249 lines
10 KiB
Java
Executable File
249 lines
10 KiB
Java
Executable File
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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package org.chromium.ui;
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import android.app.Activity;
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import android.content.ContentResolver;
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import android.content.Intent;
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import android.database.Cursor;
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import android.net.Uri;
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import android.os.Environment;
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import android.provider.MediaStore;
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import android.text.TextUtils;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import org.chromium.base.CalledByNative;
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import org.chromium.base.JNINamespace;
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import org.chromium.ui.WindowAndroid;
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/**
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* A dialog that is triggered from a file input field that allows a user to select a file based on
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* a set of accepted file types. The path of the selected file is passed to the native dialog.
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*/
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@JNINamespace("ui")
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class SelectFileDialog implements WindowAndroid.IntentCallback{
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private static final String IMAGE_TYPE = "image/";
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private static final String VIDEO_TYPE = "video/";
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private static final String AUDIO_TYPE = "audio/";
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private static final String ALL_IMAGE_TYPES = IMAGE_TYPE + "*";
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private static final String ALL_VIDEO_TYPES = VIDEO_TYPE + "*";
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private static final String ALL_AUDIO_TYPES = AUDIO_TYPE + "*";
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private static final String ANY_TYPES = "*/*";
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private static final String CAPTURE_IMAGE_DIRECTORY = "browser-photos";
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private final int mNativeSelectFileDialog;
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private List<String> mFileTypes;
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private boolean mCapture;
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private Uri mCameraOutputUri;
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private SelectFileDialog(int nativeSelectFileDialog) {
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mNativeSelectFileDialog = nativeSelectFileDialog;
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}
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/**
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* Creates and starts an intent based on the passed fileTypes and capture value.
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* @param fileTypes MIME types requested (i.e. "image/*")
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* @param capture The capture value as described in http://www.w3.org/TR/html-media-capture/
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* @param window The WindowAndroid that can show intents
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*/
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@CalledByNative
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private void selectFile(String[] fileTypes, boolean capture, WindowAndroid window) {
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mFileTypes = new ArrayList<String>(Arrays.asList(fileTypes));
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mCapture = capture;
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Intent chooser = new Intent(Intent.ACTION_CHOOSER);
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Intent camera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
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mCameraOutputUri = Uri.fromFile(getFileForImageCapture());
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camera.putExtra(MediaStore.EXTRA_OUTPUT, mCameraOutputUri);
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Intent camcorder = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
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Intent soundRecorder = new Intent(
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MediaStore.Audio.Media.RECORD_SOUND_ACTION);
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// Quick check - if the |capture| parameter is set and |fileTypes| has the appropriate MIME
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// type, we should just launch the appropriate intent. Otherwise build up a chooser based on
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// the accept type and then display that to the user.
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if (captureCamera()) {
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if (window.showIntent(camera, this, R.string.low_memory_error)) return;
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} else if (captureCamcorder()) {
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if (window.showIntent(camcorder, this, R.string.low_memory_error)) return;
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} else if (captureMicrophone()) {
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if (window.showIntent(soundRecorder, this, R.string.low_memory_error)) return;
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}
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Intent getContentIntent = new Intent(Intent.ACTION_GET_CONTENT);
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getContentIntent.addCategory(Intent.CATEGORY_OPENABLE);
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ArrayList<Intent> extraIntents = new ArrayList<Intent>();
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if (!noSpecificType()) {
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// Create a chooser based on the accept type that was specified in the webpage. Note
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// that if the web page specified multiple accept types, we will have built a generic
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// chooser above.
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if (shouldShowImageTypes()) {
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extraIntents.add(camera);
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getContentIntent.setType(ALL_IMAGE_TYPES);
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} else if (shouldShowVideoTypes()) {
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extraIntents.add(camcorder);
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getContentIntent.setType(ALL_VIDEO_TYPES);
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} else if (shouldShowAudioTypes()) {
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extraIntents.add(soundRecorder);
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getContentIntent.setType(ALL_AUDIO_TYPES);
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}
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}
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if (extraIntents.isEmpty()) {
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// We couldn't resolve an accept type, so fallback to a generic chooser.
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getContentIntent.setType(ANY_TYPES);
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extraIntents.add(camera);
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extraIntents.add(camcorder);
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extraIntents.add(soundRecorder);
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}
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chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS,
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extraIntents.toArray(new Intent[] { }));
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chooser.putExtra(Intent.EXTRA_INTENT, getContentIntent);
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if (!window.showIntent(chooser, this, R.string.low_memory_error)) {
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onFileNotSelected();
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}
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}
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/**
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* Get a file for the image capture in the CAPTURE_IMAGE_DIRECTORY directory.
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*/
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private File getFileForImageCapture() {
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File externalDataDir = Environment.getExternalStoragePublicDirectory(
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Environment.DIRECTORY_DCIM);
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File cameraDataDir = new File(externalDataDir.getAbsolutePath() +
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File.separator + CAPTURE_IMAGE_DIRECTORY);
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if (!cameraDataDir.exists() && !cameraDataDir.mkdirs()) {
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cameraDataDir = externalDataDir;
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}
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File photoFile = new File(cameraDataDir.getAbsolutePath() +
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File.separator + System.currentTimeMillis() + ".jpg");
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return photoFile;
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}
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/**
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* Callback method to handle the intent results and pass on the path to the native
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* SelectFileDialog.
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* @param window The window that has access to the application activity.
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* @param resultCode The result code whether the intent returned successfully.
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* @param contentResolver The content resolver used to extract the path of the selected file.
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* @param results The results of the requested intent.
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*/
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@Override
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public void onIntentCompleted(WindowAndroid window, int resultCode,
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ContentResolver contentResolver, Intent results) {
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if (resultCode != Activity.RESULT_OK) {
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onFileNotSelected();
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return;
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}
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boolean success = false;
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if (results == null) {
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// If we have a successful return but no data, then assume this is the camera returning
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// the photo that we requested.
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nativeOnFileSelected(mNativeSelectFileDialog, mCameraOutputUri.getPath());
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success = true;
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// Broadcast to the media scanner that there's a new photo on the device so it will
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// show up right away in the gallery (rather than waiting until the next time the media
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// scanner runs).
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window.sendBroadcast(new Intent(
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Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, mCameraOutputUri));
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} else {
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// We get back a content:// URI from the system if the user picked a file from the
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// gallery. The ContentView has functionality that will convert that content:// URI to
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// a file path on disk that Chromium understands.
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Cursor c = contentResolver.query(results.getData(),
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new String[] { MediaStore.MediaColumns.DATA }, null, null, null);
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if (c != null) {
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if (c.getCount() == 1) {
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c.moveToFirst();
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String path = c.getString(0);
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if (path != null) {
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// Not all providers support the MediaStore.DATA column. For example,
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// Gallery3D (com.android.gallery3d.provider) does not support it for
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// Picasa Web Album images.
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nativeOnFileSelected(mNativeSelectFileDialog, path);
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success = true;
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}
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}
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c.close();
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}
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}
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if (!success) {
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onFileNotSelected();
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window.showError(R.string.opening_file_error);
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}
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}
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private void onFileNotSelected() {
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nativeOnFileNotSelected(mNativeSelectFileDialog);
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}
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private boolean noSpecificType() {
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// We use a single Intent to decide the type of the file chooser we display to the user,
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// which means we can only give it a single type. If there are multiple accept types
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// specified, we will fallback to a generic chooser (unless a capture parameter has been
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// specified, in which case we'll try to satisfy that first.
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return mFileTypes.size() != 1 || mFileTypes.contains(ANY_TYPES);
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}
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private boolean shouldShowTypes(String allTypes, String specificType) {
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if (noSpecificType() || mFileTypes.contains(allTypes)) return true;
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return acceptSpecificType(specificType);
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}
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private boolean shouldShowImageTypes() {
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return shouldShowTypes(ALL_IMAGE_TYPES,IMAGE_TYPE);
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}
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private boolean shouldShowVideoTypes() {
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return shouldShowTypes(ALL_VIDEO_TYPES, VIDEO_TYPE);
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}
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private boolean shouldShowAudioTypes() {
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return shouldShowTypes(ALL_AUDIO_TYPES, AUDIO_TYPE);
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}
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private boolean acceptsSpecificType(String type) {
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return mFileTypes.size() == 1 && TextUtils.equals(mFileTypes.get(0), type);
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}
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private boolean captureCamera() {
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return mCapture && acceptsSpecificType(ALL_IMAGE_TYPES);
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}
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private boolean captureCamcorder() {
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return mCapture && acceptsSpecificType(ALL_VIDEO_TYPES);
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}
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private boolean captureMicrophone() {
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return mCapture && acceptsSpecificType(ALL_AUDIO_TYPES);
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}
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private boolean acceptSpecificType(String accept) {
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for (String type : mFileTypes) {
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if (type.startsWith(accept)) {
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return true;
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}
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}
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return false;
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}
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@CalledByNative
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private static SelectFileDialog create(int nativeSelectFileDialog) {
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return new SelectFileDialog(nativeSelectFileDialog);
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}
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private native void nativeOnFileSelected(int nativeSelectFileDialogImpl,
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String filePath);
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private native void nativeOnFileNotSelected(int nativeSelectFileDialogImpl);
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}
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