Bar

This is an abstract class that defines the pure virtual methods a concrete bar must implement.

Details

This class cannot be instantiated. It needs to be extended by concrete subclasses that implement the pure virtual methods. Instances of concrete backend implementations can be conveniently obtained using the BarFactory class.

See also

BasicBar, ModernBar, and BarFactory.

Active bindings

engine

The bar engine.

Methods

Public methods

• Bar$new()

• Bar$create()

• Bar$update()

• Bar$terminate()

• Bar$clone()

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Method new()

Create a new Bar object.

Usage

Bar$new()

Returns

Instantiating this class will throw an error.

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Method create()

Create a progress bar.

Usage

Bar$create(total, initial, ...)

Arguments

total

The total number of times the progress bar should tick.

initial

The starting point of the progress bar.

...

Additional arguments for the bar creation. See the Details section for more information.

Details

The optional ... named arguments depend on the specific concrete implementation (i.e., BasicBar or ModernBar).

Returns

This method returns void. The resulting bar is stored in the private field .bar, accessible via the active binding engine.

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Method update()

Update the progress bar.

Usage

Bar$update(current)

Arguments

current

The position the progress bar should be at (e.g., 30 out of 100), usually the index in a loop.

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Method terminate()

Terminate the progress bar.

Usage

Bar$terminate()

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Method clone()

The objects of this class are cloneable with this method.

Usage

Bar$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.