308 lines
12 KiB
C#
308 lines
12 KiB
C#
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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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using System;
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using System.Globalization;
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using System.IO;
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using System.Web;
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using System.Web.UI;
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using System.Web.UI.HtmlControls;
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using System.Web.Mobile;
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using RootMobile = System.Web.Mobile;
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using System.Web.UI.MobileControls;
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using System.Collections;
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using System.Collections.Specialized;
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using System.Text;
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using System.Security.Permissions;
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// We don't recompile this base class in the shipped source samples, as it
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// accesses some internal functionality and is a core utility (rather than an
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// extension itself).
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#if !COMPILING_FOR_SHIPPED_SOURCE
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namespace System.Web.UI.MobileControls.Adapters
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{
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/*
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* ControlAdapter base class.
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*
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* Copyright (c) 2000 Microsoft Corporation
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*/
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter"]/*' />
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[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
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[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
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[Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
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public abstract class ControlAdapter : IControlAdapter
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{
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private static readonly String[] LabelIDs = new String[] {
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RootMobile.SR.ControlAdapter_BackLabel,
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RootMobile.SR.ControlAdapter_GoLabel,
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RootMobile.SR.ControlAdapter_OKLabel,
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RootMobile.SR.ControlAdapter_MoreLabel,
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RootMobile.SR.ControlAdapter_OptionsLabel,
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RootMobile.SR.ControlAdapter_NextLabel,
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RootMobile.SR.ControlAdapter_PreviousLabel,
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RootMobile.SR.ControlAdapter_LinkLabel,
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RootMobile.SR.ControlAdapter_PhoneCallLabel
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};
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.BackLabel"]/*' />
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protected static readonly int BackLabel = 0;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.GoLabel"]/*' />
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protected static readonly int GoLabel = 1;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.OKLabel"]/*' />
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protected static readonly int OKLabel = 2;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.MoreLabel"]/*' />
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protected static readonly int MoreLabel = 3;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.OptionsLabel"]/*' />
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protected static readonly int OptionsLabel = 4;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.NextLabel"]/*' />
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protected static readonly int NextLabel = 5;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.PreviousLabel"]/*' />
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protected static readonly int PreviousLabel = 6;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.LinkLabel"]/*' />
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protected static readonly int LinkLabel = 7;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.CallLabel"]/*' />
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protected static readonly int CallLabel = 8;
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private MobileControl _control;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.Control"]/*' />
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public MobileControl Control
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{
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get
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{
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return _control;
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}
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set
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{
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_control = value;
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}
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.Page"]/*' />
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public virtual MobilePage Page
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{
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get
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{
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return Control.MobilePage;
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}
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set
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{
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// Do not expect to be called directly. Subclasses should
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// override this when needed.
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throw new Exception(
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SR.GetString(
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SR.ControlAdapterBasePagePropertyShouldNotBeSet));
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}
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.Device"]/*' />
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public virtual MobileCapabilities Device
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{
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get
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{
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return (MobileCapabilities)Page.Request.Browser;
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}
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.OnInit"]/*' />
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public virtual void OnInit(EventArgs e){}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.OnLoad"]/*' />
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public virtual void OnLoad(EventArgs e){}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.OnPreRender"]/*' />
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public virtual void OnPreRender(EventArgs e){}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.Render"]/*' />
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public virtual void Render(HtmlTextWriter writer)
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{
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RenderChildren(writer);
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.OnUnload"]/*' />
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public virtual void OnUnload(EventArgs e){}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.HandlePostBackEvent"]/*' />
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public virtual bool HandlePostBackEvent(String eventArgument)
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{
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return false;
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}
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// By default, always return false, so the control itself will handle
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// it.
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.LoadPostData"]/*' />
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public virtual bool LoadPostData(String key,
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NameValueCollection data,
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Object controlPrivateData,
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out bool dataChanged)
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{
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dataChanged = false;
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return false;
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.LoadAdapterState"]/*' />
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public virtual void LoadAdapterState(Object state)
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{
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.SaveAdapterState"]/*' />
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public virtual Object SaveAdapterState()
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{
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return null;
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.CreateTemplatedUI"]/*' />
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public virtual void CreateTemplatedUI(bool doDataBind)
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{
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// No device specific templated UI to create.
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Control.CreateDefaultTemplatedUI(doDataBind);
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}
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// convenience methods here
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.Style"]/*' />
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public Style Style
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{
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get
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{
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return Control.Style;
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}
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.RenderChildren"]/*' />
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protected void RenderChildren(HtmlTextWriter writer)
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{
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if (Control.HasControls())
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{
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foreach (Control child in Control.Controls)
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{
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child.RenderControl(writer);
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}
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}
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.VisibleWeight"]/*' />
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public virtual int VisibleWeight
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{
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get
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{
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return ControlPager.UseDefaultWeight;
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}
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}
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.ItemWeight"]/*' />
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public virtual int ItemWeight
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{
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get
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{
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return ControlPager.UseDefaultWeight;
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}
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}
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// The following method is used by PageAdapter subclasses of
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// ControlAdapter for determining the optimum page weight for
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// a given device. Algorithm is as follows:
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// 1) First look for the "optimumPageWeight" parameter set
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// for the device. If it exists, and can be converted
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// to an integer, use it.
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// 2) Otherwise, look for the "screenCharactersHeight" parameter.
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// If it exists, and can be converted to an integer, multiply
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// it by 100 and use the result.
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// 3) As a last resort, use the default provided by the calling
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// PageAdapter.
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.CalculateOptimumPageWeight"]/*' />
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protected virtual int CalculateOptimumPageWeight(int defaultPageWeight)
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{
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int optimumPageWeight = 0;
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// Pull OptimumPageWeight from the web.config parameter of the same
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// name, when present.
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String pageWeight = Device[Constants.OptimumPageWeightParameter];
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if (pageWeight != null)
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{
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try
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{
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optimumPageWeight = Convert.ToInt32(pageWeight, CultureInfo.InvariantCulture);
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}
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catch
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{
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optimumPageWeight = 0;
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}
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}
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if (optimumPageWeight <= 0)
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{
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// If OptimumPageWeight isn't established explicitly, attempt to
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// construct it as 100 * number of lines of characters.
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String numLinesStr = Device[Constants.ScreenCharactersHeightParameter];
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if (numLinesStr != null)
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{
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try
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{
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int numLines = Convert.ToInt32(numLinesStr, CultureInfo.InvariantCulture);
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optimumPageWeight = 100 * numLines;
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}
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catch
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{
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optimumPageWeight = 0;
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}
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}
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}
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if (optimumPageWeight <= 0)
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{
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optimumPageWeight = defaultPageWeight;
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}
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return optimumPageWeight;
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}
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private String[] _defaultLabels = null;
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/// <include file='doc\ControlAdapter.uex' path='docs/doc[@for="ControlAdapter.GetDefaultLabel"]/*' />
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protected String GetDefaultLabel(int labelID)
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{
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if ((labelID < 0) || (labelID >= LabelIDs.Length))
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{
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throw new ArgumentException(System.Web.Mobile.SR.GetString(
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System.Web.Mobile.SR.ControlAdapter_InvalidDefaultLabel));
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}
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MobilePage page = Page;
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if (page != null)
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{
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ControlAdapter pageAdapter = (ControlAdapter)page.Adapter;
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if (pageAdapter._defaultLabels == null)
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{
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pageAdapter._defaultLabels = new String[LabelIDs.Length];
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}
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String labelValue = pageAdapter._defaultLabels[labelID];
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if (labelValue == null)
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{
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labelValue = System.Web.Mobile.SR.GetString(LabelIDs[labelID]);
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pageAdapter._defaultLabels[labelID] = labelValue;
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}
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return labelValue;
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}
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else
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{
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return System.Web.Mobile.SR.GetString(LabelIDs[labelID]);
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}
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}
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}
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[Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
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internal class EmptyControlAdapter : ControlAdapter {
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internal EmptyControlAdapter() {}
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}
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}
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#endif
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