CODEWITHSUNDEEP
jstree
David Hammond
David Hammond

Reputation: 3306

How can I suppress cascade on the initial load of jsTree?

I'm using jsTree with the checkbox plugin. I have the cascade set to "down". This works great, except that when I want to load data with a mixture of checked and unchecked nodes, the cascade overrides the "state" setting for nodes. E.g.

var data = [
    {"id":"p90","parent":"#","text":"Page1", "state": { "selected": true} },
    {"id":"p100","parent":"p90","text":"Page2", "state": { "selected": true} },
    {"id":"p101","parent":"p100","text":"Page3", "state": { "selected": false} },
    {"id":"p102","parent":"p101","text":"Page4", "state": { "selected": true} },
    {"id":"p103","parent":"p101","text":"Page5", "state": { "selected": false} }
];

$(function () {
    $("#PageTree")
        .jstree({
            core: { data: data },
            plugins: ["checkbox"],
            checkbox: { cascade: "down", three_state: false },
            expand_selected_onload: true
        });
});

This results in this:

all checked

But it should look like this:

some checked

I tried setting the "cascade" setting after the tree is loaded, but that didn't work. It seems like the only option will be to write my own cascade code, but I'm looking for a slicker option.

Upvotes: 15

Views: 5821

Answers (2)

TomLorenzi
TomLorenzi

Reputation: 14

Here's my solution, if you instancied cascade like this, this should use the native cascade function after init and won't make any performance problems.

$tree.on('init.jstree', function(e, data) {
    data.instance.settings.checkbox.cascade = '';
}).jstree({
    core: {
        multiple: true,
        check_callback: true,
        data: {'Your own data'},
    },
    checkbox: {
        three_state: false,
        cascade: 'down'
    },
    plugins: [your own list]
}).on('loaded.jstree', function() {
    $tree.jstree(true).settings.checkbox.cascade = 'down';
})

Upvotes: -1

David Hammond
David Hammond

Reputation: 3306

This is what I ended up doing, which is the solution recommended by the developer of jsTree (https://github.com/vakata/jstree/issues/774):

$("#PageTree")
    .on('select_node.jstree', function (e, data) {
        if (data.event) {
            data.instance.select_node(data.node.children_d);
        }
    })
    .on('deselect_node.jstree', function (e, data) {
        if (data.event) {
            data.instance.deselect_node(data.node.children_d);
        }
    })
    .jstree({
        core: { data: pages },
        plugins: ["checkbox"],
        checkbox: { cascade: "", three_state: false },
        expand_selected_onload: true
    });

Upvotes: 17

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