1 | package com.lamerman; |
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2 | |
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3 | import java.io.File; |
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4 | import java.util.ArrayList; |
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5 | import java.util.HashMap; |
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6 | import java.util.List; |
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7 | import java.util.TreeMap; |
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8 | |
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9 | import android.app.AlertDialog; |
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10 | import android.app.ListActivity; |
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11 | import android.content.DialogInterface; |
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12 | import android.os.Bundle; |
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13 | import android.view.KeyEvent; |
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14 | import android.view.View; |
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15 | import android.view.View.OnClickListener; |
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16 | import android.view.inputmethod.InputMethodManager; |
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17 | import android.widget.Button; |
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18 | import android.widget.EditText; |
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19 | import android.widget.LinearLayout; |
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20 | import android.widget.ListView; |
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21 | import android.widget.SimpleAdapter; |
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22 | import android.widget.TextView; |
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23 | |
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24 | /** |
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25 | * Activity para escolha de arquivos/diretorios. |
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26 | * |
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27 | * @author android |
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28 | * |
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29 | */ |
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30 | public class FileDialog extends ListActivity { |
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31 | |
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32 | /** |
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33 | * Chave de um item da lista de paths. |
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34 | */ |
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35 | private static final String ITEM_KEY = "key"; |
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36 | |
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37 | /** |
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38 | * Imagem de um item da lista de paths (diretorio ou arquivo). |
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39 | */ |
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40 | private static final String ITEM_IMAGE = "image"; |
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41 | |
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42 | /** |
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43 | * Diretorio raiz. |
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44 | */ |
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45 | private static final String ROOT = "/"; |
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46 | |
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47 | /** |
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48 | * Parametro de entrada da Activity: path inicial. Padrao: ROOT. |
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49 | */ |
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50 | public static final String START_PATH = "START_PATH"; |
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51 | |
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52 | /** |
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53 | * Parametro de entrada da Activity: filtro de formatos de arquivos. Padrao: |
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54 | * null. |
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55 | */ |
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56 | public static final String FORMAT_FILTER = "FORMAT_FILTER"; |
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57 | |
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58 | /** |
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59 | * Parametro de saida da Activity: path escolhido. Padrao: null. |
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60 | */ |
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61 | public static final String RESULT_PATH = "RESULT_PATH"; |
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62 | |
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63 | /** |
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64 | * Parametro de entrada da Activity: tipo de selecao: pode criar novos paths |
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65 | * ou nao. Padrao: nao permite. |
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66 | * |
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67 | * @see {@link SelectionMode} |
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68 | */ |
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69 | public static final String SELECTION_MODE = "SELECTION_MODE"; |
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70 | |
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71 | /** |
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72 | * Parametro de entrada da Activity: se e permitido escolher diretorios. |
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73 | * Padrao: falso. |
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74 | */ |
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75 | public static final String CAN_SELECT_DIR = "CAN_SELECT_DIR"; |
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76 | |
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77 | private List<String> path = null; |
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78 | private TextView myPath; |
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79 | private EditText mFileName; |
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80 | private ArrayList<HashMap<String, Object>> mList; |
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81 | |
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82 | private Button selectButton; |
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83 | |
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84 | private LinearLayout layoutSelect; |
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85 | private LinearLayout layoutCreate; |
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86 | private InputMethodManager inputManager; |
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87 | private String parentPath; |
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88 | private String currentPath = ROOT; |
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89 | |
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90 | private int selectionMode = SelectionMode.MODE_CREATE; |
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91 | |
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92 | private String[] formatFilter = null; |
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93 | |
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94 | private boolean canSelectDir = false; |
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95 | |
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96 | private File selectedFile; |
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97 | private HashMap<String, Integer> lastPositions = new HashMap<String, Integer>(); |
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98 | |
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99 | /** |
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100 | * Called when the activity is first created. Configura todos os parametros |
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101 | * de entrada e das VIEWS.. |
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102 | */ |
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103 | @Override |
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104 | public void onCreate(Bundle savedInstanceState) { |
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105 | super.onCreate(savedInstanceState); |
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106 | setResult(RESULT_CANCELED, getIntent()); |
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107 | |
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108 | setContentView(R.layout.file_dialog_main); |
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109 | myPath = (TextView) findViewById(R.id.path); |
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110 | mFileName = (EditText) findViewById(R.id.fdEditTextFile); |
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111 | |
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112 | inputManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE); |
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113 | |
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114 | selectButton = (Button) findViewById(R.id.fdButtonSelect); |
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115 | selectButton.setEnabled(false); |
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116 | selectButton.setOnClickListener(new OnClickListener() { |
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117 | |
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118 | @Override |
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119 | public void onClick(View v) { |
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120 | if (selectedFile != null) { |
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121 | getIntent().putExtra(RESULT_PATH, selectedFile.getPath()); |
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122 | setResult(RESULT_OK, getIntent()); |
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123 | finish(); |
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124 | } |
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125 | } |
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126 | }); |
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127 | |
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128 | final Button newButton = (Button) findViewById(R.id.fdButtonNew); |
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129 | newButton.setOnClickListener(new OnClickListener() { |
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130 | |
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131 | @Override |
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132 | public void onClick(View v) { |
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133 | setCreateVisible(v); |
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134 | |
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135 | mFileName.setText(""); |
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136 | mFileName.requestFocus(); |
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137 | } |
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138 | }); |
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139 | |
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140 | selectionMode = getIntent().getIntExtra(SELECTION_MODE, SelectionMode.MODE_CREATE); |
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141 | |
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142 | formatFilter = getIntent().getStringArrayExtra(FORMAT_FILTER); |
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143 | |
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144 | canSelectDir = getIntent().getBooleanExtra(CAN_SELECT_DIR, false); |
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145 | |
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146 | if (selectionMode == SelectionMode.MODE_OPEN) { |
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147 | newButton.setEnabled(false); |
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148 | } |
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149 | |
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150 | layoutSelect = (LinearLayout) findViewById(R.id.fdLinearLayoutSelect); |
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151 | layoutCreate = (LinearLayout) findViewById(R.id.fdLinearLayoutCreate); |
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152 | layoutCreate.setVisibility(View.GONE); |
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153 | |
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154 | final Button cancelButton = (Button) findViewById(R.id.fdButtonCancel); |
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155 | cancelButton.setOnClickListener(new OnClickListener() { |
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156 | |
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157 | @Override |
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158 | public void onClick(View v) { |
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159 | setSelectVisible(v); |
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160 | } |
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161 | |
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162 | }); |
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163 | final Button createButton = (Button) findViewById(R.id.fdButtonCreate); |
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164 | createButton.setOnClickListener(new OnClickListener() { |
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165 | |
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166 | @Override |
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167 | public void onClick(View v) { |
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168 | if (mFileName.getText().length() > 0) { |
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169 | getIntent().putExtra(RESULT_PATH, currentPath + "/" + mFileName.getText()); |
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170 | setResult(RESULT_OK, getIntent()); |
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171 | finish(); |
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172 | } |
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173 | } |
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174 | }); |
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175 | |
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176 | String startPath = getIntent().getStringExtra(START_PATH); |
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177 | startPath = startPath != null ? startPath : ROOT; |
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178 | if (canSelectDir) { |
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179 | File file = new File(startPath); |
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180 | selectedFile = file; |
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181 | selectButton.setEnabled(true); |
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182 | } |
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183 | getDir(startPath); |
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184 | } |
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185 | |
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186 | private void getDir(String dirPath) { |
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187 | |
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188 | boolean useAutoSelection = dirPath.length() < currentPath.length(); |
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189 | |
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190 | Integer position = lastPositions.get(parentPath); |
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191 | |
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192 | getDirImpl(dirPath); |
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193 | |
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194 | if (position != null && useAutoSelection) { |
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195 | getListView().setSelection(position); |
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196 | } |
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197 | |
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198 | } |
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199 | |
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200 | /** |
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201 | * Monta a estrutura de arquivos e diretorios filhos do diretorio fornecido. |
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202 | * |
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203 | * @param dirPath |
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204 | * Diretorio pai. |
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205 | */ |
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206 | private void getDirImpl(final String dirPath) { |
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207 | |
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208 | currentPath = dirPath; |
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209 | |
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210 | final List<String> item = new ArrayList<String>(); |
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211 | path = new ArrayList<String>(); |
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212 | mList = new ArrayList<HashMap<String, Object>>(); |
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213 | |
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214 | File f = new File(currentPath); |
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215 | File[] files = f.listFiles(); |
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216 | if (files == null) { |
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217 | currentPath = ROOT; |
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218 | f = new File(currentPath); |
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219 | files = f.listFiles(); |
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220 | } |
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221 | myPath.setText(getText(R.string.location) + ": " + currentPath); |
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222 | |
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223 | if (!currentPath.equals(ROOT)) { |
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224 | |
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225 | item.add(ROOT); |
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226 | addItem(ROOT, R.drawable.folder); |
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227 | path.add(ROOT); |
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228 | |
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229 | item.add("../"); |
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230 | addItem("../", R.drawable.folder); |
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231 | path.add(f.getParent()); |
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232 | parentPath = f.getParent(); |
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233 | |
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234 | } |
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235 | |
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236 | TreeMap<String, String> dirsMap = new TreeMap<String, String>(); |
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237 | TreeMap<String, String> dirsPathMap = new TreeMap<String, String>(); |
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238 | TreeMap<String, String> filesMap = new TreeMap<String, String>(); |
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239 | TreeMap<String, String> filesPathMap = new TreeMap<String, String>(); |
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240 | for (File file : files) { |
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241 | if (file.isDirectory()) { |
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242 | String dirName = file.getName(); |
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243 | dirsMap.put(dirName, dirName); |
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244 | dirsPathMap.put(dirName, file.getPath()); |
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245 | } else { |
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246 | final String fileName = file.getName(); |
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247 | final String fileNameLwr = fileName.toLowerCase(); |
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248 | // se ha um filtro de formatos, utiliza-o |
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249 | if (formatFilter != null) { |
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250 | boolean contains = false; |
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251 | for (int i = 0; i < formatFilter.length; i++) { |
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252 | final String formatLwr = formatFilter[i].toLowerCase(); |
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253 | if (fileNameLwr.endsWith(formatLwr)) { |
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254 | contains = true; |
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255 | break; |
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256 | } |
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257 | } |
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258 | if (contains) { |
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259 | filesMap.put(fileName, fileName); |
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260 | filesPathMap.put(fileName, file.getPath()); |
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261 | } |
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262 | // senao, adiciona todos os arquivos |
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263 | } else { |
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264 | filesMap.put(fileName, fileName); |
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265 | filesPathMap.put(fileName, file.getPath()); |
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266 | } |
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267 | } |
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268 | } |
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269 | item.addAll(dirsMap.tailMap("").values()); |
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270 | item.addAll(filesMap.tailMap("").values()); |
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271 | path.addAll(dirsPathMap.tailMap("").values()); |
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272 | path.addAll(filesPathMap.tailMap("").values()); |
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273 | |
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274 | SimpleAdapter fileList = new SimpleAdapter(this, mList, R.layout.file_dialog_row, new String[] { |
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275 | ITEM_KEY, ITEM_IMAGE }, new int[] { R.id.fdrowtext, R.id.fdrowimage }); |
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276 | |
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277 | for (String dir : dirsMap.tailMap("").values()) { |
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278 | addItem(dir, R.drawable.folder); |
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279 | } |
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280 | |
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281 | for (String file : filesMap.tailMap("").values()) { |
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282 | addItem(file, R.drawable.file); |
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283 | } |
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284 | |
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285 | fileList.notifyDataSetChanged(); |
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286 | |
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287 | setListAdapter(fileList); |
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288 | |
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289 | } |
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290 | |
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291 | private void addItem(String fileName, int imageId) { |
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292 | HashMap<String, Object> item = new HashMap<String, Object>(); |
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293 | item.put(ITEM_KEY, fileName); |
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294 | item.put(ITEM_IMAGE, imageId); |
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295 | mList.add(item); |
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296 | } |
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297 | |
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298 | /** |
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299 | * Quando clica no item da lista, deve-se: 1) Se for diretorio, abre seus |
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300 | * arquivos filhos; 2) Se puder escolher diretorio, define-o como sendo o |
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301 | * path escolhido. 3) Se for arquivo, define-o como path escolhido. 4) Ativa |
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302 | * botao de selecao. |
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303 | */ |
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304 | @Override |
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305 | protected void onListItemClick(ListView l, View v, int position, long id) { |
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306 | |
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307 | File file = new File(path.get(position)); |
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308 | |
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309 | setSelectVisible(v); |
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310 | |
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311 | if (file.isDirectory()) { |
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312 | selectButton.setEnabled(false); |
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313 | if (file.canRead()) { |
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314 | lastPositions.put(currentPath, position); |
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315 | getDir(path.get(position)); |
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316 | if (canSelectDir) { |
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317 | selectedFile = file; |
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318 | v.setSelected(true); |
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319 | selectButton.setEnabled(true); |
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320 | } |
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321 | } else { |
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322 | new AlertDialog.Builder(this).setIcon(R.drawable.icon) |
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323 | .setTitle("[" + file.getName() + "] " + getText(R.string.cant_read_folder)) |
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324 | .setPositiveButton("OK", new DialogInterface.OnClickListener() { |
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325 | |
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326 | @Override |
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327 | public void onClick(DialogInterface dialog, int which) { |
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328 | |
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329 | } |
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330 | }).show(); |
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331 | } |
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332 | } else { |
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333 | selectedFile = file; |
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334 | v.setSelected(true); |
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335 | selectButton.setEnabled(true); |
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336 | } |
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337 | } |
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338 | |
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339 | @Override |
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340 | public boolean onKeyDown(int keyCode, KeyEvent event) { |
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341 | if ((keyCode == KeyEvent.KEYCODE_BACK)) { |
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342 | selectButton.setEnabled(false); |
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343 | |
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344 | if (layoutCreate.getVisibility() == View.VISIBLE) { |
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345 | layoutCreate.setVisibility(View.GONE); |
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346 | layoutSelect.setVisibility(View.VISIBLE); |
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347 | } else { |
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348 | if (!currentPath.equals(ROOT)) { |
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349 | getDir(parentPath); |
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350 | } else { |
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351 | return super.onKeyDown(keyCode, event); |
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352 | } |
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353 | } |
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354 | |
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355 | return true; |
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356 | } else { |
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357 | return super.onKeyDown(keyCode, event); |
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358 | } |
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359 | } |
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360 | |
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361 | /** |
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362 | * Define se o botao de CREATE e visivel. |
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363 | * |
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364 | * @param v |
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365 | */ |
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366 | private void setCreateVisible(View v) { |
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367 | layoutCreate.setVisibility(View.VISIBLE); |
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368 | layoutSelect.setVisibility(View.GONE); |
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369 | |
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370 | inputManager.hideSoftInputFromWindow(v.getWindowToken(), 0); |
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371 | selectButton.setEnabled(false); |
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372 | } |
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373 | |
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374 | /** |
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375 | * Define se o botao de SELECT e visivel. |
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376 | * |
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377 | * @param v |
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378 | */ |
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379 | private void setSelectVisible(View v) { |
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380 | layoutCreate.setVisibility(View.GONE); |
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381 | layoutSelect.setVisibility(View.VISIBLE); |
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382 | |
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383 | inputManager.hideSoftInputFromWindow(v.getWindowToken(), 0); |
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384 | selectButton.setEnabled(false); |
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385 | } |
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386 | } |
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