Implementing geolocation for the Android Webview

android_webview/native/aw_contents.cc

 // Copyright (c) 2012 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 "android_webview/native/aw_contents.h"
 
 #include <android/bitmap.h>
 #include <sys/system_properties.h>
 
 #include "android_webview/browser/aw_browser_context.h"
@@ skipping 197 matching lines @@
   SetWebContents(reinterpret_cast<content::WebContents*>(new_wc));
 }
 
 AwContents::~AwContents() {
   DCHECK(AwContents::FromWebContents(web_contents_.get()) == this);
   web_contents_->RemoveUserData(kAwContentsUserDataKey);
   if (find_helper_.get())
     find_helper_->SetListener(NULL);
   if (icon_helper_.get())
     icon_helper_->SetListener(NULL);
+  geolocation_callbacks_.clear();
 }
 
 void AwContents::DrawGL(AwDrawGLInfo* draw_info) {
 
   TRACE_EVENT0("AwContents", "AwContents::DrawGL");
 
   if (view_size_.IsEmpty() || !scissor_clip_layer_ ||
       draw_info->mode == AwDrawGLInfo::kModeProcess)
     return;
 
@@ skipping 476 matching lines @@
                  jobject obj,
                  jobject web_contents_delegate) {
   AwContents* tab = new AwContents(env, obj, web_contents_delegate);
   return reinterpret_cast<jint>(tab);
 }
 
 bool RegisterAwContents(JNIEnv* env) {
   return RegisterNativesImpl(env) >= 0;
 }
 
-void AwContents::OnGeolocationShowPrompt(int render_process_id,
-                                       int render_view_id,
-                                       int bridge_id,
-                                       const GURL& requesting_frame) {
+namespace {
+
+void GeolocationShowPrompt(
+      JavaObjectWeakGlobalRef java_ref, const GURL& origin) {

[benm (inactive), 2013/02/07 17:22:39]

nit: one param per line for function definitions/declarations here and
throughout

[Kristian Monsen, 2013/02/08 00:07:44]

Done.

   JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jstring> j_requesting_frame(
-      ConvertUTF8ToJavaString(env, requesting_frame.spec()));
-  Java_AwContents_onGeolocationPermissionsShowPrompt(env,
-      java_ref_.get(env).obj(), render_process_id, render_view_id, bridge_id,
-      j_requesting_frame.obj());
+  ScopedJavaLocalRef<jstring> j_origin(
+      ConvertUTF8ToJavaString(env,origin.spec()));
+  Java_AwContents_onGeolocationPermissionsShowPrompt(
+      env, java_ref.get(env).obj(), j_origin.obj());
 }
 
-void AwContents::OnGeolocationHidePrompt() {
-  // TODO(kristianm): Implement this
+} // anonymous namespace
+
+void AwContents::OnGeolocationShowPrompt(
+    const GURL& requesting_frame, base::Callback<void(bool)> callback) {
+  const GURL& origin = requesting_frame.GetOrigin();
+  bool show_prompt = geolocation_callbacks_.empty();
+  geolocation_callbacks_.push_back(OriginCallback(origin, callback));
+  if (show_prompt) {
+    GeolocationShowPrompt(java_ref_, origin);
+  }
+}
+
+void AwContents::InvokeGeolocationCallback(
+    JNIEnv* env, jobject obj, jboolean value, jstring origin) {
+  GURL callback_origin(base::android::ConvertJavaStringToUTF16(env, origin));
+  if (callback_origin.GetOrigin() == geolocation_callbacks_.front().first) {
+    geolocation_callbacks_.front().second.Run(value);
+    geolocation_callbacks_.pop_front();
+    if (!geolocation_callbacks_.empty()) {
+      GeolocationShowPrompt(java_ref_, geolocation_callbacks_.front().first);
+    }
+  }
+}
+
+void AwContents::OnGeolocationHidePrompt(const GURL& origin) {
+  std::list<OriginCallback>::iterator it = geolocation_callbacks_.begin();
+  bool removed_current_outstanding_callback = false;
+  for ( ; it != geolocation_callbacks_.end(); ) {
+    if ((*it).first == origin.GetOrigin()) {
+      it = geolocation_callbacks_.erase(it);
+      if (it == geolocation_callbacks_.begin()) {
+        removed_current_outstanding_callback = true;
+      }
+    } else {
+      it++;
+    }
+  }
+  if (removed_current_outstanding_callback) {
+    JNIEnv* env = AttachCurrentThread();
+    Java_AwContents_onGeolocationPermissionsHidePrompt(
+        env, java_ref_.get(env).obj());
+    if (!geolocation_callbacks_.empty()) {
+      GeolocationShowPrompt(
+          java_ref_, geolocation_callbacks_.front().first);
+    }
+  }
 }
 
 jint AwContents::FindAllSync(JNIEnv* env, jobject obj, jstring search_string) {
   return GetFindHelper()->FindAllSync(
       ConvertJavaStringToUTF16(env, search_string));
 }
 
 void AwContents::FindAllAsync(JNIEnv* env, jobject obj, jstring search_string) {
   GetFindHelper()->FindAllAsync(ConvertJavaStringToUTF16(env, search_string));
 }
@@ skipping 338 matching lines @@
   if (!picture) {
     render_view_host_ext_->CapturePictureSync();
     picture = RendererPictureMap::GetInstance()->GetRendererPicture(
         web_contents_->GetRoutingID());
   }
 
   return picture;
 }
 
 }  // namespace android_webview