Esquema de anotações

  • Artigo

Este tópico descreve a definição de esquema XML (XSD) usada pelo Microsoft Annotations Framework para salvar e recuperar dados de anotação do usuário.

O Annotations Framework serializa dados de anotação de uma representação interna para um formato XML. O formato XML usado para essa conversão é descrito pelo esquema XSD do Annotations Framework. O esquema define o formato XML independente de implementação que pode ser usado para trocar dados de anotação entre aplicativos.

A definição do esquema XML do Annotations Framework consiste em dois subesquemas:

  • O esquema principal de XML de anotações (Esquema principal).

  • O esquema base de XML de anotações (Esquema base).

O esquema principal define a estrutura XML primária de um Annotationarquivo . A maioria dos elementos XML definidos no esquema principal corresponde a tipos no System.Windows.Annotations namespace. O esquema principal expõe três pontos de extensão, no qual os aplicativos podem adicionar seus próprios dados XML. Esses pontos de extensão incluem o Authors, ContentLocatorParte "Conteúdo". (Os elementos de conteúdo são fornecidos na forma de uma XmlElement lista.)

O esquema base descrito neste tópico define as extensões para os Authorstipos de ContentLocatorPartconteúdo e , incluídos na versão inicial do Windows Presentation Foundation (WPF).

Esquema principal de XML de anotações

O esquema principal XML de anotações define a estrutura XML usada para armazenar Annotation objetos.

<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified"
            blockDefault="#all"
            xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            targetNamespace="http://schemas.microsoft.com/windows/annotations/2003/11/core"
            xmlns:anc="http://schemas.microsoft.com/windows/annotations/2003/11/core">

  <!-- The Annotations element groups a number of annotations.  -->
  <xsd:element name="Annotations" type="anc:AnnotationsType" />

  <xsd:complexType name="AnnotationsType">
    <xsd:sequence>
      <xsd:element name="Annotation" minOccurs="0" maxOccurs="unbounded"
                   type="anc:AnnotationType" />
    </xsd:sequence>
  </xsd:complexType>

  <!-- AnnotationType defines the structure of the Annotation element. -->
  <xsd:complexType name="AnnotationType">
    <xsd:sequence>

      <!-- List of 0 or more authors. -->
      <xsd:element name="Authors" minOccurs="0" maxOccurs="1"
                   type="anc:AuthorListType" />

      <!-- List of 0 or more anchors. -->
      <xsd:element name="Anchors" minOccurs="0" maxOccurs="1"
                   type="anc:ResourceListType" />

      <!-- List of 0 or more cargos. -->
      <xsd:element name="Cargos" minOccurs="0" maxOccurs="1"
                   type="anc:ResourceListType" />

    </xsd:sequence>

    <!-- Unique annotation ID. -->
    <xsd:attribute name="Id" type="xsd:string" use="required" />

    <!-- Annotation "Type" is used to map the annotation to an annotation
         component that takes care of the visual representation of the
         annotation.  WPF V1 recognizes three annotation types:
  http://schemas.microsoft.com/windows/annotations/2003/11/base:Highlight
  http://schemas.microsoft.com/windows/annotations/2003/11/base:TextStickyNote
  http://schemas.microsoft.com/windows/annotations/2003/11/base:InkStickyNote
    -->
    <xsd:attribute name="Type" type="xsd:QName" use="required" />

    <!-- Time when the annotation was last modified.  -->
    <xsd:attribute name="LastModificationTime" use="optional"
                   type="xsd:dateTime" />

    <!-- Time when the annotation was created.  -->
    <xsd:attribute name="CreationTime" use="optional"
                   type="xsd:dateTime" />
  </xsd:complexType>

  <!-- "Authors" consists of 0 or more elements that represent an author. -->
  <xsd:complexType name="AuthorListType">
    <xsd:sequence minOccurs="0" maxOccurs="unbounded">
      <xsd:element ref="anc:Author" />
    </xsd:sequence>
  </xsd:complexType>

  <!-- The core schema allows any author type. Supported author types
       in version 1 (V1) are described in the base schema. -->
  <xsd:element name="Author" abstract="true" block="extension restriction"/>

  <!-- Both annotation anchor and annotation cargo are represented by the
       ResourceListType which contains 0 or more "Resource" elements. -->
  <xsd:complexType name="ResourceListType">
    <xsd:sequence>
      <xsd:element name="Resource" minOccurs="0" maxOccurs="unbounded"
                   type="anc:ResourceType" />
    </xsd:sequence>
  </xsd:complexType>

  <!-- Resource groups identification, location
       and/or content of some information.  -->
  <xsd:complexType name="ResourceType">
    <xsd:choice minOccurs="0" maxOccurs="unbounded" >
      <xsd:choice>
        <xsd:element name="ContentLocator" type="anc:ContentLocatorType" />
        <xsd:element name="ContentLocatorGroup" type="anc:ContentLocatorGroupType" />
      </xsd:choice>
      <xsd:element ref="anc:Content"/>
    </xsd:choice>

    <!-- Unique resource identifier. -->
    <xsd:attribute name="Id" type="xsd:string" use="required" />

    <!-- Optional resource name. -->
    <xsd:attribute name="Name" type="xsd:string" use="optional" />
  </xsd:complexType>

  <!-- ContentLocatorGroup contains a set of ContentLocators -->
  <xsd:complexType name="ContentLocatorGroupType">
    <xsd:sequence>
      <xsd:element name="ContentLocator" minOccurs="1" maxOccurs="unbounded"
                   type="anc:ContentLocatorType" />
    </xsd:sequence>
  </xsd:complexType>

  <!-- A ContentLocator describes the location or the identification
       of particular data within some context.  The ContentLocator consists
       of one or more ContentLocatorParts.  Each ContentLocatorPart needs to
       be successively applied to the context to arrive at the data.  What
       "applying", "context", and "data" mean is application dependent.
  -->
  <xsd:complexType name="ContentLocatorType">
    <xsd:sequence minOccurs="1" maxOccurs="unbounded">
      <xsd:element ref="anc:ContentLocatorPart" />
    </xsd:sequence>
  </xsd:complexType>

  <!-- A ContentLocatorPart is a set of "Item" elements.  Each "Item" element
       has "Name" and "Value" attributes that define a name/value pair.
       ContentLocatorPart is an abstract type that must be restricted for each
       concrete ContentLocatorPart definition.  This restriction should define
       allowed names and values for the concrete ContentLocatorPart type. That
       way the application can define its own way of locating information. The
       ContentLocatorPartTypes that are allowed in version 1 (V1) of WPF are
       defined in the Annotations Base Schema.
  -->
  <xsd:element name="ContentLocatorPart" type="anc:ContentLocatorPartType"
               abstract="true" />

  <xsd:complexType name="ContentLocatorPartType" abstract="true"
                   block="restriction">
    <xsd:sequence minOccurs="0" maxOccurs="unbounded">
      <xsd:element name="Item" type="anc:ItemType" />
    </xsd:sequence>
  </xsd:complexType>

  <xsd:complexType name="ItemType" abstract="true" >
    <xsd:attribute name="Name" type='xsd:string' use="required" />
    <xsd:attribute name="Value" type='xsd:string' use="optional" />
  </xsd:complexType>

  <!-- Content describes the underlying content of a resource.  This is an
       abstract type that should be redefined for each concrete content type
       through restriction.  Allowed content types in WPF version 1 are
       defined in the Annotations Base Schema.
  -->
  <xsd:element name="Content" abstract="true" block="extension restriction"/>

</xsd:schema>

Esquema base de XML de anotações

O Esquema Base define a estrutura XML para os três elementos abstratos definidos no Esquema Principal – Authors, ContentLocatorParte Contents.

<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified"
     blockDefault="#all"
     xmlns:xsd="http://www.w3.org/2001/XMLSchema"
     targetNamespace="http://schemas.microsoft.com/windows/annotations/2003/11/base"
     xmlns:anb="http://schemas.microsoft.com/windows/annotations/2003/11/base"
     xmlns:anc="http://schemas.microsoft.com/windows/annotations/2003/11/core">

  <xsd:import schemaLocation="AnnotationCoreV1.xsd"
       namespace="http://schemas.microsoft.com/windows/annotations/2003/11/core"/>

  <!-- ***** Author ***** -->
  <!-- Simple DisplayName Author -->
  <xsd:complexType name="StringAuthorType">
    <xsd:simpleContent >
      <xsd:extension base='xsd:string' />
    </xsd:simpleContent>
  </xsd:complexType>
  <xsd:element name="StringAuthor" type="anb:StringAuthorType"
               substitutionGroup="anc:Author"/>

  <!-- ***** LocatorParts ***** -->

  <!-- Helper types -->

  <!-- CountItemNameType - helper type to define count item -->
  <xsd:simpleType name="CountItemNameType">
    <xsd:restriction base='xsd:string'>
      <xsd:pattern value="Count" />
    </xsd:restriction>
  </xsd:simpleType>

  <!-- NumberType - helper type to define segment count item -->
  <xsd:simpleType name="NumberType">
    <xsd:restriction base='xsd:string'>
      <xsd:pattern value="\d*" />
    </xsd:restriction>
  </xsd:simpleType>

  <!-- SegmentNameType: helper type to define possible segment name types -->
  <xsd:simpleType name="SegmentItemNameType">
    <xsd:restriction base='xsd:string'>
      <xsd:pattern value="Segment\d*" />
    </xsd:restriction>
  </xsd:simpleType>

  <!-- Flow Locator Part -->

  <!-- FlowSegmentValueItemType: helper type to define flow segment values -->
  <xsd:simpleType name="FlowSegmentItemValueType">
    <xsd:restriction base='xsd:string'>
      <xsd:pattern value=" \d*,\d*" />
    </xsd:restriction>
  </xsd:simpleType>

  <!-- FlowItemType -->
  <xsd:complexType name="FlowItemType" abstract = "true">
    <xsd:complexContent>
      <xsd:restriction base="anc:ItemType">
      </xsd:restriction>
   </xsd:complexContent>
  </xsd:complexType>

  <!-- FlowSegmentItemType -->
  <xsd:complexType name="FlowSegmentItemType">
    <xsd:complexContent>
      <xsd:restriction base="anb:FlowItemType">
        <xsd:attribute name="Name" use="required"
                       type="anb:SegmentItemNameType"/>
        <xsd:attribute name="Value" use="required"
                       type="anb:FlowSegmentItemValueType"/>
       </xsd:restriction>
    </xsd:complexContent>
 </xsd:complexType>

  <!-- FlowCountItemType -->
  <xsd:complexType name="FlowCountItemType">
    <xsd:complexContent>
      <xsd:restriction base="anb:FlowItemType">
        <xsd:attribute name="Name" type="anb:CountItemNameType" use="required"/>
        <xsd:attribute name="Value" type="anb:NumberType" use="required"/>
       </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>

  <!-- CharacterRangeType is an extension of ContentLocatorPartType that locates
  *    part of the content within a FlowDocument. CharacterRangeType contains one
  *    "Item" element with name "Count" and value the number(N) of "SegmentXX"
  *    elements that this ContentLocatorPart has.  It also contains N "Item"
  *    elements with name "SegmentXX" where XX is a number from 0 to N-1. The
  *    value of each "SegmentXX" element is a string in the form "offset, length"
  *    which locates one sequence of symbols in the FlowDocument. Example:

  *        <anb:CharacterRange>
  *          <anc:Item Name="Count" Value="2" />
  *          <anc:Item Name="Segment0" Value="5,10" />
  *          <anc:Item Name="Segment1" Value="25,2" />
  *        </anb:CharacterRange>
  -->
  <xsd:complexType name="CharacterRangeType">
    <xsd:complexContent>
      <xsd:extension base="anc:ContentLocatorPartType">
        <xsd:sequence minOccurs="1" maxOccurs="unbounded">
          <xsd:element name="Item" type="anb:FlowItemType" />
        </xsd:sequence>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>

  <!-- CharacterRange element substitutes ContentLocatorPart element -->
  <xsd:element name="CharacterRange" type="anb:CharacterRangeType"
               substitutionGroup="anc:ContentLocatorPart"/>

  <!-- Fixed LocatorPart -->

  <!-- Helper type – FixedItemType -->
  <xsd:complexType name="FixedItemType" abstract = "true">
    <xsd:complexContent>
      <xsd:restriction base="anc:ItemType">
      </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>

  <!-- Helper type – FixedCountItemType: ContentLocatorPart items count -->
  <xsd:complexType name="FixedCountItemType">
    <xsd:complexContent>
      <xsd:restriction base="anb:FixedItemType">
        <xsd:attribute name="Name" type="anb:CountItemNameType" use="required"/>
        <xsd:attribute name="Value" type="anb:NumberType" use="required"/>
      </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>

  <!-- Helper type -FixedSegmentValue: Defines possible fixed segment values -->
  <xsd:simpleType name="FixedSegmentItemValueType">
     <xsd:restriction base='xsd:string'>
        <xsd:pattern value="\d*,\d*,\d*,\d*" />
     </xsd:restriction>
  </xsd:simpleType>

  <!-- Helper type - FixedSegmentItemType -->
  <xsd:complexType name="FixedSegmentItemType">
    <xsd:complexContent>
      <xsd:restriction base="anb:FixedItemType">
        <xsd:attribute name="Name" use="required"
                       type="anb:SegmentItemNameType"/>
        <xsd:attribute name="Value" use="required"
                       type="anb:FixedSegmentItemValueType "/>
      </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>

  <!-- FixedTextRangeType is an extension of ContentLocatorPartType that locates
  *    content within a FixedDocument.  It contains one "Item" element with name
  *    "Count" and value the number (N) of "Item" elements with name "SegmentXX"
  *    that this ContentLocatorPart has.  FixedTextRange locator part also
  *    contains N "Item" elements with one attribute Name="SegmentXX" where XX is
  *    a number from 0 to N-1 and one attribute "Value" in the form "X1, Y1, X2,
  *    Y2".  Here X1,Y1 are the coordinates of the start symbol in this segment,
  *    X2,Y2 are the coordinates of the end symbol in this segment.  Example:
  *
  *        <anb:FixedTextRange>
  *          <anc:Item Name="Count" Value="2" />
  *          <anc:Item Name="Segment0" Value="10,5,20,5" />
  *          <anc:Item Name="Segment1" Value="25,15, 25,20" />
  *        </anb:FixedTextRange>
  -->
  <xsd:complexType name="FixedTextRangeType">
     <xsd:complexContent>
        <xsd:extension base="anc:ContentLocatorPartType">
           <xsd:sequence minOccurs="1" maxOccurs="unbounded">
              <xsd:element name="Item" type="anb:FixedItemType" />
           </xsd:sequence>
       </xsd:extension>
     </xsd:complexContent>
  </xsd:complexType>

  <!-- FixedTextRange element substitutes ContentLocatorPart element -->
  <xsd:element name="FixedTextRange" type="anb:FixedTextRangeType"
               substitutionGroup="anc:ContentLocatorPart"/>

  <!-- DataId -->

  <!-- ValueItemNameType: helper type to define value item -->
  <xsd:simpleType name="ValueItemNameType">
    <xsd:restriction base='xsd:string'>
      <xsd:pattern value="Value" />
    </xsd:restriction>
  </xsd:simpleType>

  <!-- StringValueItemType -->
  <xsd:complexType name="StringValueItemType">
     <xsd:complexContent>
        <xsd:restriction base="anc:ItemType">
           <xsd:attribute name="Name" type="anb:ValueItemNameType" use="required"/>
        <xsd:attribute name="Value" type="xsd:string" use="required"/>
        </xsd:restriction>
     </xsd:complexContent>
  </xsd:complexType>

  <xsd:complexType name="StringValueLocatorPartType">
    <xsd:complexContent>
      <xsd:extension base="anc:ContentLocatorPartType">
        <xsd:sequence minOccurs="1" maxOccurs="1">
          <xsd:element name="Item" type="anb:ValueItemType" />
        </xsd:sequence>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>

  <!-- DataId element substitutes ContentLocatorPart and is used to locate a
  *    subtree in the logical tree.  Including DataId locator part in a
  *    ContentLocator helps to narrow down the search for a particular content.
  *    Example of DataId ContentLocatorPart:
  *
  *        <anb:DataId>
  *          <anc:Item Name="Value" Value="FlowDocument" />
  *        </anb:DataId>
  -->

  <xsd:element name="DataId" type="anb: StringValueLocatorPartType "
               substitutionGroup="anc:ContentLocatorPart"/>

  <!-- PageNumber -->

  <!-- NumberValueItemType -->
  <xsd:complexType name="NumberValueItemType">
    <xsd:complexContent>
      <xsd:restriction base="anc:ItemType">
        <xsd:attribute name="Name" type="anb:ValueItemNameType" use="required"/>
        <xsd:attribute name="Value" type="anb:NumberType" use="required"/>
      </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>

  <xsd:complexType name="NumberValueLocatorPartType">
    <xsd:complexContent>
      <xsd:extension base="anc:ContentLocatorPartType">
        <xsd:sequence minOccurs="1" maxOccurs="1">
          <xsd:element name="Item" type="anb:ValueItemType" />
        </xsd:sequence>
      </xsd:extension>
    </xsd:complexContent>
  </xsd:complexType>

  <!-- PageNumber element substitutes ContentLocatorPart and is used to locate a
  *    page in a FixedDocument.  PageNumber ContentLocatorPart is used in
  *    conjunction with the FixedTextRange ContentLocatorPart and it shows on with
  *    page are the coordinates defined in the FixedTextRange.
  *    Example of a PageNumber ContentLocatorPart:
  *
  *       <anb:PageNumber>
  *         <anc:Item Name="Value" Value="1" />
  *       </anb:PageNumber>
  -->
  <xsd:element name="PageNumber" type="anb:NumberValueLocatorPartType"
               substitutionGroup="anc:ContentLocatorPart"/>

  <!-- ***** Content ***** -->
  <!-- Highlight colors – defines highlight color for annotations of type
  *    Highlight or normal and active anchor colors for annotations of type
  *    TextStickyNote and InkStickyNote.
  -->
  <xsd:complexType name="ColorsContentType">
    <xsd:attribute name="Background" type='xsd:string' use="required" />
    <xsd:attribute name="ActiveBackground" type='xsd:string' use="optional" />
  </xsd:complexType>

  <xsd:element name="Colors" type="anb:ColorsContentType"
               substitutionGroup="anc:Content"/>

  <!-- RTB Text –contains XAML representing StickyNote Reach Text Box text.
  *    Used in annotations of type TextStickyNote. -->
  <xsd:complexType name="TextContentType">
    <!-- See XAML schema for RTB content -->
  </xsd:complexType>

  <xsd:element name="Text" type="anb:TextContentType"
               substitutionGroup="anc:Content"/>

  <!-- Ink – contains XAML representing Sticky Note ink.
  *    Used in annotations of type InkStickyNote. -->
  <xsd:complexType name="InkContentType">
    <!-- See XAML schema for Ink content -->
  </xsd:complexType>

  <xsd:element name="Ink" type="anb:InkContentType"
               substitutionGroup="anc:Content"/>

  <!-- SN Metadata – defines StickyNote attributes as position width, height,
  *    etc.  Used in annotations of type TextStickyNote and InkStickyNote. -->
  <xsd:complexType name="MetadataContentType">
    <xsd:attribute name="Left" type='xsd:decimal' use="optional"  />
    <xsd:attribute name="Top" type='xsd:decimal' use="optional" />
    <xsd:attribute name="Width" type='xsd:decimal' use="optional" />
    <xsd:attribute name="Height" type='xsd:decimal' use="optional" />
    <xsd:attribute name="XOffset" type='xsd:decimal' use="optional" />
    <xsd:attribute name="YOffset" type='xsd:decimal' use="optional" />
    <xsd:attribute name="ZOrder" type='xsd:decimal' use="optional" />
  </xsd:complexType>

  <xsd:element name="Metadata" type="anb:MetadataContentType"
               substitutionGroup="anc:Content"/>

</xsd:schema>

Exemplo de XML produzido por XmlStreamStore de anotações

O XML a seguir mostra a saída de um Annotations XmlStreamStore e a organização de um arquivo de exemplo que contém três anotações - um realce, uma nota adesiva de texto e uma nota de adesivo de tinta.

<?xml version="1.0" encoding="utf-8"?>
<anc:Annotations
     xmlns:anc="http://schemas.microsoft.com/windows/annotations/2003/11/core"
     xmlns:anb="http://schemas.microsoft.com/windows/annotations/2003/11/base">

  <anc:Annotation Id="d308ea9b-36eb-4cc4-94d0-97634f10f7a2"
                  CreationTime="2006-09-13T18:28:51.4465702-07:00"
                  LastModificationTime="2006-09-13T18:28:51.4465702-07:00"
                  Type="anb:Highlight">
    <anc:Anchors>
      <anc:Resource Id="4f53661b-7328-4673-8e3f-c53f08b9cd94">
        <anc:ContentLocator>
          <anb:DataId>
            <anc:Item Name="Value" Value="FlowDocument" />
          </anb:DataId>
          <anb:CharacterRange>
            <anc:Item Name="Segment0" Value="600,609" />
            <anc:Item Name="Count" Value="1" />
          </anb:CharacterRange>
        </anc:ContentLocator>
      </anc:Resource>
    </anc:Anchors>
  </anc:Annotation>

  <anc:Annotation Id="d7a8d271-387e-4144-9f8b-bc3c97816e5f"
                  CreationTime="2006-09-13T18:28:56.7903202-07:00"
                  LastModificationTime="2006-09-13T18:28:56.8996952-07:00"
                  Type="anb:TextStickyNote">
    <anc:Authors>
      <anb:StringAuthor>Denise Smith</anb:StringAuthor>
    </anc:Authors>

    <anc:Anchors>
      <anc:Resource Id="dab2560e-6ebd-4ad0-80f9-483356a3be0b">
        <anc:ContentLocator>
          <anb:DataId>
            <anc:Item Name="Value" Value="FlowDocument" />
          </anb:DataId>
          <anb:CharacterRange>
            <anc:Item Name="Segment0" Value="787,801" />
            <anc:Item Name="Count" Value="1" />
          </anb:CharacterRange>
        </anc:ContentLocator>
      </anc:Resource>
    </anc:Anchors>

    <anc:Cargos>
      <anc:Resource Id="ea4dbabd-b400-4cf9-8908-5716b410f9e4" Name="Meta Data">
        <anb:MetaData anb:ZOrder="0" />
      </anc:Resource>
    </anc:Cargos>
  </anc:Annotation>

  <anc:Annotation Id="66803c69-b0d7-4cc3-bdff-cacc1955e806"
                  CreationTime="2006-09-13T18:29:03.6653202-07:00"
                  LastModificationTime="2006-09-13T18:29:03.7121952-07:00"
                  Type="anb:InkStickyNote">
    <anc:Authors>
      <anb:StringAuthor>Mike Nash</anb:StringAuthor>
    </anc:Authors>

    <anc:Anchors>
      <anc:Resource Id="52251c53-8eeb-4fd7-b8f3-94e78dfc25fa">
        <anc:ContentLocator>
          <anb:DataId>
            <anc:Item Name="Value" Value="FlowDocument" />
          </anb:DataId>
          <anb:CharacterRange>
            <anc:Item Name="Segment0" Value="880,884" />
            <anc:Item Name="Count" Value="1" />
          </anb:CharacterRange>
        </anc:ContentLocator>
      </anc:Resource>
    </anc:Anchors>

    <anc:Cargos>
      <anc:Resource Id="11e50b97-8d91-4ff9-82c3-16607b2b552b" Name="Meta Data">
        <anb:MetaData anb:ZOrder="1" />
      </anc:Resource>
    </anc:Cargos>
  </anc:Annotation>

</anc:Annotations>

Confira também