Hi,

I'm trying to create a "collapse node" option that will hide all rows from a specific table when the user clicks on an image next to caption.

I am wondering if there is an EventHandler when the user clicks on the image or if I need to create a ShapeNode button and handle clicks on it using diagram.NodeClicked event handler?

Also, if I need to use the 2nd technique, how do I know which table this collapseButton is linked to?

Thanks,
Marie

Hi,

I'm not using custom drawing (not yet ). It doesn't really matter to me what code I'm using. For now, I have the following to add the image to the table (comes from Entities exemple):

Group btnsGroup = diagram.Factory.CreateGroup(t);
ShapeNode collapseBtn = new ShapeNode(diagram);
collapseBtn.Transparent = true;
collapseBtn.Image = Properties.Resources.CollapseNode;
collapseBtn.ImageAlign = ImageAlign.TopLeft;
btnsGroup.AttachToCorner(collapseBtn, 0);
collapseBtn.Locked = true;
this.diagram.Nodes.Add(collapseBtn);
collapseBtn.Tag = "Collapse"; 

However, when I use the EventHandler diagram.NodeClicked, it doesn't get called for my shape nodes, only for the table. How do I know if the user clicked the ShapeNode and not somewhere else in the table?

Thanks,
Marie

Hi,

Yes it does. Thanks. I was using the standalone Entity example.

Regards,
Marie

Hi,

I have added a NodeClicked handler to the Entities sample and this works fine:

private void diagram_NodeClicked(object sender, NodeEventArgs e)
{
	ShapeNode shape = e.Node as ShapeNode;
	if (shape != null)
		MessageBox.Show("shape clicked");

	TableNode table = e.Node as TableNode;
	if (table != null)
		MessageBox.Show("table clicked");
}
 

I hope that helps,
Stoyan

Hi,

Another question related to that:
I added a shapeNode using the following:

ShapeNode btn = diagram.Factory.CreateShapeNode(x, y, image.Width, image.Height);
btn.Transparent = true;
btn.Image = image;
btn.ImageAlign = ImageAlign.Center;
btn.AttachTo(node, attType);
btn.Locked = true;
btn.Tag = tag; 

How do I remove that btn after? I tried to detach it, but that just removes it from the parent. How do I tell the diagram that this is deprecated?

Edit: Anything else needed other than diagram.Nodes.remove(btn) ? I want it to be a clean deletion...

Thanks,
Marie

Hi Stoyan,

I have another question. How can I get the selected cell in a tableNode?

Thanks,
Marie

Hi Stoyan,

Thanks. If I decide to change the cell color, how do I know when to change it back to its original color when it lost selection? I don't find any CellUnclicked (!) event... Do I need to reset the last selected cell color in all other "click" events (Clicked, LinkClicked, NodeClicked, etc.)?

Thanks,
Marie