I am using tree panel is ExtJS.
Consider the above image as the tree panel. If user selects node 1.1.1.2, I should check if all its sibling are also checked/selected, if yes, system should select 1.1.1 node and deselect 1.1.1.1, 1.1.1.2, 1.1.1.3 nodes.
Similarly, At this point I should check the siblings of 1.1.1 node (1.1.2 & 1.1.3) & if they previously selected/checked, then I should deselect 1.1.1, 1.1.2, 1.1.3 and I should select 1.1 node.
This kind of check continues until I reach root node or one the siblings of selected node is not checked/selected.
What is the best way to achieve this. When I say best way, I am looking for some in-build property or method which will help me achieve this.
Thank you
I would start with the bubble method:
http://docs.sencha.com/extjs/4.1.1/#!/api/Ext.data.NodeInterface-method-bubble
Related
We are trying to show the tree structure in the combo box using the following source
https://fiddle.sencha.com/#fiddle/g50&view/editor
We are able to view the tree structure in the combo box however when we select any node its not being displayed in the combo box.
There is a treepicker component available in ExtJS 4 and ExtJS 6. From the fiddle you have provided, I can see that you use ExtJS version 5, but I could not find any reference to the treepicker in the API Docs for this version. You can sneak peek into the version 4 and 6 implementation.
But basically, you just missed setting an event listener on the tree panel picker that will update the value of the field: https://fiddle.sencha.com/#fiddle/2qt0&view/editor
On my treegrid when I expanded tree node if there is not data available(and if I added data into database later) I can't expand this node again. need to refresh page. how can I set it expandable? or how force treegrid node to send request again on expand?
If I understand your question, all you have to do is update node (expanded) data. This can be done as follows:
this.getStore('MyTreeStore').load({ node: someNode});
In ExtJs 4.0 Tree Panel the folders always appears first and then the leaf nodes.
Check the this link or below image to see how folder appears first and then the leaf node.
Is there any way to show the folders and leaf node order by name, instead of showing folders first. Or is there way to set some property for each folder and leaf node and then sort based on this property.
The configuration option which results in the sort behavior of the example you are referring to is folderSort. However, by default it is set to false, so you should not need to configure anything for your desired sort order.
I am using ExtJs 4.1 TreePanel control & want to disable selection of a node if that node is not a leaf node. Do we have any property out of the box to achieve this?
So If the node is not a leaf node, disable selection and if user click on that node, system should not fire any event (itemClick or select etc).
Thank you
There's no property, but you could always key on the beforeitemclick or beforeselect event (or both, depending on what you need to do). Add a handler for this event, check if the clicked node is a leaf, and if it's not, simply return false. That will halt the default behavior and effectively disable the non-leaf nodes.
http://docs.sencha.com/extjs/4.2.2/#!/api/Ext.tree.Panel-event-beforeselect
I have two treepanels which I want to drag and drop between. I understand there is a plugin for this, however I want it to behave a certain way.
In my treepanels, I am showing the root node of the tree, and then all its children. The default DD allows the user to drop items at different levels on the tree(i.e. sibling of root, child of root) where I want all items to be a child of root for consistency. How can I make it so that any drag into the treepanel associates the item as a child of the root and not a sibling of the root.
Why:
For a user who doesn't understand how this functionality works, one millimeter in either direction can change the item from being a sibling to child or vice versa.
Also, I would like it so I can only drag away those children and the root can't be moved, if at all possible.
Yes it is possible. You can listen to the 'beforedrop' event on the target Tree panel's tree view and achieve what you want. Something like this
http://jsfiddle.net/EYtnk/1/ ..
One of the arguments of the beforedrop event is the node being dragged. You can check if it is a root node of source tree and just 'return false;'
P.S: In the example, i just used the same store for both the trees.. so the nodes get added on either side.