class Opal::UI::Placeholder

Overview

Layout prototyping placeholder widget inspired by Python Textual's Placeholder. Renders an area-filling card with interior diagonal cross or pattern, centered title, and computed width x height dimensions badge.

Defined in:

opal/ui/components/placeholder.cr

Constructors

Instance Method Summary

Instance methods inherited from class Opal::UI::Element

add_class(name : String) : self add_class, children : Array(Element) children, classes : Set(String) classes, classes=(classes : Set(String)) classes=, has_class?(name : String) : Bool has_class?, id : String | Nil id, id=(id : String | Nil) id=, preferred_print_size(available_w : Int32) : Tuple(Int32, Int32) preferred_print_size, preferred_size(available_w : Int32, available_h : Int32) : Tuple(Int32, Int32) preferred_size, print(io : IO = STDOUT, width : Int32 | Nil = nil, color : Bool | Nil = nil, theme : Theme | Nil = nil) : Nil print, query(selector : String) : Array(Element)
query(klass : T.class) : Array(T) forall T query, query_one(selector : String) : Element
query_one(klass : T.class) : T forall T query_one, query_one?(selector : String) : Element | Nil
query_one?(klass : T.class) : T | Nil forall T query_one?, remove_class(name : String) : self remove_class, render(buffer : Buffer, x : Int32, y : Int32, width : Int32, height : Int32) : Nil render, render_print(buffer : Buffer, width : Int32, height : Int32) : Nil render_print, to_print_s(width : Int32 | Nil = nil, color : Bool | Nil = nil, theme : Theme | Nil = nil) : String to_print_s, to_string(width : Int32 | Nil = nil, color : Bool | Nil = nil, theme : Theme | Nil = nil) : String to_string

Instance methods inherited from module Opal::UI::Themable

current_theme : Theme current_theme, style(&block : self -> Nil) : self style, theme : Theme | Nil theme, theme=(theme : Theme | Nil) theme=, with_theme(new_theme : Theme | Symbol | String) : self with_theme

Constructor Detail

def self.new(label : String | Nil = nil, border : Symbol | Border = :rounded, border_fg : Color | Symbol | String = Color.none, text_fg : Color | Symbol | String = Color.none, bg : Color | Symbol | String = Color.none) #

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Instance Method Detail

def bg : Color | Nil #

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def bg=(bg : Color | Nil) #

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def border : Border #

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def border=(border : Border) #

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def border_fg : Color | Nil #

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def border_fg=(border_fg : Color | Nil) #

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def fill_char : Char #

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def fill_char=(fill_char : Char) #

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def label : String | Nil #

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def label=(label : String | Nil) #

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def preferred_size(available_w : Int32, available_h : Int32) : Tuple(Int32, Int32) #

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def render(buffer : Buffer, x : Int32, y : Int32, width : Int32, height : Int32) : Nil #

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def text_fg : Color | Nil #

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def text_fg=(text_fg : Color | Nil) #

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