Add history popup when long pressing on the back key.

content/browser/android/content_view_core_impl.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 "content/browser/android/content_view_core_impl.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
@@ skipping 1014 matching lines @@
 
 void ContentViewCoreImpl::GoForward(JNIEnv* env, jobject obj) {
   web_contents_->GetController().GoForward();
   tab_crashed_ = false;
 }
 
 void ContentViewCoreImpl::GoToOffset(JNIEnv* env, jobject obj, jint offset) {
   web_contents_->GetController().GoToOffset(offset);
 }
 
+void ContentViewCoreImpl::GoToNavigationIndex(JNIEnv* env,
+                                              jobject obj,
+                                              jint index) {
+  web_contents_->GetController().GoToIndex(index);
+}
+
 void ContentViewCoreImpl::StopLoading(JNIEnv* env, jobject obj) {
   web_contents_->Stop();
 }
 
 void ContentViewCoreImpl::Reload(JNIEnv* env, jobject obj) {
   // Set check_for_repost parameter to false as we have no repost confirmation
   // dialog ("confirm form resubmission" screen will still appear, however).
   if (web_contents_->GetController().NeedsReload())
     web_contents_->GetController().LoadIfNecessary();
   else
@@ skipping 102 matching lines @@
   return view && view->HasValidFrame();
 }
 
 void ContentViewCoreImpl::ScrollFocusedEditableNodeIntoView(JNIEnv* env,
                                                             jobject obj) {
   RenderViewHost* host = web_contents_->GetRenderViewHost();
   host->Send(new ViewMsg_ScrollFocusedEditableNodeIntoRect(host->GetRoutingID(),
                                                            gfx::Rect()));
 }
 
+namespace {
+
+static void AddNavigationEntryToHistory(JNIEnv* env, jobject obj,
+                                        jobject history,
+                                        NavigationEntry* entry,
+                                        int index) {
+  // Get the details of the current entry
+  ScopedJavaLocalRef<jstring> j_url(
+      ConvertUTF8ToJavaString(env, entry->GetURL().spec()));
+  ScopedJavaLocalRef<jstring> j_virtual_url(
+      ConvertUTF8ToJavaString(env, entry->GetVirtualURL().spec()));
+  ScopedJavaLocalRef<jstring> j_original_url(
+      ConvertUTF8ToJavaString(env, entry->GetOriginalRequestURL().spec()));
+  ScopedJavaLocalRef<jstring> j_title(
+      ConvertUTF16ToJavaString(env, entry->GetTitle()));
+  ScopedJavaLocalRef<jobject> j_bitmap;
+  const FaviconStatus& status = entry->GetFavicon();
+  if (status.valid && status.image.ToSkBitmap()->getSize() > 0)
+    j_bitmap = gfx::ConvertToJavaBitmap(status.image.ToSkBitmap());
+
+  // Add the item to the list
+  Java_ContentViewCore_addToNavigationHistory(
+      env, obj, history, index, j_url.obj(), j_virtual_url.obj(),
+      j_original_url.obj(), j_title.obj(), j_bitmap.obj());
+}
+
+}  // namespace
+
 int ContentViewCoreImpl::GetNavigationHistory(JNIEnv* env,
                                               jobject obj,
                                               jobject context) {
   // Iterate through navigation entries to populate the list
   const NavigationController& controller = web_contents_->GetController();
   int count = controller.GetEntryCount();
   for (int i = 0; i < count; ++i) {
-    NavigationEntry* entry = controller.GetEntryAtIndex(i);
-
-    // Get the details of the current entry
-    ScopedJavaLocalRef<jstring> j_url = ConvertUTF8ToJavaString(env,
-        entry->GetURL().spec());
-    ScopedJavaLocalRef<jstring> j_virtual_url = ConvertUTF8ToJavaString(env,
-        entry->GetVirtualURL().spec());
-    ScopedJavaLocalRef<jstring> j_original_url = ConvertUTF8ToJavaString(env,
-        entry->GetOriginalRequestURL().spec());
-    ScopedJavaLocalRef<jstring> j_title = ConvertUTF16ToJavaString(env,
-        entry->GetTitle());
-    ScopedJavaLocalRef<jobject> j_bitmap;
-    const FaviconStatus& status = entry->GetFavicon();
-    if (status.valid && status.image.ToSkBitmap()->getSize() > 0) {
-      j_bitmap = gfx::ConvertToJavaBitmap(status.image.ToSkBitmap());
-    }
-
-    // Add the item to the list
-    Java_ContentViewCore_addToNavigationHistory(env, obj, context, j_url.obj(),
-        j_virtual_url.obj(), j_original_url.obj(), j_title.obj(),
-        j_bitmap.obj());
+    AddNavigationEntryToHistory(
+        env, obj, context, controller.GetEntryAtIndex(i), i);
   }
 
   return controller.GetCurrentEntryIndex();
 }
 
+void ContentViewCoreImpl::GetDirectedNavigationHistory(JNIEnv* env,
+                                                       jobject obj,
+                                                       jobject context,
+                                                       jboolean is_forward,
+                                                       jint max_entries) {
+  // Iterate through navigation entries to populate the list
+  const NavigationController& controller = web_contents_->GetController();
+  int count = controller.GetEntryCount();
+  int num_added = 0;
+  int increment_value = is_forward ? 1 : -1;
+  for (int i = controller.GetCurrentEntryIndex() + increment_value;
+       i >= 0 && i < count;
+       i += increment_value) {
+    if (num_added >= max_entries)
+      break;
+
+    AddNavigationEntryToHistory(
+        env, obj, context, controller.GetEntryAtIndex(i), i);
+    num_added++;
+  }
+}
+
 int ContentViewCoreImpl::GetNativeImeAdapter(JNIEnv* env, jobject obj) {
   RenderWidgetHostViewAndroid* rwhva = GetRenderWidgetHostViewAndroid();
   if (!rwhva)
     return 0;
   return rwhva->GetNativeImeAdapter();
 }
 
 jboolean ContentViewCoreImpl::NeedsReload(JNIEnv* env, jobject obj) {
   return web_contents_->GetController().NeedsReload();
 }
@@ skipping 107 matching lines @@
   if (!HasField(env, clazz, "mNativeContentViewCore", "I")) {
     DLOG(ERROR) << "Unable to find ContentView.mNativeContentViewCore!";
     return false;
   }
   g_native_content_view = GetFieldID(env, clazz, "mNativeContentViewCore", "I");
 
   return RegisterNativesImpl(env) >= 0;
 }
 
 }  // namespace content