EditorPartChrome クラスとは何？わかりやすく解説 Weblio辞書

<%@ Page Language="VB" %>
<%@ register tagprefix="aspSample" 
  Namespace="Samples.AspNet.VB.Controls"
 %>
<%@ Register TagPrefix="uc1" TagName="DisplayModeMenuVB"
 Src="~/DisplayModeMenuVB.ascx" %>
<html>
<head id="Head1" runat="server">
  <title>Web Parts Page</title>
</head>
<body>
  <h1>Web Parts Demonstration Page</h1>
  <form runat="server" id="form1">
<asp:webpartmanager id="WebPartManager1" runat="server"
 />
<uc1:DisplayModeMenuVB runat=server ID="DisplayModeMenu"
 />
  <br />
  <table cellspacing="0" cellpadding="0"
 border="0">
    <tr>
      <td valign="top">
    <asp:webpartzone id="SideBarZone" runat="server"
 
        headertext="Sidebar">
        <zonetemplate>
        </zonetemplate>
      </asp:webpartzone>
      <aspSample:MyEditorZone ID="EditorZone1"
 runat="server">
      <ZoneTemplate>
        <asp:AppearanceEditorPart ID="AppearanceEditorPart1"
 
          runat="server" />
        <asp:LayoutEditorPart ID="LayoutEditorPart1"
 
          runat="server" />
      </ZoneTemplate>
    </aspSample:MyEditorZone>
      </td>
      <td valign="top">
    <asp:webpartzone id="MainZone" runat="server"
 headertext="Main">
         <zonetemplate>
        <asp:label id="contentPart" runat="server"
 title="Content">
              <h2>Welcome to My Home Page</h2>
              <p>Use links to visit my favorite sites!</p>
            </asp:label>
         </zonetemplate>
       </asp:webpartzone>
      </td>
      <td valign="top">
      </td>
    </tr>
  </table>
  </form>
</body>
</html>

<%@ Page Language="C#" %>
<%@ register tagprefix="aspSample" 
  Namespace="Samples.AspNet.CS.Controls" %>
<%@ Register TagPrefix="uc1" TagName="DisplayModeMenuCS" Src="~/DisplayModeMenuCS.ascx"
 %>
<html>
<head id="Head1" runat="server">
  <title>Web Parts Page</title>
</head>
<body>
  <h1>Web Parts Demonstration Page</h1>
  <form runat="server" id="form1">
<asp:webpartmanager id="WebPartManager1" runat="server" />
<uc1:DisplayModeMenuCS runat=server ID="DisplayModeMenu" />
  <br />
  <table cellspacing="0" cellpadding="0" border="0">
    <tr>
      <td valign="top">
    <asp:webpartzone id="SideBarZone" runat="server" 
        headertext="Sidebar">
        <zonetemplate>
        </zonetemplate>
      </asp:webpartzone>
      <aspSample:MyEditorZone ID="EditorZone1" runat="server">
      <ZoneTemplate>
        <asp:AppearanceEditorPart ID="AppearanceEditorPart1" 
          runat="server" />
        <asp:LayoutEditorPart ID="LayoutEditorPart1" 
          runat="server" />
      </ZoneTemplate>
    </aspSample:MyEditorZone>
      </td>
      <td valign="top">
    <asp:webpartzone id="MainZone" runat="server" headertext="Main">
         <zonetemplate>
        <asp:label id="contentPart" runat="server" title="Content">
              <h2>Welcome to My Home Page</h2>
              <p>Use links to visit my favorite sites!</p>
            </asp:label>
         </zonetemplate>
       </asp:webpartzone>
      </td>
      <td valign="top">
      </td>
    </tr>
  </table>
  </form>
</body>
</html>

コード例の 3 番目の部分は、カスタムのエディタパーツクロムとエディタパーツゾーンの実装を含んでいます。MyEditorZone は EditorZone を拡張し、CreateEditorPartChrome をオーバーライドして、カスタムのエディタパーツクロムを返します。MyEditorPartChrome は、CreateEditorPartChromeStyle メソッドのエディタパーツコントロールの背景色を変更します。ゾーンの背景色は PerformPreRender メソッドで変更され、RenderPartContents メソッドでエディタパーツにテキストが追加されます。

Visual Basic

Namespace Samples.AspNet.VB.Controls


    <AspNetHostingPermission(SecurityAction.Demand, _
      Level:=AspNetHostingPermissionLevel.Minimal)> _
    <AspNetHostingPermission(SecurityAction.InheritanceDemand, _
      Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public Class MyEditorPartChrome
        Inherits EditorPartChrome

        Public Sub New(ByVal
 zone As EditorZoneBase)
            MyBase.New(zone)
        End Sub

        Protected Overrides Function
 CreateEditorPartChromeStyle(ByVal editorPart As
 System.Web.UI.WebControls.WebParts.EditorPart, ByVal chromeType As System.Web.UI.WebControls.WebParts.PartChromeType) As
 System.Web.UI.WebControls.Style
            Dim editorStyle As Style
            editorStyle = MyBase.CreateEditorPartChromeStyle(editorPart,
 chromeType)
            editorStyle.BackColor = Drawing.Color.Bisque
            Return editorStyle
        End Function

        Public Overrides Sub
 PerformPreRender()
            Dim zoneStyle As Style = New
 Style
            zoneStyle.BackColor = Drawing.Color.Cornsilk

            Zone.Page.Header.StyleSheet.RegisterStyle(zoneStyle, Nothing)
            Zone.MergeStyle(zoneStyle)
        End Sub

        Protected Overrides Sub
 RenderPartContents(ByVal writer As System.Web.UI.HtmlTextWriter,
 ByVal editorPart As System.Web.UI.WebControls.WebParts.EditorPart)
            writer.AddStyleAttribute("color", "red")
            writer.RenderBeginTag("p")
            writer.Write("Apply all changes")
            writer.RenderEndTag()
            editorPart.RenderControl(writer)
        End Sub

        Public Overrides Sub
 RenderEditorPart(ByVal writer As System.Web.UI.HtmlTextWriter,
 ByVal editorPart As System.Web.UI.WebControls.WebParts.EditorPart)
            MyBase.RenderEditorPart(writer, editorPart)
        End Sub
    End Class


    <AspNetHostingPermission(SecurityAction.Demand, _
      Level:=AspNetHostingPermissionLevel.Minimal)> _
    <AspNetHostingPermission(SecurityAction.InheritanceDemand, _
      Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public Class MyEditorZone
        Inherits EditorZone

        Protected Overrides Function
 CreateEditorPartChrome() As System.Web.UI.WebControls.WebParts.EditorPartChrome
            Return New MyEditorPartChrome(Me)
        End Function
    End Class
End Namespace

namespace Samples.AspNet.CS.Controls
{

    [AspNetHostingPermission(SecurityAction.Demand,
      Level = AspNetHostingPermissionLevel.Minimal)]
    [AspNetHostingPermission(SecurityAction.InheritanceDemand,
      Level = AspNetHostingPermissionLevel.Minimal)]
    public class MyEditorPartChrome : EditorPartChrome
    {
        public MyEditorPartChrome(EditorZoneBase zone)
            : base(zone)
        {

        }
        
        protected override Style CreateEditorPartChromeStyle(EditorPart
 editorPart, PartChromeType chromeType)
        {
            Style editorStyle = base.CreateEditorPartChromeStyle(editorPart,
 chromeType);
            editorStyle.BackColor = Color.Bisque;
            return editorStyle;
        }

        public override void PerformPreRender()
        {
            Style zoneStyle = new Style();
            zoneStyle.BackColor = Color.Cornsilk;

            Zone.Page.Header.StyleSheet.RegisterStyle(zoneStyle, null);
            Zone.MergeStyle(zoneStyle);
        }

        protected override void RenderPartContents(HtmlTextWriter
 writer, EditorPart editorPart)
        {
            writer.AddStyleAttribute("color", "red");
            writer.RenderBeginTag("p");
            writer.Write("Apply all changes");
            writer.RenderEndTag();
            editorPart.RenderControl(writer);
        }

        public override void RenderEditorPart(HtmlTextWriter
 writer, EditorPart editorPart)
        {
            base.RenderEditorPart(writer, editorPart);
        }
    }

    [AspNetHostingPermission(SecurityAction.Demand,
      Level = AspNetHostingPermissionLevel.Minimal)]
    [AspNetHostingPermission(SecurityAction.InheritanceDemand,
      Level = AspNetHostingPermissionLevel.Minimal)]
    public class MyEditorZone : EditorZone
    {
        protected override EditorPartChrome CreateEditorPartChrome()
        {
            return new MyEditorPartChrome(this);
        }
    }
}