EditorZoneDesigner.cs source code in C# .NET

                        Code:
                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WebForms / System / Web / UI / Design / WebParts / EditorZoneDesigner.cs / 1 / EditorZoneDesigner.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.Design.WebControls.WebParts { 
 
    using System.ComponentModel;
    using System.ComponentModel.Design; 
    using System.Data;
    using System.Design;
    using System.Diagnostics;
    using System.Globalization; 
    using System.IO;
    using System.Web.UI.Design; 
    using System.Web.UI.Design.WebControls; 
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts; 

    /// 
    /// 
    [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand, Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)] 
    public class EditorZoneDesigner : ToolZoneDesigner {
 
        private static DesignerAutoFormatCollection _autoFormats; 

        private EditorZone _zone; 
        private TemplateGroup _templateGroup;

        public override DesignerAutoFormatCollection AutoFormats {
            get { 
                if (_autoFormats == null) {
                    _autoFormats = CreateAutoFormats(AutoFormatSchemes.EDITORZONE_SCHEMES, 
                        delegate(DataRow schemeData) { return new EditorZoneAutoFormat(schemeData); }); 
                }
                return _autoFormats; 
            }
        }

        public override TemplateGroupCollection TemplateGroups { 
            get {
                TemplateGroupCollection groups = base.TemplateGroups; 
                if (_templateGroup == null) { 
                    _templateGroup = CreateZoneTemplateGroup();
                } 
                groups.Add(_templateGroup);
                return groups;
            }
        } 

        public override string GetDesignTimeHtml() { 
            return GetDesignTimeHtml(null); 
        }
 
        /// 
        /// Provides the layout html for the control in the designer, including regions.
        /// 
        public override string GetDesignTimeHtml(DesignerRegionCollection regions) { 
            string designTimeHtml;
 
            try { 
                EditorZone zone = (EditorZone)ViewControl;
 
                bool useRegions = UseRegions(regions, _zone.ZoneTemplate, zone.ZoneTemplate);

                // When there is an editable region, we want to use the regular control
                // rendering instead of the EmptyDesignTimeHtml 
                if (zone.ZoneTemplate == null && !useRegions) {
                    designTimeHtml = GetEmptyDesignTimeHtml(); 
                } 
                else {
                    ((ICompositeControlDesignerAccessor)zone).RecreateChildControls(); 
                    if (regions != null && useRegions) {
                        // If the tools supports editable regions, the initial rendering of the
                        // WebParts in the Zone is thrown away by the tool anyway, so we should clear
                        // the controls collection before rendering.  If we don't clear the controls 
                        // collection and a WebPart inside the Zone throws an exception when rendering,
                        // this would cause the whole Zone to render as an error, instead of just 
                        // the offending WebPart.  This also improves perf. 
                        zone.Controls.Clear();
 
                        EditorPartEditableDesignerRegion region = new EditorPartEditableDesignerRegion(zone, TemplateDefinition);
                        // Tells Venus that all controls inside the EditableRegion should be parented to the zone
                        region.Properties[typeof(Control)] = zone;
                        region.IsSingleInstanceTemplate = true; 
                        region.Description = SR.GetString(SR.ContainerControlDesigner_RegionWatermark);
                        regions.Add(region); 
                    } 
                    designTimeHtml = base.GetDesignTimeHtml();
                } 

                // Don't substitute the placeholder if this is the AutoFormat PreviewControl
                if (ViewInBrowseMode && zone.ID != EditorZoneAutoFormat.PreviewControlID) {
                    designTimeHtml = CreatePlaceHolderDesignTimeHtml(); 
                }
            } catch (Exception e) { 
                designTimeHtml = GetErrorDesignTimeHtml(e); 
            }
 
            return designTimeHtml;
        }

        ///  
        /// 
        /// Get the content for the specified region 
        ///  
        public override string GetEditableDesignerRegionContent(EditableDesignerRegion region) {
            Debug.Assert(region != null); 

            // Occasionally getting NullRef here in WebMatrix.  Maybe Zone is null?
            Debug.Assert(_zone != null);
            return ControlPersister.PersistTemplate(_zone.ZoneTemplate, (IDesignerHost)Component.Site.GetService(typeof(IDesignerHost))); 
        }
 
        protected override string GetEmptyDesignTimeHtml() { 
            return CreatePlaceHolderDesignTimeHtml(SR.GetString(SR.EditorZoneDesigner_Empty));
        } 

        public override void Initialize(IComponent component) {
            VerifyInitializeArgument(component, typeof(EditorZone));
            base.Initialize(component); 
            _zone = (EditorZone)component;
        } 
 
        /// 
        ///  
        /// Set the content for the specified region
        /// 
        public override void SetEditableDesignerRegionContent(EditableDesignerRegion region, string content) {
            Debug.Assert(region != null); 
            _zone.ZoneTemplate = ControlParser.ParseTemplate((IDesignerHost)Component.Site.GetService(typeof(IDesignerHost)), content);
            IsDirtyInternal = true; 
        } 

        private sealed class EditorPartEditableDesignerRegion : TemplatedEditableDesignerRegion { 
            private EditorZone _zone;

            public EditorPartEditableDesignerRegion(EditorZone zone, TemplateDefinition templateDefinition)
                : base(templateDefinition) { 
                _zone = zone;
            } 
 
            public override ViewRendering GetChildViewRendering(Control control) {
                if (control == null) { 
                    throw new ArgumentNullException("control");
                }

                DesignerEditorPartChrome chrome = new DesignerEditorPartChrome(_zone); 
                return chrome.GetViewRendering(control);
            } 
        } 
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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EditorZoneDesigner.cs source code in C# .NET

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