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//------------------------------------------------------------------------------
// <copyright file="TableItemStyle.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.ComponentModel.Design;
using System.Globalization;
using System.Web;
using System.Web.Configuration;
using System.Web.UI;
/// <devdoc>
/// <para>Specifies the style of the table item.</para>
/// </devdoc>
public class TableItemStyle : Style {
/// <devdoc>
/// <para>Specifies the horizontal alignment property. This field is
/// constant.</para>
/// </devdoc>
internal const int PROP_HORZALIGN = 0x00010000;
/// <devdoc>
/// <para>Specifies the vertical alignment property. This field is
/// constant.</para>
/// </devdoc>
internal const int PROP_VERTALIGN = 0x00020000;
/// <devdoc>
/// <para>Specifies the
/// wrap property. This field is constant.</para>
/// </devdoc>
internal const int PROP_WRAP = 0x00040000;
/// <devdoc>
/// <para>Creates a new instance of the <see cref='System.Web.UI.WebControls.TableItemStyle'/> class.</para>
/// </devdoc>
public TableItemStyle() : base() {
}
/// <devdoc>
/// <para>
/// Creates a new instance of the <see cref='System.Web.UI.WebControls.TableItemStyle'/> class with the
/// specified state bag.
/// </para>
/// </devdoc>
public TableItemStyle(StateBag bag) : base(bag) {
}
private bool EnableLegacyRendering {
get {
return (RuntimeConfig.GetAppConfig().XhtmlConformance.Mode == XhtmlConformanceMode.Legacy);
}
}
/// <devdoc>
/// <para>Gets or sets the horizontal alignment of the table item.</para>
/// </devdoc>
[
WebCategory("Layout"),
DefaultValue(HorizontalAlign.NotSet),
WebSysDescription(SR.TableItem_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);
}
}
/// <devdoc>
/// <para>Gets or sets the vertical alignment of the table item.</para>
/// </devdoc>
[
WebCategory("Layout"),
DefaultValue(VerticalAlign.NotSet),
WebSysDescription(SR.TableItem_VerticalAlign),
NotifyParentProperty(true)
]
public virtual VerticalAlign VerticalAlign {
get {
if (IsSet(PROP_VERTALIGN)) {
return(VerticalAlign)(ViewState["VerticalAlign"]);
}
return VerticalAlign.NotSet;
}
set {
if (value < VerticalAlign.NotSet || value > VerticalAlign.Bottom) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["VerticalAlign"] = value;
SetBit(PROP_VERTALIGN);
}
}
/// <devdoc>
/// <para>Gets or sets a value indicating whether the cell content wraps within the cell.</para>
/// </devdoc>
[
WebCategory("Layout"),
DefaultValue(true),
WebSysDescription(SR.TableItemStyle_Wrap),
NotifyParentProperty(true)
]
public virtual bool Wrap {
get {
if (IsSet(PROP_WRAP)) {
return(bool)(ViewState["Wrap"]);
}
return true;
}
set {
ViewState["Wrap"] = value;
SetBit(PROP_WRAP);
}
}
/// <devdoc>
/// <para>Adds information about horizontal alignment, vertical alignment, and wrap to the list of attributes to render.</para>
/// </devdoc>
public override void AddAttributesToRender(HtmlTextWriter writer, WebControl owner) {
base.AddAttributesToRender(writer, owner);
if (!Wrap) {
if (IsControlEnableLegacyRendering(owner)) {
writer.AddAttribute(HtmlTextWriterAttribute.Nowrap, "nowrap");
}
else {
writer.AddStyleAttribute(HtmlTextWriterStyle.WhiteSpace, "nowrap");
}
}
HorizontalAlign hAlign = HorizontalAlign;
if (hAlign != HorizontalAlign.NotSet) {
TypeConverter hac = TypeDescriptor.GetConverter(typeof(HorizontalAlign));
writer.AddAttribute(HtmlTextWriterAttribute.Align, hac.ConvertToString(hAlign).ToLower(CultureInfo.InvariantCulture));
}
VerticalAlign vAlign = VerticalAlign;
if (vAlign != VerticalAlign.NotSet) {
TypeConverter hac = TypeDescriptor.GetConverter(typeof(VerticalAlign));
writer.AddAttribute(HtmlTextWriterAttribute.Valign, hac.ConvertToString(vAlign).ToLower(CultureInfo.InvariantCulture));
}
}
/// <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);
if (s is TableItemStyle) {
TableItemStyle ts = (TableItemStyle)s;
if (s.RegisteredCssClass.Length != 0) {
if (ts.IsSet(PROP_WRAP)) {
ViewState.Remove("Wrap");
ClearBit(PROP_WRAP);
}
}
else {
if (ts.IsSet(PROP_WRAP))
this.Wrap = ts.Wrap;
}
if (ts.IsSet(PROP_HORZALIGN))
this.HorizontalAlign = ts.HorizontalAlign;
if (ts.IsSet(PROP_VERTALIGN))
this.VerticalAlign = ts.VerticalAlign;
}
}
}
private bool IsControlEnableLegacyRendering(Control control) {
if (control != null) {
return control.EnableLegacyRendering;
}
else {
return EnableLegacyRendering;
}
}
/// <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);
if (s is TableItemStyle) {
TableItemStyle ts = (TableItemStyle)s;
// 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_WRAP) && !this.IsSet(PROP_WRAP))
this.Wrap = ts.Wrap;
}
if (ts.IsSet(PROP_HORZALIGN) && !this.IsSet(PROP_HORZALIGN))
this.HorizontalAlign = ts.HorizontalAlign;
if (ts.IsSet(PROP_VERTALIGN) && !this.IsSet(PROP_VERTALIGN))
this.VerticalAlign = ts.VerticalAlign;
}
}
}
/// <devdoc>
/// <para>
/// Clears out any defined style elements from the state bag.
/// </para>
/// </devdoc>
public override void Reset() {
if (IsSet(PROP_HORZALIGN))
ViewState.Remove("HorizontalAlign");
if (IsSet(PROP_VERTALIGN))
ViewState.Remove("VerticalAlign");
if (IsSet(PROP_WRAP))
ViewState.Remove("Wrap");
base.Reset();
}
/// <devdoc>
/// Only serialize if the Wrap property has changed. This means that we serialize "false"
/// if they were set to false in the designer.
/// </devdoc>
private void ResetWrap() {
ViewState.Remove("Wrap");
ClearBit(PROP_WRAP);
}
/// <devdoc>
/// Only serialize if the Wrap property has changed. This means that we serialize "false"
/// if they were set to false in the designer.
/// </devdoc>
private bool ShouldSerializeWrap() {
return IsSet(PROP_WRAP);
}
}
}
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