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Learning Pentaho CTools

You're reading from   Learning Pentaho CTools Acquire finesse with CTools features and build rich and custom analytics solutions using Pentaho

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Product type Paperback
Published in May 2016
Publisher Packt
ISBN-13 9781785283420
Length 388 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Miguel Gaspar Miguel Gaspar
Author Profile Icon Miguel Gaspar
Miguel Gaspar
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Toc

Table of Contents (12) Chapters Close

Preface 1. Getting Started with CTools FREE CHAPTER 2. Acquiring Data with CDA 3. Building the Dashboard Using CDF 4. Leverage the Process with CDE 5. Applying Filters to the Dashboard 6. Tables, Templates, Exports, and Text Components 7. Advanced Concepts Using CDF and CDE 8. Visualizations Using CCC 9. Pentaho App Builder 10. Embed, Deploy, and Debug Index

Handling the click event


One important thing about charts is that they allow interaction. CCC provides a way to handle some events in the chart and click is one of those events. To have it working, we need to change two properties: clickable, which needs to be set to true, and clickAction where we need to write a function with the code to be executed when a click happens. The function receives one argument that usually is referred to as a scene. The scene is an object that has a lot of information about the context where the event happened. From the object you will have access to vars, another object where we can find the series and the categories where the click happened.

We can use the function to get the series/categories being clicked and perform a fireChange that can trigger updates on other components:

function(scene) {
    var series =  "Series:"+scene.atoms.series.label;
    var category =  "Category:"+scene.vars.category.label;
    var value = "Value:"+scene.vars.value.label;
   ...
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