MessageViewFragmentBase.java revision b715ea1d768de273cc4bf0d6b052c61ee1245cba
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.database.ContentObserver; 49import android.graphics.Bitmap; 50import android.graphics.BitmapFactory; 51import android.graphics.drawable.ColorDrawable; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.AsyncTask; 55import android.os.Bundle; 56import android.os.Environment; 57import android.os.Handler; 58import android.provider.ContactsContract; 59import android.provider.ContactsContract.QuickContact; 60import android.text.TextUtils; 61import android.util.Log; 62import android.util.Patterns; 63import android.view.LayoutInflater; 64import android.view.View; 65import android.view.ViewGroup; 66import android.webkit.WebSettings; 67import android.webkit.WebView; 68import android.webkit.WebViewClient; 69import android.widget.Button; 70import android.widget.ImageView; 71import android.widget.LinearLayout; 72import android.widget.ProgressBar; 73import android.widget.TextView; 74 75import java.io.File; 76import java.io.FileOutputStream; 77import java.io.IOException; 78import java.io.InputStream; 79import java.io.OutputStream; 80import java.util.Date; 81import java.util.regex.Matcher; 82import java.util.regex.Pattern; 83 84// TODO Better handling of config changes. 85// - Restore "Show pictures" state, scroll position and current tab 86// - Retain the content; don't kick 3 async tasks every time 87 88/** 89 * Base class for {@link MessageViewFragment} and {@link MessageFileViewFragment}. 90 * 91 * See {@link MessageViewBase} for the class relation diagram. 92 */ 93public abstract class MessageViewFragmentBase extends Fragment implements View.OnClickListener { 94 private static final int PHOTO_LOADER_ID = 1; 95 private Context mContext; 96 97 // Regex that matches start of img tag. '<(?i)img\s+'. 98 private static final Pattern IMG_TAG_START_REGEX = Pattern.compile("<(?i)img\\s+"); 99 // Regex that matches Web URL protocol part as case insensitive. 100 private static final Pattern WEB_URL_PROTOCOL = Pattern.compile("(?i)http|https://"); 101 102 private static int PREVIEW_ICON_WIDTH = 62; 103 private static int PREVIEW_ICON_HEIGHT = 62; 104 105 private TextView mSubjectView; 106 private TextView mFromNameView; 107 private TextView mFromAddressView; 108 private TextView mDateTimeView; 109 private TextView mToView; 110 private TextView mCcView; 111 private View mCcContainerView; 112 private TextView mBccView; 113 private View mBccContainerView; 114 private WebView mMessageContentView; 115 private LinearLayout mAttachments; 116 private View mTabSection; 117 private ImageView mFromBadge; 118 private ImageView mSenderPresenceView; 119 120 private TextView mMessageTab; 121 private TextView mAttachmentTab; 122 private TextView mInviteTab; 123 // It is not really a tab, but looks like one of them. 124 private TextView mShowPicturesTab; 125 126 private View mAttachmentsScroll; 127 private View mInviteScroll; 128 129 private long mAccountId = -1; 130 private long mMessageId = -1; 131 private Message mMessage; 132 133 private LoadMessageTask mLoadMessageTask; 134 private ReloadMessageTask mReloadMessageTask; 135 private LoadBodyTask mLoadBodyTask; 136 private LoadAttachmentsTask mLoadAttachmentsTask; 137 138 private java.text.DateFormat mDateFormat; 139 private java.text.DateFormat mTimeFormat; 140 141 private Controller mController; 142 private ControllerResultUiThreadWrapper<ControllerResults> mControllerCallback; 143 144 // contains the HTML body. Is used by LoadAttachmentTask to display inline images. 145 // is null most of the time, is used transiently to pass info to LoadAttachementTask 146 private String mHtmlTextRaw; 147 148 // contains the HTML content as set in WebView. 149 private String mHtmlTextWebView; 150 151 private boolean mResumed; 152 private boolean mLoadWhenResumed; 153 154 private boolean mIsMessageLoadedForTest; 155 156 private MessageObserver mMessageObserver; 157 158 private static final int CONTACT_STATUS_STATE_UNLOADED = 0; 159 private static final int CONTACT_STATUS_STATE_UNLOADED_TRIGGERED = 1; 160 private static final int CONTACT_STATUS_STATE_LOADED = 2; 161 162 private int mContactStatusState; 163 private Uri mQuickContactLookupUri; 164 165 /** Flag for {@link #mTabFlags}: Message has attachment(s) */ 166 protected static final int TAB_FLAGS_HAS_ATTACHMENT = 1; 167 168 /** 169 * Flag for {@link #mTabFlags}: Message contains invite. This flag is only set by 170 * {@link MessageViewFragment}. 171 */ 172 protected static final int TAB_FLAGS_HAS_INVITE = 2; 173 174 /** Flag for {@link #mTabFlags}: Message contains pictures */ 175 protected static final int TAB_FLAGS_HAS_PICTURES = 4; 176 177 /** Flag for {@link #mTabFlags}: "Show pictures" has already been pressed */ 178 protected static final int TAB_FLAGS_PICTURE_LOADED = 8; 179 180 /** 181 * Flags to control the tabs. 182 * @see #updateTabFlags(int) 183 */ 184 private int mTabFlags; 185 186 /** # of attachments in the current message */ 187 private int mAttachmentCount; 188 189 // Use (random) large values, to avoid confusion with TAB_FLAGS_* 190 protected static final int TAB_MESSAGE = 101; 191 protected static final int TAB_INVITE = 102; 192 protected static final int TAB_ATTACHMENT = 103; 193 194 /** 195 * Currently visible tab. Any of {@link #TAB_MESSAGE}, {@link #TAB_INVITE} or 196 * {@link #TAB_ATTACHMENT}. 197 * 198 * Note we don't retain this value through configuration changes, as restoring the current tab 199 * would be clumsy with the current implementation where we load Message/Body/Attachments 200 * separately. (e.g. # of attachments can't be obtained quickly enough to update the UI 201 * after screen rotation.) 202 */ 203 private int mCurrentTab; 204 205 /** 206 * Encapsulates known information about a single attachment. 207 */ 208 private static class AttachmentInfo { 209 public String name; 210 public String contentType; 211 public long size; 212 public long attachmentId; 213 public Button viewButton; 214 public Button saveButton; 215 public Button loadButton; 216 public Button cancelButton; 217 public ImageView iconView; 218 public ProgressBar progressView; 219 } 220 221 public interface Callback { 222 /** Called when the fragment is about to show up, or show a different message. */ 223 public void onMessageViewShown(int mailboxType); 224 225 /** Called when the fragment is about to be destroyed. */ 226 public void onMessageViewGone(); 227 228 /** 229 * Called when a link in a message is clicked. 230 * 231 * @param url link url that's clicked. 232 * @return true if handled, false otherwise. 233 */ 234 public boolean onUrlInMessageClicked(String url); 235 236 /** 237 * Called when the message specified doesn't exist, or is deleted/moved. 238 */ 239 public void onMessageNotExists(); 240 241 /** Called when it starts loading a message. */ 242 public void onLoadMessageStarted(); 243 244 /** Called when it successfully finishes loading a message. */ 245 public void onLoadMessageFinished(); 246 247 /** Called when an error occurred during loading a message. */ 248 public void onLoadMessageError(); 249 } 250 251 public static class EmptyCallback implements Callback { 252 public static final Callback INSTANCE = new EmptyCallback(); 253 @Override public void onMessageViewShown(int mailboxType) {} 254 @Override public void onMessageViewGone() {} 255 @Override public void onLoadMessageError() {} 256 @Override public void onLoadMessageFinished() {} 257 @Override public void onLoadMessageStarted() {} 258 @Override public void onMessageNotExists() {} 259 @Override 260 public boolean onUrlInMessageClicked(String url) { 261 return false; 262 } 263 } 264 265 private Callback mCallback = EmptyCallback.INSTANCE; 266 267 @Override 268 public void onCreate(Bundle savedInstanceState) { 269 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 270 Log.d(Email.LOG_TAG, "MessageViewFragment onCreate"); 271 } 272 super.onCreate(savedInstanceState); 273 274 mContext = getActivity().getApplicationContext(); 275 276 mControllerCallback = new ControllerResultUiThreadWrapper<ControllerResults>( 277 new Handler(), new ControllerResults()); 278 279 mDateFormat = android.text.format.DateFormat.getDateFormat(mContext); // short format 280 mTimeFormat = android.text.format.DateFormat.getTimeFormat(mContext); // 12/24 date format 281 282 mController = Controller.getInstance(mContext); 283 mMessageObserver = new MessageObserver(new Handler(), mContext); 284 } 285 286 @Override 287 public View onCreateView( 288 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 289 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 290 Log.d(Email.LOG_TAG, "MessageViewFragment onCreateView"); 291 } 292 final View view = inflater.inflate(R.layout.message_view_fragment, container, false); 293 294 mSubjectView = (TextView) view.findViewById(R.id.subject); 295 mFromNameView = (TextView) view.findViewById(R.id.from_name); 296 mFromAddressView = (TextView) view.findViewById(R.id.from_address); 297 mToView = (TextView) view.findViewById(R.id.to); 298 mCcView = (TextView) view.findViewById(R.id.cc); 299 mCcContainerView = view.findViewById(R.id.cc_container); 300 mBccView = (TextView) view.findViewById(R.id.bcc); 301 mBccContainerView = view.findViewById(R.id.bcc_container); 302 mDateTimeView = (TextView) view.findViewById(R.id.datetime); 303 mMessageContentView = (WebView) view.findViewById(R.id.message_content); 304 mAttachments = (LinearLayout) view.findViewById(R.id.attachments); 305 mTabSection = view.findViewById(R.id.message_tabs_section); 306 mFromBadge = (ImageView) view.findViewById(R.id.badge); 307 mSenderPresenceView = (ImageView) view.findViewById(R.id.presence); 308 309 mFromNameView.setOnClickListener(this); 310 mFromAddressView.setOnClickListener(this); 311 mFromBadge.setOnClickListener(this); 312 mSenderPresenceView.setOnClickListener(this); 313 314 mMessageTab = (TextView) view.findViewById(R.id.show_message); 315 mAttachmentTab = (TextView) view.findViewById(R.id.show_attachments); 316 mShowPicturesTab = (TextView) view.findViewById(R.id.show_pictures); 317 // Invite is only used in MessageViewFragment, but visibility is controlled here. 318 mInviteTab = (TextView) view.findViewById(R.id.show_invite); 319 320 mMessageTab.setOnClickListener(this); 321 mAttachmentTab.setOnClickListener(this); 322 mShowPicturesTab.setOnClickListener(this); 323 mInviteTab.setOnClickListener(this); 324 325 mAttachmentsScroll = view.findViewById(R.id.attachments_scroll); 326 mInviteScroll = view.findViewById(R.id.invite_scroll); 327 328 mMessageContentView.setVerticalScrollBarEnabled(false); 329 WebSettings webSettings = mMessageContentView.getSettings(); 330 webSettings.setBlockNetworkLoads(true); 331 webSettings.setSupportZoom(true); 332 webSettings.setBuiltInZoomControls(true); 333 mMessageContentView.setWebViewClient(new CustomWebViewClient()); 334 return view; 335 } 336 337 @Override 338 public void onActivityCreated(Bundle savedInstanceState) { 339 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 340 Log.d(Email.LOG_TAG, "MessageViewFragment onActivityCreated"); 341 } 342 super.onActivityCreated(savedInstanceState); 343 mController.addResultCallback(mControllerCallback); 344 } 345 346 @Override 347 public void onStart() { 348 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 349 Log.d(Email.LOG_TAG, "MessageViewFragment onStart"); 350 } 351 super.onStart(); 352 } 353 354 @Override 355 public void onResume() { 356 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 357 Log.d(Email.LOG_TAG, "MessageViewFragment onResume"); 358 } 359 super.onResume(); 360 361 mResumed = true; 362 if (isMessageSpecified()) { 363 if (mLoadWhenResumed) { 364 loadMessageIfResumed(); 365 } else { 366 // This means, the user comes back from other (full-screen) activities. 367 // In this case we've already loaded the content, so don't load it again, 368 // which results in resetting all view state, including WebView zoom/pan 369 // and the current tab. 370 } 371 } 372 } 373 374 @Override 375 public void onPause() { 376 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 377 Log.d(Email.LOG_TAG, "MessageViewFragment onPause"); 378 } 379 mResumed = false; 380 super.onPause(); 381 } 382 383 @Override 384 public void onStop() { 385 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 386 Log.d(Email.LOG_TAG, "MessageViewFragment onStop"); 387 } 388 super.onStop(); 389 } 390 391 @Override 392 public void onDestroy() { 393 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 394 Log.d(Email.LOG_TAG, "MessageViewFragment onDestroy"); 395 } 396 mCallback.onMessageViewGone(); 397 mController.removeResultCallback(mControllerCallback); 398 clearContent(); 399 mMessageContentView.destroy(); 400 mMessageContentView = null; 401 super.onDestroy(); 402 } 403 404 @Override 405 public void onSaveInstanceState(Bundle outState) { 406 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 407 Log.d(Email.LOG_TAG, "MessageViewFragment onSaveInstanceState"); 408 } 409 super.onSaveInstanceState(outState); 410 } 411 412 public void setCallback(Callback callback) { 413 mCallback = (callback == null) ? EmptyCallback.INSTANCE : callback; 414 } 415 416 private void cancelAllTasks() { 417 mMessageObserver.unregister(); 418 Utility.cancelTaskInterrupt(mLoadMessageTask); 419 mLoadMessageTask = null; 420 Utility.cancelTaskInterrupt(mReloadMessageTask); 421 mReloadMessageTask = null; 422 Utility.cancelTaskInterrupt(mLoadBodyTask); 423 mLoadBodyTask = null; 424 Utility.cancelTaskInterrupt(mLoadAttachmentsTask); 425 mLoadAttachmentsTask = null; 426 } 427 428 /** 429 * Subclass returns true if which message to open is already specified by the activity. 430 */ 431 protected abstract boolean isMessageSpecified(); 432 433 protected final Controller getController() { 434 return mController; 435 } 436 437 protected final Callback getCallback() { 438 return mCallback; 439 } 440 441 protected final Message getMessage() { 442 return mMessage; 443 } 444 445 protected final boolean isMessageOpen() { 446 return mMessage != null; 447 } 448 449 /** 450 * Returns the account id of the current message, or -1 if unknown (message not open yet, or 451 * viewing an EML message). 452 */ 453 public long getAccountId() { 454 return mAccountId; 455 } 456 457 /** 458 * Clear all the content -- should be called when the fragment is hidden. 459 */ 460 public void clearContent() { 461 cancelAllTasks(); 462 resetView(); 463 } 464 465 protected final void loadMessageIfResumed() { 466 if (!mResumed) { 467 mLoadWhenResumed = true; 468 return; 469 } 470 mLoadWhenResumed = false; 471 cancelAllTasks(); 472 resetView(); 473 mLoadMessageTask = new LoadMessageTask(true); 474 mLoadMessageTask.execute(); 475 } 476 477 protected void resetView() { 478 setCurrentTab(TAB_MESSAGE); 479 updateTabFlags(0); 480 if (mMessageContentView != null) { 481 mMessageContentView.getSettings().setBlockNetworkLoads(true); 482 mMessageContentView.scrollTo(0, 0); 483 mMessageContentView.loadUrl("file:///android_asset/empty.html"); 484 485 // Dynamic configuration of WebView 486 WebSettings.TextSize textZoom; 487 switch (Preferences.getPreferences(mContext).getTextZoom()) { 488 case Preferences.TEXT_ZOOM_TINY: textZoom = WebSettings.TextSize.SMALLEST; break; 489 case Preferences.TEXT_ZOOM_SMALL: textZoom = WebSettings.TextSize.SMALLER; break; 490 case Preferences.TEXT_ZOOM_NORMAL: textZoom = WebSettings.TextSize.NORMAL; break; 491 case Preferences.TEXT_ZOOM_LARGE: textZoom = WebSettings.TextSize.LARGER; break; 492 case Preferences.TEXT_ZOOM_HUGE: textZoom = WebSettings.TextSize.LARGEST; break; 493 default: textZoom = WebSettings.TextSize.NORMAL; break; 494 } 495 mMessageContentView.getSettings().setTextSize(textZoom); 496 } 497 mAttachmentsScroll.scrollTo(0, 0); 498 mInviteScroll.scrollTo(0, 0); 499 mAttachments.removeAllViews(); 500 mAttachments.setVisibility(View.GONE); 501 initContactStatusViews(); 502 } 503 504 private void initContactStatusViews() { 505 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED; 506 mQuickContactLookupUri = null; 507 mSenderPresenceView.setImageResource(ContactStatusLoader.PRESENCE_UNKNOWN_RESOURCE_ID); 508 showDefaultQuickContactBadgeImage(); 509 } 510 511 private static final Drawable sEmptyBadgeDrawable = new ColorDrawable(0xFF808080); 512 513 private void showDefaultQuickContactBadgeImage() { 514 // STOPSHIP Show the default 'Andy' icon. 515 mFromBadge.setImageDrawable(sEmptyBadgeDrawable); 516 } 517 518 protected final void addTabFlags(int tabFlags) { 519 updateTabFlags(mTabFlags | tabFlags); 520 } 521 522 private final void clearTabFlags(int tabFlags) { 523 updateTabFlags(mTabFlags & ~tabFlags); 524 } 525 526 private void setAttachmentCount(int count) { 527 mAttachmentCount = count; 528 if (mAttachmentCount > 0) { 529 addTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 530 } else { 531 clearTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 532 } 533 } 534 535 private static void makeVisible(View v, boolean visible) { 536 v.setVisibility(visible ? View.VISIBLE : View.GONE); 537 } 538 539 /** 540 * Update the visual of the tabs. (visibility, text, etc) 541 */ 542 private void updateTabFlags(int tabFlags) { 543 mTabFlags = tabFlags; 544 mTabSection.setVisibility(tabFlags == 0 ? View.GONE : View.VISIBLE); 545 if (tabFlags == 0) { 546 return; 547 } 548 boolean messageTabVisible = (tabFlags & (TAB_FLAGS_HAS_INVITE | TAB_FLAGS_HAS_ATTACHMENT)) 549 != 0; 550 makeVisible(mMessageTab, messageTabVisible); 551 makeVisible(mInviteTab, (tabFlags & TAB_FLAGS_HAS_INVITE) != 0); 552 makeVisible(mAttachmentTab, (tabFlags & TAB_FLAGS_HAS_ATTACHMENT) != 0); 553 makeVisible(mShowPicturesTab, (tabFlags & TAB_FLAGS_HAS_PICTURES) != 0); 554 mShowPicturesTab.setEnabled((tabFlags & TAB_FLAGS_PICTURE_LOADED) == 0); 555 556 mAttachmentTab.setText(mContext.getResources().getQuantityString( 557 R.plurals.message_view_show_attachments_action, 558 mAttachmentCount, mAttachmentCount)); 559 } 560 561 /** 562 * Set the current tab. 563 * 564 * @param tab any of {@link #TAB_MESSAGE}, {@link #TAB_ATTACHMENT} or {@link #TAB_INVITE}. 565 */ 566 private void setCurrentTab(int tab) { 567 mCurrentTab = tab; 568 makeVisible(mMessageContentView, tab == TAB_MESSAGE); 569 makeVisible(mAttachmentsScroll, tab == TAB_ATTACHMENT); 570 makeVisible(mInviteScroll, tab == TAB_INVITE); 571 572 // TODO Make the current tab prominent 573 } 574 575 /** 576 * Handle clicks on sender, which shows {@link QuickContact} or prompts to add 577 * the sender as a contact. 578 */ 579 private void onClickSender() { 580 final Address senderEmail = Address.unpackFirst(mMessage.mFrom); 581 if (senderEmail == null) return; 582 583 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED) { 584 // Status not loaded yet. 585 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED_TRIGGERED; 586 return; 587 } 588 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED) { 589 return; // Already clicked, and waiting for the data. 590 } 591 592 if (mQuickContactLookupUri != null) { 593 QuickContact.showQuickContact(mContext, mFromBadge, mQuickContactLookupUri, 594 QuickContact.MODE_LARGE, null); 595 } else { 596 // No matching contact, ask user to create one 597 final Uri mailUri = Uri.fromParts("mailto", senderEmail.getAddress(), null); 598 final Intent intent = new Intent(ContactsContract.Intents.SHOW_OR_CREATE_CONTACT, 599 mailUri); 600 601 // Pass along full E-mail string for possible create dialog 602 intent.putExtra(ContactsContract.Intents.EXTRA_CREATE_DESCRIPTION, 603 senderEmail.toString()); 604 605 // Only provide personal name hint if we have one 606 final String senderPersonal = senderEmail.getPersonal(); 607 if (!TextUtils.isEmpty(senderPersonal)) { 608 intent.putExtra(ContactsContract.Intents.Insert.NAME, senderPersonal); 609 } 610 intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 611 612 startActivity(intent); 613 } 614 } 615 616 private static class ContactStatusLoaderCallbacks 617 implements LoaderCallbacks<ContactStatusLoader.Result> { 618 private static final String BUNDLE_EMAIL_ADDRESS = "email"; 619 private final MessageViewFragmentBase mFragment; 620 621 public ContactStatusLoaderCallbacks(MessageViewFragmentBase fragment) { 622 mFragment = fragment; 623 } 624 625 public static Bundle createArguments(String emailAddress) { 626 Bundle b = new Bundle(); 627 b.putString(BUNDLE_EMAIL_ADDRESS, emailAddress); 628 return b; 629 } 630 631 @Override 632 public Loader<ContactStatusLoader.Result> onCreateLoader(int id, Bundle args) { 633 return new ContactStatusLoader(mFragment.mContext, 634 args.getString(BUNDLE_EMAIL_ADDRESS)); 635 } 636 637 @Override 638 public void onLoadFinished(Loader<ContactStatusLoader.Result> loader, 639 ContactStatusLoader.Result result) { 640 boolean triggered = 641 (mFragment.mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED); 642 mFragment.mContactStatusState = CONTACT_STATUS_STATE_LOADED; 643 mFragment.mQuickContactLookupUri = result.mLookupUri; 644 mFragment.mSenderPresenceView.setImageResource(result.mPresenceResId); 645 if (result.mPhoto != null) { // photo will be null if unknown. 646 mFragment.mFromBadge.setImageBitmap(result.mPhoto); 647 } 648 if (triggered) { 649 mFragment.onClickSender(); 650 } 651 } 652 } 653 654 private void onSaveAttachment(AttachmentInfo info) { 655 if (!Utility.isExternalStorageMounted()) { 656 /* 657 * Abort early if there's no place to save the attachment. We don't want to spend 658 * the time downloading it and then abort. 659 */ 660 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 661 return; 662 } 663 Attachment attachment = Attachment.restoreAttachmentWithId(mContext, info.attachmentId); 664 Uri attachmentUri = AttachmentProvider.getAttachmentUri(mAccountId, attachment.mId); 665 666 try { 667 File file = Utility.createUniqueFile(Environment.getExternalStorageDirectory(), 668 attachment.mFileName); 669 Uri contentUri = AttachmentProvider.resolveAttachmentIdToContentUri( 670 mContext.getContentResolver(), attachmentUri); 671 InputStream in = mContext.getContentResolver().openInputStream(contentUri); 672 OutputStream out = new FileOutputStream(file); 673 IOUtils.copy(in, out); 674 out.flush(); 675 out.close(); 676 in.close(); 677 678 Utility.showToast(getActivity(), String.format( 679 mContext.getString(R.string.message_view_status_attachment_saved), 680 file.getName())); 681 MediaOpener.scanAndOpen(getActivity(), file); 682 } catch (IOException ioe) { 683 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 684 } 685 } 686 687 private void onViewAttachment(AttachmentInfo info) { 688 Uri attachmentUri = AttachmentProvider.getAttachmentUri(mAccountId, info.attachmentId); 689 Uri contentUri = AttachmentProvider.resolveAttachmentIdToContentUri( 690 mContext.getContentResolver(), attachmentUri); 691 try { 692 Intent intent = new Intent(Intent.ACTION_VIEW); 693 intent.setData(contentUri); 694 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION 695 | Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 696 startActivity(intent); 697 } catch (ActivityNotFoundException e) { 698 Utility.showToast(getActivity(), R.string.message_view_display_attachment_toast); 699 // TODO: Add a proper warning message (and lots of upstream cleanup to prevent 700 // it from happening) in the next release. 701 } 702 } 703 704 private void onLoadAttachment(final AttachmentInfo attachment) { 705 attachment.loadButton.setVisibility(View.GONE); 706 // If there's nothing in the download queue, we'll probably start right away so wait a 707 // second before showing the cancel button 708 if (AttachmentDownloadService.getQueueSize() == 0) { 709 // Set to invisible; if the button is still in this state one second from now, we'll 710 // assume the download won't start right away, and we make the cancel button visible 711 attachment.cancelButton.setVisibility(View.INVISIBLE); 712 // Create the timed task that will change the button state 713 new AsyncTask<Void, Void, Void>() { 714 @Override 715 protected Void doInBackground(Void... params) { 716 try { 717 Thread.sleep(1000L); 718 } catch (InterruptedException e) { } 719 return null; 720 } 721 @Override 722 protected void onPostExecute(Void result) { 723 if (attachment.cancelButton.getVisibility() == View.INVISIBLE) { 724 attachment.cancelButton.setVisibility(View.VISIBLE); 725 } 726 } 727 }.execute(); 728 } else { 729 attachment.cancelButton.setVisibility(View.VISIBLE); 730 } 731 ProgressBar bar = attachment.progressView; 732 bar.setVisibility(View.VISIBLE); 733 bar.setIndeterminate(true); 734 mController.loadAttachment(attachment.attachmentId, mMessageId, mAccountId); 735 } 736 737 private void onCancelAttachment(AttachmentInfo attachment) { 738 // Don't change button states if we couldn't cancel the download 739 if (AttachmentDownloadService.cancelQueuedAttachment(attachment.attachmentId)) { 740 attachment.loadButton.setVisibility(View.VISIBLE); 741 attachment.cancelButton.setVisibility(View.GONE); 742 ProgressBar bar = attachment.progressView; 743 bar.setVisibility(View.GONE); 744 } 745 } 746 747 /** 748 * Called by ControllerResults. Show the "View" and "Save" buttons; hide "Load" 749 * 750 * @param attachmentId the attachment that was just downloaded 751 */ 752 private void doFinishLoadAttachment(long attachmentId) { 753 AttachmentInfo info = findAttachmentInfo(attachmentId); 754 if (info != null) { 755 info.loadButton.setVisibility(View.INVISIBLE); 756 info.loadButton.setVisibility(View.GONE); 757 if (!TextUtils.isEmpty(info.name)) { 758 info.saveButton.setVisibility(View.VISIBLE); 759 } 760 info.viewButton.setVisibility(View.VISIBLE); 761 } 762 } 763 764 private void onShowPicturesInHtml() { 765 if (mMessageContentView != null) { 766 mMessageContentView.getSettings().setBlockNetworkLoads(false); 767 if (mHtmlTextWebView != null) { 768 mMessageContentView.loadDataWithBaseURL("email://", mHtmlTextWebView, 769 "text/html", "utf-8", null); 770 } 771 addTabFlags(TAB_FLAGS_PICTURE_LOADED); 772 } 773 } 774 775 @Override 776 public void onClick(View view) { 777 if (!isMessageOpen()) { 778 return; // Ignore. 779 } 780 switch (view.getId()) { 781 case R.id.from_name: 782 case R.id.from_address: 783 case R.id.badge: 784 case R.id.presence: 785 onClickSender(); 786 break; 787 case R.id.load: 788 onLoadAttachment((AttachmentInfo) view.getTag()); 789 break; 790 case R.id.save: 791 onSaveAttachment((AttachmentInfo) view.getTag()); 792 break; 793 case R.id.view: 794 onViewAttachment((AttachmentInfo) view.getTag()); 795 break; 796 case R.id.cancel: 797 onCancelAttachment((AttachmentInfo) view.getTag()); 798 break; 799 case R.id.show_message: 800 setCurrentTab(TAB_MESSAGE); 801 break; 802 case R.id.show_invite: 803 setCurrentTab(TAB_INVITE); 804 break; 805 case R.id.show_attachments: 806 setCurrentTab(TAB_ATTACHMENT); 807 break; 808 case R.id.show_pictures: 809 onShowPicturesInHtml(); 810 break; 811 } 812 } 813 814 /** 815 * Start loading contact photo and presence. 816 */ 817 private void queryContactStatus() { 818 initContactStatusViews(); // Initialize the state, just in case. 819 820 // Find the sender email address, and start presence check. 821 if (mMessage != null) { 822 Address sender = Address.unpackFirst(mMessage.mFrom); 823 if (sender != null) { 824 String email = sender.getAddress(); 825 if (email != null) { 826 getLoaderManager().restartLoader(PHOTO_LOADER_ID, 827 ContactStatusLoaderCallbacks.createArguments(email), 828 new ContactStatusLoaderCallbacks(this)); 829 } 830 } 831 } 832 } 833 834 /** 835 * Called by {@link LoadMessageTask} and {@link ReloadMessageTask} to load a message in a 836 * subclass specific way. 837 * 838 * NOTE This method is called on a worker thread! Implementations must properly synchronize 839 * when accessing members. This method may be called after or even at the same time as 840 * {@link #clearContent()}. 841 * 842 * @param activity the parent activity. Subclass use it as a context, and to show a toast. 843 */ 844 protected abstract Message openMessageSync(Activity activity); 845 846 /** 847 * Async task for loading a single message outside of the UI thread 848 */ 849 private class LoadMessageTask extends AsyncTask<Void, Void, Message> { 850 851 private final boolean mOkToFetch; 852 private int mMailboxType; 853 854 /** 855 * Special constructor to cache some local info 856 */ 857 public LoadMessageTask(boolean okToFetch) { 858 mOkToFetch = okToFetch; 859 } 860 861 @Override 862 protected Message doInBackground(Void... params) { 863 Activity activity = getActivity(); 864 Message message = null; 865 if (activity != null) { 866 message = openMessageSync(activity); 867 } 868 if (message != null) { 869 mMailboxType = Mailbox.getMailboxType(mContext, message.mMailboxKey); 870 if (mMailboxType == -1) { 871 message = null; // mailbox removed?? 872 } 873 } 874 return message; 875 } 876 877 @Override 878 protected void onPostExecute(Message message) { 879 if (isCancelled()) { 880 return; 881 } 882 if (message == null) { 883 mCallback.onMessageNotExists(); 884 return; 885 } 886 mMessageId = message.mId; 887 888 reloadUiFromMessage(message, mOkToFetch); 889 queryContactStatus(); 890 onMessageShown(mMessageId, mMailboxType); 891 } 892 } 893 894 /** 895 * Kicked by {@link MessageObserver}. Reload the message and update the views. 896 */ 897 private class ReloadMessageTask extends AsyncTask<Void, Void, Message> { 898 @Override 899 protected Message doInBackground(Void... params) { 900 if (!isMessageSpecified()) { // just in case 901 return null; 902 } 903 Activity activity = getActivity(); 904 if (activity == null) { 905 return null; 906 } else { 907 return openMessageSync(activity); 908 } 909 } 910 911 @Override 912 protected void onPostExecute(Message message) { 913 if (isCancelled()) { 914 return; 915 } 916 if (message == null || message.mMailboxKey != mMessage.mMailboxKey) { 917 // Message deleted or moved. 918 mCallback.onMessageNotExists(); 919 return; 920 } 921 mMessage = message; 922 updateHeaderView(mMessage); 923 } 924 } 925 926 /** 927 * Called when a message is shown to the user. 928 */ 929 protected void onMessageShown(long messageId, int mailboxType) { 930 mCallback.onMessageViewShown(mailboxType); 931 } 932 933 /** 934 * Called when the message body is loaded. 935 */ 936 protected void onPostLoadBody() { 937 } 938 939 /** 940 * Async task for loading a single message body outside of the UI thread 941 */ 942 private class LoadBodyTask extends AsyncTask<Void, Void, String[]> { 943 944 private long mId; 945 private boolean mErrorLoadingMessageBody; 946 947 /** 948 * Special constructor to cache some local info 949 */ 950 public LoadBodyTask(long messageId) { 951 mId = messageId; 952 } 953 954 @Override 955 protected String[] doInBackground(Void... params) { 956 try { 957 String text = null; 958 String html = Body.restoreBodyHtmlWithMessageId(mContext, mId); 959 if (html == null) { 960 text = Body.restoreBodyTextWithMessageId(mContext, mId); 961 } 962 return new String[] { text, html }; 963 } catch (RuntimeException re) { 964 // This catches SQLiteException as well as other RTE's we've seen from the 965 // database calls, such as IllegalStateException 966 Log.d(Email.LOG_TAG, "Exception while loading message body: " + re.toString()); 967 mErrorLoadingMessageBody = true; 968 return null; 969 } 970 } 971 972 @Override 973 protected void onPostExecute(String[] results) { 974 if (results == null || isCancelled()) { 975 if (mErrorLoadingMessageBody) { 976 Utility.showToast(getActivity(), R.string.error_loading_message_body); 977 } 978 return; 979 } 980 reloadUiFromBody(results[0], results[1]); // text, html 981 onPostLoadBody(); 982 } 983 } 984 985 /** 986 * Async task for loading attachments 987 * 988 * Note: This really should only be called when the message load is complete - or, we should 989 * leave open a listener so the attachments can fill in as they are discovered. In either case, 990 * this implementation is incomplete, as it will fail to refresh properly if the message is 991 * partially loaded at this time. 992 */ 993 private class LoadAttachmentsTask extends AsyncTask<Long, Void, Attachment[]> { 994 @Override 995 protected Attachment[] doInBackground(Long... messageIds) { 996 return Attachment.restoreAttachmentsWithMessageId(mContext, messageIds[0]); 997 } 998 999 @Override 1000 protected void onPostExecute(Attachment[] attachments) { 1001 if (isCancelled() || attachments == null) { 1002 return; 1003 } 1004 boolean htmlChanged = false; 1005 setAttachmentCount(attachments.length); 1006 for (Attachment attachment : attachments) { 1007 if (mHtmlTextRaw != null && attachment.mContentId != null 1008 && attachment.mContentUri != null) { 1009 // for html body, replace CID for inline images 1010 // Regexp which matches ' src="cid:contentId"'. 1011 String contentIdRe = 1012 "\\s+(?i)src=\"cid(?-i):\\Q" + attachment.mContentId + "\\E\""; 1013 String srcContentUri = " src=\"" + attachment.mContentUri + "\""; 1014 mHtmlTextRaw = mHtmlTextRaw.replaceAll(contentIdRe, srcContentUri); 1015 htmlChanged = true; 1016 } else { 1017 addAttachment(attachment); 1018 } 1019 } 1020 mHtmlTextWebView = mHtmlTextRaw; 1021 mHtmlTextRaw = null; 1022 if (htmlChanged && mMessageContentView != null) { 1023 mMessageContentView.loadDataWithBaseURL("email://", mHtmlTextWebView, 1024 "text/html", "utf-8", null); 1025 } 1026 } 1027 } 1028 1029 private Bitmap getPreviewIcon(AttachmentInfo attachment) { 1030 try { 1031 return BitmapFactory.decodeStream( 1032 mContext.getContentResolver().openInputStream( 1033 AttachmentProvider.getAttachmentThumbnailUri( 1034 mAccountId, attachment.attachmentId, 1035 PREVIEW_ICON_WIDTH, 1036 PREVIEW_ICON_HEIGHT))); 1037 } catch (Exception e) { 1038 Log.d(Email.LOG_TAG, "Attachment preview failed with exception " + e.getMessage()); 1039 return null; 1040 } 1041 } 1042 1043 private void updateAttachmentThumbnail(long attachmentId) { 1044 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1045 AttachmentInfo attachment = (AttachmentInfo) mAttachments.getChildAt(i).getTag(); 1046 if (attachment.attachmentId == attachmentId) { 1047 Bitmap previewIcon = getPreviewIcon(attachment); 1048 if (previewIcon != null) { 1049 attachment.iconView.setImageBitmap(previewIcon); 1050 } 1051 return; 1052 } 1053 } 1054 } 1055 1056 /** 1057 * Copy data from a cursor-refreshed attachment into the UI. Called from UI thread. 1058 * 1059 * @param attachment A single attachment loaded from the provider 1060 */ 1061 private void addAttachment(Attachment attachment) { 1062 AttachmentInfo attachmentInfo = new AttachmentInfo(); 1063 attachmentInfo.size = attachment.mSize; 1064 attachmentInfo.contentType = 1065 AttachmentProvider.inferMimeType(attachment.mFileName, attachment.mMimeType); 1066 attachmentInfo.name = attachment.mFileName; 1067 attachmentInfo.attachmentId = attachment.mId; 1068 1069 LayoutInflater inflater = getActivity().getLayoutInflater(); 1070 View view = inflater.inflate(R.layout.message_view_attachment, null); 1071 1072 TextView attachmentName = (TextView)view.findViewById(R.id.attachment_name); 1073 TextView attachmentInfoView = (TextView)view.findViewById(R.id.attachment_info); 1074 ImageView attachmentIcon = (ImageView)view.findViewById(R.id.attachment_icon); 1075 Button attachmentView = (Button)view.findViewById(R.id.view); 1076 Button attachmentSave = (Button)view.findViewById(R.id.save); 1077 Button attachmentLoad = (Button)view.findViewById(R.id.load); 1078 Button attachmentCancel = (Button)view.findViewById(R.id.cancel); 1079 ProgressBar attachmentProgress = (ProgressBar)view.findViewById(R.id.progress); 1080 1081 // TODO: Remove this test (acceptable types = everything; unacceptable = nothing) 1082 if ((!MimeUtility.mimeTypeMatches(attachmentInfo.contentType, 1083 Email.ACCEPTABLE_ATTACHMENT_VIEW_TYPES)) 1084 || (MimeUtility.mimeTypeMatches(attachmentInfo.contentType, 1085 Email.UNACCEPTABLE_ATTACHMENT_VIEW_TYPES))) { 1086 attachmentView.setVisibility(View.GONE); 1087 } 1088 1089 if (attachmentInfo.size > Email.MAX_ATTACHMENT_DOWNLOAD_SIZE) { 1090 attachmentView.setVisibility(View.GONE); 1091 attachmentSave.setVisibility(View.GONE); 1092 } 1093 1094 attachmentInfo.viewButton = attachmentView; 1095 attachmentInfo.saveButton = attachmentSave; 1096 attachmentInfo.loadButton = attachmentLoad; 1097 attachmentInfo.cancelButton = attachmentCancel; 1098 attachmentInfo.iconView = attachmentIcon; 1099 attachmentInfo.progressView = attachmentProgress; 1100 1101 // If the attachment is loaded, show 100% progress 1102 // Note that for POP3 messages, the user will only see "Open" and "Save" since the entire 1103 // message is loaded before being shown. 1104 if (Utility.attachmentExists(mContext, attachment)) { 1105 // Hide "Load", show "View" and "Save" 1106 attachmentProgress.setVisibility(View.VISIBLE); 1107 attachmentProgress.setProgress(100); 1108 attachmentSave.setVisibility(View.VISIBLE); 1109 attachmentView.setVisibility(View.VISIBLE); 1110 attachmentLoad.setVisibility(View.INVISIBLE); 1111 attachmentCancel.setVisibility(View.GONE); 1112 } else { 1113 // Show "Load"; hide "View" and "Save" 1114 attachmentSave.setVisibility(View.INVISIBLE); 1115 attachmentView.setVisibility(View.INVISIBLE); 1116 // If the attachment is queued, show the indeterminate progress bar. From this point,. 1117 // any progress changes will cause this to be replaced by the normal progress bar 1118 if (AttachmentDownloadService.isAttachmentQueued(attachment.mId)){ 1119 attachmentProgress.setVisibility(View.VISIBLE); 1120 attachmentProgress.setIndeterminate(true); 1121 attachmentLoad.setVisibility(View.GONE); 1122 attachmentCancel.setVisibility(View.VISIBLE); 1123 } else { 1124 attachmentLoad.setVisibility(View.VISIBLE); 1125 attachmentCancel.setVisibility(View.GONE); 1126 } 1127 } 1128 1129 // Don't enable the "save" button if we've got no place to save the file 1130 if (!Utility.isExternalStorageMounted()) { 1131 attachmentSave.setEnabled(false); 1132 } 1133 1134 view.setTag(attachmentInfo); 1135 attachmentView.setOnClickListener(this); 1136 attachmentView.setTag(attachmentInfo); 1137 attachmentSave.setOnClickListener(this); 1138 attachmentSave.setTag(attachmentInfo); 1139 attachmentLoad.setOnClickListener(this); 1140 attachmentLoad.setTag(attachmentInfo); 1141 attachmentCancel.setOnClickListener(this); 1142 attachmentCancel.setTag(attachmentInfo); 1143 1144 attachmentName.setText(attachmentInfo.name); 1145 attachmentInfoView.setText(Utility.formatSize(mContext, attachmentInfo.size)); 1146 1147 Bitmap previewIcon = getPreviewIcon(attachmentInfo); 1148 if (previewIcon != null) { 1149 attachmentIcon.setImageBitmap(previewIcon); 1150 } 1151 1152 mAttachments.addView(view); 1153 mAttachments.setVisibility(View.VISIBLE); 1154 } 1155 1156 /** 1157 * Reload the UI from a provider cursor. {@link LoadMessageTask#onPostExecute} calls it. 1158 * 1159 * Update the header views, and start loading the body. 1160 * 1161 * @param message A copy of the message loaded from the database 1162 * @param okToFetch If true, and message is not fully loaded, it's OK to fetch from 1163 * the network. Use false to prevent looping here. 1164 */ 1165 protected void reloadUiFromMessage(Message message, boolean okToFetch) { 1166 mMessage = message; 1167 mAccountId = message.mAccountKey; 1168 1169 mMessageObserver.register(ContentUris.withAppendedId(Message.CONTENT_URI, mMessage.mId)); 1170 1171 updateHeaderView(mMessage); 1172 1173 // Handle partially-loaded email, as follows: 1174 // 1. Check value of message.mFlagLoaded 1175 // 2. If != LOADED, ask controller to load it 1176 // 3. Controller callback (after loaded) should trigger LoadBodyTask & LoadAttachmentsTask 1177 // 4. Else start the loader tasks right away (message already loaded) 1178 if (okToFetch && message.mFlagLoaded != Message.FLAG_LOADED_COMPLETE) { 1179 mControllerCallback.getWrappee().setWaitForLoadMessageId(message.mId); 1180 mController.loadMessageForView(message.mId); 1181 } else { 1182 mControllerCallback.getWrappee().setWaitForLoadMessageId(-1); 1183 // Ask for body 1184 mLoadBodyTask = new LoadBodyTask(message.mId); 1185 mLoadBodyTask.execute(); 1186 } 1187 } 1188 1189 protected void updateHeaderView(Message message) { 1190 mSubjectView.setText(message.mSubject); 1191 final Address from = Address.unpackFirst(message.mFrom); 1192 1193 // Set sender address/display name 1194 // Note we set " " for empty field, so TextView's won't get squashed. 1195 // Otherwise their height will be 0, which breaks the layout. 1196 if (from != null) { 1197 final String fromFriendly = from.toFriendly(); 1198 final String fromAddress = from.getAddress(); 1199 mFromNameView.setText(fromFriendly); 1200 mFromAddressView.setText(fromFriendly.equals(fromAddress) ? " " : fromAddress); 1201 } else { 1202 mFromNameView.setText(" "); 1203 mFromAddressView.setText(" "); 1204 } 1205 Date date = new Date(message.mTimeStamp); 1206 // STOPSHIP Use the same format as MessageListItem uses 1207 mDateTimeView.setText(mTimeFormat.format(date)); 1208 mToView.setText(Address.toFriendly(Address.unpack(message.mTo))); 1209 String friendlyCc = Address.toFriendly(Address.unpack(message.mCc)); 1210 mCcView.setText(friendlyCc); 1211 mCcContainerView.setVisibility((friendlyCc != null) ? View.VISIBLE : View.GONE); 1212 String friendlyBcc = Address.toFriendly(Address.unpack(message.mBcc)); 1213 mBccView.setText(friendlyBcc); 1214 mBccContainerView.setVisibility((friendlyBcc != null) ? View.VISIBLE : View.GONE); 1215 } 1216 1217 /** 1218 * Reload the body from the provider cursor. This must only be called from the UI thread. 1219 * 1220 * @param bodyText text part 1221 * @param bodyHtml html part 1222 * 1223 * TODO deal with html vs text and many other issues <- WHAT DOES IT MEAN?? 1224 */ 1225 private void reloadUiFromBody(String bodyText, String bodyHtml) { 1226 String text = null; 1227 mHtmlTextRaw = null; 1228 boolean hasImages = false; 1229 1230 if (bodyHtml == null) { 1231 text = bodyText; 1232 /* 1233 * Convert the plain text to HTML 1234 */ 1235 StringBuffer sb = new StringBuffer("<html><body>"); 1236 if (text != null) { 1237 // Escape any inadvertent HTML in the text message 1238 text = EmailHtmlUtil.escapeCharacterToDisplay(text); 1239 // Find any embedded URL's and linkify 1240 Matcher m = Patterns.WEB_URL.matcher(text); 1241 while (m.find()) { 1242 int start = m.start(); 1243 /* 1244 * WEB_URL_PATTERN may match domain part of email address. To detect 1245 * this false match, the character just before the matched string 1246 * should not be '@'. 1247 */ 1248 if (start == 0 || text.charAt(start - 1) != '@') { 1249 String url = m.group(); 1250 Matcher proto = WEB_URL_PROTOCOL.matcher(url); 1251 String link; 1252 if (proto.find()) { 1253 // This is work around to force URL protocol part be lower case, 1254 // because WebView could follow only lower case protocol link. 1255 link = proto.group().toLowerCase() + url.substring(proto.end()); 1256 } else { 1257 // Patterns.WEB_URL matches URL without protocol part, 1258 // so added default protocol to link. 1259 link = "http://" + url; 1260 } 1261 String href = String.format("<a href=\"%s\">%s</a>", link, url); 1262 m.appendReplacement(sb, href); 1263 } 1264 else { 1265 m.appendReplacement(sb, "$0"); 1266 } 1267 } 1268 m.appendTail(sb); 1269 } 1270 sb.append("</body></html>"); 1271 text = sb.toString(); 1272 } else { 1273 text = bodyHtml; 1274 mHtmlTextRaw = bodyHtml; 1275 hasImages = IMG_TAG_START_REGEX.matcher(text).find(); 1276 } 1277 1278 // TODO this is not really accurate. 1279 // - Images aren't the only network resources. (e.g. CSS) 1280 // - If images are attached to the email and small enough, we download them at once, 1281 // and won't need network access when they're shown. 1282 if (hasImages) { 1283 addTabFlags(TAB_FLAGS_HAS_PICTURES); 1284 } 1285 if (mMessageContentView != null) { 1286 mMessageContentView.loadDataWithBaseURL("email://", text, "text/html", "utf-8", null); 1287 } 1288 1289 // Ask for attachments after body 1290 mLoadAttachmentsTask = new LoadAttachmentsTask(); 1291 mLoadAttachmentsTask.execute(mMessage.mId); 1292 1293 mIsMessageLoadedForTest = true; 1294 } 1295 1296 /** 1297 * Overrides for WebView behaviors. 1298 */ 1299 private class CustomWebViewClient extends WebViewClient { 1300 @Override 1301 public boolean shouldOverrideUrlLoading(WebView view, String url) { 1302 return mCallback.onUrlInMessageClicked(url); 1303 } 1304 } 1305 1306 private View findAttachmentView(long attachmentId) { 1307 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1308 View view = mAttachments.getChildAt(i); 1309 AttachmentInfo attachment = (AttachmentInfo) view.getTag(); 1310 if (attachment.attachmentId == attachmentId) { 1311 return view; 1312 } 1313 } 1314 return null; 1315 } 1316 1317 private AttachmentInfo findAttachmentInfo(long attachmentId) { 1318 View view = findAttachmentView(attachmentId); 1319 if (view != null) { 1320 return (AttachmentInfo)view.getTag(); 1321 } 1322 return null; 1323 } 1324 1325 /** 1326 * Controller results listener. We wrap it with {@link ControllerResultUiThreadWrapper}, 1327 * so all methods are called on the UI thread. 1328 */ 1329 private class ControllerResults extends Controller.Result { 1330 private long mWaitForLoadMessageId; 1331 1332 public void setWaitForLoadMessageId(long messageId) { 1333 mWaitForLoadMessageId = messageId; 1334 } 1335 1336 @Override 1337 public void loadMessageForViewCallback(MessagingException result, long messageId, 1338 int progress) { 1339 if (messageId != mWaitForLoadMessageId) { 1340 // We are not waiting for this message to load, so exit quickly 1341 return; 1342 } 1343 if (result == null) { 1344 switch (progress) { 1345 case 0: 1346 mCallback.onLoadMessageStarted(); 1347 loadBodyContent("file:///android_asset/loading.html"); 1348 break; 1349 case 100: 1350 mWaitForLoadMessageId = -1; 1351 mCallback.onLoadMessageFinished(); 1352 // reload UI and reload everything else too 1353 // pass false to LoadMessageTask to prevent looping here 1354 cancelAllTasks(); 1355 mLoadMessageTask = new LoadMessageTask(false); 1356 mLoadMessageTask.execute(); 1357 break; 1358 default: 1359 // do nothing - we don't have a progress bar at this time 1360 break; 1361 } 1362 } else { 1363 mWaitForLoadMessageId = -1; 1364 mCallback.onLoadMessageError(); 1365 Utility.showToast(getActivity(), R.string.status_network_error); 1366 loadBodyContent("file:///android_asset/empty.html"); 1367 } 1368 } 1369 1370 private void loadBodyContent(String uri) { 1371 if (mMessageContentView != null) { 1372 mMessageContentView.loadUrl(uri); 1373 } 1374 } 1375 1376 @Override 1377 public void loadAttachmentCallback(MessagingException result, long messageId, 1378 long attachmentId, int progress) { 1379 if (messageId == mMessageId) { 1380 if (result == null) { 1381 showAttachmentProgress(attachmentId, progress); 1382 switch (progress) { 1383 case 100: 1384 updateAttachmentThumbnail(attachmentId); 1385 doFinishLoadAttachment(attachmentId); 1386 break; 1387 default: 1388 // do nothing - we don't have a progress bar at this time 1389 break; 1390 } 1391 } else { 1392 AttachmentInfo attachment = findAttachmentInfo(attachmentId); 1393 attachment.cancelButton.setVisibility(View.GONE); 1394 attachment.loadButton.setVisibility(View.VISIBLE); 1395 attachment.progressView.setVisibility(View.INVISIBLE); 1396 if (result.getCause() instanceof IOException) { 1397 Utility.showToast(getActivity(), R.string.status_network_error); 1398 } else { 1399 Utility.showToast(getActivity(), String.format( 1400 mContext.getString( 1401 R.string.message_view_load_attachment_failed_toast), 1402 attachment.name)); 1403 } 1404 } 1405 } 1406 } 1407 1408 private void showAttachmentProgress(long attachmentId, int progress) { 1409 AttachmentInfo attachment = findAttachmentInfo(attachmentId); 1410 if (attachment != null) { 1411 ProgressBar bar = attachment.progressView; 1412 if (progress == 0) { 1413 // When the download starts, we can get rid of the indeterminate bar 1414 bar.setVisibility(View.VISIBLE); 1415 bar.setIndeterminate(false); 1416 // And we're not implementing stop of in-progress downloads 1417 attachment.cancelButton.setVisibility(View.GONE); 1418 } 1419 bar.setProgress(progress); 1420 } 1421 } 1422 } 1423 1424 /** 1425 * Class to detect update on the current message (e.g. toggle star). When it gets content 1426 * change notifications, it kicks {@link ReloadMessageTask}. 1427 * 1428 * TODO Use the new Throttle class. 1429 */ 1430 private class MessageObserver extends ContentObserver implements Runnable { 1431 private final Throttle mThrottle; 1432 private final ContentResolver mContentResolver; 1433 1434 private boolean mRegistered; 1435 1436 public MessageObserver(Handler handler, Context context) { 1437 super(handler); 1438 mContentResolver = context.getContentResolver(); 1439 mThrottle = new Throttle("MessageObserver", this, handler); 1440 } 1441 1442 public void unregister() { 1443 if (!mRegistered) { 1444 return; 1445 } 1446 mThrottle.cancelScheduledCallback(); 1447 mContentResolver.unregisterContentObserver(this); 1448 mRegistered = false; 1449 } 1450 1451 public void register(Uri notifyUri) { 1452 unregister(); 1453 mContentResolver.registerContentObserver(notifyUri, true, this); 1454 mRegistered = true; 1455 } 1456 1457 @Override 1458 public boolean deliverSelfNotifications() { 1459 return true; 1460 } 1461 1462 @Override 1463 public void onChange(boolean selfChange) { 1464 mThrottle.onEvent(); 1465 } 1466 1467 /** 1468 * This method is delay-called by {@link Throttle} on the UI thread. Need to make 1469 * sure if the fragment is still valid. (i.e. don't reload if clearContent() has been 1470 * called.) 1471 */ 1472 @Override 1473 public void run() { 1474 if (!isMessageSpecified()) { 1475 return; 1476 } 1477 Utility.cancelTaskInterrupt(mReloadMessageTask); 1478 mReloadMessageTask = new ReloadMessageTask(); 1479 mReloadMessageTask.execute(); 1480 } 1481 } 1482 1483 public boolean isMessageLoadedForTest() { 1484 return mIsMessageLoadedForTest; 1485 } 1486 1487 public void clearIsMessageLoadedForTest() { 1488 mIsMessageLoadedForTest = true; 1489 } 1490} 1491