Java tutorial
/* * Copyright (C) 2014 George Venios * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.veniosg.dir.android.dialog; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.Toast; import com.veniosg.dir.IntentConstants; import com.veniosg.dir.R; import com.veniosg.dir.android.ui.toast.ToastDisplayer; import com.veniosg.dir.mvvm.model.FileHolder; import com.veniosg.dir.mvvm.model.storage.operation.RenameOperation; import java.io.File; import static android.view.WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE; import static android.view.inputmethod.EditorInfo.IME_ACTION_GO; import static com.veniosg.dir.mvvm.model.storage.operation.FileOperationRunnerInjector.operationRunner; import static com.veniosg.dir.mvvm.model.storage.operation.argument.RenameArguments.renameArguments; public class RenameDialog extends DialogFragment { private FileHolder mFileHolder; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mFileHolder = getArguments().getParcelable(IntentConstants.EXTRA_DIALOG_FILE_HOLDER); } @Override public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { getDialog().getWindow().setSoftInputMode(SOFT_INPUT_STATE_VISIBLE); return super.onCreateView(inflater, container, savedInstanceState); } @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { LayoutInflater inflater = LayoutInflater.from(getActivity()); LinearLayout view = (LinearLayout) inflater.inflate(R.layout.dialog_text_input, null); final EditText v = view.findViewById(R.id.textinput); v.setText(mFileHolder.getName()); v.setOnEditorActionListener((tv, actionId, event) -> { if (actionId == IME_ACTION_GO) { tryRename(tv.getText().toString()); } return true; }); AlertDialog dialog = new AlertDialog.Builder(getActivity()).setTitle(R.string.menu_rename).setView(view) .setNegativeButton(android.R.string.cancel, null) .setPositiveButton(android.R.string.ok, (dialog1, which) -> tryRename(v.getText().toString())) .create(); dialog.setIcon(mFileHolder.getIcon()); return dialog; } private void tryRename(String newName) { File destFile = new File(mFileHolder.getFile().getParent(), newName); if (destFile.exists()) { Toast.makeText(getContext(), R.string.file_exists, Toast.LENGTH_SHORT).show(); } else { renameTo(destFile.getName()); dismiss(); } } private void renameTo(String newName) { boolean res = false; if (newName.length() > 0) { Context c = getContext(); operationRunner(c).run(new RenameOperation(c, new ToastDisplayer(c)), renameArguments(mFileHolder.getFile(), newName)); } } }