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//------------------------------------------------------------------------------
// <copyright file="HotSpot.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.Drawing.Design;
using System.Web.UI;
using System.Globalization;
/// <devdoc>
/// <para>Defines abstract class from which all HotSpot shapes must inherit.</para>
/// </devdoc>
[
TypeConverter(typeof(ExpandableObjectConverter))
]
public abstract class HotSpot : IStateManager {
private bool _isTrackingViewState;
private StateBag _viewState;
/// <devdoc>
/// <para>Gets or sets the keyboard shortcut key (AccessKey) for setting focus to the
/// HotSpot.</para>
/// </devdoc>
[
DefaultValue(""),
Localizable(true),
WebCategory("Accessibility"),
WebSysDescription(SR.HotSpot_AccessKey)
]
public virtual string AccessKey {
get {
string s = (string)ViewState["AccessKey"];
if (s != null) {
return s;
}
return String.Empty;
}
set {
// Valid values are null, String.Empty, and single character strings
if ((value != null) && (value.Length > 1)) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["AccessKey"] = value;
}
}
/// <devdoc>
/// <para>Gets or sets the tool tip displayed over the
/// hotspot and the text for device-specific display.</para>
/// </devdoc>
[
Localizable(true),
Bindable(true),
WebCategory("Behavior"),
DefaultValue(""),
WebSysDescription(SR.HotSpot_AlternateText),
NotifyParentProperty(true)
]
public virtual String AlternateText {
get {
object text = ViewState["AlternateText"];
return (text == null)? String.Empty : (string)text;
}
set {
ViewState["AlternateText"] = value;
}
}
/// <devdoc>
/// <para>Gets or sets the HotSpotMode to either postback or navigation.</para>
/// </devdoc>
[
WebCategory("Behavior"),
DefaultValue(HotSpotMode.NotSet),
WebSysDescription(SR.HotSpot_HotSpotMode),
NotifyParentProperty(true)
]
public virtual HotSpotMode HotSpotMode {
get {
object obj = ViewState["HotSpotMode"];
return (obj == null) ? HotSpotMode.NotSet : (HotSpotMode)obj;
}
set {
if (value < HotSpotMode.NotSet || value > HotSpotMode.Inactive) {
throw new ArgumentOutOfRangeException("value");
}
ViewState["HotSpotMode"] = value;
}
}
/// <devdoc>
/// <para>Gets or sets the argument for postback event.</para>
/// </devdoc>
[
Bindable(true),
WebCategory("Behavior"),
DefaultValue(""),
WebSysDescription(SR.HotSpot_PostBackValue),
NotifyParentProperty(true)
]
public String PostBackValue {
get {
object value = ViewState["PostBackValue"];
return (value == null)? String.Empty : (string)value;
}
set {
ViewState["PostBackValue"] = value;
}
}
/// <devdoc>
/// <para>Gets the markup language string representation of the shape name.</para>
/// </devdoc>
protected internal abstract string MarkupName {
get;
}
/// <devdoc>
/// <para>Gets or sets the navigation url.</para>
/// </devdoc>
[
Bindable(true),
WebCategory("Behavior"),
DefaultValue(""),
WebSysDescription(SR.HotSpot_NavigateUrl),
NotifyParentProperty(true),
UrlProperty(),
Editor("System.Web.UI.Design.UrlEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
]
public String NavigateUrl {
get {
object value = ViewState["NavigateUrl"];
return (value == null)? String.Empty : (string)value;
}
set {
ViewState["NavigateUrl"] = value;
}
}
/// <devdoc>
/// <para>
/// Gets or
/// sets the tab index of the HotSpot.</para>
/// </devdoc>
[
DefaultValue((short)0),
WebCategory("Accessibility"),
WebSysDescription(SR.HotSpot_TabIndex)
]
public virtual short TabIndex {
get {
object o = ViewState["TabIndex"];
if (o != null) {
return (short) o;
}
return (short)0;
}
set {
ViewState["TabIndex"] = value;
}
}
/// <devdoc>
/// <para>Gets or sets the name of the window for navigation.</para>
/// </devdoc>
[
WebCategory("Behavior"),
DefaultValue(""),
TypeConverter(typeof(TargetConverter)),
WebSysDescription(SR.HotSpot_Target),
NotifyParentProperty(true)
]
public virtual string Target {
get {
object value = ViewState["Target"];
return (value == null)? String.Empty : (string)value;
}
set {
ViewState["Target"] = value;
}
}
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
protected StateBag ViewState {
get {
if (_viewState == null) {
_viewState = new StateBag(false);
if (_isTrackingViewState) ((IStateManager)_viewState).TrackViewState();
}
return _viewState;
}
}
/// <devdoc>
/// <para>Returns a representation of the coordinates according to HTML standards.</para>
/// </devdoc>
public abstract string GetCoordinates();
internal void SetDirty() {
if (_viewState != null) {
_viewState.SetDirty(true);
}
}
public override string ToString () {
return GetType().Name;
}
#region IStatemanager implementation
/// <devdoc>
/// <para>Gets a value indicating whether a server control is tracking its view state changes.</para>
/// </devdoc>
protected virtual bool IsTrackingViewState {
get {
return _isTrackingViewState;
}
}
/// <devdoc>
/// <para>Restores view-state information that was saved by SaveViewState.</para>
/// </devdoc>
protected virtual void LoadViewState(object savedState) {
if (savedState != null) {
ViewState.LoadViewState(savedState);
}
}
/// <devdoc>
/// <para>Saves any server control view-state changes that have
/// occurred since the time the page was posted back to the server.</para>
/// </devdoc>
protected virtual object SaveViewState() {
if (_viewState != null) {
return _viewState.SaveViewState();
}
return null;
}
/// <devdoc>
/// <para>Causes the tracking of view-state changes to the server control.</para>
/// </devdoc>
protected virtual void TrackViewState() {
_isTrackingViewState = true;
if (_viewState != null) {
_viewState.TrackViewState();
}
}
// private implementation of IStateManager
/// <internalonly/>
bool IStateManager.IsTrackingViewState {
get {
return IsTrackingViewState;
}
}
/// <internalonly/>
void IStateManager.LoadViewState(object savedState) {
LoadViewState(savedState);
}
/// <internalonly/>
object IStateManager.SaveViewState() {
return SaveViewState();
}
/// <internalonly/>
void IStateManager.TrackViewState() {
TrackViewState();
}
#endregion
}
}
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