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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "content/browser/service_worker/service_worker_unregister_job.h"
      6 
      7 #include "base/memory/weak_ptr.h"
      8 #include "content/browser/service_worker/service_worker_context_core.h"
      9 #include "content/browser/service_worker/service_worker_job_coordinator.h"
     10 #include "content/browser/service_worker/service_worker_registration.h"
     11 #include "content/browser/service_worker/service_worker_storage.h"
     12 #include "content/browser/service_worker/service_worker_utils.h"
     13 #include "content/browser/service_worker/service_worker_version.h"
     14 
     15 namespace content {
     16 
     17 typedef ServiceWorkerRegisterJobBase::RegistrationJobType RegistrationJobType;
     18 
     19 ServiceWorkerUnregisterJob::ServiceWorkerUnregisterJob(
     20     base::WeakPtr<ServiceWorkerContextCore> context,
     21     const GURL& pattern)
     22     : context_(context),
     23       pattern_(pattern),
     24       is_promise_resolved_(false),
     25       weak_factory_(this) {
     26 }
     27 
     28 ServiceWorkerUnregisterJob::~ServiceWorkerUnregisterJob() {}
     29 
     30 void ServiceWorkerUnregisterJob::AddCallback(
     31     const UnregistrationCallback& callback) {
     32   callbacks_.push_back(callback);
     33 }
     34 
     35 void ServiceWorkerUnregisterJob::Start() {
     36   context_->storage()->FindRegistrationForPattern(
     37       pattern_,
     38       base::Bind(&ServiceWorkerUnregisterJob::OnRegistrationFound,
     39                  weak_factory_.GetWeakPtr()));
     40 }
     41 
     42 void ServiceWorkerUnregisterJob::Abort() {
     43   CompleteInternal(SERVICE_WORKER_ERROR_ABORT);
     44 }
     45 
     46 bool ServiceWorkerUnregisterJob::Equals(ServiceWorkerRegisterJobBase* job) {
     47   if (job->GetType() != GetType())
     48     return false;
     49   return static_cast<ServiceWorkerUnregisterJob*>(job)->pattern_ == pattern_;
     50 }
     51 
     52 RegistrationJobType ServiceWorkerUnregisterJob::GetType() {
     53   return UNREGISTRATION_JOB;
     54 }
     55 
     56 void ServiceWorkerUnregisterJob::OnRegistrationFound(
     57     ServiceWorkerStatusCode status,
     58     const scoped_refptr<ServiceWorkerRegistration>& registration) {
     59   if (status == SERVICE_WORKER_ERROR_NOT_FOUND) {
     60     DCHECK(!registration.get());
     61     Complete(SERVICE_WORKER_ERROR_NOT_FOUND);
     62     return;
     63   }
     64 
     65   if (status != SERVICE_WORKER_OK || registration->is_uninstalling()) {
     66     Complete(status);
     67     return;
     68   }
     69 
     70   // TODO: "7. If registration.updatePromise is not null..."
     71 
     72   // "8. Resolve promise."
     73   ResolvePromise(SERVICE_WORKER_OK);
     74 
     75   registration->ClearWhenReady();
     76 
     77   Complete(SERVICE_WORKER_OK);
     78 }
     79 
     80 void ServiceWorkerUnregisterJob::Complete(ServiceWorkerStatusCode status) {
     81   CompleteInternal(status);
     82   context_->job_coordinator()->FinishJob(pattern_, this);
     83 }
     84 
     85 void ServiceWorkerUnregisterJob::CompleteInternal(
     86     ServiceWorkerStatusCode status) {
     87   if (!is_promise_resolved_)
     88     ResolvePromise(status);
     89 }
     90 
     91 void ServiceWorkerUnregisterJob::ResolvePromise(
     92     ServiceWorkerStatusCode status) {
     93   DCHECK(!is_promise_resolved_);
     94   is_promise_resolved_ = true;
     95   for (std::vector<UnregistrationCallback>::iterator it = callbacks_.begin();
     96        it != callbacks_.end();
     97        ++it) {
     98     it->Run(status);
     99   }
    100 }
    101 
    102 }  // namespace content
    103