de.lessvoid.nifty.examples.defaultcontrols.dropdown.DropDownDialogController Maven / Gradle / Ivy

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Lots of Nifty example code! You can find the source for nearly all demos/tutorials in here.
There is a newer version: 1.4.3
package de.lessvoid.nifty.examples.defaultcontrols.dropdown;

import de.lessvoid.nifty.Nifty;
import de.lessvoid.nifty.NiftyEventSubscriber;
import de.lessvoid.nifty.controls.*;
import de.lessvoid.nifty.elements.Element;
import de.lessvoid.nifty.examples.defaultcontrols.common.JustAnExampleModelClass;
import de.lessvoid.nifty.input.NiftyInputEvent;
import de.lessvoid.nifty.input.NiftyStandardInputEvent;
import de.lessvoid.nifty.screen.Screen;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class DropDownDialogController implements Controller {
  private Screen screen;
  @Nullable
  private TextField addDropDownItemText;
  @Nullable
  private Button addDropDownItemButton;
  @Nullable
  private DropDown dropDown;
  @Nullable
  private Label selectedItem;
  @Nullable
  private Button removeDropDownItemButton;
  @Nullable
  private Label selectedIndices;
  @Nullable
  private RadioButtonGroup radioButtonGroup1;

  @SuppressWarnings("unchecked")
  @Override
  public void bind(
      @Nonnull final Nifty nifty,
      @Nonnull final Screen screen,
      @Nonnull final Element element,
      @Nonnull final Parameters parameter) {
    this.screen = screen;
    this.addDropDownItemText = screen.findNiftyControl("addDropDownItemText", TextField.class);
    this.addDropDownItemButton = screen.findNiftyControl("addDropDownItemButton", Button.class);
    this.dropDown = screen.findNiftyControl("dropDown", DropDown.class);
    this.selectedItem = screen.findNiftyControl("selectedItem", Label.class);
    this.removeDropDownItemButton = screen.findNiftyControl("removeDropDownItemButton", Button.class);
    this.selectedIndices = element.findNiftyControl("#selectedIndices", Label.class);
    this.radioButtonGroup1 = screen.findNiftyControl("RadioGroup-1", RadioButtonGroup.class);
  }

  @Override
  public void init(@Nonnull final Parameters parameter) {
    setDropDownItemButtonState();
    setRemoveDropDownItemButtonState(null);
    updateSelectedIndexLabel(dropDown.getSelectedIndex());
  }

  @Override
  public void onStartScreen() {
  }

  @Override
  public void onFocus(final boolean getFocus) {
  }

  @Override
  public boolean inputEvent(@Nonnull final NiftyInputEvent inputEvent) {
    return false;
  }

  @Override
  public void onEndScreen() {

  }

  @NiftyEventSubscriber(id="addDropDownItemText")
  public void onAppendTextFieldChanged(final String id, final TextFieldChangedEvent event) {
    setDropDownItemButtonState();
  }

  @NiftyEventSubscriber(id="addDropDownItemText")
  public void onAddTextFieldInputEvent(final String id, final NiftyStandardInputEvent event) {
    if (NiftyStandardInputEvent.SubmitText.equals(event)) {
      addDropDownItemButton.activate();
    }
  }

  @NiftyEventSubscriber(id="addDropDownItemButton")
  public void onAppendButtonClicked(final String id, final ButtonClickedEvent event) {
    if (addDropDownItemText.getText().length() == 0) {
      return;
    }

    // add the item and make sure that the last item is shown
    JustAnExampleModelClass newItem = new JustAnExampleModelClass(addDropDownItemText.getText());
    dropDown.addItem(newItem);
    dropDown.selectItem(newItem);
  }

  @NiftyEventSubscriber(id="dropDown")
  public void onDropDownSelectionChanged(final String id, @Nonnull final DropDownSelectionChangedEvent event) {
    if (event.getSelection() == null) {
      selectedItem.setText("");
    } else {
      selectedItem.setText(event.getSelection().toString());
    }
    setRemoveDropDownItemButtonState(event.getSelection());
    updateSelectedIndexLabel(event.getSelectionItemIndex());
  }

  @NiftyEventSubscriber(id="removeDropDownItemButton")
  public void onRemoveDropDownItemClicked(final String id, final ButtonClickedEvent event) {
    dropDown.removeItem(dropDown.getSelection());
  }

  @NiftyEventSubscriber(id="option-1")
  public void onOption1Changed(final String id, @Nonnull final RadioButtonStateChangedEvent event) {
    screen.findNiftyControl("option-1-changed", Label.class).setText(String.valueOf(event.isSelected()));
  }

  @NiftyEventSubscriber(id="option-2")
  public void onOption2Changed(final String id, @Nonnull final RadioButtonStateChangedEvent event) {
    screen.findNiftyControl("option-2-changed", Label.class).setText(String.valueOf(event.isSelected()));
  }

  @NiftyEventSubscriber(id="option-3")
  public void onOption3Changed(final String id, @Nonnull final RadioButtonStateChangedEvent event) {
    screen.findNiftyControl("option-3-changed", Label.class).setText(String.valueOf(event.isSelected()));
  }

  @NiftyEventSubscriber(id="option-4")
  public void onOption4Changed(final String id, @Nonnull final RadioButtonStateChangedEvent event) {
    screen.findNiftyControl("option-4-changed", Label.class).setText(String.valueOf(event.isSelected()));
  }

  @NiftyEventSubscriber(id="radioGroupAllowDeselection")
  public void onRadioGroupAllowDeselectionChanged(final String id, @Nonnull final CheckBoxStateChangedEvent event) {
    radioButtonGroup1.allowDeselection(event.isChecked());
  }

  @NiftyEventSubscriber(id="RadioGroup-1")
  public void onRadioGroup1Changed(final String id, @Nonnull final RadioButtonGroupStateChangedEvent event) {
    screen.findNiftyControl("RadioGroup-1-changed", Label.class).setText(event.getSelectedId() + " (" + event.getPreviousSelectedId() + ")");
  }

  @NiftyEventSubscriber(id="radioGroupDisable")
  public void onRadioGroupDisableCheckBox(final String id, @Nonnull final CheckBoxStateChangedEvent event) {
    radioButtonGroup1.setEnabled(!event.isChecked());
  }

  private void setDropDownItemButtonState() {
    if (addDropDownItemText.getText().isEmpty()) {
      addDropDownItemButton.disable();
    } else {
      addDropDownItemButton.enable();
    }
  }

  private void setRemoveDropDownItemButtonState(@Nullable final JustAnExampleModelClass item) {
    if (item == null) {
      removeDropDownItemButton.disable();
    } else {
      removeDropDownItemButton.enable();
    }
  }

  private void updateSelectedIndexLabel(final int selectedItemIndex) {
    if (selectedItemIndex == -1) {
      selectedIndices.setText("N/A");
      return;
    }
    selectedIndices.setText(String.valueOf(selectedItemIndex));
  }
}