/
RecipeGuiLogic.java
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/
RecipeGuiLogic.java
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package mezz.jei.gui.recipes;
import javax.annotation.Nonnull;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Stack;
import com.google.common.collect.ImmutableList;
import mezz.jei.api.IRecipeRegistry;
import mezz.jei.api.recipe.IFocus;
import mezz.jei.api.recipe.IRecipeCategory;
import mezz.jei.api.recipe.IRecipeWrapper;
import mezz.jei.util.MathUtil;
import net.minecraft.client.Minecraft;
import net.minecraft.inventory.Container;
import net.minecraft.item.ItemStack;
public class RecipeGuiLogic implements IRecipeGuiLogic {
private static class State {
@Nonnull
public final IFocus focus;
@Nonnull
public final ImmutableList<IRecipeCategory> recipeCategories;
public int recipeCategoryIndex;
public int pageIndex;
public int recipesPerPage;
public State(IFocus focus, List<IRecipeCategory> recipeCategories, int recipeCategoryIndex, int pageIndex) {
if (recipeCategories.isEmpty()) {
throw new IllegalStateException("Recipe categories cannot be empty.");
}
this.focus = focus;
this.recipeCategories = ImmutableList.copyOf(recipeCategories);
this.recipeCategoryIndex = recipeCategoryIndex;
this.pageIndex = pageIndex;
}
}
@Nonnull
private final IRecipeRegistry recipeRegistry;
@Nonnull
private final IRecipeLogicStateListener stateListener;
private boolean initialState = true;
@Nonnull
private State state;
@Nonnull
private final Stack<State> history = new Stack<State>();
/**
* List of recipes for the currently selected recipeClass
*/
private List<IRecipeWrapper> recipes = Collections.emptyList();
public RecipeGuiLogic(IRecipeRegistry recipeRegistry, IRecipeLogicStateListener stateListener) {
this.recipeRegistry = recipeRegistry;
this.stateListener = stateListener;
IFocus focus = recipeRegistry.createFocus(IFocus.Mode.NONE, null);
List<IRecipeCategory> recipeCategories = recipeRegistry.getRecipeCategories();
this.state = new State(focus, recipeCategories, 0, 0);
}
@Override
public <V> boolean setFocus(IFocus<V> focus) {
final List<IRecipeCategory> recipeCategories = recipeRegistry.getRecipeCategories(focus);
if (recipeCategories.isEmpty()) {
return false;
}
final int recipeCategoryIndex = getRecipeCategoryIndex(recipeCategories);
if (!initialState) {
history.push(this.state);
}
final State state = new State(focus, recipeCategories, recipeCategoryIndex, 0);
setState(state);
return true;
}
@Override
public boolean back() {
if (history.empty()) {
return false;
}
final State state = history.pop();
setState(state);
return true;
}
@Override
public void clearHistory() {
while (!history.empty()) {
history.pop();
}
}
private void setState(State state) {
this.state = state;
this.initialState = false;
updateRecipes();
stateListener.onStateChange();
}
private int getRecipeCategoryIndex(List<IRecipeCategory> recipeCategories) {
final Container container = Minecraft.getMinecraft().thePlayer.openContainer;
if (container == null) {
return 0;
}
for (int i = 0; i < recipeCategories.size(); i++) {
IRecipeCategory recipeCategory = recipeCategories.get(i);
if (recipeRegistry.getRecipeTransferHandler(container, recipeCategory) != null) {
return i;
}
}
return 0;
}
@Override
public boolean setCategoryFocus() {
IRecipeCategory recipeCategory = getSelectedRecipeCategory();
if (!initialState) {
history.push(this.state);
}
final List<IRecipeCategory> recipeCategories = recipeRegistry.getRecipeCategories();
final int recipeCategoryIndex = recipeCategories.indexOf(recipeCategory);
IFocus<Object> focus = recipeRegistry.createFocus(IFocus.Mode.NONE, null);
final State state = new State(focus, recipeCategories, recipeCategoryIndex, 0);
setState(state);
return true;
}
@Override
public boolean setCategoryFocus(List<String> recipeCategoryUids) {
List<IRecipeCategory> recipeCategories = recipeRegistry.getRecipeCategories(recipeCategoryUids);
if (recipeCategories.isEmpty()) {
return false;
}
if (!initialState) {
history.push(this.state);
}
IFocus<Object> focus = recipeRegistry.createFocus(IFocus.Mode.NONE, null);
final State state = new State(focus, recipeCategories, 0, 0);
setState(state);
return true;
}
@Override
public IFocus getFocus() {
return state.focus;
}
@Override
public List<ItemStack> getRecipeCategoryCraftingItems() {
IRecipeCategory category = getSelectedRecipeCategory();
IFocus focus = getFocus();
return recipeRegistry.getCraftingItems(category, focus);
}
@Override
public List<ItemStack> getRecipeCategoryCraftingItems(IRecipeCategory recipeCategory) {
return recipeRegistry.getCraftingItems(recipeCategory, getFocus());
}
@Override
public void setRecipesPerPage(int recipesPerPage) {
if (state.recipesPerPage != recipesPerPage) {
int recipeIndex = state.pageIndex * state.recipesPerPage;
state.pageIndex = recipeIndex / recipesPerPage;
state.recipesPerPage = recipesPerPage;
updateRecipes();
}
}
private void updateRecipes() {
final IRecipeCategory recipeCategory = getSelectedRecipeCategory();
IFocus<?> focus = state.focus;
//noinspection unchecked
this.recipes = recipeRegistry.getRecipeWrappers(recipeCategory, focus);
}
@Override
public IRecipeCategory getSelectedRecipeCategory() {
return state.recipeCategories.get(state.recipeCategoryIndex);
}
@Override
public ImmutableList<IRecipeCategory> getRecipeCategories() {
return state.recipeCategories;
}
@Override
public List<RecipeLayout> getRecipeWidgets(int posX, int posY, int spacingY) {
List<RecipeLayout> recipeWidgets = new ArrayList<RecipeLayout>();
IRecipeCategory recipeCategory = getSelectedRecipeCategory();
int recipeWidgetIndex = 0;
for (int recipeIndex = state.pageIndex * state.recipesPerPage; recipeIndex < recipes.size() && recipeWidgets.size() < state.recipesPerPage; recipeIndex++) {
IRecipeWrapper recipeWrapper = recipes.get(recipeIndex);
if (recipeWrapper == null) {
continue;
}
RecipeLayout recipeWidget = new RecipeLayout(recipeWidgetIndex++, posX, posY, recipeCategory, recipeWrapper, state.focus);
recipeWidgets.add(recipeWidget);
posY += spacingY;
}
return recipeWidgets;
}
@Override
public void nextRecipeCategory() {
final int recipesTypesCount = state.recipeCategories.size();
state.recipeCategoryIndex = (state.recipeCategoryIndex + 1) % recipesTypesCount;
state.pageIndex = 0;
updateRecipes();
stateListener.onStateChange();
}
@Override
public void setRecipeCategory(IRecipeCategory category) {
int index = state.recipeCategories.indexOf(category);
if (index < 0) {
return;
}
state.recipeCategoryIndex = index;
state.pageIndex = 0;
updateRecipes();
stateListener.onStateChange();
}
@Override
public boolean hasMultiplePages() {
return recipes.size() > state.recipesPerPage;
}
@Override
public void previousRecipeCategory() {
final int recipesTypesCount = state.recipeCategories.size();
state.recipeCategoryIndex = (recipesTypesCount + state.recipeCategoryIndex - 1) % recipesTypesCount;
state.pageIndex = 0;
updateRecipes();
stateListener.onStateChange();
}
@Override
public void nextPage() {
int pageCount = pageCount(state.recipesPerPage);
state.pageIndex = (state.pageIndex + 1) % pageCount;
stateListener.onStateChange();
}
@Override
public void previousPage() {
int pageCount = pageCount(state.recipesPerPage);
state.pageIndex = (pageCount + state.pageIndex - 1) % pageCount;
stateListener.onStateChange();
}
private int pageCount(int recipesPerPage) {
if (recipes.size() <= 1) {
return 1;
}
return MathUtil.divideCeil(recipes.size(), recipesPerPage);
}
@Override
public String getPageString() {
return (state.pageIndex + 1) + "/" + pageCount(state.recipesPerPage);
}
@Override
public boolean hasMultipleCategories() {
return state.recipeCategories.size() > 1;
}
@Override
public boolean hasAllCategories() {
return state.recipeCategories.size() == recipeRegistry.getRecipeCategories().size();
}
}