How to get the title of immediate parent of child node in jsTree.
I have tried the following code, but its giving me the html li element and I want the title of parent element.
var parent = data.inst._get_parent(data.rslt.obj);
Please help
Use parents in jQuery to get all parents, filtering out by li because all tree items are li in jstree, try this:
var parents = data.rslt.obj.parents("li");
And for children use children in jQuery, like so:
var children = data.rslt.obj.parent().find('li');
jsTree : How to get IDs of selected nodes to root node in jsTree?
.bind("select_node.jstree", function (e, data) {
var parent=data.inst._get_parent(data.rslt.obj);
alert(parent.find('a').first().text());
});
Note that you have to use ui plugin to use ._get_parent function
Working jsfiddle
Related
I'm trying to implement the FLIP animation technique. I have to access the getBoundingClientRect() of react's element children.
let ref = React.useRef(Js.Nullable.null);
<div ref={ReactDOMRe.Ref.domRef(ref)}>
{Belt.List.map(items, item => {
// ...
})}
</div>
I'm accessing ref content in this way:
let elMaybe = ref->React.Ref.current->Js.Nullable.toOption;
then children of DOM element:
let children = el->ReactDOMRe.domElementToObj##children;
I have a problem with the children. If i use Js.log(children), I see in dev console proper list of children. But List.length(children) always returns 2.
This code:
Belt.List.map(children, child => {
Js.log(child)
});
logs only the first child and undefined.
How should I iterate those children? Is there any better way to debug contents of object than Js.log?
children is not a list, it's an array. You won't ever get lists from JavaScript, because it doesn't exist as a concept there.
Just use Array.length and Belt.Array.map instead, then you should be good.
See the Reason documentation on List & Array for more details.
As an example, I have a Master\Detail grid.
Master\Detail defined as key-relation model and on getDetailRowData method parent node data exists in params
but how to get parent node data from child view?
Tried via context-menu:
On right click - getContextMenuItems got executed which has an input params
On this sample, child-grid doesn't have any row and node in context-params is null, it's ok,
but anyway it should be possible to retrieve the parent details at least via grid API, isn't it ?
Then I've tried to get parent via node:
but instead of detail_173 as you can see its ROOT_NODE_ID, and here is a confusion for me.
So question is that how to get parent node data (RecordID 173 just in case) through child-view context menu or any other possible way (without storing temp value, cuz multiple children's could be opened at the same time)
Yes, I've read this part Accessing Detail Grid API, and still unclear how to get parent-node via child-grid.
For React Hook users without access to lifecycle methods, use Ag-Grid Context to pass the parent node (or parent data) to the detail grid via detailGridOptions. No need to traverse the DOM or use a detailCellRenderer unless you want to :)
https://www.ag-grid.com/javascript-grid-context/
detailCellRendererParams: (masterGridParams) => ({
detailGridOptions: {
...
context: {
masterGrid: {
node: masterGridParams.node.parent,
data: masterGridParams.data
}
},
onCellClicked: detailGridParams => {
console.log(detailGridParams.context.masterGrid.node);
console.log(detailGridParams.context.masterGrid.data);
}
}
})
Able to achieve it. Have a look at the plunk I've created: Get master record from child record - Editing Cells with Master / Detail
Right click on any child grid's cell, and check the console log. You'll be able to see parent record in the log for the child record on which you've click.
The implementation is somewhat tricky. We need to traverse the DOM inside our component code. Luckily ag-grid has provided us the access of it.
Get the child grid's wrapper HTML node from the params - Here in the code, I get it as the 6th element of the gridOptionsWrapper.layoutElements array.
Get it's 3rd level parent element - which is the actual row of the parent. Get it's row-id.
Use it to get the row of the parent grid using parent grid's gridApi.
getContextMenuItems: (params): void => {
var masterId = params.node.gridOptionsWrapper.layoutElements[6]
.parentElement.parentElement.parentElement.getAttribute('row-id');
// get the parent's id
var id = masterId.replace( /^\D+/g, '');
console.log(id);
var masterRecord = this.gridApi.getRowNode(id).data;
console.log(masterRecord);
},
defaultColDef: { editable: true },
onFirstDataRendered(params) {
params.api.sizeColumnsToFit();
}
Note: Master grid's rowIds are defined with [getRowNodeId]="getRowNodeId" assuming that account is the primary key of the parent grid.
A very reliable solution is to create your own detailCellRenderer.
on the init method:
this.masterNode = params.node.parent;
when creating the detail grid:
detailGridOptions = {
...
onCellClicked: params => console.log(this.masterNode.data)
}
Here is a plunker demonstrating this:
https://next.plnkr.co/edit/8EIHpxQnlxsqe7EO
I struggled a lot in finding a solution to this problem without creating custom details renderer but I could not find any viable solution. So the real good solution is already answered. I am just trying to share another way to avoid creating custom renderer.
So What I did is that I changed the details data on the fly and added the field I required from the parent.
getDetailRowData: function (params: any) {
params?.data?.children?.forEach((child:any) => {
//You can assign any other parameter.
child.parentId= params?.data?.id;
});
params.successCallback(params?.data?.children);
}
When you expand the row to render details the method getDetailRowData gets called, so it takes in params as the current row for which we are expanding the details and the details table is set by invoking params.successCallback. So before setting the row data I am iterating and updating the parentId.
I'm trying to prevent the dragging and dropping of nodes outside of the parent node ("LLCA") with no luck.
Any suggestions?
Image of Treeview
I ended up getting it to work using your code below:
function onDrop(e) {
var dst = e.destinationNode;
var first = $('.k-item:first');
var pos = e.dropPosition;
if (dst && dst.uid === first.uid && pos !== "over") {
e.setValid(false);
}
}
Lets define the treeview:
var tree = $("#tree").kendoTreeView({
dataSource :content,
dragAndDrop:true
}).data("kendoTreeView");
What I'm going to do is add a drop callback where I will control that:
We are not dropping outside the tree
We are not dropping before or after the first node of the tree
The definition of the tree would be:
var tree = $("#tree").kendoTreeView({
dataSource :content,
dragAndDrop:true,
drop :function (ev) {
var dst = tree.dataItem(ev.destinationNode);
var first = tree.dataItem(".k-item:first");
var pos = ev.dropPosition;
if (dst && dst.uid === first.uid && pos !== "over") {
console.log("invalid");
ev.setValid(false);
}
}
}).data("kendoTreeView");
Check http://docs.kendoui.com/api/web/treeview#drop for information on drop event.
Because I cannot comment on an answer, I will write my own.
User Mithrilhall asked about MVC wrappers, also the top answer only prevents movement to the root node.
I will attempt to answer both Mithrilhall and provide an example where you can only move a child within the context of its parent. To put it another way, to only allow children of any parent to change their order within the parent.
Firstly, for MithrilHall, this is how you get to the events in MVC.
#(Html.Kendo().TreeView()
.Name("ourTreeView")
.Events(e => e.Drop("treeViewDrop"))
There are other events in treeview, you can take a gander for yourself. The argument is the name of a javascript function. Here is an example javascript function for this MVC wrapper to prevent children from moving outside of their parent, but allowing them to still move within the parent.
<script type="text/javascript">
function treeViewDrop(dropEvent) {
var treeView = $("#ourTreeView").data("kendoTreeView");
var destination = treeView.dataItem(dropEvent.destinationNode);
var source = treeView.dataItem(dropEvent.sourceNode);
if (!(destination && destination.parentID == source.parentID)) {
dropEvent.setValid(false);
}
}
</script>
I had a parentID field modeled in my datasource. You could accomplish this in many ways. The dataItem method returns a kendo treeview item, so it has all of your modeled fields in it.
Also understand, this solution does not change the widget to show an X when you are moving to a place you cannot drop to. This is another problem with another solution.
I hope this helps, good luck!
I am having difficulties by selecting child nodes when parent is also selected , also would like to open subfolders and select all childs (not sure if im making it clear) so I have know how to get all the child nodes by:
selected_nodes = $("#demo").jstree("get_selected", null, true);
var tree = jQuery.jstree._reference('#demo');
var children = tree._get_children(selected_nodes);
but doest really select or open child folder and nodes
This might not be what OP wanted but on JSTree 3.3. I used this to open all nodes under a selected parent.
$(treeContainer).bind("select_node.jstree", function (e, data) {
return data.instance.open_all(data.node);
});
I gave up on this Idea.. now im just doing ajax requests to load the childs and receive a json object, and from there i can see if its a file or directory, if its a directory again another request and like this i have the whole structure
You have to turn on two_state checkboxes to allow parent and child nodes to be selected indepentently. Below I've configured the "two_state" parameter for the checkbox plugin:
$("#docTree").jstree({
"themes": {
"theme": "classic",
"url": "jstree/themes/classic/style.css"
},
"plugins": ["themes", "ui", "checkbox", "json_data"],
"checkbox": { "two_state" : true }
})
Check documentation here: http://www.jstree.com/documentation/checkbox
If I understand this correctly you want to select all of the lowest descendants in a jsTree (the files) when one of their parents (the folders) have been selected.
Unfortunately I haven't found a more direct approach than the one below. I'm using jsTree 3.1.1 and managed to solve this problem using the following:
var $demo = $("#demo");
var nodes = $demo.jstree("get_top_selected", true);
//Selects all of the children of each selected node including folders
if(nodes.length > 0){
nodes.forEach(function(node, i){
$demo.jstree("select_node", node.children_d, true, false);
});
}
var fileNodes = $demo.jstree("get_bottom_selected", false);
//We now need to deselect everything and only select the file nodes
$demo.jstree("deselect_all", true);
$demo.jstree("select_node", fileNodes, true, false);
The above code allows the user to "select" multiple folders and have those files selected.
The parameter with the value true for the "get_top_selected" function returns the full node instead of just ID's. This lets you get access to the node's children.
Function "select_node" takes three parameters. The first is the nodes to select (in this case the descendants of the current parent node). If the second parameter is set to true it prevents the changed.jstree event from firing for each selected node. The third parameter is set to false as setting to true prevents the children folders from opening.
The function "get_bottom_selected" only returns a node if it has both been selected and it itself does not have any children. As we are now only interested in the node ID's we can pass the parameter false (or omit it completely).
Passing a parameter of true to the function "deselect_all" again prevents the changed.jstree event from firing.
If you want to check out the jsTree API docs you can find them here. That list is filtered to only include the select functions and events. A full list of the API can be found here.
I hope this helps but let me know if you require further clarification on any of the code ^_^
select all child nodes when parent selected ,
$(data.rslt.obj).find("li").each( function( idx, listItem ) {
var child = $(listItem); // child object
$.jstree._reference("#associateRightHandTree").check_node(child);
});
unselect all child nodes when parent unselected ,
$(data.rslt.obj).find("li").each( function( idx, listItem ) {
var child = $(listItem); // child object
$.jstree._reference("#associateRightHandTree").uncheck_node(child);
});
I have a page which contains several divs (each with a unique ID and the same class, 'parent'). Underneath each "parent" div, is a div with class "child" and unique ID name -child. This DIV is upon page load empty.
Whenever you click on a parent DIV, the following code is executed.
$$('div.parent').each(function(s){
$(s).observe('click', function(event){
event.stop();
var filer = $(s).readAttribute('filer');
var currentElement = $(s).id;
var childElement = currentElement + '-children';
new Ajax.Updater ({success: childElement}, root + '/filers/interfacechildren', {
parameters: {parentId: currentElement, filer: filer}
});
});
});
Of course, it's possible that a child node is again a parent ont its own. The response looks like this (Smarty with Zend Framework):
{foreach from=$ifaces item=interface}
<div id="{$interface->name}" filer="{$interface->system_id}" class="parent">{$interface->name}</div>
<div id="{$interface->name}-children" class="child"></div>
{/foreach}
Whenever I click on a "parent" div that is loaded inside a child, nothing happens :( Any suggestions / fixes how to fix this?
Move event.stop() after the Ajax.Updater?
Fixed.
I put the code inside a function, and made it recurse itself onSuccess. That way, when the new parents are loaded with AJAX, the observer function takes into account the new created divs.