/// <summary>
/// A method to compare if two MenuItems are the same.
/// </summary>
/// <param name="otherItem">The other MenuItem to compare with.</param>
/// <returns>Bool indicating if they are the same.</returns>
public bool Equals(MenuItem otherItem)
{
if (this.Title == otherItem.Title && this.FilePath == otherItem.FilePath)
{
return true;
}
else
{
return false;
}
}
/// <summary>
/// Update the currentLocation object in order to setup the
/// time slider for the images of the selected location.
/// </summary>
/// <param name="newLocation">New location value for currentLocation.</param>
/// <param name="childToSelect">Child image for the location that should be visible.</param>
private void UpdateCurrentLocation(MenuItem newLocation, MenuItem childToSelect)
{
this.currentLocation = newLocation;
this.TimeSliderMax = this.currentLocation.Items.Count;
// Set the TimeSlider to show the newly added child on the map
bool foundChild = false;
for (int i = 0; i < newLocation.Items.Count; i++)
{
if (newLocation.Items[i].Title == childToSelect.Title)
{
this.TimeSliderValue = i + 1;
foundChild = true;
break;
}
}
// Default value just in case.
if (!foundChild)
{
this.TimeSliderValue = 1;
}
}
/// <summary>
/// This method converts all of the information from the remove layers
/// window and returns it as a list of menuitems. This is how the
/// remove layers window returns the results of the users actions.
/// </summary>
/// <returns>List of MenuItems including the user's checkbox selections.</returns>
public List<MenuItem> GetMenuItems()
{
List<MenuItem> locationsToKeep = new List<MenuItem>();
// Don't include the root, which is the "All" selection.
List<RemoveLayersViewModel> locations = this.root.Children;
foreach (RemoveLayersViewModel location in locations)
{
// Add the location to the list.
MenuItem loc;
if (location.IsChecked == true)
{
loc = new MenuItem(location.Name, location.FilePath, location.TreeCanopyFilePath, true);
}
else
{
loc = new MenuItem(location.Name, location.FilePath, location.TreeCanopyFilePath, false);
}
// Add each of the times for that location to that children of that location.
foreach (RemoveLayersViewModel time in location.Children)
{
MenuItem t;
if (time.IsChecked == true)
{
t = new MenuItem(time.Name, time.FilePath, time.TreeCanopyFilePath, true);
}
else
{
t = new MenuItem(time.Name, time.FilePath, time.TreeCanopyFilePath, false);
}
loc.Items.Add(t);
}
locationsToKeep.Add(loc);
}
return locationsToKeep;
}
/// <summary>
/// Update the currentLocation object in order to setup the
/// time slider for the images of the selected location.
/// </summary>
/// <param name="newLocation">New location value for currentLocation.</param>
private void UpdateCurrentLocation(MenuItem newLocation)
{
if (newLocation == null)
{
return;
}
this.currentLocation = newLocation;
this.TimeSliderMax = this.currentLocation.Items.Count;
this.TimeSliderValue = 1;
}
/// <summary>
/// "Remove Layers" button callback.
/// This pops up a window which allows the user to select which layers they wish to remove.
/// The TreeView of layers is updated accordingly.
/// </summary>
/// <param name="parameter">Layer to be removed</param>
private void RemoveLayer(object parameter)
{
RemoveLayers win = new RemoveLayers(RemoveLayersViewModel.CreateViewModels(this.TreeViewItems));
win.ShowDialog();
List<MenuItem> itemsList = win.GetMenuItems();
// For each parent
for (int i = itemsList.Count - 1; i >= 0; i--)
{
// Remove all selected children
for (int j = itemsList[i].Items.Count - 1; j >= 0; j--)
{
if (itemsList[i].Items[j].Checked)
{
this.UnloadKML(itemsList[i].Items[j].FilePath);
this.UnloadKML(itemsList[i].Items[j].TreeCanopyFilePath);
itemsList[i].Items.Remove(itemsList[i].Items[j]);
}
}
// Remove the parent if necessary
if (itemsList[i].Checked || itemsList[i].Items.Count == 0)
{
// KML layers are loaded and unloaded at the child level
// so we do not need an UnloadKML here.
itemsList.Remove(itemsList[i]);
}
}
this.TreeViewItems = new ObservableCollection<MenuItem>(itemsList);
win.Close();
// Update the current location.
// First, check to see if the current location still exists.
bool locationStillExists = false;
foreach (MenuItem location in this.treeViewItems)
{
if (this.currentLocation.Title == location.Title)
{
// The location still exists, so update it
// in case any DateTimes were removed from it.
this.UpdateCurrentLocation(location);
locationStillExists = true;
break;
}
}
// Or, if the location does not exist, then default to the first one.
if (!locationStillExists)
{
this.currentLocation = this.treeViewItems.FirstOrDefault();
}
List<Dataset> layers = new List<Dataset>();
string json;
this.CollectAllTreeItems(this.treeViewItems, layers);
json = JsonConvert.SerializeObject(layers.ToArray());
if (layers.Count == 0)
{
json = string.Empty;
}
System.IO.File.WriteAllText("../../Layers.json", json);
}
/// <summary>
/// Initializes a new instance of the <see cref="MainViewModel" /> class.
/// This is the constructor for the MainViewModel.
/// When the view model initializes, it reads the map from the App.xaml resources.
/// </summary>
/// <param name="window">The window the mainviewmodel belongs to.</param>
public MainViewModel(MainWindow window)
{
this.mainWindow = window;
this.viewTreeAnalytics = false;
this.Map = App.Current.Resources["IncidentMap"] as Map;
this.TreeViewItems = new ObservableCollection<MenuItem>();
// Read JSON file to get all existing layers
List<Dataset> layers;
string json;
using (StreamReader r = new StreamReader("../../Layers.json"))
{
json = r.ReadToEnd();
layers = JsonConvert.DeserializeObject<List<Dataset>>(json);
}
// Backup to manually set up layers in case Layers.json is empty
if (layers != null)
{
// Create MenuItems for all locations
List<MenuItem> locations = new List<MenuItem>();
foreach (Dataset ds in layers)
{
MenuItem currentLocationRootNode = null;
foreach (MenuItem item in locations)
{
if (item.Title == ds.Location)
{
currentLocationRootNode = item;
}
}
// If location has not been added already
if (currentLocationRootNode == null)
{
// Construct new root level node
MenuItem node = new MenuItem()
{
Title = ds.Location,
FilePath = ds.FilePath,
TreeCanopyFilePath = ds.TreeCanopyFilePath
};
// Add first subnode to new root level node
node.Items.Add(new MenuItem()
{
Title = ds.Time.ToString(),
FilePath = ds.FilePath,
TreeCanopyFilePath = ds.TreeCanopyFilePath
});
locations.Add(node);
}
else
{
// If location has been added already
// Add another subnode to exisiting root level node
currentLocationRootNode.Items.Add(new MenuItem()
{
Title = ds.Time.ToString(),
FilePath = ds.FilePath,
TreeCanopyFilePath = ds.TreeCanopyFilePath
});
}
}
// Add root level nodes to tree
foreach (MenuItem item in locations)
{
this.TreeViewItems.Add(item);
}
this.UpdateCurrentLocation(locations.First());
foreach (MenuItem item in locations.First().Items)
{
this.LoadKml(item.FilePath, true, true);
}
}
this.datasetList = new List<Dataset>();
this.AddLayerCommand = new DelegateCommand(this.AddLayer);
this.RemoveLayerCommand = new DelegateCommand(this.RemoveLayer);
}
/// <summary>
/// This method is called when the user clicks on an item in
/// the layers treeview in the popout right side menu. It
/// updates the currently selected image on the map as the
/// one that the user clicked on.
/// </summary>
/// <param name="newlySelectedItem">The new images selected by
/// the user to show on the map.</param>
/// <param name="updateLocation">Flag to determine if we should set this location as the current
/// location active on the time bar.</param>
public void UpdateSelectedItem(MenuItem newlySelectedItem, bool updateLocation = true)
{
List<MenuItem> treeViewItemList = this.TreeViewItems.ToList();
// Iterate through each location.
foreach (MenuItem location in treeViewItemList)
{
bool activeLocation = false;
// First, check to see if the user clicked a location
if (location.Equals(newlySelectedItem))
{
// Failed attempt at panning on click
//Layer selectedLayer = this.Map.Layers[location.Items.First().FilePath];
//this.MapView.SetView(selectedLayer.FullExtent.GetCenter());
// Very Ghetto way to pan to the selected image.
if (this.ViewTreeAnalytics)
{
this.UnloadKML(location.Items.First().TreeCanopyFilePath);
this.LoadKml(location.Items.First().TreeCanopyFilePath, true, true);
}
else
{
this.UnloadKML(location.Items.First().FilePath);
this.LoadKml(location.Items.First().FilePath, true, true);
}
// If so, then select its first child
if (updateLocation)
{
this.UpdateCurrentLocation(location);
}
location.Items.First().Checked = true;
location.Checked = true;
activeLocation = true;
this.NotifiyPropertyChanged("TreeViewItems");
}
else
{
// Else, iterate through this location's children to see if
// one of them was selected.
foreach (MenuItem time in location.Items)
{
// If this child was the selected item,
// then set it as the active image.
if (time.Equals(newlySelectedItem))
{
if (updateLocation)
{
this.UpdateCurrentLocation(location, time);
}
// Very Ghetto way to pan to the selected image.
if (this.ViewTreeAnalytics)
{
this.UnloadKML(time.TreeCanopyFilePath);
this.LoadKml(time.TreeCanopyFilePath, true, true);
}
else
{
this.UnloadKML(time.FilePath);
this.LoadKml(time.FilePath, true, true);
}
time.Checked = true;
location.Checked = true;
activeLocation = true;
this.NotifiyPropertyChanged("TreeViewItems");
}
else
{
time.Checked = false;
}
}
}
// If this location, nor any of its children
// were selected, then make sure it is not highlighted.
if (!activeLocation)
{
location.Checked = false;
}
}
}
/// <summary>
/// "Add Layer" button callback
/// Pops up a window that gets the user to input the necessary information
/// for adding a new layer and then adds the layer.
/// </summary>
/// <param name="parameter">The window being passed.</param>
public void AddLayer(object parameter)
{
// Generate list of location names
ObservableCollection<string> locations = new ObservableCollection<string>();
foreach (MenuItem item in this.treeViewItems)
{
locations.Add(item.Title);
}
// Popup a window to get the layer information
AddLayer addLayer = new AddLayer(locations);
addLayer.Owner = (Window)parameter; // In the XAML we pass the window as the parameter
addLayer.ShowDialog();
// Get the data from the AddLayer window
Dataset newLayer = addLayer.DatasetToAdd;
addLayer.Close();
// Read JSON file with existing layers
List<Dataset> layers;
string json;
using (StreamReader r = new StreamReader("../../Layers.json"))
{
json = r.ReadToEnd();
layers = JsonConvert.DeserializeObject<List<Dataset>>(json);
}
// Save new layer to flat JSON file
if (layers == null)
{
layers = new List<Dataset>();
}
layers.Add(newLayer);
json = JsonConvert.SerializeObject(layers.ToArray());
System.IO.File.WriteAllText("../../Layers.json", json);
if (!string.IsNullOrEmpty(newLayer.FilePath))
{
// TODO - somewhere around here execute the code to do the tree analysis on the new image
// Presently, this will not require a change in the treeview, so the new image can go straight
// to LoadKML()
TreeLineDetection temp = new TreeLineDetection();
Task.Run(() => temp.ConvertFolder((new FileInfo(newLayer.FilePath)).DirectoryName, this.mainWindow));
// Save the new dataset
this.datasetList.Add(newLayer);
// See if the Location already exists
bool locationExists = false;
foreach (MenuItem location in this.TreeViewItems)
{
// If so, then add the new layer as a child of that Location
if (location.Title == newLayer.Location)
{
MenuItem newChild = new MenuItem(newLayer.Time.ToString(), newLayer.FilePath, location.TreeCanopyFilePath);
location.Items.Add(newChild);
// Sort the children based on time
location.Items = new ObservableCollection<MenuItem>(location.Items.OrderBy(time => time.Title).ToList());
this.UpdateCurrentLocation(location, newChild);
locationExists = true;
break;
}
}
// If not, then we also need to add the Location to the treeview
if (!locationExists)
{
// Add it to the TreeView on the UI
MenuItem root = new MenuItem(newLayer.Location, newLayer.FilePath, newLayer.TreeCanopyFilePath);
root.Items.Add(new MenuItem(newLayer.Time.ToString(), newLayer.FilePath, newLayer.TreeCanopyFilePath));
this.TreeViewItems.Add(root);
this.UpdateCurrentLocation(root);
}
// Open the new layer
this.LoadKml(newLayer.FilePath, newLayer.ZoomTo, false);
}
Debug.WriteLine("Location: " + newLayer.Location);
Debug.WriteLine("Time: " + newLayer.Time);
Debug.WriteLine("File Path: " + newLayer.FilePath);
}
