Infralution Support Forum Index Infralution Support
Support groups for Infralution products
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Custom type editor

 
Post new topic   Reply to topic    Infralution Support Forum Index -> Virtual Tree Support
View previous topic :: View next topic  
Author Message
Mrdec



Joined: 04 May 2006
Posts: 7
PostPosted: Thu Jun 08, 2006 5:11 pm    Post subject: Custom type editor Reply with quote
Hello,

I need help with custom UITypeEditor. For demonstration of the problem I wrote following example. There are two columns Name and Value in my tree. The Value column is editable (by UniversalEditBox). I have my custom UITypeEditor named MyUITypeEditor (in this simple example it does nothing but shows only dropdown button).
I use programatic binding to MyObj objects. I would like to use my custom editor in case of MyObj.UseCombo property is equal to true, otherwise use default editor.

I expected that I could use in tree_GetCellData event handler this assignment:
Code:

e.CellData.TypeEditor = myUITypeEditor;

But it sometimes works and sometimes doesn't. I attached animated gif to demonstrate it. Objects with values "A", "AA" have UseCombo=false and objects with values "B", "BB" have UseCombo=true. First time it works (A's have editbox B's have combobox, but I collapse and expand root node and all of them have combobox)



Could you help me, please?
Thanks, Mrdec

MyObj object used for binding
Code:

public class MyObj
{
    public string Name;
    public string Value;
    public bool UseCombo;
    public List<MyObj> Children = new List<MyObj>();
    public MyObj Parent;

    public MyObj(MyObj parent, string name, string val, bool useCombo)
    {
        Parent = parent;
        Name = name;
        Value = val;
        UseCombo = useCombo;
    }
}


MyUITypeEditor custom UITypeEditor
Code:

    public class MyUITypeEditor : UITypeEditor
    {
        public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
        {
            return UITypeEditorEditStyle.DropDown;
        }
    }



MyForm main formr with VirtualTree (named tree) placed on it
Code:

public partial class MyForm : Form
{
    private Column colName = new Column();
    private Column colValue = new Column();
    private MyObj RootObj;
    private MyUITypeEditor myUITypeEditor = new MyUITypeEditor();
    private CellEditor cellEditor = new CellEditor();
    private UniversalEditBox editBox = new UniversalEditBox();

    public MyForm()
    {
        InitializeComponent();

        // init tree
        colName.Caption = "Name";
        colValue.Caption = "Value";

        tree.Columns.Add(colName);
        tree.Columns.Add(colValue);

        cellEditor.Control = editBox;
       
        // init objects
        RootObj = new MyObj(null, "Root", "", false);
        RootObj.Children.Add(new MyObj(RootObj, "Child1", "A", false));
        RootObj.Children.Add(new MyObj(RootObj, "Child2", "AA", false));
        RootObj.Children.Add(new MyObj(RootObj, "Child3", "B", true));
        RootObj.Children.Add(new MyObj(RootObj, "Child4", "BB", true));
        tree.DataSource = RootObj;
    }

    private void tree_GetChildren(object sender, GetChildrenEventArgs e)
    {
        MyObj obj = (e.Row.Item as MyObj);
        if (obj != null) e.Children = obj.Children;
    }

    private void tree_GetParent(object sender, GetParentEventArgs e)
    {
        MyObj obj = (e.Item as MyObj);
        if (obj != null) e.Parent = obj.Parent;
    }

    private void tree_GetCellData(object sender, GetCellDataEventArgs e)
    {
        MyObj obj = (e.Row.Item as MyObj);
        if (obj != null)
        {
            if (e.Column == colName) e.CellData.Value = obj.Name;
            if (e.Column == colValue)
            {
                e.CellData.Value = obj.Value;
                e.CellData.TypeEditor = obj.UseCombo ? myUITypeEditor : null;
                e.CellData.Editor = cellEditor;
            }
        }
    }
}
Back to top
View user's profile Send private message
Infralution



Joined: 28 Feb 2005
Posts: 5027
PostPosted: Thu Jun 08, 2006 10:50 pm    Post subject: Reply with quote
If you can zip your sample project up and email it to support@infralution it will save us a bit of work and we will take a look at the issue. Just a thought - have you tried created separate Editors for each type of property and assigning these at the same time in GetCellData?
_________________
Infralution Support
Back to top
View user's profile Send private message Visit poster's website
Infralution



Joined: 28 Feb 2005
Posts: 5027
PostPosted: Fri Jun 09, 2006 2:04 pm    Post subject: Reply with quote
Thanks for the zipped project. I think the issue is related to the way the editor controls are cached and reused. This interacts with the way the UniversalEditBox handles when you set a null type editor. Anyway you can as I suggested in the last post fix the issue by simply creating a separate editor (and associated UniversalEditBox control) for each case eg

Code:
    public partial class MyForm : Form
    {
        private Column colName = new Column();
        private Column colValue = new Column();
        private MyObj RootObj;
        private MyUITypeEditor myUITypeEditor = new MyUITypeEditor();
        private CellEditor cellEditor = new CellEditor();
        private UniversalEditBox editBox = new UniversalEditBox();
        private CellEditor cellEditor2 = new CellEditor();
        private UniversalEditBox editBox2 = new UniversalEditBox();

        public MyForm()
        {
            InitializeComponent();

            // init tree
            colName.Caption = "Name";
            colValue.Caption = "Value";

            tree.Columns.Add(colName);
            tree.Columns.Add(colValue);

            cellEditor.Control = editBox;
            cellEditor2.Control = editBox2;
           
            // init objects
            RootObj = new MyObj(null, "Root", "", false);
            RootObj.Children.Add(new MyObj(RootObj, "Child1", "A", false));
            RootObj.Children.Add(new MyObj(RootObj, "Child2", "AA", false));
            RootObj.Children.Add(new MyObj(RootObj, "Child3", "B", true));
            RootObj.Children.Add(new MyObj(RootObj, "Child4", "BB", true));
            tree.DataSource = RootObj;
        }

        private void tree_GetChildren(object sender, GetChildrenEventArgs e)
        {
            MyObj obj = (e.Row.Item as MyObj);
            if (obj != null) e.Children = obj.Children;
        }

        private void tree_GetParent(object sender, GetParentEventArgs e)
        {
            MyObj obj = (e.Item as MyObj);
            if (obj != null) e.Parent = obj.Parent;
        }

        private void tree_GetCellData(object sender, GetCellDataEventArgs e)
        {
            MyObj obj = (e.Row.Item as MyObj);
            if (obj != null)
            {
                if (e.Column == colName) e.CellData.Value = obj.Name;
                if (e.Column == colValue)
                {
                    e.CellData.Value = obj.Value;
                    e.CellData.TypeEditor = obj.UseCombo ? myUITypeEditor : null;
                    e.CellData.Editor = obj.UseCombo ? cellEditor : cellEditor2; ;
                }
            }
        }
    }

_________________
Infralution Support
Back to top
View user's profile Send private message Visit poster's website
Mrdec



Joined: 04 May 2006
Posts: 7
PostPosted: Fri Jun 09, 2006 2:36 pm    Post subject: Reply with quote
Thanks a lot.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Infralution Support Forum Index -> Virtual Tree Support All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group