Java tutorial
/* * Created by Angel Leon (@gubatron), Alden Torres (aldenml), * Marcelina Knitter (@marcelinkaaa) * Copyright (c) 2011-2016, FrostWire(R). All rights reserved. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.frostwire.android.gui.adapters.menu; import android.app.Activity; import android.app.Dialog; import android.content.Context; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import com.frostwire.android.R; import com.frostwire.android.core.FileDescriptor; import com.frostwire.android.gui.Librarian; import com.frostwire.android.gui.adapters.FileListAdapter; import com.frostwire.android.gui.util.UIUtils; import com.frostwire.android.gui.views.AbstractDialog; import com.frostwire.android.gui.views.MenuAction; import org.apache.commons.io.FilenameUtils; /** * @author gubatron * @author aldenml * @author marcelinkaaa */ public class RenameFileMenuAction extends MenuAction { private final FileDescriptor fd; private final FileListAdapter adapter; private final AbstractDialog.OnDialogClickListener dialogClickListener; public RenameFileMenuAction(Context context, FileListAdapter adapter, FileDescriptor fd) { this(context, adapter, fd, null); } public RenameFileMenuAction(Context context, FileListAdapter adapter, FileDescriptor fd, AbstractDialog.OnDialogClickListener clickListener) { super(context, R.drawable.contextmenu_icon_rename, R.string.rename); this.adapter = adapter; this.fd = fd; this.dialogClickListener = clickListener; } @Override public void onClick(Context context) { showRenameFileDialog(); } private void showRenameFileDialog() { RenameFileMenuActionDialog.renameAction = this; RenameFileMenuActionDialog.newInstance(getFilePath(), dialogClickListener) .show(((Activity) getContext()).getFragmentManager()); } private boolean isValidFileName(String newFileName) { final String[] reservedChars = { "|", "\\", "?", "*", "<", "\"", ":", ">" }; for (String c : reservedChars) { if (newFileName.contains(c)) { return false; } } return true; } private void renameFile(String newFileName) { Context context = getContext(); if (context == null) { return; } if (isValidFileName(newFileName)) { fd.filePath = Librarian.instance().renameFile(context, fd, newFileName); fd.title = FilenameUtils.getBaseName(newFileName); if (adapter != null) { adapter.notifyDataSetChanged(); } } else { UIUtils.showLongMessage(context, R.string.invalid_filename); } } public String getFilePath() { return fd.filePath; } @SuppressWarnings("WeakerAccess") public static class RenameFileMenuActionDialog extends AbstractDialog { private static RenameFileMenuAction renameAction; private String filePath; public static RenameFileMenuActionDialog newInstance(String filePath, AbstractDialog.OnDialogClickListener onDialogClickListener) { RenameFileMenuActionDialog dlg = new RenameFileMenuActionDialog(); if (onDialogClickListener != null) { dlg.setOnDialogClickListener(onDialogClickListener); } dlg.filePath = filePath; // bad design having non empty constructors // no time to refactor now return dlg; } public RenameFileMenuActionDialog() { super(R.layout.dialog_default_input); } @Override public void onSaveInstanceState(Bundle outState) { if (filePath != null) { outState.putString("filePath", filePath); } super.onSaveInstanceState(outState); } @Override protected void initComponents(Dialog dlg, Bundle savedInstanceState) { if (savedInstanceState == null && filePath != null) { savedInstanceState = new Bundle(); savedInstanceState.putString("filePath", filePath); } else if (savedInstanceState != null && filePath == null) { filePath = savedInstanceState.getString("filePath"); } TextView title = findView(dlg, R.id.dialog_default_input_title); title.setText(R.string.rename); String name = FilenameUtils.getBaseName(filePath); EditText input = findView(dlg, R.id.dialog_default_input_text); input.setText(name); input.selectAll(); Button yesButton = findView(dlg, R.id.dialog_default_input_button_yes); yesButton.setText(android.R.string.ok); Button noButton = findView(dlg, R.id.dialog_default_input_button_no); noButton.setText(R.string.cancel); yesButton.setOnClickListener(new ButtonOnClickListener(this, true)); noButton.setOnClickListener(new ButtonOnClickListener(this, false)); } public String rename() { EditText input = findView(getDialog(), R.id.dialog_default_input_text); String newFileName = input.getText().toString(); if (RenameFileMenuActionDialog.renameAction != null) { RenameFileMenuActionDialog.renameAction.renameFile(newFileName); } dismiss(); return newFileName; } } private static class ButtonOnClickListener implements View.OnClickListener { final private RenameFileMenuActionDialog newRenameFileDialog; final private boolean rename; ButtonOnClickListener(RenameFileMenuActionDialog newRenameFileDialog, boolean rename) { this.newRenameFileDialog = newRenameFileDialog; this.rename = rename; } @Override public void onClick(View view) { String newFileName = null; if (!rename) { newRenameFileDialog.dismiss(); } else { newFileName = newRenameFileDialog.rename(); } if (newRenameFileDialog.getOnDialogClickListener() != null) { newRenameFileDialog.getOnDialogClickListener().onDialogClick(newFileName, rename ? 1 : 0); } } } }