Java tutorial
/* * Catroid: An on-device visual programming system for Android devices * Copyright (C) 2010-2015 The Catrobat Team * (<http://developer.catrobat.org/credits>) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * An additional term exception under section 7 of the GNU Affero * General Public License, version 3, is available at * http://developer.catrobat.org/license_additional_term * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.catrobat.catroid.content.bricks; import android.content.Context; import android.content.DialogInterface; import android.content.res.ColorStateList; import android.graphics.drawable.Drawable; import android.support.v4.app.FragmentActivity; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.BaseAdapter; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.Spinner; import android.widget.SpinnerAdapter; import android.widget.TextView; import com.badlogic.gdx.scenes.scene2d.actions.SequenceAction; import org.catrobat.catroid.R; import org.catrobat.catroid.common.MessageContainer; import org.catrobat.catroid.content.BroadcastMessage; import org.catrobat.catroid.content.Sprite; import org.catrobat.catroid.content.actions.ExtendedActions; import org.catrobat.catroid.ui.dialogs.BrickTextDialog; import java.util.List; public class BroadcastBrick extends BrickBaseType implements BroadcastMessage { private static final long serialVersionUID = 1L; protected String broadcastMessage; protected transient AdapterView<?> adapterView; protected Object readResolve() { MessageContainer.addMessage(broadcastMessage); return this; } public BroadcastBrick(String broadcastMessage) { this.broadcastMessage = broadcastMessage; MessageContainer.addMessage(broadcastMessage); } @Override public Brick copyBrickForSprite(Sprite sprite) { BroadcastBrick copyBrick = (BroadcastBrick) clone(); return copyBrick; } @Override public Brick clone() { return new BroadcastBrick(broadcastMessage); } @Override public int getRequiredResources() { return NO_RESOURCES; } @Override public String getBroadcastMessage() { return broadcastMessage; } @Override public View getView(final Context context, int brickId, BaseAdapter baseAdapter) { if (animationState) { return view; } if (view == null) { alphaValue = 255; } view = View.inflate(context, R.layout.brick_broadcast, null); view = getViewWithAlpha(alphaValue); setCheckboxView(R.id.brick_broadcast_checkbox); checkbox.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { checked = isChecked; adapter.handleCheck(BroadcastBrick.this, isChecked); } }); final Spinner broadcastSpinner = (Spinner) view.findViewById(R.id.brick_broadcast_spinner); broadcastSpinner.setFocusableInTouchMode(false); broadcastSpinner.setFocusable(false); if (!(checkbox.getVisibility() == View.VISIBLE)) { broadcastSpinner.setClickable(true); broadcastSpinner.setEnabled(true); } else { broadcastSpinner.setClickable(false); broadcastSpinner.setEnabled(false); } broadcastSpinner.setAdapter(MessageContainer.getMessageAdapter(context)); broadcastSpinner.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { String selectedMessage = broadcastSpinner.getSelectedItem().toString(); if (selectedMessage.equals(context.getString(R.string.new_broadcast_message))) { showNewMessageDialog(broadcastSpinner); } else { broadcastMessage = selectedMessage; adapterView = parent; } } @Override public void onNothingSelected(AdapterView<?> parent) { } }); setSpinnerSelection(broadcastSpinner); return view; } @Override public View getPrototypeView(Context context) { View prototypeView = View.inflate(context, R.layout.brick_broadcast, null); Spinner broadcastSpinner = (Spinner) prototypeView.findViewById(R.id.brick_broadcast_spinner); broadcastSpinner.setFocusableInTouchMode(false); broadcastSpinner.setFocusable(false); broadcastSpinner.setEnabled(false); SpinnerAdapter broadcastSpinnerAdapter = MessageContainer.getMessageAdapter(context); broadcastSpinner.setAdapter(broadcastSpinnerAdapter); setSpinnerSelection(broadcastSpinner); return prototypeView; } @Override public View getViewWithAlpha(int alphaValue) { if (view != null) { View layout = view.findViewById(R.id.brick_broadcast_layout); Drawable background = layout.getBackground(); background.setAlpha(alphaValue); TextView textBroadcastLabel = (TextView) view.findViewById(R.id.brick_broadcast_label); textBroadcastLabel.setTextColor(textBroadcastLabel.getTextColors().withAlpha(alphaValue)); Spinner broadcastSpinner = (Spinner) view.findViewById(R.id.brick_broadcast_spinner); ColorStateList color = textBroadcastLabel.getTextColors().withAlpha(alphaValue); broadcastSpinner.getBackground().setAlpha(alphaValue); if (adapterView != null) { ((TextView) adapterView.getChildAt(0)).setTextColor(color); } this.alphaValue = alphaValue; } return view; } protected void setSpinnerSelection(Spinner spinner) { int position = MessageContainer.getPositionOfMessageInAdapter(spinner.getContext(), broadcastMessage); spinner.setSelection(position, true); } // TODO: BroadcastBrick and BroadcastReceiverBrick contain this identical method. protected void showNewMessageDialog(final Spinner spinner) { final Context context = spinner.getContext(); BrickTextDialog editDialog = new BrickTextDialog() { @Override protected void initialize() { inputTitle.setText(R.string.dialog_new_broadcast_message_name); } @Override protected boolean handleOkButton() { String newMessage = input.getText().toString().trim(); if (newMessage.isEmpty() || newMessage.equals(context.getString(R.string.new_broadcast_message))) { dismiss(); return false; } broadcastMessage = newMessage; MessageContainer.addMessage(broadcastMessage); setSpinnerSelection(spinner); return true; } @Override public void onDismiss(DialogInterface dialog) { setSpinnerSelection(spinner); super.onDismiss(dialog); } @Override protected String getTitle() { return getString(R.string.dialog_new_broadcast_message_title); } }; editDialog.show(((FragmentActivity) context).getSupportFragmentManager(), "dialog_broadcast_brick"); } @Override public List<SequenceAction> addActionToSequence(Sprite sprite, SequenceAction sequence) { sequence.addAction(ExtendedActions.broadcast(sprite, broadcastMessage)); return null; } }