Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WebForms / System / Web / UI / Design / WebParts / WebPartZoneDesigner.cs / 1 / WebPartZoneDesigner.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 WebPartZoneDesigner : WebPartZoneBaseDesigner { private static DesignerAutoFormatCollection _autoFormats; private WebPartZone _zone; private TemplateGroup _templateGroup; public override DesignerAutoFormatCollection AutoFormats { get { if (_autoFormats == null) { _autoFormats = CreateAutoFormats(AutoFormatSchemes.WEBPARTZONE_SCHEMES, delegate(DataRow schemeData) { return new WebPartZoneAutoFormat(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 { WebPartZone zone = (WebPartZone)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 (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(); WebPartEditableDesignerRegion region = new WebPartEditableDesignerRegion(zone, TemplateDefinition); region.IsSingleInstanceTemplate = true; region.Description = SR.GetString(SR.ContainerControlDesigner_RegionWatermark); regions.Add(region); } designTimeHtml = base.GetDesignTimeHtml(); } } 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.WebPartZoneDesigner_Empty)); } public override void Initialize(IComponent component) { VerifyInitializeArgument(component, typeof(WebPartZone)); base.Initialize(component); _zone = (WebPartZone)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 WebPartEditableDesignerRegion : TemplatedEditableDesignerRegion { private WebPartZoneBase _zone; public WebPartEditableDesignerRegion(WebPartZoneBase zone, TemplateDefinition templateDefinition) : base(templateDefinition) { _zone = zone; } public override ViewRendering GetChildViewRendering(Control control) { if (control == null) { throw new ArgumentNullException("control"); } DesignerWebPartChrome chrome = new DesignerWebPartChrome(_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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