/// <summary>
/// Handles changes to the PopupInfo property.
/// </summary>
private static void OnPopupInfoChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PopupCommandBase cmd = (PopupCommandBase)d;
ESRI.ArcGIS.Client.Extensibility.PopupInfo oldPopupInfo = (ESRI.ArcGIS.Client.Extensibility.PopupInfo)e.OldValue;
ESRI.ArcGIS.Client.Extensibility.PopupInfo newPopupInfo = cmd.PopupInfo;
if (newPopupInfo != oldPopupInfo)
{
cmd.OnPopupInfoChanged(oldPopupInfo, newPopupInfo);
}
}
public void Execute(object parameter)
{
ESRI.ArcGIS.Client.Extensibility.PopupInfo param = parameter as ESRI.ArcGIS.Client.Extensibility.PopupInfo;
if (param == null || param.PopupItem == null)
{
return;
}
CustomGraphicsLayer cgl = param.PopupItem.Layer as CustomGraphicsLayer;
if (cgl != null && param.PopupItem.Graphic != null)
{
cgl.OnItemClicked(param.PopupItem.Graphic);
}
}
public bool CanExecute(object parameter)
{
ESRI.ArcGIS.Client.Extensibility.PopupInfo param = parameter as ESRI.ArcGIS.Client.Extensibility.PopupInfo;
if (param == null || param.PopupItem == null)
{
return(false);
}
CustomGraphicsLayer cgl = param.PopupItem.Layer as CustomGraphicsLayer;
if (cgl != null && param.PopupItem.Graphic != null)
{
return(true);
}
return(false);
}
/// <summary>
/// Normally the popupinfo changes every time a new popup is displayed. Each time, we bind the
/// current PopupItem to our dependency property so that if it changes, we can fire a CanExecuteChanged
/// event on our command
/// </summary>
protected virtual void OnPopupInfoChanged(ESRI.ArcGIS.Client.Extensibility.PopupInfo oldPopupInfo, ESRI.ArcGIS.Client.Extensibility.PopupInfo newPopupInfo)
{
// remove existing binding
ClearValue(PopupItemProperty);
if (newPopupInfo != null)
{
// Bind the popupinfo's popupItem to ours so that we can cause
// the command to check its CanExecute state
var b = new Binding("PopupItem")
{
Source = newPopupInfo
};
BindingOperations.SetBinding(this, PopupItemProperty, b);
}
RefreshCommand();
}
internal static void rebuildMapTipContentsBasedOnFieldVisibility(HoverResults results)
{
HoverResults hr = results as HoverResults;
if (hr == null)
{
return;
}
GraphicsLayer hrLayer = hr.Layer;
if (hr.Graphic == null || hr.Graphic.Attributes == null || hrLayer == null)
{
hr.Visibility = Visibility.Collapsed;
return;
}
Visibility hrVisibility = Visibility.Visible;
IEnumerable <FieldInfo> fields = ESRI.ArcGIS.Mapping.Core.LayerExtensions.GetFields(hrLayer); // Store the fields on the Map Tips element
string displayField = ESRI.ArcGIS.Mapping.Core.LayerExtensions.GetDisplayField(hrLayer);
if (string.IsNullOrEmpty(displayField))
{
displayField = FieldInfo.GetDefaultDisplayField(fields);
ESRI.ArcGIS.Mapping.Core.LayerExtensions.SetDisplayField(hrLayer, displayField);
}
Graphic popupGraphic = hr.Graphic;
PopupItem popupItem = new PopupItem()
{
DataTemplate = null,
Graphic = popupGraphic,
Layer = hrLayer,
LayerName = ESRI.ArcGIS.Mapping.Core.LayerExtensions.GetLayerName(hrLayer),
Title = null,
TitleExpression = null,
};
popupItem.FieldInfos = MapTipsHelper.ToFieldSettings(ESRI.ArcGIS.Mapping.Core.LayerExtensions.GetFields(hrLayer));
MapTipsHelper.GetTitle(popupItem, null);
bool hasContent = false;
popupItem.DataTemplate = MapTipsHelper.BuildMapTipDataTemplate(popupItem, out hasContent);
if (!hasContent)
{
popupItem.DataTemplate = null;
}
ESRI.ArcGIS.Client.Extensibility.PopupInfo popupInfo = new ESRI.ArcGIS.Client.Extensibility.PopupInfo()
{
AttributeContainer = hr.AttributeContainer,
Container = hr,
PopupItem = popupItem
};
hr.PopupInfo = popupInfo;
bool hasTitle = !string.IsNullOrEmpty(popupInfo.PopupItem.Title);
if (hasTitle || hasContent)
{
hrVisibility = Visibility.Visible;
// re-establish delay
TimeSpan delay = (TimeSpan)hr.Map.GetValue(DelayMapTipHide.HideDelayProperty);
hrLayer.MapTip.SetValue(GraphicsLayer.MapTipHideDelayProperty, delay);
}
else
{
hrVisibility = Visibility.Collapsed;
}
hr.Visibility = hrVisibility;
}
void attributeChangeEventHookups(PopupInfo popupInfo, bool hookup)
{
if (PopupInfo != null)
{
if (hookup)
PopupInfo.PopupItem.PropertyChanged += PopupItem_PropertyChanged;
else
PopupInfo.PopupItem.PropertyChanged -= PopupItem_PropertyChanged;
}
}
