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//------------------------------------------------------------------------------
// <copyright file="PopOutPanel.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Drawing;
using System.Drawing.Design;
using System.Globalization;
using System.Web;
using System.Web.UI;
using System.ComponentModel;
/// <devdoc>
/// Constructs a panel with automatic scrolling
/// and relative positioning for use with the Menu control.
/// </devdoc>
internal sealed class PopOutPanel : Panel {
private Menu _owner;
private String _scrollerClass;
private Style _scrollerStyle;
private Style _style;
private PopOutPanelStyle _emptyPopOutPanelStyle;
public PopOutPanel(Menu owner, Style style) {
_owner = owner;
_style = style;
_emptyPopOutPanelStyle = new PopOutPanelStyle(null);
}
public override ScrollBars ScrollBars {
get {
return ScrollBars.None;
}
}
internal String ScrollerClass {
get {
return _scrollerClass;
}
set {
_scrollerClass = value;
}
}
internal Style ScrollerStyle {
get {
return _scrollerStyle;
}
set {
_scrollerStyle = value;
}
}
/// <devdoc>
/// Add positioning custom attributes.
/// </devdoc>
protected override void AddAttributesToRender(HtmlTextWriter writer) {
string oldCssClass = CssClass;
Style oldStyle = _style;
CssClass = String.Empty;
_style = null;
ControlStyle.Reset();
base.AddAttributesToRender(writer);
CssClass = oldCssClass;
_style = oldStyle;
// Non-configurable style attributes
RenderStyleAttributes(writer);
}
internal PopOutPanelStyle GetEmptyPopOutPanelStyle() {
return _emptyPopOutPanelStyle;
}
public override void RenderEndTag(HtmlTextWriter writer) {
if (!_owner.DesignMode) {
RenderScrollerAttributes(writer);
writer.AddAttribute(HtmlTextWriterAttribute.Id, ClientID + "Up");
writer.AddAttribute("onmouseover", "PopOut_Up(this)");
writer.AddAttribute("onmouseout", "PopOut_Stop(this)");
writer.RenderBeginTag(HtmlTextWriterTag.Div);
string scrollUpImageUrl = _owner.ScrollUpImageUrl;
if (scrollUpImageUrl.Length != 0) {
writer.AddAttribute(HtmlTextWriterAttribute.Src, _owner.ResolveClientUrl(scrollUpImageUrl));
}
else {
writer.AddAttribute(HtmlTextWriterAttribute.Src, _owner.GetImageUrl(Menu.ScrollUpImageIndex));
}
writer.AddAttribute(HtmlTextWriterAttribute.Alt, _owner.ScrollUpText);
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
RenderScrollerAttributes(writer);
writer.AddAttribute(HtmlTextWriterAttribute.Id, ClientID + "Dn");
writer.AddAttribute("onmouseover", "PopOut_Down(this)");
writer.AddAttribute("onmouseout", "PopOut_Stop(this)");
writer.RenderBeginTag(HtmlTextWriterTag.Div);
string scrollDownImageUrl = _owner.ScrollDownImageUrl;
if (scrollDownImageUrl.Length != 0) {
writer.AddAttribute(HtmlTextWriterAttribute.Src, _owner.ResolveClientUrl(scrollDownImageUrl));
}
else {
writer.AddAttribute(HtmlTextWriterAttribute.Src, _owner.GetImageUrl(Menu.ScrollDownImageIndex));
}
writer.AddAttribute(HtmlTextWriterAttribute.Alt, _owner.ScrollDownText);
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
}
base.RenderEndTag(writer);
}
private void RenderScrollerAttributes(HtmlTextWriter writer) {
if ((Page != null) && Page.SupportsStyleSheets) {
if (!String.IsNullOrEmpty(ScrollerClass)) {
writer.AddAttribute(HtmlTextWriterAttribute.Class, ScrollerClass + ' ' +
GetEmptyPopOutPanelStyle().RegisteredCssClass);
}
else {
writer.AddAttribute(HtmlTextWriterAttribute.Class, GetEmptyPopOutPanelStyle().RegisteredCssClass);
}
}
else {
if ((ScrollerStyle != null) && !ScrollerStyle.IsEmpty) {
ScrollerStyle.AddAttributesToRender(writer);
}
if (ScrollerStyle.BackColor.IsEmpty) {
writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundColor, "white");
}
writer.AddStyleAttribute(HtmlTextWriterStyle.Visibility, "hidden");
writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "none");
writer.AddStyleAttribute(HtmlTextWriterStyle.Position, "absolute");
writer.AddStyleAttribute(HtmlTextWriterStyle.Left, "0px");
writer.AddStyleAttribute(HtmlTextWriterStyle.Top, "0px");
}
writer.AddStyleAttribute(HtmlTextWriterStyle.TextAlign, "center");
}
private void RenderStyleAttributes(HtmlTextWriter writer) {
if (_style == null) {
if (!String.IsNullOrEmpty(CssClass)) {
writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClass);
}
else {
if (BackColor.IsEmpty) {
writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundColor, "white");
}
else {
writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundColor, ColorTranslator.ToHtml(BackColor));
}
if (!_owner.DesignMode) {
writer.AddStyleAttribute(HtmlTextWriterStyle.Visibility, "hidden");
writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "none");
writer.AddStyleAttribute(HtmlTextWriterStyle.Position, "absolute");
writer.AddStyleAttribute(HtmlTextWriterStyle.Left, "0px");
writer.AddStyleAttribute(HtmlTextWriterStyle.Top, "0px");
}
}
}
else {
if ((Page != null) && Page.SupportsStyleSheets) {
string styleClass = _style.RegisteredCssClass;
if (styleClass.Trim().Length > 0) {
writer.AddAttribute(HtmlTextWriterAttribute.Class,
(!String.IsNullOrEmpty(CssClass)) ?
styleClass + ' ' + CssClass:
styleClass);
return;
}
}
if (!String.IsNullOrEmpty(CssClass)) {
writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClass);
}
else {
_style.AddAttributesToRender(writer);
}
}
}
internal void SetInternalStyle(Style style) {
_style = style;
}
internal sealed class PopOutPanelStyle : SubMenuStyle {
private PopOutPanel _owner;
public PopOutPanelStyle(PopOutPanel owner) {
_owner = owner;
}
protected override void FillStyleAttributes(CssStyleCollection attributes, IUrlResolutionService urlResolver) {
if (BackColor.IsEmpty && ((_owner == null) || _owner.BackColor.IsEmpty)) {
attributes.Add(HtmlTextWriterStyle.BackgroundColor, "white");
}
attributes.Add(HtmlTextWriterStyle.Visibility, "hidden");
attributes.Add(HtmlTextWriterStyle.Display, "none");
attributes.Add(HtmlTextWriterStyle.Position, "absolute");
attributes.Add(HtmlTextWriterStyle.Left, "0px");
attributes.Add(HtmlTextWriterStyle.Top, "0px");
base.FillStyleAttributes(attributes, urlResolver);
}
}
}
}
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