Adding the Root Node to an extjs 4 MVC Tree Panel: A Step-by-Step Guide

I have a tree structure displaying all my tasks which are fetched from the database.

Now, I am looking to dynamically add a Root node. This means that when a user clicks the 'Add New Root Node' button, a new Root will be created in the Tree view panel.

Currently, I can create children of existing root nodes but not new parents.

In order to add a child to an existing root node, I use the following code:

 text: 'Add new Root Node',
                iconCls: 'icon-save',
                handler: function () {
                    var task = taskStore.getRootNode().findChild('Name', 'Parent 1');

                    if(task) {
                        task.insertChild(0, new taskStore.model({
                            Name: 'Added as first child!',
                            PercentDone: 60,
                            StartDate : new Date(2010, 0, 6),
                            EndDate : new Date(2010, 0, 8)
                        })
                        );
                    }
                }

While this works fine for adding children, what modifications do I need to make in order to successfully add a New Root Node?

Regards, Yogendra Singh

Answer №1

Having multiple roots is not allowed in this context. If needed, you can conceal the root node by toggling rootVisible to false, mimicking the desired behavior. Click here for a demonstration.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

What is the correct way to generate a normal map using THREE.js?

Experimenting with the Normal map Ninja demo, I attempted to apply it to a cube in my scene using the most recent version of Three.js from the development branch: // Setting up common material parameters var ambient = 0x050505, diffuse = 0x331100, specul ...

Tips for dynamically expanding the interface or type of an object in TypeScript

Currently, I am exploring the integration of PayPal's Glamorous CSS-in-JS library into a boilerplate project that also utilizes TypeScript. Glamorous provides a way to incorporate props into an element as shown below: const Section = glamorous.secti ...

Angular-template static functions refer to functions that do not require an

Our project utilizes the linting-config provided by AirBnB. There is a rule that stipulates class methods must utilize this or be declared as static. While this rule theoretically makes sense, it seems to present challenges within an angular context. Consi ...

What is the process for signing a Java Midlet?

Here's a question that may have a slightly complex solution: What is the process for signing a Java Midlet in order to upload it onto a mobile device with fewer security prompts? ...

Using Laravel to set cookies with Ajax

I am facing difficulties in setting cookies through laravel using ajax. Despite reading several questions and posts, I have not been able to find a solution. My issue involves a dropdown that triggers a javascript function to send its value to a controlle ...

jQuery enables the updating of field values while maintaining the cursor's position within the text

Currently, I am in the process of developing a jQuery plugin for a custom application of mine. One of the functionalities that I am working on involves slugifying a specific field. Below is the code snippet that I have implemented for this purpose: $site ...

What is a way to transfer an Object from one Vue.js component to another without relying on vuex?

Using vue-router in app.vue, I defined the two components as shown below: <div class='app'> <div class='nav'> <router-link to='/a'>to A component</router-link> <router-link to= ...

Iterate through an array index within a map function in a ReactJS component

I am working with a map that contains images of metros, and I need to increment the number by 1 at each loop iteration. For example, the first loop will display {metrosImages[0]}, then {metrosImages[1]}, and so on until the loop reaches its end. The code ...

Encountering an Issue: The program is throwing a TypeError because it is unable to access properties of null when trying to read '

My goal is to upload an excel file using ng-click and the fileUpload($event) function defined in the app controller scope. I am utilizing xlsx to read the file in JSON format, but I encounter an error when running the code: <div> <input id ...

An error occurred while trying to access the stored data at https://localhost:5000. The SSL protocol encountered

I am attempting to utilize an API to retrieve data and transfer it to MongoDB from my React application to the Node.js server, but I keep encountering an error message along with another issue in the console. https://i.stack.imgur.com/Bj4M6.png Despite e ...

Is it recommended to place the styles created by material-ui for child components after the styles generated for the parent component?

Utilizing material-ui, which utilizes JSS for styling a website. I have a component named Layout that applies margin to all its children (using the all children selector & > * in its style). This functionality works, but I would also like the child ...

Using PHP associative arrays as null values in JavaScript functions

On my PHP webpage, I have 6 textboxes arranged like this: <html> <script type="text/javascript"> function add() { //Issue with PHP associative array not transferring to JS array var array = JSON.par ...

Examine the syntax of JavaScript

I've been digging into a piece of code written by another person. My focus is on uncovering the JavaScript function that executes when the link below is clicked.... <a href="#subtabs_and_searchbar" id="finish_counting" onclick="$(' ...

Adjusting div position because of navigation bar elements above

I have implemented Bootstrap to create navigation tabs on my website. Currently, I have two navigation bars within a single div element. While they are functioning correctly, I am facing an issue where toggling through the tabs changes the height of the co ...

What is the best way to retrieve the initial element from a map containing certain data?

I am attempting to retrieve the first image path directory from an API that contains an Image so I can assign the value to the Image source and display the initial image. However, when using fl[0], all values are returned. Below is the code snippet: {useL ...

Unable to retrieve the value from an "input" element

Currently, I am utilizing Selenium with Java to create a test. My task involves retrieving the text from inside an input element: <table class="boundaryFormAdd"> <tbody> <tr> <td> <input id="id ...

What is the process for updating a jar file from jdk 1.4 to jdk 1.6?

I have a Java Archive (JAR) file called jse.jar that was originally built for JDK 1.4, which I obtained from to use in a search engine application. However, when attempting to incorporate it into my JDK 1.6 application, an error is thrown indicating that ...

What is the process for executing code on a server by clicking a button?

In my Next.js application, there is a file named dummy.js with the following content: class Dummy extends React.Component{ static async getInitialProps(ctx){ return { dummy : 'abc'}; } displayHelloWorld(params) { cons ...

Utilizing Next.js with formidable for efficient parsing of multipart/form-data

I've been working on developing a next.js application that is supposed to handle multipart/form-data and then process it to extract the name, address, and file data from an endpoint. Although I attempted to use Formidable library for parsing the form ...

Is the combination of variable arrays and regular expressions causing issues?

Currently, I am working on a script that transforms ::1:: into an image HTML for a div element. Here is the code: var smileys = { '1': 'http://domain.com/smiley1.gif', '2': 'http://domain.com/smiley2.gif', &a ...