package com.lamerman; import java.io.File; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.TreeMap; import android.app.AlertDialog; import android.app.ListActivity; import android.content.DialogInterface; import android.os.Bundle; import android.view.KeyEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.inputmethod.InputMethodManager; import android.widget.Button; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.TextView; import de.blinkt.openvpn.R; /** * Activity para escolha de arquivos/diretorios. * * @author android * */ public class FileDialog extends ListActivity { /** * Chave de um item da lista de paths. */ private static final String ITEM_KEY = "key"; /** * Imagem de um item da lista de paths (diretorio ou arquivo). */ private static final String ITEM_IMAGE = "image"; /** * Diretorio raiz. */ private static final String ROOT = "/"; /** * Parametro de entrada da Activity: path inicial. Padrao: ROOT. */ public static final String START_PATH = "START_PATH"; /** * Parametro de entrada da Activity: filtro de formatos de arquivos. Padrao: * null. */ public static final String FORMAT_FILTER = "FORMAT_FILTER"; /** * Parametro de saida da Activity: path escolhido. Padrao: null. */ public static final String RESULT_PATH = "RESULT_PATH"; /** * Parametro de entrada da Activity: tipo de selecao: pode criar novos paths * ou nao. Padrao: nao permite. * * @see {@link SelectionMode} */ public static final String SELECTION_MODE = "SELECTION_MODE"; /** * Parametro de entrada da Activity: se e permitido escolher diretorios. * Padrao: falso. */ public static final String CAN_SELECT_DIR = "CAN_SELECT_DIR"; private List path = null; private TextView myPath; private EditText mFileName; private ArrayList> mList; private Button selectButton; private LinearLayout layoutSelect; private LinearLayout layoutCreate; private InputMethodManager inputManager; private String parentPath; private String currentPath = ROOT; private int selectionMode = SelectionMode.MODE_CREATE; private String[] formatFilter = null; private boolean canSelectDir = false; private File selectedFile; private HashMap lastPositions = new HashMap(); /** * Called when the activity is first created. Configura todos os parametros * de entrada e das VIEWS.. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setResult(RESULT_CANCELED, getIntent()); setContentView(R.layout.file_dialog_main); myPath = (TextView) findViewById(R.id.path); mFileName = (EditText) findViewById(R.id.fdEditTextFile); inputManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE); selectButton = (Button) findViewById(R.id.fdButtonSelect); selectButton.setEnabled(false); selectButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (selectedFile != null) { getIntent().putExtra(RESULT_PATH, selectedFile.getPath()); setResult(RESULT_OK, getIntent()); finish(); } } }); final Button newButton = (Button) findViewById(R.id.fdButtonNew); newButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { setCreateVisible(v); mFileName.setText(""); mFileName.requestFocus(); } }); selectionMode = getIntent().getIntExtra(SELECTION_MODE, SelectionMode.MODE_CREATE); formatFilter = getIntent().getStringArrayExtra(FORMAT_FILTER); canSelectDir = getIntent().getBooleanExtra(CAN_SELECT_DIR, false); if (selectionMode == SelectionMode.MODE_OPEN) { newButton.setEnabled(false); newButton.setVisibility(View.GONE); } layoutSelect = (LinearLayout) findViewById(R.id.fdLinearLayoutSelect); layoutCreate = (LinearLayout) findViewById(R.id.fdLinearLayoutCreate); layoutCreate.setVisibility(View.GONE); final Button cancelButton = (Button) findViewById(R.id.fdButtonCancel); cancelButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { setSelectVisible(v); } }); final Button createButton = (Button) findViewById(R.id.fdButtonCreate); createButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (mFileName.getText().length() > 0) { getIntent().putExtra(RESULT_PATH, currentPath + "/" + mFileName.getText()); setResult(RESULT_OK, getIntent()); finish(); } } }); String startPath = getIntent().getStringExtra(START_PATH); startPath = startPath != null ? startPath : ROOT; if (canSelectDir) { File file = new File(startPath); selectedFile = file; selectButton.setEnabled(true); } getDir(startPath); } private void getDir(String dirPath) { boolean useAutoSelection = dirPath.length() < currentPath.length(); Integer position = lastPositions.get(parentPath); getDirImpl(dirPath); if (position != null && useAutoSelection) { getListView().setSelection(position); } } /** * Monta a estrutura de arquivos e diretorios filhos do diretorio fornecido. * * @param dirPath * Diretorio pai. */ private void getDirImpl(final String dirPath) { currentPath = dirPath; final List item = new ArrayList(); path = new ArrayList(); mList = new ArrayList>(); File f = new File(currentPath); File[] files = f.listFiles(); if (files == null) { currentPath = ROOT; f = new File(currentPath); files = f.listFiles(); } myPath.setText(getText(R.string.location) + ": " + currentPath); if (!currentPath.equals(ROOT)) { item.add(ROOT); addItem(ROOT, R.drawable.folder); path.add(ROOT); item.add("../"); addItem("../", R.drawable.folder); path.add(f.getParent()); parentPath = f.getParent(); } TreeMap dirsMap = new TreeMap(); TreeMap dirsPathMap = new TreeMap(); TreeMap filesMap = new TreeMap(); TreeMap filesPathMap = new TreeMap(); for (File file : files) { if (file.isDirectory()) { String dirName = file.getName(); dirsMap.put(dirName, dirName); dirsPathMap.put(dirName, file.getPath()); } else { final String fileName = file.getName(); final String fileNameLwr = fileName.toLowerCase(); // se ha um filtro de formatos, utiliza-o if (formatFilter != null) { boolean contains = false; for (int i = 0; i < formatFilter.length; i++) { final String formatLwr = formatFilter[i].toLowerCase(); if (fileNameLwr.endsWith(formatLwr)) { contains = true; break; } } if (contains) { filesMap.put(fileName, fileName); filesPathMap.put(fileName, file.getPath()); } // senao, adiciona todos os arquivos } else { filesMap.put(fileName, fileName); filesPathMap.put(fileName, file.getPath()); } } } item.addAll(dirsMap.tailMap("").values()); item.addAll(filesMap.tailMap("").values()); path.addAll(dirsPathMap.tailMap("").values()); path.addAll(filesPathMap.tailMap("").values()); SimpleAdapter fileList = new SimpleAdapter(this, mList, R.layout.file_dialog_row, new String[] { ITEM_KEY, ITEM_IMAGE }, new int[] { R.id.fdrowtext, R.id.fdrowimage }); for (String dir : dirsMap.tailMap("").values()) { addItem(dir, R.drawable.folder); } for (String file : filesMap.tailMap("").values()) { addItem(file, R.drawable.file); } fileList.notifyDataSetChanged(); setListAdapter(fileList); } private void addItem(String fileName, int imageId) { HashMap item = new HashMap(); item.put(ITEM_KEY, fileName); item.put(ITEM_IMAGE, imageId); mList.add(item); } /** * Quando clica no item da lista, deve-se: 1) Se for diretorio, abre seus * arquivos filhos; 2) Se puder escolher diretorio, define-o como sendo o * path escolhido. 3) Se for arquivo, define-o como path escolhido. 4) Ativa * botao de selecao. */ @Override protected void onListItemClick(ListView l, View v, int position, long id) { File file = new File(path.get(position)); setSelectVisible(v); if (file.isDirectory()) { selectButton.setEnabled(false); if (file.canRead()) { lastPositions.put(currentPath, position); getDir(path.get(position)); if (canSelectDir) { selectedFile = file; v.setSelected(true); selectButton.setEnabled(true); } } else { new AlertDialog.Builder(this).setIcon(R.drawable.icon) .setTitle("[" + file.getName() + "] " + getText(R.string.cant_read_folder)) .setPositiveButton("OK", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }).show(); } } else { selectedFile = file; v.setSelected(true); selectButton.setEnabled(true); } } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if ((keyCode == KeyEvent.KEYCODE_BACK)) { selectButton.setEnabled(false); if (layoutCreate.getVisibility() == View.VISIBLE) { layoutCreate.setVisibility(View.GONE); layoutSelect.setVisibility(View.VISIBLE); } else { if (!currentPath.equals(ROOT)) { getDir(parentPath); } else { return super.onKeyDown(keyCode, event); } } return true; } else { return super.onKeyDown(keyCode, event); } } /** * Define se o botao de CREATE e visivel. * * @param v */ private void setCreateVisible(View v) { layoutCreate.setVisibility(View.VISIBLE); layoutSelect.setVisibility(View.GONE); inputManager.hideSoftInputFromWindow(v.getWindowToken(), 0); selectButton.setEnabled(false); } /** * Define se o botao de SELECT e visivel. * * @param v */ private void setSelectVisible(View v) { layoutCreate.setVisibility(View.GONE); layoutSelect.setVisibility(View.VISIBLE); inputManager.hideSoftInputFromWindow(v.getWindowToken(), 0); selectButton.setEnabled(false); } }