77 lines
3.0 KiB
C#
77 lines
3.0 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="CatalogZone.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.WebControls.WebParts {
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using System.Collections;
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using System.Collections.Specialized;
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using System.ComponentModel;
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using System.Drawing;
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using System.Globalization;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Web.Util;
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[
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Designer("System.Web.UI.Design.WebControls.WebParts.CatalogZoneDesigner, " + AssemblyRef.SystemDesign),
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SupportsEventValidation,
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]
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public class CatalogZone : CatalogZoneBase {
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private ITemplate _zoneTemplate;
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protected override CatalogPartCollection CreateCatalogParts() {
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CatalogPartCollection catalogParts = new CatalogPartCollection();
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if (_zoneTemplate != null) {
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// PERF: Instantiate the template into a special control, that does nothing when a child control
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// is added. This is more performant because the child control is never parented to the temporary
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// control, it's ID is never generated, etc.
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Control container = new NonParentingControl();
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_zoneTemplate.InstantiateIn(container);
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if (container.HasControls()) {
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foreach (Control control in container.Controls) {
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CatalogPart part = control as CatalogPart;
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if (part != null) {
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catalogParts.Add(part);
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}
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else {
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LiteralControl literal = control as LiteralControl;
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// Throw an exception if it is *not* a literal containing only whitespace
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// Don't throw an exception in the designer, since we want only the offending
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// control to render as an error block, not the whole CatalogZone.
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if (((literal == null) || (literal.Text.Trim().Length != 0)) && !DesignMode) {
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throw new InvalidOperationException(SR.GetString(SR.CatalogZone_OnlyCatalogParts, ID));
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}
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}
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}
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}
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}
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return catalogParts;
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}
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[
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Browsable(false),
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DefaultValue(null),
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PersistenceMode(PersistenceMode.InnerProperty),
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TemplateContainer(typeof(CatalogZone)),
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TemplateInstance(TemplateInstance.Single)
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]
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public virtual ITemplate ZoneTemplate {
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get {
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return _zoneTemplate;
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}
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set {
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InvalidateCatalogParts();
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_zoneTemplate = value;
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}
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}
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}
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}
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