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// Copyright 2014 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 <memory>
#include "base/strings/string16.h"
#include "base/supports_user_data.h"
#include "base/time/time.h"
#import "ios/web/public/user_agent.h"
#import "ios/web/public/web_state/page_display_state.h"
#include "ui/base/page_transition_types.h"
class GURL;
@class NSDictionary;
namespace web {
struct FaviconStatus;
struct Referrer;
struct SSLStatus;
// A NavigationItem is a data structure that captures all the information
// required to recreate a browsing state. It represents one point in the
// chain of navigation managed by a NavigationManager.
class NavigationItem : public base::SupportsUserData {
// Creates a new NavigationItem.
static std::unique_ptr<NavigationItem> Create();
// Page-related stuff --------------------------------------------------------
// A unique ID is preserved across commits and redirects, which means that
// sometimes a NavigationEntry's unique ID needs to be set (e.g. when
// creating a committed entry to correspond to a to-be-deleted pending entry,
// the pending entry's ID must be copied).
virtual int GetUniqueID() const = 0;
// The original URL for the navigation request. This may differ from GetURL()
// if a redirect occurs after attempting to load this original URL.
virtual void SetOriginalRequestURL(const GURL& url) = 0;
virtual const GURL& GetOriginalRequestURL() const = 0;
// The actual URL of the page. For some about pages, this may be a scary
// data: URL or something like that. Use GetVirtualURL() below for showing to
// the user.
virtual void SetURL(const GURL& url) = 0;
virtual const GURL& GetURL() const = 0;
// The referring URL. Can be empty.
virtual void SetReferrer(const Referrer& referrer) = 0;
virtual const Referrer& GetReferrer() const = 0;
// The virtual URL, when nonempty, will override the actual URL of the page
// when we display it to the user. This allows us to have nice and friendly
// URLs that the user sees for things like about: URLs, but actually feed
// the renderer a data URL that results in the content loading.
// GetVirtualURL() will return the URL to display to the user in all cases, so
// if there is no overridden display URL, it will return the actual one.
virtual void SetVirtualURL(const GURL& url) = 0;
virtual const GURL& GetVirtualURL() const = 0;
// The title as set by the page. This will be empty if there is no title set.
// The caller is responsible for detecting when there is no title and
// displaying the appropriate "Untitled" label if this is being displayed to
// the user.
virtual void SetTitle(const base::string16& title) = 0;
virtual const base::string16& GetTitle() const = 0;
// Stores the NavigationItem's last recorded scroll offset and zoom scale.
virtual void SetPageDisplayState(const PageDisplayState& page_state) = 0;
virtual const PageDisplayState& GetPageDisplayState() const = 0;
// Page-related helpers ------------------------------------------------------
// Returns the title to be displayed on the tab. This could be the title of
// the page if it is available or the URL.
virtual const base::string16& GetTitleForDisplay() const = 0;
// Tracking stuff ------------------------------------------------------------
// The transition type indicates what the user did to move to this page from
// the previous page.
virtual void SetTransitionType(ui::PageTransition transition_type) = 0;
virtual ui::PageTransition GetTransitionType() const = 0;
// The favicon data and tracking information. See web::FaviconStatus.
virtual const FaviconStatus& GetFavicon() const = 0;
virtual FaviconStatus& GetFavicon() = 0;
// All the SSL flags and state. See web::SSLStatus.
virtual const SSLStatus& GetSSL() const = 0;
virtual SSLStatus& GetSSL() = 0;
// The time at which the last known local navigation has
// completed. (A navigation can be completed more than once if the
// page is reloaded.)
// If GetTimestamp() returns a null time, that means that either:
// - this navigation hasn't completed yet;
// - this navigation was restored and for some reason the
// timestamp wasn't available;
// - or this navigation was copied from a foreign session.
virtual void SetTimestamp(base::Time timestamp) = 0;
virtual base::Time GetTimestamp() const = 0;
// The type of user agent requested for the navigation.
// TODO( Create equivalent enum type for WebContents.
virtual void SetUserAgentType(UserAgentType type) = 0;
virtual UserAgentType GetUserAgentType() const = 0;
// |true| if this item is the result of a POST request with data.
virtual bool HasPostData() const = 0;
// Returns the item's current http request headers.
virtual NSDictionary* GetHttpRequestHeaders() const = 0;
// Adds headers from |additional_headers| to the item's http request headers.
// Existing headers with the same key will be overridden.
virtual void AddHttpRequestHeaders(NSDictionary* additional_headers) = 0;
} // namespace web