MessageViewFragmentBase.java revision 09eb977c062787a18a0c1ec96d929bb2279d14ad
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.R; 23import com.android.email.Throttle; 24import com.android.email.Utility; 25import com.android.email.mail.Address; 26import com.android.email.mail.MessagingException; 27import com.android.email.mail.internet.EmailHtmlUtil; 28import com.android.email.mail.internet.MimeUtility; 29import com.android.email.provider.AttachmentProvider; 30import com.android.email.provider.EmailContent.Attachment; 31import com.android.email.provider.EmailContent.Body; 32import com.android.email.provider.EmailContent.Mailbox; 33import com.android.email.provider.EmailContent.Message; 34import com.android.email.service.AttachmentDownloadService; 35 36import org.apache.commons.io.IOUtils; 37 38import android.app.Fragment; 39import android.app.LoaderManager.LoaderCallbacks; 40import android.content.ActivityNotFoundException; 41import android.content.ContentResolver; 42import android.content.ContentUris; 43import android.content.Context; 44import android.content.Intent; 45import android.content.Loader; 46import android.database.ContentObserver; 47import android.graphics.Bitmap; 48import android.graphics.BitmapFactory; 49import android.net.Uri; 50import android.os.AsyncTask; 51import android.os.Bundle; 52import android.os.Environment; 53import android.os.Handler; 54import android.provider.ContactsContract; 55import android.provider.ContactsContract.QuickContact; 56import android.text.TextUtils; 57import android.util.Log; 58import android.util.Patterns; 59import android.view.LayoutInflater; 60import android.view.View; 61import android.view.ViewGroup; 62import android.webkit.WebView; 63import android.webkit.WebViewClient; 64import android.widget.Button; 65import android.widget.ImageView; 66import android.widget.LinearLayout; 67import android.widget.ProgressBar; 68import android.widget.QuickContactBadge; 69import android.widget.TextView; 70 71import java.io.File; 72import java.io.FileOutputStream; 73import java.io.IOException; 74import java.io.InputStream; 75import java.io.OutputStream; 76import java.util.Date; 77import java.util.regex.Matcher; 78import java.util.regex.Pattern; 79 80// TODO Better handling of config changes. 81// - Restore "Show pictures" state, scroll position and current tab 82// - Retain the content; don't kick 3 async tasks every time 83 84/** 85 * Base class for {@link MessageViewFragment} and {@link MessageFileViewFragment}. 86 * 87 * See {@link MessageViewBase} for the class relation diagram. 88 */ 89public abstract class MessageViewFragmentBase extends Fragment implements View.OnClickListener { 90 private static final int PHOTO_LOADER_ID = 1; 91 private Context mContext; 92 93 // Regex that matches start of img tag. '<(?i)img\s+'. 94 private static final Pattern IMG_TAG_START_REGEX = Pattern.compile("<(?i)img\\s+"); 95 // Regex that matches Web URL protocol part as case insensitive. 96 private static final Pattern WEB_URL_PROTOCOL = Pattern.compile("(?i)http|https://"); 97 98 private static int PREVIEW_ICON_WIDTH = 62; 99 private static int PREVIEW_ICON_HEIGHT = 62; 100 101 private TextView mSubjectView; 102 private TextView mFromView; 103 private TextView mDateView; 104 private TextView mTimeView; 105 private TextView mToView; 106 private TextView mCcView; 107 private View mCcContainerView; 108 private WebView mMessageContentView; 109 private LinearLayout mAttachments; 110 private ImageView mAttachmentIcon; 111 private View mTabSection; 112 private QuickContactBadge mFromBadge; 113 private ImageView mSenderPresenceView; 114 115 private TextView mMessageTab; 116 private TextView mAttachmentTab; 117 private TextView mInviteTab; 118 // It is not really a tab, but looks like one of them. 119 private TextView mShowPicturesTab; 120 121 private View mAttachmentsScroll; 122 private View mInviteScroll; 123 124 private long mAccountId = -1; 125 private long mMessageId = -1; 126 private Message mMessage; 127 128 private LoadMessageTask mLoadMessageTask; 129 private ReloadMessageTask mReloadMessageTask; 130 private LoadBodyTask mLoadBodyTask; 131 private LoadAttachmentsTask mLoadAttachmentsTask; 132 133 private java.text.DateFormat mDateFormat; 134 private java.text.DateFormat mTimeFormat; 135 136 private Controller mController; 137 private ControllerResultUiThreadWrapper<ControllerResults> mControllerCallback; 138 139 // contains the HTML body. Is used by LoadAttachmentTask to display inline images. 140 // is null most of the time, is used transiently to pass info to LoadAttachementTask 141 private String mHtmlTextRaw; 142 143 // contains the HTML content as set in WebView. 144 private String mHtmlTextWebView; 145 146 private boolean mStarted; 147 148 private boolean mIsMessageLoadedForTest; 149 150 private MessageObserver mMessageObserver; 151 152 private static final int CONTACT_STATUS_STATE_UNLOADED = 0; 153 private static final int CONTACT_STATUS_STATE_UNLOADED_TRIGGERED = 1; 154 private static final int CONTACT_STATUS_STATE_LOADED = 2; 155 156 private int mContactStatusState; 157 private Uri mQuickContactLookupUri; 158 159 /** Flag for {@link #mTabFlags}: Message has attachment(s) */ 160 protected static final int TAB_FLAGS_HAS_ATTACHMENT = 1; 161 162 /** 163 * Flag for {@link #mTabFlags}: Message contains invite. This flag is only set by 164 * {@link MessageViewFragment}. 165 */ 166 protected static final int TAB_FLAGS_HAS_INVITE = 2; 167 168 /** Flag for {@link #mTabFlags}: Message contains pictures */ 169 protected static final int TAB_FLAGS_HAS_PICTURES = 4; 170 171 /** Flag for {@link #mTabFlags}: "Show pictures" has already been pressed */ 172 protected static final int TAB_FLAGS_PICTURE_LOADED = 8; 173 174 /** 175 * Flags to control the tabs. 176 * @see #updateTabFlags(int) 177 */ 178 private int mTabFlags; 179 180 /** # of attachments in the current message */ 181 private int mAttachmentCount; 182 183 // Use (random) large values, to avoid confusion with TAB_FLAGS_* 184 protected static final int TAB_MESSAGE = 101; 185 protected static final int TAB_INVITE = 102; 186 protected static final int TAB_ATTACHMENT = 103; 187 188 /** 189 * Currently visible tab. Any of {@link #TAB_MESSAGE}, {@link #TAB_INVITE} or 190 * {@link #TAB_ATTACHMENT}. 191 * 192 * Note we don't retain this value through configuration changes, as restoring the current tab 193 * would be clumsy with the current implementation where we load Message/Body/Attachments 194 * separately. (e.g. # of attachments can't be obtained quickly enough to update the UI 195 * after screen rotation.) 196 */ 197 private int mCurrentTab; 198 199 /** 200 * Encapsulates known information about a single attachment. 201 */ 202 private static class AttachmentInfo { 203 public String name; 204 public String contentType; 205 public long size; 206 public long attachmentId; 207 public Button viewButton; 208 public Button saveButton; 209 public Button loadButton; 210 public Button cancelButton; 211 public ImageView iconView; 212 public ProgressBar progressView; 213 } 214 215 public interface Callback { 216 /** Called when the fragment is about to show up, or show a different message. */ 217 public void onMessageViewShown(int mailboxType); 218 219 /** Called when the fragment is about to be destroyed. */ 220 public void onMessageViewGone(); 221 222 /** 223 * Called when a link in a message is clicked. 224 * 225 * @param url link url that's clicked. 226 * @return true if handled, false otherwise. 227 */ 228 public boolean onUrlInMessageClicked(String url); 229 230 /** 231 * Called when the message specified doesn't exist, or is deleted/moved. 232 */ 233 public void onMessageNotExists(); 234 235 /** Called when it starts loading a message. */ 236 public void onLoadMessageStarted(); 237 238 /** Called when it successfully finishes loading a message. */ 239 public void onLoadMessageFinished(); 240 241 /** Called when an error occurred during loading a message. */ 242 public void onLoadMessageError(); 243 } 244 245 public static class EmptyCallback implements Callback { 246 public static final Callback INSTANCE = new EmptyCallback(); 247 @Override public void onMessageViewShown(int mailboxType) {} 248 @Override public void onMessageViewGone() {} 249 @Override public void onLoadMessageError() {} 250 @Override public void onLoadMessageFinished() {} 251 @Override public void onLoadMessageStarted() {} 252 @Override public void onMessageNotExists() {} 253 @Override 254 public boolean onUrlInMessageClicked(String url) { 255 return false; 256 } 257 } 258 259 private Callback mCallback = EmptyCallback.INSTANCE; 260 261 @Override 262 public void onCreate(Bundle savedInstanceState) { 263 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 264 Log.d(Email.LOG_TAG, "MessageViewFragment onCreate"); 265 } 266 super.onCreate(savedInstanceState); 267 268 mContext = getActivity().getApplicationContext(); 269 270 mControllerCallback = new ControllerResultUiThreadWrapper<ControllerResults>( 271 new Handler(), new ControllerResults()); 272 273 mDateFormat = android.text.format.DateFormat.getDateFormat(mContext); // short format 274 mTimeFormat = android.text.format.DateFormat.getTimeFormat(mContext); // 12/24 date format 275 276 mController = Controller.getInstance(mContext); 277 mMessageObserver = new MessageObserver(new Handler(), mContext); 278 } 279 280 @Override 281 public View onCreateView( 282 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 283 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 284 Log.d(Email.LOG_TAG, "MessageViewFragment onCreateView"); 285 } 286 final View view = inflater.inflate(R.layout.message_view_fragment, container, false); 287 288 mSubjectView = (TextView) view.findViewById(R.id.subject); 289 mFromView = (TextView) view.findViewById(R.id.from); 290 mToView = (TextView) view.findViewById(R.id.to); 291 mCcView = (TextView) view.findViewById(R.id.cc); 292 mCcContainerView = view.findViewById(R.id.cc_container); 293 mDateView = (TextView) view.findViewById(R.id.date); 294 mTimeView = (TextView) view.findViewById(R.id.time); 295 mMessageContentView = (WebView) view.findViewById(R.id.message_content); 296 mAttachments = (LinearLayout) view.findViewById(R.id.attachments); 297 mAttachmentIcon = (ImageView) view.findViewById(R.id.attachment); 298 mTabSection = view.findViewById(R.id.message_tabs_section); 299 mFromBadge = (QuickContactBadge) view.findViewById(R.id.badge); 300 mSenderPresenceView = (ImageView) view.findViewById(R.id.presence); 301 302 mFromView.setOnClickListener(this); 303 mFromBadge.setOnClickListener(this); 304 mSenderPresenceView.setOnClickListener(this); 305 306 mMessageTab = (TextView) view.findViewById(R.id.show_message); 307 mAttachmentTab = (TextView) view.findViewById(R.id.show_attachments); 308 mShowPicturesTab = (TextView) view.findViewById(R.id.show_pictures); 309 // Invite is only used in MessageViewFragment, but visibility is controlled here. 310 mInviteTab = (TextView) view.findViewById(R.id.show_invite); 311 312 mMessageTab.setOnClickListener(this); 313 mAttachmentTab.setOnClickListener(this); 314 mShowPicturesTab.setOnClickListener(this); 315 mInviteTab.setOnClickListener(this); 316 317 mAttachmentsScroll = view.findViewById(R.id.attachments_scroll); 318 mInviteScroll = view.findViewById(R.id.invite_scroll); 319 320 mMessageContentView.setVerticalScrollBarEnabled(false); 321 mMessageContentView.getSettings().setBlockNetworkLoads(true); 322 mMessageContentView.getSettings().setSupportZoom(false); 323 mMessageContentView.setWebViewClient(new CustomWebViewClient()); 324 return view; 325 } 326 327 @Override 328 public void onActivityCreated(Bundle savedInstanceState) { 329 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 330 Log.d(Email.LOG_TAG, "MessageViewFragment onActivityCreated"); 331 } 332 super.onActivityCreated(savedInstanceState); 333 mController.addResultCallback(mControllerCallback); 334 } 335 336 @Override 337 public void onStart() { 338 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 339 Log.d(Email.LOG_TAG, "MessageViewFragment onStart"); 340 } 341 super.onStart(); 342 mStarted = true; 343 if (isMessageSpecified()) { 344 openMessageIfStarted(); 345 } 346 } 347 348 @Override 349 public void onResume() { 350 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 351 Log.d(Email.LOG_TAG, "MessageViewFragment onResume"); 352 } 353 super.onResume(); 354 } 355 356 @Override 357 public void onPause() { 358 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 359 Log.d(Email.LOG_TAG, "MessageViewFragment onPause"); 360 } 361 super.onPause(); 362 } 363 364 @Override 365 public void onStop() { 366 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 367 Log.d(Email.LOG_TAG, "MessageViewFragment onStop"); 368 } 369 mStarted = false; 370 super.onStop(); 371 } 372 373 @Override 374 public void onDestroy() { 375 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 376 Log.d(Email.LOG_TAG, "MessageViewFragment onDestroy"); 377 } 378 mCallback.onMessageViewGone(); 379 mController.removeResultCallback(mControllerCallback); 380 cancelAllTasks(); 381 mMessageContentView.destroy(); 382 mMessageContentView = null; 383 super.onDestroy(); 384 } 385 386 @Override 387 public void onSaveInstanceState(Bundle outState) { 388 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 389 Log.d(Email.LOG_TAG, "MessageViewFragment onSaveInstanceState"); 390 } 391 super.onSaveInstanceState(outState); 392 } 393 394 public void setCallback(Callback callback) { 395 mCallback = (callback == null) ? EmptyCallback.INSTANCE : callback; 396 } 397 398 private void cancelAllTasks() { 399 mMessageObserver.unregister(); 400 Utility.cancelTaskInterrupt(mLoadMessageTask); 401 mLoadMessageTask = null; 402 Utility.cancelTaskInterrupt(mReloadMessageTask); 403 mReloadMessageTask = null; 404 Utility.cancelTaskInterrupt(mLoadBodyTask); 405 mLoadBodyTask = null; 406 Utility.cancelTaskInterrupt(mLoadAttachmentsTask); 407 mLoadAttachmentsTask = null; 408 } 409 410 /** 411 * Subclass returns true if which message to open is already specified by the activity. 412 */ 413 protected abstract boolean isMessageSpecified(); 414 415 protected final Controller getController() { 416 return mController; 417 } 418 419 protected final Callback getCallback() { 420 return mCallback; 421 } 422 423 protected final Message getMessage() { 424 return mMessage; 425 } 426 427 protected final boolean isMessageOpen() { 428 return mMessage != null; 429 } 430 431 /** 432 * Returns the account id of the current message, or -1 if unknown (message not open yet, or 433 * viewing an EML message). 434 */ 435 public long getAccountId() { 436 return mAccountId; 437 } 438 439 /** 440 * Clear all the content -- should be called when the fragment is hidden. 441 */ 442 public void clearContent() { 443 cancelAllTasks(); 444 resetView(); 445 } 446 447 protected final void openMessageIfStarted() { 448 if (!mStarted) { 449 return; 450 } 451 cancelAllTasks(); 452 resetView(); 453 mLoadMessageTask = new LoadMessageTask(true); 454 mLoadMessageTask.execute(); 455 } 456 457 protected void resetView() { 458 setCurrentTab(TAB_MESSAGE); 459 updateTabFlags(0); 460 if (mMessageContentView != null) { 461 mMessageContentView.getSettings().setBlockNetworkLoads(true); 462 mMessageContentView.scrollTo(0, 0); 463 mMessageContentView.loadUrl("file:///android_asset/empty.html"); 464 } 465 mAttachmentsScroll.scrollTo(0, 0); 466 mInviteScroll.scrollTo(0, 0); 467 mAttachments.removeAllViews(); 468 mAttachments.setVisibility(View.GONE); 469 mAttachmentIcon.setVisibility(View.GONE); 470 initContactStatusViews(); 471 } 472 473 private void initContactStatusViews() { 474 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED; 475 mQuickContactLookupUri = null; 476 mSenderPresenceView.setImageResource(ContactStatusLoader.PRESENCE_UNKNOWN_RESOURCE_ID); 477 mFromBadge.setImageToDefault(); 478 } 479 480 protected final void addTabFlags(int tabFlags) { 481 updateTabFlags(mTabFlags | tabFlags); 482 } 483 484 private final void clearTabFlags(int tabFlags) { 485 updateTabFlags(mTabFlags & ~tabFlags); 486 } 487 488 private void setAttachmentCount(int count) { 489 mAttachmentCount = count; 490 if (mAttachmentCount > 0) { 491 addTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 492 } else { 493 clearTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 494 } 495 } 496 497 private static void makeVisible(View v, boolean visible) { 498 v.setVisibility(visible ? View.VISIBLE : View.GONE); 499 } 500 501 /** 502 * Update the visual of the tabs. (visibility, text, etc) 503 */ 504 private void updateTabFlags(int tabFlags) { 505 mTabFlags = tabFlags; 506 mTabSection.setVisibility(tabFlags == 0 ? View.GONE : View.VISIBLE); 507 if (tabFlags == 0) { 508 return; 509 } 510 boolean messageTabVisible = (tabFlags & (TAB_FLAGS_HAS_INVITE | TAB_FLAGS_HAS_ATTACHMENT)) 511 != 0; 512 makeVisible(mMessageTab, messageTabVisible); 513 makeVisible(mInviteTab, (tabFlags & TAB_FLAGS_HAS_INVITE) != 0); 514 makeVisible(mAttachmentTab, (tabFlags & TAB_FLAGS_HAS_ATTACHMENT) != 0); 515 makeVisible(mShowPicturesTab, (tabFlags & TAB_FLAGS_HAS_PICTURES) != 0); 516 mShowPicturesTab.setEnabled((tabFlags & TAB_FLAGS_PICTURE_LOADED) == 0); 517 518 mAttachmentTab.setText(mContext.getResources().getQuantityString( 519 R.plurals.message_view_show_attachments_action, 520 mAttachmentCount, mAttachmentCount)); 521 } 522 523 /** 524 * Set the current tab. 525 * 526 * @param tab any of {@link #TAB_MESSAGE}, {@link #TAB_ATTACHMENT} or {@link #TAB_INVITE}. 527 */ 528 private void setCurrentTab(int tab) { 529 mCurrentTab = tab; 530 makeVisible(mMessageContentView, tab == TAB_MESSAGE); 531 makeVisible(mAttachmentsScroll, tab == TAB_ATTACHMENT); 532 makeVisible(mInviteScroll, tab == TAB_INVITE); 533 534 // TODO Make the current tab prominent 535 } 536 537 /** 538 * Handle clicks on sender, which shows {@link QuickContact} or prompts to add 539 * the sender as a contact. 540 */ 541 private void onClickSender() { 542 final Address senderEmail = Address.unpackFirst(mMessage.mFrom); 543 if (senderEmail == null) return; 544 545 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED) { 546 // Status not loaded yet. 547 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED_TRIGGERED; 548 return; 549 } 550 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED) { 551 return; // Already clicked, and waiting for the data. 552 } 553 554 if (mQuickContactLookupUri != null) { 555 QuickContact.showQuickContact(mContext, mFromBadge, mQuickContactLookupUri, 556 QuickContact.MODE_LARGE, null); 557 } else { 558 // No matching contact, ask user to create one 559 final Uri mailUri = Uri.fromParts("mailto", senderEmail.getAddress(), null); 560 final Intent intent = new Intent(ContactsContract.Intents.SHOW_OR_CREATE_CONTACT, 561 mailUri); 562 563 // Pass along full E-mail string for possible create dialog 564 intent.putExtra(ContactsContract.Intents.EXTRA_CREATE_DESCRIPTION, 565 senderEmail.toString()); 566 567 // Only provide personal name hint if we have one 568 final String senderPersonal = senderEmail.getPersonal(); 569 if (!TextUtils.isEmpty(senderPersonal)) { 570 intent.putExtra(ContactsContract.Intents.Insert.NAME, senderPersonal); 571 } 572 intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 573 574 startActivity(intent); 575 } 576 } 577 578 private static class ContactStatusLoaderCallbacks 579 implements LoaderCallbacks<ContactStatusLoader.Result> { 580 private static final String BUNDLE_EMAIL_ADDRESS = "email"; 581 private final MessageViewFragmentBase mFragment; 582 583 public ContactStatusLoaderCallbacks(MessageViewFragmentBase fragment) { 584 mFragment = fragment; 585 } 586 587 public static Bundle createArguments(String emailAddress) { 588 Bundle b = new Bundle(); 589 b.putString(BUNDLE_EMAIL_ADDRESS, emailAddress); 590 return b; 591 } 592 593 @Override 594 public Loader<ContactStatusLoader.Result> onCreateLoader(int id, Bundle args) { 595 return new ContactStatusLoader(mFragment.mContext, 596 args.getString(BUNDLE_EMAIL_ADDRESS)); 597 } 598 599 @Override 600 public void onLoadFinished(Loader<ContactStatusLoader.Result> loader, 601 ContactStatusLoader.Result result) { 602 boolean triggered = 603 (mFragment.mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED); 604 mFragment.mContactStatusState = CONTACT_STATUS_STATE_LOADED; 605 mFragment.mQuickContactLookupUri = result.mLookupUri; 606 mFragment.mSenderPresenceView.setImageResource(result.mPresenceResId); 607 if (result.mPhoto != null) { // photo will be null if unknown. 608 mFragment.mFromBadge.setImageBitmap(result.mPhoto); 609 } 610 if (triggered) { 611 mFragment.onClickSender(); 612 } 613 } 614 } 615 616 private void onSaveAttachment(AttachmentInfo info) { 617 if (!Utility.isExternalStorageMounted()) { 618 /* 619 * Abort early if there's no place to save the attachment. We don't want to spend 620 * the time downloading it and then abort. 621 */ 622 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 623 return; 624 } 625 Attachment attachment = Attachment.restoreAttachmentWithId(mContext, info.attachmentId); 626 Uri attachmentUri = AttachmentProvider.getAttachmentUri(mAccountId, attachment.mId); 627 628 try { 629 File file = Utility.createUniqueFile(Environment.getExternalStorageDirectory(), 630 attachment.mFileName); 631 Uri contentUri = AttachmentProvider.resolveAttachmentIdToContentUri( 632 mContext.getContentResolver(), attachmentUri); 633 InputStream in = mContext.getContentResolver().openInputStream(contentUri); 634 OutputStream out = new FileOutputStream(file); 635 IOUtils.copy(in, out); 636 out.flush(); 637 out.close(); 638 in.close(); 639 640 Utility.showToast(getActivity(), String.format( 641 mContext.getString(R.string.message_view_status_attachment_saved), 642 file.getName())); 643 MediaOpener.scanAndOpen(getActivity(), file); 644 } catch (IOException ioe) { 645 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 646 } 647 } 648 649 private void onViewAttachment(AttachmentInfo info) { 650 Uri attachmentUri = AttachmentProvider.getAttachmentUri(mAccountId, info.attachmentId); 651 Uri contentUri = AttachmentProvider.resolveAttachmentIdToContentUri( 652 mContext.getContentResolver(), attachmentUri); 653 try { 654 Intent intent = new Intent(Intent.ACTION_VIEW); 655 intent.setData(contentUri); 656 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION 657 | Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 658 startActivity(intent); 659 } catch (ActivityNotFoundException e) { 660 Utility.showToast(getActivity(), R.string.message_view_display_attachment_toast); 661 // TODO: Add a proper warning message (and lots of upstream cleanup to prevent 662 // it from happening) in the next release. 663 } 664 } 665 666 private void onLoadAttachment(AttachmentInfo attachment) { 667 attachment.loadButton.setVisibility(View.GONE); 668 attachment.cancelButton.setVisibility(View.VISIBLE); 669 ProgressBar bar = attachment.progressView; 670 bar.setVisibility(View.VISIBLE); 671 bar.setIndeterminate(true); 672 mController.loadAttachment(attachment.attachmentId, mMessageId, mAccountId); 673 } 674 675 private void onCancelAttachment(AttachmentInfo attachment) { 676 // Don't change button states if we couldn't cancel the download 677 if (AttachmentDownloadService.cancelQueuedAttachment(attachment.attachmentId)) { 678 attachment.loadButton.setVisibility(View.VISIBLE); 679 attachment.cancelButton.setVisibility(View.GONE); 680 ProgressBar bar = attachment.progressView; 681 bar.setVisibility(View.GONE); 682 } 683 } 684 685 /** 686 * Called by ControllerResults. Show the "View" and "Save" buttons; hide "Load" 687 * 688 * @param attachmentId the attachment that was just downloaded 689 */ 690 private void doFinishLoadAttachment(long attachmentId) { 691 AttachmentInfo info = findAttachmentInfo(attachmentId); 692 if (info != null) { 693 info.loadButton.setVisibility(View.INVISIBLE); 694 info.loadButton.setVisibility(View.GONE); 695 if (!TextUtils.isEmpty(info.name)) { 696 info.saveButton.setVisibility(View.VISIBLE); 697 } 698 info.viewButton.setVisibility(View.VISIBLE); 699 } 700 } 701 702 private void onShowPicturesInHtml() { 703 if (mMessageContentView != null) { 704 mMessageContentView.getSettings().setBlockNetworkLoads(false); 705 if (mHtmlTextWebView != null) { 706 mMessageContentView.loadDataWithBaseURL("email://", mHtmlTextWebView, 707 "text/html", "utf-8", null); 708 } 709 addTabFlags(TAB_FLAGS_PICTURE_LOADED); 710 } 711 } 712 713 @Override 714 public void onClick(View view) { 715 if (!isMessageOpen()) { 716 return; // Ignore. 717 } 718 switch (view.getId()) { 719 case R.id.from: 720 case R.id.badge: 721 case R.id.presence: 722 onClickSender(); 723 break; 724 case R.id.load: 725 onLoadAttachment((AttachmentInfo) view.getTag()); 726 break; 727 case R.id.save: 728 onSaveAttachment((AttachmentInfo) view.getTag()); 729 break; 730 case R.id.view: 731 onViewAttachment((AttachmentInfo) view.getTag()); 732 break; 733 case R.id.cancel: 734 onCancelAttachment((AttachmentInfo) view.getTag()); 735 break; 736 case R.id.show_message: 737 setCurrentTab(TAB_MESSAGE); 738 break; 739 case R.id.show_invite: 740 setCurrentTab(TAB_INVITE); 741 break; 742 case R.id.show_attachments: 743 setCurrentTab(TAB_ATTACHMENT); 744 break; 745 case R.id.show_pictures: 746 onShowPicturesInHtml(); 747 break; 748 } 749 } 750 751 /** 752 * Start loading contact photo and presence. 753 */ 754 private void queryContactStatus() { 755 initContactStatusViews(); // Initialize the state, just in case. 756 757 // Find the sender email address, and start presence check. 758 if (mMessage != null) { 759 Address sender = Address.unpackFirst(mMessage.mFrom); 760 if (sender != null) { 761 String email = sender.getAddress(); 762 if (email != null) { 763 getLoaderManager().restartLoader(PHOTO_LOADER_ID, 764 ContactStatusLoaderCallbacks.createArguments(email), 765 new ContactStatusLoaderCallbacks(this)); 766 } 767 } 768 } 769 } 770 771 /** 772 * Called by {@link LoadMessageTask} and {@link ReloadMessageTask} to load a message in a 773 * subclass specific way. 774 * 775 * NOTE This method is called on a worker thread! Implementations must properly synchronize 776 * when accessing members. This method may be called after or even at the same time as 777 * {@link #clearContent()}. 778 */ 779 protected abstract Message openMessageSync(); 780 781 /** 782 * Async task for loading a single message outside of the UI thread 783 */ 784 private class LoadMessageTask extends AsyncTask<Void, Void, Message> { 785 786 private final boolean mOkToFetch; 787 private int mMailboxType; 788 789 /** 790 * Special constructor to cache some local info 791 */ 792 public LoadMessageTask(boolean okToFetch) { 793 mOkToFetch = okToFetch; 794 } 795 796 @Override 797 protected Message doInBackground(Void... params) { 798 Message message = openMessageSync(); 799 if (message != null) { 800 mMailboxType = Mailbox.getMailboxType(mContext, message.mMailboxKey); 801 if (mMailboxType == -1) { 802 message = null; // mailbox removed?? 803 } 804 } 805 return message; 806 } 807 808 @Override 809 protected void onPostExecute(Message message) { 810 if (isCancelled()) { 811 return; 812 } 813 if (message == null) { 814 mCallback.onMessageNotExists(); 815 return; 816 } 817 mMessageId = message.mId; 818 819 reloadUiFromMessage(message, mOkToFetch); 820 queryContactStatus(); 821 onMessageShown(mMessageId, mMailboxType); 822 } 823 } 824 825 /** 826 * Kicked by {@link MessageObserver}. Reload the message and update the views. 827 */ 828 private class ReloadMessageTask extends AsyncTask<Void, Void, Message> { 829 @Override 830 protected Message doInBackground(Void... params) { 831 if (!isMessageSpecified()) { // just in case 832 return null; 833 } 834 return openMessageSync(); 835 } 836 837 @Override 838 protected void onPostExecute(Message message) { 839 if (isCancelled()) { 840 return; 841 } 842 if (message == null || message.mMailboxKey != mMessage.mMailboxKey) { 843 // Message deleted or moved. 844 mCallback.onMessageNotExists(); 845 return; 846 } 847 mMessage = message; 848 updateHeaderView(mMessage); 849 } 850 } 851 852 /** 853 * Called when a message is shown to the user. 854 */ 855 protected void onMessageShown(long messageId, int mailboxType) { 856 mCallback.onMessageViewShown(mailboxType); 857 } 858 859 /** 860 * Called when the message body is loaded. 861 */ 862 protected void onPostLoadBody() { 863 } 864 865 /** 866 * Async task for loading a single message body outside of the UI thread 867 */ 868 private class LoadBodyTask extends AsyncTask<Void, Void, String[]> { 869 870 private long mId; 871 private boolean mErrorLoadingMessageBody; 872 873 /** 874 * Special constructor to cache some local info 875 */ 876 public LoadBodyTask(long messageId) { 877 mId = messageId; 878 } 879 880 @Override 881 protected String[] doInBackground(Void... params) { 882 try { 883 String text = null; 884 String html = Body.restoreBodyHtmlWithMessageId(mContext, mId); 885 if (html == null) { 886 text = Body.restoreBodyTextWithMessageId(mContext, mId); 887 } 888 return new String[] { text, html }; 889 } catch (RuntimeException re) { 890 // This catches SQLiteException as well as other RTE's we've seen from the 891 // database calls, such as IllegalStateException 892 Log.d(Email.LOG_TAG, "Exception while loading message body: " + re.toString()); 893 mErrorLoadingMessageBody = true; 894 return null; 895 } 896 } 897 898 @Override 899 protected void onPostExecute(String[] results) { 900 if (results == null || isCancelled()) { 901 if (mErrorLoadingMessageBody) { 902 Utility.showToast(getActivity(), R.string.error_loading_message_body); 903 } 904 return; 905 } 906 reloadUiFromBody(results[0], results[1]); // text, html 907 onPostLoadBody(); 908 } 909 } 910 911 /** 912 * Async task for loading attachments 913 * 914 * Note: This really should only be called when the message load is complete - or, we should 915 * leave open a listener so the attachments can fill in as they are discovered. In either case, 916 * this implementation is incomplete, as it will fail to refresh properly if the message is 917 * partially loaded at this time. 918 */ 919 private class LoadAttachmentsTask extends AsyncTask<Long, Void, Attachment[]> { 920 @Override 921 protected Attachment[] doInBackground(Long... messageIds) { 922 return Attachment.restoreAttachmentsWithMessageId(mContext, messageIds[0]); 923 } 924 925 @Override 926 protected void onPostExecute(Attachment[] attachments) { 927 if (isCancelled() || attachments == null) { 928 return; 929 } 930 boolean htmlChanged = false; 931 setAttachmentCount(attachments.length); 932 for (Attachment attachment : attachments) { 933 if (mHtmlTextRaw != null && attachment.mContentId != null 934 && attachment.mContentUri != null) { 935 // for html body, replace CID for inline images 936 // Regexp which matches ' src="cid:contentId"'. 937 String contentIdRe = 938 "\\s+(?i)src=\"cid(?-i):\\Q" + attachment.mContentId + "\\E\""; 939 String srcContentUri = " src=\"" + attachment.mContentUri + "\""; 940 mHtmlTextRaw = mHtmlTextRaw.replaceAll(contentIdRe, srcContentUri); 941 htmlChanged = true; 942 } else { 943 addAttachment(attachment); 944 } 945 } 946 mHtmlTextWebView = mHtmlTextRaw; 947 mHtmlTextRaw = null; 948 if (htmlChanged && mMessageContentView != null) { 949 mMessageContentView.loadDataWithBaseURL("email://", mHtmlTextWebView, 950 "text/html", "utf-8", null); 951 } 952 } 953 } 954 955 private Bitmap getPreviewIcon(AttachmentInfo attachment) { 956 try { 957 return BitmapFactory.decodeStream( 958 mContext.getContentResolver().openInputStream( 959 AttachmentProvider.getAttachmentThumbnailUri( 960 mAccountId, attachment.attachmentId, 961 PREVIEW_ICON_WIDTH, 962 PREVIEW_ICON_HEIGHT))); 963 } catch (Exception e) { 964 Log.d(Email.LOG_TAG, "Attachment preview failed with exception " + e.getMessage()); 965 return null; 966 } 967 } 968 969 private void updateAttachmentThumbnail(long attachmentId) { 970 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 971 AttachmentInfo attachment = (AttachmentInfo) mAttachments.getChildAt(i).getTag(); 972 if (attachment.attachmentId == attachmentId) { 973 Bitmap previewIcon = getPreviewIcon(attachment); 974 if (previewIcon != null) { 975 attachment.iconView.setImageBitmap(previewIcon); 976 } 977 return; 978 } 979 } 980 } 981 982 /** 983 * Copy data from a cursor-refreshed attachment into the UI. Called from UI thread. 984 * 985 * @param attachment A single attachment loaded from the provider 986 */ 987 private void addAttachment(Attachment attachment) { 988 AttachmentInfo attachmentInfo = new AttachmentInfo(); 989 attachmentInfo.size = attachment.mSize; 990 attachmentInfo.contentType = 991 AttachmentProvider.inferMimeType(attachment.mFileName, attachment.mMimeType); 992 attachmentInfo.name = attachment.mFileName; 993 attachmentInfo.attachmentId = attachment.mId; 994 995 LayoutInflater inflater = getActivity().getLayoutInflater(); 996 View view = inflater.inflate(R.layout.message_view_attachment, null); 997 998 TextView attachmentName = (TextView)view.findViewById(R.id.attachment_name); 999 TextView attachmentInfoView = (TextView)view.findViewById(R.id.attachment_info); 1000 ImageView attachmentIcon = (ImageView)view.findViewById(R.id.attachment_icon); 1001 Button attachmentView = (Button)view.findViewById(R.id.view); 1002 Button attachmentSave = (Button)view.findViewById(R.id.save); 1003 Button attachmentLoad = (Button)view.findViewById(R.id.load); 1004 Button attachmentCancel = (Button)view.findViewById(R.id.cancel); 1005 ProgressBar attachmentProgress = (ProgressBar)view.findViewById(R.id.progress); 1006 1007 // TODO: Remove this test (acceptable types = everything; unacceptable = nothing) 1008 if ((!MimeUtility.mimeTypeMatches(attachmentInfo.contentType, 1009 Email.ACCEPTABLE_ATTACHMENT_VIEW_TYPES)) 1010 || (MimeUtility.mimeTypeMatches(attachmentInfo.contentType, 1011 Email.UNACCEPTABLE_ATTACHMENT_VIEW_TYPES))) { 1012 attachmentView.setVisibility(View.GONE); 1013 } 1014 1015 if (attachmentInfo.size > Email.MAX_ATTACHMENT_DOWNLOAD_SIZE) { 1016 attachmentView.setVisibility(View.GONE); 1017 attachmentSave.setVisibility(View.GONE); 1018 } 1019 1020 attachmentInfo.viewButton = attachmentView; 1021 attachmentInfo.saveButton = attachmentSave; 1022 attachmentInfo.loadButton = attachmentLoad; 1023 attachmentInfo.cancelButton = attachmentCancel; 1024 attachmentInfo.iconView = attachmentIcon; 1025 attachmentInfo.progressView = attachmentProgress; 1026 1027 // If the attachment is loaded, show 100% progress 1028 // Note that for POP3 messages, the user will only see "Open" and "Save" since the entire 1029 // message is loaded before being shown. 1030 if (Utility.attachmentExists(mContext, attachment)) { 1031 // Hide "Load", show "View" and "Save" 1032 attachmentProgress.setVisibility(View.VISIBLE); 1033 attachmentProgress.setProgress(100); 1034 attachmentSave.setVisibility(View.VISIBLE); 1035 attachmentView.setVisibility(View.VISIBLE); 1036 attachmentLoad.setVisibility(View.INVISIBLE); 1037 attachmentCancel.setVisibility(View.GONE); 1038 } else { 1039 // Show "Load"; hide "View" and "Save" 1040 attachmentSave.setVisibility(View.INVISIBLE); 1041 attachmentView.setVisibility(View.INVISIBLE); 1042 // If the attachment is queued, show the indeterminate progress bar. From this point,. 1043 // any progress changes will cause this to be replaced by the normal progress bar 1044 if (AttachmentDownloadService.isAttachmentQueued(attachment.mId)){ 1045 attachmentProgress.setVisibility(View.VISIBLE); 1046 attachmentProgress.setIndeterminate(true); 1047 attachmentLoad.setVisibility(View.GONE); 1048 attachmentCancel.setVisibility(View.VISIBLE); 1049 } else { 1050 attachmentLoad.setVisibility(View.VISIBLE); 1051 attachmentCancel.setVisibility(View.GONE); 1052 } 1053 } 1054 1055 // Don't enable the "save" button if we've got no place to save the file 1056 if (!Utility.isExternalStorageMounted()) { 1057 attachmentSave.setEnabled(false); 1058 } 1059 1060 view.setTag(attachmentInfo); 1061 attachmentView.setOnClickListener(this); 1062 attachmentView.setTag(attachmentInfo); 1063 attachmentSave.setOnClickListener(this); 1064 attachmentSave.setTag(attachmentInfo); 1065 attachmentLoad.setOnClickListener(this); 1066 attachmentLoad.setTag(attachmentInfo); 1067 attachmentCancel.setOnClickListener(this); 1068 attachmentCancel.setTag(attachmentInfo); 1069 1070 attachmentName.setText(attachmentInfo.name); 1071 attachmentInfoView.setText(Utility.formatSize(mContext, attachmentInfo.size)); 1072 1073 Bitmap previewIcon = getPreviewIcon(attachmentInfo); 1074 if (previewIcon != null) { 1075 attachmentIcon.setImageBitmap(previewIcon); 1076 } 1077 1078 mAttachments.addView(view); 1079 mAttachments.setVisibility(View.VISIBLE); 1080 } 1081 1082 /** 1083 * Reload the UI from a provider cursor. {@link LoadMessageTask#onPostExecute} calls it. 1084 * 1085 * Update the header views, and start loading the body. 1086 * 1087 * @param message A copy of the message loaded from the database 1088 * @param okToFetch If true, and message is not fully loaded, it's OK to fetch from 1089 * the network. Use false to prevent looping here. 1090 */ 1091 protected void reloadUiFromMessage(Message message, boolean okToFetch) { 1092 mMessage = message; 1093 mAccountId = message.mAccountKey; 1094 1095 mMessageObserver.register(ContentUris.withAppendedId(Message.CONTENT_URI, mMessage.mId)); 1096 1097 updateHeaderView(mMessage); 1098 1099 // Handle partially-loaded email, as follows: 1100 // 1. Check value of message.mFlagLoaded 1101 // 2. If != LOADED, ask controller to load it 1102 // 3. Controller callback (after loaded) should trigger LoadBodyTask & LoadAttachmentsTask 1103 // 4. Else start the loader tasks right away (message already loaded) 1104 if (okToFetch && message.mFlagLoaded != Message.FLAG_LOADED_COMPLETE) { 1105 mControllerCallback.getWrappee().setWaitForLoadMessageId(message.mId); 1106 mController.loadMessageForView(message.mId); 1107 } else { 1108 mControllerCallback.getWrappee().setWaitForLoadMessageId(-1); 1109 // Ask for body 1110 mLoadBodyTask = new LoadBodyTask(message.mId); 1111 mLoadBodyTask.execute(); 1112 } 1113 } 1114 1115 protected void updateHeaderView(Message message) { 1116 mSubjectView.setText(message.mSubject); 1117 mFromView.setText(Address.toFriendly(Address.unpack(message.mFrom))); 1118 Date date = new Date(message.mTimeStamp); 1119 mTimeView.setText(mTimeFormat.format(date)); 1120 mDateView.setText(Utility.isDateToday(date) ? null : mDateFormat.format(date)); 1121 mToView.setText(Address.toFriendly(Address.unpack(message.mTo))); 1122 String friendlyCc = Address.toFriendly(Address.unpack(message.mCc)); 1123 mCcView.setText(friendlyCc); 1124 mCcContainerView.setVisibility((friendlyCc != null) ? View.VISIBLE : View.GONE); 1125 mAttachmentIcon.setVisibility(message.mAttachments != null ? View.VISIBLE : View.GONE); 1126 } 1127 1128 /** 1129 * Reload the body from the provider cursor. This must only be called from the UI thread. 1130 * 1131 * @param bodyText text part 1132 * @param bodyHtml html part 1133 * 1134 * TODO deal with html vs text and many other issues <- WHAT DOES IT MEAN?? 1135 */ 1136 private void reloadUiFromBody(String bodyText, String bodyHtml) { 1137 String text = null; 1138 mHtmlTextRaw = null; 1139 boolean hasImages = false; 1140 1141 if (bodyHtml == null) { 1142 text = bodyText; 1143 /* 1144 * Convert the plain text to HTML 1145 */ 1146 StringBuffer sb = new StringBuffer("<html><body>"); 1147 if (text != null) { 1148 // Escape any inadvertent HTML in the text message 1149 text = EmailHtmlUtil.escapeCharacterToDisplay(text); 1150 // Find any embedded URL's and linkify 1151 Matcher m = Patterns.WEB_URL.matcher(text); 1152 while (m.find()) { 1153 int start = m.start(); 1154 /* 1155 * WEB_URL_PATTERN may match domain part of email address. To detect 1156 * this false match, the character just before the matched string 1157 * should not be '@'. 1158 */ 1159 if (start == 0 || text.charAt(start - 1) != '@') { 1160 String url = m.group(); 1161 Matcher proto = WEB_URL_PROTOCOL.matcher(url); 1162 String link; 1163 if (proto.find()) { 1164 // This is work around to force URL protocol part be lower case, 1165 // because WebView could follow only lower case protocol link. 1166 link = proto.group().toLowerCase() + url.substring(proto.end()); 1167 } else { 1168 // Patterns.WEB_URL matches URL without protocol part, 1169 // so added default protocol to link. 1170 link = "http://" + url; 1171 } 1172 String href = String.format("<a href=\"%s\">%s</a>", link, url); 1173 m.appendReplacement(sb, href); 1174 } 1175 else { 1176 m.appendReplacement(sb, "$0"); 1177 } 1178 } 1179 m.appendTail(sb); 1180 } 1181 sb.append("</body></html>"); 1182 text = sb.toString(); 1183 } else { 1184 text = bodyHtml; 1185 mHtmlTextRaw = bodyHtml; 1186 hasImages = IMG_TAG_START_REGEX.matcher(text).find(); 1187 } 1188 1189 // TODO this is not really accurate. 1190 // - Images aren't the only network resources. (e.g. CSS) 1191 // - If images are attached to the email and small enough, we download them at once, 1192 // and won't need network access when they're shown. 1193 if (hasImages) { 1194 addTabFlags(TAB_FLAGS_HAS_PICTURES); 1195 } 1196 if (mMessageContentView != null) { 1197 mMessageContentView.loadDataWithBaseURL("email://", text, "text/html", "utf-8", null); 1198 } 1199 1200 // Ask for attachments after body 1201 mLoadAttachmentsTask = new LoadAttachmentsTask(); 1202 mLoadAttachmentsTask.execute(mMessage.mId); 1203 1204 mIsMessageLoadedForTest = true; 1205 } 1206 1207 /** 1208 * Overrides for WebView behaviors. 1209 */ 1210 private class CustomWebViewClient extends WebViewClient { 1211 @Override 1212 public boolean shouldOverrideUrlLoading(WebView view, String url) { 1213 return mCallback.onUrlInMessageClicked(url); 1214 } 1215 } 1216 1217 private View findAttachmentView(long attachmentId) { 1218 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1219 View view = mAttachments.getChildAt(i); 1220 AttachmentInfo attachment = (AttachmentInfo) view.getTag(); 1221 if (attachment.attachmentId == attachmentId) { 1222 return view; 1223 } 1224 } 1225 return null; 1226 } 1227 1228 private AttachmentInfo findAttachmentInfo(long attachmentId) { 1229 View view = findAttachmentView(attachmentId); 1230 if (view != null) { 1231 return (AttachmentInfo)view.getTag(); 1232 } 1233 return null; 1234 } 1235 1236 /** 1237 * Controller results listener. We wrap it with {@link ControllerResultUiThreadWrapper}, 1238 * so all methods are called on the UI thread. 1239 */ 1240 private class ControllerResults extends Controller.Result { 1241 private long mWaitForLoadMessageId; 1242 1243 public void setWaitForLoadMessageId(long messageId) { 1244 mWaitForLoadMessageId = messageId; 1245 } 1246 1247 @Override 1248 public void loadMessageForViewCallback(MessagingException result, long messageId, 1249 int progress) { 1250 if (messageId != mWaitForLoadMessageId) { 1251 // We are not waiting for this message to load, so exit quickly 1252 return; 1253 } 1254 if (result == null) { 1255 switch (progress) { 1256 case 0: 1257 mCallback.onLoadMessageStarted(); 1258 loadBodyContent("file:///android_asset/loading.html"); 1259 break; 1260 case 100: 1261 mWaitForLoadMessageId = -1; 1262 mCallback.onLoadMessageFinished(); 1263 // reload UI and reload everything else too 1264 // pass false to LoadMessageTask to prevent looping here 1265 cancelAllTasks(); 1266 mLoadMessageTask = new LoadMessageTask(false); 1267 mLoadMessageTask.execute(); 1268 break; 1269 default: 1270 // do nothing - we don't have a progress bar at this time 1271 break; 1272 } 1273 } else { 1274 mWaitForLoadMessageId = -1; 1275 mCallback.onLoadMessageError(); 1276 Utility.showToast(getActivity(), R.string.status_network_error); 1277 loadBodyContent("file:///android_asset/empty.html"); 1278 } 1279 } 1280 1281 private void loadBodyContent(String uri) { 1282 if (mMessageContentView != null) { 1283 mMessageContentView.loadUrl(uri); 1284 } 1285 } 1286 1287 @Override 1288 public void loadAttachmentCallback(MessagingException result, long messageId, 1289 long attachmentId, int progress) { 1290 if (messageId == mMessageId) { 1291 if (result == null) { 1292 showAttachmentProgress(attachmentId, progress); 1293 switch (progress) { 1294 case 100: 1295 updateAttachmentThumbnail(attachmentId); 1296 doFinishLoadAttachment(attachmentId); 1297 break; 1298 default: 1299 // do nothing - we don't have a progress bar at this time 1300 break; 1301 } 1302 } else { 1303 AttachmentInfo attachment = findAttachmentInfo(attachmentId); 1304 attachment.cancelButton.setVisibility(View.GONE); 1305 attachment.loadButton.setVisibility(View.VISIBLE); 1306 attachment.progressView.setVisibility(View.INVISIBLE); 1307 if (result.getCause() instanceof IOException) { 1308 Utility.showToast(getActivity(), R.string.status_network_error); 1309 } else { 1310 Utility.showToast(getActivity(), String.format( 1311 mContext.getString( 1312 R.string.message_view_load_attachment_failed_toast), 1313 attachment.name)); 1314 } 1315 } 1316 } 1317 } 1318 1319 private void showAttachmentProgress(long attachmentId, int progress) { 1320 AttachmentInfo attachment = findAttachmentInfo(attachmentId); 1321 if (attachment != null) { 1322 ProgressBar bar = attachment.progressView; 1323 if (progress == 0) { 1324 // When the download starts, we can get rid of the indeterminate bar 1325 bar.setVisibility(View.VISIBLE); 1326 bar.setIndeterminate(false); 1327 // And we're not implementing stop of in-progress downloads 1328 attachment.cancelButton.setVisibility(View.GONE); 1329 } 1330 bar.setProgress(progress); 1331 } 1332 } 1333 } 1334 1335 /** 1336 * Class to detect update on the current message (e.g. toggle star). When it gets content 1337 * change notifications, it kicks {@link ReloadMessageTask}. 1338 * 1339 * TODO Use the new Throttle class. 1340 */ 1341 private class MessageObserver extends ContentObserver implements Runnable { 1342 private final Throttle mThrottle; 1343 private final ContentResolver mContentResolver; 1344 1345 private boolean mRegistered; 1346 1347 public MessageObserver(Handler handler, Context context) { 1348 super(handler); 1349 mContentResolver = context.getContentResolver(); 1350 mThrottle = new Throttle("MessageObserver", this, handler); 1351 } 1352 1353 public void unregister() { 1354 if (!mRegistered) { 1355 return; 1356 } 1357 mThrottle.cancelScheduledCallback(); 1358 mContentResolver.unregisterContentObserver(this); 1359 mRegistered = false; 1360 } 1361 1362 public void register(Uri notifyUri) { 1363 unregister(); 1364 mContentResolver.registerContentObserver(notifyUri, true, this); 1365 mRegistered = true; 1366 } 1367 1368 @Override 1369 public boolean deliverSelfNotifications() { 1370 return true; 1371 } 1372 1373 @Override 1374 public void onChange(boolean selfChange) { 1375 mThrottle.onEvent(); 1376 } 1377 1378 /** 1379 * This method is delay-called by {@link Throttle} on the UI thread. Need to make 1380 * sure if the fragment is still valid. (i.e. don't reload if clearContent() has been 1381 * called.) 1382 */ 1383 @Override 1384 public void run() { 1385 if (!isMessageSpecified()) { 1386 return; 1387 } 1388 Utility.cancelTaskInterrupt(mReloadMessageTask); 1389 mReloadMessageTask = new ReloadMessageTask(); 1390 mReloadMessageTask.execute(); 1391 } 1392 } 1393 1394 public boolean isMessageLoadedForTest() { 1395 return mIsMessageLoadedForTest; 1396 } 1397 1398 public void clearIsMessageLoadedForTest() { 1399 mIsMessageLoadedForTest = true; 1400 } 1401} 1402