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// Copyright 2019 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.
#ifndef WEBLAYER_PUBLIC_NAVIGATION_CONTROLLER_H_
#define WEBLAYER_PUBLIC_NAVIGATION_CONTROLLER_H_
#include <algorithm>
#include <string>
class GURL;
namespace weblayer {
class NavigationObserver;
class NavigationController {
public:
// The members of this struct and their defaults should be kept in sync with
// |NavigationController::LoadURLParams|.
struct NavigateParams {
bool should_replace_current_entry = false;
};
virtual ~NavigationController() = default;
virtual void AddObserver(NavigationObserver* observer) = 0;
virtual void RemoveObserver(NavigationObserver* observer) = 0;
virtual void Navigate(const GURL& url) = 0;
virtual void Navigate(const GURL& url, const NavigateParams& params) = 0;
virtual void GoBack() = 0;
virtual void GoForward() = 0;
virtual bool CanGoBack() = 0;
virtual bool CanGoForward() = 0;
// Navigates to the specified absolute index.
virtual void GoToIndex(int index) = 0;
virtual void Reload() = 0;
virtual void Stop() = 0;
// Gets the number of entries in the back/forward list.
virtual int GetNavigationListSize() = 0;
// Gets the index of the current entry in the back/forward list, or -1 if
// there are no entries.
virtual int GetNavigationListCurrentIndex() = 0;
// Gets the URL of the given entry in the back/forward list, or an empty GURL
// if there is no navigation entry at that index.
virtual GURL GetNavigationEntryDisplayURL(int index) = 0;
// Gets the page title of the given entry in the back/forward list, or an
// empty string if there is no navigation entry at that index.
virtual std::string GetNavigationEntryTitle(int index) = 0;
// Returns whether this entry will be skipped on a call to GoBack() or
// GoForward(). This will be true for navigations that were done without a
// user gesture, including both client side redirects and history.pushState.
virtual bool IsNavigationEntrySkippable(int index) = 0;
};
} // namespace weblayer
#endif // WEBLAYER_PUBLIC_NAVIGATION_CONTROLLER_H_
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