// Get camera with specified name
public Camera GetCamera(string name, Group parent)
{
// find the camera
foreach (Camera camera in InnerList)
{
if ((camera.Name == name) && (camera.Parent == parent))
return camera;
}
return null;
}
// Get group with specified name
public Group GetGroup(string name, Group parent)
{
// find the group
foreach (Group group in InnerList)
{
if ((group.Name == name) && (group.Parent == parent))
return group;
}
return null;
}
// Get view with specified name
public View GetView(string name, Group parent)
{
// find the view
foreach (View view in InnerList)
{
if ((view.Name == name) && (view.Parent == parent))
return view;
}
return null;
}
// Load cameras
private void LoadCameras(XmlTextReader reader, Group parent)
{
// load all groups
while (reader.Name == "Group")
{
int depth = reader.Depth;
// create new group
Group group = new Group(reader.GetAttribute("name"));
group.ID = int.Parse(reader.GetAttribute("id"));
group.Description = reader.GetAttribute("desc");
group.Parent = parent;
// add group
camerasGroups.Add(group);
if (group.ID >= nextCamerasGroupID)
nextCamerasGroupID = group.ID + 1;
// move to next node
reader.Read();
// move to next element node
while (reader.NodeType == XmlNodeType.EndElement)
reader.Read();
// read children
if (reader.Depth > depth)
LoadCameras(reader, group);
//
if (reader.Depth < depth)
return;
}
// load all cameras
while (reader.Name == "Camera")
{
int depth = reader.Depth;
// create new camera
Camera camera = new Camera(reader.GetAttribute("name"));
camera.ID = int.Parse(reader.GetAttribute("id"));
camera.Description = reader.GetAttribute("desc");
camera.Parent = parent;
camera.Provider = providers.GetProviderByName(reader.GetAttribute("provider"));
// load configuration
if (camera.Provider != null)
camera.Configuration = camera.Provider.LoadConfiguration(reader);
// add camera
cameras.Add(camera);
if (camera.ID >= nextCameraID)
nextCameraID = camera.ID + 1;
// move to next node
reader.Read();
// move to next element node
while (reader.NodeType == XmlNodeType.EndElement)
reader.Read();
if (reader.Depth < depth)
return;
}
}
// Delete views group
// delete views group if it is empty or return false otherwise
public bool DeleteViewsGroup(Group group)
{
// check if there are subgroups in the group
foreach (Group g in viewsGroups)
{
if (g.Parent == group)
return false;
}
// check if there are view in the group
foreach (View v in views)
{
if (v.Parent == group)
return false;
}
viewsGroups.Remove(group);
// save
SaveViews();
return true;
}
// Delete cameras group
// delete cameras group if it is empty or return false otherwise
public bool DeleteCamerasGroup(Group group)
{
// check if there are subgroups in the group
foreach (Group g in camerasGroups)
{
if (g.Parent == group)
return false;
}
// check if there are cameras in the group
foreach (Camera c in cameras)
{
if (c.Parent == group)
return false;
}
camerasGroups.Remove(group);
// save
SaveCameras();
return true;
}
// Check views group
// check if there is already a group with such name
// return true, if there is no such group
public bool CheckViewsGroup(Group group)
{
foreach (Group g in viewsGroups)
{
if ((group.Name == g.Name) && (group.Parent == g.Parent) && ((group.ID == 0) || (group.ID != g.ID)))
return false;
}
return true;
}
// Ñheck if the cameras group is already exist
private bool CheckCamerasGroup(Group group)
{
return config.CheckCamerasGroup(group);
}
// save views of the parent group
private void SaveViews(XmlTextWriter writer, Group parent)
{
foreach (Group group in viewsGroups)
{
if (group.Parent == parent)
{
// new "Group" node
writer.WriteStartElement("Group");
// write node
writer.WriteAttributeString("id", group.ID.ToString());
writer.WriteAttributeString("name", group.Name);
writer.WriteAttributeString("desc", group.Description);
// write child groups
SaveViews(writer, group);
// close "Group" node
writer.WriteEndElement();
}
}
foreach (View view in views)
{
if (view.Parent == parent)
{
// new "View" node
writer.WriteStartElement("View");
// write node
writer.WriteAttributeString("id", view.ID.ToString());
writer.WriteAttributeString("name", view.Name);
writer.WriteAttributeString("desc", view.Description);
// view size
writer.WriteAttributeString("rows", view.Rows.ToString());
writer.WriteAttributeString("cols", view.Cols.ToString());
writer.WriteAttributeString("width", view.CellWidth.ToString());
writer.WriteAttributeString("height", view.CellHeight.ToString());
// write cameras
string[] strIDs = new string[View.MaxRows * View.MaxCols];
for (int i = 0, k = 0; i < View.MaxRows; i++)
{
for (int j = 0; j < View.MaxCols; j++, k++)
{
strIDs[k] = view.GetCamera(i, j).ToString();
}
}
writer.WriteAttributeString("cameras", string.Join(",", strIDs));
// close "View" node
writer.WriteEndElement();
}
}
}
// Build views of specified parent
private void BuildViewsTree(GroupCollection groups, ViewCollection views, Group parent, TreeNode parentNode)
{
// build all groups
foreach (Group group in groups)
{
if (group.Parent == parent)
{
BuildViewsTree(groups, views, group, AddViewsGroup(group, parentNode));
}
}
// build all views
foreach (View view in views)
{
if (view.Parent == parent)
{
AddView(view, parentNode);
}
}
}
// Build cameras of specified parent
private void BuildCamerasTree(GroupCollection groups, CameraCollection cameras, Group parent, TreeNode parentNode)
{
// build all groups
foreach (Group group in groups)
{
if (group.Parent == parent)
{
BuildCamerasTree(groups, cameras, group, AddCamerasGroup(group, parentNode));
}
}
// build all cameras
foreach (Camera camera in cameras)
{
if (camera.Parent == parent)
{
AddCamera(camera, parentNode);
}
}
}
// Add views group
public TreeNode AddViewsGroup(Group group, TreeNode parentNode)
{
// create new node
TreeNode node = new TreeNode(group.Name, viewsFolderImage, viewsFolderSelectedImage);
// add it to tree
parentNode.Nodes.Add(node);
return node;
}
// Add camera group
public TreeNode AddCamerasGroup(Group group, TreeNode parentNode)
{
// create new node
TreeNode node = new TreeNode(group.Name, camerasFolderImage, camerasFolderSelectedImage);
// add it to tree
if (parentNode == null)
Nodes.Add(node);
else
parentNode.Nodes.Add(node);
return node;
}
// Remove group from the collection
public void Remove(Group group)
{
InnerList.Remove(group);
}
// Load views
private void LoadViews(XmlTextReader reader, Group parent)
{
// load all groups
while (reader.Name == "Group")
{
int depth = reader.Depth;
// create new group
Group group = new Group(reader.GetAttribute("name"));
group.ID = int.Parse(reader.GetAttribute("id"));
group.Description = reader.GetAttribute("desc");
group.Parent = parent;
// add group
viewsGroups.Add(group);
if (group.ID >= nextViewsGroupID)
nextViewsGroupID = group.ID + 1;
// move to next node
reader.Read();
// move to next element node
while (reader.NodeType == XmlNodeType.EndElement)
reader.Read();
// read children
if (reader.Depth > depth)
LoadViews(reader, group);
//
if (reader.Depth < depth)
return;
}
// load all views
while (reader.Name == "View")
{
int depth = reader.Depth;
// create new camera
View view = new View(reader.GetAttribute("name"));
view.ID = int.Parse(reader.GetAttribute("id"));
view.Description = reader.GetAttribute("desc");
view.Parent = parent;
// view size
view.Rows = short.Parse(reader.GetAttribute("rows"));
view.Cols = short.Parse(reader.GetAttribute("cols"));
view.CellWidth = short.Parse(reader.GetAttribute("width"));
view.CellHeight = short.Parse(reader.GetAttribute("height"));
// read cameras
string[] strIDs = reader.GetAttribute("cameras").Split(',');
for (int i = 0, k = 0; i < View.MaxRows; i++)
{
for (int j = 0; j < View.MaxCols; j++, k++)
{
view.SetCamera(i, j, int.Parse(strIDs[k]));
}
}
// add view
views.Add(view);
if (view.ID >= nextViewID)
nextViewID = view.ID + 1;
// move to next node
reader.Read();
// move to next element node
while (reader.NodeType == XmlNodeType.EndElement)
reader.Read();
if (reader.Depth < depth)
return;
}
}
// save cameras of the parent group
private void SaveCameras(XmlTextWriter writer, Group parent)
{
foreach (Group group in camerasGroups)
{
if (group.Parent == parent)
{
// new "Group" node
writer.WriteStartElement("Group");
// write node
writer.WriteAttributeString("id", group.ID.ToString());
writer.WriteAttributeString("name", group.Name);
writer.WriteAttributeString("desc", group.Description);
// write child groups
SaveCameras(writer, group);
// close "Group" node
writer.WriteEndElement();
}
}
foreach (Camera camera in cameras)
{
if (camera.Parent == parent)
{
// new "Camera" node
writer.WriteStartElement("Camera");
// write node
writer.WriteAttributeString("id", camera.ID.ToString());
writer.WriteAttributeString("name", camera.Name);
writer.WriteAttributeString("desc", camera.Description);
if (camera.Provider != null)
{
// write provider name
writer.WriteAttributeString("provider", camera.Provider.ProviderName);
if (camera.Configuration != null)
{
// write camera configuration
camera.Provider.SaveConfiguration(writer, camera.Configuration);
}
}
// close "Camera" node
writer.WriteEndElement();
}
}
}
// On "Ok" button click
private void okButton_Click(object sender, System.EventArgs e)
{
string name = nameBox.Text.Replace('\\', ' ');
if (checkGroupFunction != null)
{
Group tmpGroup = new Group(name);
tmpGroup.ID = group.ID;
tmpGroup.Parent = group.Parent;
// check group
if (checkGroupFunction(tmpGroup) == false)
{
Color tmp = this.nameBox.BackColor;
// highligh name edit box
this.nameBox.BackColor = Color.LightCoral;
// error message
MessageBox.Show(this, "A group with such name is already exist", "Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
// restore & focus name edit box
this.nameBox.BackColor = tmp;
this.nameBox.Focus();
return;
}
}
// update groups name and description
group.Name = name;
group.Description = descriptionBox.Text;
// close the dialog
this.DialogResult = DialogResult.OK;
this.Close();
}
// Add new camera group
public void AddCamerasGroup(Group group)
{
group.ID = nextCamerasGroupID++;
camerasGroups.Add(group);
// save
SaveCameras();
}
// Add new views group
public void AddViewsGroup(Group group)
{
group.ID = nextViewsGroupID++;
viewsGroups.Add(group);
// save
SaveViews();
}
// Ñheck if the views group is already exist
private bool CheckViewsGroup(Group group)
{
return config.CheckViewsGroup(group);
}
// Add new group to the collection
public void Add(Group group)
{
InnerList.Add(group);
}
