MessageViewFragmentBase.java revision 91a1cf1db0b2a6ee72e467c37e7845584354eaf2
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.email.activity; 18 19import com.android.email.Controller; 20import com.android.email.ControllerResultUiThreadWrapper; 21import com.android.email.Email; 22import com.android.email.Preferences; 23import com.android.email.R; 24import com.android.email.Throttle; 25import com.android.email.Utility; 26import com.android.email.mail.Address; 27import com.android.email.mail.MessagingException; 28import com.android.email.mail.internet.EmailHtmlUtil; 29import com.android.email.mail.internet.MimeUtility; 30import com.android.email.provider.AttachmentProvider; 31import com.android.email.provider.EmailContent.Attachment; 32import com.android.email.provider.EmailContent.Body; 33import com.android.email.provider.EmailContent.Mailbox; 34import com.android.email.provider.EmailContent.Message; 35import com.android.email.service.AttachmentDownloadService; 36 37import org.apache.commons.io.IOUtils; 38 39import android.app.Activity; 40import android.app.Fragment; 41import android.app.LoaderManager.LoaderCallbacks; 42import android.content.ActivityNotFoundException; 43import android.content.ContentResolver; 44import android.content.ContentUris; 45import android.content.Context; 46import android.content.Intent; 47import android.content.Loader; 48import android.content.pm.PackageManager; 49import android.content.pm.ResolveInfo; 50import android.content.res.Resources; 51import android.database.ContentObserver; 52import android.graphics.Bitmap; 53import android.graphics.BitmapFactory; 54import android.net.ConnectivityManager; 55import android.net.NetworkInfo; 56import android.net.Uri; 57import android.os.AsyncTask; 58import android.os.Bundle; 59import android.os.Environment; 60import android.os.Handler; 61import android.provider.ContactsContract; 62import android.provider.ContactsContract.QuickContact; 63import android.provider.Settings; 64import android.text.SpannableStringBuilder; 65import android.text.TextUtils; 66import android.text.format.DateUtils; 67import android.util.Log; 68import android.util.Patterns; 69import android.view.LayoutInflater; 70import android.view.View; 71import android.view.ViewGroup; 72import android.webkit.WebSettings; 73import android.webkit.WebView; 74import android.webkit.WebViewClient; 75import android.widget.Button; 76import android.widget.ImageView; 77import android.widget.LinearLayout; 78import android.widget.ProgressBar; 79import android.widget.TextView; 80 81import java.io.File; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.io.InputStream; 85import java.io.OutputStream; 86import java.util.Formatter; 87import java.util.List; 88import java.util.regex.Matcher; 89import java.util.regex.Pattern; 90 91// TODO Better handling of config changes. 92// - Restore "Show pictures" state, scroll position and current tab 93// - Retain the content; don't kick 3 async tasks every time 94 95/** 96 * Base class for {@link MessageViewFragment} and {@link MessageFileViewFragment}. 97 * 98 * See {@link MessageViewBase} for the class relation diagram. 99 */ 100public abstract class MessageViewFragmentBase extends Fragment implements View.OnClickListener { 101 private static final int PHOTO_LOADER_ID = 1; 102 private Context mContext; 103 104 // Regex that matches start of img tag. '<(?i)img\s+'. 105 private static final Pattern IMG_TAG_START_REGEX = Pattern.compile("<(?i)img\\s+"); 106 // Regex that matches Web URL protocol part as case insensitive. 107 private static final Pattern WEB_URL_PROTOCOL = Pattern.compile("(?i)http|https://"); 108 109 private static int PREVIEW_ICON_WIDTH = 62; 110 private static int PREVIEW_ICON_HEIGHT = 62; 111 112 private TextView mSubjectView; 113 private TextView mFromNameView; 114 private TextView mFromAddressView; 115 private TextView mDateTimeView; 116 private TextView mAddressesView; 117 private WebView mMessageContentView; 118 private LinearLayout mAttachments; 119 private View mTabSection; 120 private ImageView mFromBadge; 121 private ImageView mSenderPresenceView; 122 private View mMainView; 123 private View mLoadingProgress; 124 private Button mShowDetailsButton; 125 126 private TextView mMessageTab; 127 private TextView mAttachmentTab; 128 private TextView mInviteTab; 129 // It is not really a tab, but looks like one of them. 130 private TextView mShowPicturesTab; 131 132 private View mAttachmentsScroll; 133 private View mInviteScroll; 134 135 private long mAccountId = -1; 136 private long mMessageId = -1; 137 private Message mMessage; 138 139 private LoadMessageTask mLoadMessageTask; 140 private ReloadMessageTask mReloadMessageTask; 141 private LoadBodyTask mLoadBodyTask; 142 private LoadAttachmentsTask mLoadAttachmentsTask; 143 144 private Controller mController; 145 private ControllerResultUiThreadWrapper<ControllerResults> mControllerCallback; 146 147 // contains the HTML body. Is used by LoadAttachmentTask to display inline images. 148 // is null most of the time, is used transiently to pass info to LoadAttachementTask 149 private String mHtmlTextRaw; 150 151 // contains the HTML content as set in WebView. 152 private String mHtmlTextWebView; 153 154 private boolean mResumed; 155 private boolean mLoadWhenResumed; 156 157 private boolean mIsMessageLoadedForTest; 158 159 private MessageObserver mMessageObserver; 160 161 private static final int CONTACT_STATUS_STATE_UNLOADED = 0; 162 private static final int CONTACT_STATUS_STATE_UNLOADED_TRIGGERED = 1; 163 private static final int CONTACT_STATUS_STATE_LOADED = 2; 164 165 private int mContactStatusState; 166 private Uri mQuickContactLookupUri; 167 168 /** Flag for {@link #mTabFlags}: Message has attachment(s) */ 169 protected static final int TAB_FLAGS_HAS_ATTACHMENT = 1; 170 171 /** 172 * Flag for {@link #mTabFlags}: Message contains invite. This flag is only set by 173 * {@link MessageViewFragment}. 174 */ 175 protected static final int TAB_FLAGS_HAS_INVITE = 2; 176 177 /** Flag for {@link #mTabFlags}: Message contains pictures */ 178 protected static final int TAB_FLAGS_HAS_PICTURES = 4; 179 180 /** Flag for {@link #mTabFlags}: "Show pictures" has already been pressed */ 181 protected static final int TAB_FLAGS_PICTURE_LOADED = 8; 182 183 /** 184 * Flags to control the tabs. 185 * @see #updateTabFlags(int) 186 */ 187 private int mTabFlags; 188 189 /** # of attachments in the current message */ 190 private int mAttachmentCount; 191 192 // Use (random) large values, to avoid confusion with TAB_FLAGS_* 193 protected static final int TAB_MESSAGE = 101; 194 protected static final int TAB_INVITE = 102; 195 protected static final int TAB_ATTACHMENT = 103; 196 197 /** 198 * Currently visible tab. Any of {@link #TAB_MESSAGE}, {@link #TAB_INVITE} or 199 * {@link #TAB_ATTACHMENT}. 200 * 201 * Note we don't retain this value through configuration changes, as restoring the current tab 202 * would be clumsy with the current implementation where we load Message/Body/Attachments 203 * separately. (e.g. # of attachments can't be obtained quickly enough to update the UI 204 * after screen rotation.) 205 */ 206 private int mCurrentTab; 207 208 /** 209 * Zoom scales for webview. Values correspond to {@link Preferences#TEXT_ZOOM_TINY}.. 210 * {@link Preferences#TEXT_ZOOM_HUGE}. 211 */ 212 private static final float[] ZOOM_SCALE_ARRAY = new float[] {0.8f, 0.9f, 1.0f, 1.2f, 1.5f}; 213 214 /** 215 * Encapsulates known information about a single attachment. 216 * 217 * TODO: This should have methods to encapsulate the entire state graph of loading, canceling, 218 * viewing, and saving. 219 */ 220 private static class AttachmentInfo { 221 public String name; 222 public String contentType; 223 public long size; 224 public long attachmentId; 225 public Button viewButton; 226 public Button saveButton; 227 public Button loadButton; 228 public Button cancelButton; 229 public ImageView iconView; 230 public ProgressBar progressView; 231 public boolean allowView; 232 public boolean allowSave; 233 public boolean isLoaded; 234 } 235 236 public interface Callback { 237 /** Called when the fragment is about to show up, or show a different message. */ 238 public void onMessageViewShown(int mailboxType); 239 240 /** Called when the fragment is about to be destroyed. */ 241 public void onMessageViewGone(); 242 243 /** 244 * Called when a link in a message is clicked. 245 * 246 * @param url link url that's clicked. 247 * @return true if handled, false otherwise. 248 */ 249 public boolean onUrlInMessageClicked(String url); 250 251 /** 252 * Called when the message specified doesn't exist, or is deleted/moved. 253 */ 254 public void onMessageNotExists(); 255 256 /** Called when it starts loading a message. */ 257 public void onLoadMessageStarted(); 258 259 /** Called when it successfully finishes loading a message. */ 260 public void onLoadMessageFinished(); 261 262 /** Called when an error occurred during loading a message. */ 263 public void onLoadMessageError(String errorMessage); 264 } 265 266 public static class EmptyCallback implements Callback { 267 public static final Callback INSTANCE = new EmptyCallback(); 268 @Override public void onMessageViewShown(int mailboxType) {} 269 @Override public void onMessageViewGone() {} 270 @Override public void onLoadMessageError(String errorMessage) {} 271 @Override public void onLoadMessageFinished() {} 272 @Override public void onLoadMessageStarted() {} 273 @Override public void onMessageNotExists() {} 274 @Override 275 public boolean onUrlInMessageClicked(String url) { 276 return false; 277 } 278 } 279 280 private Callback mCallback = EmptyCallback.INSTANCE; 281 282 @Override 283 public void onCreate(Bundle savedInstanceState) { 284 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 285 Log.d(Email.LOG_TAG, "MessageViewFragment onCreate"); 286 } 287 super.onCreate(savedInstanceState); 288 289 mContext = getActivity().getApplicationContext(); 290 291 mControllerCallback = new ControllerResultUiThreadWrapper<ControllerResults>( 292 new Handler(), new ControllerResults()); 293 294 mController = Controller.getInstance(mContext); 295 mMessageObserver = new MessageObserver(new Handler(), mContext); 296 } 297 298 @Override 299 public View onCreateView( 300 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 301 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 302 Log.d(Email.LOG_TAG, "MessageViewFragment onCreateView"); 303 } 304 final View view = inflater.inflate(R.layout.message_view_fragment, container, false); 305 306 mSubjectView = (TextView) view.findViewById(R.id.subject); 307 mFromNameView = (TextView) view.findViewById(R.id.from_name); 308 mFromAddressView = (TextView) view.findViewById(R.id.from_address); 309 mAddressesView = (TextView) view.findViewById(R.id.addresses); 310 mDateTimeView = (TextView) view.findViewById(R.id.datetime); 311 mMessageContentView = (WebView) view.findViewById(R.id.message_content); 312 mAttachments = (LinearLayout) view.findViewById(R.id.attachments); 313 mTabSection = view.findViewById(R.id.message_tabs_section); 314 mFromBadge = (ImageView) view.findViewById(R.id.badge); 315 mSenderPresenceView = (ImageView) view.findViewById(R.id.presence); 316 mMainView = view.findViewById(R.id.main_panel); 317 mLoadingProgress = view.findViewById(R.id.loading_progress); 318 mShowDetailsButton = (Button) view.findViewById(R.id.show_details); 319 320 mFromNameView.setOnClickListener(this); 321 mFromAddressView.setOnClickListener(this); 322 mFromBadge.setOnClickListener(this); 323 mSenderPresenceView.setOnClickListener(this); 324 325 mMessageTab = (TextView) view.findViewById(R.id.show_message); 326 mAttachmentTab = (TextView) view.findViewById(R.id.show_attachments); 327 mShowPicturesTab = (TextView) view.findViewById(R.id.show_pictures); 328 // Invite is only used in MessageViewFragment, but visibility is controlled here. 329 mInviteTab = (TextView) view.findViewById(R.id.show_invite); 330 331 mMessageTab.setOnClickListener(this); 332 mAttachmentTab.setOnClickListener(this); 333 mShowPicturesTab.setOnClickListener(this); 334 mInviteTab.setOnClickListener(this); 335 mShowDetailsButton.setOnClickListener(this); 336 337 mAttachmentsScroll = view.findViewById(R.id.attachments_scroll); 338 mInviteScroll = view.findViewById(R.id.invite_scroll); 339 340 WebSettings webSettings = mMessageContentView.getSettings(); 341 webSettings.setBlockNetworkLoads(true); 342 webSettings.setSupportZoom(true); 343 webSettings.setBuiltInZoomControls(true); 344 mMessageContentView.setWebViewClient(new CustomWebViewClient()); 345 return view; 346 } 347 348 @Override 349 public void onActivityCreated(Bundle savedInstanceState) { 350 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 351 Log.d(Email.LOG_TAG, "MessageViewFragment onActivityCreated"); 352 } 353 super.onActivityCreated(savedInstanceState); 354 mController.addResultCallback(mControllerCallback); 355 } 356 357 @Override 358 public void onStart() { 359 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 360 Log.d(Email.LOG_TAG, "MessageViewFragment onStart"); 361 } 362 super.onStart(); 363 } 364 365 @Override 366 public void onResume() { 367 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 368 Log.d(Email.LOG_TAG, "MessageViewFragment onResume"); 369 } 370 super.onResume(); 371 372 mResumed = true; 373 if (isMessageSpecified()) { 374 if (mLoadWhenResumed) { 375 loadMessageIfResumed(); 376 } else { 377 // This means, the user comes back from other (full-screen) activities. 378 // In this case we've already loaded the content, so don't load it again, 379 // which results in resetting all view state, including WebView zoom/pan 380 // and the current tab. 381 } 382 } 383 } 384 385 @Override 386 public void onPause() { 387 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 388 Log.d(Email.LOG_TAG, "MessageViewFragment onPause"); 389 } 390 mResumed = false; 391 super.onPause(); 392 } 393 394 @Override 395 public void onStop() { 396 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 397 Log.d(Email.LOG_TAG, "MessageViewFragment onStop"); 398 } 399 super.onStop(); 400 } 401 402 @Override 403 public void onDestroy() { 404 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 405 Log.d(Email.LOG_TAG, "MessageViewFragment onDestroy"); 406 } 407 mCallback.onMessageViewGone(); 408 mController.removeResultCallback(mControllerCallback); 409 clearContent(); 410 mMessageContentView.destroy(); 411 mMessageContentView = null; 412 super.onDestroy(); 413 } 414 415 @Override 416 public void onSaveInstanceState(Bundle outState) { 417 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 418 Log.d(Email.LOG_TAG, "MessageViewFragment onSaveInstanceState"); 419 } 420 super.onSaveInstanceState(outState); 421 } 422 423 public void setCallback(Callback callback) { 424 mCallback = (callback == null) ? EmptyCallback.INSTANCE : callback; 425 } 426 427 private void cancelAllTasks() { 428 mMessageObserver.unregister(); 429 Utility.cancelTaskInterrupt(mLoadMessageTask); 430 mLoadMessageTask = null; 431 Utility.cancelTaskInterrupt(mReloadMessageTask); 432 mReloadMessageTask = null; 433 Utility.cancelTaskInterrupt(mLoadBodyTask); 434 mLoadBodyTask = null; 435 Utility.cancelTaskInterrupt(mLoadAttachmentsTask); 436 mLoadAttachmentsTask = null; 437 } 438 439 /** 440 * Subclass returns true if which message to open is already specified by the activity. 441 */ 442 protected abstract boolean isMessageSpecified(); 443 444 protected final Controller getController() { 445 return mController; 446 } 447 448 protected final Callback getCallback() { 449 return mCallback; 450 } 451 452 protected final Message getMessage() { 453 return mMessage; 454 } 455 456 protected final boolean isMessageOpen() { 457 return mMessage != null; 458 } 459 460 /** 461 * Returns the account id of the current message, or -1 if unknown (message not open yet, or 462 * viewing an EML message). 463 */ 464 public long getAccountId() { 465 return mAccountId; 466 } 467 468 /** 469 * Clear all the content -- should be called when the fragment is hidden. 470 */ 471 public void clearContent() { 472 cancelAllTasks(); 473 resetView(); 474 } 475 476 protected final void loadMessageIfResumed() { 477 if (!mResumed) { 478 mLoadWhenResumed = true; 479 return; 480 } 481 mLoadWhenResumed = false; 482 cancelAllTasks(); 483 resetView(); 484 mLoadMessageTask = new LoadMessageTask(true); 485 mLoadMessageTask.execute(); 486 } 487 488 /** 489 * Show/hide the content. We hide all the content (except for the bottom buttons) when loading, 490 * to avoid flicker. 491 */ 492 private void showContent(boolean showContent, boolean showProgressWhenHidden) { 493 if (mLoadingProgress == null) { 494 // Phone UI doesn't have it yet. 495 // TODO Add loading_progress and main_panel to the phone layout too. 496 } else { 497 makeVisible(mMainView, showContent); 498 makeVisible(mLoadingProgress, !showContent && showProgressWhenHidden); 499 } 500 } 501 502 protected void resetView() { 503 showContent(false, false); 504 setCurrentTab(TAB_MESSAGE); 505 updateTabFlags(0); 506 if (mMessageContentView != null) { 507 mMessageContentView.getSettings().setBlockNetworkLoads(true); 508 mMessageContentView.scrollTo(0, 0); 509 mMessageContentView.clearView(); 510 511 // Dynamic configuration of WebView 512 final WebSettings settings = mMessageContentView.getSettings(); 513 settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL); 514 mMessageContentView.setInitialScale(getWebViewZoom()); 515 } 516 mAttachmentsScroll.scrollTo(0, 0); 517 mInviteScroll.scrollTo(0, 0); 518 mAttachments.removeAllViews(); 519 mAttachments.setVisibility(View.GONE); 520 initContactStatusViews(); 521 } 522 523 /** 524 * Returns the zoom scale (in percent) which is a combination of the user setting 525 * (tiny, small, normal, large, huge) and the device density. The intention 526 * is for the text to be physically equal in size over different density 527 * screens. 528 */ 529 private int getWebViewZoom() { 530 float density = mContext.getResources().getDisplayMetrics().density; 531 int zoom = Preferences.getPreferences(mContext).getTextZoom(); 532 return (int) (ZOOM_SCALE_ARRAY[zoom] * density * 100); 533 } 534 535 private void initContactStatusViews() { 536 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED; 537 mQuickContactLookupUri = null; 538 mSenderPresenceView.setImageResource(ContactStatusLoader.PRESENCE_UNKNOWN_RESOURCE_ID); 539 showDefaultQuickContactBadgeImage(); 540 } 541 542 private void showDefaultQuickContactBadgeImage() { 543 mFromBadge.setImageResource(R.drawable.ic_contact_picture); 544 } 545 546 protected final void addTabFlags(int tabFlags) { 547 updateTabFlags(mTabFlags | tabFlags); 548 } 549 550 private final void clearTabFlags(int tabFlags) { 551 updateTabFlags(mTabFlags & ~tabFlags); 552 } 553 554 private void setAttachmentCount(int count) { 555 mAttachmentCount = count; 556 if (mAttachmentCount > 0) { 557 addTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 558 } else { 559 clearTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 560 } 561 } 562 563 private static void makeVisible(View v, boolean visible) { 564 v.setVisibility(visible ? View.VISIBLE : View.GONE); 565 } 566 567 /** 568 * Update the visual of the tabs. (visibility, text, etc) 569 */ 570 private void updateTabFlags(int tabFlags) { 571 mTabFlags = tabFlags; 572 mTabSection.setVisibility(tabFlags == 0 ? View.GONE : View.VISIBLE); 573 if (tabFlags == 0) { 574 return; 575 } 576 boolean messageTabVisible = (tabFlags & (TAB_FLAGS_HAS_INVITE | TAB_FLAGS_HAS_ATTACHMENT)) 577 != 0; 578 makeVisible(mMessageTab, messageTabVisible); 579 makeVisible(mInviteTab, (tabFlags & TAB_FLAGS_HAS_INVITE) != 0); 580 makeVisible(mAttachmentTab, (tabFlags & TAB_FLAGS_HAS_ATTACHMENT) != 0); 581 582 final boolean hasPictures = (tabFlags & TAB_FLAGS_HAS_PICTURES) != 0; 583 final boolean pictureLoaded = (tabFlags & TAB_FLAGS_PICTURE_LOADED) != 0; 584 makeVisible(mShowPicturesTab, hasPictures && !pictureLoaded); 585 586 mAttachmentTab.setText(mContext.getResources().getQuantityString( 587 R.plurals.message_view_show_attachments_action, 588 mAttachmentCount, mAttachmentCount)); 589 } 590 591 /** 592 * Set the current tab. 593 * 594 * @param tab any of {@link #TAB_MESSAGE}, {@link #TAB_ATTACHMENT} or {@link #TAB_INVITE}. 595 */ 596 private void setCurrentTab(int tab) { 597 mCurrentTab = tab; 598 if (mMessageContentView != null) { 599 makeVisible(mMessageContentView, tab == TAB_MESSAGE); 600 } 601 mMessageTab.setSelected(tab == TAB_MESSAGE); 602 603 makeVisible(mAttachmentsScroll, tab == TAB_ATTACHMENT); 604 mAttachmentTab.setSelected(tab == TAB_ATTACHMENT); 605 606 makeVisible(mInviteScroll, tab == TAB_INVITE); 607 mInviteTab.setSelected(tab == TAB_INVITE); 608 } 609 610 /** 611 * Handle clicks on sender, which shows {@link QuickContact} or prompts to add 612 * the sender as a contact. 613 */ 614 private void onClickSender() { 615 final Address senderEmail = Address.unpackFirst(mMessage.mFrom); 616 if (senderEmail == null) return; 617 618 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED) { 619 // Status not loaded yet. 620 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED_TRIGGERED; 621 return; 622 } 623 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED) { 624 return; // Already clicked, and waiting for the data. 625 } 626 627 if (mQuickContactLookupUri != null) { 628 QuickContact.showQuickContact(mContext, mFromBadge, mQuickContactLookupUri, 629 QuickContact.MODE_LARGE, null); 630 } else { 631 // No matching contact, ask user to create one 632 final Uri mailUri = Uri.fromParts("mailto", senderEmail.getAddress(), null); 633 final Intent intent = new Intent(ContactsContract.Intents.SHOW_OR_CREATE_CONTACT, 634 mailUri); 635 636 // Pass along full E-mail string for possible create dialog 637 intent.putExtra(ContactsContract.Intents.EXTRA_CREATE_DESCRIPTION, 638 senderEmail.toString()); 639 640 // Only provide personal name hint if we have one 641 final String senderPersonal = senderEmail.getPersonal(); 642 if (!TextUtils.isEmpty(senderPersonal)) { 643 intent.putExtra(ContactsContract.Intents.Insert.NAME, senderPersonal); 644 } 645 intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 646 647 startActivity(intent); 648 } 649 } 650 651 private static class ContactStatusLoaderCallbacks 652 implements LoaderCallbacks<ContactStatusLoader.Result> { 653 private static final String BUNDLE_EMAIL_ADDRESS = "email"; 654 private final MessageViewFragmentBase mFragment; 655 656 public ContactStatusLoaderCallbacks(MessageViewFragmentBase fragment) { 657 mFragment = fragment; 658 } 659 660 public static Bundle createArguments(String emailAddress) { 661 Bundle b = new Bundle(); 662 b.putString(BUNDLE_EMAIL_ADDRESS, emailAddress); 663 return b; 664 } 665 666 @Override 667 public Loader<ContactStatusLoader.Result> onCreateLoader(int id, Bundle args) { 668 return new ContactStatusLoader(mFragment.mContext, 669 args.getString(BUNDLE_EMAIL_ADDRESS)); 670 } 671 672 @Override 673 public void onLoadFinished(Loader<ContactStatusLoader.Result> loader, 674 ContactStatusLoader.Result result) { 675 boolean triggered = 676 (mFragment.mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED); 677 mFragment.mContactStatusState = CONTACT_STATUS_STATE_LOADED; 678 mFragment.mQuickContactLookupUri = result.mLookupUri; 679 mFragment.mSenderPresenceView.setImageResource(result.mPresenceResId); 680 if (result.mPhoto != null) { // photo will be null if unknown. 681 mFragment.mFromBadge.setImageBitmap(result.mPhoto); 682 } 683 if (triggered) { 684 mFragment.onClickSender(); 685 } 686 } 687 688 @Override 689 public void onLoaderReset(Loader<ContactStatusLoader.Result> loader) { 690 } 691 } 692 693 private void onSaveAttachment(AttachmentInfo info) { 694 if (!Utility.isExternalStorageMounted()) { 695 /* 696 * Abort early if there's no place to save the attachment. We don't want to spend 697 * the time downloading it and then abort. 698 */ 699 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 700 return; 701 } 702 Attachment attachment = Attachment.restoreAttachmentWithId(mContext, info.attachmentId); 703 Uri attachmentUri = AttachmentProvider.getAttachmentUri(mAccountId, attachment.mId); 704 705 try { 706 File downloads = Environment.getExternalStoragePublicDirectory( 707 Environment.DIRECTORY_DOWNLOADS); 708 downloads.mkdirs(); 709 File file = Utility.createUniqueFile(downloads, attachment.mFileName); 710 Uri contentUri = AttachmentProvider.resolveAttachmentIdToContentUri( 711 mContext.getContentResolver(), attachmentUri); 712 InputStream in = mContext.getContentResolver().openInputStream(contentUri); 713 OutputStream out = new FileOutputStream(file); 714 IOUtils.copy(in, out); 715 out.flush(); 716 out.close(); 717 in.close(); 718 719 Utility.showToast(getActivity(), String.format( 720 mContext.getString(R.string.message_view_status_attachment_saved), 721 file.getName())); 722 MediaOpener.scanAndOpen(getActivity(), file); 723 } catch (IOException ioe) { 724 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 725 } 726 } 727 728 private void onViewAttachment(AttachmentInfo info) { 729 Intent intent = getAttachmentIntent(info); 730 try { 731 startActivity(intent); 732 } catch (ActivityNotFoundException e) { 733 Utility.showToast(getActivity(), R.string.message_view_display_attachment_toast); 734 } 735 } 736 737 /** 738 * Returns an <code>Intent</code> to load the given attachment. 739 */ 740 private Intent getAttachmentIntent(AttachmentInfo info) { 741 Uri attachmentUri = AttachmentProvider.getAttachmentUri(mAccountId, info.attachmentId); 742 Uri contentUri = AttachmentProvider.resolveAttachmentIdToContentUri( 743 mContext.getContentResolver(), attachmentUri); 744 Intent intent = new Intent(Intent.ACTION_VIEW); 745 intent.setData(contentUri); 746 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION 747 | Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 748 return intent; 749 } 750 751 private void onLoadAttachment(final AttachmentInfo attachment) { 752 attachment.loadButton.setVisibility(View.GONE); 753 // If there's nothing in the download queue, we'll probably start right away so wait a 754 // second before showing the cancel button 755 if (AttachmentDownloadService.getQueueSize() == 0) { 756 // Set to invisible; if the button is still in this state one second from now, we'll 757 // assume the download won't start right away, and we make the cancel button visible 758 attachment.cancelButton.setVisibility(View.GONE); 759 // Create the timed task that will change the button state 760 new AsyncTask<Void, Void, Void>() { 761 @Override 762 protected Void doInBackground(Void... params) { 763 try { 764 Thread.sleep(1000L); 765 } catch (InterruptedException e) { } 766 return null; 767 } 768 @Override 769 protected void onPostExecute(Void result) { 770 // If the timeout completes and the attachment has not loaded, show cancel 771 if (!attachment.isLoaded) { 772 attachment.cancelButton.setVisibility(View.VISIBLE); 773 } 774 } 775 }.execute(); 776 } else { 777 attachment.cancelButton.setVisibility(View.VISIBLE); 778 } 779 ProgressBar bar = attachment.progressView; 780 bar.setVisibility(View.VISIBLE); 781 bar.setIndeterminate(true); 782 mController.loadAttachment(attachment.attachmentId, mMessageId, mAccountId); 783 } 784 785 private void onCancelAttachment(AttachmentInfo attachment) { 786 // Don't change button states if we couldn't cancel the download 787 if (AttachmentDownloadService.cancelQueuedAttachment(attachment.attachmentId)) { 788 attachment.loadButton.setVisibility(View.VISIBLE); 789 attachment.cancelButton.setVisibility(View.GONE); 790 ProgressBar bar = attachment.progressView; 791 bar.setVisibility(View.INVISIBLE); 792 } 793 } 794 795 /** 796 * Called by ControllerResults. Show the "View" and "Save" buttons; hide "Load" and "Stop" 797 * 798 * @param attachmentId the attachment that was just downloaded 799 */ 800 private void doFinishLoadAttachment(long attachmentId) { 801 AttachmentInfo info = findAttachmentInfo(attachmentId); 802 if (info != null) { 803 info.isLoaded = true; 804 805 info.loadButton.setVisibility(View.GONE); 806 info.cancelButton.setVisibility(View.GONE); 807 808 boolean showSave = info.allowSave && !TextUtils.isEmpty(info.name); 809 boolean showView = info.allowView; 810 info.saveButton.setVisibility(showSave ? View.VISIBLE : View.GONE); 811 info.viewButton.setVisibility(showView ? View.VISIBLE : View.GONE); 812 } 813 } 814 815 private void onShowPicturesInHtml() { 816 if (mMessageContentView != null) { 817 mMessageContentView.getSettings().setBlockNetworkLoads(false); 818 if (mHtmlTextWebView != null) { 819 mMessageContentView.loadDataWithBaseURL("email://", mHtmlTextWebView, 820 "text/html", "utf-8", null); 821 } 822 addTabFlags(TAB_FLAGS_PICTURE_LOADED); 823 } 824 } 825 826 private void onShowDetails() { 827 if (mMessage == null) { 828 return; // shouldn't happen 829 } 830 String subject = mMessage.mSubject; 831 String date = formatDate(mMessage.mTimeStamp, true); 832 String from = Address.toString(Address.unpack(mMessage.mFrom)); 833 String to = Address.toString(Address.unpack(mMessage.mTo)); 834 String cc = Address.toString(Address.unpack(mMessage.mCc)); 835 String bcc = Address.toString(Address.unpack(mMessage.mBcc)); 836 MessageViewMessageDetailsDialog dialog = MessageViewMessageDetailsDialog.newInstance( 837 getActivity(), subject, date, from, to, cc, bcc); 838 dialog.show(getActivity().getFragmentManager(), null); 839 } 840 841 @Override 842 public void onClick(View view) { 843 if (!isMessageOpen()) { 844 return; // Ignore. 845 } 846 switch (view.getId()) { 847 case R.id.from_name: 848 case R.id.from_address: 849 case R.id.badge: 850 case R.id.presence: 851 onClickSender(); 852 break; 853 case R.id.load: 854 onLoadAttachment((AttachmentInfo) view.getTag()); 855 break; 856 case R.id.save: 857 onSaveAttachment((AttachmentInfo) view.getTag()); 858 break; 859 case R.id.view: 860 onViewAttachment((AttachmentInfo) view.getTag()); 861 break; 862 case R.id.cancel: 863 onCancelAttachment((AttachmentInfo) view.getTag()); 864 break; 865 case R.id.show_message: 866 setCurrentTab(TAB_MESSAGE); 867 break; 868 case R.id.show_invite: 869 setCurrentTab(TAB_INVITE); 870 break; 871 case R.id.show_attachments: 872 setCurrentTab(TAB_ATTACHMENT); 873 break; 874 case R.id.show_pictures: 875 onShowPicturesInHtml(); 876 break; 877 case R.id.show_details: 878 onShowDetails(); 879 break; 880 } 881 } 882 883 /** 884 * Start loading contact photo and presence. 885 */ 886 private void queryContactStatus() { 887 initContactStatusViews(); // Initialize the state, just in case. 888 889 // Find the sender email address, and start presence check. 890 if (mMessage != null) { 891 Address sender = Address.unpackFirst(mMessage.mFrom); 892 if (sender != null) { 893 String email = sender.getAddress(); 894 if (email != null) { 895 getLoaderManager().restartLoader(PHOTO_LOADER_ID, 896 ContactStatusLoaderCallbacks.createArguments(email), 897 new ContactStatusLoaderCallbacks(this)); 898 } 899 } 900 } 901 } 902 903 /** 904 * Called by {@link LoadMessageTask} and {@link ReloadMessageTask} to load a message in a 905 * subclass specific way. 906 * 907 * NOTE This method is called on a worker thread! Implementations must properly synchronize 908 * when accessing members. This method may be called after or even at the same time as 909 * {@link #clearContent()}. 910 * 911 * @param activity the parent activity. Subclass use it as a context, and to show a toast. 912 */ 913 protected abstract Message openMessageSync(Activity activity); 914 915 /** 916 * Async task for loading a single message outside of the UI thread 917 */ 918 private class LoadMessageTask extends AsyncTask<Void, Void, Message> { 919 920 private final boolean mOkToFetch; 921 private int mMailboxType; 922 923 /** 924 * Special constructor to cache some local info 925 */ 926 public LoadMessageTask(boolean okToFetch) { 927 mOkToFetch = okToFetch; 928 } 929 930 @Override 931 protected Message doInBackground(Void... params) { 932 Activity activity = getActivity(); 933 Message message = null; 934 if (activity != null) { 935 message = openMessageSync(activity); 936 } 937 if (message != null) { 938 mMailboxType = Mailbox.getMailboxType(mContext, message.mMailboxKey); 939 if (mMailboxType == -1) { 940 message = null; // mailbox removed?? 941 } 942 } 943 return message; 944 } 945 946 @Override 947 protected void onPostExecute(Message message) { 948 if (isCancelled()) { 949 return; 950 } 951 if (message == null) { 952 resetView(); 953 mCallback.onMessageNotExists(); 954 return; 955 } 956 mMessageId = message.mId; 957 958 reloadUiFromMessage(message, mOkToFetch); 959 queryContactStatus(); 960 onMessageShown(mMessageId, mMailboxType); 961 } 962 } 963 964 /** 965 * Kicked by {@link MessageObserver}. Reload the message and update the views. 966 */ 967 private class ReloadMessageTask extends AsyncTask<Void, Void, Message> { 968 @Override 969 protected Message doInBackground(Void... params) { 970 if (!isMessageSpecified()) { // just in case 971 return null; 972 } 973 Activity activity = getActivity(); 974 if (activity == null) { 975 return null; 976 } else { 977 return openMessageSync(activity); 978 } 979 } 980 981 @Override 982 protected void onPostExecute(Message message) { 983 if (isCancelled()) { 984 return; 985 } 986 if (message == null || message.mMailboxKey != mMessage.mMailboxKey) { 987 // Message deleted or moved. 988 mCallback.onMessageNotExists(); 989 return; 990 } 991 mMessage = message; 992 updateHeaderView(mMessage); 993 } 994 } 995 996 /** 997 * Called when a message is shown to the user. 998 */ 999 protected void onMessageShown(long messageId, int mailboxType) { 1000 mCallback.onMessageViewShown(mailboxType); 1001 } 1002 1003 /** 1004 * Called when the message body is loaded. 1005 */ 1006 protected void onPostLoadBody() { 1007 } 1008 1009 /** 1010 * Async task for loading a single message body outside of the UI thread 1011 */ 1012 private class LoadBodyTask extends AsyncTask<Void, Void, String[]> { 1013 1014 private long mId; 1015 private boolean mErrorLoadingMessageBody; 1016 1017 /** 1018 * Special constructor to cache some local info 1019 */ 1020 public LoadBodyTask(long messageId) { 1021 mId = messageId; 1022 } 1023 1024 @Override 1025 protected String[] doInBackground(Void... params) { 1026 try { 1027 String text = null; 1028 String html = Body.restoreBodyHtmlWithMessageId(mContext, mId); 1029 if (html == null) { 1030 text = Body.restoreBodyTextWithMessageId(mContext, mId); 1031 } 1032 return new String[] { text, html }; 1033 } catch (RuntimeException re) { 1034 // This catches SQLiteException as well as other RTE's we've seen from the 1035 // database calls, such as IllegalStateException 1036 Log.d(Email.LOG_TAG, "Exception while loading message body", re); 1037 mErrorLoadingMessageBody = true; 1038 return null; 1039 } 1040 } 1041 1042 @Override 1043 protected void onPostExecute(String[] results) { 1044 if (results == null || isCancelled()) { 1045 if (mErrorLoadingMessageBody) { 1046 Utility.showToast(getActivity(), R.string.error_loading_message_body); 1047 } 1048 resetView(); 1049 return; 1050 } 1051 reloadUiFromBody(results[0], results[1]); // text, html 1052 onPostLoadBody(); 1053 } 1054 } 1055 1056 /** 1057 * Async task for loading attachments 1058 * 1059 * Note: This really should only be called when the message load is complete - or, we should 1060 * leave open a listener so the attachments can fill in as they are discovered. In either case, 1061 * this implementation is incomplete, as it will fail to refresh properly if the message is 1062 * partially loaded at this time. 1063 */ 1064 private class LoadAttachmentsTask extends AsyncTask<Long, Void, Attachment[]> { 1065 @Override 1066 protected Attachment[] doInBackground(Long... messageIds) { 1067 return Attachment.restoreAttachmentsWithMessageId(mContext, messageIds[0]); 1068 } 1069 1070 @Override 1071 protected void onPostExecute(Attachment[] attachments) { 1072 try { 1073 if (isCancelled() || attachments == null) { 1074 return; 1075 } 1076 boolean htmlChanged = false; 1077 int numDisplayedAttachments = 0; 1078 for (Attachment attachment : attachments) { 1079 if (mHtmlTextRaw != null && attachment.mContentId != null 1080 && attachment.mContentUri != null) { 1081 // for html body, replace CID for inline images 1082 // Regexp which matches ' src="cid:contentId"'. 1083 String contentIdRe = 1084 "\\s+(?i)src=\"cid(?-i):\\Q" + attachment.mContentId + "\\E\""; 1085 String srcContentUri = " src=\"" + attachment.mContentUri + "\""; 1086 mHtmlTextRaw = mHtmlTextRaw.replaceAll(contentIdRe, srcContentUri); 1087 htmlChanged = true; 1088 } else { 1089 addAttachment(attachment); 1090 numDisplayedAttachments++; 1091 } 1092 } 1093 setAttachmentCount(numDisplayedAttachments); 1094 mHtmlTextWebView = mHtmlTextRaw; 1095 mHtmlTextRaw = null; 1096 if (htmlChanged && mMessageContentView != null) { 1097 mMessageContentView.loadDataWithBaseURL("email://", mHtmlTextWebView, 1098 "text/html", "utf-8", null); 1099 } 1100 } finally { 1101 showContent(true, false); 1102 } 1103 } 1104 } 1105 1106 private Bitmap getPreviewIcon(AttachmentInfo attachment) { 1107 try { 1108 return BitmapFactory.decodeStream( 1109 mContext.getContentResolver().openInputStream( 1110 AttachmentProvider.getAttachmentThumbnailUri( 1111 mAccountId, attachment.attachmentId, 1112 PREVIEW_ICON_WIDTH, 1113 PREVIEW_ICON_HEIGHT))); 1114 } catch (Exception e) { 1115 Log.d(Email.LOG_TAG, "Attachment preview failed with exception " + e.getMessage()); 1116 return null; 1117 } 1118 } 1119 1120 private void updateAttachmentThumbnail(long attachmentId) { 1121 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1122 AttachmentInfo attachment = (AttachmentInfo) mAttachments.getChildAt(i).getTag(); 1123 if (attachment.attachmentId == attachmentId) { 1124 Bitmap previewIcon = getPreviewIcon(attachment); 1125 if (previewIcon != null) { 1126 attachment.iconView.setImageBitmap(previewIcon); 1127 } 1128 return; 1129 } 1130 } 1131 } 1132 1133 /** 1134 * Copy data from a cursor-refreshed attachment into the UI. Called from UI thread. 1135 * 1136 * @param attachment A single attachment loaded from the provider 1137 */ 1138 private void addAttachment(Attachment attachment) { 1139 AttachmentInfo attachmentInfo = new AttachmentInfo(); 1140 attachmentInfo.size = attachment.mSize; 1141 attachmentInfo.contentType = 1142 AttachmentProvider.inferMimeType(attachment.mFileName, attachment.mMimeType); 1143 attachmentInfo.name = attachment.mFileName; 1144 attachmentInfo.attachmentId = attachment.mId; 1145 attachmentInfo.allowView = true; 1146 attachmentInfo.allowSave = true; 1147 attachmentInfo.isLoaded = false; 1148 1149 LayoutInflater inflater = getActivity().getLayoutInflater(); 1150 View view = inflater.inflate(R.layout.message_view_attachment, null); 1151 1152 TextView attachmentName = (TextView)view.findViewById(R.id.attachment_name); 1153 TextView attachmentInfoView = (TextView)view.findViewById(R.id.attachment_info); 1154 ImageView attachmentIcon = (ImageView)view.findViewById(R.id.attachment_icon); 1155 Button attachmentView = (Button)view.findViewById(R.id.view); 1156 Button attachmentSave = (Button)view.findViewById(R.id.save); 1157 Button attachmentLoad = (Button)view.findViewById(R.id.load); 1158 Button attachmentCancel = (Button)view.findViewById(R.id.cancel); 1159 ProgressBar attachmentProgress = (ProgressBar)view.findViewById(R.id.progress); 1160 1161 // Check for acceptable / unacceptable attachments by MIME-type 1162 String contentType = attachmentInfo.contentType; 1163 if ((!MimeUtility.mimeTypeMatches(contentType, Email.ACCEPTABLE_ATTACHMENT_VIEW_TYPES)) || 1164 (MimeUtility.mimeTypeMatches(contentType, Email.UNACCEPTABLE_ATTACHMENT_VIEW_TYPES))) { 1165 attachmentInfo.allowView = false; 1166 } 1167 1168 // Check for unacceptable attachments by filename extension; hide both buttons 1169 String extension = AttachmentProvider.getFilenameExtension(attachmentInfo.name); 1170 if (!TextUtils.isEmpty(extension) && 1171 Utility.arrayContains(Email.UNACCEPTABLE_ATTACHMENT_EXTENSIONS, extension)) { 1172 attachmentInfo.allowView = false; 1173 attachmentInfo.allowSave = false; 1174 } 1175 1176 // Check for installable attachments by filename extension; hide both buttons 1177 extension = AttachmentProvider.getFilenameExtension(attachmentInfo.name); 1178 if (!TextUtils.isEmpty(extension) && 1179 Utility.arrayContains(Email.INSTALLABLE_ATTACHMENT_EXTENSIONS, extension)) { 1180 int sideloadEnabled; 1181 sideloadEnabled = Settings.Secure.getInt(mContext.getContentResolver(), 1182 Settings.Secure.INSTALL_NON_MARKET_APPS, 0 /* sideload disabled */); 1183 // TODO Allow showing an "install" button 1184 attachmentInfo.allowView = false; 1185 attachmentInfo.allowSave = (sideloadEnabled == 1); 1186 } 1187 1188 // File size exceeded; Hide both buttons 1189 // The size limit is overridden when on a wifi connection - any size is OK 1190 if (attachmentInfo.size > Email.MAX_ATTACHMENT_DOWNLOAD_SIZE) { 1191 ConnectivityManager cm = (ConnectivityManager) 1192 mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 1193 NetworkInfo network = cm.getActiveNetworkInfo(); 1194 if (network == null || network.getType() != ConnectivityManager.TYPE_WIFI) { 1195 attachmentInfo.allowView = false; 1196 attachmentInfo.allowSave = false; 1197 } 1198 } 1199 1200 // No activity to view the attachment; Hide both buttons 1201 if (!isAttachmentViewerInstalled(attachmentInfo)) { 1202 attachmentInfo.allowView = false; 1203 attachmentInfo.allowSave = false; 1204 } 1205 1206 // Don't enable the "save" button if we've got no place to save the file 1207 if (!Utility.isExternalStorageMounted()) { 1208 attachmentInfo.allowSave = false; 1209 } 1210 1211 if (!attachmentInfo.allowView) { 1212 attachmentView.setVisibility(View.GONE); 1213 } 1214 if (!attachmentInfo.allowSave) { 1215 attachmentSave.setVisibility(View.GONE); 1216 } 1217 1218 attachmentInfo.viewButton = attachmentView; 1219 attachmentInfo.saveButton = attachmentSave; 1220 attachmentInfo.loadButton = attachmentLoad; 1221 attachmentInfo.cancelButton = attachmentCancel; 1222 attachmentInfo.iconView = attachmentIcon; 1223 attachmentInfo.progressView = attachmentProgress; 1224 1225 if (!attachmentInfo.allowView && !attachmentInfo.allowSave) { 1226 // This attachment may never be viewed or saved, so block everything 1227 attachmentProgress.setVisibility(View.GONE); 1228 attachmentView.setVisibility(View.GONE); 1229 attachmentSave.setVisibility(View.GONE); 1230 attachmentLoad.setVisibility(View.GONE); 1231 attachmentCancel.setVisibility(View.GONE); 1232 // TODO: Maybe show a little icon to denote blocked download 1233 } else if (Utility.attachmentExists(mContext, attachment)) { 1234 // If the attachment is loaded, show 100% progress 1235 // Note that for POP3 messages, the user will only see "Open" and "Save", 1236 // because the entire message is loaded before being shown. 1237 attachmentInfo.isLoaded = true; 1238 1239 // Hide "Load", show "View" and "Save" 1240 attachmentProgress.setVisibility(View.VISIBLE); 1241 attachmentProgress.setProgress(100); 1242 if (attachmentInfo.allowSave) { 1243 attachmentSave.setVisibility(View.VISIBLE); 1244 } 1245 if (attachmentInfo.allowView) { 1246 attachmentView.setVisibility(View.VISIBLE); 1247 } 1248 attachmentLoad.setVisibility(View.GONE); 1249 attachmentCancel.setVisibility(View.GONE); 1250 1251 Bitmap previewIcon = getPreviewIcon(attachmentInfo); 1252 if (previewIcon != null) { 1253 attachmentIcon.setImageBitmap(previewIcon); 1254 } 1255 } else { 1256 // The attachment is not loaded, so present UI to start downloading it 1257 1258 // Show "Load"; hide "View" and "Save" 1259 attachmentSave.setVisibility(View.GONE); 1260 attachmentView.setVisibility(View.GONE); 1261 1262 // If the attachment is queued, show the indeterminate progress bar. From this point,. 1263 // any progress changes will cause this to be replaced by the normal progress bar 1264 if (AttachmentDownloadService.isAttachmentQueued(attachment.mId)){ 1265 attachmentProgress.setVisibility(View.VISIBLE); 1266 attachmentProgress.setIndeterminate(true); 1267 attachmentLoad.setVisibility(View.GONE); 1268 attachmentCancel.setVisibility(View.VISIBLE); 1269 } else { 1270 attachmentLoad.setVisibility(View.VISIBLE); 1271 attachmentCancel.setVisibility(View.GONE); 1272 } 1273 } 1274 1275 view.setTag(attachmentInfo); 1276 attachmentView.setOnClickListener(this); 1277 attachmentView.setTag(attachmentInfo); 1278 attachmentSave.setOnClickListener(this); 1279 attachmentSave.setTag(attachmentInfo); 1280 attachmentLoad.setOnClickListener(this); 1281 attachmentLoad.setTag(attachmentInfo); 1282 attachmentCancel.setOnClickListener(this); 1283 attachmentCancel.setTag(attachmentInfo); 1284 1285 attachmentName.setText(attachmentInfo.name); 1286 attachmentInfoView.setText(Utility.formatSize(mContext, attachmentInfo.size)); 1287 1288 mAttachments.addView(view); 1289 mAttachments.setVisibility(View.VISIBLE); 1290 } 1291 1292 /** 1293 * Returns whether or not there is an Activity installed that can handle the given attachment. 1294 */ 1295 private boolean isAttachmentViewerInstalled(AttachmentInfo info) { 1296 Intent intent = getAttachmentIntent(info); 1297 PackageManager pm = mContext.getPackageManager(); 1298 List<ResolveInfo> activityList = pm.queryIntentActivities(intent, 0); 1299 return (activityList.size() > 0); 1300 } 1301 1302 /** 1303 * Reload the UI from a provider cursor. {@link LoadMessageTask#onPostExecute} calls it. 1304 * 1305 * Update the header views, and start loading the body. 1306 * 1307 * @param message A copy of the message loaded from the database 1308 * @param okToFetch If true, and message is not fully loaded, it's OK to fetch from 1309 * the network. Use false to prevent looping here. 1310 */ 1311 protected void reloadUiFromMessage(Message message, boolean okToFetch) { 1312 mMessage = message; 1313 mAccountId = message.mAccountKey; 1314 1315 mMessageObserver.register(ContentUris.withAppendedId(Message.CONTENT_URI, mMessage.mId)); 1316 1317 updateHeaderView(mMessage); 1318 1319 // Handle partially-loaded email, as follows: 1320 // 1. Check value of message.mFlagLoaded 1321 // 2. If != LOADED, ask controller to load it 1322 // 3. Controller callback (after loaded) should trigger LoadBodyTask & LoadAttachmentsTask 1323 // 4. Else start the loader tasks right away (message already loaded) 1324 if (okToFetch && message.mFlagLoaded != Message.FLAG_LOADED_COMPLETE) { 1325 mControllerCallback.getWrappee().setWaitForLoadMessageId(message.mId); 1326 mController.loadMessageForView(message.mId); 1327 } else { 1328 mControllerCallback.getWrappee().setWaitForLoadMessageId(-1); 1329 // Ask for body 1330 mLoadBodyTask = new LoadBodyTask(message.mId); 1331 mLoadBodyTask.execute(); 1332 } 1333 } 1334 1335 protected void updateHeaderView(Message message) { 1336 mSubjectView.setText(message.mSubject); 1337 final Address from = Address.unpackFirst(message.mFrom); 1338 1339 // Set sender address/display name 1340 // Note we set " " for empty field, so TextView's won't get squashed. 1341 // Otherwise their height will be 0, which breaks the layout. 1342 if (from != null) { 1343 final String fromFriendly = from.toFriendly(); 1344 final String fromAddress = from.getAddress(); 1345 mFromNameView.setText(fromFriendly); 1346 mFromAddressView.setText(fromFriendly.equals(fromAddress) ? " " : fromAddress); 1347 } else { 1348 mFromNameView.setText(" "); 1349 mFromAddressView.setText(" "); 1350 } 1351 mDateTimeView.setText(formatDate(message.mTimeStamp, false)); 1352 1353 // To/Cc/Bcc 1354 final Resources res = mContext.getResources(); 1355 final SpannableStringBuilder ssb = new SpannableStringBuilder(); 1356 final String friendlyTo = Address.toFriendly(Address.unpack(message.mTo)); 1357 final String friendlyCc = Address.toFriendly(Address.unpack(message.mCc)); 1358 final String friendlyBcc = Address.toFriendly(Address.unpack(message.mBcc)); 1359 1360 if (!TextUtils.isEmpty(friendlyTo)) { 1361 Utility.appendBold(ssb, res.getString(R.string.message_view_to_label)); 1362 ssb.append(" "); 1363 ssb.append(friendlyTo); 1364 } 1365 if (!TextUtils.isEmpty(friendlyCc)) { 1366 ssb.append(" "); 1367 Utility.appendBold(ssb, res.getString(R.string.message_view_cc_label)); 1368 ssb.append(" "); 1369 ssb.append(friendlyCc); 1370 } 1371 if (!TextUtils.isEmpty(friendlyBcc)) { 1372 ssb.append(" "); 1373 Utility.appendBold(ssb, res.getString(R.string.message_view_bcc_label)); 1374 ssb.append(" "); 1375 ssb.append(friendlyBcc); 1376 } 1377 mAddressesView.setText(ssb); 1378 } 1379 1380 private String formatDate(long millis, boolean withYear) { 1381 StringBuilder sb = new StringBuilder(); 1382 Formatter formatter = new Formatter(sb); 1383 DateUtils.formatDateRange(mContext, formatter, millis, millis, 1384 DateUtils.FORMAT_SHOW_DATE 1385 | DateUtils.FORMAT_ABBREV_ALL 1386 | DateUtils.FORMAT_SHOW_TIME 1387 | (withYear ? DateUtils.FORMAT_SHOW_YEAR : DateUtils.FORMAT_NO_YEAR)); 1388 return sb.toString(); 1389 } 1390 1391 /** 1392 * Reload the body from the provider cursor. This must only be called from the UI thread. 1393 * 1394 * @param bodyText text part 1395 * @param bodyHtml html part 1396 * 1397 * TODO deal with html vs text and many other issues <- WHAT DOES IT MEAN?? 1398 */ 1399 private void reloadUiFromBody(String bodyText, String bodyHtml) { 1400 String text = null; 1401 mHtmlTextRaw = null; 1402 boolean hasImages = false; 1403 1404 if (bodyHtml == null) { 1405 text = bodyText; 1406 /* 1407 * Convert the plain text to HTML 1408 */ 1409 StringBuffer sb = new StringBuffer("<html><body>"); 1410 if (text != null) { 1411 // Escape any inadvertent HTML in the text message 1412 text = EmailHtmlUtil.escapeCharacterToDisplay(text); 1413 // Find any embedded URL's and linkify 1414 Matcher m = Patterns.WEB_URL.matcher(text); 1415 while (m.find()) { 1416 int start = m.start(); 1417 /* 1418 * WEB_URL_PATTERN may match domain part of email address. To detect 1419 * this false match, the character just before the matched string 1420 * should not be '@'. 1421 */ 1422 if (start == 0 || text.charAt(start - 1) != '@') { 1423 String url = m.group(); 1424 Matcher proto = WEB_URL_PROTOCOL.matcher(url); 1425 String link; 1426 if (proto.find()) { 1427 // This is work around to force URL protocol part be lower case, 1428 // because WebView could follow only lower case protocol link. 1429 link = proto.group().toLowerCase() + url.substring(proto.end()); 1430 } else { 1431 // Patterns.WEB_URL matches URL without protocol part, 1432 // so added default protocol to link. 1433 link = "http://" + url; 1434 } 1435 String href = String.format("<a href=\"%s\">%s</a>", link, url); 1436 m.appendReplacement(sb, href); 1437 } 1438 else { 1439 m.appendReplacement(sb, "$0"); 1440 } 1441 } 1442 m.appendTail(sb); 1443 } 1444 sb.append("</body></html>"); 1445 text = sb.toString(); 1446 } else { 1447 text = bodyHtml; 1448 mHtmlTextRaw = bodyHtml; 1449 hasImages = IMG_TAG_START_REGEX.matcher(text).find(); 1450 } 1451 1452 // TODO this is not really accurate. 1453 // - Images aren't the only network resources. (e.g. CSS) 1454 // - If images are attached to the email and small enough, we download them at once, 1455 // and won't need network access when they're shown. 1456 if (hasImages) { 1457 addTabFlags(TAB_FLAGS_HAS_PICTURES); 1458 } 1459 if (mMessageContentView != null) { 1460 mMessageContentView.loadDataWithBaseURL("email://", text, "text/html", "utf-8", null); 1461 } 1462 1463 // Ask for attachments after body 1464 mLoadAttachmentsTask = new LoadAttachmentsTask(); 1465 mLoadAttachmentsTask.execute(mMessage.mId); 1466 1467 mIsMessageLoadedForTest = true; 1468 } 1469 1470 /** 1471 * Overrides for WebView behaviors. 1472 */ 1473 private class CustomWebViewClient extends WebViewClient { 1474 @Override 1475 public boolean shouldOverrideUrlLoading(WebView view, String url) { 1476 return mCallback.onUrlInMessageClicked(url); 1477 } 1478 } 1479 1480 private View findAttachmentView(long attachmentId) { 1481 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1482 View view = mAttachments.getChildAt(i); 1483 AttachmentInfo attachment = (AttachmentInfo) view.getTag(); 1484 if (attachment.attachmentId == attachmentId) { 1485 return view; 1486 } 1487 } 1488 return null; 1489 } 1490 1491 private AttachmentInfo findAttachmentInfo(long attachmentId) { 1492 View view = findAttachmentView(attachmentId); 1493 if (view != null) { 1494 return (AttachmentInfo)view.getTag(); 1495 } 1496 return null; 1497 } 1498 1499 /** 1500 * Controller results listener. We wrap it with {@link ControllerResultUiThreadWrapper}, 1501 * so all methods are called on the UI thread. 1502 */ 1503 private class ControllerResults extends Controller.Result { 1504 private long mWaitForLoadMessageId; 1505 1506 public void setWaitForLoadMessageId(long messageId) { 1507 mWaitForLoadMessageId = messageId; 1508 } 1509 1510 @Override 1511 public void loadMessageForViewCallback(MessagingException result, long accountId, 1512 long messageId, int progress) { 1513 if (messageId != mWaitForLoadMessageId) { 1514 // We are not waiting for this message to load, so exit quickly 1515 return; 1516 } 1517 if (result == null) { 1518 switch (progress) { 1519 case 0: 1520 mCallback.onLoadMessageStarted(); 1521 // Loading from network -- show the progress icon. 1522 showContent(false, true); 1523 break; 1524 case 100: 1525 mWaitForLoadMessageId = -1; 1526 mCallback.onLoadMessageFinished(); 1527 // reload UI and reload everything else too 1528 // pass false to LoadMessageTask to prevent looping here 1529 cancelAllTasks(); 1530 mLoadMessageTask = new LoadMessageTask(false); 1531 mLoadMessageTask.execute(); 1532 break; 1533 default: 1534 // do nothing - we don't have a progress bar at this time 1535 break; 1536 } 1537 } else { 1538 mWaitForLoadMessageId = -1; 1539 String error = mContext.getString(R.string.status_network_error); 1540 mCallback.onLoadMessageError(error); 1541 resetView(); 1542 } 1543 } 1544 1545 @Override 1546 public void loadAttachmentCallback(MessagingException result, long accountId, 1547 long messageId, long attachmentId, int progress) { 1548 if (messageId == mMessageId) { 1549 if (result == null) { 1550 showAttachmentProgress(attachmentId, progress); 1551 switch (progress) { 1552 case 100: 1553 updateAttachmentThumbnail(attachmentId); 1554 doFinishLoadAttachment(attachmentId); 1555 break; 1556 default: 1557 // do nothing - we don't have a progress bar at this time 1558 break; 1559 } 1560 } else { 1561 AttachmentInfo attachment = findAttachmentInfo(attachmentId); 1562 if (attachment == null) { 1563 // Called before LoadAttachmentsTask finishes. 1564 // (Possible if you quickly close & re-open a message) 1565 return; 1566 } 1567 attachment.cancelButton.setVisibility(View.GONE); 1568 attachment.loadButton.setVisibility(View.VISIBLE); 1569 attachment.progressView.setVisibility(View.INVISIBLE); 1570 1571 final String error; 1572 if (result.getCause() instanceof IOException) { 1573 error = mContext.getString(R.string.status_network_error); 1574 } else { 1575 error = mContext.getString( 1576 R.string.message_view_load_attachment_failed_toast, 1577 attachment.name); 1578 } 1579 mCallback.onLoadMessageError(error); 1580 } 1581 } 1582 } 1583 1584 private void showAttachmentProgress(long attachmentId, int progress) { 1585 AttachmentInfo attachment = findAttachmentInfo(attachmentId); 1586 if (attachment != null) { 1587 ProgressBar bar = attachment.progressView; 1588 if (progress == 0) { 1589 // When the download starts, we can get rid of the indeterminate bar 1590 bar.setVisibility(View.VISIBLE); 1591 bar.setIndeterminate(false); 1592 // And we're not implementing stop of in-progress downloads 1593 attachment.cancelButton.setVisibility(View.GONE); 1594 } 1595 bar.setProgress(progress); 1596 } 1597 } 1598 } 1599 1600 /** 1601 * Class to detect update on the current message (e.g. toggle star). When it gets content 1602 * change notifications, it kicks {@link ReloadMessageTask}. 1603 * 1604 * TODO Use the new Throttle class. 1605 */ 1606 private class MessageObserver extends ContentObserver implements Runnable { 1607 private final Throttle mThrottle; 1608 private final ContentResolver mContentResolver; 1609 1610 private boolean mRegistered; 1611 1612 public MessageObserver(Handler handler, Context context) { 1613 super(handler); 1614 mContentResolver = context.getContentResolver(); 1615 mThrottle = new Throttle("MessageObserver", this, handler); 1616 } 1617 1618 public void unregister() { 1619 if (!mRegistered) { 1620 return; 1621 } 1622 mThrottle.cancelScheduledCallback(); 1623 mContentResolver.unregisterContentObserver(this); 1624 mRegistered = false; 1625 } 1626 1627 public void register(Uri notifyUri) { 1628 unregister(); 1629 mContentResolver.registerContentObserver(notifyUri, true, this); 1630 mRegistered = true; 1631 } 1632 1633 @Override 1634 public boolean deliverSelfNotifications() { 1635 return true; 1636 } 1637 1638 @Override 1639 public void onChange(boolean selfChange) { 1640 mThrottle.onEvent(); 1641 } 1642 1643 /** 1644 * This method is delay-called by {@link Throttle} on the UI thread. Need to make 1645 * sure if the fragment is still valid. (i.e. don't reload if clearContent() has been 1646 * called.) 1647 */ 1648 @Override 1649 public void run() { 1650 if (!isMessageSpecified()) { 1651 return; 1652 } 1653 Utility.cancelTaskInterrupt(mReloadMessageTask); 1654 mReloadMessageTask = new ReloadMessageTask(); 1655 mReloadMessageTask.execute(); 1656 } 1657 } 1658 1659 public boolean isMessageLoadedForTest() { 1660 return mIsMessageLoadedForTest; 1661 } 1662 1663 public void clearIsMessageLoadedForTest() { 1664 mIsMessageLoadedForTest = true; 1665 } 1666} 1667