Question

I want to disable the selection of text in a textbox using a style preferably. The reason is that I have a style that makes a textbox look like a textblock until a certain criteria (IsRenaming) is met. These are the nodes of a treeview so I don’t want the user to be able to select the text. Here is the style:

<Style x:Key="TextBlockStyleForTextBox" TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
    <Setter Property="Background" Value="Transparent" />
    <Setter Property="BorderThickness" Value="0" />
    <Setter Property="IsReadOnly" Value="True" />
</Style>

<Style x:Key="RenamingTextBox" TargetType="{x:Type TextBox}" BasedOn="{StaticResource TextBlockStyleForTextBox}">
        <Setter Property="Cursor" Value="Arrow"/>
        <Setter Property="Padding" Value="0" />
        <Setter Property="Margin" Value="0" />
        <Style.Triggers>
            <DataTrigger Binding="{Binding IsRenaming}" Value="true">
                <DataTrigger.Setters>
                    <Setter Property="TextBox.IsReadOnly" Value="False" />
                    <Setter Property="Cursor" Value="IBeam" />
                    <Setter Property="Background" >
                        <Setter.Value>
                            <SolidColorBrush Color="{DynamicResource WhiteColor}"/>
                        </Setter.Value>
                    </Setter>
                    <Setter Property="BorderThickness" Value="1" />
                    <Setter Property="Padding" Value="2" />
                    <Setter Property="FocusManager.FocusedElement" Value="{Binding RelativeSource={RelativeSource Self}}"/>
                    <Setter Property="behaviors:TextBoxBehavior.SelectAll" Value="True"/>
                </DataTrigger.Setters>
            </DataTrigger>
        </Style.Triggers>
    </Style>

I don’t think I am overriding the IsReadOnly anywhere. Here is my textbox definition:

<DataTemplate x:Key="MyTemplate" >
        <TextBox Text="{Binding Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" 
                 Tag="{Binding DataContext, RelativeSource={RelativeSource AncestorType=TreeView}}"
                 Style="{StaticResource RenamingTextBox}">

… etc

Answer 1

This is quick and dirty, but it’s a good start/example from our conversation in the other answer, you can and additional tweaks to the style, but it totally works (just tested it)

<Style x:Key="RenamingTextBox" TargetType="{x:Type TextBox}">
        <Style.Setters>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type TextBox}">
                        <Grid>
                            <TextBlock x:Name="block" Visibility="Visible" Text="{TemplateBinding Text}" Margin="1.5"/>
                            <TextBox x:Name="box" Visibility="Collapsed" Text="{TemplateBinding Text}"/>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <DataTrigger Binding="{Binding IsRenaming}" Value="true">
                                <DataTrigger.Setters>
                                    <Setter TargetName="block" Property="TextBox.Visibility" Value="Collapsed" />
                                    <Setter TargetName="box" Property="TextBox.Visibility" Value="Visible" />
                                </DataTrigger.Setters>
                            </DataTrigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style.Setters>
    </Style>