351 lines
12 KiB
C#
351 lines
12 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="TableStyle.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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namespace System.Web.UI.WebControls {
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Globalization;
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using System.Reflection;
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using System.Web;
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using System.Web.UI;
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/// <devdoc>
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/// <para>Specifies the style of the table.</para>
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/// </devdoc>
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public class TableStyle : Style {
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// The following are marked internal so that WebPartMenuStyle (or other derived types) can access IsSet on them
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internal const int PROP_BACKIMAGEURL = 0x00010000;
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internal const int PROP_CELLPADDING = 0x00020000;
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internal const int PROP_CELLSPACING = 0x00040000;
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internal const int PROP_GRIDLINES = 0x00080000;
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internal const int PROP_HORZALIGN = 0x00100000;
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/// <devdoc>
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/// <para>Initializes a new instance of the <see cref='System.Web.UI.WebControls.TableStyle'/> class.</para>
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/// </devdoc>
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public TableStyle() : base() {
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}
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/// <devdoc>
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/// <para>
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/// Initializes a new instance of the <see cref='System.Web.UI.WebControls.TableStyle'/> class with the
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/// specified state bag information.
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/// </para>
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/// </devdoc>
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public TableStyle(StateBag bag) : base(bag) {
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}
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/// <devdoc>
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/// <para>Gets or sets the URL of the background image for the
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/// table. The image will be tiled if it is smaller than the table.</para>
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/// </devdoc>
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[
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WebCategory("Appearance"),
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DefaultValue(""),
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UrlProperty(),
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WebSysDescription(SR.TableStyle_BackImageUrl),
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NotifyParentProperty(true)
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]
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public virtual string BackImageUrl {
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get {
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if (IsSet(PROP_BACKIMAGEURL)) {
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return(string)(ViewState["BackImageUrl"]);
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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 == null) {
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throw new ArgumentNullException("value");
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}
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ViewState["BackImageUrl"] = value;
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SetBit(PROP_BACKIMAGEURL);
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}
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}
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/// <devdoc>
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/// <para>Gets or sets the distance between the border and the
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/// contents of the table cell.</para>
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/// </devdoc>
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[
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WebCategory("Appearance"),
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DefaultValue(-1),
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WebSysDescription(SR.TableStyle_CellPadding),
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NotifyParentProperty(true)
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]
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public virtual int CellPadding {
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get {
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if (IsSet(PROP_CELLPADDING)) {
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return(int)(ViewState["CellPadding"]);
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}
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return -1;
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}
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set {
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if (value < -1) {
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throw new ArgumentOutOfRangeException("value", SR.GetString(SR.TableStyle_InvalidCellPadding));
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}
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ViewState["CellPadding"] = value;
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SetBit(PROP_CELLPADDING);
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}
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}
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/// <devdoc>
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/// <para>Gets or sets the distance between table cells.</para>
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/// </devdoc>
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[
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WebCategory("Appearance"),
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DefaultValue(-1),
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WebSysDescription(SR.TableStyle_CellSpacing),
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NotifyParentProperty(true)
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]
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public virtual int CellSpacing {
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get {
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if (IsSet(PROP_CELLSPACING)) {
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return(int)(ViewState["CellSpacing"]);
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}
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return -1;
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}
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set {
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if (value < -1) {
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throw new ArgumentOutOfRangeException("value", SR.GetString(SR.TableStyle_InvalidCellSpacing));
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}
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ViewState["CellSpacing"] = value;
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SetBit(PROP_CELLSPACING);
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}
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}
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/// <devdoc>
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/// Gets or sets the gridlines property of the table.
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/// </devdoc>
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[
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WebCategory("Appearance"),
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DefaultValue(GridLines.None),
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WebSysDescription(SR.TableStyle_GridLines),
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NotifyParentProperty(true)
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]
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public virtual GridLines GridLines {
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get {
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if (IsSet(PROP_GRIDLINES)) {
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return(GridLines)(ViewState["GridLines"]);
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}
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return GridLines.None;
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}
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set {
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if (value < GridLines.None || value > GridLines.Both) {
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throw new ArgumentOutOfRangeException("value");
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}
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ViewState["GridLines"] = value;
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SetBit(PROP_GRIDLINES);
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}
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}
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/// <devdoc>
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/// <para>Gets or sets the horizontal alignment of the table within the page.</para>
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/// </devdoc>
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[
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WebCategory("Layout"),
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DefaultValue(HorizontalAlign.NotSet),
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WebSysDescription(SR.TableStyle_HorizontalAlign),
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NotifyParentProperty(true)
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]
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public virtual HorizontalAlign HorizontalAlign {
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get {
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if (IsSet(PROP_HORZALIGN)) {
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return(HorizontalAlign)(ViewState["HorizontalAlign"]);
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}
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return HorizontalAlign.NotSet;
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}
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set {
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if (value < HorizontalAlign.NotSet || value > HorizontalAlign.Justify) {
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throw new ArgumentOutOfRangeException("value");
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}
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ViewState["HorizontalAlign"] = value;
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SetBit(PROP_HORZALIGN);
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}
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}
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/// <internalonly/>
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/// <devdoc>
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/// <para> Adds information about the background
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/// image, callspacing, cellpadding, gridlines, and alignment to the list of attributes
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/// to render.</para>
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/// </devdoc>
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public override void AddAttributesToRender(HtmlTextWriter writer, WebControl owner) {
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base.AddAttributesToRender(writer, owner);
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int n = CellSpacing;
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if (n >= 0) {
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writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing, n.ToString(NumberFormatInfo.InvariantInfo));
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if (n == 0) {
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writer.AddStyleAttribute(HtmlTextWriterStyle.BorderCollapse, "collapse");
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}
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}
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n = CellPadding;
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if (n >= 0) {
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writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding, n.ToString(NumberFormatInfo.InvariantInfo));
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}
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HorizontalAlign align = HorizontalAlign;
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if (align != HorizontalAlign.NotSet) {
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string alignValue = "Justify";
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switch (align) {
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case HorizontalAlign.Left:
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alignValue = "Left";
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break;
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case HorizontalAlign.Center:
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alignValue = "Center";
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break;
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case HorizontalAlign.Right:
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alignValue = "Right";
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break;
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case HorizontalAlign.Justify:
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alignValue = "Justify";
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break;
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}
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writer.AddAttribute(HtmlTextWriterAttribute.Align, alignValue);
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}
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GridLines gridLines = GridLines;
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if (gridLines != GridLines.None) {
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string rules = String.Empty;
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switch (GridLines) {
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case GridLines.Both:
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rules = "all";
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break;
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case GridLines.Horizontal:
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rules = "rows";
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break;
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case GridLines.Vertical:
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rules = "cols";
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break;
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}
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writer.AddAttribute(HtmlTextWriterAttribute.Rules, rules);
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}
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}
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/// <internalonly/>
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/// <devdoc>
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/// <para>Copies non-blank elements from the specified style, overwriting existing
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/// style elements if necessary.</para>
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/// </devdoc>
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public override void CopyFrom(Style s) {
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if (s != null && !s.IsEmpty) {
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base.CopyFrom(s);
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TableStyle ts = s as TableStyle;
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if (ts != null) {
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// Only copy the BackImageUrl if it isn't in the source Style's registered CSS class
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if (s.RegisteredCssClass.Length != 0) {
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if (ts.IsSet(PROP_BACKIMAGEURL)) {
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ViewState.Remove("BackImageUrl");
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ClearBit(PROP_BACKIMAGEURL);
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}
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}
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else {
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if (ts.IsSet(PROP_BACKIMAGEURL))
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this.BackImageUrl = ts.BackImageUrl;
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}
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if (ts.IsSet(PROP_CELLPADDING))
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this.CellPadding = ts.CellPadding;
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if (ts.IsSet(PROP_CELLSPACING))
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this.CellSpacing = ts.CellSpacing;
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if (ts.IsSet(PROP_GRIDLINES))
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this.GridLines = ts.GridLines;
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if (ts.IsSet(PROP_HORZALIGN))
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this.HorizontalAlign = ts.HorizontalAlign;
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}
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}
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}
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/// <internalonly/>
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protected override void FillStyleAttributes(CssStyleCollection attributes, IUrlResolutionService urlResolver) {
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base.FillStyleAttributes(attributes, urlResolver);
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string s = BackImageUrl;
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if (s.Length != 0) {
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if (urlResolver != null) {
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s = urlResolver.ResolveClientUrl(s);
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}
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attributes.Add(HtmlTextWriterStyle.BackgroundImage, s);
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}
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}
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/// <internalonly/>
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/// <devdoc>
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/// <para>Copies non-blank elements from the specified style, but will not overwrite
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/// any existing style elements.</para>
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/// </devdoc>
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public override void MergeWith(Style s) {
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if (s != null && !s.IsEmpty) {
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if (IsEmpty) {
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// merge into an empty style is equivalent to a copy,
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// which is more efficient
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CopyFrom(s);
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return;
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}
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base.MergeWith(s);
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TableStyle ts = s as TableStyle;
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if (ts != null) {
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// Since we're already copying the registered CSS class in base.MergeWith, we don't
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// need to any attributes that would be included in that class.
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if (s.RegisteredCssClass.Length == 0) {
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if (ts.IsSet(PROP_BACKIMAGEURL) && !this.IsSet(PROP_BACKIMAGEURL))
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this.BackImageUrl = ts.BackImageUrl;
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}
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if (ts.IsSet(PROP_CELLPADDING) && !this.IsSet(PROP_CELLPADDING))
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this.CellPadding = ts.CellPadding;
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if (ts.IsSet(PROP_CELLSPACING) && !this.IsSet(PROP_CELLSPACING))
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this.CellSpacing = ts.CellSpacing;
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if (ts.IsSet(PROP_GRIDLINES) && !this.IsSet(PROP_GRIDLINES))
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this.GridLines = ts.GridLines;
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if (ts.IsSet(PROP_HORZALIGN) && !this.IsSet(PROP_HORZALIGN))
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this.HorizontalAlign = ts.HorizontalAlign;
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}
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}
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}
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/// <internalonly/>
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/// <devdoc>
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/// <para>Clears out any defined style elements from the state bag.</para>
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/// </devdoc>
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public override void Reset() {
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if (IsSet(PROP_BACKIMAGEURL))
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ViewState.Remove("BackImageUrl");
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if (IsSet(PROP_CELLPADDING))
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ViewState.Remove("CellPadding");
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if (IsSet(PROP_CELLSPACING))
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ViewState.Remove("CellSpacing");
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if (IsSet(PROP_GRIDLINES))
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ViewState.Remove("GridLines");
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if (IsSet(PROP_HORZALIGN))
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ViewState.Remove("HorizontalAlign");
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base.Reset();
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}
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}
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}
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