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package dev.isxander.yacl3.gui.controllers.dropdown;
import com.mojang.blaze3d.vertex.PoseStack;
import dev.isxander.yacl3.api.utils.Dimension;
import dev.isxander.yacl3.api.utils.MutableDimension;
import dev.isxander.yacl3.gui.YACLScreen;
import dev.isxander.yacl3.gui.controllers.ControllerPopupWidget;
import dev.isxander.yacl3.gui.utils.GuiUtils;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.gui.screens.Screen;
import net.minecraft.network.chat.Component;
public class DropdownWidget<T> extends ControllerPopupWidget<AbstractDropdownController<T>> {
public static final int MAX_SHOWN_NUMBER_OF_ITEMS = 7;
public static final int DROPDOWN_PADDING = 2;
private final AbstractDropdownControllerElement<T, ?> dropdownElement;
protected Dimension<Integer> dropdownDim;
// Scroll offset in the list of possible values
protected int firstVisibleIndex = 0;
// Stores the current selection position. The item at this position in the dropdown list will be chosen as the
// accepted value when the element is closed.
protected int selectedIndex = 0;
public DropdownWidget(AbstractDropdownController<T> control, YACLScreen screen, Dimension<Integer> dim, AbstractDropdownControllerElement<T, ?> dropdownElement) {
super(control, screen, dim, dropdownElement);
this.dropdownElement = dropdownElement;
setDimension(dim);
}
@Override
public void setDimension(Dimension<Integer> dim) {
super.setDimension(dim);
// Set up the dropdown above the controller ...
int dropdownHeight = dim.height() * numberOfVisibleItems();
int dropdownY = dim.y() - dropdownHeight - DROPDOWN_PADDING;
// ... unless it doesn't fit, then place it below
if (dropdownY < screen.tabArea.top()) {
dropdownY = dim.yLimit() + DROPDOWN_PADDING;
}
dropdownDim = Dimension.ofInt(dim.x(), dropdownY, dim.width(), dropdownHeight);
}
public int entryHeight() {
return dropdownElement.getDimension().height();
}
@Override
public void render(GuiGraphics graphics, int mouseX, int mouseY, float delta) {
if (dropdownLength() == 0) return;
PoseStack matrices = graphics.pose();
matrices.pushPose();
matrices.translate(0, 0, 200);
// Background
//graphics.setColor(0.25f, 0.25f, 0.25f, 1.0f);
GuiUtils.blitGuiTexColor(
graphics,
/*? if >1.20.4 {*/
Screen.MENU_BACKGROUND,
/*?} else {*/
/*Screen.BACKGROUND_LOCATION,
*//*?}*/
dropdownDim.x(), dropdownDim.y(),
0.0f, 0.0f,
dropdownDim.width(), dropdownDim.height(),
32, 32,
0xFF3F3F3F
);
//graphics.setColor(1.0f, 1.0f, 1.0f, 1.0f);
graphics.renderOutline(dropdownDim.x(), dropdownDim.y(), dropdownDim.width(), dropdownDim.height(), -1);
// Highlight the currently selected element
//graphics.setColor(0.0f, 0.0f, 0.0f, 0.5f);
int y = dropdownDim.y() + 2 + entryHeight() * selectedVisibleIndex();
graphics.fill(dropdownDim.x(), y, dropdownDim.xLimit(), y + entryHeight(), 0x7F000000);
//graphics.setColor(1.0f, 1.0f, 1.0f, 1.0f);
graphics.renderOutline(dropdownDim.x(), y, dropdownDim.width(), entryHeight(), -1);
// Render all visible elements
MutableDimension<Integer> entryDimension = Dimension.ofInt(
dropdownDim.x() - dropdownElement.getDecorationPadding(),
dropdownDim.y() + 2,
dropdownDim.width(),
entryHeight()
);
for (int i = firstVisibleIndex; i < lastVisibleIndex(); ++i) {
dropdownElement.renderDropdownEntry(graphics, entryDimension, i);
entryDimension.move(0, entryHeight());
}
matrices.popPose();
}
@Override
public boolean mouseClicked(double mouseX, double mouseY, int button) {
if (isMouseOver(mouseX, mouseY)) {
// Closes and cleans up the dropdown
dropdownElement.unfocus();
return true;
} else if (dropdownElement.isMouseOver(mouseX, mouseY)) {
return dropdownElement.mouseClicked(mouseX, mouseY, button);
} else {
close();
return false;
}
}
@Override
public boolean mouseScrolled(double mouseX, double mouseY, /*? if >1.20.1 {*/ double scrollX, /*?}*/ double scrollY) {
if (isMouseOver(mouseX, mouseY)) {
if (scrollY < 0) {
scrollDown();
} else {
scrollUp();
}
return true;
}
return super.mouseScrolled(mouseX, mouseY, /*? if >1.20.1 {*/ scrollX, /*?}*/ scrollY);
}
@Override
public void mouseMoved(double mouseX, double mouseY) {
if (isMouseOver(mouseX, mouseY)) {
int index = (int) ((mouseY - dropdownDim.y()) / entryHeight());
selectVisibleItem(index);
}
}
@Override
public boolean isMouseOver(double mouseX, double mouseY) {
return dropdownDim.isPointInside((int) mouseX, (int) mouseY);
}
@Override
public boolean charTyped(char chr, int modifiers) {
// Done to allow for typing whilst the color picker is visible
return dropdownElement.charTyped(chr, modifiers);
}
public int dropdownLength() {
return dropdownElement.matchingValues.size();
}
public int numberOfVisibleItems() {
return Math.min(MAX_SHOWN_NUMBER_OF_ITEMS, dropdownLength());
}
public int lastVisibleIndex() {
return Math.min(firstVisibleIndex + MAX_SHOWN_NUMBER_OF_ITEMS, dropdownLength());
}
public int selectedIndex() {
return selectedIndex;
}
public void resetSelectedIndex() {
selectedIndex = 0;
}
/**
* @return the offset of the selected element relative to the first visible entry
*/
public int selectedVisibleIndex() {
return selectedIndex - firstVisibleIndex;
}
public void selectVisibleItem(int visibleIndex) {
selectedIndex = Math.min(firstVisibleIndex + visibleIndex, dropdownLength() - 1);
}
public void selectNextEntry() {
if (selectedIndex == dropdownLength() - 1) {
selectedIndex = 0;
} else {
selectedIndex++;
}
if (selectedIndex - firstVisibleIndex >= MAX_SHOWN_NUMBER_OF_ITEMS / 2) {
centerOnSelectedItem();
}
}
public void selectPreviousEntry() {
if (selectedIndex == 0) {
selectedIndex = dropdownLength() - 1;
} else {
selectedIndex--;
}
if (selectedIndex - firstVisibleIndex <= MAX_SHOWN_NUMBER_OF_ITEMS / 2) {
centerOnSelectedItem();
}
}
private void centerOnSelectedItem() {
// Limit the visible options to allow scrolling through the suggestion list
int begin = Math.max(0, selectedIndex - MAX_SHOWN_NUMBER_OF_ITEMS / 2);
int end = begin + MAX_SHOWN_NUMBER_OF_ITEMS;
if (end >= dropdownLength()) {
end = dropdownLength();
begin = Math.max(0, end - MAX_SHOWN_NUMBER_OF_ITEMS);
}
firstVisibleIndex = begin;
}
public void scrollDown() {
if (firstVisibleIndex + 1 + MAX_SHOWN_NUMBER_OF_ITEMS <= dropdownLength()) {
firstVisibleIndex++;
}
if (selectedIndex < firstVisibleIndex) selectedIndex = firstVisibleIndex;
}
public void scrollUp() {
if (firstVisibleIndex > 0) {
firstVisibleIndex--;
}
if (selectedIndex > firstVisibleIndex + MAX_SHOWN_NUMBER_OF_ITEMS - 1) {
selectedIndex = firstVisibleIndex + MAX_SHOWN_NUMBER_OF_ITEMS - 1;
}
}
@Override
public void close() {
dropdownElement.removeDropdownWidget();
}
@Override
public Component popupTitle() {
return Component.translatable("yacl.control.dropdown.dropdown_widget_title");
}
}
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