diff --git a/src/main/java/fr/zcraft/zlib/components/commands/Command.java b/src/main/java/fr/zcraft/zlib/components/commands/Command.java
index 286c7603..6849892c 100644
--- a/src/main/java/fr/zcraft/zlib/components/commands/Command.java
+++ b/src/main/java/fr/zcraft/zlib/components/commands/Command.java
@@ -31,6 +31,9 @@
 package fr.zcraft.zlib.components.commands;
 
 import fr.zcraft.zlib.components.commands.CommandException.Reason;
+import fr.zcraft.zlib.components.i18n.I;
+import fr.zcraft.zlib.components.i18n.I18n;
+import fr.zcraft.zlib.components.i18n.LazyTranslation;
 import fr.zcraft.zlib.components.rawtext.RawText;
 import fr.zcraft.zlib.core.ZLib;
 import fr.zcraft.zlib.tools.text.RawMessage;
@@ -44,10 +47,10 @@
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Set;
 import java.util.regex.Pattern;
 
-
 abstract public class Command
 {
     private static final Pattern FLAG_PATTERN = Pattern.compile("(--?)[a-zA-Z0-9-]+");
@@ -63,6 +66,9 @@ abstract public class Command
 
     protected CommandSender sender;
     protected String[] args;
+    
+    private Locale senderLocale;
+
     protected Set<String> flags;
 
     /**
@@ -158,12 +164,15 @@ protected List<String> complete() throws CommandException
     public void execute(CommandSender sender, String[] args)
     {
         this.sender = sender;
+        this.senderLocale = null;
+
         parseArgs(args);
 
         try
         {
             if (!canExecute(sender, args))
                 throw new CommandException(this, Reason.SENDER_NOT_AUTHORIZED);
+
             run();
         }
         catch (CommandException ex)
@@ -172,6 +181,7 @@ public void execute(CommandSender sender, String[] args)
         }
 
         this.sender = null;
+        this.senderLocale = null;
         this.args = null;
         this.flags = null;
     }
@@ -187,6 +197,7 @@ public List<String> tabComplete(CommandSender sender, String[] args)
         List<String> result = null;
 
         this.sender = sender;
+        this.senderLocale = null;
         parseArgs(args);
 
         try
@@ -194,9 +205,10 @@ public List<String> tabComplete(CommandSender sender, String[] args)
             if (canExecute(sender, args))
                 result = complete();
         }
-        catch (CommandException ignored) {}
+        catch (CommandException ignored){}
 
         this.sender = null;
+        this.senderLocale = null;
         this.args = null;
         this.flags = null;
 
@@ -379,6 +391,7 @@ private static boolean isValidFlag(Set<String> acceptedFlags, String flag)
     }
 
 
+
     ///////////// Common methods for commands /////////////
 
     /**
@@ -394,6 +407,12 @@ protected void throwInvalidArgument(String reason) throws CommandException
         throw new CommandException(this, Reason.INVALID_PARAMETERS, reason);
     }
 
+    protected void throwInvalidArgument(LazyTranslation reason, Object... parameters) throws CommandException
+    {
+        throwInvalidArgument(I.tl(getSenderLocale(), reason, parameters));
+    }
+    
+
     /**
      * Stops the command execution because the command usage is disallowed, and
      * displays an error message.
@@ -408,7 +427,7 @@ protected void throwNotAuthorized() throws CommandException
     /**
      * Retrieves the {@link Player} who executed this command. If the command is
      * not executed by a player, aborts the execution and displays an error
-     * messagE.
+     * message.
      *
      * @return The player executing this command.
      * @throws CommandException If the sender is not a player.
@@ -420,6 +439,32 @@ protected Player playerSender() throws CommandException
         return (Player) sender;
     }
 
+    /**
+     * Retrieves the sender's locale. If it cannot be retrieved for some reason,
+     * or if the sender is not a player (e.g. the console), the primary, or the
+     * fallback if no primary is defined, language is returned instead.
+     *
+     * @return The {@link Locale} to use for this sender.
+     */
+    protected Locale getSenderLocale()
+    {
+        if(sender == null) return null;
+        
+        if(senderLocale != null) return senderLocale;
+        
+        if(sender instanceof Player) 
+            senderLocale = I18n.getPlayerLocale((Player) sender);
+        
+        if(senderLocale == null)
+            senderLocale = I18n.getPrimaryLocale();
+        
+        if(senderLocale == null)
+            senderLocale = I18n.getFallbackLocale();
+        
+        return senderLocale;
+    }
+
+
 
     ///////////// Methods for command execution /////////////
 
@@ -444,6 +489,20 @@ protected void info(String message)
         info(sender, message);
     }
 
+    /**
+     * Displays a gray informational message to the sender.
+     *
+     * @param message The message to display.
+     * @param parameters The parameters of the I18n message.
+     *
+     * @see I#t(Locale, LazyTranslation, Object...) the underlying method used
+     * to retrieve the text and merge it with the parameters.
+     */
+    protected void info(LazyTranslation message, Object... parameters)
+    {
+        info(I.tl(getSenderLocale(), message, parameters));
+    }
+
     /**
      * Displays a green success message.
      *
@@ -465,6 +524,21 @@ protected void success(String message)
         success(sender, message);
     }
 
+    /**
+     * Displays a green success message to the sender.
+     *
+     * @param message The message to display.
+     * @param parameters The parameters of the I18n message.
+     *
+     * @see I#t(Locale, LazyTranslation, Object...) the underlying method used
+     * to retrieve the text and merge it with the parameters.
+     */
+    protected void success(LazyTranslation message, Object... parameters)
+    {
+        success(I.tl(getSenderLocale(), message, parameters));
+    }
+    
+
     /**
      * Displays a red warning message.
      *
@@ -486,22 +560,57 @@ protected void warning(String message)
         warning(sender, message);
     }
 
+    /**
+     * Displays a red warning message to the sender.
+     *
+     * @param message The message to display.
+     * @param parameters The parameters of the I18n message.
+     *
+     * @see I#t(Locale, LazyTranslation, Object...) the underlying method used
+     * to retrieve the text and merge it with the parameters.
+     */
+    protected void warning(LazyTranslation message, Object... parameters)
+    {
+        warning(I.tl(getSenderLocale(), message, parameters));
+    }
+
+
     /**
      * Aborts the execution and displays an error message.
      *
      * @param message The message.
      *
-     * @throws CommandException
+     * @throws CommandException This method always throws a {@link Reason#COMMAND_ERROR}'s
+     * {@link CommandException}, interrupting the execution of the command.
      */
     protected void error(String message) throws CommandException
     {
         throw new CommandException(this, Reason.COMMAND_ERROR, message);
     }
 
+    /**
+     * Aborts the execution and displays an error message.
+     *
+     * @param message The message.
+     * @param parameters The parameters of the I18n message.
+     *
+     * @throws CommandException This method always throws a {@link Reason#COMMAND_ERROR}'s
+     * {@link CommandException}, interrupting the execution of the command.
+     *
+     * @see I#t(Locale, LazyTranslation, Object...) the underlying method used
+     * to retrieve the text and merge it with the parameters.
+     */
+    protected void error(LazyTranslation message, Object... parameters) throws CommandException
+    {
+        error(I.tl(getSenderLocale(), message, parameters));
+    }
+
+
     /**
      * Aborts the execution and displays a generic error message.
      *
-     * @throws CommandException
+     * @throws CommandException This method always throws a {@link Reason#COMMAND_ERROR}'s
+     * {@link CommandException}, interrupting the execution of the command.
      */
     protected void error() throws CommandException
     {
@@ -527,6 +636,9 @@ protected void tellRaw(String rawMessage) throws CommandException
      */
     protected void send(RawText text)
     {
+        if(text.getLocale() == null)
+            text.locale(getSenderLocale());
+        
         RawMessage.send(sender, text);
     }
 
diff --git a/src/main/java/fr/zcraft/zlib/components/gui/ActionGui.java b/src/main/java/fr/zcraft/zlib/components/gui/ActionGui.java
index 41870d8f..5001edab 100644
--- a/src/main/java/fr/zcraft/zlib/components/gui/ActionGui.java
+++ b/src/main/java/fr/zcraft/zlib/components/gui/ActionGui.java
@@ -130,10 +130,12 @@ protected void action(String name, int slot, ItemStack item, String title, List<
      * @param name The identifier of the action.
      * @param slot The slot the action will be placed on.
      * @param material The material used to represent the action.
+     * @return an {@link fr.zcraft.zlib.tools.items.ItemStackBuilder} ItemStackBuilder to build the representing item
      */
-    protected void action(String name, int slot, Material material)
+    protected ItemStackBuilder action(String name, int slot, Material material)
     {
-        action(name, slot, GuiUtils.makeItem(material));
+        return action(name, slot)
+                .material(material);
     }
     
     /**
@@ -180,7 +182,7 @@ protected ItemStackBuilder action(String name, int slot, ItemStack item)
         
         action(action);
         
-        if(item == null) return action.updateItem();
+        if(item == null) return action.updateItem().locale(getPlayerLocale());
         return null;
     }
     
@@ -243,7 +245,7 @@ protected ItemStackBuilder updateAction(String name, Material material)
     
     protected ItemStackBuilder updateAction(String name)
     {
-        return getAction(name).updateItem();
+        return getAction(name).updateItem().locale(getPlayerLocale());
     }
 
     /**
diff --git a/src/main/java/fr/zcraft/zlib/components/gui/GuiBase.java b/src/main/java/fr/zcraft/zlib/components/gui/GuiBase.java
index 57f45875..5d4c4d0a 100644
--- a/src/main/java/fr/zcraft/zlib/components/gui/GuiBase.java
+++ b/src/main/java/fr/zcraft/zlib/components/gui/GuiBase.java
@@ -30,7 +30,9 @@
 
 package fr.zcraft.zlib.components.gui;
 
+import fr.zcraft.zlib.components.i18n.I;
 import fr.zcraft.zlib.components.i18n.I18n;
+import fr.zcraft.zlib.components.i18n.LazyTranslation;
 import fr.zcraft.zlib.core.ZLib;
 import java.util.Locale;
 import org.bukkit.entity.Player;
@@ -164,6 +166,25 @@ void setParent(GuiBase parent)
     /** @return The locale used by the player this Gui instance is associated to. */
     protected final Locale getPlayerLocale() { return playerLocale; }
     
+    /**
+     * Sends a message to the player this Gui instance is associated to.
+     * @param message The message to send to the player.
+     */
+    protected void sendMessage(String message)
+    {
+        getPlayer().sendMessage(message);
+    }
+    
+    /**
+     * Sends a message to the player this Gui instance is associated to.
+     * @param message The message to send to the player.
+     * @param parameters Parameters for the translatable format text, if any.
+     */
+    protected void sendMessage(LazyTranslation message, Object... parameters)
+    {
+        sendMessage(I.tl(getPlayerLocale(), message, parameters));
+    }
+    
     protected boolean checkImmune()
     {
         if(!immune) return false;
@@ -176,6 +197,4 @@ private void setImmune(boolean immune)
         this.immune = immune;
     }
     
-    /* ===== Static API ===== */
-    
 }
diff --git a/src/main/java/fr/zcraft/zlib/components/gui/InventoryGui.java b/src/main/java/fr/zcraft/zlib/components/gui/InventoryGui.java
index 961d93f8..fc286c38 100644
--- a/src/main/java/fr/zcraft/zlib/components/gui/InventoryGui.java
+++ b/src/main/java/fr/zcraft/zlib/components/gui/InventoryGui.java
@@ -30,6 +30,8 @@
 
 package fr.zcraft.zlib.components.gui;
 
+import fr.zcraft.zlib.components.i18n.I;
+import fr.zcraft.zlib.components.i18n.LazyTranslation;
 import fr.zcraft.zlib.tools.items.InventoryUtils;
 import fr.zcraft.zlib.tools.runners.RunTask;
 import org.bukkit.Bukkit;
@@ -247,6 +249,17 @@ protected void setTitle(String title)
         this.title = title;
     }
     
+    /**
+     * Sets the new title of the inventory.
+     * It will be applied on the next GUI update.
+     * @param title The new title of the inventory
+     * @param parameters Parameters for the translatable format text, if any.
+     */
+    protected void setTitle(LazyTranslation title, Object ...parameters)
+    {
+        setTitle(I.tl(getPlayerLocale(), title, parameters));
+    }
+    
     /** @return The underlying inventory, or null if the Gui has not been opened yet. */
     public Inventory getInventory() { return inventory; }
     
diff --git a/src/main/java/fr/zcraft/zlib/components/i18n/I.java b/src/main/java/fr/zcraft/zlib/components/i18n/I.java
index e3b3b3ef..a1de0dc1 100644
--- a/src/main/java/fr/zcraft/zlib/components/i18n/I.java
+++ b/src/main/java/fr/zcraft/zlib/components/i18n/I.java
@@ -87,6 +87,16 @@ public static String t(String text, Object... parameters)
     {
         return I18n.translate(null, null, text, null, null, parameters);
     }
+    
+    public static String tl(Locale locale, LazyTranslation text, Object... parameters)
+    {
+        return I18n.translate(locale, text, parameters);
+    }
+    
+    public static String tl(LazyTranslation text, Object... parameters)
+    {
+        return tl(null, text, parameters);
+    }
 
     /**
      * Translates the string with a plural.
@@ -304,5 +314,24 @@ public static void sendTcn(Player player, String context, String singular, Strin
     {
         player.sendMessage(I18n.translate(I18n.getPlayerLocale(player), context, singular, plural, count, parameters));
     }
+
+    public static LazyTranslation l(String messageId)
+    {
+        return lcn(null, messageId, null, null);
+    }
     
+    public static LazyTranslation ln(String messageId, String pluralMessageId, Integer count)
+    {
+        return lcn(null, messageId, pluralMessageId, count);
+    }
+
+    public static LazyTranslation lc(String messageId, Integer count)
+    {
+        return lcn(null, messageId, null, count);
+    }
+
+    public static LazyTranslation lcn(String context, String messageId, String pluralMessageId, Integer count)
+    {
+        return new LazyTranslation(messageId, pluralMessageId, count, context);
+    }
 }
diff --git a/src/main/java/fr/zcraft/zlib/components/i18n/I18n.java b/src/main/java/fr/zcraft/zlib/components/i18n/I18n.java
index 7260613d..0ec960fc 100644
--- a/src/main/java/fr/zcraft/zlib/components/i18n/I18n.java
+++ b/src/main/java/fr/zcraft/zlib/components/i18n/I18n.java
@@ -647,6 +647,21 @@ public static String translate(String context, String messageId, String messageI
         return translate(null, context, messageId, messageIdPlural, count, parameters);
     }
     
+    /**
+     * Translates the given string.
+     *
+     * @param locale          The locale to use to translate the string.
+     * @param text            The text to translate
+     * @param parameters      The parameters, replacing values like {@code {0}} in the translated
+     *                        string.
+     *
+     * @return The translated text, with the parameters replaced by their values.
+     */
+    public static String translate(Locale locale, LazyTranslation text, Object... parameters)
+    {
+        return translate(locale, text.getContext(), text.getMessageId(), text.getPluralMessageId(), text.getCount(), parameters);
+    }
+    
     /**
      * Replaces some formatting codes into system codes.
      *
diff --git a/src/main/java/fr/zcraft/zlib/components/i18n/LazyTranslation.java b/src/main/java/fr/zcraft/zlib/components/i18n/LazyTranslation.java
new file mode 100644
index 00000000..222a09f5
--- /dev/null
+++ b/src/main/java/fr/zcraft/zlib/components/i18n/LazyTranslation.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright or © or Copr. ZLib contributors (2015 - 2016)
+ *
+ * This software is governed by the CeCILL-B license under French law and
+ * abiding by the rules of distribution of free software.  You can  use,
+ * modify and/ or redistribute the software under the terms of the CeCILL-B
+ * license as circulated by CEA, CNRS and INRIA at the following URL
+ * "http://www.cecill.info".
+ *
+ * As a counterpart to the access to the source code and  rights to copy,
+ * modify and redistribute granted by the license, users are provided only
+ * with a limited warranty  and the software's author,  the holder of the
+ * economic rights,  and the successive licensors  have only  limited
+ * liability.
+ *
+ * In this respect, the user's attention is drawn to the risks associated
+ * with loading,  using,  modifying and/or developing or reproducing the
+ * software by the user in light of its specific status of free software,
+ * that may mean  that it is complicated to manipulate,  and  that  also
+ * therefore means  that it is reserved for developers  and  experienced
+ * professionals having in-depth computer knowledge. Users are therefore
+ * encouraged to load and test the software's suitability as regards their
+ * requirements in conditions enabling the security of their systems and/or
+ * data to be ensured and,  more generally, to use and operate it in the
+ * same conditions as regards security.
+ *
+ * The fact that you are presently reading this means that you have had
+ * knowledge of the CeCILL-B license and that you accept its terms.
+ */
+
+package fr.zcraft.zlib.components.i18n;
+
+public class LazyTranslation
+{
+    private final String messageId;
+    private final String pluralMessageId;
+    private final Integer count;
+    private final String context;
+    
+    private Object[] parameters;
+    
+    public LazyTranslation(String messageId, String pluralMessageId, Integer count, String context)
+    {
+        this.messageId = messageId;
+        this.pluralMessageId = pluralMessageId;
+        this.count = count;
+        this.context = context;
+    }
+    
+    public LazyTranslation(String messageId)
+    {
+        this(messageId, null, null, null);
+    }
+
+    public String getMessageId()
+    {
+        return messageId;
+    }
+
+    public String getPluralMessageId()
+    {
+        return pluralMessageId;
+    }
+
+    public Integer getCount()
+    {
+        return count;
+    }
+    
+    public String getContext()
+    {
+        return context;
+    }
+
+    public Object[] getParameters()
+    {
+        return parameters;
+    }
+
+    public void setParameters(Object[] parameters)
+    {
+        this.parameters = parameters;
+    }
+}
diff --git a/src/main/java/fr/zcraft/zlib/components/rawtext/RawTextPart.java b/src/main/java/fr/zcraft/zlib/components/rawtext/RawTextPart.java
index 964385fc..7b6f99d4 100644
--- a/src/main/java/fr/zcraft/zlib/components/rawtext/RawTextPart.java
+++ b/src/main/java/fr/zcraft/zlib/components/rawtext/RawTextPart.java
@@ -28,13 +28,15 @@
  * knowledge of the CeCILL-B license and that you accept its terms.
  */
 
-
 package fr.zcraft.zlib.components.rawtext;
 
 import com.google.common.base.CaseFormat;
 import fr.zcraft.zlib.components.commands.Command;
 import fr.zcraft.zlib.components.commands.Commands;
+import fr.zcraft.zlib.components.i18n.I;
+import fr.zcraft.zlib.components.i18n.LazyTranslation;
 import fr.zcraft.zlib.tools.PluginLogger;
+import fr.zcraft.zlib.tools.items.ItemStackBuilder;
 import fr.zcraft.zlib.tools.items.ItemUtils;
 import fr.zcraft.zlib.tools.reflection.NMSException;
 import org.bukkit.Achievement;
@@ -50,17 +52,19 @@
 import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.Iterator;
+import java.util.Locale;
+
 
 public abstract class RawTextPart<T extends RawTextPart<T>> implements Iterable<RawTextPart>, JSONAware
 {
-    static private enum ActionClick
+    private enum ActionClick
     {
         OPEN_URL,
         RUN_COMMAND,
         SUGGEST_COMMAND
     }
     
-    static private enum ActionHover
+    private enum ActionHover
     {
         SHOW_TEXT,
         SHOW_ACHIEVEMENT,
@@ -68,8 +72,12 @@ static private enum ActionHover
         SHOW_ENTITY
     }
     
-    private String text;
+    private String text = null;
+    private LazyTranslation lazyTranslation = null;
+    private Object[] textParameters = null;
     private boolean translate = false;
+
+    private Locale locale = null;
     
     private final RawTextPart parent;
     private final ArrayList<RawTextPart> extra = new ArrayList<>();
@@ -95,7 +103,7 @@ static private enum ActionHover
 
     RawTextPart()
     {
-        this(null);
+        this((String) null);
     }
     
     RawTextPart(String text)
@@ -103,12 +111,25 @@ static private enum ActionHover
         this(text, null);
     }
     
+    RawTextPart(LazyTranslation text)
+    {
+        this(null, text);
+    }
+    
     RawTextPart(String text, RawTextPart parent)
     {
         this.text = text;
         this.parent = parent;
     }
 
+    RawTextPart(RawTextPart parent, LazyTranslation text, Object... parameters)
+    {
+        this.lazyTranslation = text;
+        this.parent = parent;
+        this.textParameters = parameters;
+    }
+    
+
     /**
      * Starts a new text component with no predefined text.
      *
@@ -117,7 +138,7 @@ static private enum ActionHover
      */
     public RawTextPart then()
     {
-        return then(null);
+        return then((String) null);
     }
 
     /**
@@ -134,6 +155,15 @@ public RawTextPart then(String text)
         return newPart;
     }
 
+    public RawTextPart then(LazyTranslation text, Object... parameters)
+    {
+        RawTextPart root = getRoot();
+        RawTextPart newPart = new RawTextSubPart(root, text, parameters);
+        
+        root.extra.add(newPart);
+        return newPart;
+    }
+
     /**
      * Sets the text of this component.
      *
@@ -143,10 +173,22 @@ public RawTextPart then(String text)
     public T text(String text)
     {
         this.text = text;
+        this.lazyTranslation = null;
+        this.translate = false;
+        
+        return (T)this;
+    }
+
+    public T text(LazyTranslation text, Object... parameters)
+    {
+        this.text = null;
+        this.lazyTranslation = text;
         this.translate = false;
+        this.textParameters = parameters;
         
         return (T)this;
     }
+    
 
     /**
      * Sets the text to be a translation key. This have to be a valid key in the Minecraft translation files.
@@ -157,6 +199,7 @@ public T text(String text)
     public T translate(String text)
     {
         this.text = text;
+        this.lazyTranslation = null;
         this.translate = true;
         
         return (T)this;
@@ -185,6 +228,20 @@ public T translate(ItemStack item)
         return translate(trName);
     }
 
+    public T locale(Locale locale)
+    {
+        this.locale = locale;
+        return (T)this;
+    }
+    
+    public Locale getLocale()
+    {
+        if(this.locale == null && this.parent != null)
+            return this.parent.getLocale();
+        return this.locale;
+    }
+    
+
     /**
      * Sets the color of this text component.
      *
@@ -300,6 +357,9 @@ public T hover(String hoverText)
      */
     public T hover(RawTextPart hoverText)
     {
+        if(hoverText.getLocale() == null)
+            hoverText.locale(getLocale());
+        
         return hover(ActionHover.SHOW_TEXT, hoverText.build());
     }
 
@@ -349,6 +409,13 @@ public T hover(ItemStack item)
         return hover(ActionHover.SHOW_ITEM, RawText.toJSONString(item));
     }
 
+    public T hover(ItemStackBuilder item)
+    {
+        if(item.getLocale() != null)
+            item.locale(getLocale());
+        return hover(item.item());
+    }
+
     /**
      * Adds an hover entity to this component.
      *
@@ -536,7 +603,7 @@ public JSONObject toJSON()
         }
         else
         {
-            obj.put("text", text);
+            obj.put("text", getText());
         }
         
         if(!extra.isEmpty())
@@ -599,7 +666,7 @@ public String toPlainText()
     
     private void writePlainText(StringBuilder buf)
     {
-        buf.append(text);
+        buf.append(getText());
         
         for(RawTextPart subPart : this)
         {
@@ -626,14 +693,23 @@ private void writeFormattedText(StringBuilder buf)
         if(strikethrough) buf.append(ChatColor.STRIKETHROUGH);
         if(obfuscated) buf.append(ChatColor.MAGIC);
         
-        buf.append(text);
+        buf.append(getText());
         buf.append(ChatColor.RESET);
         
         for(RawTextPart subPart : this)
         {
             subPart.writeFormattedText(buf);
         }
+    }
+    
+    private String getText()
+    {
+        if(lazyTranslation != null)
+        {
+            return I.tl(getLocale(), lazyTranslation, textParameters);
+        }
         
+        return text;
     }
 
     @Override
diff --git a/src/main/java/fr/zcraft/zlib/components/rawtext/RawTextSubPart.java b/src/main/java/fr/zcraft/zlib/components/rawtext/RawTextSubPart.java
index ee6788e2..9abbf335 100644
--- a/src/main/java/fr/zcraft/zlib/components/rawtext/RawTextSubPart.java
+++ b/src/main/java/fr/zcraft/zlib/components/rawtext/RawTextSubPart.java
@@ -30,6 +30,8 @@
 
 package fr.zcraft.zlib.components.rawtext;
 
+import fr.zcraft.zlib.components.i18n.LazyTranslation;
+
 class RawTextSubPart extends RawTextPart<RawTextSubPart>
 {
     public RawTextSubPart(String text)
@@ -37,8 +39,18 @@ public RawTextSubPart(String text)
         super(text);
     }
     
+    public RawTextSubPart(LazyTranslation text)
+    {
+        super(text);
+    }
+    
     public RawTextSubPart(String text, RawTextPart parent)
     {
         super(text, parent);
     }
+    
+    public RawTextSubPart(RawTextPart parent, LazyTranslation text, Object... parameters)
+    {
+        super(parent, text, parameters);
+    }
 }
diff --git a/src/main/java/fr/zcraft/zlib/tools/items/ItemStackBuilder.java b/src/main/java/fr/zcraft/zlib/tools/items/ItemStackBuilder.java
index 53bb78be..1c3b1972 100644
--- a/src/main/java/fr/zcraft/zlib/tools/items/ItemStackBuilder.java
+++ b/src/main/java/fr/zcraft/zlib/tools/items/ItemStackBuilder.java
@@ -31,6 +31,8 @@
 package fr.zcraft.zlib.tools.items;
 
 import fr.zcraft.zlib.components.gui.GuiUtils;
+import fr.zcraft.zlib.components.i18n.I;
+import fr.zcraft.zlib.components.i18n.LazyTranslation;
 import fr.zcraft.zlib.components.nbt.NBT;
 import fr.zcraft.zlib.components.nbt.NBTCompound;
 import fr.zcraft.zlib.components.rawtext.RawText;
@@ -48,8 +50,10 @@
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Map.Entry;
 
@@ -135,6 +139,8 @@ public class ItemStackBuilder
 
     private DyeColor dye = null;
 
+    private Locale locale = null;
+    
     /**
      * Creates a new ItemStackBuilder.
      */
@@ -230,7 +236,12 @@ public ItemStack item()
         ItemMeta meta = newItemStack.getItemMeta();
 
         if (title != null)
+        {
+            if(title.getLocale() == null)
+                title.locale(locale);
+        
             meta.setDisplayName(ChatColor.RESET + title.build().toFormattedText());
+        }
 
         if (!loreLines.isEmpty() || resetLore)
             meta.setLore(loreLines);
@@ -329,7 +340,7 @@ public ItemStackBuilder title(RawTextPart text)
     {
         if (this.title != null)
             throw new IllegalStateException("Title has already been defined.");
-
+        
         this.title = text;
         return this;
     }
@@ -359,6 +370,20 @@ public ItemStackBuilder title(ChatColor color, String... texts)
         return this;
     }
 
+    /**
+     * Sets the title of the ItemStack. If a text has already been defined, it
+     * will be appended to the already existing one.
+     *
+     * @param text The text. It will be translated using the locale currently set for the ItemStack. 
+     * @param parameters Parameters for the translatable format text, if any.
+     *
+     * @return The current ItemStackBuilder instance, for methods chaining.
+     */
+    public ItemStackBuilder title(LazyTranslation text, Object ...parameters)
+    {
+        return title(I.tl(locale, text, parameters));
+    }
+    
     /**
      * Sets the title of the ItemStack. If a text has already been defined, it
      * will be appended to the already existing one.
@@ -370,7 +395,7 @@ public ItemStackBuilder title(ChatColor color, String... texts)
      */
     public ItemStackBuilder title(String... texts)
     {
-        return title(null, texts);
+        return title((ChatColor) null, texts);
     }
 
     /**
@@ -393,7 +418,7 @@ public ItemStackBuilder lore(String... lines)
      *
      * @return The current ItemStackBuilder instance, for methods chaining.
      */
-    public ItemStackBuilder lore(List<String> lines)
+    public ItemStackBuilder lore(Collection<? extends String> lines)
     {
         loreLines.addAll(lines);
         return this;
@@ -409,7 +434,34 @@ public ItemStackBuilder lore(List<String> lines)
      */
     public ItemStackBuilder loreLine(String... text)
     {
-        return loreLine(null, text);
+        return loreLine((ChatColor) null, text);
+    }
+    
+    /**
+     * Adds one line of lore to the ItemStack.
+     *
+     * @param text The lore line's text. It will be translated using the locale currently set for the ItemStack. 
+     * @param parameters Parameters for the translatable format text, if any.
+     *
+     * @return The current ItemStackBuilder instance, for methods chaining.
+     */
+    public ItemStackBuilder loreLine(LazyTranslation text, Object ...parameters)
+    {
+        return loreLine(I.tl(locale, text, parameters));
+    }
+    
+    /**
+     * Adds one line of lore to the ItemStack.
+     * This method is an alias for {@link #loreLine(LazyTranslation, java.lang.Object...) }.
+     *
+     * @param text The lore line's text. It will be translated using the locale currently set for the ItemStack. 
+     * @param parameters Parameters for the translatable format text, if any.
+     *
+     * @return The current ItemStackBuilder instance, for methods chaining.
+     */
+    public ItemStackBuilder lore(LazyTranslation text, Object ...parameters)
+    {
+        return loreLine(text, parameters);
     }
 
     /**
@@ -440,6 +492,9 @@ public ItemStackBuilder loreLine(ChatColor color, String... text)
      */
     public ItemStackBuilder loreLine(RawTextPart rawText)
     {
+        if(rawText.getLocale() == null)
+            rawText.locale(locale);
+        
         return loreLine(rawText.toFormattedText());
     }
 
@@ -462,7 +517,7 @@ public ItemStackBuilder longLore(String text)
      * characters, so the tooltip is not too large.
      *
      * @param text       The text.
-     * @param lineLength The max length of a line.
+     * @param lineLength The maximum length of a line.
      *
      * @return The current ItemStackBuilder instance, for methods chaining.
      * @see GuiUtils#generateLore(String, int)
@@ -493,7 +548,7 @@ public ItemStackBuilder longLore(ChatColor color, String text)
      *
      * @param color      The color for this line of lore.
      * @param text       The text.
-     * @param lineLength The max length of a line.
+     * @param lineLength The maximum length of a line.
      *
      * @return The current ItemStackBuilder instance, for methods chaining.
      * @see GuiUtils#generateLore(String, int)
@@ -502,6 +557,35 @@ public ItemStackBuilder longLore(ChatColor color, String text, int lineLength)
     {
         return longLore(color + text, lineLength);
     }
+    
+    /**
+     * Adds a line of lore and wraps it to lines of {@code lineLength} 
+     * characters, so the tooltip is not too large.
+     *
+     * @param lineLength The maximum length of a line.
+     * @param text The lore line's text. It will be translated using the locale currently set for the ItemStack. 
+     * @param parameters Parameters for the translatable format text, if any.
+     *
+     * @return The current ItemStackBuilder instance, for methods chaining.
+     */
+    public ItemStackBuilder longLore(int lineLength, LazyTranslation text, Object ...parameters)
+    {
+        return longLore(I.tl(locale, text, parameters), lineLength);
+    }
+    
+    /**
+     * Adds a line of lore and wraps it to lines of {@code lineLength} 
+     * characters, so the tooltip is not too large.
+     *
+     * @param text The lore line's text. It will be translated using the locale currently set for the ItemStack. 
+     * @param parameters Parameters for the translatable format text, if any.
+     *
+     * @return The current ItemStackBuilder instance, for methods chaining.
+     */
+    public ItemStackBuilder longLore(LazyTranslation text, Object ...parameters)
+    {
+        return longLore(I.tl(locale, text, parameters));
+    }
 
     /**
      * Adds an empty line in the lore to act as a separator.
@@ -684,6 +768,26 @@ public ItemStackBuilder replaceNBT()
         this.replaceNBT = true;
         return this;
     }
+    
+    /**
+     * Sets the locale used to translate different strings of the ItemStack.
+     * @param locale The locale to use.
+     * @return The current ItemStackBuilder instance, for methods chaining.
+     */
+    public ItemStackBuilder locale(Locale locale)
+    {
+        this.locale = locale;
+        return this;
+    }
+    
+    /**
+     * Retreives the locale assigned to this ItemStackBuilder
+     * @return the locale assigned to this ItemStackBuilder, or null if not defined.
+     */
+    public Locale getLocale()
+    {
+        return this.locale;
+    }
 
     /**
      * Concatenates a String[] to a single one.
diff --git a/src/main/java/fr/zcraft/zlib/tools/items/ItemUtils.java b/src/main/java/fr/zcraft/zlib/tools/items/ItemUtils.java
index b9ad8dae..30f3857e 100644
--- a/src/main/java/fr/zcraft/zlib/tools/items/ItemUtils.java
+++ b/src/main/java/fr/zcraft/zlib/tools/items/ItemUtils.java
@@ -29,6 +29,8 @@
  */
 package fr.zcraft.zlib.tools.items;
 
+import fr.zcraft.zlib.components.i18n.I;
+import fr.zcraft.zlib.components.i18n.LazyTranslation;
 import fr.zcraft.zlib.tools.PluginLogger;
 import fr.zcraft.zlib.tools.reflection.NMSException;
 import fr.zcraft.zlib.tools.reflection.Reflection;
@@ -49,6 +51,7 @@
 import java.lang.reflect.Type;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Locale;
 import java.util.Random;
 
 //import org.bukkit.Sound;
diff --git a/src/main/java/fr/zcraft/zlib/tools/text/ListHeaderFooter.java b/src/main/java/fr/zcraft/zlib/tools/text/ListHeaderFooter.java
index 0c64ee3b..57c06071 100644
--- a/src/main/java/fr/zcraft/zlib/tools/text/ListHeaderFooter.java
+++ b/src/main/java/fr/zcraft/zlib/tools/text/ListHeaderFooter.java
@@ -29,6 +29,7 @@
  */
 package fr.zcraft.zlib.tools.text;
 
+import fr.zcraft.zlib.components.i18n.I18n;
 import fr.zcraft.zlib.components.rawtext.RawText;
 import fr.zcraft.zlib.exceptions.IncompatibleMinecraftVersionException;
 import fr.zcraft.zlib.tools.reflection.NMSNetwork;
@@ -37,6 +38,7 @@
 import org.bukkit.entity.Player;
 
 import java.lang.reflect.InvocationTargetException;
+import java.util.Locale;
 
 
 /**
@@ -108,6 +110,17 @@ public static void sendListHeaderFooter(Player player, String header, String foo
      */
     public static void sendListHeaderFooter(Player player, RawText header, RawText footer)
     {
+        Locale playerLocale = null;
+        
+        if(header != null || footer != null)
+            playerLocale = I18n.getPlayerLocale(player);
+        
+        if(header != null && header.getLocale() != null)
+            header.locale(playerLocale);
+        
+        if(footer != null && footer.getLocale() != null)
+            footer.locale(playerLocale);
+        
         sendRawListHeaderFooter(
                 player,
                 header != null ? header.toJSONString() : "{\"text\": \"\"}",
diff --git a/src/main/java/fr/zcraft/zlib/tools/text/MessageSender.java b/src/main/java/fr/zcraft/zlib/tools/text/MessageSender.java
index 31032323..a5c95354 100644
--- a/src/main/java/fr/zcraft/zlib/tools/text/MessageSender.java
+++ b/src/main/java/fr/zcraft/zlib/tools/text/MessageSender.java
@@ -29,6 +29,7 @@
  */
 package fr.zcraft.zlib.tools.text;
 
+import fr.zcraft.zlib.components.i18n.I18n;
 import fr.zcraft.zlib.components.rawtext.RawText;
 import fr.zcraft.zlib.tools.PluginLogger;
 import fr.zcraft.zlib.tools.reflection.NMSNetwork;
@@ -157,6 +158,8 @@ public static boolean sendMessage(Player receiver, String message, MessageType t
      */
     public static boolean sendMessage(Player receiver, RawText message, MessageType type)
     {
+        if(message.getLocale() != null)
+            message.locale(I18n.getPlayerLocale(receiver));
         return sendChatPacket(receiver, type.isJSON() ? message.toJSONString() : message.toFormattedText(), type);
     }
 
diff --git a/src/main/java/fr/zcraft/zlib/tools/text/RawMessage.java b/src/main/java/fr/zcraft/zlib/tools/text/RawMessage.java
index 0086831a..954d2017 100644
--- a/src/main/java/fr/zcraft/zlib/tools/text/RawMessage.java
+++ b/src/main/java/fr/zcraft/zlib/tools/text/RawMessage.java
@@ -29,6 +29,7 @@
  */
 package fr.zcraft.zlib.tools.text;
 
+import fr.zcraft.zlib.components.i18n.I18n;
 import fr.zcraft.zlib.components.rawtext.RawText;
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandException;
@@ -63,6 +64,9 @@ public static void send(CommandSender commandSender, RawText text)
     {
         if(commandSender instanceof Player)
         {
+            if(text.getLocale() == null)
+                text.locale(I18n.getPlayerLocale((Player) commandSender));
+            
             send((Player) commandSender, text.toJSONString());
         }
         else
diff --git a/src/main/java/fr/zcraft/zlib/tools/text/Titles.java b/src/main/java/fr/zcraft/zlib/tools/text/Titles.java
index 92ff8e71..c646d3d6 100644
--- a/src/main/java/fr/zcraft/zlib/tools/text/Titles.java
+++ b/src/main/java/fr/zcraft/zlib/tools/text/Titles.java
@@ -29,6 +29,7 @@
  */
 package fr.zcraft.zlib.tools.text;
 
+import fr.zcraft.zlib.components.i18n.I18n;
 import fr.zcraft.zlib.components.rawtext.RawText;
 import fr.zcraft.zlib.exceptions.IncompatibleMinecraftVersionException;
 import fr.zcraft.zlib.tools.reflection.NMSNetwork;
@@ -37,6 +38,7 @@
 import org.bukkit.entity.Player;
 
 import java.lang.reflect.InvocationTargetException;
+import java.util.Locale;
 
 
 /**
@@ -144,6 +146,17 @@ public static void displayTitle(Player player, int fadeIn, int stay, int fadeOut
      */
     public static void displayTitle(Player player, int fadeIn, int stay, int fadeOut, RawText title, RawText subtitle)
     {
+        Locale playerLocale = null;
+        
+        if(title != null || subtitle != null)
+            playerLocale = I18n.getPlayerLocale(player);
+        
+        if(title != null && title.getLocale() != null)
+            title.locale(playerLocale);
+        
+        if(subtitle != null && subtitle.getLocale() != null)
+            subtitle.locale(playerLocale);
+        
         displayRawTitle(
                 player, fadeIn, stay, fadeOut,
                 title != null ? title.toJSONString() : "{\"text\": \"\"}",