mandoline/ui/browser/navigator_host_impl.cc

   1 // Copyright 2015 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 "mandoline/ui/browser/navigator_host_impl.h"
   6
   7 #include "mandoline/ui/browser/browser.h"
   8
   9 namespace mandoline {
  10
  11 NavigatorHostImpl::NavigatorHostImpl(Browser* browser)
  12     : current_index_(-1), browser_(browser) {
  13 }
  14
  15 NavigatorHostImpl::~NavigatorHostImpl() {
  16 }
  17
  18 void NavigatorHostImpl::Bind(
  19     mojo::InterfaceRequest<mojo::NavigatorHost> request) {
  20   bindings_.AddBinding(this, request.Pass());
  21 }
  22
  23 void NavigatorHostImpl::DidNavigateLocally(const mojo::String& url) {
  24   RecordNavigation(url);
  25   // TODO(abarth): Do something interesting.
  26 }
  27
  28 void NavigatorHostImpl::RequestNavigate(mojo::Target target,
  29                                         mojo::URLRequestPtr request) {
  30   // The Browser sets up default services including navigation.
  31   browser_->ReplaceContentWithURL(request->url);
  32 }
  33
  34 void NavigatorHostImpl::RequestNavigateHistory(int32_t delta) {
  35   if (history_.empty())
  36     return;
  37   current_index_ =
  38       std::max(0, std::min(current_index_ + delta,
  39                            static_cast<int32_t>(history_.size()) - 1));
  40   browser_->ReplaceContentWithURL(history_[current_index_]);
  41 }
  42
  43 void NavigatorHostImpl::RecordNavigation(const std::string& url) {
  44   if (current_index_ >= 0 && history_[current_index_] == url) {
  45     // This is a navigation to the current entry, ignore.
  46     return;
  47   }
  48
  49   history_.erase(history_.begin() + (current_index_ + 1), history_.end());
  50   history_.push_back(url);
  51   ++current_index_;
  52 }
  53
  54 }  // namespace mandoline