FormDesigner.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / Design / FormDesigner.cs / 1305376 / FormDesigner.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.Design.MobileControls 
{ 
    using System;
    using System.Drawing; 
    using System.Collections;
    using System.ComponentModel;
    using System.ComponentModel.Design;
    using System.Diagnostics; 
    using System.Web.UI.Design.MobileControls.Util;
    using System.Web.UI.Design.MobileControls.Adapters; 
    using System.Web.UI.MobileControls; 

    using Microsoft.Win32; 

    /// 
    ///    
    ///       Provides design-time support for the  
    ///       mobile control.
    ///     
    ///  
    /// 
    [ 
        System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand,
        Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)
    ]
    [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.")] 
    internal class FormDesigner : MobileContainerDesigner
    { 
        private Form   _form; 
        private TemporaryBitmapFile _backgroundBmpFile = null;
        private static readonly Attribute[] _emptyAttrs = new Attribute[0]; 
        private const String _titlePropertyName = "Title";

        public override String ID
        { 
            get
            { 
                return base.ID; 
            }
 
            set
            {
                base.ID = value;
                ChangeBackgroundImage(); 
            }
        } 
 
        public virtual String Title
        { 
            get
            {
                return _form.Title;
            } 

            set 
            { 
                _form.Title = value;
                ChangeBackgroundImage(); 
            }
        }

        private bool ValidContainment 
        {
            get 
            { 
                return (ContainmentStatus == ContainmentStatus.AtTopLevel);
            } 
        }

        private void ChangeBackgroundImage()
        { 
            bool infoMode = false;
            String newMessage = GetErrorMessage(out infoMode); 
            OnBackgroundImageChange(newMessage, infoMode); 
        }
 
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            { 
                SystemEvents.UserPreferenceChanged -=
                    new UserPreferenceChangedEventHandler(this.OnUserPreferenceChanged); 
            } 

            base.Dispose(disposing); 
        }

        protected override String GetErrorMessage(out bool infoMode)
        { 
            infoMode = false;
 
            if (!DesignerAdapterUtil.InMobileUserControl(_form)) 
            {
                if (DesignerAdapterUtil.InUserControl(_form)) 
                {
                    infoMode = true;
                    return MobileControlDesigner._userControlWarningMessage;
                } 

                if (!DesignerAdapterUtil.InMobilePage(_form)) 
                { 
                    return SR.GetString(SR.MobileControl_MobilePageErrorMessage);
                } 
            }

            if (!ValidContainment)
            { 
                return SR.GetString(SR.MobileControl_TopPageContainmentErrorMessage);
            } 
 
            return null;
        } 

        /// 
        ///    
        ///       Initializes the designer using 
        ///       the specified component.
        ///     
        ///  
        /// 
        ///    The control element being designed. 
        /// 
        /// 
        ///    
        ///       This is called by the designer host to establish the component being 
        ///       designed.
        ///     
        ///  
        /// 
        public override void Initialize(IComponent component) 
        {
            Debug.Assert(component is Form,
                         "FormDesigner.Initialize - Invalid Form Control");
 
            // This must be called first in order to get properties from runtime control.
            base.Initialize(component); 
 
            _form = (Form) component;
 
            if (_form.DeviceSpecific != null) {
                _form.DeviceSpecific = null;
            }
 
            SystemEvents.UserPreferenceChanged +=
                new UserPreferenceChangedEventHandler(this.OnUserPreferenceChanged); 
        } 

        internal override void OnBackgroundImageChange(String message, bool infoMode) 
        {
            ImageCreator.CreateBackgroundImage(
                ref _backgroundBmpFile,
                _form.ID, 
                _form.Title,
                message, 
                infoMode, 
                GetDefaultSize().Width
            ); 

            SetBehaviorStyle("backgroundImage",
                "url(" + _backgroundBmpFile.Url + ")");
            SetBehaviorStyle( 
                "paddingTop",
                _backgroundBmpFile.UnderlyingBitmap.Height + 8 
            ); 
        }
 
        private void OnUserPreferenceChanged(Object sender, UserPreferenceChangedEventArgs e)
        {
            if (e.Category == UserPreferenceCategory.Color)
            { 
                bool infoMode;
                String newMessage = GetErrorMessage(out infoMode); 
                OnBackgroundImageChange(newMessage, infoMode); 
            }
        } 

        /// 
        ///   Adjust the appearance based on current status.
        ///  
        protected override void OnContainmentChanged()
        { 
            base.OnContainmentChanged(); 

            SetBehaviorStyle("marginTop", ValidContainment ? "5px" : "3px"); 
            SetBehaviorStyle("marginBottom", ValidContainment ? "5px" : "3px");
            SetBehaviorStyle("marginRight", ValidContainment ? "30%" : "5px");
        }
 
        protected override void PreFilterProperties(IDictionary properties)
        { 
            base.PreFilterProperties(properties); 

            PropertyDescriptor prop = (PropertyDescriptor)properties[_titlePropertyName]; 
            Debug.Assert(prop != null);
            properties[_titlePropertyName] =
                TypeDescriptor.CreateProperty(GetType(), prop, _emptyAttrs);
        } 

        protected override void SetControlDefaultAppearance() 
        { 
            base.SetControlDefaultAppearance();
 
            // Customized border style
            SetBehaviorStyle("borderStyle", "solid");
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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