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Signum Framework Tutorials Part 2 – Southwind Logic

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15 Nov 2012LGPL325 min read 31.5K   1K   22  
In this part, we will focus on writing business logic, LINQ queries and explain inheritance
<UserControl
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
	xmlns:m="clr-namespace:Signum.Windows"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" xmlns:Microsoft_Windows_Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"
	x:Class="Signum.Windows.SearchControl"
	x:Name="me">
    <UserControl.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="..\Resources.xaml"/>
                <ResourceDictionary Source="..\BlueMenu.xaml"/>
            </ResourceDictionary.MergedDictionaries>
            <ContextMenu x:Key="contextMenu">
                <MenuItem Header="{m:Loc NewFilter}"  Click="filter_Click"/>
                <Separator/>
                <MenuItem Header="{m:Loc Rename}" Click="renameMenu_Click"/>
                <MenuItem Header="{m:Loc Remove}" Click="removeMenu_Click"/>
            </ContextMenu>
            <Style x:Key="FilterButtonStyle" TargetType="{x:Type ToggleButton}">
                <Style.BasedOn>
                    <Style TargetType="{x:Type ButtonBase}">
                        <Setter Property="FocusVisualStyle">
                            <Setter.Value>
                                <Style>
                                    <Setter Property="Control.Template">
                                        <Setter.Value>
                                            <ControlTemplate>
                                                <Rectangle Stroke="Black" StrokeDashArray="1 2" StrokeThickness="1" Margin="2" SnapsToDevicePixels="True"/>
                                            </ControlTemplate>
                                        </Setter.Value>
                                    </Setter>
                                </Style>
                            </Setter.Value>
                        </Setter>
                        <Setter Property="BorderBrush" Value="#FF707070"/>
                        <Setter Property="BorderThickness" Value="1"/>
                        <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
                        <Setter Property="HorizontalContentAlignment" Value="Center"/>
                        <Setter Property="VerticalContentAlignment" Value="Center"/>
                        <Setter Property="Padding" Value="1"/>
                        <Setter Property="Template">
                            <Setter.Value>
                                <ControlTemplate TargetType="{x:Type ButtonBase}">
                                    <Border x:Name="border" CornerRadius="0,0,5,0">
                                        <ContentPresenter x:Name="contentPresenter" 
                                                          HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" 
                                                          VerticalAlignment="{TemplateBinding VerticalContentAlignment}" 
                                                          SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" 
                                                          Margin="{TemplateBinding Padding}" 
                                                          Content="{TemplateBinding Content}" 
                                                          ContentStringFormat="{TemplateBinding ContentStringFormat}" 
                                                          ContentTemplate="{TemplateBinding ContentTemplate}" 
                                                          RecognizesAccessKey="True"/>
                                    </Border>
                                    <ControlTemplate.Triggers>
                                        <Trigger Property="IsKeyboardFocused" Value="True"/>
                                        <Trigger Property="ToggleButton.IsChecked" Value="True">
                                            <Setter Property="Background" TargetName="border" Value="#FFC9E4FF"/>
                                        </Trigger>
                                        <Trigger Property="IsEnabled" Value="False">
                                            <Setter Property="Foreground" Value="#FFADADAD"/>
                                        </Trigger>
                                        <Trigger Property="IsMouseOver" Value="True">
                                            <Setter Property="Background" TargetName="border" Value="#FFA6D3FF"/>
                                        </Trigger>
                                    </ControlTemplate.Triggers>
                                </ControlTemplate>
                            </Setter.Value>
                        </Setter>
                    </Style>
                </Style.BasedOn>
            </Style>
        </ResourceDictionary>
    </UserControl.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" x:Name="rowFilters"/>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" MinHeight="100"/>
            <RowDefinition Height="32"  />
        </Grid.RowDefinitions>
        <Grid Background="#FFC9E4FF" >
            <Grid.Visibility>
                <MultiBinding Converter="{x:Static m:Converters.AndToVisibility}">
                    <Binding Path="ShowHeader" ElementName="me"/>
                    <Binding Path="ShowFilters" ElementName="me"/>
                </MultiBinding>
            </Grid.Visibility>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" />
                <RowDefinition Height="*" />
            </Grid.RowDefinitions>
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Left" x:Name="nuevoFiltro">
                <m:QueryTokenBuilder x:Name="tokenBuilder" />
                <m:ImageButton Image="..\Images\newFilter.png" Content="{m:Loc NewFilter}" x:Name="btCreateFilter" Margin="2,2,2,2" VerticalAlignment="Center" Click="btCreateFilter_Click" ToolTipService.ShowOnDisabled="True" />
                <m:ImageButton Image="..\Images\newColumn.png" Content="{m:Loc NewColumn}" x:Name="btCreateColumn" Margin="2,2,2,2" VerticalAlignment="Center" Click="btCreateColumn_Click" ToolTipService.ShowOnDisabled="True"
                                   Visibility="{Binding AllowUserColumns, Converter={x:Static m:Converters.BoolToVisibility}, ElementName=me}" />
            </StackPanel>
            <m:FilterBuilder x:Name="filterBuilder" Grid.Row="1"/>
        </Grid>
        <GridSplitter HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Grid.Row="0" Height="3" Background="#FFC9E4FF">
            <GridSplitter.Visibility>
                <MultiBinding Converter="{x:Static m:Converters.AndToVisibility}">
                    <Binding Path="ShowHeader" ElementName="me"/>
                    <Binding Path="ShowFilters" ElementName="me"/>
                </MultiBinding>
            </GridSplitter.Visibility>

        </GridSplitter>
        <StackPanel Orientation="Horizontal" VerticalAlignment="Bottom" HorizontalAlignment="Left" Height="30" Background="Transparent"
                    Visibility="{Binding ShowHeader, Converter={x:Static m:Converters.BoolToVisibility}, ElementName=me}" Grid.Row="1">
            <StackPanel.Resources>
                <Style TargetType="{x:Type Button}" BasedOn="{StaticResource RoundButton}" x:Key="big">
                    <Setter Property="Width" Value="24"/>
                    <Setter Property="Height" Value="24"/>
                    <Setter Property="Margin" Value="3"/>
                    <Setter Property="VerticalAlignment" Value="Center"/>
                </Style>
            </StackPanel.Resources>
            <ToggleButton x:Name="btFilters" 
                          Unchecked="btFilters_Unchecked"
                              IsChecked="{Binding ShowFilters, ElementName=me}"
                              Visibility="{Binding ShowFilterButton, Converter={x:Static m:Converters.BoolToVisibility}, ElementName=me}" Margin="0,0,5,0" Style="{DynamicResource FilterButtonStyle}" Padding="5,1" >
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="{m:Loc Filters}" VerticalAlignment="Center" Margin="3,0,0,0"/>
                </StackPanel>
            </ToggleButton>
            <Button x:Name="btFind" Click="FilterBuilder_SearchClicked"  ToolTip="{m:Loc Find}" Style="{DynamicResource RoundBigButton}" Margin="0,2" Padding="2,0" >
                <StackPanel Orientation="Horizontal">
                    <Border Child="{StaticResource Find}" Width="20" Height="20"/>
                    <TextBlock Text="{m:Loc Find}" TextWrapping="Wrap" Margin="2,0,0,0" VerticalAlignment="Center"/>
                </StackPanel>
            </Button>
            <Button x:Name="btCreate" Content="{DynamicResource Create}" Click="btCreate_Click" ToolTip="{m:Loc CreateNew}" Style="{StaticResource big}"/>
            <Button x:Name="btView" Content="{DynamicResource View}" Click="btView_Click" ToolTip="{m:Loc ViewSelected}" Style="{StaticResource big}"/>
            <Menu IsMainMenu="False" x:Name="menu" VerticalAlignment="Center" Background="Transparent"/>
        </StackPanel>
        <Border x:Name="brMultiplications" BorderBrush="#fbdd73" Background="#fff59d" BorderThickness="1" CornerRadius="2" Margin="1" Padding="2" HorizontalAlignment="Stretch" Visibility="Collapsed" Grid.Row="2">
            <TextBlock x:Name="tbMultiplications"/>
        </Border>
        <ListView x:Name="lvResult"
                Grid.Row="3" 
                MinHeight="100"
                  IsSynchronizedWithCurrentItem="True" 
                  Background="WhiteSmoke"
                  SelectionChanged="lvResult_SelectionChanged" 
			      SelectionMode="{Binding MultiSelection, Converter={x:Static m:Converters.BoolToSelectionMode}, ElementName=me}"
			      VirtualizingStackPanel.IsVirtualizing="True"
                  AllowDrop="{Binding AllowUserColumns, ElementName=me}"
                  DragOver="lvResult_DragOver"
                  Drop="lvResult_Drop">
            <ListView.View>
                <GridView x:Name="gvResults" AllowsColumnReorder="True">
                    <GridView.ColumnHeaderContainerStyle>
                        <Style TargetType="{x:Type GridViewColumnHeader}">                           
                            <EventSetter Event="Click" Handler="GridViewColumnHeader_Click"/>
                        </Style>
                    </GridView.ColumnHeaderContainerStyle>
                </GridView>
            </ListView.View>
            <ListView.ItemContainerStyle>
                <Style TargetType="{x:Type ListViewItem}">
                    <Setter Property="HorizontalContentAlignment" Value="Stretch" />
                    <EventSetter Event="Control.MouseDoubleClick" Handler="lvResult_MouseDoubleClick"/>
                </Style>
            </ListView.ItemContainerStyle>
        </ListView>
        <StackPanel Height="24" Visibility="{Binding ShowFooter, Converter={x:Static m:Converters.BoolToVisibility}, ElementName=me}" Orientation="Horizontal" Grid.Row="4" Margin="6,4,6,4" HorizontalAlignment="Left"  >
            <TextBlock TextWrapping="Wrap" x:Name="tbResultados" Visibility="Hidden" VerticalAlignment="Center" Margin="0,0,5,0">
                <InlineUIContainer>
        		    <TextBlock Text="{Binding Items.Count, ElementName=lvResult, Mode=Default}" TextWrapping="Wrap" FontWeight="Bold" />
        	    </InlineUIContainer><Run Text=" "/><Run Text="{m:Loc Results}"/></TextBlock>
            <TextBlock HorizontalAlignment="Right" VerticalAlignment="Center"><Run Text="{m:Loc Limitation}"/></TextBlock>
            <TextBox Text="{Binding MaxItemsCount, ElementName=me, Converter={x:Static m:Converters.ToInt}}" VerticalAlignment="Center"/>
        </StackPanel>
    </Grid>
</UserControl>

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License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)


Written By
Software Developer (Senior) Signum Software
Spain Spain
I'm Computer Scientist, one of the founders of Signum Software, and the lead developer behind Signum Framework.

www.signumframework.com

I love programming in C#, Linq, Compilers, Algorithms, Functional Programming, Computer Graphics, Maths...

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