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// Copyright 2013 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 "chrome/browser/android/omnibox/omnibox_prerender.h"
#include "base/android/jni_string.h"
#include "base/logging.h"
#include "chrome/browser/android/tab_android.h"
#include "chrome/browser/predictors/autocomplete_action_predictor.h"
#include "chrome/browser/predictors/autocomplete_action_predictor_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_android.h"
#include "chrome/browser/ui/search/instant_search_prerenderer.h"
#include "components/omnibox/autocomplete_match.h"
#include "components/omnibox/autocomplete_result.h"
#include "content/public/browser/web_contents.h"
#include "jni/OmniboxPrerender_jni.h"
#include "url/gurl.h"
using predictors::AutocompleteActionPredictor;
using predictors::AutocompleteActionPredictorFactory;
OmniboxPrerender::OmniboxPrerender(JNIEnv* env, jobject obj)
: weak_java_omnibox_(env, obj) {
}
OmniboxPrerender::~OmniboxPrerender() {
}
static jlong Init(JNIEnv* env, jobject obj) {
OmniboxPrerender* omnibox = new OmniboxPrerender(env, obj);
return reinterpret_cast<intptr_t>(omnibox);
}
bool RegisterOmniboxPrerender(JNIEnv* env) {
return RegisterNativesImpl(env);
}
void OmniboxPrerender::Clear(JNIEnv* env,
jobject obj,
jobject j_profile_android) {
Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile_android);
DCHECK(profile);
if (!profile)
return;
AutocompleteActionPredictor* action_predictor =
AutocompleteActionPredictorFactory::GetForProfile(profile);
action_predictor->ClearTransitionalMatches();
action_predictor->CancelPrerender();
}
void OmniboxPrerender::InitializeForProfile(
JNIEnv* env,
jobject obj,
jobject j_profile_android) {
Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile_android);
// Initialize the AutocompleteActionPredictor for this profile.
// It needs to register for notifications as part of its initialization.
AutocompleteActionPredictorFactory::GetForProfile(profile);
}
void OmniboxPrerender::PrerenderMaybe(JNIEnv* env,
jobject obj,
jstring j_url,
jstring j_current_url,
jlong jsource_match,
jobject j_profile_android,
jobject j_tab) {
AutocompleteResult* autocomplete_result =
reinterpret_cast<AutocompleteResult*>(jsource_match);
Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile_android);
base::string16 url_string =
base::android::ConvertJavaStringToUTF16(env, j_url);
base::string16 current_url_string =
base::android::ConvertJavaStringToUTF16(env, j_current_url);
content::WebContents* web_contents =
TabAndroid::GetNativeTab(env, j_tab)->web_contents();
// TODO(apiccion) Use a delegate for communicating with web_contents.
// This can happen in OmniboxTests since the results are generated
// in Java only.
if (!autocomplete_result)
return;
if (!profile)
return;
const AutocompleteResult::const_iterator default_match(
autocomplete_result->default_match());
if (default_match == autocomplete_result->end())
return;
AutocompleteActionPredictor::Action recommended_action =
AutocompleteActionPredictor::ACTION_NONE;
InstantSearchPrerenderer* prerenderer =
InstantSearchPrerenderer::GetForProfile(profile);
if (prerenderer &&
prerenderer->IsAllowed(*default_match, web_contents)) {
recommended_action = AutocompleteActionPredictor::ACTION_PRERENDER;
} else {
AutocompleteActionPredictor* action_predictor =
AutocompleteActionPredictorFactory::GetForProfile(profile);
if (!action_predictor)
return;
if (action_predictor) {
action_predictor->
RegisterTransitionalMatches(url_string, *autocomplete_result);
recommended_action =
action_predictor->RecommendAction(url_string, *default_match);
}
}
GURL current_url = GURL(current_url_string);
switch (recommended_action) {
case AutocompleteActionPredictor::ACTION_PRERENDER:
// Ask for prerendering if the destination URL is different than the
// current URL.
if (default_match->destination_url != current_url) {
DoPrerender(
*default_match,
profile,
web_contents);
}
break;
case AutocompleteActionPredictor::ACTION_PRECONNECT:
// TODO (apiccion) add preconnect logic
break;
case AutocompleteActionPredictor::ACTION_NONE:
break;
default:
NOTREACHED();
break;
}
}
void OmniboxPrerender::DoPrerender(const AutocompleteMatch& match,
Profile* profile,
content::WebContents* web_contents) {
DCHECK(profile);
if (!profile)
return;
DCHECK(web_contents);
if (!web_contents)
return;
gfx::Rect container_bounds = web_contents->GetContainerBounds();
InstantSearchPrerenderer* prerenderer =
InstantSearchPrerenderer::GetForProfile(profile);
if (prerenderer && prerenderer->IsAllowed(match, web_contents)) {
prerenderer->Init(
web_contents->GetController().GetDefaultSessionStorageNamespace(),
container_bounds.size());
return;
}
predictors::AutocompleteActionPredictorFactory::GetForProfile(profile)->
StartPrerendering(
match.destination_url,
web_contents->GetController().GetDefaultSessionStorageNamespace(),
container_bounds.size());
}
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