Revert of Remove webrtc/libjingle/{xmllite,xmpp}

webrtc/libjingle/xmpp/rostermodule.h

Index: webrtc/libjingle/xmpp/rostermodule.h
diff --git a/webrtc/libjingle/xmpp/rostermodule.h b/webrtc/libjingle/xmpp/rostermodule.h
new file mode 100644
index 0000000000000000000000000000000000000000..85d5d344072b54b479f525b8f0b2aabfdbd15251
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+++ b/webrtc/libjingle/xmpp/rostermodule.h
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+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_LIBJINGLE_XMPP_ROSTERMODULE_H_
+#define WEBRTC_LIBJINGLE_XMPP_ROSTERMODULE_H_
+
+#include "webrtc/libjingle/xmpp/module.h"
+
+namespace buzz {
+
+class XmppRosterModule;
+
+// The main way you initialize and use the module would be like this:
+//    XmppRosterModule *roster_module = XmppRosterModule::Create();
+//    roster_module->RegisterEngine(engine);
+//    roster_module->BroadcastPresence();
+//    roster_module->RequestRosterUpdate();
+
+//! This enum captures the valid values for the show attribute in a presence
+//! stanza
+enum XmppPresenceShow
+{
+  XMPP_PRESENCE_CHAT = 0,
+  XMPP_PRESENCE_DEFAULT = 1,
+  XMPP_PRESENCE_AWAY = 2,
+  XMPP_PRESENCE_XA = 3,
+  XMPP_PRESENCE_DND = 4,
+};
+
+//! These are the valid subscription states in a roster contact.  This
+//! represents the combination of the subscription and ask attributes
+enum XmppSubscriptionState
+{
+  XMPP_SUBSCRIPTION_NONE = 0,
+  XMPP_SUBSCRIPTION_NONE_ASKED = 1,
+  XMPP_SUBSCRIPTION_TO = 2,
+  XMPP_SUBSCRIPTION_FROM = 3,
+  XMPP_SUBSCRIPTION_FROM_ASKED = 4,
+  XMPP_SUBSCRIPTION_BOTH = 5,
+};
+
+//! These represent the valid types of presence stanzas for managing
+//! subscriptions
+enum XmppSubscriptionRequestType
+{
+  XMPP_REQUEST_SUBSCRIBE = 0,
+  XMPP_REQUEST_UNSUBSCRIBE = 1,
+  XMPP_REQUEST_SUBSCRIBED = 2,
+  XMPP_REQUEST_UNSUBSCRIBED = 3,
+};
+
+enum XmppPresenceAvailable {
+  XMPP_PRESENCE_UNAVAILABLE = 0,
+  XMPP_PRESENCE_AVAILABLE   = 1,
+  XMPP_PRESENCE_ERROR       = 2,
+};
+
+enum XmppPresenceConnectionStatus {
+  XMPP_CONNECTION_STATUS_UNKNOWN    = 0,
+  // Status set by the server while the user is being rung.
+  XMPP_CONNECTION_STATUS_CONNECTING = 1,
+  // Status set by the client when the user has accepted the ring but before
+  // the client has joined the call.
+  XMPP_CONNECTION_STATUS_JOINING    = 2,
+  // Status set by the client as part of joining the call.
+  XMPP_CONNECTION_STATUS_CONNECTED  = 3,
+  XMPP_CONNECTION_STATUS_HANGUP     = 4,
+};
+
+//! Presence Information
+//! This class stores both presence information for outgoing presence and is
+//! returned by methods in XmppRosterModule to represent recieved incoming
+//! presence information.  When this class is writeable (non-const) then each
+//! update to any property will set the inner xml.  Setting the raw_xml will
+//! rederive all of the other properties.
+class XmppPresence {
+public:
+  virtual ~XmppPresence() {}
+
+  //! Create a new Presence
+  //! This is typically only used when sending a directed presence
+  static XmppPresence* Create();
+
+  //! The Jid of for the presence information.
+  //! Typically this will be a full Jid with resource specified.
+  virtual const Jid jid() const = 0;
+
+  //! Is the contact available?
+  virtual XmppPresenceAvailable available() const = 0;
+
+  //! Sets if the user is available or not
+  virtual XmppReturnStatus set_available(XmppPresenceAvailable available) = 0;
+
+  //! The show value of the presence info
+  virtual XmppPresenceShow presence_show() const = 0;
+
+  //! Set the presence show value
+  virtual XmppReturnStatus set_presence_show(XmppPresenceShow show) = 0;
+
+  //! The Priority of the presence info
+  virtual int priority() const = 0;
+
+  //! Set the priority of the presence
+  virtual XmppReturnStatus set_priority(int priority) = 0;
+
+  //! The plain text status of the presence info.
+  //! If there are multiple status because of language, this will either be a
+  //! status that is not tagged for language or the first available
+  virtual const std::string status() const = 0;
+
+  //! Sets the status for the presence info.
+  //! If there is more than one status present already then this will remove
+  //! them all and replace it with one status element we no specified language
+  virtual XmppReturnStatus set_status(const std::string& status) = 0;
+
+  //! The connection status
+  virtual XmppPresenceConnectionStatus connection_status() const = 0;
+
+  //! The focus obfuscated GAIA id
+  virtual const std::string google_user_id() const = 0;
+
+  //! The nickname in the presence
+  virtual const std::string nickname() const = 0;
+
+  //! The raw xml of the presence update
+  virtual const XmlElement* raw_xml() const = 0;
+
+  //! Sets the raw presence stanza for the presence update
+  //! This will cause all other data items in this structure to be rederived
+  virtual XmppReturnStatus set_raw_xml(const XmlElement * xml) = 0;
+};
+
+//! A contact as given by the server
+class XmppRosterContact {
+public:
+  virtual ~XmppRosterContact() {}
+
+  //! Create a new roster contact
+  //! This is typically only used when doing a roster update/add
+  static XmppRosterContact* Create();
+
+  //! The jid for the contact.
+  //! Typically this will be a bare Jid.
+  virtual const Jid jid() const = 0;
+
+  //! Sets the jid for the roster contact update
+  virtual XmppReturnStatus set_jid(const Jid& jid) = 0;
+
+  //! The name (nickname) stored for this contact
+  virtual const std::string name() const = 0;
+
+  //! Sets the name
+  virtual XmppReturnStatus set_name(const std::string& name) = 0;
+
+  //! The Presence subscription state stored on the server for this contact
+  //! This is never settable and will be ignored when generating a roster
+  //! add/update request
+  virtual XmppSubscriptionState subscription_state() const = 0;
+
+  //! The number of Groups applied to this contact
+  virtual size_t GetGroupCount() const = 0;
+
+  //! Gets a Group applied to the contact based on index.
+  //! range
+  virtual const std::string GetGroup(size_t index) const = 0;
+
+  //! Adds a group to this contact.
+  //! This will return a bad argument error if the group is already there.
+  virtual XmppReturnStatus AddGroup(const std::string& group) = 0;
+
+  //! Removes a group from the contact.
+  //! This will return an error if the group cannot be found in the group list.
+  virtual XmppReturnStatus RemoveGroup(const std::string& group) = 0;
+
+  //! The raw xml for this roster contact
+  virtual const XmlElement* raw_xml() const = 0;
+
+  //! Sets the raw presence stanza for the contact update/add
+  //! This will cause all other data items in this structure to be rederived
+  virtual XmppReturnStatus set_raw_xml(const XmlElement * xml) = 0;
+};
+
+//! The XmppRosterHandler is an interface for callbacks from the module
+class XmppRosterHandler {
+public:
+  virtual ~XmppRosterHandler() {}
+
+  //! A request for a subscription has come in.
+  //! Typically, the UI will ask the user if it is okay to let the requester
+  //! get presence notifications for the user.  The response is send back
+  //! by calling ApproveSubscriber or CancelSubscriber.
+  virtual void SubscriptionRequest(XmppRosterModule* roster,
+                                   const Jid& requesting_jid,
+                                   XmppSubscriptionRequestType type,
+                                   const XmlElement* raw_xml) = 0;
+
+  //! Some type of presence error has occured
+  virtual void SubscriptionError(XmppRosterModule* roster,
+                                 const Jid& from,
+                                 const XmlElement* raw_xml) = 0;
+
+  virtual void RosterError(XmppRosterModule* roster,
+                           const XmlElement* raw_xml) = 0;
+
+  //! New presence information has come in
+  //! The user is notified with the presence object directly.  This info is also
+  //! added to the store accessable from the engine.
+  virtual void IncomingPresenceChanged(XmppRosterModule* roster,
+                                       const XmppPresence* presence) = 0;
+
+  //! A contact has changed
+  //! This indicates that the data for a contact may have changed.  No
+  //! contacts have been added or removed.
+  virtual void ContactChanged(XmppRosterModule* roster,
+                              const XmppRosterContact* old_contact,
+                              size_t index) = 0;
+
+  //! A set of contacts have been added
+  //! These contacts may have been added in response to the original roster
+  //! request or due to a "roster push" from the server.
+  virtual void ContactsAdded(XmppRosterModule* roster,
+                             size_t index, size_t number) = 0;
+
+  //! A contact has been removed
+  //! This contact has been removed form the list.
+  virtual void ContactRemoved(XmppRosterModule* roster,
+                              const XmppRosterContact* removed_contact,
+                              size_t index) = 0;
+
+};
+
+//! An XmppModule for handle roster and presence functionality
+class XmppRosterModule : public XmppModule {
+public:
+  //! Creates a new XmppRosterModule
+  static XmppRosterModule * Create();
+  virtual ~XmppRosterModule() {}
+
+  //! Sets the roster handler (callbacks) for the module
+  virtual XmppReturnStatus set_roster_handler(XmppRosterHandler * handler) = 0;
+
+  //! Gets the roster handler for the module
+  virtual XmppRosterHandler* roster_handler() = 0;
+
+  // USER PRESENCE STATE -------------------------------------------------------
+
+  //! Gets the aggregate outgoing presence
+  //! This object is non-const and be edited directly.  No update is sent
+  //! to the server until a Broadcast is sent
+  virtual XmppPresence* outgoing_presence() = 0;
+
+  //! Broadcasts that the user is available.
+  //! Nothing with respect to presence is sent until this is called.
+  virtual XmppReturnStatus BroadcastPresence() = 0;
+
+  //! Sends a directed presence to a Jid
+  //! Note that the client doesn't store where directed presence notifications
+  //! have been sent.  The server can keep the appropriate state
+  virtual XmppReturnStatus SendDirectedPresence(const XmppPresence* presence,
+                                                const Jid& to_jid) = 0;
+
+  // INCOMING PRESENCE STATUS --------------------------------------------------
+
+  //! Returns the number of incoming presence data recorded
+  virtual size_t GetIncomingPresenceCount() = 0;
+
+  //! Returns an incoming presence datum based on index
+  virtual const XmppPresence* GetIncomingPresence(size_t index) = 0;
+
+  //! Gets the number of presence data for a bare Jid
+  //! There may be a datum per resource
+  virtual size_t GetIncomingPresenceForJidCount(const Jid& jid) = 0;
+
+  //! Returns a single presence data for a Jid based on index
+  virtual const XmppPresence* GetIncomingPresenceForJid(const Jid& jid,
+                                                        size_t index) = 0;
+
+  // ROSTER MANAGEMENT ---------------------------------------------------------
+
+  //! Requests an update of the roster from the server
+  //! This must be called to initialize the client side cache of the roster
+  //! After this is sent the server should keep this module apprised of any
+  //! changes.
+  virtual XmppReturnStatus RequestRosterUpdate() = 0;
+
+  //! Returns the number of contacts in the roster
+  virtual size_t GetRosterContactCount() = 0;
+
+  //! Returns a contact by index
+  virtual const XmppRosterContact* GetRosterContact(size_t index) = 0;
+
+  //! Finds a contact by Jid
+  virtual const XmppRosterContact* FindRosterContact(const Jid& jid) = 0;
+
+  //! Send a request to the server to add a contact
+  //! Note that the contact won't show up in the roster until the server can
+  //! respond.  This happens async when the socket is being serviced
+  virtual XmppReturnStatus RequestRosterChange(
+    const XmppRosterContact* contact) = 0;
+
+  //! Request that the server remove a contact
+  //! The jabber protocol specifies that the server should also cancel any
+  //! subscriptions when this is done.  Like adding, this contact won't be
+  //! removed until the server responds.
+  virtual XmppReturnStatus RequestRosterRemove(const Jid& jid) = 0;
+
+  // SUBSCRIPTION MANAGEMENT ---------------------------------------------------
+
+  //! Request a subscription to presence notifications form a Jid
+  virtual XmppReturnStatus RequestSubscription(const Jid& jid) = 0;
+
+  //! Cancel a subscription to presence notifications from a Jid
+  virtual XmppReturnStatus CancelSubscription(const Jid& jid) = 0;
+
+  //! Approve a request to deliver presence notifications to a jid
+  virtual XmppReturnStatus ApproveSubscriber(const Jid& jid) = 0;
+
+  //! Deny or cancel presence notification deliver to a jid
+  virtual XmppReturnStatus CancelSubscriber(const Jid& jid) = 0;
+};
+
+}
+
+#endif  // WEBRTC_LIBJINGLE_XMPP_ROSTERMODULE_H_