerField)newField).FirstPageText = FirstPageText;
((NextPreviousPagerField)newField).LastPageImageUrl = LastPageImageUrl;
((NextPreviousPagerField)newField).LastPageText = LastPageText;
((NextPreviousPagerField)newField).NextPageImageUrl = NextPageImageUrl;
((NextPreviousPagerField)newField).NextPageText = NextPageText;
((NextPreviousPagerField)newField).PreviousPageImageUrl = PreviousPageImageUrl;
((NextPreviousPagerField)newField).PreviousPageText = PreviousPageText;
((NextPreviousPagerField)newField).ShowFirstPageButton = ShowFirstPageButton;
((NextPreviousPagerField)newField).ShowLastPageButton = ShowLastPageButton;
((NextPreviousPagerField)newField).ShowNextPageButton = ShowNextPageButton;
((NextPreviousPagerField)newField).ShowPreviousPageButton = ShowPreviousPageButton;
base.CopyProperties(newField);
}
protected override DataPagerField CreateField() {
return new NextPreviousPagerField();
}
[SuppressMessage("Microsoft.Security", "CA2109:ReviewVisibleEventHandlers", MessageId = "0#")]
public override void HandleEvent(CommandEventArgs e) {
if (String.IsNullOrEmpty(DataPager.QueryStringField)) {
if (String.Equals(e.CommandName, DataControlCommands.PreviousPageCommandArgument)) {
int newStartRowIndex = _startRowIndex - DataPager.PageSize;
if (newStartRowIndex < 0) {
newStartRowIndex = 0;
}
DataPager.SetPageProperties(newStartRowIndex, DataPager.PageSize, true);
}
else if (String.Equals(e.CommandName, DataControlCommands.NextPageCommandArgument)) {
int newStartRowIndex = _startRowIndex + DataPager.PageSize;
if (newStartRowIndex > _totalRowCount) {
newStartRowIndex = _totalRowCount - DataPager.PageSize;
}
DataPager.SetPageProperties(newStartRowIndex, DataPager.PageSize, true);
}
else if (String.Equals(e.CommandName, DataControlCommands.FirstPageCommandArgument)) {
DataPager.SetPageProperties(0, DataPager.PageSize, true);
}
else if (String.Equals(e.CommandName, DataControlCommands.LastPageCommandArgument)) {
int newStartRowIndex;
int recordsOnLastPage = _totalRowCount % DataPager.PageSize;
if (recordsOnLastPage == 0) {
newStartRowIndex = _totalRowCount - DataPager.PageSize;
}
else {
newStartRowIndex = _totalRowCount - recordsOnLastPage;
}
DataPager.SetPageProperties(newStartRowIndex, DataPager.PageSize, true);
}
}
}
private Control CreateControl(string commandName, string buttonText, int fieldIndex, string imageUrl, bool enabled) {
IButtonControl button;
if (!enabled && RenderDisabledButtonsAsLabels) {
Label label = new Label();
label.Text = buttonText;
if (!String.IsNullOrEmpty(ButtonCssClass)) {
label.CssClass = ButtonCssClass;
}
return label;
}
switch (ButtonType) {
case ButtonType.Link:
button = new LinkButton();
((LinkButton)button).Enabled = enabled;
break;
case ButtonType.Button:
button = new Button();
((Button)button).Enabled = enabled;
break;
case ButtonType.Image:
default:
button = new ImageButton();
((ImageButton)button).ImageUrl = imageUrl;
((ImageButton)button).Enabled = enabled;
((ImageButton)button).AlternateText = HttpUtility.HtmlDecode(buttonText);
break;
}
button.Text = buttonText;
button.CommandName = commandName;
button.CommandArgument = fieldIndex.ToString(CultureInfo.InvariantCulture);
WebControl webControl = button as WebControl;
if (webControl != null && !String.IsNullOrEmpty(ButtonCssClass)) {
webControl.CssClass = ButtonCssClass;
}
return button as Control;
}
private HyperLink CreateLink(string buttonText, int pageIndex, string imageUrl, bool enabled) {
int pageNumber = pageIndex + 1;
HyperLink link = new HyperLink();
link.Text = buttonText;
link.NavigateUrl = GetQueryStringNavigateUrl(pageNumber);
link.ImageUrl = imageUrl;
link.Enabled = enabled;
if (!String.IsNullOrEmpty(ButtonCssClass)) {
link.CssClass = ButtonCssClass;
}
return link;
}
public override void CreateDataPagers(DataPagerFieldItem container, int startRowIndex, int maximumRows, int totalRowCount, int fieldIndex) {
_startRowIndex = startRowIndex;
_maximumRows = maximumRows;
_totalRowCount = totalRowCount;
if (String.IsNullOrEmpty(DataPager.QueryStringField)) {
CreateDataPagersForCommand(container, fieldIndex);
}
else {
CreateDataPagersForQueryString(container, fieldIndex);
}
}
private void CreateDataPagersForCommand(DataPagerFieldItem container, int fieldIndex) {
if (ShowFirstPageButton) {
container.Controls.Add(CreateControl(DataControlCommands.FirstPageCommandArgument, FirstPageText, fieldIndex, FirstPageImageUrl, EnablePreviousPage));
AddNonBreakingSpace(container);
}
if (ShowPreviousPageButton) {
container.Controls.Add(CreateControl(DataControlCommands.PreviousPageCommandArgument, PreviousPageText, fieldIndex, PreviousPageImageUrl, EnablePreviousPage));
AddNonBreakingSpace(container);
}
if (ShowNextPageButton) {
container.Controls.Add(CreateControl(DataControlCommands.NextPageCommandArgument, NextPageText, fieldIndex, NextPageImageUrl, EnableNextPage));
AddNonBreakingSpace(container);
}
if (ShowLastPageButton) {
container.Controls.Add(CreateControl(DataControlCommands.LastPageCommandArgument, LastPageText, fieldIndex, LastPageImageUrl, EnableNextPage));
AddNonBreakingSpace(container);
}
}
private void CreateDataPagersForQueryString(DataPagerFieldItem container, int fieldIndex) {
bool resetProperties = false;
if (!QueryStringHandled) {
int currentQSPageIndex;
QueryStringHandled = true;
bool parsed = Int32.TryParse(QueryStringValue, out currentQSPageIndex);
if (parsed) {
currentQSPageIndex--;//convert page number to page index.
int currentPageIndex = _startRowIndex / _maximumRows;
int highestPageIndex = (_totalRowCount - 1) / _maximumRows;
if ((currentQSPageIndex >= 0) && (currentQSPageIndex <= highestPageIndex)) {
_startRowIndex = (currentQSPageIndex * _maximumRows);
resetProperties = true;
}
}
}
if (ShowFirstPageButton) {
container.Controls.Add(CreateLink(FirstPageText, 0, FirstPageImageUrl, EnablePreviousPage));
AddNonBreakingSpace(container);
}
if (ShowPreviousPageButton) {
int pageIndex = (_startRowIndex / _maximumRows) - 1;
container.Controls.Add(CreateLink(PreviousPageText, pageIndex, PreviousPageImageUrl, EnablePreviousPage));
AddNonBreakingSpace(container);
}
if (ShowNextPageButton) {
int pageIndex = (_startRowIndex + _maximumRows) / _maximumRows;
container.Controls.Add(CreateLink(NextPageText, pageIndex, NextPageImageUrl, EnableNextPage));
AddNonBreakingSpace(container);
}
if (ShowLastPageButton) {
int pageIndex = (_totalRowCount / _maximumRows) - (_totalRowCount % _maximumRows == 0 ? 1 : 0);
container.Controls.Add(CreateLink(LastPageText, pageIndex, LastPageImageUrl, EnableNextPage));
AddNonBreakingSpace(container);
}
if (resetProperties) {
DataPager.SetPageProperties(_startRowIndex, _maximumRows, true);
}
}
// Required for design-time support (DesignerPagerStyle)
[SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")]
public override bool Equals(object o) {
NextPreviousPagerField field = o as NextPreviousPagerField;
if (field != null) {
if (String.Equals(field.ButtonCssClass, this.ButtonCssClass) &&
field.ButtonType == this.ButtonType &&
String.Equals(field.FirstPageImageUrl, this.FirstPageImageUrl) &&
String.Equals(field.FirstPageText, this.FirstPageText) &&
String.Equals(field.LastPageImageUrl, this.LastPageImageUrl) &&
String.Equals(field.LastPageText, this.LastPageText) &&
String.Equals(field.NextPageImageUrl, this.NextPageImageUrl) &&
String.Equals(field.NextPageText, this.NextPageText) &&
String.Equals(field.PreviousPageImageUrl, this.PreviousPageImageUrl) &&
String.Equals(field.PreviousPageText, this.PreviousPageText) &&
field.ShowFirstPageButton == this.ShowFirstPageButton &&
field.ShowLastPageButton == this.ShowLastPageButton &&
field.ShowNextPageButton == this.ShowNextPageButton &&
field.ShowPreviousPageButton == this.ShowPreviousPageButton) {
return true;
}
}
return false;
}
[SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")]
public override int GetHashCode() {
return
this.ButtonCssClass.GetHashCode() |
this.ButtonType.GetHashCode() |
this.FirstPageImageUrl.GetHashCode() |
this.FirstPageText.GetHashCode() |
this.LastPageImageUrl.GetHashCode() |
this.LastPageText.GetHashCode() |
this.NextPageImageUrl.GetHashCode() |
this.NextPageText.GetHashCode() |
this.PreviousPageImageUrl.GetHashCode() |
this.PreviousPageText.GetHashCode() |
this.ShowFirstPageButton.GetHashCode() |
this.ShowLastPageButton.GetHashCode() |
this.ShowNextPageButton.GetHashCode() |
this.ShowPreviousPageButton.GetHashCode();
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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