Add javadoc to most of the config classes (#3)

src/main/java/xyz/alexcrea/cuanvil/gui/config/AbstractEnchantConfigGui.java

@@ -1,6 +1,7 @@
 package xyz.alexcrea.cuanvil.gui.config;
 
 import com.github.stefvanschie.inventoryframework.gui.GuiItem;
+import com.github.stefvanschie.inventoryframework.gui.type.util.Gui;
 import com.github.stefvanschie.inventoryframework.pane.Orientable;
 import com.github.stefvanschie.inventoryframework.pane.OutlinePane;
 import com.github.stefvanschie.inventoryframework.pane.Pane;
@@ -19,16 +20,40 @@ import java.util.Arrays;
 import java.util.Comparator;
 import java.util.List;
 
+/**
+ * Abstract Global Config gui for enchantment setting configuration.
+ * @param <T> Type of the factory of the type of setting the gui should edit.
+ */
 public abstract class AbstractEnchantConfigGui<T extends AbstractSettingGui.SettingGuiFactory> extends ValueUpdatableGui {
 
     private final static Material SECONDARY_BACKGROUND_MATERIAL = Material.BLACK_STAINED_GLASS_PANE;
 
-    protected AbstractEnchantConfigGui(String title){
+    private final Gui backGui;
+
+    /**
+     * Constructor for a gui displaying available enchantment to edit a enchantment setting.
+     * @param title Title of the gui.
+     * @param backGui Gui to go back on click on the "back" button.
+     */
+    protected AbstractEnchantConfigGui(String title, Gui backGui){
         super(6, title, CustomAnvil.instance);
+        this.backGui = backGui;
+    }
+    /**
+     * Constructor for a gui displaying available enchantment to edit a enchantment setting.
+     * @param title Title of the gui.
+     */
+    protected AbstractEnchantConfigGui(String title){
+        this(title, MainConfigGui.INSTANCE);
     }
 
-    PatternPane backItems;
+    PatternPane backgroundItems;
     OutlinePane filledEnchant;
+
+    // Why is called like it is rn
+    /**
+     * Initialise value updatable gui pattern
+      */
     protected void init(){
         // Back item panel
         Pattern pattern = new Pattern(
@@ -39,25 +64,29 @@ public abstract class AbstractEnchantConfigGui<T extends AbstractSettingGui.Sett
                 "000000000",
                 "B11111111"
         );
-        backItems = new PatternPane(0, 0, 9, 6, Pane.Priority.LOW, pattern);
+        this.backgroundItems = new PatternPane(0, 0, 9, 6, Pane.Priority.LOW, pattern);
-        addPane(backItems);
+        addPane(this.backgroundItems);
 
-        GuiGlobalItems.addBackItem(backItems, MainConfigGui.INSTANCE);
+        GuiGlobalItems.addBackItem(this.backgroundItems, this.backGui);
 
-        GuiGlobalItems.addBackgroundItem(backItems);
+        GuiGlobalItems.addBackgroundItem(this.backgroundItems);
-        backItems.bindItem('1', GuiGlobalItems.backgroundItem(SECONDARY_BACKGROUND_MATERIAL));
+        this.backgroundItems.bindItem('1', GuiGlobalItems.backgroundItem(SECONDARY_BACKGROUND_MATERIAL));
 
         // enchant item panel
-        filledEnchant = new OutlinePane(0, 0, 9, 5);
+        this.filledEnchant = new OutlinePane(0, 0, 9, 5);
-        filledEnchant.align(OutlinePane.Alignment.BEGIN);
+        this.filledEnchant.align(OutlinePane.Alignment.BEGIN);
-        filledEnchant.setOrientation(Orientable.Orientation.HORIZONTAL);
+        this.filledEnchant.setOrientation(Orientable.Orientation.HORIZONTAL);
-        addPane(filledEnchant);
+        addPane(this.filledEnchant);
 
         prepareValues();
         updateGuiValues();
     }
 
     private List<T> bookItemFactoryList;
+
+    /**
+     * Prepare enchantment config gui displayed items factory.
+     */
     protected void prepareValues(){
         bookItemFactoryList = new ArrayList<>();
 

src/main/java/xyz/alexcrea/cuanvil/gui/config/BasicConfigGui.java

@@ -19,6 +19,9 @@ import xyz.alexcrea.cuanvil.gui.util.GuiGlobalItems;
 
 import java.util.Collections;
 
+/**
+ * Global config to edit basic basic settings.
+ */
 public class BasicConfigGui extends ValueUpdatableGui {
 
     public final static BasicConfigGui INSTANCE = new BasicConfigGui();
@@ -27,12 +30,18 @@ public class BasicConfigGui extends ValueUpdatableGui {
         INSTANCE.init();
     }
 
+    /**
+     * Constructor of this Global gui for basic settings.
+     */
     private BasicConfigGui(){
         super(3, "\u00A78Basic Config", CustomAnvil.instance);
-
     }
 
     PatternPane pane;
+
+    /**
+     * Initialise Basic gui
+     */
     private void init(){
         Pattern pattern = new Pattern(
                 "000000000",
@@ -58,6 +67,9 @@ public class BasicConfigGui extends ValueUpdatableGui {
     private IntSettingsGui.IntSettingFactory itemRenameCost;
     private IntSettingsGui.IntSettingFactory sacrificeIllegalEnchantCost;
 
+    /**
+     * Prepare basic gui displayed items factory and static items..
+     */
     protected void prepareValues(){
         // limit repair item
         this.limitRepairFactory = BoolSettingsGui.boolFactory("\u00A78Limit Repair Cost ?",this,

src/main/java/xyz/alexcrea/cuanvil/gui/config/EnchantCostConfigGui.java

@@ -10,11 +10,14 @@ import xyz.alexcrea.cuanvil.enchant.EnchantmentProperties;
 import xyz.alexcrea.cuanvil.enchant.EnchantmentRarity;
 import xyz.alexcrea.cuanvil.gui.config.settings.EnchantCostSettingsGui;
 import xyz.alexcrea.cuanvil.gui.util.GuiGlobalItems;
-import xyz.alexcrea.cuanvil.util.StringUtil;
+import xyz.alexcrea.cuanvil.util.CasedStringUtil;
 
 import java.util.Arrays;
 import java.util.Locale;
 
+/**
+ * Global Config gui for enchantment cost settings.
+ */
 public class EnchantCostConfigGui extends AbstractEnchantConfigGui<EnchantCostSettingsGui.EnchantCostSettingFactory> {
 
     private final static String SECTION_NAME = "enchant_values";
@@ -25,6 +28,9 @@ public class EnchantCostConfigGui extends AbstractEnchantConfigGui<EnchantCostSe
         INSTANCE.init();
     }
 
+    /**
+     * Constructor of this Global gui for enchantment cost settings.
+     */
     private EnchantCostConfigGui() {
         super("\u00A78Enchantment Level Limit");
 
@@ -33,7 +39,7 @@ public class EnchantCostConfigGui extends AbstractEnchantConfigGui<EnchantCostSe
     @Override
     public EnchantCostSettingsGui.EnchantCostSettingFactory getFactoryFromEnchant(Enchantment enchant) {
         String key = enchant.getKey().getKey().toLowerCase(Locale.ENGLISH);
-        String prettyKey = StringUtil.snakeToUpperSpacedCase(key);
+        String prettyKey = CasedStringUtil.snakeToUpperSpacedCase(key);
 
         // try to find rarity. default to 0 if not found
         EnchantmentRarity rarity = EnchantmentRarity.NO_RARITY;
@@ -41,7 +47,7 @@ public class EnchantCostConfigGui extends AbstractEnchantConfigGui<EnchantCostSe
             rarity = EnchantmentProperties.valueOf(key.toUpperCase(Locale.ENGLISH)).getRarity();
         }catch (IllegalArgumentException ignored){}
 
-        return EnchantCostSettingsGui.enchFactory(prettyKey+" Level Cost", this,
+        return EnchantCostSettingsGui.enchantCostFactory(prettyKey+" Level Cost", this,
                 SECTION_NAME+'.'+key, ConfigHolder.DEFAULT_CONFIG, 0, 255,
                 rarity.getItemValue(), rarity.getBookValue(),
                 1, 10, 50);

src/main/java/xyz/alexcrea/cuanvil/gui/config/EnchantLimitConfigGui.java

@@ -6,10 +6,13 @@ import org.bukkit.enchantments.Enchantment;
 import xyz.alexcrea.cuanvil.config.ConfigHolder;
 import xyz.alexcrea.cuanvil.gui.config.settings.IntSettingsGui;
 import xyz.alexcrea.cuanvil.gui.util.GuiGlobalItems;
-import xyz.alexcrea.cuanvil.util.StringUtil;
+import xyz.alexcrea.cuanvil.util.CasedStringUtil;
 
 import java.util.Locale;
 
+/**
+ * Global Config gui for enchantment level limit settings.
+ */
 public class EnchantLimitConfigGui extends AbstractEnchantConfigGui<IntSettingsGui.IntSettingFactory> {
 
     private final static String SECTION_NAME = "enchant_limits";
@@ -20,6 +23,9 @@ public class EnchantLimitConfigGui extends AbstractEnchantConfigGui<IntSettingsG
         INSTANCE.init();
     }
 
+    /**
+     * Constructor of this Global gui for enchantment level limit settings.
+     */
     private EnchantLimitConfigGui() {
         super("\u00A78Enchantment Level Limit");
 
@@ -28,7 +34,7 @@ public class EnchantLimitConfigGui extends AbstractEnchantConfigGui<IntSettingsG
     @Override
     public IntSettingsGui.IntSettingFactory getFactoryFromEnchant(Enchantment enchant) {
         String key = enchant.getKey().getKey().toLowerCase(Locale.ROOT);
-        String prettyKey = StringUtil.snakeToUpperSpacedCase(key);
+        String prettyKey = CasedStringUtil.snakeToUpperSpacedCase(key);
 
         return IntSettingsGui.intFactory(prettyKey+" Level Limit", this,
                 SECTION_NAME+'.'+key, ConfigHolder.DEFAULT_CONFIG, 0, 255,

src/main/java/xyz/alexcrea/cuanvil/gui/config/settings/AbstractSettingGui.java

@@ -15,6 +15,9 @@ import xyz.alexcrea.cuanvil.gui.util.GuiGlobalItems;
 import java.util.Collections;
 import java.util.List;
 
+/**
+ * An instance gui used to edit a setting.
+ */
 public abstract class AbstractSettingGui extends ChestGui {
 
     // Temporary values, until I get something better.
@@ -25,17 +28,34 @@ public abstract class AbstractSettingGui extends ChestGui {
 
     private PatternPane pane;
 
+    /**
+     * Prepare necessary object for a setting gui.
+     * @param rows Number of row for this gui.
+     * @param title Title of this gui.
+     * @param parent Parent gui to go back when completed.
+     */
     public AbstractSettingGui(int rows, @NotNull TextHolder title, ValueUpdatableGui parent) {
         super(rows, title, CustomAnvil.instance);
         initBase(parent);
     }
 
+    /**
+     * Prepare necessary object for a setting gui.
+     * @param rows Number of row for this gui.
+     * @param title Title of this gui.
+     * @param parent Parent gui to go back when completed.
+     */
     public AbstractSettingGui(int rows, @NotNull String title, ValueUpdatableGui parent) {
         this(rows, StringHolder.of(title), parent);
     }
 
     protected GuiItem saveItem;
     protected GuiItem noChangeItem;
+
+    /**
+     * Initialise and prepare value for this gui.
+     * @param parent Parent gui to go back when completed.
+     */
     private void initBase(ValueUpdatableGui parent){
         Pattern pattern = getGuiPattern();
         pane = new PatternPane(0, 0, pattern.getLength(), pattern.getHeight(), pattern);
@@ -57,35 +77,76 @@ public abstract class AbstractSettingGui extends ChestGui {
         super.update();
     }
 
+    /**
+     * Get main pane for this setting gui.
+     * @return Main pattern pain of this gui.
+     */
     protected PatternPane getPane() {
         return pane;
     }
 
-    // S, b, 0 is used by: save, back, background
+    /**
+     * Used to get the gui pattern.
+     * Reserved character are:
+     * <ul>
+     * <li><b>S</b>: save setting button.</li>
+     * <li><b>B</b>: "back to previous gui" button.</li>
+     * <li><b>0</b>: default background item.</li>
+     * </ul>
+     * @return The gui's pattern.
+     */
     protected abstract Pattern getGuiPattern();
 
+    /**
+     * Called when the associated setting need to be saved.
+     * @return true if the save was successful. false otherwise
+     */
     public abstract boolean onSave();
 
+    /**
+     * If this function return true
+     * the gui assume the associated setting can be saved.
+     * @return true if there is a change to the setting. false otherwise
+     */
     public abstract boolean hadChange();
 
-
+    /**
+     * Most of the time a setting gui will be called from a global gui.
+     * <p>
+     * It is better to keep a factory that hold setting data than find what parameters to use every time.
+     */
     public abstract static class SettingGuiFactory{
         protected String configPath;
         protected ConfigHolder config;
 
+        /**
+         * Constructor for settings gui factory
+         * @param configPath Configuration path of this setting.
+         * @param config Configuration holder of this setting.
+         */
         protected SettingGuiFactory(String configPath, ConfigHolder config){
             this.configPath = configPath;
             this.config = config;
         }
 
+        /**
+         * @return Configuration path of this setting.
+         */
         public String getConfigPath() {
             return configPath;
         }
 
+        /**
+         * @return Configuration holder of this setting.
+         */
         public ConfigHolder getConfigHolder() {
             return config;
         }
 
+        /**
+         * Create a gui using setting parameters and current setting value.
+         * @return A new instance of the implemented setting gui.
+         */
         public abstract AbstractSettingGui create();
     }
 }

src/main/java/xyz/alexcrea/cuanvil/gui/config/settings/BoolSettingsGui.java

@@ -17,14 +17,22 @@ import xyz.alexcrea.cuanvil.util.MetricsUtil;
 import java.util.Collections;
 import java.util.function.Consumer;
 
+/**
+ * An instance of a gui used to edit a boolean setting.
+ */
 public class BoolSettingsGui extends AbstractSettingGui{
 
     private final BoolSettingFactory holder;
     private final boolean before;
     private boolean now;
 
+    /**
+     * Create a boolean setting config gui.
+     * @param holder Configuration factory of this setting.
+     * @param now The defined value of this setting.
+     */
     protected BoolSettingsGui(BoolSettingFactory holder, boolean now) {
-        super(3, holder.title, holder.parent);
+        super(3, holder.getTitle(), holder.parent);
         this.holder = holder;
         this.before = now;
         this.now = now;
@@ -42,7 +50,12 @@ public class BoolSettingsGui extends AbstractSettingGui{
                 "B0000000S"
         );
     }
-    GuiItem returnToDefault;
+
+    protected GuiItem returnToDefault;
+
+    /**
+     * Prepare "return to default value" gui item.
+     */
     protected void prepareReturnToDefault(){
         ItemStack item = new ItemStack(Material.COMMAND_BLOCK);
         ItemMeta meta = item.getItemMeta();
@@ -58,8 +71,10 @@ public class BoolSettingsGui extends AbstractSettingGui{
         }, CustomAnvil.instance);
     }
 
+    /**
+     * Update item using the setting value to match the new value
+     */
     protected void updateValueDisplay(){
-
         PatternPane pane = getPane();
 
         // Get displayed value for this config.
@@ -93,6 +108,9 @@ public class BoolSettingsGui extends AbstractSettingGui{
 
     }
 
+    /**
+     * @return A consumer to update the current setting's value.
+     */
     protected Consumer<InventoryClickEvent> inverseNowConsumer(){
         return event->{
             event.setCancelled(true);
@@ -118,6 +136,15 @@ public class BoolSettingsGui extends AbstractSettingGui{
         return now != before;
     }
 
+    /**
+     * Create a bool setting factory from setting's parameters.
+     * @param title The title of the gui.
+     * @param parent Parent gui to go back when completed.
+     * @param configPath Configuration path of this setting.
+     * @param config Configuration holder of this setting.
+     * @param defaultVal Default value if not found on the config.
+     * @return A factory for a boolean setting gui.
+     */
     public static BoolSettingFactory boolFactory(@NotNull String title, ValueUpdatableGui parent,
                                                  String configPath, ConfigHolder config,
                                                  boolean defaultVal){
@@ -127,11 +154,21 @@ public class BoolSettingsGui extends AbstractSettingGui{
                 defaultVal);
     }
 
-
+    /**
+     * A factory for a boolean setting gui that hold setting's information.
+     */
     public static class BoolSettingFactory extends SettingGuiFactory{
         @NotNull String title; ValueUpdatableGui parent;
         boolean defaultVal;
 
+        /**
+         * Constructor for a boolean setting gui factory.
+         * @param title The title of the gui.
+         * @param parent Parent gui to go back when completed.
+         * @param configPath Configuration path of this setting.
+         * @param config Configuration holder of this setting.
+         * @param defaultVal Default value if not found on the config.
+         */
         protected BoolSettingFactory(
                 @NotNull String title, ValueUpdatableGui parent,
                 String configPath, ConfigHolder config,
@@ -143,18 +180,24 @@ public class BoolSettingsGui extends AbstractSettingGui{
             this.defaultVal = defaultVal;
         }
 
+        /**
+         * @return Get setting's gui title.
+         */
         @NotNull
         public String getTitle() {
             return title;
         }
 
+        /**
+         * @return The configured value for the associated setting.
+         */
         public boolean getConfiguredValue(){
             return this.config.getConfig().getBoolean(this.configPath, this.defaultVal);
         }
 
         @Override
         public AbstractSettingGui create() {
-            // Get value or default
+            // Get current value or default
             boolean now = getConfiguredValue();
             // create new gui
             return new BoolSettingsGui(this, now);

src/main/java/xyz/alexcrea/cuanvil/gui/config/settings/EnchantCostSettingsGui.java

@@ -19,6 +19,10 @@ import xyz.alexcrea.cuanvil.util.MetricsUtil;
 import java.util.Arrays;
 import java.util.function.Consumer;
 
+/**
+ * An instance of a gui used to edit an enchantment cost setting.
+ * May be considered as a 2 int setting.
+ */
 public class EnchantCostSettingsGui extends IntSettingsGui {
 
     protected final static String ITEM_PATH = ".item";
@@ -27,6 +31,11 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
     private int beforeBook;
     private int nowBook;
 
+    /**
+     * Create an enchantment cost setting config gui.
+     * @param holder Configuration factory of this setting.
+     * @param nowItem The defined value of this setting item's value.
+     */
     protected EnchantCostSettingsGui(EnchantCostSettingFactory holder, int nowItem) {
         super(holder, nowItem);
 
@@ -35,6 +44,11 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
         initStaticItem();
     }
 
+    /**
+     * Initialise step items.
+     * Also bypassed init sequence to initialise books value
+     * as it used as one of the first call from the init sequence of the gui
+     */
     @Override
     protected void initStepsValue() {
         super.initStepsValue();
@@ -53,6 +67,9 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
         );
     }
 
+    /**
+     * Initialise item that should not be updated late.
+     */
     private void initStaticItem() {
         PatternPane pane = getPane();
 
@@ -166,6 +183,10 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
 
     }
 
+    /**
+     * @param planned Value to change current book cost setting to.
+     * @return A consumer to update the current book cost setting's value.
+     */
     protected Consumer<InventoryClickEvent> updateNowBookConsumer(int planned){
         return event->{
             event.setCancelled(true);
@@ -197,7 +218,24 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
         return super.hadChange() || nowBook != beforeBook;
     }
 
-    public static EnchantCostSettingFactory enchFactory(@NotNull String title, ValueUpdatableGui parent,
+    /**
+     * Create an int setting factory from setting's parameters.
+     * @param title The title of the gui.
+     * @param parent Parent gui to go back when completed.
+     * @param configPath Configuration path of this setting.
+     * @param config Configuration holder of this setting.
+     * @param min Minimum value of this setting.
+     * @param max Maximum value of this setting.
+     * @param defaultItemVal Default item value if not found on the config.
+     * @param defaultBookVal Default book value if not found on the config.
+     * @param steps List of step the value can increment/decrement.
+     *              List's size should be between 1 (included) and 3 (included).
+     *              it is visually preferable to have an odd number of step.
+     *              If step only contain 1 value, no step item should be displayed.
+     * @return A factory for an enchant cost setting gui.
+     */
+    public static EnchantCostSettingFactory enchantCostFactory(
+            @NotNull String title, ValueUpdatableGui parent,
             String configPath, ConfigHolder config,
             int min, int max, int defaultItemVal, int defaultBookVal,
             int... steps){
@@ -207,11 +245,28 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
                 min, max, defaultItemVal, defaultBookVal, steps);
     }
 
-
+    /**
+     * A factory for an enchantment cost setting gui that hold setting's information.
+     */
     public static class EnchantCostSettingFactory extends IntSettingsGui.IntSettingFactory {
 
         int defaultBookVal;
 
+        /**
+         * Constructor for an enchantment cost setting gui factory.
+         * @param title The title of the gui.
+         * @param parent Parent gui to go back when completed.
+         * @param configPath Configuration path of this setting.
+         * @param config Configuration holder of this setting.
+         * @param min Minimum value of this setting.
+         * @param max Maximum value of this setting.
+         * @param defaultItemVal Default item value if not found on the config.
+         * @param defaultBookVal Default book value if not found on the config.
+         * @param steps List of step the value can increment/decrement.
+         *              List's size should be between 1 (included) and 3 (included).
+         *              it is visually preferable to have an odd number of step.
+         *              If step only contain 1 value, no step item should be displayed.
+         */
         protected EnchantCostSettingFactory(
                 @NotNull String title, ValueUpdatableGui parent,
                 String configPath, ConfigHolder config,
@@ -224,16 +279,17 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
             this.defaultBookVal = defaultBookVal;
         }
 
-        @NotNull
+        /**
-        public String getTitle() {
+         * @return The configured value for the enchant setting item value.
-            return title;
+         */
-        }
-
         @Override
         public int getConfiguredValue() {
             return this.config.getConfig().getInt(this.configPath+ITEM_PATH, this.defaultVal);
         }
 
+        /**
+         * @return The configured value for the enchant setting book value.
+         */
         public int getConfiguredBookValue(){
             return this.config.getConfig().getInt(this.configPath+BOOK_PATH, this.defaultBookVal);
         }
@@ -249,4 +305,3 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
     }
 
 }
-

src/main/java/xyz/alexcrea/cuanvil/gui/config/settings/IntSettingsGui.java

@@ -19,6 +19,9 @@ import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
 
+/**
+ * An instance of a gui used to edit an int setting.
+ */
 public class IntSettingsGui extends AbstractSettingGui{
 
     protected final IntSettingFactory holder;
@@ -26,8 +29,13 @@ public class IntSettingsGui extends AbstractSettingGui{
     protected int now;
     protected int step;
 
+    /**
+     * Create an int setting config gui.
+     * @param holder Configuration factory of this setting.
+     * @param now The defined value of this setting.
+     */
     protected IntSettingsGui(IntSettingFactory holder, int now) {
-        super(3, holder.title, holder.parent);
+        super(3, holder.getTitle(), holder.parent);
         assert holder.steps.length > 0 && holder.steps.length <= 9;
         this.holder = holder;
         this.before = now;
@@ -50,6 +58,9 @@ public class IntSettingsGui extends AbstractSettingGui{
     }
 
     protected GuiItem returnToDefault;
+    /**
+     * Prepare "return to default value" gui item.
+     */
     protected void prepareReturnToDefault(){
         ItemStack item = new ItemStack(Material.COMMAND_BLOCK);
         ItemMeta meta = item.getItemMeta();
@@ -65,6 +76,9 @@ public class IntSettingsGui extends AbstractSettingGui{
             }, CustomAnvil.instance);
     }
 
+    /**
+     * Update item using the setting value to match the new value.
+     */
     protected void updateValueDisplay(){
 
         PatternPane pane = getPane();
@@ -123,6 +137,10 @@ public class IntSettingsGui extends AbstractSettingGui{
 
     }
 
+    /**
+     * @param planned Value to change current setting to.
+     * @return A consumer to update the current setting's value.
+     */
     protected Consumer<InventoryClickEvent> updateNowConsumer(int planned){
         return event->{
             event.setCancelled(true);
@@ -132,6 +150,9 @@ public class IntSettingsGui extends AbstractSettingGui{
         };
     }
 
+    /**
+     * Initialise step items.
+     */
     protected void initStepsValue(){
         // Put background glass on the background of 'a' to 'b'
         GuiItem background = GuiGlobalItems.backgroundItem();
@@ -143,11 +164,15 @@ public class IntSettingsGui extends AbstractSettingGui{
         // Then update legit step values
         updateStepValue();
     }
+
+    /**
+     * Update steps items value.
+     */
     protected void updateStepValue(){
         if(holder.steps.length <= 1) return;
         // We assume steps have a length of 2k+1 cause its more pretty
         char val = getMidStepChar();
-        // Offset
+        // Offset to start (not the best way to do it)
         val -= (char) ((holder.steps.length-1)/2);
 
         // Then place items
@@ -158,10 +183,19 @@ public class IntSettingsGui extends AbstractSettingGui{
 
     }
 
+    /**
+     * Step use lower case character from 'a' to a certain char.
+     * @return The middle value of the character set for steps.
+     */
     protected char getMidStepChar(){
         return 'e';
     }
 
+    /**
+     * Create a step item from a step value.
+     * @param stepIndex the index of the step item.
+     * @return A step item corresponding to its index value.
+     */
     protected GuiItem stepGuiItem(int stepIndex){
         int stepValue = holder.steps[stepIndex];
 
@@ -194,6 +228,10 @@ public class IntSettingsGui extends AbstractSettingGui{
         return new GuiItem(item, clickEvent, CustomAnvil.instance);
     }
 
+    /**
+     * @param stepValue Value to change current step to.
+     * @return A consumer to update the current step of this setting.
+     */
     protected Consumer<InventoryClickEvent> updateStepValue(int stepValue){
         return event -> {
             event.setCancelled(true);
@@ -220,6 +258,21 @@ public class IntSettingsGui extends AbstractSettingGui{
         return now != before;
     }
 
+    /**
+     * Create an int setting factory from setting's parameters.
+     * @param title The title of the gui.
+     * @param parent Parent gui to go back when completed.
+     * @param configPath Configuration path of this setting.
+     * @param config Configuration holder of this setting.
+     * @param min Minimum value of this setting.
+     * @param max Maximum value of this setting.
+     * @param defaultVal Default value if not found on the config.
+     * @param steps List of step the value can increment/decrement.
+     *              List's size should be between 1 (included) and 5 (included).
+     *              it is visually preferable to have an odd number of step.
+     *              If step only contain 1 value, no step item should be displayed.
+     * @return A factory for an int setting gui.
+     */
     public static IntSettingFactory intFactory(@NotNull String title, ValueUpdatableGui parent,
                                                String configPath, ConfigHolder config,
                                                int min, int max, int defaultVal, int... steps){
@@ -229,11 +282,27 @@ public class IntSettingsGui extends AbstractSettingGui{
                 min, max, defaultVal, steps);
     }
 
-
+    /**
+     * A factory for an int setting gui that hold setting's information.
+     */
     public static class IntSettingFactory extends SettingGuiFactory{
         @NotNull String title; ValueUpdatableGui parent;
         int min; int max; int defaultVal; int[] steps;
 
+        /**
+         * Constructor for an int setting gui factory.
+         * @param title The title of the gui.
+         * @param parent Parent gui to go back when completed.
+         * @param configPath Configuration path of this setting.
+         * @param config Configuration holder of this setting.
+         * @param min Minimum value of this setting.
+         * @param max Maximum value of this setting.
+         * @param defaultVal Default value if not found on the config.
+         * @param steps List of step the value can increment/decrement.
+         *              List's size should be between 1 (included) and 5 (included).
+         *              it is visually preferable to have an odd number of step.
+         *              If step only contain 1 value, no step item should be displayed.
+         */
         protected IntSettingFactory(
                 @NotNull String title, ValueUpdatableGui parent,
                 String configPath, ConfigHolder config,
@@ -247,11 +316,17 @@ public class IntSettingsGui extends AbstractSettingGui{
             this.steps = steps;
         }
 
+        /**
+         * @return Get setting's gui title
+         */
         @NotNull
         public String getTitle() {
             return title;
         }
 
+        /**
+         * @return The configured value for the associated setting.
+         */
         public int getConfiguredValue(){
             return this.config.getConfig().getInt(this.configPath, this.defaultVal);
         }

src/main/java/xyz/alexcrea/cuanvil/gui/util/GuiGlobalActions.java

@@ -12,12 +12,27 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.util.function.Consumer;
 
+/**
+ * A utility class to store function that create generic GUI actions.
+ */
 public class GuiGlobalActions {
 
     public final static String NO_EDIT_PERM = "§cYou do not have permission to edit the config";
+
+    /**
+     * A Consumer that should be used if the item goal is to do nothing on click.
+     */
     public final static Consumer<InventoryClickEvent> stayInPlace = (event) -> event.setCancelled(true);
 
-
+    /**
+     * Create a consumer to create and open a new GUI.
+     * Used with InventoryClickEvent as the consumer argument as it is planned to be used on click on an GuiItem.
+     * @param clazz The class of the gui to open.
+     *              It is assumed this class contain a constructor requiring arguments of argClass in the same order as argClass array.
+     * @param argClass Classes of the argument that will be passed to the constructor of the GUI class.
+     * @param args Arguments for the constructor the GUI class.
+     * @return A consumer to create a new gui and open it.
+     */
     public static @NotNull Consumer<InventoryClickEvent> openGuiAction(
             @NotNull Class<? extends Gui> clazz,
             @NotNull Class<?>[] argClass,
@@ -44,11 +59,24 @@ public class GuiGlobalActions {
         };
     }
 
+    /**
+     * Create a consumer to create and open a new GUI.
+     * Used with InventoryClickEvent as the consumer argument as it is planned to be used on click on an GuiItem.
+     * @param clazz The class of the gui to open.
+     *              It is assumed this class contain a constructor with no argument.
+     * @return A consumer to create a new gui and open it.
+     */
     public static @NotNull Consumer<InventoryClickEvent> openGuiAction(
             @NotNull Class<? extends Gui> clazz){
         return openGuiAction(clazz, new Class<?>[0]);
     }
 
+    /**
+     * Create a consumer to open a setting gui from a setting GUI factory.
+     * Used with InventoryClickEvent as the consumer argument as it is planned to be used on click on an GuiItem.
+     * @param factory The setting gui factory.
+     * @return A consumer to create and open a new setting GUI.
+     */
     public static @NotNull Consumer<InventoryClickEvent> openSettingGuiAction(AbstractSettingGui.SettingGuiFactory factory){
         return event -> {
             event.setCancelled(true);
@@ -57,6 +85,12 @@ public class GuiGlobalActions {
         };
     }
 
+    /**
+     * Create a consumer to open a global GUI.
+     * Used with InventoryClickEvent as the consumer argument as it is planned to be used on click on an GuiItem.
+     * @param goal The gui to open when consumer is run.
+     * @return A consumer to open a global GUI.
+     */
     public static @NotNull Consumer<InventoryClickEvent> openGuiAction(@NotNull Gui goal) {
         return event -> {
             HumanEntity player = event.getWhoClicked();
@@ -71,6 +105,14 @@ public class GuiGlobalActions {
         };
     }
 
+    /**
+     * Create a consumer to update and open an updatable GUI.
+     * Used with InventoryClickEvent as the consumer argument as it is planned to be used on click on an GuiItem.
+     * This consumer check if the player who interacted with the item have the permission to save before saving.
+     * @param setting The gui that contain the modified setting.
+     * @param goal The gui to update and open when consumer is run.
+     * @return A consumer to open a global GUI.
+     */
     public static @NotNull Consumer<InventoryClickEvent> saveSettingAction(
             @NotNull AbstractSettingGui setting,
             @NotNull ValueUpdatableGui goal) {
@@ -86,12 +128,13 @@ public class GuiGlobalActions {
 
             // Save setting
             if(!setting.onSave()){
-                player.sendMessage("\u00A7cSomething wrong happen while saving the change of value.");
+                player.sendMessage("\u00A7cSomething went wrong while saving the change of value.");
             }
-            // Update gui for the one who have it open
+            // Update gui for those who have it open.
             goal.updateGuiValues();
             // Then show
             goal.show(player);
         };
     }
+
 }

src/main/java/xyz/alexcrea/cuanvil/gui/util/GuiGlobalItems.java

@@ -12,36 +12,63 @@ import xyz.alexcrea.cuanvil.gui.ValueUpdatableGui;
 import xyz.alexcrea.cuanvil.gui.config.settings.AbstractSettingGui;
 import xyz.alexcrea.cuanvil.gui.config.settings.BoolSettingsGui;
 import xyz.alexcrea.cuanvil.gui.config.settings.IntSettingsGui;
-import xyz.alexcrea.cuanvil.util.StringUtil;
+import xyz.alexcrea.cuanvil.util.CasedStringUtil;
 
 import java.util.Collections;
 
-// maybe use builder patern ?
+/**
+ * A utility class to store function that create generic GUI item.
+ */
 public class GuiGlobalItems {
 
-    // return
+    // statically create default back itemstack
-    public static GuiItem goToGuiItem(@NotNull ItemStack item, @NotNull Gui goal){
+    private static final ItemStack BACK_ITEM;
-        return new GuiItem(item, GuiGlobalActions.openGuiAction(goal), CustomAnvil.instance);
-    }
-
-    // statically create back itemstack
-    private static final ItemStack BACK_ITEM = new ItemStack(Material.BARRIER);
     static {
-        // todo add what I need to add to the back item
+        BACK_ITEM = new ItemStack(Material.BARRIER);
         ItemMeta meta = BACK_ITEM.getItemMeta();
         meta.setDisplayName("\u00A7cBack");
         BACK_ITEM.setItemMeta(meta);
     }
+
+    /**
+     * Create a GuiItem that open the given GUi.
+     * @param item The item to display in the GUI.
+     * @param goal The GUI to open on click.
+     * @return An GuiItem that open goal on click.
+     */
+    public static GuiItem goToGuiItem(@NotNull ItemStack item, @NotNull Gui goal){
+        return new GuiItem(item, GuiGlobalActions.openGuiAction(goal), CustomAnvil.instance);
+    }
+
+    /**
+     * Create back button item from default back GuiItem.
+     * The back item will open the goal inventory when clicked.
+     * @param goal The GUI to go back to.
+     * @return An GuiItem that go back to goal on click.
+     */
     public static GuiItem backItem(@NotNull Gui goal){
-        // simple go back item
         return goToGuiItem(BACK_ITEM, goal);
     }
+
+    /**
+     * Add default back item to a GUI pattern with the reserved character key <strong>B</strong>.
+     * The back item will open the target inventory when clicked.
+     * @param target The pattern to add the back item.
+     * @param goal The GUI to go back to.
+     */
     public static void addBackItem(@NotNull PatternPane target,
                                    @NotNull Gui goal){
         target.bindItem('B', backItem(goal));
     }
 
     private static final Material DEFAULT_BACKGROUND_MAT = Material.LIGHT_GRAY_STAINED_GLASS_PANE;
+
+    /**
+     * Get a background item with backgroundMat as the displayed material.
+     * A background item is a GuiItem that do nothing when interacted with and have an empty name.
+     * @param backgroundMat The material to which the background item should be made of.
+     * @return A background item with backgroundMat as material.
+     */
     public static GuiItem backgroundItem(Material backgroundMat){
         ItemStack item = new ItemStack(backgroundMat);
         ItemMeta meta = item.getItemMeta();
@@ -49,19 +76,46 @@ public class GuiGlobalItems {
         item.setItemMeta(meta);
         return new GuiItem(item, GuiGlobalActions.stayInPlace, CustomAnvil.instance);
     }
+    /**
+     * Get default background GuiItem.
+     * A background item is a GuiItem that do nothing when interacted with and have an empty name.
+     * @return A new instance of the default background item.
+     */
     public static GuiItem backgroundItem(){
         return backgroundItem(DEFAULT_BACKGROUND_MAT);
     }
+
+    /**
+     * Add default background item to a GUI pattern with the reserved character key <strong>0</strong>.
+     * A background item is a GuiItem that do nothing when interacted with and have an empty name.
+     * @param target The pattern to add the background item.
+     * @param backgroundMat The material of the background item.
+     */
     public static void addBackgroundItem(@NotNull PatternPane target,
                                          @NotNull Material backgroundMat){
         target.bindItem('0', backgroundItem(backgroundMat));
     }
+
+    /**
+     * Add default background item to a GUI pattern with the reserved character key <strong>0</strong>.
+     * A background item is a GuiItem that do nothing when interacted with and have an empty name.
+     * @param target The pattern to add the background item.
+     */
     public static void addBackgroundItem(@NotNull PatternPane target){
         addBackgroundItem(target, DEFAULT_BACKGROUND_MAT);
     }
 
     private static final Material DEFAULT_SAVE_ITEM = Material.LIME_DYE;
     private static final Material DEFAULT_NO_CHANGE_ITEM = Material.GRAY_DYE;
+
+    /**
+     * Create a new save setting GuiItem.
+     * A save setting item is a GuiItem that save a changed setting when clicked.
+     * This item also check if the player who interacted with the item have the permission to save before saving.
+     * @param setting The setting to change.
+     * @param goal Parent GUI of this setting GUI. as setting will be change the display of goal GUI will be updated.
+     * @return A save setting item.
+     */
     public static GuiItem saveItem(
             @NotNull AbstractSettingGui setting,
             @NotNull ValueUpdatableGui goal){
@@ -75,6 +129,7 @@ public class GuiGlobalItems {
                 CustomAnvil.instance);
     }
 
+    // Create static non change item
     private static final GuiItem NO_CHANGE_ITEM;
     static {
         ItemStack item = new ItemStack(DEFAULT_NO_CHANGE_ITEM);
@@ -84,10 +139,22 @@ public class GuiGlobalItems {
         NO_CHANGE_ITEM = new GuiItem(item,GuiGlobalActions.stayInPlace, CustomAnvil.instance);
     }
 
+    /**
+     * Get the global "no change" GuiItem.
+     * The no change item do nothing when interacted, only the title is change to show there is no change.
+     * @return The global "no change" item.
+     */
     public static GuiItem noChangeItem(){
         return NO_CHANGE_ITEM;
     }
 
+    /**
+     * Create a new "create and go to the setting GUI" GuiItem.
+     * This item will create and open a setting GUI from the factory.
+     * @param item The item that will be displayed.
+     * @param factory The setting's GUI factory.
+     * @return A formatted GuiItem that will create and open a GUI for the setting.
+     */
     public static GuiItem openSettingGuiItem(
             @NotNull ItemStack item,
             @NotNull AbstractSettingGui.SettingGuiFactory factory
@@ -95,8 +162,17 @@ public class GuiGlobalItems {
         return new GuiItem(item, GuiGlobalActions.openSettingGuiAction(factory), CustomAnvil.instance);
     }
 
+    // Prefix of the one line lore that will be added to setting's item.
     public static final String SETTING_ITEM_LORE_PREFIX = "\u00A77value: ";
 
+    /**
+     * Create a new Boolean setting GuiItem.
+     * This item will create and open a boolean setting GUI from the factory.
+     * The item will have its value written in the lore part of the item.
+     * @param factory The setting's GUI factory.
+     * @param name Name of the item.
+     * @return A formatted GuiItem that will create and open a GUI for the boolean setting.
+     */
     public static GuiItem boolSettingGuiItem(
             @NotNull BoolSettingsGui.BoolSettingFactory factory,
             @NotNull String name
@@ -118,14 +194,30 @@ public class GuiGlobalItems {
         return createGuiItemFromProperties(factory, itemMat, itemName, value);
     }
 
+    /**
+     * Create a new boolean setting GuiItem.
+     * This item will create and open a boolean setting GUI from the factory.
+     * The item will have its value written in the lore part of the item.
+     * Item's name will be the factory set title.
+     * @param factory The setting's GUI factory.
+     * @return A formatted GuiItem that will create and open a GUI for the boolean setting.
+     */
     public static GuiItem boolSettingGuiItem(
             @NotNull BoolSettingsGui.BoolSettingFactory factory
     ){
         String configPath = getConfigNameFromPath(factory.getConfigPath());
-        return boolSettingGuiItem(factory, StringUtil.snakeToUpperSpacedCase(configPath));
+        return boolSettingGuiItem(factory, CasedStringUtil.snakeToUpperSpacedCase(configPath));
     }
 
-
+    /**
+     * Create a new int setting GuiItem.
+     * This item will create and open an int setting GUI from the factory.
+     * The item will have its value written in the lore part of the item.
+     * @param factory The setting's GUI factory.
+     * @param itemMat Displayed material of the item.
+     * @param name Name of the item.
+     * @return A formatted GuiItem that will create and open a GUI for the int setting.
+     */
     public static GuiItem intSettingGuiItem(
             @NotNull IntSettingsGui.IntSettingFactory factory,
             @NotNull Material itemMat,
@@ -138,21 +230,39 @@ public class GuiGlobalItems {
         return createGuiItemFromProperties(factory, itemMat, itemName, value);
     }
 
-
+    /**
+     * Create a new int setting GuiItem.
+     * This item will create and open an int setting GUI from the factory.
+     * The item will have its value written in the lore part of the item.
+     * Item's name will be the factory set title.
+     * @param factory The setting's GUI factory.
+     * @param itemMat Displayed material of the item.
+     * @return A formatted GuiItem that will create and open a GUI for the int setting.
+     */
     public static GuiItem intSettingGuiItem(
             @NotNull IntSettingsGui.IntSettingFactory factory,
             @NotNull Material itemMat
     ){
         String configPath = getConfigNameFromPath(factory.getConfigPath());
-        return intSettingGuiItem(factory, itemMat, StringUtil.snakeToUpperSpacedCase(configPath));
+        return intSettingGuiItem(factory, itemMat, CasedStringUtil.snakeToUpperSpacedCase(configPath));
     }
+
+    /**
+     * Create an arbitrary GuiItem from a unique setting and item's property.
+     * @param factory The setting's GUI factory.
+     * @param itemMat Displayed material of the item.
+     * @param itemName Name of the item.
+     * @param value Value of the setting when the item is created.
+     *              Will not update automatically, if the setting's value change, the item need to be created again.
+     * @return A formatted GuiItem that will create and open a GUI for the setting.
+     */
     private static GuiItem createGuiItemFromProperties(
             @NotNull AbstractSettingGui.SettingGuiFactory factory,
             @NotNull Material itemMat,
             @NotNull StringBuilder itemName,
             @NotNull Object value
     ){
-        // Create item
+        // Create & initialise item
         ItemStack item = new ItemStack(itemMat);
         ItemMeta itemMeta = item.getItemMeta();
 
@@ -160,13 +270,20 @@ public class GuiGlobalItems {
         itemMeta.setLore(Collections.singletonList(SETTING_ITEM_LORE_PREFIX+value));
 
         item.setItemMeta(itemMeta);
+        // Create GuiItem
         return openSettingGuiItem(item, factory);
     }
 
+    /**
+     * Get the setting name from the setting path.
+     * For example: "gui.command.name" will return "name".
+     * @param path The setting's path.
+     * @return The setting's name.
+     */
     public static String getConfigNameFromPath(String path){
+        // Get index of first dot
         int indexOfDot = path.indexOf(".");
-        //if(indexOfDot == -1) return path;
+        // when indexOfDot == -1 (not fond), it is implied that indexOfDot+1 = 0. substring will keep the full path as expected
-        // indexOfDot == -1 (not fond) imply indexOfDot+1 = 0. substring will keep the full path as expected
         return path.substring(indexOfDot+1);
     }
 

src/main/java/xyz/alexcrea/cuanvil/util/CasedStringUtil.java

@@ -1,8 +1,18 @@
 package xyz.alexcrea.cuanvil.util;
 
-public class StringUtil {
+/**
+ * An incomplete cased string util
+ */
+public class CasedStringUtil {
 
-    //we assume snake_cased_string is in snake case
+    /**
+     * Transform a snake cased string to an upper-cased spaced string.
+     * <p>
+     * for example: if we use  "hello_world" as an input this function will return "Hello World".
+     * @param snake_cased_string The input string.
+     * This argument NEED to be a snake cased string, or it will not work
+     * @return The input as an upper-cased string with space separator.
+     */
     public static String snakeToUpperSpacedCase(String snake_cased_string){
         if(snake_cased_string.contentEquals("")) return "";
         StringBuilder result = new StringBuilder();