SelectionFragment.java

/*
 * Copyright (c) 2017
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

package jsettlers.main.android.gameplay.ui.fragments.menus.selection;

import jsettlers.common.selectable.ISelectionSet;
import jsettlers.input.SelectionSet;
import jsettlers.main.android.core.controls.ControlsResolver;
import jsettlers.main.android.core.controls.SelectionControls;
import jsettlers.main.android.gameplay.navigation.MenuNavigator;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;

/**
 * Created by tompr on 10/01/2017.
 */
public abstract class SelectionFragment extends Fragment {
	private SelectionControls selectionControls;
	private ISelectionSet selection;

	@Override
	public void onActivityCreated(@Nullable Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);
		selectionControls = new ControlsResolver(getActivity()).getSelectionControls();
		selection = selectionControls.getCurrentSelection();

		// It shouldn't be possible for the selection to be null because the selection menu is only launched due to selection. Noticed it happen when doing loads of minute skips though.
		if (selection == null) {
			MenuNavigator menuNavigator = (MenuNavigator) getParentFragment();
			menuNavigator.removeSelectionMenu();
			menuNavigator.dismissMenu();
		}
	}

	@Override
	public void onDestroy() {
		super.onDestroy();
		// If the selection hasn't changed when the selection menu is dismissed by the user then the user has started using some other menu and we should deselect by calling endTask(). Check
		// isRemoving to confirm its not just a rotation.
		// If the selection has changed then we don't want to overwrite it.
		if (selection == selectionControls.getCurrentSelection() && isRemoving()) {
			selectionControls.deselect();
		}
	}

	public ISelectionSet getSelection() {
		if (selection == null) {
			return new SelectionSet(); // if its null return a dummy set to stop the subclasses from null reference crashing, menu dismiss has already been triggered.
		} else {
			return selection;
		}
	}
}