585 lines
21 KiB
C#
585 lines
21 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="ObjectListDesigner.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.Design.MobileControls
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{
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.ComponentModel.Design;
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using System.Diagnostics;
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using System.Data;
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using System.Drawing;
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using System.Drawing.Design;
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using System.IO;
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using System.Text;
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using System.Web.UI;
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using System.Web.UI.Design;
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using System.Web.UI.MobileControls;
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using System.Web.UI.WebControls;
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using System.Windows.Forms;
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using System.Web.UI.MobileControls.Adapters;
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using System.Web.UI.Design.MobileControls.Adapters;
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using DataBinding = System.Web.UI.DataBinding;
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[
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System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand,
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Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)
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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 ObjectListDesigner : MobileTemplatedControlDesigner, IDataSourceProvider, IMobileDesigner
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{
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private DataTable _dummyDataTable;
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private DataTable _designTimeDataTable;
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private System.Web.UI.MobileControls.ObjectList _objectList;
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private DesignerVerbCollection _designerVerbs;
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private const String _dataSourcePropertyName = "DataSource";
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private const String _dataMemberPropertyName = "DataMember";
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private const int _headerFooterTemplates = 0;
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private const int _itemTemplates = 1;
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private const int _separatorTemplate = 2;
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private const int _numberOfTemplateFrames = 3;
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private static readonly String[][] _templateFrameNames =
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new String[][] {
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new String [] { Constants.HeaderTemplateTag, Constants.FooterTemplateTag },
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new String [] { Constants.ItemTemplateTag, Constants.AlternatingItemTemplateTag, Constants.ItemDetailsTemplateTag },
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new String [] { Constants.SeparatorTemplateTag },
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};
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private static readonly Attribute[] _emptyAttrs = new Attribute[0];
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/// <summary>
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/// <para>
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/// Initializes the designer.
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/// </para>
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/// </summary>
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/// <param name='component'>
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/// The control element being designed.
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/// </param>
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/// <remarks>
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/// <para>
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/// This is called by the designer host to establish the component being
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/// designed.
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/// </para>
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/// </remarks>
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/// <seealso cref='System.ComponentModel.Design.IDesigner'/>
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public override void Initialize(IComponent component)
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{
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Debug.Assert(component is System.Web.UI.MobileControls.ObjectList,
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"ObjectListDesigner.Initialize - Invalid ObjectList Control");
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_objectList = (System.Web.UI.MobileControls.ObjectList) component;
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base.Initialize(component);
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}
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protected override String[] GetTemplateFrameNames(int index)
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{
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Debug.Assert(index >= 0 & index <= _templateFrameNames.Length);
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return _templateFrameNames[index];
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}
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protected override TemplateEditingVerb[] GetTemplateVerbs()
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{
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TemplateEditingVerb[] templateVerbs = new TemplateEditingVerb[_numberOfTemplateFrames];
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templateVerbs[_headerFooterTemplates] = new TemplateEditingVerb(
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SR.GetString(SR.TemplateFrame_HeaderFooterTemplates),
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_headerFooterTemplates,
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this);
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templateVerbs[_itemTemplates] = new TemplateEditingVerb(
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SR.GetString(SR.TemplateFrame_ItemTemplates),
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_itemTemplates,
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this);
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templateVerbs[_separatorTemplate] = new TemplateEditingVerb(
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SR.GetString(SR.TemplateFrame_SeparatorTemplate),
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_separatorTemplate,
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this);
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return templateVerbs;
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}
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/// <summary>
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/// <para>
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/// Gets the HTML to be used for the design time representation
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/// of the control.
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/// </para>
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/// </summary>
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/// <returns>
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/// <para>
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/// The design time HTML.
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/// </para>
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/// </returns>
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protected override String GetDesignTimeNormalHtml()
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{
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int sampleRows = 5;
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bool dummyDataSource = false;
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String oldLabelField, oldTableFields;
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oldLabelField = _objectList.LabelField;
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oldTableFields = _objectList.TableFields;
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DesignerTextWriter htmlWriter = new DesignerTextWriter(true);
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if (_objectList.DeviceSpecific != null)
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{
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_objectList.DeviceSpecific.SetDesignerChoice(CurrentChoice);
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}
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IEnumerable designTimeDataSource = GetDesignTimeDataSource(sampleRows, out dummyDataSource);
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bool oldAutoGenerateFields = _objectList.AutoGenerateFields;
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if ((oldAutoGenerateFields == false) && (_objectList.Fields.Count == 0))
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{
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// ensure that AutoGenerateFields is true when we don't have
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// any fields defined, so we see atleast something at design time.
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_objectList.AutoGenerateFields = true;
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}
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// Replace original labelfield with empty string to ensure dummy datasource will be rendered
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if (dummyDataSource)
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{
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_objectList.LabelField = String.Empty;
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_objectList.TableFields = String.Empty;
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}
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try
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{
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_objectList.DataSource = designTimeDataSource;
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_objectList.DataBind();
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_objectList.Adapter.Render(htmlWriter);
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}
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finally
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{
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_objectList.DataSource = null;
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_objectList.AutoGenerateFields = oldAutoGenerateFields;
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if (dummyDataSource)
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{
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_objectList.LabelField = oldLabelField;
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_objectList.TableFields = oldTableFields;
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}
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// Remove controls created by databinding the DataSource
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_objectList.Controls.Clear();
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_objectList.InvalidateDisplayFieldIndices();
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}
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return htmlWriter.ToString();
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}
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/// <summary>
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/// <para>
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/// Represents the method that will handle the component change event.
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/// </para>
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/// </summary>
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/// <param name='sender'>
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/// The source of the event.
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/// </param>
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/// <param name=' e'>
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/// The <see cref='System.ComponentModel.Design.ComponentChangedEventArgs'/> that provides data about the event.
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/// </param>
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public override void OnComponentChanged(Object sender, ComponentChangedEventArgs e)
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{
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if (e.Member != null)
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{
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String memberName = e.Member.Name;
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if (memberName.Equals(_dataSourcePropertyName) ||
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memberName.Equals(_dataMemberPropertyName))
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{
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OnDataSourceChanged();
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}
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}
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base.OnComponentChanged(sender, e);
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}
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/////////////////////////////////////////////////////////////////////////
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// BEGIN OBJECTLIST DESIGNER DATASOURCE HANDLING
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/////////////////////////////////////////////////////////////////////////
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/// <summary>
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/// <para>
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/// Filter the properties to replace the runtime DataSource property
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/// descriptor with the designer's.
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/// </para>
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/// </summary>
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/// <param name='properties'>
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/// The set of properties to filter.
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/// </param>
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/// <seealso cref='IDesignerFilter'/>
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protected override void PreFilterProperties(IDictionary properties)
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{
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base.PreFilterProperties(properties);
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Type designerType = this.GetType();
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DesignerAdapterUtil.AddAttributesToPropertiesOfDifferentType(
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designerType,
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typeof(String),
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properties,
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_dataSourcePropertyName,
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new TypeConverterAttribute(typeof(DataSourceConverter)));
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DesignerAdapterUtil.AddAttributesToProperty(
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designerType,
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properties,
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_dataMemberPropertyName,
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_emptyAttrs);
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}
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public String DataMember
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{
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get
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{
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return _objectList.DataMember;
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}
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set
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{
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_objectList.DataMember = value;
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OnDataSourceChanged();
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}
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}
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/// <summary>
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/// <para>
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/// Gets or sets the data source property.
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/// </para>
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/// </summary>
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/// <value>
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/// <para>
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/// A string indicating the data source for the designer's control.
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/// </para>
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/// </value>
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/// <remarks>
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/// <para>
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/// Designer implementation of a DataSource property that operates on the
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/// DataSource property in the control's binding collection.
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/// </para>
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/// </remarks>
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public String DataSource
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{
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get
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{
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DataBinding binding = DataBindings[_dataSourcePropertyName];
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if (binding != null)
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{
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return binding.Expression;
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}
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return String.Empty;
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}
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set
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{
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if ((value == null) || (value.Length == 0))
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{
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DataBindings.Remove(_dataSourcePropertyName);
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}
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else
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{
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DataBinding binding = DataBindings[_dataSourcePropertyName];
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if (binding == null)
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{
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binding = new DataBinding(
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_dataSourcePropertyName,
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typeof(IEnumerable),
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value);
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}
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else
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{
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binding.Expression = value;
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}
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DataBindings.Add(binding);
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}
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OnDataSourceChanged();
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OnBindingsCollectionChanged(_dataSourcePropertyName);
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}
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}
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/// <summary>
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/// <para>
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/// Gets sample data matching the schema of the selected data source.
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/// </para>
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/// </summary>
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/// <param name='minimumRows'>
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/// The minimum rows of sample data the data source data should contain.
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/// </param>
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/// <param name='dummyDataSource'>
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/// Whether the data source being returned is a dummy data source.
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/// </param>
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/// <returns>
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/// <para>
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/// An IEnumerable containing a live data source for use at
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/// design time.
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/// </para>
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/// </returns>
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///
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private IEnumerable GetDesignTimeDataSource(int minimumRows, out bool dummyDataSource)
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{
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IEnumerable selectedDataSource = GetResolvedSelectedDataSource();
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return GetDesignTimeDataSource(selectedDataSource, minimumRows, out dummyDataSource);
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}
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/// <summary>
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/// <para>
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/// Gets sample data matching the schema of the selected data source.
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/// </para>
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/// </summary>
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/// <param name='selectedDataSource'>
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/// The selected data source to be used as a reference for the shape of the data.
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/// </param>
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/// <param name='minimumRows'>
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/// The minimum rows of sample data the data source data should contain.
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/// </param>
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/// <param name='dummyDataSource'>
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/// Whether the data source being returned is a dummy data source.
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/// </param>
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/// <returns>
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/// <para>
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/// An IEnumerable containing
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/// a live data source for use at design time.
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/// </para>
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/// </returns>
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///
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private IEnumerable GetDesignTimeDataSource(IEnumerable selectedDataSource, int minimumRows, out bool dummyDataSource)
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{
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DataTable dataTable = _designTimeDataTable;
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dummyDataSource = false;
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// use the datatable corresponding to the selected datasource if possible
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if (dataTable == null)
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{
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if (selectedDataSource != null)
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{
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_designTimeDataTable = DesignTimeData.CreateSampleDataTable(selectedDataSource);
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dataTable = _designTimeDataTable;
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}
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if (dataTable == null)
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{
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// fallback on a dummy datasource if we can't create a sample datatable
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if (_dummyDataTable == null)
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{
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_dummyDataTable = DesignTimeData.CreateDummyDataTable();
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}
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dataTable = _dummyDataTable;
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dummyDataSource = true;
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}
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}
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IEnumerable liveDataSource = DesignTimeData.GetDesignTimeDataSource(dataTable, minimumRows);
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return liveDataSource;
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}
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public IEnumerable GetResolvedSelectedDataSource()
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{
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IEnumerable selectedDataSource = null;
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DataBinding binding = DataBindings[_dataSourcePropertyName];
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if (binding != null)
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{
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selectedDataSource = DesignTimeData.GetSelectedDataSource(_objectList, binding.Expression, DataMember);
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}
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return selectedDataSource;
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}
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/// <summary>
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/// <para>
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/// Gets the selected data source component from the component's container.
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/// </para>
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/// </summary>
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/// <returns>
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/// <para>
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/// An IEnumerable with the
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/// selected data source, or <see langword='null'/> if a data source is not found, or if a data
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/// source with the same name does not exist.
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/// </para>
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/// </returns>
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/// <seealso cref='System.Web.UI.Design.IDataSourceProvider'/>
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public Object GetSelectedDataSource()
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{
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Object selectedDataSource = null;
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DataBinding binding = DataBindings[_dataSourcePropertyName];
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if (binding != null)
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{
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selectedDataSource = DesignTimeData.GetSelectedDataSource(_objectList, binding.Expression);
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}
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return selectedDataSource;
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}
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/// <summary>
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/// <para>
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/// Gets the template's container's data source.
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/// </para>
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/// </summary>
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/// <param name='templateName'>
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/// The name of the template to retrieve the data source for.
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/// </param>
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/// <returns>
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/// <para>
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/// An IEnumerable containing the data source or data sources available to
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/// the template's container.
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/// </para>
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/// </returns>
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public override IEnumerable GetTemplateContainerDataSource(String templateName)
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{
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return GetResolvedSelectedDataSource();
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}
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public override String GetTemplateContainerDataItemProperty(string templateName)
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{
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return "DataItem";
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}
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public override Type GetTemplatePropertyParentType(String templateName)
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{
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return typeof(MobileTemplatedControlDesigner.TemplateContainer);
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}
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/// <internalonly/>
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/// <summary>
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/// <para>
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/// Raises the DataSourceChanged event.
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/// </para>
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/// </summary>
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protected internal virtual void OnDataSourceChanged()
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{
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_designTimeDataTable = null;
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}
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public new void UpdateRendering()
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{
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_objectList.LabelStyle.Refresh();
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_objectList.CommandStyle.Refresh();
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base.UpdateRendering();
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}
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/////////////////////////////////////////////////////////////////////////
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// END OBJECTLIST DESIGNER DATASOURCE HANDLING
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/////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////
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// BEGIN DESIGNER VERBS
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/////////////////////////////////////////////////////////////////////////
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/// <summary>
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/// <para>
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/// The designer's collection of verbs.
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/// </para>
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/// </summary>
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/// <value>
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/// <para>
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/// An array of type <see cref='DesignerVerb'/> containing the verbs available to the
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/// designer.
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/// </para>
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/// </value>
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public override DesignerVerbCollection Verbs
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{
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get
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{
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if (null == _designerVerbs)
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{
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_designerVerbs = base.Verbs;
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_designerVerbs.Add(new DesignerVerb(SR.GetString(SR.PropertyBuilderVerb),
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new EventHandler(this.OnPropertyBuilder)));
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}
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Debug.Assert(_designerVerbs.Count == 2);
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_designerVerbs[0].Enabled = !this.InTemplateMode;
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_designerVerbs[1].Enabled = !this.InTemplateMode;
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return _designerVerbs;
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}
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}
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/////////////////////////////////////////////////////////////////////////
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// BEGIN OBJECTLIST DESIGNER EVENTHANDLERS
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/////////////////////////////////////////////////////////////////////////
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/// <summary>
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/// <para>
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/// Represents the method that will handle the property builder event.
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/// </para>
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/// </summary>
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/// <param name='sender'>
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/// The source of the event.
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/// </param>
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/// <param name=' e'>
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/// An EventArgs object that provides data about the event.
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/// </param>
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protected void OnPropertyBuilder(Object sender, EventArgs e)
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{
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InvokePropertyBuilder(0);
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}
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/// <summary>
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/// <para>
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/// Invokes the property builder beginning with the specified page.
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/// </para>
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/// </summary>
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/// <param name='initialPage'>
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/// The page to begin with.
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/// </param>
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protected internal void InvokePropertyBuilder(int initialPage)
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{
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IComponentChangeService changeService = null;
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bool result = false;
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changeService = (IComponentChangeService)GetService(typeof(IComponentChangeService));
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if (changeService != null)
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{
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try
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{
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changeService.OnComponentChanging(_objectList, null);
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}
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catch (CheckoutException ex)
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{
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if (ex == CheckoutException.Canceled)
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{
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return;
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}
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throw;
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}
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}
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try
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{
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ObjectListComponentEditor compEditor = new ObjectListComponentEditor(initialPage);
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result = compEditor.EditComponent(_objectList);
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}
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finally
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{
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if (changeService != null)
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{
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changeService.OnComponentChanged(_objectList, null, null, null);
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if (IMobileWebFormServices != null)
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{
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IMobileWebFormServices.ClearUndoStack();
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}
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}
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}
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}
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/////////////////////////////////////////////////////////////////////////
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// END STYLE DESIGNER EVENTHANDLERS
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/////////////////////////////////////////////////////////////////////////
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}
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}
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