Add book events and expressions

src/main/java/ch/njol/skript/classes/data/BukkitEventValues.java

@@ -78,6 +78,7 @@
 import org.bukkit.event.player.PlayerBucketEmptyEvent;
 import org.bukkit.event.player.PlayerBucketFillEvent;
 import org.bukkit.event.player.PlayerDropItemEvent;
+import org.bukkit.event.player.PlayerEditBookEvent;
 import org.bukkit.event.player.PlayerEvent;
 import org.bukkit.event.player.PlayerInteractEntityEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
@@ -846,5 +847,15 @@ public World get(final PortalCreateEvent e) {
 				return e.getWorld();
 			}
 		}, 0);
+		//PlayerEditBookEvent
+		EventValues.registerEventValue(PlayerEditBookEvent.class, ItemStack.class, new Getter<ItemStack, PlayerEditBookEvent>() {
+			@Override
+			public ItemStack get(PlayerEditBookEvent e) {
+				ItemStack book = new ItemStack(e.getPlayer().getItemInHand().getType());
+				book.setItemMeta(e.getNewBookMeta());
+				return book;
+			}
+		}, 0);
+
 	}
 }

src/main/java/ch/njol/skript/events/EvtBookEdit.java

@@ -0,0 +1,55 @@
+/**
+ *   This file is part of Skript.
+ *
+ *  Skript is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Skript is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Skript.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Copyright 2011-2017 Peter Güttinger and contributors
+ */
+package ch.njol.skript.events;
+
+import ch.njol.skript.Skript;
+import ch.njol.skript.lang.Literal;
+import ch.njol.skript.lang.SkriptEvent;
+import ch.njol.skript.lang.SkriptParser;
+import org.bukkit.event.Event;
+import org.bukkit.event.player.PlayerEditBookEvent;
+import org.eclipse.jdt.annotation.Nullable;
+
+public class EvtBookEdit extends SkriptEvent{
+	static {
+		Skript.registerEvent("Book Edit", EvtBookEdit.class, PlayerEditBookEvent.class, "book (edit|change|write)")
+			.description("Called when a player edits a book")
+			.examples("")
+			.since("");
+	}
+
+	@Override
+	public boolean init(Literal<?>[] args, int matchedPattern, SkriptParser.ParseResult parseResult) {
+		return true;
+	}
+
+	@Override
+	public boolean check(Event e) {
+		if (!(e instanceof PlayerEditBookEvent)){
+			return false;
+		}
+		return !((PlayerEditBookEvent) e).isSigning();
+	}
+
+	@Override
+	public String toString(@Nullable Event e, boolean debug) {
+		return "book edit";
+	}
+}

src/main/java/ch/njol/skript/events/EvtBookSign.java

@@ -0,0 +1,55 @@
+/**
+ *   This file is part of Skript.
+ *
+ *  Skript is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Skript is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Skript.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Copyright 2011-2017 Peter Güttinger and contributors
+ */
+package ch.njol.skript.events;
+
+import ch.njol.skript.Skript;
+import ch.njol.skript.lang.Literal;
+import ch.njol.skript.lang.SkriptEvent;
+import ch.njol.skript.lang.SkriptParser;
+import org.bukkit.event.Event;
+import org.bukkit.event.player.PlayerEditBookEvent;
+import org.eclipse.jdt.annotation.Nullable;
+
+public class EvtBookSign extends SkriptEvent{
+	static {
+		Skript.registerEvent("Book Sign", EvtBookSign.class, PlayerEditBookEvent.class, "book sign[ing]")
+				.description("Called when a player signs a book")
+				.examples("")
+				.since("");
+	}
+
+	@Override
+	public boolean init(Literal<?>[] args, int matchedPattern, SkriptParser.ParseResult parseResult) {
+		return true;
+	}
+
+	@Override
+	public boolean check(Event e) {
+		if (!(e instanceof PlayerEditBookEvent)){
+			return false;
+		}
+		return ((PlayerEditBookEvent) e).isSigning();
+	}
+
+	@Override
+	public String toString(@Nullable Event e, boolean debug) {
+		return "book sign";
+	}
+}

src/main/java/ch/njol/skript/expressions/ExprBookAuthor.java

@@ -0,0 +1,91 @@
+/**
+ *   This file is part of Skript.
+ *
+ *  Skript is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Skript is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Skript.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Copyright 2011-2017 Peter Güttinger and contributors
+ */
+package ch.njol.skript.expressions;
+
+import ch.njol.skript.classes.Changer;
+import ch.njol.skript.doc.Description;
+import ch.njol.skript.doc.Examples;
+import ch.njol.skript.doc.Name;
+import ch.njol.skript.doc.Since;
+import ch.njol.skript.expressions.base.SimplePropertyExpression;
+import ch.njol.skript.lang.Expression;
+import org.bukkit.Material;
+import org.bukkit.event.Event;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.BookMeta;
+import org.eclipse.jdt.annotation.Nullable;
+
+@Name("Book Author")
+@Description("The author of a book")
+@Examples({"on book sign:",
+			"	message \"Book Title: %author of event-item%\""})
+@Since("INSERT VERSION")
+public class ExprBookAuthor extends SimplePropertyExpression<ItemStack,String> {
+	static {
+		register(ExprBookAuthor.class, String.class, "[book] (author|writer|publisher)", "itemstack");
+	}
+
+	@Override
+	protected String getPropertyName() {
+		return "author";
+	}
+
+	@Nullable
+	@Override
+	public String convert(ItemStack itemStack) {
+		if (itemStack.getType() != Material.BOOK_AND_QUILL && itemStack.getType() != Material.WRITTEN_BOOK){
+			return null;
+		}
+		return ((BookMeta) itemStack.getItemMeta()).getAuthor();
+	}
+
+	@Override
+	public Class<? extends String> getReturnType() {
+		return String.class;
+	}
+
+	@Nullable
+	@Override
+	public Class<?>[] acceptChange(Changer.ChangeMode mode) {
+		if (mode == Changer.ChangeMode.SET || mode == Changer.ChangeMode.RESET || mode == Changer.ChangeMode.DELETE){
+			return new Class<?>[]{String.class};
+		}
+		return null;
+	}
+
+	@Override
+	public void change(Event e, @Nullable Object[] delta, Changer.ChangeMode mode) {
+		ItemStack itemStack = getExpr().getSingle(e);
+		if (itemStack == null || (itemStack.getType() != Material.WRITTEN_BOOK && itemStack.getType() != Material.BOOK_AND_QUILL)){
+			return;
+		}
+		BookMeta bookMeta = (BookMeta) itemStack.getItemMeta();
+		switch (mode){
+			case SET:
+				bookMeta.setAuthor(delta == null ? "" : (String) delta[0]);
+				break;
+			case RESET:
+			case DELETE:
+				bookMeta.setAuthor("");
+				break;
+		}
+		itemStack.setItemMeta(bookMeta);
+	}
+}

src/main/java/ch/njol/skript/expressions/ExprBookPages.java

@@ -0,0 +1,113 @@
+/**
+ *   This file is part of Skript.
+ *
+ *  Skript is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Skript is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Skript.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Copyright 2011-2017 Peter Güttinger and contributors
+ */
+package ch.njol.skript.expressions;
+
+import ch.njol.skript.Skript;
+import ch.njol.skript.classes.Converter;
+import ch.njol.skript.doc.Description;
+import ch.njol.skript.doc.Examples;
+import ch.njol.skript.doc.Name;
+import ch.njol.skript.doc.Since;
+import ch.njol.skript.expressions.base.PropertyExpression;
+import ch.njol.skript.expressions.base.SimplePropertyExpression;
+import ch.njol.skript.lang.Expression;
+import ch.njol.skript.lang.ExpressionType;
+import ch.njol.skript.lang.SkriptParser;
+import ch.njol.skript.lang.util.SimpleExpression;
+import ch.njol.util.Kleenean;
+import org.bukkit.Material;
+import org.bukkit.event.Event;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.BookMeta;
+import org.eclipse.jdt.annotation.Nullable;
+
+import java.util.List;
+
+@Name("Book Pages")
+@Description("The pages of a book")
+@Examples({"on book sign:",
+			"	message \"Book Pages: %pages of event-item%\"",
+			"   message \"Book Page 1: %page 1 of event-item%\""})
+@Since("INSERT VERSION")
+public class ExprBookPages extends SimpleExpression<String> {
+	static {
+		Skript.registerExpression(ExprBookPages.class, String.class, ExpressionType.PROPERTY, "[all] [the] [book] (pages|content) of %itemstack%", "%itemstack%'s [book] (pages|content)", "[book] page %number% of %itemstack%", "%itemstack%'s [book] page %number%");
+	}
+
+	@SuppressWarnings("null")
+	private Expression<ItemStack> book;
+	@Nullable
+	private Expression<Number> page;
+
+	@Nullable
+	@Override
+	protected String[] get(Event e) {
+		ItemStack itemStack = book.getSingle(e);
+		if (itemStack == null || (itemStack.getType() != Material.BOOK_AND_QUILL && itemStack.getType() != Material.WRITTEN_BOOK)){
+			return null;
+		}
+		List<String> pages = ((BookMeta) itemStack.getItemMeta()).getPages();
+		if (page != null){
+			Number pageNumber = page.getSingle(e);
+			if (pageNumber == null){
+				return null;
+			}
+			int page = pageNumber.intValue();
+			if ((page) > pages.size() || page < 1){
+				return null;
+			}
+			return new String[]{pages.get(page - 1)};
+		}else{
+			return pages.toArray(new String[pages.size()]);
+		}
+	}
+
+	@Override
+	public boolean isSingle() {
+		return page != null;
+	}
+
+	@Override
+	public Class<? extends String> getReturnType() {
+		return String.class;
+	}
+
+	@Override
+	public String toString(@Nullable Event e, boolean debug) {
+		return "book pages of " + book.toString(e, debug);
+	}
+
+	@SuppressWarnings({"unchecked", "null"})
+	@Override
+	public boolean init(Expression<?>[] exprs, int matchedPattern, Kleenean isDelayed, SkriptParser.ParseResult parseResult) {
+		if (matchedPattern == 0 || matchedPattern == 1){
+			book = (Expression<ItemStack>) exprs[0];
+		}else{
+			if (matchedPattern == 2){
+				page =(Expression<Number>) exprs[0];
+				book = (Expression<ItemStack>) exprs[1];
+			}else{
+				book = (Expression<ItemStack>) exprs[0];
+				page = (Expression<Number>) exprs[1];
+			}
+		}
+		return true;
+	}
+}