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layer selection in Map Service

FrancoisGilbert

This looks like a simple question

Someone prepares a map package in ArcMap and decides to unselect some layers. When I read this map package in my ArcGis runtime component, all the layers are selected. The layer selection done previously is not kept.

Is there a way to keep this layer selection done in the Map package.

François

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FrancoisGilbert

I finally solved the problem. I have set the layer visibility explicitely in the Legend_Refresh event and now my layers that were not selected in the map package are not selected in my app. It is hard to understand why I need to set the layer visibility when the GetDefaultVisibleLayers sub routine should do the job.

Private Sub Legend_Refreshed(sender As Object, e As Legend.RefreshedEventArgs)
            Try
                ' remove useless base map sublayers
                If TypeOf e.LayerItem.Layer Is ArcGISTiledMapServiceLayer Then
                    e.LayerItem.LayerItems = Nothing
                End If

                'obliger d'ajouter cette partie de code pour déselectionner les layers qui ne sont
                'pas visible dans le map package sinon tous les layer sont sélectionnés

                If Not IsNothing(_currentDynamicServiceLayer) Then

                    For Each sublayer As LayerInfo In _currentDynamicServiceLayer.Layers
                        ' figure out if you wan it visible
                        Dim IsVisible As Boolean
                        IsVisible = False
                        Dim layerInfoArray As ESRI.ArcGIS.Client.LayerInfo() = _currentDynamicServiceLayer.Layers
                        IsVisible = layerInfoArray(sublayer.ID).DefaultVisibility
                        _currentDynamicServiceLayer.SetLayerVisibility(sublayer.ID, IsVisible)
                    Next

                End If

            Catch ex As Exception
                MessageBox.Show(ex.Message)
            End Try

        End Sub

DavidMartin

Go to this link and click on "Download Sample Application" (top right)...

http://resources.arcgis.com/en/help/runtime-wpf/samples/index.html#/SubLayer_List/02q20000003t000000/

FrancoisGilbert

I think I will need a code example because I am getting lost.

DavidMartin

That looks a lot easier to understand! However, refer back to my first post in this thread. It seems that while the visibility of a layer in your map package is captured by LayerInfo.DefaultVisibility, the default for Layer.Visibility is nevertheless always Visible. I'd say you'll therefore need to set your Layer.Visibility explicitly by referring to the relevant LayerInfo.DefaultVisibility. If you do this before your Legend initializes, then I'd imagine you'd see what you'd expect in terms the layer selection therein. If the Legend has already initialized, then you may need to call Legend.Refresh() to get it to sync with the map again (I'm guessing here!).

FrancoisGilbert

I am the one who got mixed-up. The visible and checked properties are the same. I have got back to a simple form
of esri legend. Still, when I display my map package in ArcMap, I have half of the layer selected. In my ArcGis Runtime map
I always have all the layers selected even if the Property="ShowOnlyVisibleLayers" Value="True"

<Style TargetType="esri:Legend">
                <Setter Property="LayerItemsMode" Value="Tree" />
                <Setter Property="ShowOnlyVisibleLayers" Value="True" />

                <Setter Property="MapLayerTemplate" >
                    <Setter.Value>
                        <DataTemplate>
                        <StackPanel Orientation="Horizontal">
                            <CheckBox Content="{Binding Label}"
                                    IsChecked="{Binding IsEnabled, Mode=TwoWay}"
                                    IsEnabled="{Binding IsInScaleRange}" >
                            </CheckBox>
                            <Slider Maximum="1" Value="{Binding Layer.Opacity, Mode=TwoWay}" Width="50" />
                        </StackPanel>
                    </DataTemplate>
                    </Setter.Value>
                </Setter>

                <Setter Property="LayerTemplate">
                    <Setter.Value>
                        <DataTemplate>
                        <CheckBox Content="{Binding Label}"
                            IsChecked="{Binding IsEnabled, Mode=TwoWay}"
                            IsEnabled="{Binding IsInScaleRange}" >
                        </CheckBox>
                    </DataTemplate>

                    </Setter.Value>
                </Setter>
            </Style>

DavidMartin

I may be showing my ignorance here, but I don't understand your distinction between a visible layer and a selected layer. If a layer is selected in the TOC (i.e. its checkbox is ticked) then wouldn't you expect it to be visible in the Map? (Unless it was outside its scale range perhaps?)

Your data template also looks rather complicated. For one thing, you have a checkbox that binds its IsEnabled property to the layer's IsVisible property. That would mean that as soon as the layer is no longer visible, you'd have no means by which to make it visible again (because the checkbox would be disabled). I'd refer to the example given here for a useful starting point:

http://resources.arcgis.com/en/help/runtime-wpf/samples/index.html#/Interactive_Legend/02q2000000nr000000/

FrancoisGilbert

Sorry again,

I do have a style defined for the legend for my TOC control. The "IsChecked" property is bound to "IsVisible" but it does not seem to work. When I step to the code, I see that the layers are not visible but once the TOC display, the layers are all selected.
<Grid VerticalAlignment="Center">
      <CheckBox IsChecked="{Binding IsEnabled, Mode=TwoWay}" />
      <CheckBox IsChecked="{Binding IsEnabled}" IsEnabled="{Binding IsVisible}" IsHitTestVisible="False" />
</Grid>

            <Style TargetType="esri:Legend">
                <Setter Property="LayerItemsMode" Value="Tree" />
                <Setter Property="ShowOnlyVisibleLayers" Value="False" />

                <Setter Property="MapLayerTemplate" >
                    <Setter.Value>
                        <DataTemplate>
                            <StackPanel>
                                <StackPanel.Resources>
                                    <DataTemplate x:Key="BusyIndicatorTemplate">
                                        <Grid x:Name="BusyIndicator" Background="Transparent" Margin="3,0"
                                              HorizontalAlignment="Left" VerticalAlignment="Center" RenderTransformOrigin="0.5,0.5" >
                                            <Grid.Triggers>
                                                <EventTrigger RoutedEvent="Grid.Loaded">
                                                    <EventTrigger.Actions>
                                                        <BeginStoryboard>
                                                            <Storyboard>
                                                                <DoubleAnimation Duration="0:0:1" RepeatBehavior="Forever" To="360" Storyboard.TargetName="BusyIndicator"
                                                             Storyboard.TargetProperty="(UIElement.RenderTransform).(RotateTransform.Angle)" />
                                                            </Storyboard>
                                                        </BeginStoryboard>
                                                    </EventTrigger.Actions>
                                                </EventTrigger>
                                            </Grid.Triggers>

                                            <Grid.RenderTransform>
                                                <RotateTransform />
                                            </Grid.RenderTransform>
                                            <Ellipse Fill="#1E525252" Margin="11,2,11,20" Width="2" Height="2"/>
                                            <Ellipse Fill="#3F525252" Height="3" Width="3" VerticalAlignment="Top" HorizontalAlignment="Right" Margin="0,4,5,0" />
                                            <Ellipse Fill="#7F525252" Width="4" HorizontalAlignment="Right" Height="4" VerticalAlignment="Top" Margin="0,9,1,0" />
                                            <Ellipse Fill="#BF525252" Height="5" Width="5" VerticalAlignment="Bottom" Margin="0,0,3,3" HorizontalAlignment="Right" />
                                            <Ellipse Fill="#FF525252" Height="6" Width="6" VerticalAlignment="Bottom" Margin="9,0" />
                                        </Grid>
                                    </DataTemplate>
                                </StackPanel.Resources>

                                <ToolTipService.ToolTip>
                                    <StackPanel MaxWidth="450">
                                        <TextBlock FontWeight="Bold" Text="{Binding Layer.CopyrightText}" TextWrapping="Wrap" />
                                        <TextBlock Text="{Binding Description}" TextWrapping="Wrap" />
                                        <TextBlock Text="{Binding Layer.Url, StringFormat='Url : {0}'}" />
                                        <TextBlock Text="{Binding MinimumResolution, StringFormat='Minimum Resolution : {0:F6}'}" />
                                        <TextBlock Text="{Binding MaximumResolution, StringFormat='Maximum Resolution : {0:F6}'}" />
                                    </StackPanel>
                                </ToolTipService.ToolTip>

                                <StackPanel Orientation="Horizontal">

                                    <Grid VerticalAlignment="Center">
                                        <CheckBox IsChecked="{Binding IsEnabled, Mode=TwoWay}" />
                                        <CheckBox IsChecked="{Binding IsEnabled}" IsEnabled="{Binding IsVisible}" IsHitTestVisible="False" />
                                    </Grid>
                                    <ContentControl ContentTemplate="{StaticResource BusyIndicatorTemplate}"
                                                    Visibility="{Binding BusyIndicatorVisibility}" VerticalAlignment="Center"/>
                                    <Slider Minimum="0" Maximum="1" Value="{Binding Layer.Opacity, Mode=TwoWay}" Width="30" VerticalAlignment="Center" />
                                    <TextBlock Text="{Binding Label}" FontWeight="Bold" VerticalAlignment="Center" />
                                </StackPanel>
                            </StackPanel>
                        </DataTemplate>
                    </Setter.Value>
                </Setter>

FrancoisGilbert

I do not have any problem with LAYER VISIBILITY, I have problems with LAYER SELECTION.

The layers are all there and they are all visible and are all displayed in the table of content.

What I need is the following ex:

I have 3 visible layer
Only the first one has been selected when the user has produced the map package in ArcMap
My app display the 3 layers and select the 3 of them. Instead, I want to have one the first one selected.

François

DavidMartin

@Francois,
I'm no longer clear now by what you mean when you say the layers are selected in the legend. Do you simply mean they're listed when you want them not to be? If this is the case, you can set Legend.ShowOnlyVisibleLayers = true

RonaldNatalie

After the layer service has been initialized, you can run down and twiddle the visibility.

Example:

                var map_layer= new ArcGISLocalDynamicMapServiceLayer(map_file_name);

                map_layer.Initialized += (s, e) =>
                {
                      foreach (LayerInfo sublayer in map_layer)  {

                             // figure out if you wan it visible
                             map_layer.SetLayerVisibility(sublayer.ID, visible);
                       }

    
                };

FrancoisGilbert

In the XAML code, I have only this below. There are no Datatemplate defined for the legend. Also I think I need to set something like the "check" properties not the "IsEnabled".

            
            <esri:Legend x:Name="MyLegend"
                         ReverseLayersOrder="True"
                         Map="{Binding ElementName=MyMap}"
                         Refreshed="Legend_Refreshed"/>

DavidMartin

If you're using the esri:Legend control as a TOC, then you must have skinned the control by overriding its default DataTemplates.

I'll guess that you have used CheckBoxes in the DataTemplate? So these must have their IsChecked property binding to the IsEnabled property of the LayerItemViewModel class? If this class isn't initializing the IsEnabled property according to the layer visibilities of the Map, then it could be worth calling Legend.Refresh() after you have set the Map's layer visibilities. If that doesn't work, you could always initialize the IsEnabled property in code using the DefaultVisibility previously discussed?

Also worth checking (copied from the doc) :
Note: The Legend.LayerItemsMode Property has great impact on what is displayed in the Legend. For users who want to see the most information available in the Legend, developers should set the LayerItemsMode to Tree. If customizations are made to the MapLayerTemplate and they seem to be overridden at runtime back to a default setting, it is most likely that the LayerItemsMode is set to the default of Flat and it should be set to Tree.

FrancoisGilbert

Here is the source code.
The layers that have not "DefaultVisibility=True" are not added to the visibleLayerIDList which is OK. However, when I display my application with the ESRI:Legend, they all get selected in the table of content. The visibleLayerIDList is filled-up for a layer that is called "DymamicLayer"

        Private Function GetDefaultVisibleLayers(dynamicService As ArcGISLocalDynamicMapServiceLayer) As Integer()
            Try
                Dim visibleLayerIDList As New List(Of Integer)()
                Dim layerInfoArray As ESRI.ArcGIS.Client.LayerInfo() = dynamicService.Layers
                For index As Integer = 0 To layerInfoArray.Length - 1
                    'seulement la configuration statique est sélectionable repli la liste And layerInfoArray(index).SubLayerIds Is Nothing
                    If dynamicService.ID = "StaticLayers" Then
                        _LayerToSelectDictionary.Add(layerInfoArray(index).Name, layerInfoArray(index).ID)
                        If layerInfoArray(index).SubLayerIds IsNot Nothing Then
                            LayerCombobox.Items.Add(layerInfoArray(index).Name) 'layer group
                        Else
                            LayerCombobox.Items.Add(" -" & layerInfoArray(index).Name) 'layer
                        End If
                    End If
                    If layerInfoArray(index).DefaultVisibility Then
                        visibleLayerIDList.Add(index)   'index
                    End If
                Next
                LayerCombobox.SelectedIndex = 0
                Return visibleLayerIDList.ToArray()

            Catch ex As Exception
                Return Nothing
                MessageBox.Show(ex.Message)
            End Try

        End Function

DavidMartin

ESRI.ArcGIS.Client.LayerInfo.DefaultVisibility is probably what you need here. Here's a sample:

http://resources.arcgis.com/en/help/runtime-wpf/samples/index.html#/SubLayer_List/02q20000003t000000/

...where in the code behind, the ArcGISLocalDynamicMapServiceLayer.VisibleLayers is being set on initialization by the method "GetDefaultVisibleLayers", which simply returns an array of Layer IDs, the LayerInfo.DefaultVisibility of which is true.

FrancoisGilbert

An answer would be greatly appreciated

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