Re: [Lazarus] Treeview question
@Martin Collins, please see the issue: https://gitlab.com/freepascal.org/lazarus/lazarus/-/issues/39590 I guess Alexey started to implement TTreeNode.Enabled inspired by your post. I continued and I believe it is quite robust now. Please test. Regards, Juha -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Treeview question
TTreeNode.Enabled would be a useful addition. "Enabled" instead of "Disabled" for consistency with other components. There is TTreeNode.Visible. I believe much of its code logic could be copied and used for Enabled. Patches are welcome. Juha -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Treeview Question
On Tue, 30 Jun 2020 11:20:58 +0300 Juha Manninen via lazarus wrote: > On Tue, Jun 30, 2020 at 2:10 AM Martin via lazarus > wrote: > > In Lazarus there seems to be no disabled property for nodes, ... > > It could be implemented in TreeNode. > However property "Enabled" instead of "Disabled" would be more > consistent with other controls. Or you can write a descendant of TTreeView with your descendant of TTreeNode. Mattias -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Treeview Question
Thank you. I didn't particularly want to use QT in Lazarus but Pyside is QT only. I'll get my application up and working first I think and then maybe have a look at the treeview source for cosmetic tweaks. Writing my own wrapper for a QT widget set is beyond my capabilities but thank you anyway. Best regards, Martin On 30 June 2020 08:09:39 zeljko wrote: On 6/30/20 1:10 AM, Martin via lazarus wrote: Hi, I'm porting an application I started (but never finished) in Pyside to Lazarus. This question is only about cosmetics as Treeview works as I want it to. In Pyside I could set a space between nodes by setting the node text as "" and disabling that node so it never gets selection, e.g. self.tvSpace001 = QTreeWidgetItem(self.leftTreeWidget) self.tvSpace001.setText(0, "") self.tvSpace001.setDisabled(True) In Lazarus there seems to be no disabled property for nodes, so when transversing a node with text "" with the keyboard, it will move onto that empty node but not highlight it, when I would prefer it instead moved onto the next or previous node and highlight it. I could write a workaround, storing the last node index, working out if the user has moved up or down, checking if the text is "" and highlighting the previous or next node as required, BUT I just wondered if anyone has a more simple, more elegant solution please? It's only to show visual definition between groups of parents and childs and doesn't actually affect how the application works. Lazarus uses it's own implementation of TTreeView, so you have to create your own LCL wrapper for QTreeWidget. zeljko -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Treeview Question
On Tue, Jun 30, 2020 at 2:10 AM Martin via lazarus wrote: > In Lazarus there seems to be no disabled property for nodes, ... It could be implemented in TreeNode. However property "Enabled" instead of "Disabled" would be more consistent with other controls. Juha -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Treeview Question
On 6/30/20 1:10 AM, Martin via lazarus wrote: Hi, I'm porting an application I started (but never finished) in Pyside to Lazarus. This question is only about cosmetics as Treeview works as I want it to. In Pyside I could set a space between nodes by setting the node text as "" and disabling that node so it never gets selection, e.g. self.tvSpace001 = QTreeWidgetItem(self.leftTreeWidget) self.tvSpace001.setText(0, "") self.tvSpace001.setDisabled(True) In Lazarus there seems to be no disabled property for nodes, so when transversing a node with text "" with the keyboard, it will move onto that empty node but not highlight it, when I would prefer it instead moved onto the next or previous node and highlight it. I could write a workaround, storing the last node index, working out if the user has moved up or down, checking if the text is "" and highlighting the previous or next node as required, BUT I just wondered if anyone has a more simple, more elegant solution please? It's only to show visual definition between groups of parents and childs and doesn't actually affect how the application works. Lazarus uses it's own implementation of TTreeView, so you have to create your own LCL wrapper for QTreeWidget. zeljko -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
