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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/webshare/navigator_share.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/navigator.h"
#include "third_party/blink/renderer/modules/webshare/share_data.h"
#include "third_party/blink/renderer/platform/bindings/v8_throw_exception.h"
#include "third_party/blink/renderer/platform/mojo/mojo_helper.h"
namespace blink {
namespace {
// Gets the human-friendly error message for a ShareError. |error| must not be
// ShareError::OK.
String ErrorToString(mojom::blink::ShareError error) {
switch (error) {
case mojom::blink::ShareError::OK:
NOTREACHED();
break;
case mojom::blink::ShareError::INTERNAL_ERROR:
return "Share failed";
case mojom::blink::ShareError::CANCELED:
return "Share canceled";
}
NOTREACHED();
return String();
}
} // namespace
class NavigatorShare::ShareClientImpl final
: public GarbageCollected<ShareClientImpl> {
public:
ShareClientImpl(NavigatorShare*, ScriptPromiseResolver*);
void Callback(mojom::blink::ShareError);
void OnConnectionError();
void Trace(blink::Visitor* visitor) {
visitor->Trace(navigator_);
visitor->Trace(resolver_);
}
private:
WeakMember<NavigatorShare> navigator_;
Member<ScriptPromiseResolver> resolver_;
};
NavigatorShare::ShareClientImpl::ShareClientImpl(
NavigatorShare* navigator_share,
ScriptPromiseResolver* resolver)
: navigator_(navigator_share), resolver_(resolver) {}
void NavigatorShare::ShareClientImpl::Callback(mojom::blink::ShareError error) {
if (navigator_)
navigator_->clients_.erase(this);
if (error == mojom::blink::ShareError::OK) {
resolver_->Resolve();
} else {
resolver_->Reject(DOMException::Create(DOMExceptionCode::kAbortError,
ErrorToString(error)));
}
}
void NavigatorShare::ShareClientImpl::OnConnectionError() {
resolver_->Reject(DOMException::Create(
DOMExceptionCode::kAbortError,
"Internal error: could not connect to Web Share interface."));
}
NavigatorShare::~NavigatorShare() = default;
NavigatorShare& NavigatorShare::From(Navigator& navigator) {
NavigatorShare* supplement =
Supplement<Navigator>::From<NavigatorShare>(navigator);
if (!supplement) {
supplement = new NavigatorShare();
ProvideTo(navigator, supplement);
}
return *supplement;
}
void NavigatorShare::Trace(blink::Visitor* visitor) {
visitor->Trace(clients_);
Supplement<Navigator>::Trace(visitor);
}
NavigatorShare::NavigatorShare() = default;
const char NavigatorShare::kSupplementName[] = "NavigatorShare";
ScriptPromise NavigatorShare::share(ScriptState* script_state,
const ShareData& share_data) {
Document* doc = ToDocument(ExecutionContext::From(script_state));
DCHECK(doc);
if (!share_data.hasTitle() && !share_data.hasText() && !share_data.hasURL()) {
v8::Local<v8::Value> error = V8ThrowException::CreateTypeError(
script_state->GetIsolate(),
"No known share data fields supplied. If using only new fields (other "
"than title, text and url), you must feature-detect them first.");
return ScriptPromise::Reject(script_state, error);
}
KURL full_url = doc->CompleteURL(share_data.url());
if (!full_url.IsNull() && !full_url.IsValid()) {
v8::Local<v8::Value> error = V8ThrowException::CreateTypeError(
script_state->GetIsolate(), "Invalid URL");
return ScriptPromise::Reject(script_state, error);
}
if (!Frame::HasTransientUserActivation(doc ? doc->GetFrame() : nullptr)) {
DOMException* error = DOMException::Create(
DOMExceptionCode::kNotAllowedError,
"Must be handling a user gesture to perform a share request.");
return ScriptPromise::RejectWithDOMException(script_state, error);
}
if (!service_) {
LocalFrame* frame = doc->GetFrame();
if (!frame) {
DOMException* error =
DOMException::Create(DOMExceptionCode::kAbortError,
"Internal error: document frame is missing (the "
"navigator may be detached).");
return ScriptPromise::RejectWithDOMException(script_state, error);
}
frame->GetInterfaceProvider().GetInterface(mojo::MakeRequest(&service_));
service_.set_connection_error_handler(WTF::Bind(
&NavigatorShare::OnConnectionError, WrapWeakPersistent(this)));
DCHECK(service_);
}
ScriptPromiseResolver* resolver = ScriptPromiseResolver::Create(script_state);
ShareClientImpl* client = new ShareClientImpl(this, resolver);
clients_.insert(client);
ScriptPromise promise = resolver->Promise();
service_->Share(
share_data.hasTitle() ? share_data.title() : g_empty_string,
share_data.hasText() ? share_data.text() : g_empty_string, full_url,
WTF::Bind(&ShareClientImpl::Callback, WrapPersistent(client)));
return promise;
}
ScriptPromise NavigatorShare::share(ScriptState* script_state,
Navigator& navigator,
const ShareData& share_data) {
return From(navigator).share(script_state, share_data);
}
void NavigatorShare::OnConnectionError() {
for (auto& client : clients_) {
client->OnConnectionError();
}
clients_.clear();
service_.reset();
}
} // namespace blink
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