1 /*
2 * Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2009 Torch Mobile, Inc.
4 * Copyright 2010, The Android Open Source Project
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "config.h"
29 #include "Geolocation.h"
30
31 #if ENABLE(GEOLOCATION)
32
33 #include "Chrome.h"
34 #include "Frame.h"
35 #include "Page.h"
36 #if PLATFORM(ANDROID)
37 #include "PlatformBridge.h"
38 #endif
39 #include <wtf/CurrentTime.h>
40
41 #if ENABLE(CLIENT_BASED_GEOLOCATION)
42 #include "Coordinates.h"
43 #include "GeolocationController.h"
44 #include "GeolocationError.h"
45 #include "GeolocationPosition.h"
46 #include "PositionError.h"
47 #endif
48
49 namespace WebCore {
50
51 static const char permissionDeniedErrorMessage[] = "User denied Geolocation";
52 static const char failedToStartServiceErrorMessage[] = "Failed to start Geolocation service";
53 static const char framelessDocumentErrorMessage[] = "Geolocation cannot be used in frameless documents";
54
55 static const int firstAvailableWatchId = 1;
56
57 #if ENABLE(CLIENT_BASED_GEOLOCATION)
58
createGeoposition(GeolocationPosition * position)59 static PassRefPtr<Geoposition> createGeoposition(GeolocationPosition* position)
60 {
61 if (!position)
62 return 0;
63
64 RefPtr<Coordinates> coordinates = Coordinates::create(position->latitude(), position->longitude(), position->canProvideAltitude(), position->altitude(),
65 position->accuracy(), position->canProvideAltitudeAccuracy(), position->altitudeAccuracy(),
66 position->canProvideHeading(), position->heading(), position->canProvideSpeed(), position->speed());
67 return Geoposition::create(coordinates.release(), convertSecondsToDOMTimeStamp(position->timestamp()));
68 }
69
createPositionError(GeolocationError * error)70 static PassRefPtr<PositionError> createPositionError(GeolocationError* error)
71 {
72 PositionError::ErrorCode code = PositionError::POSITION_UNAVAILABLE;
73 switch (error->code()) {
74 case GeolocationError::PermissionDenied:
75 code = PositionError::PERMISSION_DENIED;
76 break;
77 case GeolocationError::PositionUnavailable:
78 code = PositionError::POSITION_UNAVAILABLE;
79 break;
80 }
81
82 return PositionError::create(code, error->message());
83 }
84 #endif
85
GeoNotifier(Geolocation * geolocation,PassRefPtr<PositionCallback> successCallback,PassRefPtr<PositionErrorCallback> errorCallback,PassRefPtr<PositionOptions> options)86 Geolocation::GeoNotifier::GeoNotifier(Geolocation* geolocation, PassRefPtr<PositionCallback> successCallback, PassRefPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
87 : m_geolocation(geolocation)
88 , m_successCallback(successCallback)
89 , m_errorCallback(errorCallback)
90 , m_options(options)
91 , m_timer(this, &Geolocation::GeoNotifier::timerFired)
92 , m_useCachedPosition(false)
93 {
94 ASSERT(m_geolocation);
95 ASSERT(m_successCallback);
96 // If no options were supplied from JS, we should have created a default set
97 // of options in JSGeolocationCustom.cpp.
98 ASSERT(m_options);
99 }
100
setFatalError(PassRefPtr<PositionError> error)101 void Geolocation::GeoNotifier::setFatalError(PassRefPtr<PositionError> error)
102 {
103 // If a fatal error has already been set, stick with it. This makes sure that
104 // when permission is denied, this is the error reported, as required by the
105 // spec.
106 if (m_fatalError)
107 return;
108
109 m_fatalError = error;
110 // An existing timer may not have a zero timeout.
111 m_timer.stop();
112 m_timer.startOneShot(0);
113 }
114
setUseCachedPosition()115 void Geolocation::GeoNotifier::setUseCachedPosition()
116 {
117 m_useCachedPosition = true;
118 m_timer.startOneShot(0);
119 }
120
hasZeroTimeout() const121 bool Geolocation::GeoNotifier::hasZeroTimeout() const
122 {
123 return m_options->hasTimeout() && m_options->timeout() == 0;
124 }
125
runSuccessCallback(Geoposition * position)126 void Geolocation::GeoNotifier::runSuccessCallback(Geoposition* position)
127 {
128 m_successCallback->handleEvent(position);
129 }
130
startTimerIfNeeded()131 void Geolocation::GeoNotifier::startTimerIfNeeded()
132 {
133 if (m_options->hasTimeout())
134 m_timer.startOneShot(m_options->timeout() / 1000.0);
135 }
136
timerFired(Timer<GeoNotifier> *)137 void Geolocation::GeoNotifier::timerFired(Timer<GeoNotifier>*)
138 {
139 m_timer.stop();
140
141 // Protect this GeoNotifier object, since it
142 // could be deleted by a call to clearWatch in a callback.
143 RefPtr<GeoNotifier> protect(this);
144
145 // Test for fatal error first. This is required for the case where the Frame is
146 // disconnected and requests are cancelled.
147 if (m_fatalError) {
148 if (m_errorCallback)
149 m_errorCallback->handleEvent(m_fatalError.get());
150 // This will cause this notifier to be deleted.
151 m_geolocation->fatalErrorOccurred(this);
152 return;
153 }
154
155 if (m_useCachedPosition) {
156 // Clear the cached position flag in case this is a watch request, which
157 // will continue to run.
158 m_useCachedPosition = false;
159 m_geolocation->requestUsesCachedPosition(this);
160 return;
161 }
162
163 if (m_errorCallback) {
164 RefPtr<PositionError> error = PositionError::create(PositionError::TIMEOUT, "Timeout expired");
165 m_errorCallback->handleEvent(error.get());
166 }
167 m_geolocation->requestTimedOut(this);
168 }
169
set(int id,PassRefPtr<GeoNotifier> prpNotifier)170 void Geolocation::Watchers::set(int id, PassRefPtr<GeoNotifier> prpNotifier)
171 {
172 ASSERT(id > 0);
173 RefPtr<GeoNotifier> notifier = prpNotifier;
174
175 m_idToNotifierMap.set(id, notifier.get());
176 m_notifierToIdMap.set(notifier.release(), id);
177 }
178
remove(int id)179 void Geolocation::Watchers::remove(int id)
180 {
181 ASSERT(id > 0);
182 IdToNotifierMap::iterator iter = m_idToNotifierMap.find(id);
183 if (iter == m_idToNotifierMap.end())
184 return;
185 m_notifierToIdMap.remove(iter->second);
186 m_idToNotifierMap.remove(iter);
187 }
188
remove(GeoNotifier * notifier)189 void Geolocation::Watchers::remove(GeoNotifier* notifier)
190 {
191 NotifierToIdMap::iterator iter = m_notifierToIdMap.find(notifier);
192 if (iter == m_notifierToIdMap.end())
193 return;
194 m_idToNotifierMap.remove(iter->second);
195 m_notifierToIdMap.remove(iter);
196 }
197
contains(GeoNotifier * notifier) const198 bool Geolocation::Watchers::contains(GeoNotifier* notifier) const
199 {
200 return m_notifierToIdMap.contains(notifier);
201 }
202
clear()203 void Geolocation::Watchers::clear()
204 {
205 m_idToNotifierMap.clear();
206 m_notifierToIdMap.clear();
207 }
208
isEmpty() const209 bool Geolocation::Watchers::isEmpty() const
210 {
211 return m_idToNotifierMap.isEmpty();
212 }
213
getNotifiersVector(GeoNotifierVector & copy) const214 void Geolocation::Watchers::getNotifiersVector(GeoNotifierVector& copy) const
215 {
216 copyValuesToVector(m_idToNotifierMap, copy);
217 }
218
Geolocation(Frame * frame)219 Geolocation::Geolocation(Frame* frame)
220 : m_frame(frame)
221 #if !ENABLE(CLIENT_BASED_GEOLOCATION)
222 , m_service(GeolocationService::create(this))
223 #endif
224 , m_allowGeolocation(Unknown)
225 {
226 if (!m_frame)
227 return;
228 ASSERT(m_frame->document());
229 m_frame->document()->setUsingGeolocation(true);
230 }
231
~Geolocation()232 Geolocation::~Geolocation()
233 {
234 ASSERT(m_allowGeolocation != InProgress);
235 ASSERT(!m_frame);
236 }
237
page() const238 Page* Geolocation::page() const
239 {
240 return m_frame ? m_frame->page() : 0;
241 }
242
reset()243 void Geolocation::reset()
244 {
245 Page* page = this->page();
246 if (page && m_allowGeolocation == InProgress) {
247 #if ENABLE(CLIENT_BASED_GEOLOCATION)
248 page->geolocationController()->cancelPermissionRequest(this);
249 #else
250 page->chrome()->cancelGeolocationPermissionRequestForFrame(m_frame, this);
251 #endif
252 }
253 // The frame may be moving to a new page and we want to get the permissions from the new page's client.
254 m_allowGeolocation = Unknown;
255 cancelAllRequests();
256 stopUpdating();
257 }
258
disconnectFrame()259 void Geolocation::disconnectFrame()
260 {
261 // Once we are disconnected from the Frame, it is no longer possible to perform any operations.
262 reset();
263 if (m_frame && m_frame->document())
264 m_frame->document()->setUsingGeolocation(false);
265 m_frame = 0;
266 }
267
lastPosition()268 Geoposition* Geolocation::lastPosition()
269 {
270 #if ENABLE(CLIENT_BASED_GEOLOCATION)
271 Page* page = this->page();
272 if (!page)
273 return 0;
274
275 m_lastPosition = createGeoposition(page->geolocationController()->lastPosition());
276 #else
277 m_lastPosition = m_service->lastPosition();
278 #endif
279
280 return m_lastPosition.get();
281 }
282
getCurrentPosition(PassRefPtr<PositionCallback> successCallback,PassRefPtr<PositionErrorCallback> errorCallback,PassRefPtr<PositionOptions> options)283 void Geolocation::getCurrentPosition(PassRefPtr<PositionCallback> successCallback, PassRefPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
284 {
285 if (!m_frame)
286 return;
287
288 RefPtr<GeoNotifier> notifier = startRequest(successCallback, errorCallback, options);
289 ASSERT(notifier);
290
291 m_oneShots.add(notifier);
292 }
293
watchPosition(PassRefPtr<PositionCallback> successCallback,PassRefPtr<PositionErrorCallback> errorCallback,PassRefPtr<PositionOptions> options)294 int Geolocation::watchPosition(PassRefPtr<PositionCallback> successCallback, PassRefPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
295 {
296 if (!m_frame)
297 return 0;
298
299 RefPtr<GeoNotifier> notifier = startRequest(successCallback, errorCallback, options);
300 ASSERT(notifier);
301
302 static int nextAvailableWatchId = firstAvailableWatchId;
303 // In case of overflow, make sure the ID remains positive, but reuse the ID values.
304 if (nextAvailableWatchId < 1)
305 nextAvailableWatchId = 1;
306 m_watchers.set(nextAvailableWatchId, notifier.release());
307 return nextAvailableWatchId++;
308 }
309
startRequest(PassRefPtr<PositionCallback> successCallback,PassRefPtr<PositionErrorCallback> errorCallback,PassRefPtr<PositionOptions> options)310 PassRefPtr<Geolocation::GeoNotifier> Geolocation::startRequest(PassRefPtr<PositionCallback> successCallback, PassRefPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
311 {
312 RefPtr<GeoNotifier> notifier = GeoNotifier::create(this, successCallback, errorCallback, options);
313
314 // Check whether permissions have already been denied. Note that if this is the case,
315 // the permission state can not change again in the lifetime of this page.
316 if (isDenied())
317 notifier->setFatalError(PositionError::create(PositionError::PERMISSION_DENIED, permissionDeniedErrorMessage));
318 else if (haveSuitableCachedPosition(notifier->m_options.get()))
319 notifier->setUseCachedPosition();
320 else if (notifier->hasZeroTimeout())
321 notifier->startTimerIfNeeded();
322 #if USE(PREEMPT_GEOLOCATION_PERMISSION)
323 else if (!isAllowed()) {
324 // if we don't yet have permission, request for permission before calling startUpdating()
325 m_pendingForPermissionNotifiers.add(notifier);
326 requestPermission();
327 }
328 #endif
329 else if (startUpdating(notifier.get()))
330 notifier->startTimerIfNeeded();
331 else
332 notifier->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, failedToStartServiceErrorMessage));
333
334 return notifier.release();
335 }
336
fatalErrorOccurred(Geolocation::GeoNotifier * notifier)337 void Geolocation::fatalErrorOccurred(Geolocation::GeoNotifier* notifier)
338 {
339 // This request has failed fatally. Remove it from our lists.
340 m_oneShots.remove(notifier);
341 m_watchers.remove(notifier);
342
343 if (!hasListeners())
344 stopUpdating();
345 }
346
requestUsesCachedPosition(GeoNotifier * notifier)347 void Geolocation::requestUsesCachedPosition(GeoNotifier* notifier)
348 {
349 // This is called asynchronously, so the permissions could have been denied
350 // since we last checked in startRequest.
351 if (isDenied()) {
352 notifier->setFatalError(PositionError::create(PositionError::PERMISSION_DENIED, permissionDeniedErrorMessage));
353 return;
354 }
355
356 m_requestsAwaitingCachedPosition.add(notifier);
357
358 // If permissions are allowed, make the callback
359 if (isAllowed()) {
360 makeCachedPositionCallbacks();
361 return;
362 }
363
364 // Request permissions, which may be synchronous or asynchronous.
365 requestPermission();
366 }
367
makeCachedPositionCallbacks()368 void Geolocation::makeCachedPositionCallbacks()
369 {
370 // All modifications to m_requestsAwaitingCachedPosition are done
371 // asynchronously, so we don't need to worry about it being modified from
372 // the callbacks.
373 GeoNotifierSet::const_iterator end = m_requestsAwaitingCachedPosition.end();
374 for (GeoNotifierSet::const_iterator iter = m_requestsAwaitingCachedPosition.begin(); iter != end; ++iter) {
375 GeoNotifier* notifier = iter->get();
376 notifier->runSuccessCallback(m_positionCache.cachedPosition());
377
378 // If this is a one-shot request, stop it. Otherwise, if the watch still
379 // exists, start the service to get updates.
380 if (m_oneShots.contains(notifier))
381 m_oneShots.remove(notifier);
382 else if (m_watchers.contains(notifier)) {
383 if (notifier->hasZeroTimeout() || startUpdating(notifier))
384 notifier->startTimerIfNeeded();
385 else
386 notifier->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, failedToStartServiceErrorMessage));
387 }
388 }
389
390 m_requestsAwaitingCachedPosition.clear();
391
392 if (!hasListeners())
393 stopUpdating();
394 }
395
requestTimedOut(GeoNotifier * notifier)396 void Geolocation::requestTimedOut(GeoNotifier* notifier)
397 {
398 // If this is a one-shot request, stop it.
399 m_oneShots.remove(notifier);
400
401 if (!hasListeners())
402 stopUpdating();
403 }
404
haveSuitableCachedPosition(PositionOptions * options)405 bool Geolocation::haveSuitableCachedPosition(PositionOptions* options)
406 {
407 if (!m_positionCache.cachedPosition())
408 return false;
409 if (!options->hasMaximumAge())
410 return true;
411 if (!options->maximumAge())
412 return false;
413 DOMTimeStamp currentTimeMillis = convertSecondsToDOMTimeStamp(currentTime());
414 return m_positionCache.cachedPosition()->timestamp() > currentTimeMillis - options->maximumAge();
415 }
416
clearWatch(int watchId)417 void Geolocation::clearWatch(int watchId)
418 {
419 if (watchId < firstAvailableWatchId)
420 return;
421
422 m_watchers.remove(watchId);
423
424 if (!hasListeners())
425 stopUpdating();
426 }
427
suspend()428 void Geolocation::suspend()
429 {
430 #if !ENABLE(CLIENT_BASED_GEOLOCATION)
431 if (hasListeners())
432 m_service->suspend();
433 #endif
434 }
435
resume()436 void Geolocation::resume()
437 {
438 #if !ENABLE(CLIENT_BASED_GEOLOCATION)
439 if (hasListeners())
440 m_service->resume();
441 #endif
442 }
443
setIsAllowed(bool allowed)444 void Geolocation::setIsAllowed(bool allowed)
445 {
446 // This may be due to either a new position from the service, or a cached
447 // position.
448 m_allowGeolocation = allowed ? Yes : No;
449
450 #if USE(PREEMPT_GEOLOCATION_PERMISSION)
451 // Permission request was made during the startRequest process
452 if (!m_pendingForPermissionNotifiers.isEmpty()) {
453 handlePendingPermissionNotifiers();
454 m_pendingForPermissionNotifiers.clear();
455 return;
456 }
457 #endif
458
459 if (!isAllowed()) {
460 RefPtr<PositionError> error = PositionError::create(PositionError::PERMISSION_DENIED, permissionDeniedErrorMessage);
461 error->setIsFatal(true);
462 handleError(error.get());
463 m_requestsAwaitingCachedPosition.clear();
464 return;
465 }
466
467 // If the service has a last position, use it to call back for all requests.
468 // If any of the requests are waiting for permission for a cached position,
469 // the position from the service will be at least as fresh.
470 if (lastPosition())
471 makeSuccessCallbacks();
472 else
473 makeCachedPositionCallbacks();
474 }
475
sendError(GeoNotifierVector & notifiers,PositionError * error)476 void Geolocation::sendError(GeoNotifierVector& notifiers, PositionError* error)
477 {
478 GeoNotifierVector::const_iterator end = notifiers.end();
479 for (GeoNotifierVector::const_iterator it = notifiers.begin(); it != end; ++it) {
480 RefPtr<GeoNotifier> notifier = *it;
481
482 if (notifier->m_errorCallback)
483 notifier->m_errorCallback->handleEvent(error);
484 }
485 }
486
sendPosition(GeoNotifierVector & notifiers,Geoposition * position)487 void Geolocation::sendPosition(GeoNotifierVector& notifiers, Geoposition* position)
488 {
489 GeoNotifierVector::const_iterator end = notifiers.end();
490 for (GeoNotifierVector::const_iterator it = notifiers.begin(); it != end; ++it) {
491 RefPtr<GeoNotifier> notifier = *it;
492 ASSERT(notifier->m_successCallback);
493
494 notifier->m_successCallback->handleEvent(position);
495 }
496 }
497
stopTimer(GeoNotifierVector & notifiers)498 void Geolocation::stopTimer(GeoNotifierVector& notifiers)
499 {
500 GeoNotifierVector::const_iterator end = notifiers.end();
501 for (GeoNotifierVector::const_iterator it = notifiers.begin(); it != end; ++it) {
502 RefPtr<GeoNotifier> notifier = *it;
503 notifier->m_timer.stop();
504 }
505 }
506
stopTimersForOneShots()507 void Geolocation::stopTimersForOneShots()
508 {
509 GeoNotifierVector copy;
510 copyToVector(m_oneShots, copy);
511
512 stopTimer(copy);
513 }
514
stopTimersForWatchers()515 void Geolocation::stopTimersForWatchers()
516 {
517 GeoNotifierVector copy;
518 m_watchers.getNotifiersVector(copy);
519
520 stopTimer(copy);
521 }
522
stopTimers()523 void Geolocation::stopTimers()
524 {
525 stopTimersForOneShots();
526 stopTimersForWatchers();
527 }
528
cancelRequests(GeoNotifierVector & notifiers)529 void Geolocation::cancelRequests(GeoNotifierVector& notifiers)
530 {
531 GeoNotifierVector::const_iterator end = notifiers.end();
532 for (GeoNotifierVector::const_iterator it = notifiers.begin(); it != end; ++it)
533 (*it)->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, framelessDocumentErrorMessage));
534 }
535
cancelAllRequests()536 void Geolocation::cancelAllRequests()
537 {
538 GeoNotifierVector copy;
539 copyToVector(m_oneShots, copy);
540 cancelRequests(copy);
541 m_watchers.getNotifiersVector(copy);
542 cancelRequests(copy);
543 }
544
extractNotifiersWithCachedPosition(GeoNotifierVector & notifiers,GeoNotifierVector * cached)545 void Geolocation::extractNotifiersWithCachedPosition(GeoNotifierVector& notifiers, GeoNotifierVector* cached)
546 {
547 GeoNotifierVector nonCached;
548 GeoNotifierVector::iterator end = notifiers.end();
549 for (GeoNotifierVector::const_iterator it = notifiers.begin(); it != end; ++it) {
550 GeoNotifier* notifier = it->get();
551 if (notifier->m_useCachedPosition) {
552 if (cached)
553 cached->append(notifier);
554 } else
555 nonCached.append(notifier);
556 }
557 notifiers.swap(nonCached);
558 }
559
copyToSet(const GeoNotifierVector & src,GeoNotifierSet & dest)560 void Geolocation::copyToSet(const GeoNotifierVector& src, GeoNotifierSet& dest)
561 {
562 GeoNotifierVector::const_iterator end = src.end();
563 for (GeoNotifierVector::const_iterator it = src.begin(); it != end; ++it) {
564 GeoNotifier* notifier = it->get();
565 dest.add(notifier);
566 }
567 }
568
handleError(PositionError * error)569 void Geolocation::handleError(PositionError* error)
570 {
571 ASSERT(error);
572
573 GeoNotifierVector oneShotsCopy;
574 copyToVector(m_oneShots, oneShotsCopy);
575
576 GeoNotifierVector watchersCopy;
577 m_watchers.getNotifiersVector(watchersCopy);
578
579 // Clear the lists before we make the callbacks, to avoid clearing notifiers
580 // added by calls to Geolocation methods from the callbacks, and to prevent
581 // further callbacks to these notifiers.
582 GeoNotifierVector oneShotsWithCachedPosition;
583 m_oneShots.clear();
584 if (error->isFatal())
585 m_watchers.clear();
586 else {
587 // Don't send non-fatal errors to notifiers due to receive a cached position.
588 extractNotifiersWithCachedPosition(oneShotsCopy, &oneShotsWithCachedPosition);
589 extractNotifiersWithCachedPosition(watchersCopy, 0);
590 }
591
592 sendError(oneShotsCopy, error);
593 sendError(watchersCopy, error);
594
595 // hasListeners() doesn't distinguish between notifiers due to receive a
596 // cached position and those requiring a fresh position. Perform the check
597 // before restoring the notifiers below.
598 if (!hasListeners())
599 stopUpdating();
600
601 // Maintain a reference to the cached notifiers until their timer fires.
602 copyToSet(oneShotsWithCachedPosition, m_oneShots);
603 }
604
requestPermission()605 void Geolocation::requestPermission()
606 {
607 if (m_allowGeolocation > Unknown)
608 return;
609
610 Page* page = this->page();
611 if (!page)
612 return;
613
614 m_allowGeolocation = InProgress;
615
616 // Ask the embedder: it maintains the geolocation challenge policy itself.
617 #if ENABLE(CLIENT_BASED_GEOLOCATION)
618 page->geolocationController()->requestPermission(this);
619 #else
620 page->chrome()->requestGeolocationPermissionForFrame(m_frame, this);
621 #endif
622 }
623
positionChangedInternal()624 void Geolocation::positionChangedInternal()
625 {
626 m_positionCache.setCachedPosition(lastPosition());
627
628 // Stop all currently running timers.
629 stopTimers();
630
631 if (!isAllowed()) {
632 // requestPermission() will ask the chrome for permission. This may be
633 // implemented synchronously or asynchronously. In both cases,
634 // makeSuccessCallbacks() will be called if permission is granted, so
635 // there's nothing more to do here.
636 requestPermission();
637 return;
638 }
639
640 makeSuccessCallbacks();
641 }
642
makeSuccessCallbacks()643 void Geolocation::makeSuccessCallbacks()
644 {
645 ASSERT(lastPosition());
646 ASSERT(isAllowed());
647
648 GeoNotifierVector oneShotsCopy;
649 copyToVector(m_oneShots, oneShotsCopy);
650
651 GeoNotifierVector watchersCopy;
652 m_watchers.getNotifiersVector(watchersCopy);
653
654 // Clear the lists before we make the callbacks, to avoid clearing notifiers
655 // added by calls to Geolocation methods from the callbacks, and to prevent
656 // further callbacks to these notifiers.
657 m_oneShots.clear();
658
659 sendPosition(oneShotsCopy, lastPosition());
660 sendPosition(watchersCopy, lastPosition());
661
662 if (!hasListeners())
663 stopUpdating();
664 }
665
666 #if ENABLE(CLIENT_BASED_GEOLOCATION)
667
positionChanged()668 void Geolocation::positionChanged()
669 {
670 positionChangedInternal();
671 }
672
setError(GeolocationError * error)673 void Geolocation::setError(GeolocationError* error)
674 {
675 RefPtr<PositionError> positionError = createPositionError(error);
676 handleError(positionError.get());
677 }
678
679 #else
680
geolocationServicePositionChanged(GeolocationService * service)681 void Geolocation::geolocationServicePositionChanged(GeolocationService* service)
682 {
683 ASSERT_UNUSED(service, service == m_service);
684 ASSERT(m_service->lastPosition());
685
686 positionChangedInternal();
687 }
688
geolocationServiceErrorOccurred(GeolocationService * service)689 void Geolocation::geolocationServiceErrorOccurred(GeolocationService* service)
690 {
691 ASSERT(service->lastError());
692
693 // Note that we do not stop timers here. For one-shots, the request is
694 // cleared in handleError. For watchers, the spec requires that the timer is
695 // not cleared.
696 handleError(service->lastError());
697 }
698
699 #endif
700
startUpdating(GeoNotifier * notifier)701 bool Geolocation::startUpdating(GeoNotifier* notifier)
702 {
703 #if ENABLE(CLIENT_BASED_GEOLOCATION)
704 Page* page = this->page();
705 if (!page)
706 return false;
707
708 page->geolocationController()->addObserver(this, notifier->m_options->enableHighAccuracy());
709 return true;
710 #else
711 return m_service->startUpdating(notifier->m_options.get());
712 #endif
713 }
714
stopUpdating()715 void Geolocation::stopUpdating()
716 {
717 #if ENABLE(CLIENT_BASED_GEOLOCATION)
718 Page* page = this->page();
719 if (!page)
720 return;
721
722 page->geolocationController()->removeObserver(this);
723 #else
724 m_service->stopUpdating();
725 #endif
726
727 }
728
729 #if USE(PREEMPT_GEOLOCATION_PERMISSION)
handlePendingPermissionNotifiers()730 void Geolocation::handlePendingPermissionNotifiers()
731 {
732 // While we iterate through the list, we need not worry about list being modified as the permission
733 // is already set to Yes/No and no new listeners will be added to the pending list
734 GeoNotifierSet::const_iterator end = m_pendingForPermissionNotifiers.end();
735 for (GeoNotifierSet::const_iterator iter = m_pendingForPermissionNotifiers.begin(); iter != end; ++iter) {
736 GeoNotifier* notifier = iter->get();
737
738 if (isAllowed()) {
739 // start all pending notification requests as permission granted.
740 // The notifier is always ref'ed by m_oneShots or m_watchers.
741 if (startUpdating(notifier))
742 notifier->startTimerIfNeeded();
743 else
744 notifier->setFatalError(PositionError::create(PositionError::POSITION_UNAVAILABLE, failedToStartServiceErrorMessage));
745 } else
746 notifier->setFatalError(PositionError::create(PositionError::PERMISSION_DENIED, permissionDeniedErrorMessage));
747 }
748 }
749 #endif
750
751 } // namespace WebCore
752
753 #else
754
755 namespace WebCore {
756
clearWatch(int)757 void Geolocation::clearWatch(int) {}
758
reset()759 void Geolocation::reset() {}
760
disconnectFrame()761 void Geolocation::disconnectFrame() {}
762
Geolocation(Frame *)763 Geolocation::Geolocation(Frame*) {}
764
~Geolocation()765 Geolocation::~Geolocation() {}
766
setIsAllowed(bool)767 void Geolocation::setIsAllowed(bool) {}
768
769 }
770
771 #endif // ENABLE(GEOLOCATION)
772