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StyleImpl.java
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StyleImpl.java
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/*
* This file is part of adventure, licensed under the MIT License.
*
* Copyright (c) 2017-2022 KyoriPowered
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.kyori.adventure.text.format;
import java.util.EnumMap;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.stream.Stream;
import net.kyori.adventure.internal.Internals;
import net.kyori.adventure.key.Key;
import net.kyori.adventure.text.event.ClickEvent;
import net.kyori.adventure.text.event.HoverEvent;
import net.kyori.adventure.text.event.HoverEventSource;
import net.kyori.examination.ExaminableProperty;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import static java.util.Objects.requireNonNull;
final class StyleImpl implements Style {
static final StyleImpl EMPTY = new StyleImpl(null, null, DecorationMap.EMPTY, null, null, null);
// visible to avoid generating accessors when creating a builder
final @Nullable Key font;
final @Nullable TextColor color;
final @NotNull DecorationMap decorations;
final @Nullable ClickEvent clickEvent;
final @Nullable HoverEvent<?> hoverEvent;
final @Nullable String insertion;
StyleImpl(
final @Nullable Key font,
final @Nullable TextColor color,
final @NotNull Map<TextDecoration, TextDecoration.State> decorations,
final @Nullable ClickEvent clickEvent,
final @Nullable HoverEvent<?> hoverEvent,
final @Nullable String insertion
) {
this.font = font;
this.color = color;
this.decorations = DecorationMap.fromMap(decorations);
this.clickEvent = clickEvent;
this.hoverEvent = hoverEvent;
this.insertion = insertion;
}
@Override
public @Nullable Key font() {
return this.font;
}
@Override
public @NotNull Style font(final @Nullable Key font) {
if (Objects.equals(this.font, font)) return this;
return new StyleImpl(font, this.color, this.decorations, this.clickEvent, this.hoverEvent, this.insertion);
}
@Override
public @Nullable TextColor color() {
return this.color;
}
@Override
public @NotNull Style color(final @Nullable TextColor color) {
if (Objects.equals(this.color, color)) return this;
return new StyleImpl(this.font, color, this.decorations, this.clickEvent, this.hoverEvent, this.insertion);
}
@Override
public @NotNull Style colorIfAbsent(final @Nullable TextColor color) {
if (this.color == null) {
return this.color(color);
}
return this;
}
@Override
public TextDecoration.@NotNull State decoration(final @NotNull TextDecoration decoration) {
// null -> null
final TextDecoration.@Nullable State state = this.decorations.get(decoration);
if (state != null) {
return state;
}
throw new IllegalArgumentException(String.format("unknown decoration '%s'", decoration));
}
@Override
public @NotNull Style decoration(final @NotNull TextDecoration decoration, final TextDecoration.@NotNull State state) {
requireNonNull(state, "state");
if (this.decoration(decoration) == state) return this;
return new StyleImpl(this.font, this.color, this.decorations.with(decoration, state), this.clickEvent, this.hoverEvent, this.insertion);
}
@Override
public @NotNull Style decorationIfAbsent(final @NotNull TextDecoration decoration, final @NotNull TextDecoration.State state) {
requireNonNull(state, "state");
final TextDecoration.@Nullable State thisState = this.decorations.get(decoration);
if (thisState == TextDecoration.State.NOT_SET) {
return new StyleImpl(this.font, this.color, this.decorations.with(decoration, state), this.clickEvent, this.hoverEvent, this.insertion);
}
if (thisState != null) {
return this;
}
throw new IllegalArgumentException(String.format("unknown decoration '%s'", decoration));
}
@Override
public @NotNull Map<TextDecoration, TextDecoration.State> decorations() {
return this.decorations;
}
@Override
public @NotNull Style decorations(final @NotNull Map<TextDecoration, TextDecoration.State> decorations) {
return new StyleImpl(this.font, this.color, DecorationMap.merge(decorations, this.decorations), this.clickEvent, this.hoverEvent, this.insertion);
}
@Override
public @Nullable ClickEvent clickEvent() {
return this.clickEvent;
}
@Override
public @NotNull Style clickEvent(final @Nullable ClickEvent event) {
return new StyleImpl(this.font, this.color, this.decorations, event, this.hoverEvent, this.insertion);
}
@Override
public @Nullable HoverEvent<?> hoverEvent() {
return this.hoverEvent;
}
@Override
public @NotNull Style hoverEvent(final @Nullable HoverEventSource<?> source) {
return new StyleImpl(this.font, this.color, this.decorations, this.clickEvent, HoverEventSource.unbox(source), this.insertion);
}
@Override
public @Nullable String insertion() {
return this.insertion;
}
@Override
public @NotNull Style insertion(final @Nullable String insertion) {
if (Objects.equals(this.insertion, insertion)) return this;
return new StyleImpl(this.font, this.color, this.decorations, this.clickEvent, this.hoverEvent, insertion);
}
@Override
public @NotNull Style merge(final @NotNull Style that, final Merge.@NotNull Strategy strategy, final @NotNull Set<Merge> merges) {
if (nothingToMerge(that, strategy, merges)) {
return this;
}
if (this.isEmpty() && Merge.hasAll(merges)) {
// if the current style is empty and all merge types have been requested
// we can just return the other style instead of trying to merge
return that;
}
final Builder builder = this.toBuilder();
builder.merge(that, strategy, merges);
return builder.build();
}
@SuppressWarnings("RedundantIfStatement")
static boolean nothingToMerge(final @NotNull Style mergeFrom, final Merge.@NotNull Strategy strategy, final @NotNull Set<Merge> merges) {
if (strategy == Merge.Strategy.NEVER) return true;
if (mergeFrom.isEmpty()) return true;
if (merges.isEmpty()) return true;
return false;
}
@Override
public boolean isEmpty() {
return this == EMPTY;
}
@Override
public @NotNull Builder toBuilder() {
return new BuilderImpl(this);
}
@Override
public @NotNull Stream<? extends ExaminableProperty> examinableProperties() {
return Stream.concat(
this.decorations.examinableProperties(),
Stream.of(
ExaminableProperty.of("color", this.color),
ExaminableProperty.of("clickEvent", this.clickEvent),
ExaminableProperty.of("hoverEvent", this.hoverEvent),
ExaminableProperty.of("insertion", this.insertion),
ExaminableProperty.of("font", this.font)
)
);
}
@Override
public @NotNull String toString() {
return Internals.toString(this);
}
@Override
public boolean equals(final @Nullable Object other) {
if (this == other) return true;
if (!(other instanceof StyleImpl)) return false;
final StyleImpl that = (StyleImpl) other;
return Objects.equals(this.color, that.color)
&& this.decorations.equals(that.decorations)
&& Objects.equals(this.clickEvent, that.clickEvent)
&& Objects.equals(this.hoverEvent, that.hoverEvent)
&& Objects.equals(this.insertion, that.insertion)
&& Objects.equals(this.font, that.font);
}
@Override
public int hashCode() {
int result = Objects.hashCode(this.color);
result = (31 * result) + this.decorations.hashCode();
result = (31 * result) + Objects.hashCode(this.clickEvent);
result = (31 * result) + Objects.hashCode(this.hoverEvent);
result = (31 * result) + Objects.hashCode(this.insertion);
result = (31 * result) + Objects.hashCode(this.font);
return result;
}
static final class BuilderImpl implements Builder {
@Nullable Key font;
@Nullable TextColor color;
final Map<TextDecoration, TextDecoration.State> decorations;
@Nullable ClickEvent clickEvent;
@Nullable HoverEvent<?> hoverEvent;
@Nullable String insertion;
BuilderImpl() {
this.decorations = new EnumMap<>(DecorationMap.EMPTY);
}
BuilderImpl(final @NotNull StyleImpl style) {
this.color = style.color;
this.decorations = new EnumMap<>(style.decorations);
this.clickEvent = style.clickEvent;
this.hoverEvent = style.hoverEvent;
this.insertion = style.insertion;
this.font = style.font;
}
@Override
public @NotNull Builder font(final @Nullable Key font) {
this.font = font;
return this;
}
@Override
public @NotNull Builder color(final @Nullable TextColor color) {
this.color = color;
return this;
}
@Override
public @NotNull Builder colorIfAbsent(final @Nullable TextColor color) {
if (this.color == null) {
this.color = color;
}
return this;
}
@Override
public @NotNull Builder decoration(final @NotNull TextDecoration decoration, final TextDecoration.@NotNull State state) {
requireNonNull(state, "state");
requireNonNull(decoration, "decoration");
this.decorations.put(decoration, state);
return this;
}
@Override
public @NotNull Builder decorationIfAbsent(final @NotNull TextDecoration decoration, final TextDecoration.@NotNull State state) {
requireNonNull(state, "state");
final TextDecoration.@Nullable State thisState = this.decorations.get(decoration);
if (thisState == TextDecoration.State.NOT_SET) {
this.decorations.put(decoration, state);
}
if (thisState != null) {
return this;
}
throw new IllegalArgumentException(String.format("unknown decoration '%s'", decoration));
}
@Override
public @NotNull Builder clickEvent(final @Nullable ClickEvent event) {
this.clickEvent = event;
return this;
}
@Override
public @NotNull Builder hoverEvent(final @Nullable HoverEventSource<?> source) {
this.hoverEvent = HoverEventSource.unbox(source);
return this;
}
@Override
public @NotNull Builder insertion(final @Nullable String insertion) {
this.insertion = insertion;
return this;
}
@Override
public @NotNull Builder merge(final @NotNull Style that, final Merge.@NotNull Strategy strategy, final @NotNull Set<Merge> merges) {
requireNonNull(that, "style");
requireNonNull(strategy, "strategy");
requireNonNull(merges, "merges");
if (nothingToMerge(that, strategy, merges)) {
return this;
}
final Merger merger = merger(strategy);
if (merges.contains(Merge.COLOR)) {
final TextColor color = that.color();
if (color != null) merger.mergeColor(this, color);
}
if (merges.contains(Merge.DECORATIONS)) {
for (int i = 0, length = DecorationMap.DECORATIONS.length; i < length; i++) {
final TextDecoration decoration = DecorationMap.DECORATIONS[i];
final TextDecoration.State state = that.decoration(decoration);
if (state != TextDecoration.State.NOT_SET) merger.mergeDecoration(this, decoration, state);
}
}
if (merges.contains(Merge.EVENTS)) {
final ClickEvent clickEvent = that.clickEvent();
if (clickEvent != null) merger.mergeClickEvent(this, clickEvent);
final HoverEvent<?> hoverEvent = that.hoverEvent();
if (hoverEvent != null) merger.mergeHoverEvent(this, hoverEvent);
}
if (merges.contains(Merge.INSERTION)) {
final String insertion = that.insertion();
if (insertion != null) merger.mergeInsertion(this, insertion);
}
if (merges.contains(Merge.FONT)) {
final Key font = that.font();
if (font != null) merger.mergeFont(this, font);
}
return this;
}
private static Merger merger(final Merge.Strategy strategy) {
if (strategy == Merge.Strategy.ALWAYS) {
return AlwaysMerger.INSTANCE;
} else if (strategy == Merge.Strategy.NEVER) {
throw new UnsupportedOperationException();
} else if (strategy == Merge.Strategy.IF_ABSENT_ON_TARGET) {
return IfAbsentOnTargetMerger.INSTANCE;
}
throw new IllegalArgumentException(strategy.name());
}
@Override
public @NotNull StyleImpl build() {
if (this.isEmpty()) {
return EMPTY;
}
return new StyleImpl(this.font, this.color, this.decorations, this.clickEvent, this.hoverEvent, this.insertion);
}
private boolean isEmpty() {
return this.color == null
&& this.decorations.values().stream().allMatch(state -> state == TextDecoration.State.NOT_SET)
&& this.clickEvent == null
&& this.hoverEvent == null
&& this.insertion == null
&& this.font == null;
}
}
}