| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.documentsui; |
| |
| import static com.android.documentsui.Shared.DEBUG; |
| import static com.android.documentsui.Shared.TAG; |
| import static com.android.documentsui.model.DocumentInfo.getCursorString; |
| |
| import android.content.ClipData; |
| import android.content.ClipDescription; |
| import android.content.ComponentName; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.res.Resources; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.provider.DocumentsContract; |
| import android.provider.DocumentsContract.Document; |
| import android.support.annotation.Nullable; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import com.android.documentsui.BaseActivity.DocumentContext; |
| import com.android.documentsui.model.DocumentInfo; |
| |
| /** |
| * Provides support for gather a list of quick-viewable files into a quick view intent. |
| */ |
| final class QuickViewIntentBuilder { |
| |
| private final DocumentInfo mDocument; |
| private final DocumentContext mContext; |
| |
| private final PackageManager mPkgManager; |
| private final Resources mResources; |
| |
| private ClipData mClipData; |
| private int mDocumentLocation; |
| |
| public QuickViewIntentBuilder( |
| PackageManager pkgManager, |
| Resources resources, |
| DocumentInfo doc, |
| DocumentContext context) { |
| |
| mPkgManager = pkgManager; |
| mResources = resources; |
| mDocument = doc; |
| mContext = context; |
| } |
| |
| /** |
| * Builds the intent for quick viewing. Short circuits building if a handler cannot |
| * be resolved; in this case {@code null} is returned. |
| */ |
| @Nullable Intent build() { |
| if (DEBUG) Log.d(TAG, "Preparing intent for doc:" + mDocument.documentId); |
| |
| String trustedPkg = mResources.getString(R.string.trusted_quick_viewer_package); |
| |
| Intent intent = new Intent(Intent.ACTION_QUICK_VIEW); |
| intent.setDataAndType(mDocument.derivedUri, mDocument.mimeType); |
| intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); |
| |
| if (TextUtils.isEmpty(trustedPkg)) { |
| if (hasRegisteredHandler(intent)) { |
| return intent; |
| } |
| } else { |
| intent.setPackage(trustedPkg); |
| if (hasRegisteredHandler(intent)) { |
| // We have a trusted handler. Load all of the docs into the intent. |
| Cursor cursor = mContext.getCursor(); |
| for (int i = 0; i < cursor.getCount(); i++) { |
| onNextItem(i, cursor); |
| } |
| intent.putExtra(Intent.EXTRA_INDEX, mDocumentLocation); |
| intent.setClipData(mClipData); |
| |
| return intent; |
| } else { |
| Log.e(TAG, "Can't resolve trusted quick view package: " + trustedPkg); |
| } |
| } |
| |
| return null; |
| } |
| |
| private boolean hasRegisteredHandler(Intent intent) { |
| // Try to resolve the intent. If a matching app isn't installed, it won't resolve. |
| return intent.resolveActivity(mPkgManager) != null; |
| } |
| |
| private void onNextItem(int index, Cursor cursor) { |
| cursor.moveToPosition(index); |
| |
| String mimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); |
| if (Document.MIME_TYPE_DIR.equals(mimeType)) { |
| return; |
| } |
| |
| String id = getCursorString(cursor, Document.COLUMN_DOCUMENT_ID); |
| String authority = getCursorString(cursor, RootCursorWrapper.COLUMN_AUTHORITY); |
| Uri uri = DocumentsContract.buildDocumentUri(authority, id); |
| if (DEBUG) Log.d(TAG, "Including file[" + id + "] @ " + uri); |
| |
| if (id.equals(mDocument.documentId)) { |
| if (DEBUG) Log.d(TAG, "Found starting point for QV. " + index); |
| mDocumentLocation = index; |
| } |
| |
| ClipData.Item item = new ClipData.Item(uri); |
| if (mClipData == null) { |
| mClipData = new ClipData( |
| "URIs", new String[]{ClipDescription.MIMETYPE_TEXT_URILIST}, item); |
| } else { |
| mClipData.addItem(item); |
| } |
| } |
| } |