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