Java tutorial
/** * Catroid: An on-device visual programming system for Android devices * Copyright (C) 2010-2013 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 com.app.blockydemo.content.bricks; import android.content.Context; import android.content.res.ColorStateList; import android.support.v4.app.FragmentActivity; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; 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.TextView; import com.app.blockydemo.ProjectManager; import com.app.blockydemo.R; import com.app.blockydemo.content.Project; import com.app.blockydemo.content.Script; import com.app.blockydemo.content.Sprite; import com.app.blockydemo.formulaeditor.Formula; import com.app.blockydemo.formulaeditor.UserVariable; import com.app.blockydemo.ui.adapter.UserVariableAdapter; import com.app.blockydemo.ui.adapter.UserVariableAdapterWrapper; import com.app.blockydemo.ui.dialogs.NewVariableDialog; import com.app.blockydemo.ui.dialogs.NewVariableDialog.NewVariableDialogListener; import com.app.blockydemo.ui.fragment.FormulaEditorFragment; public class SetVariableBrick extends BrickBaseType implements OnClickListener, NewVariableDialogListener, FormulaBrick { private static final long serialVersionUID = 1L; private UserVariable userVariable; private Formula variableFormula; private transient AdapterView<?> adapterView; public SetVariableBrick(Sprite sprite, Formula variableFormula, UserVariable userVariable) { this.sprite = sprite; this.variableFormula = variableFormula; this.userVariable = userVariable; } public SetVariableBrick(Sprite sprite, double value) { this.sprite = sprite; this.variableFormula = new Formula(value); this.userVariable = null; } @Override public Formula getFormula() { return variableFormula; } @Override public int getRequiredResources() { return NO_RESOURCES; } @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_set_variable, null); view = getViewWithAlpha(alphaValue); setCheckboxView(R.id.brick_set_variable_checkbox); final Brick brickInstance = this; checkbox.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { checked = isChecked; adapter.handleCheck(brickInstance, isChecked); } }); TextView prototypeText = (TextView) view.findViewById(R.id.brick_set_variable_prototype_view); TextView textField = (TextView) view.findViewById(R.id.brick_set_variable_edit_text); prototypeText.setVisibility(View.GONE); variableFormula.setTextFieldId(R.id.brick_set_variable_edit_text); variableFormula.refreshTextField(view); textField.setVisibility(View.VISIBLE); textField.setOnClickListener(this); Spinner variableSpinner = (Spinner) view.findViewById(R.id.set_variable_spinner); UserVariableAdapter userVariableAdapter = ProjectManager.getInstance().getCurrentProject() .getUserVariables().createUserVariableAdapter(context, sprite); UserVariableAdapterWrapper userVariableAdapterWrapper = new UserVariableAdapterWrapper(context, userVariableAdapter); userVariableAdapterWrapper.setItemLayout(android.R.layout.simple_spinner_item, android.R.id.text1); variableSpinner.setAdapter(userVariableAdapterWrapper); if (!(checkbox.getVisibility() == View.VISIBLE)) { variableSpinner.setClickable(true); variableSpinner.setEnabled(true); } else { variableSpinner.setClickable(false); variableSpinner.setFocusable(false); } setSpinnerSelection(variableSpinner, null); variableSpinner.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View view, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_UP) { if (((Spinner) view).getSelectedItemPosition() == 0 && ((Spinner) view).getAdapter().getCount() == 1) { NewVariableDialog dialog = new NewVariableDialog((Spinner) view); dialog.addVariableDialogListener(SetVariableBrick.this); dialog.show(((FragmentActivity) view.getContext()).getSupportFragmentManager(), NewVariableDialog.DIALOG_FRAGMENT_TAG); return true; } } return false; } }); variableSpinner.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { if (position == 0 && ((UserVariableAdapterWrapper) parent.getAdapter()).isTouchInDropDownView()) { NewVariableDialog dialog = new NewVariableDialog((Spinner) parent); dialog.addVariableDialogListener(SetVariableBrick.this); dialog.show(((FragmentActivity) view.getContext()).getSupportFragmentManager(), NewVariableDialog.DIALOG_FRAGMENT_TAG); } ((UserVariableAdapterWrapper) parent.getAdapter()).resetIsTouchInDropDownView(); userVariable = (UserVariable) parent.getItemAtPosition(position); adapterView = parent; } @Override public void onNothingSelected(AdapterView<?> arg0) { userVariable = null; } }); return view; } @Override public View getPrototypeView(Context context) { View prototypeView = View.inflate(context, R.layout.brick_set_variable, null); Spinner variableSpinner = (Spinner) prototypeView.findViewById(R.id.set_variable_spinner); variableSpinner.setFocusableInTouchMode(false); variableSpinner.setFocusable(false); UserVariableAdapter userVariableAdapter = ProjectManager.getInstance().getCurrentProject() .getUserVariables().createUserVariableAdapter(context, sprite); UserVariableAdapterWrapper userVariableAdapterWrapper = new UserVariableAdapterWrapper(context, userVariableAdapter); userVariableAdapterWrapper.setItemLayout(android.R.layout.simple_spinner_item, android.R.id.text1); variableSpinner.setAdapter(userVariableAdapterWrapper); setSpinnerSelection(variableSpinner, null); TextView textSetVariable = (TextView) prototypeView.findViewById(R.id.brick_set_variable_prototype_view); textSetVariable.setText(String.valueOf(variableFormula.interpretDouble(sprite))); return prototypeView; } @Override public View getViewWithAlpha(int alphaValue) { if (view != null) { TextView textSetVariable = (TextView) view.findViewById(R.id.brick_set_variable_label); TextView textTo = (TextView) view.findViewById(R.id.brick_set_variable_to_textview); TextView editVariable = (TextView) view.findViewById(R.id.brick_set_variable_edit_text); Spinner variablebrickSpinner = (Spinner) view.findViewById(R.id.set_variable_spinner); ColorStateList color = textSetVariable.getTextColors().withAlpha(alphaValue); variablebrickSpinner.getBackground().setAlpha(alphaValue); if (adapterView != null) { ((TextView) adapterView.getChildAt(0)).setTextColor(color); } textSetVariable.setTextColor(textSetVariable.getTextColors().withAlpha(alphaValue)); textTo.setTextColor(textTo.getTextColors().withAlpha(alphaValue)); editVariable.setTextColor(editVariable.getTextColors().withAlpha(alphaValue)); editVariable.getBackground().setAlpha(alphaValue); this.alphaValue = (alphaValue); } return view; } @Override public Brick clone() { SetVariableBrick clonedBrick = new SetVariableBrick(getSprite(), variableFormula.clone(), userVariable); return clonedBrick; } @Override public void onClick(View view) { if (checkbox.getVisibility() == View.VISIBLE) { return; } FormulaEditorFragment.showFragment(view, this, variableFormula); } @Override public Brick copyBrickForSprite(Sprite sprite, Script script) { Project currentProject = ProjectManager.getInstance().getCurrentProject(); if (!currentProject.getSpriteList().contains(this.sprite)) { throw new RuntimeException("this is not the current project"); } SetVariableBrick copyBrick = (SetVariableBrick) clone(); copyBrick.sprite = sprite; copyBrick.userVariable = currentProject.getUserVariables().getUserVariable(userVariable.getName(), sprite); return copyBrick; } private void updateUserVariableIfDeleted(UserVariableAdapterWrapper userVariableAdapterWrapper) { if (userVariable != null) { if (userVariableAdapterWrapper.getPositionOfItem(userVariable) == 0) { userVariable = null; } } } private void setSpinnerSelection(Spinner variableSpinner, UserVariable newUserVariable) { UserVariableAdapterWrapper userVariableAdapterWrapper = (UserVariableAdapterWrapper) variableSpinner .getAdapter(); updateUserVariableIfDeleted(userVariableAdapterWrapper); if (userVariable != null) { variableSpinner.setSelection(userVariableAdapterWrapper.getPositionOfItem(userVariable), true); } else if (newUserVariable != null) { variableSpinner.setSelection(userVariableAdapterWrapper.getPositionOfItem(newUserVariable), true); userVariable = newUserVariable; } else { variableSpinner.setSelection(userVariableAdapterWrapper.getCount() - 1, true); userVariable = userVariableAdapterWrapper.getItem(userVariableAdapterWrapper.getCount() - 1); } } @Override public void onFinishNewVariableDialog(Spinner spinnerToUpdate, UserVariable newUserVariable) { UserVariableAdapterWrapper userVariableAdapterWrapper = ((UserVariableAdapterWrapper) spinnerToUpdate .getAdapter()); userVariableAdapterWrapper.notifyDataSetChanged(); setSpinnerSelection(spinnerToUpdate, newUserVariable); } }