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Cómo: Utilizar servicios y listas de acciones con diseñadores de controles
.NET Framework 4
<?xml version="1.0" encoding="utf-8" ?>
<styles>
<style name="BackColor" value="red"></style>
<style name="ForeColor" value="white"></style>
</styles>
<?xml version="1.0" encoding="utf-8" ?>
<styles>
<style name="BackColor" value="blue"></style>
<style name="ForeColor" value="white"></style>
</styles>
<?xml version="1.0" encoding="utf-8" ?>
<styles>
<style name="BackColor" value="green"></style>
<style name="ForeColor" value="white"></style>
</styles>
<%@ page language="VB" %> <%@ register tagprefix="aspSample" assembly="DesignerServicesAndListsVB" namespace="Samples.AspNet.VB.Controls" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>Designer Samples</title> </head> <body> <form id="form1" runat="server"> <p style="font-family:tahoma;font-size:larger; font-weight:bold"> Using Action Lists and Designer Host Services</p> <div style="font-family:tahoma;font-size:x-small"> <span style="font-size: 10pt">Control #1 (ControlWithStyleTasksDesigner): PanelContainerDesigner using a DesignerActionList, which obtains a list of XML files in the project and sets the style using the XML element definitions.</span><p /> </div> <aspSample:ControlWithStyleTasks id="ctl1" runat="server" backcolor="Red" forecolor="White"> Hello there.</aspSample:ControlWithStyleTasks> <br /> <div style="font-family:tahoma;font-size:x-small"> <span style="font-size: 10pt">Control #2 (ControlWithConfigurationSettingDesigner): PanelContainerDesigner using configuration settings to obtain the FrameCaption value.</span><p /> </div> <aspSample:ControlWithConfigurationSetting id="ctl2" runat="server"> Hello There </aspSample:ControlWithConfigurationSetting> <br /> <div style="font-family:tahoma;font-size:x-small"> <span style="font-size: 10pt">Control #3 (ControlWithButtonTasksDesigner): PanelContainerDesigner using a smart-task action item to insert a new button to the Web Form.</span><p /> </div> <aspSample:ControlWithButtonTasks id="ctl3" runat="server"> Hello There </aspSample:ControlWithButtonTasks> </form> </body> </html>
<%@ page language="C#" %> <%@ register tagprefix="aspSample" assembly="DesignerServicesAndListsCS" namespace="Samples.AspNet.CS.Controls" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>Designer Samples</title> </head> <body> <form id="form1" runat="server"> <p style="font-family:tahoma;font-size:larger; font-weight:bold"> Using Action Lists and Designer Host Services</p> <div style="font-family:tahoma;font-size:x-small"> <span style="font-size: 10pt">Control #1 (ControlWithStyleTasksDesigner): PanelContainerDesigner using a DesignerActionList, which obtains a list of XML files in the project and sets the style using the XML element definitions.</span><p /> </div> <aspSample:ControlWithStyleTasks id="ctl1" runat="server" backcolor="Red" forecolor="White"> Hello there.</aspSample:ControlWithStyleTasks> <br /> <div style="font-family:tahoma;font-size:x-small"> <span style="font-size: 10pt">Control #2 (ControlWithConfigurationSettingDesigner): PanelContainerDesigner using configuration settings to obtain the FrameCaption value.</span><p /> </div> <aspSample:ControlWithConfigurationSetting id="ctl2" runat="server"> Hello There </aspSample:ControlWithConfigurationSetting> <br /> <div style="font-family:tahoma;font-size:x-small"> <span style="font-size: 10pt">Control #3 (ControlWithButtonTasksDesigner): PanelContainerDesigner using a smart-task action item to insert a new button to the Web Form.</span><p /> </div> <aspSample:ControlWithButtonTasks id="ctl3" runat="server"> Hello There </aspSample:ControlWithButtonTasks> </form> </body> </html>
Imports System Imports System.Collections Imports System.ComponentModel Imports System.ComponentModel.Design Imports System.Diagnostics Imports System.Drawing Imports System.IO Imports System.Text Imports System.Web.UI Imports System.Web.UI.Design Imports System.Web.UI.Design.WebControls Imports System.Web.UI.WebControls Imports System.Reflection Imports System.Xml Imports System.Configuration Namespace Samples.AspNet.VB.Controls ' This region-based control renders the content of an XML file. <Designer(GetType(ControlWithStyleTasksDesigner))> _ <ToolboxData("<{0}:ControlWithStyleTasks runat=server>" _ & "</{0}:ControlWithStyleTasks>")> _ Public Class ControlWithStyleTasks Inherits Panel End Class <Designer(GetType(ControlWithConfigurationSettingDesigner))> _ <ToolboxData("<{0}:ControlWithConfigurationSetting runat=server " _ & "width=100%></{0}:ControlWithConfigurationSetting>")> _ Public Class ControlWithConfigurationSetting Inherits Panel End Class <Designer(GetType(ControlWithButtonTasksDesigner))> _ <ToolboxData("<{0}:ControlWithButtonTasks runat=server " _ & "width=100%></{0}:ControlWithButtonTasks>")> _ Public Class ControlWithButtonTasks Inherits Panel End Class ' Declare a custom button to add dynamically at design time. Public Class NewButton Inherits Button Public Sub New() [Text] = "NewButton" End Sub End Class ' This control designer is used to read xml files from the project. <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _ Public Class ControlWithStyleTasksDesigner Inherits PanelContainerDesigner Private _style As Style = Nothing ' Add the caption by default. Note that the caption will ' only appear if the Web server control allows ' child controls rather than properties. Public Overrides ReadOnly Property FrameCaption() _ As String Get Return "Container getting styles from the project item." End Get End Property Public Overrides ReadOnly Property FrameStyle() As Style Get If _style Is Nothing Then _style = New Style() _style.Font.Name = "Verdana" _style.Font.Size = New FontUnit("XSmall") _style.BackColor = Color.LightGreen _style.ForeColor = Color.Black End If Return _style End Get End Property ' Create a convenience field for the control. Private myControl As ControlWithStyleTasks Public Overrides Sub Initialize(ByVal component _ As IComponent) ' Create the convenience control. MyBase.Initialize(component) myControl = CType(component, ControlWithStyleTasks) End Sub ' The following section creates a designer action list. ' Add the specific action list for this control. The ' procedure here depends upon the specific order for ' the list to be added, but always add the base. Public Overrides ReadOnly Property ActionLists() _ As DesignerActionListCollection Get Dim newActionLists As New DesignerActionListCollection() newActionLists.AddRange(MyBase.ActionLists) newActionLists.Add(New MyList(Me)) Return newActionLists End Get End Property Private _styleConfigPhysicalFile As String = "" Protected Property StyleConfigurationFile() As String Get Return _styleConfigPhysicalFile End Get Set(ByVal value As String) Dim styleConfigPhysicalFilePath As String = String.Empty If value.Length > 0 Then ' Access the folder and look for the Control.xml file; ' then obtain its physical path to use to set styles ' for this control and control designer. Obtain the ' actual file and its physical path from WebApplication. Dim webApp As IWebApplication = _ CType(Component.Site. _ GetService(GetType(IWebApplication)), IWebApplication) If Not (webApp Is Nothing) Then ' Look for the project items from the root. Dim dataFileProjectItem As IProjectItem = _ webApp.GetProjectItemFromUrl(("~/" + value)) If Not (dataFileProjectItem Is Nothing) Then _styleConfigPhysicalFile = value styleConfigPhysicalFilePath = _ dataFileProjectItem.PhysicalPath End If End If End If ' Get the styles from the XML file. SetControlStyleFromConfiguration( _ styleConfigPhysicalFilePath) End Set End Property ' Open the xml document and set control properties directly. Private Sub SetControlStyleFromConfiguration(ByVal _ path As String) If path Is Nothing OrElse path = String.Empty Then Return End If Dim wc As WebControl = CType(Component, WebControl) If wc Is Nothing Then Return End If Dim xmlDoc As New XmlDocument() xmlDoc.Load(path) Dim stylesList As XmlNodeList = _ xmlDoc.GetElementsByTagName("style") Dim i As Integer For i = 0 To stylesList.Count - 1 If stylesList(i).Attributes("name").Value = _ "BackColor" Then Dim pd As PropertyDescriptor = _ TypeDescriptor.GetProperties(wc)("BackColor") If Not (pd Is Nothing) Then pd.SetValue(wc, Color.FromName(stylesList(i). _ Attributes("value").Value)) End If End If If stylesList(i).Attributes("name").Value = _ "ForeColor" Then Dim pd As PropertyDescriptor = _ TypeDescriptor.GetProperties(wc)("ForeColor") If Not (pd Is Nothing) Then pd.SetValue(wc, Color.FromName(stylesList(i). _ Attributes("value").Value)) End If End If Next i End Sub ' Create the action list for this control. Private Class MyList Inherits DesignerActionList Private _parent As ControlWithStyleTasksDesigner Public Sub New(ByVal parent As ControlWithStyleTasksDesigner) MyBase.New(parent.Component) _parent = parent End Sub <TypeConverter(GetType(FileListTypeConverter))> _ Public Property ConfigureControlStyle() As String Get Return _parent.StyleConfigurationFile End Get Set(ByVal value As String) _parent.StyleConfigurationFile = value End Set End Property ' Provide the list of sorted action items for the host. ' Note that you can define the items through constructors ' or through metadata on the method or property items. Public Overrides Function GetSortedActionItems() _ As DesignerActionItemCollection Dim items As New DesignerActionItemCollection() items.Add(New DesignerActionTextItem("Configuration", "Select")) items.Add(New DesignerActionPropertyItem("ConfigureControlStyle", _ "Configure XML", _ "Select", _ String.Empty)) Return items End Function ' The type converter needs to be generated with a standard ' collection of items from the project. Private Class FileListTypeConverter Inherits TypeConverter Public Overrides Function GetStandardValues(ByVal context _ As ITypeDescriptorContext) As StandardValuesCollection Dim myList As MyList = CType(context.Instance, MyList) Dim webApp As IWebApplication = CType(myList._parent. _ Component.Site.GetService(GetType(IWebApplication)), _ IWebApplication) Dim xmlFiles As New ArrayList() Dim rootItem As IFolderProjectItem = _ CType(webApp.RootProjectItem, IFolderProjectItem) Dim item As IProjectItem For Each item In rootItem.Children If String.Equals( _ Path.GetExtension(item.Name), ".xml", _ StringComparison.CurrentCultureIgnoreCase) Then xmlFiles.Add(item.Name) End If Next item Return New StandardValuesCollection(xmlFiles) End Function Public Overrides Function GetStandardValuesExclusive( _ ByVal context As ITypeDescriptorContext) As Boolean Return False End Function Public Overrides Function GetStandardValuesSupported( _ ByVal context As ITypeDescriptorContext) As Boolean Return True End Function End Class End Class End Class ' This control designer is used to obtain the ' configuration setting for the title. Public Class ControlWithConfigurationSettingDesigner Inherits PanelContainerDesigner Public Sub New() End Sub Private _style As Style = Nothing Public Overrides ReadOnly Property FrameCaption() _ As String Get Dim title As String = String.Empty Dim webApp As IWebApplication webApp = CType(Component.Site.GetService( _ GetType(IWebApplication)), IWebApplication) If Not (webApp Is Nothing) Then ' Get the Configuration API. Dim config As System.Configuration.Configuration config = webApp.OpenWebConfiguration(True) If Not (config Is Nothing) Then Dim settingsSection As AppSettingsSection settingsSection = config.AppSettings If Not (settingsSection Is Nothing) Then title = " .... " & _ settingsSection.Settings("ContainerControlTitle").ToString() _ & " ..... " End If End If End If Return title End Get End Property Public Overrides ReadOnly Property FrameStyle() As Style Get If _style Is Nothing Then _style = New Style() _style.Font.Name = "Verdana" _style.Font.Size = New FontUnit("XSmall") _style.BackColor = Color.LightGreen _style.ForeColor = Color.Black End If Return _style End Get End Property End Class ' This control designer reads from the project file. <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _ Public Class ControlWithButtonTasksDesigner Inherits PanelContainerDesigner Public Sub New() End Sub Private _style As Style = Nothing ' Add the caption by default. Note that the caption ' will only appear if the Web server control ' allows child controls rather than properties. Public Overrides ReadOnly Property FrameCaption() _ As String Get Return "Container adding controls to the document." End Get End Property Public Overrides ReadOnly Property FrameStyle() _ As Style Get If _style Is Nothing Then _style = New Style() _style.Font.Name = "Verdana" _style.Font.Size = New FontUnit("XSmall") _style.BackColor = Color.LightGreen _style.ForeColor = Color.Black End If Return _style End Get End Property ' The following section creates a designer action list. ' Add the specific action list for this control. The ' procedure here depends upon the specific order for the ' list to be added, but always add the base. Public Overrides ReadOnly Property ActionLists() _ As DesignerActionListCollection Get Dim newActionLists As New DesignerActionListCollection() newActionLists.AddRange(MyBase.ActionLists) newActionLists.Add(New ControlWithButtonTasksList(Me)) Return newActionLists End Get End Property Public Sub AddButton() ' Add a standard button. Dim b As New Button() b.Text = "New Button" RootDesigner.AddControlToDocument(b, Nothing, ControlLocation.Last) End Sub 'AddButton Public Sub AddNewButton() ' Add your custom button. Dim b As New NewButton() b.Text = "New custom button" ' For buttons defined in a different assembly, add the ' register directive for the referenced assembly. ' By default, this goes to the document, unless ' already defined in the document or in configuration. Dim wfrm As WebFormsReferenceManager = RootDesigner.ReferenceManager wfrm.RegisterTagPrefix(b.GetType()) RootDesigner.AddControlToDocument(b, Nothing, ControlLocation.First) End Sub ' Create the action list for this control. Private Class ControlWithButtonTasksList Inherits DesignerActionList Private _parent As ControlWithButtonTasksDesigner Public Sub New(ByVal parent As ControlWithButtonTasksDesigner) MyBase.New(parent.Component) _parent = parent End Sub Public Sub AddButton() _parent.AddButton() End Sub Public Sub AddNewButton() _parent.AddNewButton() End Sub ' Provide the list of sorted action items for the host. Public Overrides Function GetSortedActionItems() _ As DesignerActionItemCollection Dim items As New DesignerActionItemCollection() items.Add(New DesignerActionTextItem("Add Control", "Add")) items.Add(New DesignerActionMethodItem(Me, _ "AddButton", _ "Add a Button", _ "Add", _ String.Empty, _ False)) items.Add(New DesignerActionMethodItem(Me, _ "AddNewButton", _ "Add a custom Button", _ "Add", _ String.Empty, _ False)) Return items End Function End Class End Class End Namespace
namespace Samples.AspNet.CS.Controls { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Diagnostics; using System.Drawing; using System.IO; using System.Text; using System.Web.UI; using System.Web.UI.Design; using System.Web.UI.Design.WebControls; using System.Web.UI.WebControls; using System.Reflection; using System.Xml; using System.Configuration; // This region-based control renders the content of an XML file. [ Designer(typeof(ControlWithStyleTasksDesigner)), ToolboxData("<{0}:ControlWithStyleTasks runat=\"server\" " + "width=\"100%\"></{0}:ControlWithStyleTasks>") ] public class ControlWithStyleTasks : Panel { } [ Designer(typeof(ControlWithConfigurationSettingDesigner)), ToolboxData("<{0}:ControlWithConfigurationSetting runat=\"server\" " + "width=\"100%\"></{0}:ControlWithConfigurationSetting>") ] public class ControlWithConfigurationSetting : Panel { } [ Designer(typeof(ControlWithButtonTasksDesigner)), ToolboxData("<{0}:ControlWithButtonTasks runat=\"server\" " + "width=\"100%\"></{0}:ControlWithButtonTasks>") ] public class ControlWithButtonTasks : Panel { } // Declare a custom button to add dynamically at design time. public class NewButton : Button { public NewButton() { Text = "NewButton"; } } // This control designer is used to read xml files from the project. [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] public class ControlWithStyleTasksDesigner : PanelContainerDesigner { private Style _style = null; public override string FrameCaption { get { return "Container getting styles from the project item."; } } public override Style FrameStyle { get { if (_style == null) { _style = new Style(); _style.Font.Name = "Verdana"; _style.Font.Size = new FontUnit("XSmall"); _style.BackColor = Color.LightGreen; _style.ForeColor = Color.Black; } return _style; } } // Create a convenience field for the control. private ControlWithStyleTasks myControl; public override void Initialize(IComponent component) { // Create the convenience control. base.Initialize(component); myControl = (ControlWithStyleTasks)component; } // The following section creates a designer action list. // Add the specific action list for this control. The // procedure here depends upon the specific order for // the list to be added, but always add the base. public override DesignerActionListCollection ActionLists { get { DesignerActionListCollection actionLists = new DesignerActionListCollection(); actionLists.AddRange(base.ActionLists); actionLists.Add(new MyList(this)); return actionLists; } } private string _styleConfigPhysicalFile = ""; protected string StyleConfigurationFile { get { return _styleConfigPhysicalFile; } set { string styleConfigPhysicalFilePath = String.Empty; if (value.Length > 0) { // Access the folder and look for the Control.xml file; // then obtain its physical path to use to set styles // for this control and control designer. Obtain the // actual file and its physical path from WebApplication. IWebApplication webApp = (IWebApplication)Component.Site.GetService( typeof(IWebApplication)); if (webApp != null) { // Look for the project items from the root. IProjectItem dataFileProjectItem = webApp.GetProjectItemFromUrl("~/" + value); if (dataFileProjectItem != null) { _styleConfigPhysicalFile = value; styleConfigPhysicalFilePath = dataFileProjectItem.PhysicalPath; } } } // Get the styles from the XML file. SetControlStyleFromConfiguration(styleConfigPhysicalFilePath); } } // Open the XML document and set control properties directly. private void SetControlStyleFromConfiguration(string path) { if (path == null || path == String.Empty) return; WebControl wc = (WebControl)Component; if (wc == null) return; XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(path); XmlNodeList stylesList = xmlDoc.GetElementsByTagName("style"); for (int i = 0; i < stylesList.Count; i++) { if (stylesList[i].Attributes["name"].Value == "BackColor") { PropertyDescriptor pd = TypeDescriptor.GetProperties(wc)["BackColor"]; if (pd != null) pd.SetValue(wc, Color.FromName(stylesList[i].Attributes["value"].Value)); } if (stylesList[i].Attributes["name"].Value == "ForeColor") { PropertyDescriptor pd = TypeDescriptor.GetProperties(wc)["ForeColor"]; if (pd != null) pd.SetValue(wc, Color.FromName(stylesList[i].Attributes["value"].Value)); } } } // Create the action list for this control. private class MyList : DesignerActionList { private ControlWithStyleTasksDesigner _parent; public MyList(ControlWithStyleTasksDesigner parent) : base(parent.Component) { _parent = parent; } [ TypeConverter(typeof(FileListTypeConverter)) ] public string ConfigureControlStyle { get { return _parent.StyleConfigurationFile; } set { _parent.StyleConfigurationFile = value; } } // Provide the list of sorted action items for the host. // Note that you can define the items through constructors // or through metadata on the method or property items. public override DesignerActionItemCollection GetSortedActionItems() { DesignerActionItemCollection items = new DesignerActionItemCollection(); items.Add(new DesignerActionTextItem("Configuration", "Select")); items.Add(new DesignerActionPropertyItem("ConfigureControlStyle", "Configure XML", "Select", String.Empty)); return items; } // The type converter needs to be generated with a standard // collection of items from the project. private class FileListTypeConverter : TypeConverter { public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { MyList myList = (MyList)context.Instance; IWebApplication webApp = (IWebApplication)myList._parent.Component.Site.GetService( typeof(IWebApplication)); ArrayList xmlFiles = new ArrayList(); IFolderProjectItem rootItem = (IFolderProjectItem)webApp.RootProjectItem; foreach (IProjectItem item in rootItem.Children) { if (String.Equals(Path.GetExtension(item.Name), ".xml", StringComparison.CurrentCultureIgnoreCase)) { xmlFiles.Add(item.Name); } } return new StandardValuesCollection(xmlFiles); } public override bool GetStandardValuesExclusive( ITypeDescriptorContext context) { return false; } public override bool GetStandardValuesSupported( ITypeDescriptorContext context) { return true; } } } } // This control designer is used to obtain the // configuration setting for the title. public class ControlWithConfigurationSettingDesigner : PanelContainerDesigner { public ControlWithConfigurationSettingDesigner() { } private Style _style = null; public override string FrameCaption { get { string title = String.Empty; IWebApplication webApp = (IWebApplication)Component.Site.GetService( typeof(IWebApplication)); if (webApp != null) { // Get the Configuration API. Configuration config = webApp.OpenWebConfiguration(true); if (config != null) { AppSettingsSection settingsSection = config.AppSettings; if (settingsSection != null) { title = " .... " + settingsSection.Settings["ContainerControlTitle"] + " ..... "; } } } return title; } } public override Style FrameStyle { get { if (_style == null) { _style = new Style(); _style.Font.Name = "Verdana"; _style.Font.Size = new FontUnit("XSmall"); _style.BackColor = Color.LightGreen; _style.ForeColor = Color.Black; } return _style; } } } // This control designer reads from the project file. [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] public class ControlWithButtonTasksDesigner : PanelContainerDesigner { public ControlWithButtonTasksDesigner() { } private Style _style = null; // Add the caption by default. Note that the caption // will only appear if the Web server control // allows child controls rather than properties. public override string FrameCaption { get { return "Container adding controls to the document."; } } public override Style FrameStyle { get { if (_style == null) { _style = new Style(); _style.Font.Name = "Verdana"; _style.Font.Size = new FontUnit("XSmall"); _style.BackColor = Color.LightGreen; _style.ForeColor = Color.Black; } return _style; } } // The following section creates a designer action list. // Add the specific action list for this control. The // procedure here depends upon the specific order for the // list to be added, but always add the base. public override DesignerActionListCollection ActionLists { get { DesignerActionListCollection actionLists = new DesignerActionListCollection(); actionLists.AddRange(base.ActionLists); actionLists.Add(new MyList3(this)); return actionLists; } } public void AddButton() { // Add a standard button. Button b = new Button(); b.Text = "New standard button"; RootDesigner.AddControlToDocument(b, null, ControlLocation.First); } public void AddNewButton() { // Add your custom button. NewButton b = new NewButton(); b.Text = "New custom button"; // For buttons defined in a different assembly, add the // register directive for the referenced assembly. // assembly. By default, this goes to the document, unless // already defined in the document or in configuration. WebFormsReferenceManager wfrm = RootDesigner.ReferenceManager; wfrm.RegisterTagPrefix(b.GetType()); RootDesigner.AddControlToDocument(b, null, ControlLocation.Last); } // Create the action list for this control. private class MyList3 : DesignerActionList { private ControlWithButtonTasksDesigner _parent; public MyList3(ControlWithButtonTasksDesigner parent) : base(parent.Component) { _parent = parent; } public void AddButton() { _parent.AddButton(); } public void AddNewButton() { _parent.AddNewButton(); } // Provide the list of sorted action items for the host. public override DesignerActionItemCollection GetSortedActionItems() { DesignerActionItemCollection items = new DesignerActionItemCollection(); items.Add(new DesignerActionTextItem("Add Control", "Add")); items.Add(new DesignerActionMethodItem(this, "AddButton", "Add a Button", "Add", String.Empty, false)); items.Add(new DesignerActionMethodItem(this, "AddNewButton", "Add a custom Button", "Add", String.Empty, false)); return items; } } } }
