Key Listener (ref)

(part of package 'Key Listener')

You can access it in code via: plugins.keyListener

A Servoy Extra Component that handles keyboard events and provides key listener functionality.

Properties

API

addKeyListener(callbackKey,callback,clearCB,delay,regexPattern,regexReplacement)

Registers the listener on the components which have the "keylistener" attribute with the given callbackKey value, to call the given callback when a key is pressed.

Example:

plugins.keyListener.addKeyListener('test', onKey)

Parameters:

• {String} callbackKey The key for which the listener will be added. This key has to match value of "keylistener" attribute in component.

• {Function} callback The callback function to be called when a key is pressed.

• {Boolean} [clearCB] If true a removeKeyListener will be called for this key before adding the new one. Default value is false.

• {Number} [delay] Number of milliseconds to wait before callback method is called. Default value is 1000.

• {String} [regexPattern] Javascript regular expression string to modify current value of the component.

• {String} [regexReplacement] The value that is used to replace the regular expression with in the current value of the component.

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removeKeyListener(callbackKey)

Removes the listener associated to the given callback key. Returns true if the listener was removed.

Example:

plugins.keyListener.removeKeyListener('test')

Parameters:

• {String} callbackKey The key listener to remove.

Returns: Boolean Succes of removal

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Types

callback

Represents a key listener callback configuration. scripting type: CustomType<keyListener.callback>

• callback

  • The callback function that will be executed when the key event occurs.

  • Type: function
• callbackKey

  • The key identifier for the callback. This should match the "keylistener" attribute value in the component.

  • Type: string

• delay

  • The delay in milliseconds before the callback is executed after the key event.

  • Type: int

• isRunning

  • Indicates whether the callback is currently running.

  • Type: int

• regexPattern

  • A JavaScript regular expression string used to modify the current value of the component.

  • Type: string

• regexReplacement

  • The string used to replace the parts of the component's value that match the regexPattern.

  • Type: string

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