| 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | package org.chromium.ui; |
| 6 | |
| 7 | import android.app.Activity; |
| 8 | import android.content.ContentResolver; |
| 9 | import android.content.Intent; |
| 10 | import android.database.Cursor; |
| 11 | import android.net.Uri; |
| 12 | import android.os.Environment; |
| 13 | import android.provider.MediaStore; |
| 14 | import android.text.TextUtils; |
| 15 | |
| 16 | import java.io.File; |
| 17 | import java.util.ArrayList; |
| 18 | import java.util.Arrays; |
| 19 | import java.util.List; |
| 20 | |
| 21 | import org.chromium.base.CalledByNative; |
| 22 | import org.chromium.base.JNINamespace; |
| 23 | import org.chromium.ui.WindowAndroid; |
| 24 | |
| 25 | /** |
| 26 | * A dialog that is triggered from a file input field that allows a user to select a file based on |
| 27 | * a set of accepted file types. The path of the selected file is passed to the native dialog. |
| 28 | */ |
| 29 | @JNINamespace("ui") |
| 30 | class SelectFileDialog implements WindowAndroid.IntentCallback{ |
| 31 | private static final String IMAGE_TYPE = "image/"; |
| 32 | private static final String VIDEO_TYPE = "video/"; |
| 33 | private static final String AUDIO_TYPE = "audio/"; |
| 34 | private static final String ALL_IMAGE_TYPES = IMAGE_TYPE + "*"; |
| 35 | private static final String ALL_VIDEO_TYPES = VIDEO_TYPE + "*"; |
| 36 | private static final String ALL_AUDIO_TYPES = AUDIO_TYPE + "*"; |
| 37 | private static final String ANY_TYPES = "*/*"; |
| 38 | private static final String CAPTURE_IMAGE_DIRECTORY = "browser-photos"; |
| 39 | |
| 40 | private final int mNativeSelectFileDialog; |
| 41 | private List<String> mFileTypes; |
| 42 | private boolean mCapture; |
| 43 | private Uri mCameraOutputUri; |
| 44 | |
| 45 | private SelectFileDialog(int nativeSelectFileDialog) { |
| 46 | mNativeSelectFileDialog = nativeSelectFileDialog; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Creates and starts an intent based on the passed fileTypes and capture value. |
| 51 | * @param fileTypes MIME types requested (i.e. "image/*") |
| 52 | * @param capture The capture value as described in http://www.w3.org/TR/html-media-capture/ |
| 53 | * @param window The WindowAndroid that can show intents |
| 54 | */ |
| 55 | @CalledByNative |
| 56 | private void selectFile(String[] fileTypes, boolean capture, WindowAndroid window) { |
| 57 | mFileTypes = new ArrayList<String>(Arrays.asList(fileTypes)); |
| 58 | mCapture = capture; |
| 59 | |
| 60 | Intent chooser = new Intent(Intent.ACTION_CHOOSER); |
| 61 | Intent camera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); |
| 62 | mCameraOutputUri = Uri.fromFile(getFileForImageCapture()); |
| 63 | camera.putExtra(MediaStore.EXTRA_OUTPUT, mCameraOutputUri); |
| 64 | Intent camcorder = new Intent(MediaStore.ACTION_VIDEO_CAPTURE); |
| 65 | Intent soundRecorder = new Intent( |
| 66 | MediaStore.Audio.Media.RECORD_SOUND_ACTION); |
| 67 | |
| 68 | // Quick check - if the |capture| parameter is set and |fileTypes| has the appropriate MIME |
| 69 | // type, we should just launch the appropriate intent. Otherwise build up a chooser based on |
| 70 | // the accept type and then display that to the user. |
| 71 | if (captureCamera()) { |
| 72 | if (window.showIntent(camera, this, R.string.low_memory_error)) return; |
| 73 | } else if (captureCamcorder()) { |
| 74 | if (window.showIntent(camcorder, this, R.string.low_memory_error)) return; |
| 75 | } else if (captureMicrophone()) { |
| 76 | if (window.showIntent(soundRecorder, this, R.string.low_memory_error)) return; |
| 77 | } |
| 78 | |
| 79 | Intent getContentIntent = new Intent(Intent.ACTION_GET_CONTENT); |
| 80 | getContentIntent.addCategory(Intent.CATEGORY_OPENABLE); |
| 81 | ArrayList<Intent> extraIntents = new ArrayList<Intent>(); |
| 82 | if (!noSpecificType()) { |
| 83 | // Create a chooser based on the accept type that was specified in the webpage. Note |
| 84 | // that if the web page specified multiple accept types, we will have built a generic |
| 85 | // chooser above. |
| 86 | if (shouldShowImageTypes()) { |
| 87 | extraIntents.add(camera); |
| 88 | getContentIntent.setType(ALL_IMAGE_TYPES); |
| 89 | } else if (shouldShowVideoTypes()) { |
| 90 | extraIntents.add(camcorder); |
| 91 | getContentIntent.setType(ALL_VIDEO_TYPES); |
| 92 | } else if (shouldShowAudioTypes()) { |
| 93 | extraIntents.add(soundRecorder); |
| 94 | getContentIntent.setType(ALL_AUDIO_TYPES); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | if (extraIntents.isEmpty()) { |
| 99 | // We couldn't resolve an accept type, so fallback to a generic chooser. |
| 100 | getContentIntent.setType(ANY_TYPES); |
| 101 | extraIntents.add(camera); |
| 102 | extraIntents.add(camcorder); |
| 103 | extraIntents.add(soundRecorder); |
| 104 | } |
| 105 | |
| 106 | chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, |
| 107 | extraIntents.toArray(new Intent[] { })); |
| 108 | |
| 109 | chooser.putExtra(Intent.EXTRA_INTENT, getContentIntent); |
| 110 | |
| 111 | if (!window.showIntent(chooser, this, R.string.low_memory_error)) { |
| 112 | onFileNotSelected(); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Get a file for the image capture in the CAPTURE_IMAGE_DIRECTORY directory. |
| 118 | */ |
| 119 | private File getFileForImageCapture() { |
| 120 | File externalDataDir = Environment.getExternalStoragePublicDirectory( |
| 121 | Environment.DIRECTORY_DCIM); |
| 122 | File cameraDataDir = new File(externalDataDir.getAbsolutePath() + |
| 123 | File.separator + CAPTURE_IMAGE_DIRECTORY); |
| 124 | if (!cameraDataDir.exists() && !cameraDataDir.mkdirs()) { |
| 125 | cameraDataDir = externalDataDir; |
| 126 | } |
| 127 | File photoFile = new File(cameraDataDir.getAbsolutePath() + |
| 128 | File.separator + System.currentTimeMillis() + ".jpg"); |
| 129 | return photoFile; |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Callback method to handle the intent results and pass on the path to the native |
| 134 | * SelectFileDialog. |
| 135 | * @param window The window that has access to the application activity. |
| 136 | * @param resultCode The result code whether the intent returned successfully. |
| 137 | * @param contentResolver The content resolver used to extract the path of the selected file. |
| 138 | * @param results The results of the requested intent. |
| 139 | */ |
| 140 | @Override |
| 141 | public void onIntentCompleted(WindowAndroid window, int resultCode, |
| 142 | ContentResolver contentResolver, Intent results) { |
| 143 | if (resultCode != Activity.RESULT_OK) { |
| 144 | onFileNotSelected(); |
| 145 | return; |
| 146 | } |
| 147 | boolean success = false; |
| 148 | if (results == null) { |
| 149 | // If we have a successful return but no data, then assume this is the camera returning |
| 150 | // the photo that we requested. |
| 151 | nativeOnFileSelected(mNativeSelectFileDialog, mCameraOutputUri.getPath()); |
| 152 | success = true; |
| 153 | |
| 154 | // Broadcast to the media scanner that there's a new photo on the device so it will |
| 155 | // show up right away in the gallery (rather than waiting until the next time the media |
| 156 | // scanner runs). |
| 157 | window.sendBroadcast(new Intent( |
| 158 | Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, mCameraOutputUri)); |
| 159 | } else { |
| 160 | // We get back a content:// URI from the system if the user picked a file from the |
| 161 | // gallery. The ContentView has functionality that will convert that content:// URI to |
| 162 | // a file path on disk that Chromium understands. |
| 163 | Cursor c = contentResolver.query(results.getData(), |
| 164 | new String[] { MediaStore.MediaColumns.DATA }, null, null, null); |
| 165 | if (c != null) { |
| 166 | if (c.getCount() == 1) { |
| 167 | c.moveToFirst(); |
| 168 | String path = c.getString(0); |
| 169 | if (path != null) { |
| 170 | // Not all providers support the MediaStore.DATA column. For example, |
| 171 | // Gallery3D (com.android.gallery3d.provider) does not support it for |
| 172 | // Picasa Web Album images. |
| 173 | nativeOnFileSelected(mNativeSelectFileDialog, path); |
| 174 | success = true; |
| 175 | } |
| 176 | } |
| 177 | c.close(); |
| 178 | } |
| 179 | } |
| 180 | if (!success) { |
| 181 | onFileNotSelected(); |
| 182 | window.showError(R.string.opening_file_error); |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | private void onFileNotSelected() { |
| 187 | nativeOnFileNotSelected(mNativeSelectFileDialog); |
| 188 | } |
| 189 | |
| 190 | private boolean noSpecificType() { |
| 191 | // We use a single Intent to decide the type of the file chooser we display to the user, |
| 192 | // which means we can only give it a single type. If there are multiple accept types |
| 193 | // specified, we will fallback to a generic chooser (unless a capture parameter has been |
| 194 | // specified, in which case we'll try to satisfy that first. |
| 195 | return mFileTypes.size() != 1 || mFileTypes.contains(ANY_TYPES); |
| 196 | } |
| 197 | |
| 198 | private boolean shouldShowTypes(String allTypes, String specificType) { |
| 199 | if (noSpecificType() || mFileTypes.contains(allTypes)) return true; |
| 200 | return acceptSpecificType(specificType); |
| 201 | } |
| 202 | |
| 203 | private boolean shouldShowImageTypes() { |
| 204 | return shouldShowTypes(ALL_IMAGE_TYPES,IMAGE_TYPE); |
| 205 | } |
| 206 | |
| 207 | private boolean shouldShowVideoTypes() { |
| 208 | return shouldShowTypes(ALL_VIDEO_TYPES, VIDEO_TYPE); |
| 209 | } |
| 210 | |
| 211 | private boolean shouldShowAudioTypes() { |
| 212 | return shouldShowTypes(ALL_AUDIO_TYPES, AUDIO_TYPE); |
| 213 | } |
| 214 | |
| 215 | private boolean acceptsSpecificType(String type) { |
| 216 | return mFileTypes.size() == 1 && TextUtils.equals(mFileTypes.get(0), type); |
| 217 | } |
| 218 | |
| 219 | private boolean captureCamera() { |
| 220 | return mCapture && acceptsSpecificType(ALL_IMAGE_TYPES); |
| 221 | } |
| 222 | |
| 223 | private boolean captureCamcorder() { |
| 224 | return mCapture && acceptsSpecificType(ALL_VIDEO_TYPES); |
| 225 | } |
| 226 | |
| 227 | private boolean captureMicrophone() { |
| 228 | return mCapture && acceptsSpecificType(ALL_AUDIO_TYPES); |
| 229 | } |
| 230 | |
| 231 | private boolean acceptSpecificType(String accept) { |
| 232 | for (String type : mFileTypes) { |
| 233 | if (type.startsWith(accept)) { |
| 234 | return true; |
| 235 | } |
| 236 | } |
| 237 | return false; |
| 238 | } |
| 239 | |
| 240 | @CalledByNative |
| 241 | private static SelectFileDialog create(int nativeSelectFileDialog) { |
| 242 | return new SelectFileDialog(nativeSelectFileDialog); |
| 243 | } |
| 244 | |
| 245 | private native void nativeOnFileSelected(int nativeSelectFileDialogImpl, |
| 246 | String filePath); |
| 247 | private native void nativeOnFileNotSelected(int nativeSelectFileDialogImpl); |
| 248 | } |