Java tutorial
/* * Catroid: An on-device visual programming system for Android devices * Copyright (C) 2010-2014 The Catrobat Team * (<http://developer.fyp14017.hku/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.fyp14017.hku/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.hku/licenses/>. */ package hku.fyp14017.blencode.ui.dialogs; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnShowListener; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.os.Handler; import android.os.ResultReceiver; import android.preference.PreferenceManager; import android.support.v4.app.DialogFragment; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup.LayoutParams; import android.view.WindowManager; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import hku.fyp14017.blencode.ProjectManager; import hku.fyp14017.blencode.R; import hku.fyp14017.blencode.common.Constants; import hku.fyp14017.blencode.transfers.ProjectUploadService; import hku.fyp14017.blencode.utils.StatusBarNotificationManager; import hku.fyp14017.blencode.utils.UtilFile; import hku.fyp14017.blencode.utils.Utils; import java.io.File; import hku.fyp14017.blencode.ProjectManager; import hku.fyp14017.blencode.common.Constants; import hku.fyp14017.blencode.transfers.ProjectUploadService; import hku.fyp14017.blencode.utils.StatusBarNotificationManager; import hku.fyp14017.blencode.utils.UtilFile; import hku.fyp14017.blencode.utils.Utils; public class UploadProjectDialog extends DialogFragment { private class UploadReceiver extends ResultReceiver { public UploadReceiver(Handler handler) { super(handler); } @Override protected void onReceiveResult(int resultCode, Bundle resultData) { super.onReceiveResult(resultCode, resultData); if (resultCode == Constants.UPDATE_UPLOAD_PROGRESS) { long progress = resultData.getLong("currentUploadProgress"); boolean endOfFileReached = resultData.getBoolean("endOfFileReached"); Integer notificationId = resultData.getInt("notificationId"); String projectName = resultData.getString("projectName"); long progressPercent = 0; if (endOfFileReached) { progressPercent = 100; } else { progressPercent = UtilFile.getProgressFromBytes(projectName, progress); } StatusBarNotificationManager.getInstance().showOrUpdateNotification(notificationId, Long.valueOf(progressPercent).intValue()); } } } public static final String DIALOG_FRAGMENT_TAG = "dialog_upload_project"; private EditText projectUploadName; private EditText projectDescriptionField; private TextView projectRename; private TextView sizeOfProject; private String currentProjectName; private String currentProjectDescription; private String newProjectName; private Activity activity; @Override public Dialog onCreateDialog(Bundle savedInstanceState) { View dialogView = LayoutInflater.from(getActivity()) .inflate(hku.fyp14017.blencode.R.layout.dialog_upload_project, null); projectRename = (TextView) dialogView.findViewById(hku.fyp14017.blencode.R.id.tv_project_rename); projectDescriptionField = (EditText) dialogView .findViewById(hku.fyp14017.blencode.R.id.project_description_upload); projectUploadName = (EditText) dialogView.findViewById(hku.fyp14017.blencode.R.id.project_upload_name); sizeOfProject = (TextView) dialogView .findViewById(hku.fyp14017.blencode.R.id.dialog_upload_size_of_project); Dialog dialog = new AlertDialog.Builder(getActivity()).setView(dialogView) .setTitle(hku.fyp14017.blencode.R.string.upload_project_dialog_title) .setPositiveButton(hku.fyp14017.blencode.R.string.upload_button, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { handleUploadButtonClick(); } }) .setNegativeButton(hku.fyp14017.blencode.R.string.cancel_button, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { handleCancelButtonClick(); } }) .create(); dialog.setCanceledOnTouchOutside(true); dialog.getWindow().setLayout(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE); dialog.setOnShowListener(new OnShowListener() { @Override public void onShow(DialogInterface dialog) { initListeners(); InputMethodManager inputManager = (InputMethodManager) getActivity() .getSystemService(Context.INPUT_METHOD_SERVICE); inputManager.showSoftInput(projectUploadName, InputMethodManager.SHOW_IMPLICIT); } }); initControls(); return dialog; } private void initControls() { currentProjectName = ProjectManager.getInstance().getCurrentProject().getName(); currentProjectDescription = ProjectManager.getInstance().getCurrentProject().getDescription(); sizeOfProject .setText(UtilFile.getSizeAsString(new File(Constants.DEFAULT_ROOT + "/" + currentProjectName))); projectRename.setVisibility(View.GONE); projectUploadName.setText(currentProjectName); projectDescriptionField.setText(currentProjectDescription); projectUploadName.requestFocus(); projectUploadName.selectAll(); } private void initListeners() { projectUploadName.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View view, boolean hasFocus) { if (hasFocus) { getDialog().getWindow() .setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE); } } }); projectDescriptionField.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View view, boolean hasFocus) { if (hasFocus) { getDialog().getWindow() .setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE); } } }); projectUploadName.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { currentProjectName = ProjectManager.getInstance().getCurrentProject().getName(); if (!projectUploadName.getText().toString().equals(currentProjectName)) { projectRename.setVisibility(View.VISIBLE); newProjectName = projectUploadName.getText().toString(); } else { projectRename.setVisibility(View.GONE); } if (s.length() == 0) { Toast.makeText(getActivity(), hku.fyp14017.blencode.R.string.notification_invalid_text_entered, Toast.LENGTH_SHORT).show(); ((AlertDialog) getDialog()).getButton(Dialog.BUTTON_POSITIVE).setEnabled(false); } else { ((AlertDialog) getDialog()).getButton(Dialog.BUTTON_POSITIVE).setEnabled(true); } } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void afterTextChanged(Editable s) { } }); } private void handleUploadButtonClick() { ProjectManager projectManager = ProjectManager.getInstance(); String uploadName = projectUploadName.getText().toString(); String projectDescription = projectDescriptionField.getText().toString(); if (uploadName.isEmpty()) { Utils.showErrorDialog(getActivity(), hku.fyp14017.blencode.R.string.error_no_name_entered); return; } if (uploadName.equals(getString(hku.fyp14017.blencode.R.string.default_project_name))) { Utils.showErrorDialog(getActivity(), hku.fyp14017.blencode.R.string.error_upload_project_with_default_name); return; } Context context = getActivity().getApplicationContext(); if (Utils.isStandardProject(projectManager.getCurrentProject(), context)) { Utils.showErrorDialog(getActivity(), hku.fyp14017.blencode.R.string.error_upload_default_project); return; } boolean needsRenaming; if ((needsRenaming = !uploadName.equals(currentProjectName)) || !projectDescription.equals(currentProjectDescription)) { String oldDescription = currentProjectDescription; projectManager.getCurrentProject().setDescription(projectDescription); if (needsRenaming) { projectRename.setVisibility(View.VISIBLE); boolean renamed = projectManager.renameProject(newProjectName, getActivity()); if (!renamed) { projectManager.getCurrentProject().setDescription(oldDescription); return; } } } projectManager.getCurrentProject().setDeviceData(getActivity()); dismiss(); String projectPath = Constants.DEFAULT_ROOT + "/" + projectManager.getCurrentProject().getName(); SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity()); String token = sharedPreferences.getString(Constants.TOKEN, Constants.NO_TOKEN); String username = sharedPreferences.getString(Constants.USERNAME, Constants.NO_USERNAME); Intent uploadIntent = new Intent(getActivity(), ProjectUploadService.class); // TODO check this extras - e.g. project description isn't used by web uploadIntent.putExtra("receiver", new UploadReceiver(new Handler())); uploadIntent.putExtra("uploadName", uploadName); uploadIntent.putExtra("projectDescription", projectDescription); uploadIntent.putExtra("projectPath", projectPath); uploadIntent.putExtra("username", username); uploadIntent.putExtra("token", token); int notificationId = StatusBarNotificationManager.getInstance().createUploadNotification(getActivity(), uploadName); uploadIntent.putExtra("notificationId", notificationId); activity = getActivity(); activity.startService(uploadIntent); } private void handleCancelButtonClick() { dismiss(); } }