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package dev.isxander.yacl.api;
import dev.isxander.yacl.impl.OptionImpl;
import net.minecraft.text.MutableText;
import net.minecraft.text.Text;
import org.apache.commons.lang3.Validate;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
public interface Option<T> {
/**
* Name of the option
*/
@NotNull Text name();
/**
* Tooltip (or description) of the option.
* Rendered on hover.
*/
@NotNull Text tooltip();
/**
* Widget provider for a type of option.
*
* @see dev.isxander.yacl.gui.controllers
*/
@NotNull Controller<T> controller();
/**
* Binding for the option.
* Controls setting, getting and default value.
*
* @see Binding
*/
@NotNull Binding<T> binding();
/**
* Checks if the pending value is not equal to the current set value
*/
boolean changed();
/**
* Value in the GUI, ready to set the actual bound value or be undone.
*/
@NotNull T pendingValue();
/**
* Sets the pending value
*/
void requestSet(T value);
/**
* Applies the pending value to the bound value.
* Cannot be undone.
*/
void applyValue();
/**
* Sets the pending value to the bound value.
*/
void forgetPendingValue();
/**
* Sets the pending value to the default bound value.
*/
void requestSetDefault();
/**
* Creates a builder to construct an {@link Option}
*
* @param <T> type of the option's value
* @param typeClass used to capture the type
*/
static <T> Builder<T> createBuilder(Class<T> typeClass) {
return new Builder<>();
}
class Builder<T> {
private Text name;
private final List<Text> tooltipLines = new ArrayList<>();
private Function<Option<T>, Controller<T>> controlGetter;
private Binding<T> binding;
private Builder() {
}
/**
* Sets the name to be used by the option.
*
* @see Option#name()
*/
public Builder<T> name(@NotNull Text name) {
Validate.notNull(name, "`name` cannot be null");
this.name = name;
return this;
}
/**
* Sets the tooltip to be used by the option.
* Can be invoked twice to append more lines.
* No need to wrap the text yourself, the gui does this itself.
*
* @param tooltips text lines - merged with a new-line on {@link Builder#build()}.
*/
public Builder<T> tooltip(@NotNull Text... tooltips) {
Validate.notEmpty(tooltips, "`tooltips` cannot be empty");
tooltipLines.addAll(List.of(tooltips));
return this;
}
/**
* Sets the controller for the option.
* This is how you interact and change the options.
*
* @see dev.isxander.yacl.gui.controllers
*/
public Builder<T> controller(@NotNull Function<Option<T>, Controller<T>> control) {
Validate.notNull(control, "`control` cannot be null");
this.controlGetter = control;
return this;
}
/**
* Sets the binding for the option.
* Used for default, getter and setter.
*
* @see Binding
*/
public Builder<T> binding(@NotNull Binding<T> binding) {
Validate.notNull(binding, "`binding` cannot be null");
this.binding = binding;
return this;
}
/**
* Sets the binding for the option.
* Shorthand of {@link Binding#generic(Object, Supplier, Consumer)}
*
* @param def default value of the option, used to reset
* @param getter should return the current value of the option
* @param setter should set the option to the supplied value
* @see Binding
*/
public Builder<T> binding(@NotNull T def, @NotNull Supplier<@NotNull T> getter, @NotNull Consumer<@NotNull T> setter) {
Validate.notNull(def, "`def` must not be null");
Validate.notNull(getter, "`getter` must not be null");
Validate.notNull(setter, "`setter` must not be null");
this.binding = Binding.generic(def, getter, setter);
return this;
}
public Option<T> build() {
Validate.notNull(name, "`name` must not be null when building `Option`");
Validate.notNull(controlGetter, "`control` must not be null when building `Option`");
Validate.notNull(binding, "`binding` must not be null when building `Option`");
MutableText concatenatedTooltip = Text.empty();
boolean first = true;
for (Text line : tooltipLines) {
if (!first) concatenatedTooltip.append("\n");
first = false;
concatenatedTooltip.append(line);
}
return new OptionImpl<>(name, concatenatedTooltip, controlGetter, binding);
}
}
}
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