// 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/renderer/aw_content_renderer_client.h"

#include "android_webview/common/aw_resource.h"
#include "android_webview/common/url_constants.h"
#include "android_webview/renderer/aw_render_view_ext.h"
#include "android_webview/renderer/view_renderer.h"
#include "base/message_loop.h"
#include "base/utf_string_conversions.h"
#include "components/visitedlink/renderer/visitedlink_slave.h"
#include "content/public/renderer/render_thread.h"
#include "googleurl/src/gurl.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebURL.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebURLError.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebURLRequest.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityPolicy.h"

namespace android_webview {

AwContentRendererClient::AwContentRendererClient(
    CompositorMessageLoopGetter* compositor_message_loop_getter,
    bool should_create_compositor_input_handler)
    : compositor_message_loop_getter_(compositor_message_loop_getter),
      should_create_compositor_input_handler_(
          should_create_compositor_input_handler) {
}

AwContentRendererClient::~AwContentRendererClient() {
}

void AwContentRendererClient::RenderThreadStarted() {
  WebKit::WebString content_scheme(
      ASCIIToUTF16(android_webview::kContentScheme));
  WebKit::WebSecurityPolicy::registerURLSchemeAsLocal(content_scheme);

  content::RenderThread* thread = content::RenderThread::Get();

  aw_render_process_observer_.reset(new AwRenderProcessObserver);
  thread->AddObserver(aw_render_process_observer_.get());

  visited_link_slave_.reset(new components::VisitedLinkSlave);
  thread->AddObserver(visited_link_slave_.get());
}

void AwContentRendererClient::RenderViewCreated(
    content::RenderView* render_view) {
  AwRenderViewExt::RenderViewCreated(render_view);
  ViewRenderer::RenderViewCreated(render_view);
}

std::string AwContentRendererClient::GetDefaultEncoding() {
  return AwResource::GetDefaultTextEncoding();
}

bool AwContentRendererClient::HasErrorPage(int http_status_code,
                          std::string* error_domain) {
  return http_status_code >= 400;
}

void AwContentRendererClient::GetNavigationErrorStrings(
    const WebKit::WebURLRequest& failed_request,
    const WebKit::WebURLError& error,
    std::string* error_html,
    string16* error_description) {
  if (error_html) {
    GURL error_url(failed_request.url());
    std::string err = UTF16ToUTF8(error.localizedDescription);
    std::string contents;
    if (err.empty()) {
      contents = AwResource::GetNoDomainPageContent();
    } else {
      contents = AwResource::GetLoadErrorPageContent();
      ReplaceSubstringsAfterOffset(&contents, 0, "%e", err);
    }

    ReplaceSubstringsAfterOffset(&contents, 0, "%s",
                                 error_url.possibly_invalid_spec());
    *error_html = contents;
  }
}

unsigned long long AwContentRendererClient::VisitedLinkHash(
    const char* canonical_url,
    size_t length) {
  return visited_link_slave_->ComputeURLFingerprint(canonical_url, length);
}

bool AwContentRendererClient::IsLinkVisited(unsigned long long link_hash) {
  return visited_link_slave_->IsVisited(link_hash);
}

void AwContentRendererClient::PrefetchHostName(const char* hostname,
                                               size_t length) {
  // TODO(boliu): Implement hostname prefetch for Android WebView.
  // Perhaps componentize chrome implementation or move to content/?
}

MessageLoop* AwContentRendererClient::OverrideCompositorMessageLoop() const {
  return (*compositor_message_loop_getter_)();
}

bool AwContentRendererClient::ShouldCreateCompositorInputHandler() const {
  return should_create_compositor_input_handler_;
}

}  // namespace android_webview