/// <summary>
/// class constructor
/// </summary>
/// <param name="weatherLayer"></param>
public WeatherItemSelectionDlg(RSSWeatherLayerClass weatherLayer, IActiveView activeView)
{
InitializeComponent();
//get the layer
m_weatherLayer = weatherLayer;
m_activeView = activeView;
//get the list of all citynames for all items in the layer
m_cityNames = m_weatherLayer.GetCityNames();
//create a table to host the citynames
m_weatherItemsTable = new DataTable("CityNames");
m_weatherItemsTable.Columns.Add("CITYNAME", typeof(string));
//populate the listbox and build a table containing the items
PopulateList();
}
/// <summary>
/// Occurs when this command is clicked
/// </summary>
public override void OnClick()
{
try
{
if (0 == m_hookHelper.FocusMap.LayerCount)
return;
//get the weather layer
IEnumLayer layers = m_hookHelper.FocusMap.get_Layers(null, false);
layers.Reset();
ILayer layer = layers.Next();
while(layer != null)
{
if(layer is RSSWeatherLayerClass)
{
m_weatherLayer = (RSSWeatherLayerClass)layer;
break;
}
layer = layers.Next();
}
//in case that the layer exists
if(null != m_weatherLayer)
{
//launch the zipCode input dialog
ZipCodeDlg dlg = new ZipCodeDlg();
if(DialogResult.OK == dlg.ShowDialog())
{
long zipCode = dlg.ZipCode;
if(0 != zipCode)
{
//add the weather item to the layer
m_weatherLayer.AddItem(zipCode);
//if the user checked the 'ZoomTo' checkbox, zoom to the item
if(dlg.ZoomToItem)
{
m_weatherLayer.ZoomTo(zipCode);
}
}
}
}
}
catch(Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
}
}
/// <summary>
/// Occurs when this command is clicked
/// </summary>
public override void OnClick()
{
try
{
if(m_pHookHelper.FocusMap.LayerCount == 0)
return;
//get the weather layer
IEnumLayer layers = m_pHookHelper.FocusMap.get_Layers(null, false);
layers.Reset();
ILayer layer = layers.Next();
while(layer != null)
{
if(layer is RSSWeatherLayerClass)
{
m_weatherLayer = (RSSWeatherLayerClass)layer;
break;
}
layer = layers.Next();
}
if(m_weatherLayer != null)
{
if(null == m_selectionDlg || m_selectionDlg.IsDisposed)
{
m_selectionDlg = new WeatherItemSelectionDlg(m_weatherLayer, m_pHookHelper.ActiveView);
}
m_selectionDlg.Show();
}
}
catch(Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
}
}
public void Dispose()
{
if(!m_identifyDlg.IsDisposed)
m_identifyDlg.Dispose();
m_weatherLayer = null;
m_propset = null;
}
/// <summary>
/// Indicates if the object can identify the specified layer
/// </summary>
/// <param name="pLayer"></param>
/// <returns></returns>
public bool CanIdentify(ILayer pLayer)
{
if(!(pLayer is RSSWeatherLayerClass))
return false;
//cache the layer
m_weatherLayer = (RSSWeatherLayerClass)pLayer;
return true;;
}
/// <summary>
/// Listen to ActiveViewEvents.ItemDeleted in order to track whether the layer has been
/// removed from the TOC
/// </summary>
/// <param name="Item"></param>
void OnItemDeleted(object Item)
{
//test that the deleted layer is RSSWeatherLayerClass
if (Item is RSSWeatherLayerClass)
{
if (m_bConnected && null != m_weatherLayer)
{
m_bConnected = false;
//disconnect from the service
m_weatherLayer.Disconnect();
//dispose the layer
m_weatherLayer = null;
m_bOnce = true;
}
}
}
/// <summary>
/// Occurs when this command is clicked
/// </summary>
public override void OnClick()
{
try
{
if(!m_bConnected)
{
//check first that the layer was added to the globe
if(m_bOnce == true)
{
//instantiate the layer
m_weatherLayer = new RSSWeatherLayerClass();
m_invokeHelper = new InvokeHelper(m_pHookHelper.ActiveView, m_weatherLayer);
m_bOnce = false;
}
//test whether the layer has been added to the map
bool bLayerHasBeenAdded = false;
ILayer layer = null;
if(m_pHookHelper.FocusMap.LayerCount != 0)
{
IEnumLayer layers = m_pHookHelper.FocusMap.get_Layers(null, false);
layers.Reset();
layer = layers.Next();
while(layer != null)
{
if(layer is RSSWeatherLayerClass)
{
bLayerHasBeenAdded = true;
break;
}
layer = layers.Next();
}
}
//add the layer to the map
if(!bLayerHasBeenAdded)
{
layer = (ILayer)m_weatherLayer;
layer.Name = "RSS Weather Layer";
try
{
m_pHookHelper.FocusMap.AddLayer(layer);
//wires layer's events
m_weatherLayer.OnWeatherItemAdded += new WeatherItemAdded(OnWeatherItemAdded);
m_weatherLayer.OnWeatherItemsUpdated += new WeatherItemsUpdated(OnWeatherItemsUpdated);
}
catch(Exception ex)
{
System.Diagnostics.Trace.WriteLine("Failed" + ex.Message);
}
}
//connect to the service
m_weatherLayer.Connect();
}
else
{
//disconnect from the service
m_weatherLayer.Disconnect();
//un-wires layer's events
m_weatherLayer.OnWeatherItemAdded -= new WeatherItemAdded(OnWeatherItemAdded);
m_weatherLayer.OnWeatherItemsUpdated -= new WeatherItemsUpdated(OnWeatherItemsUpdated);
//delete the layer
m_pHookHelper.FocusMap.DeleteLayer(m_weatherLayer);
//dispose the layer
m_weatherLayer = null;
m_bOnce = true;
}
m_bConnected = !m_bConnected;
}
catch(Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
}
}
public InvokeHelper (IActiveView activeView, RSSWeatherLayerClass weatherLayer)
{
m_activeView = activeView;
m_weatherLayer = weatherLayer;
CreateHandle();
CreateControl();
m_invalidateExtent = new EnvelopeClass();
m_invalidateExtent.SpatialReference = activeView.ScreenDisplay.DisplayTransformation.SpatialReference;
m_point = new PointClass();
m_point.SpatialReference = activeView.ScreenDisplay.DisplayTransformation.SpatialReference;
}
/// <summary>
/// Occurs when this command is clicked
/// </summary>
public override void OnClick()
{
try
{
if (0 == m_hookHelper.FocusMap.LayerCount)
return;
//get the weather layer
IEnumLayer layers = m_hookHelper.FocusMap.get_Layers(null, false);
layers.Reset();
ILayer layer = layers.Next();
while(layer != null)
{
if(layer is RSSWeatherLayerClass)
{
m_weatherLayer = (RSSWeatherLayerClass)layer;
break;
}
layer = layers.Next();
}
}
catch(Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
}
}
