Observer Support for DistilledPagePrefs

components/dom_distiller/core/distilled_page_prefs_android.cc

Index: components/dom_distiller/core/distilled_page_prefs_android.cc
diff --git a/components/dom_distiller/core/distilled_page_prefs_android.cc b/components/dom_distiller/core/distilled_page_prefs_android.cc
index a4edfbd690516145a0f87b2022e57c9c06627dc3..e6fb247376cc241fd7e981b7ff9e90e352ad0fd7 100644
--- a/components/dom_distiller/core/distilled_page_prefs_android.cc
+++ b/components/dom_distiller/core/distilled_page_prefs_android.cc
@@ -9,13 +9,14 @@
 #include "jni/DistilledPagePrefs_jni.h"
 
 namespace dom_distiller {
+
 namespace android {
 
 DistilledPagePrefsAndroid::DistilledPagePrefsAndroid(
     JNIEnv* env,
     jobject obj,
-    DistilledPagePrefs* distillerPagePrefsPtr)
-    : distilled_page_prefs_(distillerPagePrefsPtr) {
+    DistilledPagePrefs* distilled_page_prefs_ptr)
+    : distilled_page_prefs_(distilled_page_prefs_ptr) {
 }
 
 DistilledPagePrefsAndroid::~DistilledPagePrefsAndroid() {
@@ -29,11 +30,11 @@ jint DistilledPagePrefsAndroid::GetTheme(JNIEnv* env, jobject obj) {
   return (int)distilled_page_prefs_->GetTheme();
 }
 
-jlong Init(JNIEnv* env, jobject obj, jlong distilledPagePrefsPtr) {
-  DistilledPagePrefs* distilledPagePrefs =
-      reinterpret_cast<DistilledPagePrefs*>(distilledPagePrefsPtr);
+jlong Init(JNIEnv* env, jobject obj, jlong distilled_page_prefs_ptr) {
+  DistilledPagePrefs* distilled_page_prefs =
+      reinterpret_cast<DistilledPagePrefs*>(distilled_page_prefs_ptr);
   DistilledPagePrefsAndroid* distilled_page_prefs_android =
-      new DistilledPagePrefsAndroid(env, obj, distilledPagePrefs);
+      new DistilledPagePrefsAndroid(env, obj, distilled_page_prefs);
   return reinterpret_cast<intptr_t>(distilled_page_prefs_android);
 }
 
@@ -41,5 +42,48 @@ bool DistilledPagePrefsAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
+void DistilledPagePrefsAndroid::AddObserver(JNIEnv* env,
+                                            jobject obj,
+                                            jlong observer_ptr) {
+  DistilledPagePrefsObserverAndroid* distilled_page_prefs_observer_wrapper =
+      reinterpret_cast<DistilledPagePrefsObserverAndroid*>(observer_ptr);
+  distilled_page_prefs_->AddObserver(distilled_page_prefs_observer_wrapper);
+}
+
+void DistilledPagePrefsAndroid::RemoveObserver(JNIEnv* env,
+                                               jobject obj,
+                                               jlong observer_ptr) {
+  DistilledPagePrefsObserverAndroid* distilled_page_prefs_observer_wrapper =
+      reinterpret_cast<DistilledPagePrefsObserverAndroid*>(observer_ptr);
+  distilled_page_prefs_->RemoveObserver(distilled_page_prefs_observer_wrapper);
+}
+
+DistilledPagePrefsObserverAndroid::DistilledPagePrefsObserverAndroid(
+    JNIEnv* env,
+    jobject obj) {
+  java_ref_.Reset(env, obj);
+}
+
+DistilledPagePrefsObserverAndroid::~DistilledPagePrefsObserverAndroid() {}
+
+void DistilledPagePrefsObserverAndroid::DestroyObserverAndroid(JNIEnv* env,
+                                                               jobject obj) {
+  delete this;
+}
+
+void DistilledPagePrefsObserverAndroid::OnChangeTheme(
+    DistilledPagePrefs::Theme new_theme) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_DistilledPagePrefsObserverWrapper_onChangeTheme(
+      env, java_ref_.obj(), (int)new_theme);
+}
+
+jlong InitObserverAndroid(JNIEnv* env, jobject obj) {
+  DistilledPagePrefsObserverAndroid* observer_android =
+      new DistilledPagePrefsObserverAndroid(env, obj);
+  return reinterpret_cast<intptr_t>(observer_android);
+}
+
 }  // namespace android
+
 }  // namespace dom_distiller