517 lines
20 KiB
C#
517 lines
20 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="NumericPagerField.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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using System;
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using System.ComponentModel;
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using System.Diagnostics.CodeAnalysis;
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using System.Drawing.Design;
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using System.Globalization;
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using System.Web;
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using System.Web.Resources;
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using System.Web.UI;
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namespace System.Web.UI.WebControls {
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public class NumericPagerField : DataPagerField {
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private int _startRowIndex;
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private int _maximumRows;
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private int _totalRowCount;
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public NumericPagerField() {
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}
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[
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DefaultValue(5),
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Category("Appearance"),
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ResourceDescription("NumericPagerField_ButtonCount"),
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]
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public int ButtonCount {
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get {
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object o = ViewState["ButtonCount"];
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if (o != null) {
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return (int)o;
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}
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return 5;
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}
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set {
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if (value < 1) {
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throw new ArgumentOutOfRangeException("value");
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}
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if (value != ButtonCount) {
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ViewState["ButtonCount"] = value;
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OnFieldChanged();
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}
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}
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}
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/// <devdoc>
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/// <para>Indicates the button type for the field.</para>
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/// </devdoc>
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[
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Category("Appearance"),
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DefaultValue(ButtonType.Link),
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ResourceDescription("NumericPagerField_ButtonType"),
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]
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public ButtonType ButtonType {
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get {
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object o = ViewState["ButtonType"];
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if (o != null)
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return(ButtonType)o;
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return ButtonType.Link;
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}
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set {
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if (value < ButtonType.Button || value > ButtonType.Link) {
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throw new ArgumentOutOfRangeException("value");
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}
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if (value != ButtonType) {
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ViewState["ButtonType"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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Category("Appearance"),
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DefaultValue(""),
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ResourceDescription("NumericPagerField_CurrentPageLabelCssClass"),
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CssClassPropertyAttribute
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]
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public string CurrentPageLabelCssClass {
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get {
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object o = ViewState["CurrentPageLabelCssClass"];
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if (o != null) {
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return (string)o;
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}
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return String.Empty;
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}
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set {
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if (value != CurrentPageLabelCssClass) {
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ViewState["CurrentPageLabelCssClass"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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Category("Appearance"),
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DefaultValue(""),
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Editor(typeof(System.Web.UI.Design.ImageUrlEditor), typeof(UITypeEditor)),
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ResourceDescription("NumericPagerField_NextPageImageUrl"),
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SuppressMessage("Microsoft.Design", "CA1056:UriPropertiesShouldNotBeStrings",
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Justification = "Required by ASP.NET parser."),
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UrlProperty()
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]
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public string NextPageImageUrl {
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get {
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object o = ViewState["NextPageImageUrl"];
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if (o != null) {
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return (string)o;
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}
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return String.Empty;
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}
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set {
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if (value != NextPageImageUrl) {
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ViewState["NextPageImageUrl"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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Category("Appearance"),
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Localizable(true),
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ResourceDefaultValue("NumericPagerField_DefaultNextPageText"),
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ResourceDescription("NumericPagerField_NextPageText")
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]
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public string NextPageText {
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get {
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object o = ViewState["NextPageText"];
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if (o != null) {
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return (string)o;
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}
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return AtlasWeb.NumericPagerField_DefaultNextPageText;
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}
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set {
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if (value != NextPageText) {
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ViewState["NextPageText"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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Category("Appearance"),
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DefaultValue(""),
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ResourceDescription("NumericPagerField_NextPreviousButtonCssClass"),
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CssClassPropertyAttribute
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]
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public string NextPreviousButtonCssClass {
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get {
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object o = ViewState["NextPreviousButtonCssClass"];
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if (o != null) {
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return (string)o;
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}
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return String.Empty;
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}
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set {
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if (value != NextPreviousButtonCssClass) {
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ViewState["NextPreviousButtonCssClass"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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Category("Appearance"),
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DefaultValue(""),
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ResourceDescription("NumericPagerField_NumericButtonCssClass"),
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CssClassPropertyAttribute
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]
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public string NumericButtonCssClass {
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get {
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object o = ViewState["NumericButtonCssClass"];
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if (o != null) {
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return (string)o;
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}
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return String.Empty;
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}
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set {
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if (value != NumericButtonCssClass) {
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ViewState["NumericButtonCssClass"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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Category("Appearance"),
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DefaultValue(""),
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Editor(typeof(System.Web.UI.Design.ImageUrlEditor), typeof(UITypeEditor)),
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ResourceDescription("NumericPagerField_PreviousPageImageUrl"),
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SuppressMessage("Microsoft.Design", "CA1056:UriPropertiesShouldNotBeStrings",
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Justification = "Required by ASP.NET parser."),
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UrlProperty()
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]
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public string PreviousPageImageUrl {
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get {
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object o = ViewState["PreviousPageImageUrl"];
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if (o != null) {
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return (string)o;
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}
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return String.Empty;
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}
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set {
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if (value != PreviousPageImageUrl) {
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ViewState["PreviousPageImageUrl"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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Category("Appearance"),
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Localizable(true),
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ResourceDefaultValue("NumericPagerField_DefaultPreviousPageText"),
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ResourceDescription("NumericPagerField_PreviousPageText")
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]
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public string PreviousPageText {
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get {
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object o = ViewState["PreviousPageText"];
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if (o != null) {
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return (string)o;
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}
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return AtlasWeb.NumericPagerField_DefaultPreviousPageText;
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}
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set {
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if (value != PreviousPageText) {
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ViewState["PreviousPageText"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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DefaultValue(true),
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Category("Behavior"),
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ResourceDescription("NumericPagerField_RenderNonBreakingSpacesBetweenControls"),
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]
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public bool RenderNonBreakingSpacesBetweenControls {
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get {
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object o = ViewState["RenderNonBreakingSpacesBetweenControls"];
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if (o != null) {
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return (bool)o;
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}
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return true;
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}
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set {
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if (value != RenderNonBreakingSpacesBetweenControls) {
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ViewState["RenderNonBreakingSpacesBetweenControls"] = value;
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OnFieldChanged();
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}
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}
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}
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[
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SuppressMessage("Microsoft.Usage", "CA2204:LiteralsShouldBeSpelledCorrectly", MessageId = "nbsp",
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Justification = "Literal is HTML escape sequence."),
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SuppressMessage("Microsoft.Globalization", "CA1303:DoNotPassLiteralsAsLocalizedParameters",
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MessageId = "System.Web.UI.LiteralControl.#ctor(System.String)",
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Justification = "Literal is HTML escape sequence.")
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]
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private void AddNonBreakingSpace(DataPagerFieldItem container) {
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if (RenderNonBreakingSpacesBetweenControls) {
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container.Controls.Add(new LiteralControl(" "));
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}
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}
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protected override void CopyProperties(DataPagerField newField) {
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((NumericPagerField)newField).ButtonCount = ButtonCount;
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((NumericPagerField)newField).ButtonType = ButtonType;
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((NumericPagerField)newField).CurrentPageLabelCssClass = CurrentPageLabelCssClass;
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((NumericPagerField)newField).NextPageImageUrl = NextPageImageUrl;
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((NumericPagerField)newField).NextPageText = NextPageText;
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((NumericPagerField)newField).NextPreviousButtonCssClass = NextPreviousButtonCssClass;
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((NumericPagerField)newField).NumericButtonCssClass = NumericButtonCssClass;
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((NumericPagerField)newField).PreviousPageImageUrl = PreviousPageImageUrl;
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((NumericPagerField)newField).PreviousPageText = PreviousPageText;
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base.CopyProperties(newField);
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}
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protected override DataPagerField CreateField() {
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return new NumericPagerField();
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}
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[SuppressMessage("Microsoft.Security", "CA2109:ReviewVisibleEventHandlers", MessageId = "0#")]
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public override void HandleEvent(CommandEventArgs e) {
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if (String.IsNullOrEmpty(DataPager.QueryStringField)) {
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int newStartRowIndex = -1;
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int currentPageIndex = _startRowIndex / DataPager.PageSize;
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int firstButtonIndex = (_startRowIndex / (ButtonCount * DataPager.PageSize)) * ButtonCount;
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int lastButtonIndex = firstButtonIndex + ButtonCount - 1;
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int lastRecordIndex = ((lastButtonIndex + 1) * DataPager.PageSize) - 1;
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if (String.Equals(e.CommandName, DataControlCommands.PreviousPageCommandArgument)) {
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newStartRowIndex = (firstButtonIndex - 1) * DataPager.PageSize;
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if (newStartRowIndex < 0) {
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newStartRowIndex = 0;
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}
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}
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else if (String.Equals(e.CommandName, DataControlCommands.NextPageCommandArgument)) {
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newStartRowIndex = lastRecordIndex + 1;
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if (newStartRowIndex > _totalRowCount) {
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newStartRowIndex = _totalRowCount - DataPager.PageSize;
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}
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}
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else {
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int pageIndex = Convert.ToInt32(e.CommandName, CultureInfo.InvariantCulture);
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newStartRowIndex = pageIndex * DataPager.PageSize;
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}
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if (newStartRowIndex != -1) {
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DataPager.SetPageProperties(newStartRowIndex, DataPager.PageSize, true);
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}
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}
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}
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private Control CreateNumericButton(string buttonText, string commandArgument, string commandName) {
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IButtonControl button;
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switch (ButtonType) {
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case ButtonType.Button:
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button = new Button();
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break;
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case ButtonType.Link:
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default:
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button = new LinkButton();
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break;
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}
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button.Text = buttonText;
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button.CausesValidation = false;
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button.CommandName = commandName;
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button.CommandArgument = commandArgument;
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WebControl webControl = button as WebControl;
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if (webControl != null && !String.IsNullOrEmpty(NumericButtonCssClass)) {
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webControl.CssClass = NumericButtonCssClass;
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}
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return button as Control;
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}
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private HyperLink CreateNumericLink(int pageIndex) {
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int pageNumber = pageIndex + 1;
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HyperLink link = new HyperLink();
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link.Text = pageNumber.ToString(CultureInfo.InvariantCulture);
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link.NavigateUrl = GetQueryStringNavigateUrl(pageNumber);
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if (!String.IsNullOrEmpty(NumericButtonCssClass)) {
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link.CssClass = NumericButtonCssClass;
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}
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return link;
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}
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private Control CreateNextPrevButton(string buttonText, string commandName, string commandArgument, string imageUrl) {
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IButtonControl button;
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switch (ButtonType) {
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case ButtonType.Link:
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button = new LinkButton();
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break;
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case ButtonType.Button:
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button = new Button();
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break;
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case ButtonType.Image:
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default:
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button = new ImageButton();
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((ImageButton)button).ImageUrl = imageUrl;
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((ImageButton)button).AlternateText = HttpUtility.HtmlDecode(buttonText);
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break;
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}
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button.Text = buttonText;
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button.CausesValidation = false;
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button.CommandName = commandName;
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button.CommandArgument = commandArgument;
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WebControl webControl = button as WebControl;
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if (webControl != null && !String.IsNullOrEmpty(NextPreviousButtonCssClass)) {
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webControl.CssClass = NextPreviousButtonCssClass;
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}
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return button as Control;
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}
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private HyperLink CreateNextPrevLink(string buttonText, int pageIndex, string imageUrl) {
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int pageNumber = pageIndex + 1;
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HyperLink link = new HyperLink();
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link.Text = buttonText;
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link.NavigateUrl = GetQueryStringNavigateUrl(pageNumber);
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link.ImageUrl = imageUrl;
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if (!String.IsNullOrEmpty(NextPreviousButtonCssClass)) {
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link.CssClass = NextPreviousButtonCssClass;
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}
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return link;
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}
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public override void CreateDataPagers(DataPagerFieldItem container, int startRowIndex, int maximumRows, int totalRowCount, int fieldIndex) {
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_startRowIndex = startRowIndex;
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_maximumRows = maximumRows;
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_totalRowCount = totalRowCount;
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if (String.IsNullOrEmpty(DataPager.QueryStringField)) {
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CreateDataPagersForCommand(container, fieldIndex);
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}
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else {
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CreateDataPagersForQueryString(container, fieldIndex);
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}
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}
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private void CreateDataPagersForCommand(DataPagerFieldItem container, int fieldIndex) {
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int currentPageIndex = _startRowIndex / _maximumRows;
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int firstButtonIndex = (_startRowIndex / (ButtonCount * _maximumRows)) * ButtonCount;
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int lastButtonIndex = firstButtonIndex + ButtonCount - 1;
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int lastRecordIndex = ((lastButtonIndex + 1) * _maximumRows) - 1;
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if (firstButtonIndex != 0) {
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container.Controls.Add(CreateNextPrevButton(PreviousPageText, DataControlCommands.PreviousPageCommandArgument, fieldIndex.ToString(CultureInfo.InvariantCulture), PreviousPageImageUrl));
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AddNonBreakingSpace(container);
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}
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for (int i = 0; i < ButtonCount && _totalRowCount > ((i + firstButtonIndex) * _maximumRows); i++) {
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if (i + firstButtonIndex == currentPageIndex) {
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Label pageNumber = new Label();
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pageNumber.Text = (i + firstButtonIndex + 1).ToString(CultureInfo.InvariantCulture);
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if (!String.IsNullOrEmpty(CurrentPageLabelCssClass)) {
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pageNumber.CssClass = CurrentPageLabelCssClass;
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}
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container.Controls.Add(pageNumber);
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}
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else {
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container.Controls.Add(CreateNumericButton((i + firstButtonIndex + 1).ToString(CultureInfo.InvariantCulture), fieldIndex.ToString(CultureInfo.InvariantCulture), (i + firstButtonIndex).ToString(CultureInfo.InvariantCulture)));
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}
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AddNonBreakingSpace(container);
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}
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if (lastRecordIndex < _totalRowCount - 1) {
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AddNonBreakingSpace(container);
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container.Controls.Add(CreateNextPrevButton(NextPageText, DataControlCommands.NextPageCommandArgument, fieldIndex.ToString(CultureInfo.InvariantCulture), NextPageImageUrl));
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AddNonBreakingSpace(container);
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}
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}
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private void CreateDataPagersForQueryString(DataPagerFieldItem container, int fieldIndex) {
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int currentPageIndex = _startRowIndex / _maximumRows;
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QueryStringHandled = true;
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int firstButtonIndex = (_startRowIndex / (ButtonCount * _maximumRows)) * ButtonCount;
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int lastButtonIndex = firstButtonIndex + ButtonCount - 1;
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int lastRecordIndex = ((lastButtonIndex + 1) * _maximumRows) - 1;
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if (firstButtonIndex != 0) {
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container.Controls.Add(CreateNextPrevLink(PreviousPageText, firstButtonIndex - 1, PreviousPageImageUrl));
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AddNonBreakingSpace(container);
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}
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for (int i = 0; i < ButtonCount && _totalRowCount > ((i + firstButtonIndex) * _maximumRows); i++) {
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if (i + firstButtonIndex == currentPageIndex) {
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Label pageNumber = new Label();
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pageNumber.Text = (i + firstButtonIndex + 1).ToString(CultureInfo.InvariantCulture);
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if (!String.IsNullOrEmpty(CurrentPageLabelCssClass)) {
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pageNumber.CssClass = CurrentPageLabelCssClass;
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}
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container.Controls.Add(pageNumber);
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}
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else {
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container.Controls.Add(CreateNumericLink(i + firstButtonIndex));
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}
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AddNonBreakingSpace(container);
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}
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if (lastRecordIndex < _totalRowCount - 1) {
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AddNonBreakingSpace(container);
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container.Controls.Add(CreateNextPrevLink(NextPageText, firstButtonIndex + ButtonCount, NextPageImageUrl));
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AddNonBreakingSpace(container);
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}
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}
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// Required for design-time support (DesignerPagerStyle)
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[SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")]
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public override bool Equals(object o) {
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NumericPagerField field = o as NumericPagerField;
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if (field != null) {
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if (String.Equals(field.ButtonCount, this.ButtonCount) &&
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field.ButtonType == this.ButtonType &&
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String.Equals(field.CurrentPageLabelCssClass, this.CurrentPageLabelCssClass) &&
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String.Equals(field.NextPageImageUrl, this.NextPageImageUrl) &&
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String.Equals(field.NextPageText, this.NextPageText) &&
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String.Equals(field.NextPreviousButtonCssClass, this.NextPreviousButtonCssClass) &&
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String.Equals(field.NumericButtonCssClass, this.NumericButtonCssClass) &&
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String.Equals(field.PreviousPageImageUrl, this.PreviousPageImageUrl) &&
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String.Equals(field.PreviousPageText, this.PreviousPageText)) {
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return true;
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}
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}
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return false;
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}
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[SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")]
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public override int GetHashCode() {
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return
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this.ButtonCount.GetHashCode() |
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this.ButtonType.GetHashCode() |
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this.CurrentPageLabelCssClass.GetHashCode() |
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this.NextPageImageUrl.GetHashCode() |
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this.NextPageText.GetHashCode() |
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this.NextPreviousButtonCssClass.GetHashCode() |
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this.NumericButtonCssClass.GetHashCode() |
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this.PreviousPageImageUrl.GetHashCode() |
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this.PreviousPageText.GetHashCode();
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}
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}
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}
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