137 lines
4.2 KiB
C#
137 lines
4.2 KiB
C#
//How to set the _control
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//------------------------------------------------------------------------------
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// <copyright file="ControlAdapter.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.Adapters {
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using System;
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using System.ComponentModel;
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using System.Security.Permissions;
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/* Defines the properties, methods, and events shared by all server control
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* adapters in the Web Forms page framework.
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*/
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public abstract class ControlAdapter {
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private HttpBrowserCapabilities _browser = null;
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internal Control _control; //control associated with this adapter
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[
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Browsable(false),
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DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
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]
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protected Control Control {
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get {
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return _control;
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}
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}
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/* Indicates the page on which the associated control resides.
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*/
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[
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Browsable(false),
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DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
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]
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protected Page Page {
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get {
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if(Control != null)
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return Control.Page;
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return null;
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}
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}
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[
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Browsable(false),
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DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
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]
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protected PageAdapter PageAdapter {
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get {
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if(Control != null && Control.Page != null)
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return Control.Page.PageAdapter;
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return null;
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}
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}
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protected HttpBrowserCapabilities Browser {
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get {
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if (_browser == null) {
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if (Page.RequestInternal != null) {
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_browser = Page.RequestInternal.Browser;
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}
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else {
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/* VSWhidbey 83667: In post-cache substitution, Page.Request
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* would not be available. Then we try to
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* use the more expensive way to access the current
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* context and get the request handle.
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*/
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HttpContext context = HttpContext.Current;
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if (context != null && context.Request != null) {
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_browser = context.Request.Browser;
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}
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}
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}
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return _browser;
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}
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}
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protected internal virtual void OnInit(EventArgs e) {
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Control.OnInit(e);
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}
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protected internal virtual void OnLoad(EventArgs e) {
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Control.OnLoad(e);
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}
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protected internal virtual void OnPreRender(EventArgs e) {
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Control.OnPreRender(e);
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}
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protected internal virtual void Render(HtmlTextWriter writer) {
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//
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if(_control != null) {
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_control.Render(writer);
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}
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}
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protected virtual void RenderChildren(HtmlTextWriter writer) {
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if(_control != null) {
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_control.RenderChildren(writer);
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}
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}
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protected internal virtual void OnUnload(EventArgs e) {
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Control.OnUnload(e);
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}
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protected internal virtual void BeginRender(HtmlTextWriter writer) {
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writer.BeginRender();
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}
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protected internal virtual void CreateChildControls() {
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Control.CreateChildControls();
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}
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protected internal virtual void EndRender(HtmlTextWriter writer) {
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writer.EndRender();
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}
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protected internal virtual void LoadAdapterControlState(object state) {
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}
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protected internal virtual void LoadAdapterViewState(object state) {
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}
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protected internal virtual object SaveAdapterControlState() {
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return null;
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}
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protected internal virtual object SaveAdapterViewState() {
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return null;
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}
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}
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}
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