Liquid Charts API Docs
Liquid Charts Pro Scripts Documentation
Liquid Charts Pro Scripts Documentation
  • Liquid Charts Pro User-Defined Indicators
    • Introduction
      • 1.1 Access to the Liquid Charts scripting framework (UDI vs UDIX)
      • 1.2 Example UDI code
      • 1.3 Adding a UDI to a chart
      • 1.4 Lifecycle
      • 1.5 Alerts
      • 1.6 Indicator-on-indicator
      • 1.7 Technical note: web workers
      • 1.8 Technical note: dates
    • Initialisation: UDI.onInit()
      • 2.1 Return value from UDI.onInit()
      • 2.2 The plots[] array
      • 2.3 The settingsFields[] array
      • 2.4 Context data passed to UDI.onInit()
    • Calculating data: UDI.onCalculate()
      • 3.1 Reading settings fields
      • 3.2 Input data for the UDI
      • 3.3 Updates of the current bar only
      • 3.4 Calculating output data
      • 3.5 Requesting out-of-band updates
      • 3.6 Technical analysis: moving averages, ATR etc
    • Changes to the chart or parameters
      • 4.1 UDI.onContextChange()
      • 4.2 UDI.onParameterChange()
    • Creating drawings, event markers, and bar highlights
      • 5.1 Creating drawings
      • 5.1.1 Drawing properties
      • 5.2 Creating event markers
      • 5.2.1 Click notifications from event markers
      • 5.3 Creating bar highlights
    • Notifying the user
      • 6.1 Creating toast
      • 6.2 Changing the panel background colour
    • Adding HTML to the chart
      • 7.1 Adding HTML
      • 7.2 Positioning the HTML
      • 7.3 Sending messages from the HTML to the UDI
      • 7.4 Sending messages from the UDI to the HTML
    • Recommended trade
      • 8.0 Recommended trade
    • Other indicator topics
      • 9.1 Collecting external data
      • 9.2 Converting dates to chart time
      • 9.3 Multi-timeframe (MTF) indicators
  • Liquid Charts Pro Framework
    • Examples
    • Collections, objects, and properties in the framework
    • Functions in the framework
    • Messages and event handlers
    • Working with candle data
    • Widget HTML and CSS reference
    • Liquid.utils and other helper functions
    • Framework error codes
    • Script contexts
    • Sending mail into Liquid Charts Pro from outside the platform
    • language variables
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  1. Liquid Charts Pro User-Defined Indicators

Adding HTML to the chart

Your UDI can add HTML to its chart, either just as decoration or to provide additional functionality. This mechanism is very flexible, but it can become complicated if you want the UDI to interact with the HTML.

The HTML is added to the chart in a sandboxed iframe. It has no access to the rest of the web page, and it has no direct access to any framework or indicator features. However, the HTML can send messages to the UDI, and the UDI can send messages to the HTML. Therefore, for example, the HTML can have something like a button which sends a message to the UDI, and the UDI then carries out some action. Similarly, the HTML can have input fields. You can post a message to the UDI containing the value of the fields, and then use this data in the UDI to change its behaviour.

To display only HTML, with no standard indicator drawing, you simply return an empty plots[] array in your initialisation.

Previous6.2 Changing the panel background colourNext7.1 Adding HTML

Last updated 3 months ago