private void Uninitialize()
{
if (s_extension == null)
{
return;
}
if (m_map == null)
{
return;
}
// Detach event handlers
IActiveViewEvents_Event avEvent = m_map as IActiveViewEvents_Event;
avEvent.ItemAdded -= AvEvent_ItemAdded;
avEvent.ItemDeleted -= AvEvent_ItemAdded;
//avEvent.SelectionChanged -= UpdateSelCountDockWin;
avEvent.ContentsChanged -= avEvent_ContentsChanged;
avEvent = null;
// Update UI
LayerDropdown selCombo = LayerDropdown.GetTheComboBox();
if (selCombo != null)
{
selCombo.ClearAll();
}
}
private void AvEvent_ItemAdded(object Item)
{
m_map = ArcMap.Document.FocusMap;
if (m_map != null)
{
LayerDropdown.FillComboBox(m_map);
}
m_hasSelectableLayer = CheckForSelectableLayer();
}
public LayerDropdown()
{
s_comboBox = this;
if (m_map == null)
{
m_map = ArcMap.Document.FocusMap;
if (m_map == null)//if it's still null then bail
{
return;
}
}
FillComboBox(m_map);
}
// Privates
private void Initialize()
{
// If the extension hasn't been started yet, bail
if (s_extension == null)
{
return;
}
//// Reset event handlers
IActiveViewEvents_Event avEvent = ArcMap.Document.FocusMap as IActiveViewEvents_Event;
if (avEvent == null)
{
return;
}
avEvent.ItemAdded += AvEvent_ItemAdded;
avEvent.ItemDeleted += AvEvent_ItemAdded;
avEvent.ContentsChanged += avEvent_ContentsChanged;
// Update the UI
m_map = ArcMap.Document.FocusMap;
LayerDropdown.FillComboBox(m_map);
m_hasSelectableLayer = CheckForSelectableLayer();
}
internal static void FillComboBox(IMap theMap)
{
LayerDropdown selCombo = LayerDropdown.GetTheComboBox();
if (selCombo == null)
{
return;
}
//hold onto the currently selected layer name, before the combo box is cleared
IFeatureLayer pFlyr = null;
if (selCombo.items.Count > 1)
{
pFlyr = (IFeatureLayer)selCombo.GetItem(selCombo.Selected).Tag;
}
selCombo.ClearAll();
IFeatureLayer featureLayer;
ICompositeLayer pCompLyr = null;
LayerManager ext_PntLyrMan = LayerManager.GetExtension();
bool bUseLines = false;
if (ext_PntLyrMan != null)
{
bUseLines = ext_PntLyrMan.UseLines;
}
// Loop through the layers in the map and add the layer's name to the combo box.
int lLayerCount = 0;
int cookie = 0;
int resetCookie = 0;
for (int i = 0; i < theMap.LayerCount; i++)
{
bool bIsComposite = false;
ILayer pLayer = theMap.get_Layer(i);
if (pLayer is ICompositeLayer)
{
pCompLyr = (ICompositeLayer)pLayer;
bIsComposite = true;
}
int iCompositeLyrCnt = 1;
if (bIsComposite)
{
iCompositeLyrCnt = pCompLyr.Count;
}
for (int j = 0; j <= (iCompositeLyrCnt - 1); j++)
{
if (bIsComposite)
{
pLayer = pCompLyr.get_Layer(j);
}
if (pLayer is IFeatureLayer)
{
featureLayer = pLayer as IFeatureLayer;
if (featureLayer is ICadastralFabricSubLayer2)
{
break;
}
if (featureLayer.FeatureClass == null)
{
continue;
}
if (featureLayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPoint && !bUseLines ||
featureLayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline && bUseLines)
{
cookie = selCombo.AddItem(featureLayer.Name, featureLayer);
if (pFlyr != null)
{
if (featureLayer.Name == pFlyr.Name)
{
resetCookie = cookie;
}
}
lLayerCount++;
}
}
}
if (lLayerCount > 1)
{
selCombo.Select(cookie);//select the last one added
}
}
if (pFlyr == null)
{
if (lLayerCount > 1)
{
selCombo.Select(cookie);//select the last one added
}
else if (lLayerCount == 0)
{
m_fl = null;
}
}
else if (lLayerCount > 1)// else set the combo box to the originally selected layer
{
selCombo.Select(resetCookie);
}
}
//event handlers
private void avEvent_ContentsChanged()
{
m_hasSelectableLayer = CheckForSelectableLayer();
LayerDropdown.FillComboBox(m_map);
}
