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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.
#ifndef CHROME_BROWSER_ANDROID_OMNIBOX_OMNIBOX_PRERENDER_H_
#define CHROME_BROWSER_ANDROID_OMNIBOX_OMNIBOX_PRERENDER_H_
#include "base/android/jni_weak_ref.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string16.h"
class AutocompleteResult;
class ProfielAndroid;
class Profile;
class TabAndroid;
struct AutocompleteMatch;
namespace content {
class WebContents;
}
// This class is responsible for taking the user's omnibox input text,
// AutocompleteResults and navigation actions and then feeding them to the
// AutocompleteActionPredictor. The predictor uses it to update its
// database and returns predictions on what page, if any, to pre-render
// or pre-connect. This class then takes the corresponding action.
class OmniboxPrerender {
public:
OmniboxPrerender(JNIEnv* env, jobject obj);
virtual ~OmniboxPrerender();
// Clears the transitional matches. This should be called when the user
// stops typing into the omnibox (e.g. when navigating away, closing the
// keyboard or changing tabs).
void Clear(JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj,
const base::android::JavaParamRef<jobject>& j_profile_android);
// Initializes the underlying action predictor for a given profile instance.
// This should be called as soon as possible as the predictor must register
// for certain notifications to properly initialize before providing
// predictions and updated its learning database.
void InitializeForProfile(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj,
const base::android::JavaParamRef<jobject>& j_profile_android);
// Potentailly invokes a pre-render or pre-connect given the url typed into
// the omnibox and a corresponding autocomplete result. This should be
// invoked everytime the omnibox changes (e.g. As the user types characters
// this method should be invoked at least once per character).
void PrerenderMaybe(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj,
const base::android::JavaParamRef<jstring>& j_url,
const base::android::JavaParamRef<jstring>& j_current_url,
jlong jsource_match,
const base::android::JavaParamRef<jobject>& j_profile_android,
const base::android::JavaParamRef<jobject>& j_tab);
private:
// Prerenders a given AutocompleteMatch's url.
void DoPrerender(const AutocompleteMatch& match,
Profile* profile,
content::WebContents* web_contents);
JavaObjectWeakGlobalRef weak_java_omnibox_;
DISALLOW_COPY_AND_ASSIGN(OmniboxPrerender);
};
bool RegisterOmniboxPrerender(JNIEnv* env);
#endif // CHROME_BROWSER_ANDROID_OMNIBOX_OMNIBOX_PRERENDER_H_
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