/// <inheritdoc />
public override bool InvertSelection(Envelope tolerant, Envelope strict, SelectionMode mode, out Envelope affectedArea)
{
affectedArea = new Envelope();
if (!_selectionEnabled)
{
return(false);
}
bool somethingChanged = false;
MapFrame.SuspendEvents();
foreach (ILayer s in GetLayers())
{
if (s.SelectionEnabled == false)
{
continue;
}
Envelope layerArea;
if (s.InvertSelection(tolerant, strict, mode, out layerArea))
{
somethingChanged = true;
affectedArea.ExpandToInclude(layerArea);
}
}
MapFrame.ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return(somethingChanged);
}
/// <inheritdoc />
public override bool Select(Envelope tolerant, Envelope strict, SelectionMode mode, out Envelope affectedArea)
{
affectedArea = new Envelope();
if (!_selectionEnabled)
{
return(false);
}
bool somethingChanged = false;
MapFrame.SuspendEvents();
foreach (var s in GetLayers()
.Reverse()
.Where(_ => _.SelectionEnabled && _.IsVisible))
{
Envelope layerArea;
if (s.Select(tolerant, strict, mode, out layerArea))
{
somethingChanged = true;
affectedArea.ExpandToInclude(layerArea);
}
// removed by jany_: this selected only features of the first layer with features in the selected area, if user wanted to select features of another layer too they get ignored
// added SelectPlugin enables user to choose the layers in which he wants to select features
//if (somethingChanged)
//{
// MapFrame.ResumeEvents();
// OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
// return somethingChanged;
//}
}
MapFrame.ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return(somethingChanged);
}
/// <inheritdoc />
public override bool ClearSelection(out Envelope affectedAreas)
{
affectedAreas = new Envelope();
bool changed = false;
if (!_selectionEnabled)
{
return(false);
}
MapFrame.SuspendEvents();
foreach (ILayer layer in GetLayers())
{
Envelope layerArea;
if (layer.ClearSelection(out layerArea))
{
changed = true;
affectedAreas.ExpandToInclude(layerArea);
}
}
MapFrame.ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return(changed);
}
/// <inheritdoc />
public override bool Select(IEnvelope tolerant, IEnvelope strict, SelectionMode mode, out IEnvelope affectedArea)
{
affectedArea = new Envelope();
if (!_selectionEnabled)
{
return(false);
}
bool somethingChanged = false;
MapFrame.SuspendEvents();
foreach (var s in GetLayers()
.Reverse()
.Where(_ => _.SelectionEnabled && _.IsVisible))
{
IEnvelope layerArea;
if (s.Select(tolerant, strict, mode, out layerArea))
{
somethingChanged = true;
}
affectedArea.ExpandToInclude(layerArea);
if (somethingChanged)
{
MapFrame.ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return(somethingChanged);
}
}
MapFrame.ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return(somethingChanged);
}
/// <inheritdoc />
public override bool Select(IEnvelope tolerant, IEnvelope strict, SelectionMode mode, out IEnvelope affectedArea)
{
affectedArea = new Envelope();
if (!_selectionEnabled) return false;
bool somethingChanged = false;
MapFrame.SuspendEvents();
foreach (ILayer s in GetLayers())
{
if (s.SelectionEnabled == false) continue;
if (s.IsVisible == false) continue;
IEnvelope layerArea;
if (s.Select(tolerant, strict, mode, out layerArea)) somethingChanged = true;
affectedArea.ExpandToInclude(layerArea);
}
MapFrame.ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return somethingChanged;
}
/// <inheritdoc />
public override bool Select(Envelope tolerant, Envelope strict, SelectionMode mode, out Envelope affectedArea, ClearStates clear)
{
affectedArea = new Envelope();
bool somethingChanged = false;
MapFrame.SuspendEvents();
foreach (var s in GetAllLayers().Where(_ => _.SelectionEnabled && _.IsVisible))
{
if (s.Select(tolerant, strict, mode, out Envelope layerArea, clear))
{
somethingChanged = true;
affectedArea.ExpandToInclude(layerArea);
}
}
MapFrame.ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return(somethingChanged);
}
