I want to add the <nuxeo-tree> component to my Polymer v1 app, but I'm seeing an error in the console. This is the code I've tried:
<link rel="import" href="../bower_components/polymer/polymer.html">
<link rel="import" href="../bower_components/nuxeo-ui-elements/nuxeo-tree/nuxeo-tree.html">
<link rel="import" href="./myVerySpecialLib-import.html">
<dom-module id="my-app">
<template>
tree:<br/>
<nuxeo-tree data="[ title: 'root', children: [ { title: 'a', children: [] }, { title: 'b', children: [ {title: 'x'}, {title: 'y'} ] } ]]]" controller="[[controller]">
<template>
<template is="dom-if" if="[[!opened]]">
<iron-icon icon="hardware:keyboard-arrow-right" toggle></iron-icon>
</template>
<template is="dom-if" if="[[opened]]">
<iron-icon icon="hardware:keyboard-arrow-down" toggle></iron-icon>
</template>
<span select>My title is: [[item.title]]</span>
<span>Am I a leaf? [[isLeaf]]</span>
</template>
</nuxeo-tree>
</template>
<script>
Polymer({
is: 'my-app',
properties: {
data: {
type: String,
value: "[ title: 'root', children: [{ title: 'a',children: []},{title: 'b',children: [{title: 'x'},{title: 'y'}]}]]",
},
opened: {
type: Boolean,
value: true,
},
},
controller: {
// How to get children of a node. Returns a promise.
getChildren: function(node) {
return Promise.resolve(node.children);
},
// Logics you may want to have to control if a node is a leaf.
isLeaf: function(node) {
return node.children.length === 0;
}
},
});
</script>
</dom-module>
And the myVerySpecialLib-import.html file:
controller = {
// How to get children of a node. Returns a promise.
getChildren: function(node) {
return Promise.resolve(node.children);
},
// Logics you may want to have to control if a node is a leaf.
isLeaf: function(node) {
return node.children.length === 0;
}
};
This is the console error:
TypeError: this.controller.isLeaf is not a function
I tried to add the JSON data as a property and also directly into the data field, but neither had a positive effect. How do I fix this?
The myVerySpecialLib-import.html seems to contain a global variable declaration, but that doesn't really help you because <nuxeo-tree> expects controller on the container element (not in a global variable).
Also, your data binding for <nuxeo-tree>.controller is malformed (it's missing a ] at the end):
<nuxeo-tree controller="[[controller]">
And controller probably should be declared as a property if you're binding it. It's currently declared outside the properties object.
// DON'T DO THIS
/*
properties: {...},
controller: {...}
*/
// DO THIS
properties: {
controller: {...}
}
I recommend setting this.controller in the ready() callback of the parent element of <nuxeo-tree> (where this is the container). You could also set <nuxeo-tree>.data via a binding to simplify your HTML template, and that property could be initialized in ready() as well.
ready: function() {
this.data = /* insert data object here */;
this.controller = /* insert controller object here */;
}