qdr.app.tools/UILayoutDefinitionFormat/Samples/platform-config-sample.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Enhanced Platform-specific UI Layout Definition v1.5 -->
<ui-layout-def xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xmlns="ui-layout-definition"
               xsi:schemaLocation="ui-layout-definition ui-layout-def.xsd"
               version="1.5"
               schema-version="1.6"
               min-version="1.0"
               max-version="2.0"
               target-platform="avalonia"
               accessibility-compliance="wcag-aa">
  
  <!-- Enhanced validation rules with custom validators -->
  <validation-rules>
    <validation-include src="wcag-validation.xml" important="true" min-version="1.3" />
    <validation-include src="avalonia-validation.xml" important="true" platform="avalonia" />
    <validation-include src="performance-validation.xml" important="false" min-version="1.3" />
    
    <custom-validator name="PlatformCompatibilityValidator" version="1.0" category="compatibility">
      <description>Validates platform-specific control usage</description>
      <implementation>
        <script language="javascript">
          function validate(element, context) {
            const platform = context.targetPlatform;
            const controlPlatform = element.getAttribute('platform-hint') || 'basic';
            return platform === controlPlatform || controlPlatform === 'basic';
          }
        </script>
      </implementation>
    </custom-validator>
    
    <validation-profile name="AvaloniaProductionProfile" target-platform="avalonia" enabled="true">
      <description>Production validation profile for Avalonia applications</description>
      <profile-rule rule-name="PlatformCompatibilityValidator" enabled="true" severity="warning" />
      <profile-rule rule-name="accessibility-compliance" enabled="true" severity="error" />
      <configuration parallel-execution="true" cache-results="true">
        <setting key="min-avalonia-version" value="11.0" scope="profile" />
      </configuration>
    </validation-profile>
  </validation-rules>
  
  <!-- Platform-specific patterns with version constraints -->
  <patterns>
    <!-- Core Avalonia controls -->
    <pattern-include src="avalonia-controls.xml" important="true" platform="avalonia" min-version="1.3" />
    <!-- Enhanced accessibility controls -->
    <pattern-include src="accessibility-controls.xml" important="true" min-version="1.3" />
    <!-- Performance-optimized controls -->
    <pattern-include src="performance-controls.xml" important="false" min-version="1.3" />
    
    <!-- Platform-specific enhanced control -->
    <control name="AvaloniaEnhancedDataGrid" type="data" category="avalonia-data" schema-version="1.6">
      <description>Avalonia-specific data grid with advanced features</description>
      <constraints>
        <allowed-parents>Panel,Grid,ScrollViewer</allowed-parents>
        <allowed-children>columns</allowed-children>
        <container>true</container>
        <platform-constraints>
          <platform-constraint platform="avalonia" min-version="11.0" 
                              feature-required="data-virtualization" />
        </platform-constraints>
        <performance-hints virtualization-supported="true" heavy-rendering="false" 
                          recommended-max-items="50000" />
      </constraints>
      <attributes>
        <attribute name="items-source" type="binding" category="data" 
                   description="Collection binding for data source" />
        <attribute name="virtualization-mode" type="enum" 
                   values="None,Standard,Recycling" default="Recycling" 
                   category="performance" platform-specific="avalonia" />
        <attribute name="theme-variant" type="enum" 
                   values="Default,Light,Dark,HighContrast" default="Default"
                   category="appearance" platform-specific="avalonia" />
      </attributes>
      <data-binding supports-two-way="true" supports-commands="true" supports-validation="true">
        <bindable-property name="ItemsSource" type="collection" mode="OneWay" 
                          dependency-property="true" />
        <bindable-property name="SelectedItems" type="collection" mode="TwoWay" 
                          dependency-property="true" />
        <bindable-property name="CurrentItem" type="object" mode="TwoWay" />
      </data-binding>
      <behavior>
        <event name="selection-changed" async="false" accessibility-event="true" />
        <event name="cell-edit-ending" async="false" cancelable="true" />
        <command name="ExportCommand" can-execute-property="HasData" async="true" />
        <gesture name="double-tap-edit" type="double-tap" platform-specific="avalonia" />
      </behavior>
    </control>
  </patterns>
  
  <!-- Enhanced business views -->
  <views>
    <view-include src="business-views.xml" important="true" min-version="1.2" />
    
    <!-- Platform-optimized view -->
    <view name="AvaloniaProductManagementView" type="business-entity" category="core" 
          schema-version="1.6" platform="avalonia" singleton="false" lazy-loading="true" 
          cacheable="true" priority="high">
      <description>Product management optimized for Avalonia UI</description>
      
      <metadata>
        <model-class>Product</model-class>
        <view-model-class>AvaloniaProductViewModel</view-model-class>
        <permissions>product.read,product.write</permissions>
        <author>Platform Team</author>
        <version>2.1.0</version>
        <documentation-url>https://docs.company.com/avalonia-product-view</documentation-url>
        <tags>
          <tag>avalonia-optimized</tag>
          <tag>high-performance</tag>
          <tag>accessible</tag>
        </tags>
      </metadata>
      
      <!-- Avalonia-specific state management -->
      <state-management pattern="redux" persistence="local">
        <state name="initializing" initial="true" data-snapshot="InitState" />
        <state name="loaded" final="false" data-snapshot="LoadedState" />
        <state name="editing" final="false" data-snapshot="EditState" />
        <state name="saving" final="false" data-snapshot="SavingState" />
        <transition from="initializing" to="loaded" trigger="data-loaded" 
                    condition="products.length > 0" action="displayProducts" />
        <transition from="loaded" to="editing" trigger="edit-requested" action="startEdit" />
        <transition from="editing" to="saving" trigger="save-requested" 
                    condition="validation.isValid" action="saveProduct" />
        <transition from="saving" to="loaded" trigger="save-completed" action="refreshView" />
      </state-management>
      
      <!-- Enhanced accessibility for Avalonia -->
      <accessibility level="aa" tested="true">
        <compliance standard="wcag" level="aa" verified="true" />
        <feature name="screen-reader" type="screen-reader" required="true" 
                 implementation="Avalonia accessibility tree integration" />
        <feature name="keyboard-navigation" type="keyboard-navigation" required="true" 
                 implementation="Full tab navigation with focus indicators" />
        <feature name="high-contrast" type="high-contrast" required="true" 
                 implementation="Avalonia theme system integration" />
      </accessibility>
      
      <!-- Performance optimization for large datasets -->
      <performance target-load-time="800" memory-limit="200MB">
        <metric name="grid-render-time" type="load-time" target="300ms" critical="true" />
        <metric name="scroll-performance" type="frame-rate" target="60fps" critical="true" />
        <optimization technique="virtualization" description="UI virtualization for product grid" impact="high" />
        <optimization technique="lazy-loading" description="Load product details on demand" impact="medium" />
        <optimization technique="caching" description="Cache frequently accessed products" impact="medium" />
      </performance>
      
      <!-- Enhanced security -->
      <security level="high" audit-required="true">
        <permission name="product-read" type="read" required="true" scope="view" />
        <permission name="product-write" type="write" required="false" scope="data" />
        <vulnerability-protection type="injection" protection="parameterized-queries" severity="critical" />
        <data-protection encryption="true" gdpr-compliant="true" />
      </security>
      
      <!-- Comprehensive localization -->
      <localization default-culture="en-US" rtl-support="true">
        <supported-culture code="de-DE" name="German" completion="100" verified="true" />
        <supported-culture code="fr-FR" name="French" completion="95" verified="true" />
        <supported-culture code="ar-SA" name="Arabic" completion="80" verified="false" />
        <resource-bundle name="ProductResources" path="Resources/Products" type="resx" />
      </localization>
      
      <!-- Avalonia-specific testing -->
      <testing coverage-target="90" strategy="integration">
        <test-scenario name="product-crud" type="functional" priority="high" automated="true">
          <step action="load-products" expected="grid-populated" />
          <step action="create-product" expected="edit-dialog-shown" />
          <step action="save-product" expected="product-saved" />
        </test-scenario>
        <test-scenario name="accessibility-compliance" type="accessibility" priority="high" automated="true">
          <step action="keyboard-navigation" expected="all-controls-accessible" />
          <step action="screen-reader-test" expected="proper-announcements" />
        </test-scenario>
        <automation framework="avalonia-test-framework" selector-strategy="accessibility" />
      </testing>
      
      <dependencies>
        <service-ref name="ProductService" interface="IProductService" scope="scoped" required="true" />
        <library-ref name="Avalonia.Controls.DataGrid" version="11.0.0" source="nuget" optional="false" />
      </dependencies>
      
      <data-context>
        <property name="products" type="ObservableCollection&lt;Product&gt;" scope="view" 
                  observable="true" validation="NotNull" />
        <property name="selectedProduct" type="Product" scope="view" nullable="true" observable="true" />
        <property name="isLoading" type="bool" scope="view" default-value="false" observable="true" />
        <property name="filterText" type="string" scope="view" default-value="" observable="true" />
      </data-context>
      
      <windows>
        <window-ref name="ProductListWindow" role="main" default="true" lazy-load="false" 
                    priority="critical" />
        <window-ref name="ProductEditDialog" role="editor" default="false" lazy-load="true" 
                    priority="normal" />
      </windows>
      
      <communication>
        <publishes>
          <event name="product-selected" data="product-id" async="false" />
          <event name="products-filtered" data="filter-criteria" async="true" />
        </publishes>
        <subscribes>
          <event name="product-updated" source="ProductService" handler="refresh-product" 
                 async="true" debounce="1000" />
        </subscribes>
        <real-time>
          <connection name="product-updates" protocol="signalr" endpoint="/productHub" 
                      auto-reconnect="true" />
        </real-time>
      </communication>
    </view>
  </views>
  
  <!-- Platform-specific window includes -->
  <window-includes>
    <window-include src="avalonia-windows.xml" important="true" platform="avalonia" min-version="1.3" />
    <window-include src="responsive-windows.xml" important="false" min-version="1.3" />
  </window-includes>
  
  <!-- Enhanced main window with Avalonia-specific features -->
  <window name="ProductListWindow" title="Product Management - Avalonia" 
          view="AvaloniaProductManagementView" target-platform="avalonia" schema-version="1.6">
    
    <attributes>
      <attribute name="width" value="1200" />
      <attribute name="height" value="800" />
      <attribute name="min-width" value="800" />
      <attribute name="min-height" value="600" />
      <attribute name="window-state" value="Normal" />
      <attribute name="can-resize" value="true" />
      <attribute name="system-decorations" value="Full" />
      <attribute name="extend-client-area-to-decorations-hint" value="false" />
    </attributes>
    
    <view-properties>
      <role>main</role>
      <default>true</default>
      <data-context-binding>products</data-context-binding>
    </view-properties>
    
    <!-- Enhanced data binding for Avalonia -->
    <data-binding>
      <data-context source="AvaloniaProductViewModel" type="ViewModels.AvaloniaProductViewModel" mode="TwoWay" />
      <view-model class="AvaloniaProductViewModel" assembly="ProductManagement.Avalonia" 
                  namespace="ProductManagement.ViewModels" />
      <binding-properties>
        <property control="productGrid" property="ItemsSource" binding-path="Products" 
                  mode="OneWay" validation-rule="NotNullValidator" />
        <property control="searchBox" property="Text" binding-path="FilterText" 
                  mode="TwoWay" converter="StringTrimConverter" />
        <property control="loadingIndicator" property="IsVisible" binding-path="IsLoading" 
                  mode="OneWay" converter="BooleanToVisibilityConverter" />
      </binding-properties>
    </data-binding>
    
    <!-- Avalonia-specific accessibility -->
    <accessibility compliance-level="wcag-aa">
      <screen-reader window-title="Product Management Application" 
                     description="Manage products with full accessibility support"
                     landmark-role="main" />
      <keyboard-navigation tab-order-start="1" focus-trap="false" escape-closes="false" />
      <color-contrast high-contrast-support="true" minimum-ratio="4.5" />
    </accessibility>
    
    <!-- Main layout with Avalonia controls -->
    <DockPanel name="mainContainer">
      <!-- Header with Avalonia-specific controls -->
      <Border name="headerBorder" dock-panel-dock="Top" background="LightGray" padding="10">
        <Grid name="headerGrid">
          <grid-definitions>
            <column-definitions>
              <column-definition width="*" />
              <column-definition width="Auto" />
              <column-definition width="Auto" />
            </column-definitions>
          </grid-definitions>
          
          <TextBlock name="titleText" grid-column="0" text="Product Management" 
                     font-size="18" font-weight="Bold" vertical-alignment="Center"
                     aria-label="Application title" />
          
          <ProgressBar name="loadingIndicator" grid-column="1" width="100" height="4" 
                       is-indeterminate="true" is-visible="{Binding IsLoading}"
                       margin="10,0" vertical-alignment="Center"
                       aria-label="Loading progress" />
          
          <StackPanel name="actionButtons" grid-column="2" orientation="horizontal" spacing="5">
            <Button name="addButton" content="Add Product" 
                    command="{Binding AddProductCommand}"
                    aria-label="Add new product" />
            <Button name="refreshButton" content="Refresh" 
                    command="{Binding RefreshCommand}"
                    aria-label="Refresh product list" />
            <Button name="settingsButton" content="Settings" 
                    command="{Binding ShowSettingsCommand}"
                    aria-label="Open application settings" />
          </StackPanel>
        </Grid>
      </Border>
      
      <!-- Search and filter panel -->
      <Border name="filterBorder" dock-panel-dock="Top" background="WhiteSmoke" padding="10">
        <Grid name="filterGrid">
          <grid-definitions>
            <column-definitions>
              <column-definition width="Auto" />
              <column-definition width="*" />
              <column-definition width="Auto" />
              <column-definition width="Auto" />
            </column-definitions>
          </grid-definitions>
          
          <TextBlock name="searchLabel" grid-column="0" text="Search:" 
                     vertical-alignment="Center" margin="0,0,10,0"
                     aria-label="Search products" />
          
          <AutoCompleteBox name="searchBox" grid-column="1" 
                           placeholder-text="Search products by name, SKU, or category..."
                           text="{Binding FilterText, Mode=TwoWay}"
                           items-source="{Binding SearchSuggestions}"
                           minimum-prefix-length="2" filter-mode="Contains"
                           aria-label="Product search field"
                           aria-description="Enter text to search and filter products" />
          
          <ComboBox name="categoryFilter" grid-column="2" 
                    placeholder-text="All Categories"
                    items-source="{Binding Categories}"
                    selected-item="{Binding SelectedCategory, Mode=TwoWay}"
                    display-member-path="Name" margin="10,0,0,0"
                    aria-label="Filter by category" />
          
          <Button name="clearFiltersButton" grid-column="3" content="Clear" 
                  command="{Binding ClearFiltersCommand}" margin="10,0,0,0"
                  aria-label="Clear all filters" />
        </Grid>
      </Border>
      
      <!-- Main data grid with Avalonia-specific features -->
      <AvaloniaEnhancedDataGrid name="productGrid" 
                                items-source="{Binding Products}"
                                selected-item="{Binding SelectedProduct, Mode=TwoWay}"
                                virtualization-mode="Recycling"
                                theme-variant="{Binding CurrentTheme}"
                                can-user-resize-columns="true"
                                can-user-sort-columns="true"
                                can-user-reorder-columns="true"
                                grid-lines-visibility="Horizontal"
                                selection-mode="Single"
                                aria-label="Products data grid"
                                aria-description="List of products with sorting and filtering capabilities">
        
        <AvaloniaEnhancedDataGrid.Columns>
          <DataGridTextColumn header="SKU" binding="{Binding SKU}" width="120" 
                              is-read-only="true" aria-label="Product SKU" />
          <DataGridTextColumn header="Name" binding="{Binding Name}" width="200" 
                              is-read-only="true" aria-label="Product name" />
          <DataGridTextColumn header="Category" binding="{Binding Category.Name}" width="150" 
                              is-read-only="true" aria-label="Product category" />
          <DataGridTextColumn header="Price" binding="{Binding Price}" width="100" 
                              is-read-only="true" aria-label="Product price">
            <DataGridTextColumn.ElementStyle>
              <Style TargetType="TextBlock">
                <Setter Property="HorizontalAlignment" Value="Right" />
                <Setter Property="FontWeight" Value="Bold" />
              </Style>
            </DataGridTextColumn.ElementStyle>
          </DataGridTextColumn>
          <DataGridTextColumn header="Stock" binding="{Binding StockQuantity}" width="80" 
                              is-read-only="true" aria-label="Stock quantity">
            <DataGridTextColumn.ElementStyle>
              <Style TargetType="TextBlock">
                <Setter Property="HorizontalAlignment" Value="Center" />
              </Style>
            </DataGridTextColumn.ElementStyle>
          </DataGridTextColumn>
          <DataGridCheckBoxColumn header="Active" binding="{Binding IsActive}" width="60" 
                                  is-read-only="true" aria-label="Product status" />
          <DataGridTemplateColumn header="Actions" width="150" aria-label="Product actions">
            <DataGridTemplateColumn.CellTemplate>
              <DataTemplate>
                <StackPanel orientation="horizontal" spacing="5" horizontal-alignment="Center">
                  <Button content="Edit" command="{Binding $parent[Window].DataContext.EditProductCommand}"
                          command-parameter="{Binding}" 
                          classes="compact" aria-label="Edit product" />
                  <Button content="View" command="{Binding $parent[Window].DataContext.ViewProductCommand}"
                          command-parameter="{Binding}" 
                          classes="compact" aria-label="View product details" />
                  <Button content="Delete" command="{Binding $parent[Window].DataContext.DeleteProductCommand}"
                          command-parameter="{Binding}" 
                          classes="compact danger" aria-label="Delete product" />
                </StackPanel>
              </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
          </DataGridTemplateColumn>
        </AvaloniaEnhancedDataGrid.Columns>
      </AvaloniaEnhancedDataGrid>
      
      <!-- Status bar with Avalonia styling -->
      <Border name="statusBorder" dock-panel-dock="Bottom" background="LightGray" 
              border-brush="Gray" border-thickness="0,1,0,0" padding="10,5">
        <Grid name="statusGrid">
          <grid-definitions>
            <column-definitions>
              <column-definition width="*" />
              <column-definition width="Auto" />
              <column-definition width="Auto" />
              <column-definition width="Auto" />
            </column-definitions>
          </grid-definitions>
          
          <TextBlock name="statusText" grid-column="0" 
                     text="{Binding StatusMessage}" 
                     vertical-alignment="Center"
                     aria-live="polite" aria-label="Status information" />
          
          <TextBlock name="recordCount" grid-column="1" 
                     text="{Binding Products.Count, StringFormat='Products: {0}'}" 
                     vertical-alignment="Center" margin="10,0"
                     aria-label="Total product count" />
          
          <TextBlock name="selectedCount" grid-column="2" 
                     text="{Binding SelectedItems.Count, StringFormat='Selected: {0}'}" 
                     vertical-alignment="Center" margin="10,0"
                     aria-label="Selected products count" />
          
          <TextBlock name="lastUpdated" grid-column="3" 
                     text="{Binding LastUpdated, StringFormat='Updated: {0:HH:mm:ss}'}" 
                     vertical-alignment="Center" margin="10,0"
                     aria-label="Last update time" />
        </Grid>
      </Border>
    </DockPanel>
  </window>
  
  <!-- Product edit dialog with Avalonia features -->
  <window name="ProductEditDialog" title="Edit Product" 
          view="AvaloniaProductManagementView" target-platform="avalonia" schema-version="1.6">
    
    <attributes>
      <attribute name="width" value="500" />
      <attribute name="height" value="600" />
      <attribute name="can-resize" value="true" />
      <attribute name="show-in-taskbar" value="false" />
      <attribute name="window-startup-location" value="CenterOwner" />
      <attribute name="system-decorations" value="Full" />
    </attributes>
    
    <view-properties>
      <role>editor</role>
      <modal>true</modal>
      <data-context-binding>selectedProduct</data-context-binding>
      <parent-window>ProductListWindow</parent-window>
    </view-properties>
    
    <accessibility compliance-level="wcag-aa">
      <screen-reader window-title="Product Edit Dialog" 
                     description="Form for editing product information"
                     landmark-role="dialog" />
      <keyboard-navigation tab-order-start="1" focus-trap="true" escape-closes="true" />
    </accessibility>
    
    <ScrollViewer name="editFormContainer" vertical-scroll-bar-visibility="Auto">
      <StackPanel name="editFormPanel" spacing="15" margin="20">
        <TextBlock text="Product Information" font-size="16" font-weight="Bold"
                   aria-label="Product information section" />
        
        <Grid name="formGrid">
          <grid-definitions>
            <column-definitions>
              <column-definition width="120" />
              <column-definition width="*" />
            </column-definitions>
            <row-definitions>
              <row-definition height="Auto" />
              <row-definition height="Auto" />
              <row-definition height="Auto" />
              <row-definition height="Auto" />
              <row-definition height="Auto" />
              <row-definition height="Auto" />
              <row-definition height="Auto" />
            </row-definitions>
          </grid-definitions>
          
          <TextBlock grid-row="0" grid-column="0" text="SKU:" 
                     vertical-alignment="Center" aria-label="Product SKU" />
          <TextBox name="skuTextBox" grid-row="0" grid-column="1" 
                   text="{Binding SKU, Mode=TwoWay}" watermark="Enter SKU..."
                   aria-label="Product SKU input" />
          
          <TextBlock grid-row="1" grid-column="0" text="Name:" 
                     vertical-alignment="Center" margin="0,10,0,0"
                     aria-label="Product name" />
          <TextBox name="nameTextBox" grid-row="1" grid-column="1" margin="0,10,0,0"
                   text="{Binding Name, Mode=TwoWay}" watermark="Enter product name..."
                   aria-label="Product name input" />
          
          <TextBlock grid-row="2" grid-column="0" text="Category:" 
                     vertical-alignment="Center" margin="0,10,0,0"
                     aria-label="Product category" />
          <ComboBox name="categoryComboBox" grid-row="2" grid-column="1" margin="0,10,0,0"
                    items-source="{Binding Categories}"
                    selected-item="{Binding Category, Mode=TwoWay}"
                    display-member-path="Name" placeholder-text="Select category..."
                    aria-label="Product category selection" />
          
          <TextBlock grid-row="3" grid-column="0" text="Price:" 
                     vertical-alignment="Center" margin="0,10,0,0"
                     aria-label="Product price" />
          <NumericUpDown name="priceUpDown" grid-row="3" grid-column="1" margin="0,10,0,0"
                         value="{Binding Price, Mode=TwoWay}" minimum="0" increment="0.01"
                         format-string="C2" aria-label="Product price input" />
          
          <TextBlock grid-row="4" grid-column="0" text="Stock:" 
                     vertical-alignment="Center" margin="0,10,0,0"
                     aria-label="Stock quantity" />
          <NumericUpDown name="stockUpDown" grid-row="4" grid-column="1" margin="0,10,0,0"
                         value="{Binding StockQuantity, Mode=TwoWay}" minimum="0"
                         aria-label="Stock quantity input" />
          
          <TextBlock grid-row="5" grid-column="0" text="Description:" 
                     vertical-alignment="Top" margin="0,10,0,0"
                     aria-label="Product description" />
          <TextBox name="descriptionTextBox" grid-row="5" grid-column="1" margin="0,10,0,0"
                   text="{Binding Description, Mode=TwoWay}" 
                   accepts-return="true" text-wrapping="Wrap" height="80"
                   watermark="Enter product description..."
                   aria-label="Product description input" />
          
          <CheckBox name="activeCheckBox" grid-row="6" grid-column="1" margin="0,10,0,0"
                    content="Active" is-checked="{Binding IsActive, Mode=TwoWay}"
                    aria-label="Product active status" />
        </Grid>
        
        <!-- Dialog buttons -->
        <StackPanel name="buttonPanel" orientation="horizontal" 
                    horizontal-alignment="Right" spacing="10" margin="0,20,0,0">
          <Button name="saveButton" content="Save" 
                  command="{Binding SaveProductCommand}"
                  classes="accent" aria-label="Save product changes" />
          <Button name="cancelButton" content="Cancel" 
                  command="{Binding CancelEditCommand}"
                  aria-label="Cancel without saving" />
          <Button name="deleteButton" content="Delete" 
                  command="{Binding DeleteProductCommand}"
                  classes="danger" aria-label="Delete this product" />
        </StackPanel>
      </StackPanel>
    </ScrollViewer>
  </window>
  
</ui-layout-def>