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 "chrome/browser/android/logo_bridge.h"
6
7 #include <jni.h>
8
9 #include "base/android/jni_android.h"
10 #include "base/android/jni_string.h"
11 #include "base/android/scoped_java_ref.h"
12 #include "base/bind.h"
13 #include "chrome/browser/android/logo_service.h"
14 #include "chrome/browser/profiles/profile.h"
15 #include "chrome/browser/profiles/profile_android.h"
16 #include "components/search_provider_logos/logo_tracker.h"
17 #include "jni/LogoBridge_jni.h"
18 #include "third_party/skia/include/core/SkBitmap.h"
19 #include "ui/gfx/android/java_bitmap.h"
20
21 using base::android::ScopedJavaLocalRef;
22 using base::android::ConvertUTF8ToJavaString;
23
24 namespace {
25
26 // Converts a C++ Logo to a Java Logo.
ConvertLogoToJavaObject(JNIEnv * env,const search_provider_logos::Logo * logo)27 ScopedJavaLocalRef<jobject> ConvertLogoToJavaObject(
28 JNIEnv* env,
29 const search_provider_logos::Logo* logo) {
30 if (!logo)
31 return ScopedJavaLocalRef<jobject>();
32
33 ScopedJavaLocalRef<jobject> j_bitmap = gfx::ConvertToJavaBitmap(&logo->image);
34
35 ScopedJavaLocalRef<jstring> j_on_click_url;
36 if (!logo->metadata.on_click_url.empty())
37 j_on_click_url = ConvertUTF8ToJavaString(env, logo->metadata.on_click_url);
38
39 ScopedJavaLocalRef<jstring> j_alt_text;
40 if (!logo->metadata.alt_text.empty())
41 j_alt_text = ConvertUTF8ToJavaString(env, logo->metadata.alt_text);
42
43 return Java_LogoBridge_createLogo(
44 env, j_bitmap.obj(), j_on_click_url.obj(), j_alt_text.obj());
45 }
46
47 class LogoObserverAndroid : public search_provider_logos::LogoObserver {
48 public:
LogoObserverAndroid(base::WeakPtr<LogoBridge> logo_bridge,JNIEnv * env,jobject j_logo_observer)49 LogoObserverAndroid(base::WeakPtr<LogoBridge> logo_bridge,
50 JNIEnv* env,
51 jobject j_logo_observer)
52 : logo_bridge_(logo_bridge) {
53 j_logo_observer_.Reset(env, j_logo_observer);
54 }
55
~LogoObserverAndroid()56 virtual ~LogoObserverAndroid() {}
57
58 // seach_provider_logos::LogoObserver:
OnLogoAvailable(const search_provider_logos::Logo * logo,bool from_cache)59 virtual void OnLogoAvailable(const search_provider_logos::Logo* logo,
60 bool from_cache) OVERRIDE {
61 if (!logo_bridge_)
62 return;
63
64 JNIEnv* env = base::android::AttachCurrentThread();
65 ScopedJavaLocalRef<jobject> j_logo = ConvertLogoToJavaObject(env, logo);
66 Java_LogoObserver_onLogoAvailable(
67 env, j_logo_observer_.obj(), j_logo.obj(), from_cache);
68 }
69
OnObserverRemoved()70 virtual void OnObserverRemoved() OVERRIDE {
71 delete this;
72 }
73
74 private:
75 // The associated LogoBridge. We won't call back to Java if the LogoBridge has
76 // been destroyed.
77 base::WeakPtr<LogoBridge> logo_bridge_;
78
79 base::android::ScopedJavaGlobalRef<jobject> j_logo_observer_;
80 };
81
82 } // namespace
83
Init(JNIEnv * env,jobject obj,jobject j_profile)84 static jlong Init(JNIEnv* env, jobject obj, jobject j_profile) {
85 LogoBridge* logo_bridge = new LogoBridge(j_profile);
86 return reinterpret_cast<intptr_t>(logo_bridge);
87 }
88
LogoBridge(jobject j_profile)89 LogoBridge::LogoBridge(jobject j_profile) : weak_ptr_factory_(this) {
90 Profile* profile = ProfileAndroid::FromProfileAndroid(j_profile);
91 if (profile)
92 logo_service_ = LogoServiceFactory::GetForProfile(profile);
93 }
94
~LogoBridge()95 LogoBridge::~LogoBridge() {}
96
Destroy(JNIEnv * env,jobject obj)97 void LogoBridge::Destroy(JNIEnv* env, jobject obj) {
98 delete this;
99 }
100
GetCurrentLogo(JNIEnv * env,jobject obj,jobject j_logo_observer)101 void LogoBridge::GetCurrentLogo(JNIEnv* env,
102 jobject obj,
103 jobject j_logo_observer) {
104 if (!logo_service_)
105 return;
106
107 // |observer| is deleted in LogoObserverAndroid::OnObserverRemoved().
108 LogoObserverAndroid* observer = new LogoObserverAndroid(
109 weak_ptr_factory_.GetWeakPtr(), env, j_logo_observer);
110 logo_service_->GetLogo(observer);
111 }
112
113 // static
RegisterLogoBridge(JNIEnv * env)114 bool RegisterLogoBridge(JNIEnv* env) {
115 return RegisterNativesImpl(env);
116 }
117