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|
/**
* @file llnotifications.h
* @brief Non-UI manager and support for keeping a prioritized list of notifications
* @author Q (with assistance from Richard and Coco)
*
* $LicenseInfo:firstyear=2008&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLNOTIFICATIONS_H
#define LL_LLNOTIFICATIONS_H
/**
* This system is intended to provide a singleton mechanism for adding
* notifications to one of an arbitrary set of event channels.
*
* Controlling JIRA: DEV-9061
*
* Every notification has (see code for full list):
* - a textual name, which is used to look up its template in the XML files
* - a payload, which is a block of LLSD
* - a channel, which is normally extracted from the XML files but
* can be overridden.
* - a timestamp, used to order the notifications
* - expiration time -- if nonzero, specifies a time after which the
* notification will no longer be valid.
* - a callback name and a couple of status bits related to callbacks (see below)
*
* There is a management class called LLNotifications, which is an LLSingleton.
* The class maintains a collection of all of the notifications received
* or processed during this session, and also manages the persistence
* of those notifications that must be persisted.
*
* We also have Channels. A channel is a view on a collection of notifications;
* The collection is defined by a filter function that controls which
* notifications are in the channel, and its ordering is controlled by
* a comparator.
*
* There is a hierarchy of channels; notifications flow down from
* the management class (LLNotifications, which itself inherits from
* The channel base class) to the individual channels.
* Any change to notifications (add, delete, modify) is
* automatically propagated through the channel hierarchy.
*
* We provide methods for adding a new notification, for removing
* one, and for managing channels. Channels are relatively cheap to construct
* and maintain, so in general, human interfaces should use channels to
* select and manage their lists of notifications.
*
* We also maintain a collection of templates that are loaded from the
* XML file of template translations. The system supports substitution
* of named variables from the payload into the XML file.
*
* By default, only the "unknown message" template is built into the system.
* It is not an error to add a notification that's not found in the
* template system, but it is logged.
*
*/
#include <string>
#include <list>
#include <vector>
#include <map>
#include <set>
#include <iomanip>
#include <sstream>
#include <boost/utility.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <boost/type_traits.hpp>
#include <boost/signals2.hpp>
#include "llevents.h"
#include "llfunctorregistry.h"
#include "llinitparam.h"
#include "llnotificationslistener.h"
#include "llnotificationptr.h"
#include "llpointer.h"
#include "llrefcount.h"
#include "llsdparam.h"
class LLAvatarName;
typedef enum e_notification_priority
{
NOTIFICATION_PRIORITY_UNSPECIFIED,
NOTIFICATION_PRIORITY_LOW,
NOTIFICATION_PRIORITY_NORMAL,
NOTIFICATION_PRIORITY_HIGH,
NOTIFICATION_PRIORITY_CRITICAL
} ENotificationPriority;
struct NotificationPriorityValues : public LLInitParam::TypeValuesHelper<ENotificationPriority, NotificationPriorityValues>
{
static void declareValues();
};
class LLNotificationResponderInterface
{
public:
LLNotificationResponderInterface(){};
virtual ~LLNotificationResponderInterface(){};
virtual void handleRespond(const LLSD& notification, const LLSD& response) = 0;
virtual LLSD asLLSD() = 0;
virtual void fromLLSD(const LLSD& params) = 0;
};
typedef boost::function<void (const LLSD&, const LLSD&)> LLNotificationResponder;
typedef boost::shared_ptr<LLNotificationResponderInterface> LLNotificationResponderPtr;
typedef LLFunctorRegistry<LLNotificationResponder> LLNotificationFunctorRegistry;
typedef LLFunctorRegistration<LLNotificationResponder> LLNotificationFunctorRegistration;
// context data that can be looked up via a notification's payload by the display logic
// derive from this class to implement specific contexts
class LLNotificationContext : public LLInstanceTracker<LLNotificationContext, LLUUID>
{
public:
LLNotificationContext() : LLInstanceTracker<LLNotificationContext, LLUUID>(LLUUID::generateNewID())
{
}
virtual ~LLNotificationContext() {}
LLSD asLLSD() const
{
return getKey();
}
private:
};
// Contains notification form data, such as buttons and text fields along with
// manipulator functions
class LLNotificationForm
{
LOG_CLASS(LLNotificationForm);
public:
struct FormElementBase : public LLInitParam::Block<FormElementBase>
{
Optional<std::string> name;
Optional<bool> enabled;
FormElementBase();
};
struct FormIgnore : public LLInitParam::Block<FormIgnore, FormElementBase>
{
Optional<std::string> text;
Optional<bool> save_option;
Optional<std::string> control;
Optional<bool> invert_control;
FormIgnore();
};
struct FormButton : public LLInitParam::Block<FormButton, FormElementBase>
{
Mandatory<S32> index;
Mandatory<std::string> text;
Optional<std::string> ignore;
Optional<bool> is_default;
Mandatory<std::string> type;
FormButton();
};
struct FormInput : public LLInitParam::Block<FormInput, FormElementBase>
{
Mandatory<std::string> type;
Optional<S32> width;
Optional<S32> max_length_chars;
Optional<std::string> text;
Optional<std::string> value;
FormInput();
};
struct FormElement : public LLInitParam::ChoiceBlock<FormElement>
{
Alternative<FormButton> button;
Alternative<FormInput> input;
FormElement();
};
struct FormElements : public LLInitParam::Block<FormElements>
{
Multiple<FormElement> elements;
FormElements();
};
struct Params : public LLInitParam::Block<Params>
{
Optional<std::string> name;
Optional<FormIgnore> ignore;
Optional<FormElements> form_elements;
Params();
};
typedef enum e_ignore_type
{
IGNORE_NO,
IGNORE_WITH_DEFAULT_RESPONSE,
IGNORE_WITH_LAST_RESPONSE,
IGNORE_SHOW_AGAIN
} EIgnoreType;
LLNotificationForm();
LLNotificationForm(const LLNotificationForm&);
LLNotificationForm(const LLSD& sd);
LLNotificationForm(const std::string& name, const Params& p);
void fromLLSD(const LLSD& sd);
LLSD asLLSD() const;
S32 getNumElements() { return mFormData.size(); }
LLSD getElement(S32 index) { return mFormData.get(index); }
LLSD getElement(const std::string& element_name);
bool hasElement(const std::string& element_name) const;
bool getElementEnabled(const std::string& element_name) const;
void setElementEnabled(const std::string& element_name, bool enabled);
void addElement(const std::string& type, const std::string& name, const LLSD& value = LLSD(), bool enabled = true);
void formatElements(const LLSD& substitutions);
// appends form elements from another form serialized as LLSD
void append(const LLSD& sub_form);
std::string getDefaultOption();
LLPointer<class LLControlVariable> getIgnoreSetting();
bool getIgnored();
void setIgnored(bool ignored);
EIgnoreType getIgnoreType() { return mIgnore; }
std::string getIgnoreMessage() { return mIgnoreMsg; }
private:
LLSD mFormData;
EIgnoreType mIgnore;
std::string mIgnoreMsg;
LLPointer<class LLControlVariable> mIgnoreSetting;
bool mInvertSetting;
};
typedef boost::shared_ptr<LLNotificationForm> LLNotificationFormPtr;
struct LLNotificationTemplate;
// we want to keep a map of these by name, and it's best to manage them
// with smart pointers
typedef boost::shared_ptr<LLNotificationTemplate> LLNotificationTemplatePtr;
struct LLNotificationVisibilityRule;
typedef boost::shared_ptr<LLNotificationVisibilityRule> LLNotificationVisibilityRulePtr;
/**
* @class LLNotification
* @brief The object that expresses the details of a notification
*
* We make this noncopyable because
* we want to manage these through LLNotificationPtr, and only
* ever create one instance of any given notification.
*
* The enable_shared_from_this flag ensures that if we construct
* a smart pointer from a notification, we'll always get the same
* shared pointer.
*/
class LLNotification :
boost::noncopyable,
public boost::enable_shared_from_this<LLNotification>
{
LOG_CLASS(LLNotification);
friend class LLNotifications;
public:
// parameter object used to instantiate a new notification
struct Params : public LLInitParam::Block<Params>
{
friend class LLNotification;
Mandatory<std::string> name;
Optional<LLUUID> id;
Optional<LLSD> substitutions,
form_elements,
payload;
Optional<ENotificationPriority, NotificationPriorityValues> priority;
Optional<LLDate> time_stamp,
expiry;
Optional<LLNotificationContext*> context;
Optional<void*> responder;
Optional<bool> offer_from_agent;
struct Functor : public LLInitParam::ChoiceBlock<Functor>
{
Alternative<std::string> name;
Alternative<LLNotificationFunctorRegistry::ResponseFunctor> function;
Alternative<LLNotificationResponderPtr> responder;
Functor()
: name("responseFunctor"),
function("functor"),
responder("responder")
{}
};
Optional<Functor> functor;
Params()
: name("name"),
id("id"),
priority("priority", NOTIFICATION_PRIORITY_UNSPECIFIED),
time_stamp("time"),
payload("payload"),
form_elements("form"),
substitutions("substitutions"),
expiry("expiry"),
offer_from_agent("offer_from_agent", false)
{
time_stamp = LLDate::now();
responder = NULL;
}
Params(const std::string& _name)
: name("name"),
priority("priority", NOTIFICATION_PRIORITY_UNSPECIFIED),
time_stamp("time"),
payload("payload"),
form_elements("form"),
substitutions("substitutions"),
expiry("expiry"),
offer_from_agent("offer_from_agent", false)
{
functor.name = _name;
name = _name;
time_stamp = LLDate::now();
responder = NULL;
}
};
LLNotificationResponderPtr getResponderPtr() { return mResponder; }
private:
const LLUUID mId;
LLSD mPayload;
LLSD mSubstitutions;
LLDate mTimestamp;
LLDate mExpiresAt;
bool mCancelled;
bool mRespondedTo; // once the notification has been responded to, this becomes true
LLSD mResponse;
bool mIgnored;
ENotificationPriority mPriority;
LLNotificationFormPtr mForm;
void* mResponderObj; // TODO - refactor/remove this field
LLNotificationResponderPtr mResponder;
bool mOfferFromAgent;
// a reference to the template
LLNotificationTemplatePtr mTemplatep;
/*
We want to be able to store and reload notifications so that they can survive
a shutdown/restart of the client. So we can't simply pass in callbacks;
we have to specify a callback mechanism that can be used by name rather than
by some arbitrary pointer -- and then people have to initialize callbacks
in some useful location. So we use LLNotificationFunctorRegistry to manage them.
*/
std::string mResponseFunctorName;
/*
In cases where we want to specify an explict, non-persisted callback,
we store that in the callback registry under a dynamically generated
key, and store the key in the notification, so we can still look it up
using the same mechanism.
*/
bool mTemporaryResponder;
void init(const std::string& template_name, const LLSD& form_elements);
void cancel();
public:
LLNotification(const LLSDParamAdapter<Params>& p);
void setResponseFunctor(std::string const &responseFunctorName);
void setResponseFunctor(const LLNotificationFunctorRegistry::ResponseFunctor& cb);
void setResponseFunctor(const LLNotificationResponderPtr& responder);
typedef enum e_response_template_type
{
WITHOUT_DEFAULT_BUTTON,
WITH_DEFAULT_BUTTON
} EResponseTemplateType;
// return response LLSD filled in with default form contents and (optionally) the default button selected
LLSD getResponseTemplate(EResponseTemplateType type = WITHOUT_DEFAULT_BUTTON);
// returns index of first button with value==TRUE
// usually this the button the user clicked on
// returns -1 if no button clicked (e.g. form has not been displayed)
static S32 getSelectedOption(const LLSD& notification, const LLSD& response);
// returns name of first button with value==TRUE
static std::string getSelectedOptionName(const LLSD& notification);
// after someone responds to a notification (usually by clicking a button,
// but sometimes by filling out a little form and THEN clicking a button),
// the result of the response (the name and value of the button clicked,
// plus any other data) should be packaged up as LLSD, then passed as a
// parameter to the notification's respond() method here. This will look up
// and call the appropriate responder.
//
// response is notification serialized as LLSD:
// ["name"] = notification name
// ["form"] = LLSD tree that includes form description and any prefilled form data
// ["response"] = form data filled in by user
// (including, but not limited to which button they clicked on)
// ["payload"] = transaction specific data, such as ["source_id"] (originator of notification),
// ["item_id"] (attached inventory item), etc.
// ["substitutions"] = string substitutions used to generate notification message
// from the template
// ["time"] = time at which notification was generated;
// ["expiry"] = time at which notification expires;
// ["responseFunctor"] = name of registered functor that handles responses to notification;
LLSD asLLSD();
const LLNotificationFormPtr getForm();
void updateForm(const LLNotificationFormPtr& form);
void repost();
void respond(const LLSD& sd);
void respondWithDefault();
void* getResponder() { return mResponderObj; }
void setResponder(void* responder) { mResponderObj = responder; }
void setIgnored(bool ignore);
bool isCancelled() const
{
return mCancelled;
}
bool isRespondedTo() const
{
return mRespondedTo;
}
bool isActive() const
{
return !isRespondedTo()
&& !isCancelled()
&& !isExpired();
}
const LLSD& getResponse() { return mResponse; }
bool isIgnored() const
{
return mIgnored;
}
const std::string& getName() const;
const std::string& getIcon() const;
bool isPersistent() const;
const LLUUID& id() const
{
return mId;
}
const LLSD& getPayload() const
{
return mPayload;
}
const LLSD& getSubstitutions() const
{
return mSubstitutions;
}
const LLDate& getDate() const
{
return mTimestamp;
}
bool getOfferFromAgent() const
{
return mOfferFromAgent;
}
std::string getType() const;
std::string getMessage() const;
std::string getFooter() const;
std::string getLabel() const;
std::string getURL() const;
S32 getURLOption() const;
S32 getURLOpenExternally() const;
bool canLogToChat() const;
bool canLogToIM() const;
bool canShowToast() const;
bool hasFormElements() const;
void playSound();
typedef enum e_combine_behavior
{
REPLACE_WITH_NEW,
KEEP_OLD,
CANCEL_OLD
} ECombineBehavior;
ECombineBehavior getCombineBehavior() const;
const LLDate getExpiration() const
{
return mExpiresAt;
}
ENotificationPriority getPriority() const
{
return mPriority;
}
const LLUUID getID() const
{
return mId;
}
// comparing two notifications normally means comparing them by UUID (so we can look them
// up quickly this way)
bool operator<(const LLNotification& rhs) const
{
return mId < rhs.mId;
}
bool operator==(const LLNotification& rhs) const
{
return mId == rhs.mId;
}
bool operator!=(const LLNotification& rhs) const
{
return !operator==(rhs);
}
bool isSameObjectAs(const LLNotification* rhs) const
{
return this == rhs;
}
// this object has been updated, so tell all our clients
void update();
void updateFrom(LLNotificationPtr other);
// A fuzzy equals comparator.
// true only if both notifications have the same template and
// 1) flagged as unique (there can be only one of these) OR
// 2) all required payload fields of each also exist in the other.
bool isEquivalentTo(LLNotificationPtr that) const;
// if the current time is greater than the expiration, the notification is expired
bool isExpired() const
{
if (mExpiresAt.secondsSinceEpoch() == 0)
{
return false;
}
LLDate rightnow = LLDate::now();
return rightnow > mExpiresAt;
}
std::string summarize() const;
bool hasUniquenessConstraints() const;
bool matchesTag(const std::string& tag);
virtual ~LLNotification() {}
};
std::ostream& operator<<(std::ostream& s, const LLNotification& notification);
namespace LLNotificationFilters
{
// a sample filter
bool includeEverything(LLNotificationPtr p);
typedef enum e_comparison
{
EQUAL,
LESS,
GREATER,
LESS_EQUAL,
GREATER_EQUAL
} EComparison;
// generic filter functor that takes method or member variable reference
template<typename T>
struct filterBy
{
typedef boost::function<T (LLNotificationPtr)> field_t;
typedef typename boost::remove_reference<T>::type value_t;
filterBy(field_t field, value_t value, EComparison comparison = EQUAL)
: mField(field),
mFilterValue(value),
mComparison(comparison)
{
}
bool operator()(LLNotificationPtr p)
{
switch(mComparison)
{
case EQUAL:
return mField(p) == mFilterValue;
case LESS:
return mField(p) < mFilterValue;
case GREATER:
return mField(p) > mFilterValue;
case LESS_EQUAL:
return mField(p) <= mFilterValue;
case GREATER_EQUAL:
return mField(p) >= mFilterValue;
default:
return false;
}
}
field_t mField;
value_t mFilterValue;
EComparison mComparison;
};
};
namespace LLNotificationComparators
{
struct orderByUUID
{
bool operator()(LLNotificationPtr lhs, LLNotificationPtr rhs)
{
return lhs->id() < rhs->id();
}
};
};
typedef boost::function<bool (LLNotificationPtr)> LLNotificationFilter;
typedef boost::function<bool (LLNotificationPtr, LLNotificationPtr)> LLNotificationComparator;
typedef std::set<LLNotificationPtr, LLNotificationComparators::orderByUUID> LLNotificationSet;
typedef std::multimap<std::string, LLNotificationPtr> LLNotificationMap;
// ========================================================
// Abstract base class (interface) for a channel; also used for the master container.
// This lets us arrange channels into a call hierarchy.
// We maintain a hierarchy of notification channels; events are always started at the top
// and propagated through the hierarchy only if they pass a filter.
// Any channel can be created with a parent. A null parent (empty string) means it's
// tied to the root of the tree (the LLNotifications class itself).
// The default hierarchy looks like this:
//
// LLNotifications --+-- Expiration --+-- Mute --+-- Ignore --+-- Visible --+-- History
// +-- Alerts
// +-- Notifications
//
// In general, new channels that want to only see notifications that pass through
// all of the built-in tests should attach to the "Visible" channel
//
class LLNotificationChannelBase :
public LLEventTrackable,
public LLRefCount
{
LOG_CLASS(LLNotificationChannelBase);
public:
LLNotificationChannelBase(LLNotificationFilter filter)
: mFilter(filter),
mItems()
{}
virtual ~LLNotificationChannelBase() {}
// you can also connect to a Channel, so you can be notified of
// changes to this channel
template <typename LISTENER>
LLBoundListener connectChanged(const LISTENER& slot)
{
// Examine slot to see if it binds an LLEventTrackable subclass, or a
// boost::shared_ptr to something, or a boost::weak_ptr to something.
// Call this->connectChangedImpl() to actually connect it.
return LLEventDetail::visit_and_connect(slot,
boost::bind(&LLNotificationChannelBase::connectChangedImpl,
this,
_1));
}
template <typename LISTENER>
LLBoundListener connectAtFrontChanged(const LISTENER& slot)
{
return LLEventDetail::visit_and_connect(slot,
boost::bind(&LLNotificationChannelBase::connectAtFrontChangedImpl,
this,
_1));
}
template <typename LISTENER>
LLBoundListener connectPassedFilter(const LISTENER& slot)
{
// see comments in connectChanged()
return LLEventDetail::visit_and_connect(slot,
boost::bind(&LLNotificationChannelBase::connectPassedFilterImpl,
this,
_1));
}
template <typename LISTENER>
LLBoundListener connectFailedFilter(const LISTENER& slot)
{
// see comments in connectChanged()
return LLEventDetail::visit_and_connect(slot,
boost::bind(&LLNotificationChannelBase::connectFailedFilterImpl,
this,
_1));
}
// use this when items change or to add a new one
bool updateItem(const LLSD& payload);
const LLNotificationFilter& getFilter() { return mFilter; }
protected:
LLBoundListener connectChangedImpl(const LLEventListener& slot);
LLBoundListener connectAtFrontChangedImpl(const LLEventListener& slot);
LLBoundListener connectPassedFilterImpl(const LLEventListener& slot);
LLBoundListener connectFailedFilterImpl(const LLEventListener& slot);
LLNotificationSet mItems;
LLStandardSignal mChanged;
LLStandardSignal mPassedFilter;
LLStandardSignal mFailedFilter;
// these are action methods that subclasses can override to take action
// on specific types of changes; the management of the mItems list is
// still handled by the generic handler.
virtual void onLoad(LLNotificationPtr p) {}
virtual void onAdd(LLNotificationPtr p) {}
virtual void onDelete(LLNotificationPtr p) {}
virtual void onChange(LLNotificationPtr p) {}
bool updateItem(const LLSD& payload, LLNotificationPtr pNotification);
LLNotificationFilter mFilter;
};
// The type of the pointers that we're going to manage in the NotificationQueue system
// Because LLNotifications is a singleton, we don't actually expect to ever
// destroy it, but if it becomes necessary to do so, the shared_ptr model
// will ensure that we don't leak resources.
class LLNotificationChannel;
typedef boost::intrusive_ptr<LLNotificationChannel> LLNotificationChannelPtr;
// manages a list of notifications
// Note that if this is ever copied around, we might find ourselves with multiple copies
// of a queue with notifications being added to different nonequivalent copies. So we
// make it inherit from boost::noncopyable, and then create a map of LLPointer to manage it.
//
class LLNotificationChannel :
boost::noncopyable,
public LLNotificationChannelBase,
public LLInstanceTracker<LLNotificationChannel, std::string>
{
LOG_CLASS(LLNotificationChannel);
public:
// Notification Channels have a filter, which determines which notifications
// will be added to this channel.
// Channel filters cannot change.
struct Params : public LLInitParam::Block<Params>
{
Mandatory<std::string> name;
Optional<LLNotificationFilter> filter;
Multiple<std::string> sources;
};
LLNotificationChannel(const Params& p = Params());
LLNotificationChannel(const std::string& name, const std::string& parent, LLNotificationFilter filter);
virtual ~LLNotificationChannel() {}
typedef LLNotificationSet::iterator Iterator;
std::string getName() const { return mName; }
void connectToChannel(const std::string& channel_name);
bool isEmpty() const;
Iterator begin();
Iterator end();
size_t size();
std::string summarize();
private:
std::string mName;
std::string mParent;
LLNotificationComparator mComparator;
};
// An interface class to provide a clean linker seam to the LLNotifications class.
// Extend this interface as needed for your use of LLNotifications.
class LLNotificationsInterface
{
public:
virtual LLNotificationPtr add(const std::string& name,
const LLSD& substitutions,
const LLSD& payload,
LLNotificationFunctorRegistry::ResponseFunctor functor) = 0;
};
class LLNotifications :
public LLNotificationsInterface,
public LLSingleton<LLNotifications>,
public LLNotificationChannelBase
{
LOG_CLASS(LLNotifications);
friend class LLSingleton<LLNotifications>;
public:
// load all notification descriptions from file
// calling more than once will overwrite existing templates
// but never delete a template
bool loadTemplates();
// load visibility rules from file;
// OK to call more than once because it will reload
bool loadVisibilityRules();
// Add a simple notification (from XUI)
void addFromCallback(const LLSD& name);
// *NOTE: To add simple notifications, #include "llnotificationsutil.h"
// and use LLNotificationsUtil::add("MyNote") or add("MyNote", args)
LLNotificationPtr add(const std::string& name,
const LLSD& substitutions,
const LLSD& payload);
LLNotificationPtr add(const std::string& name,
const LLSD& substitutions,
const LLSD& payload,
const std::string& functor_name);
/* virtual */ LLNotificationPtr add(const std::string& name,
const LLSD& substitutions,
const LLSD& payload,
LLNotificationFunctorRegistry::ResponseFunctor functor);
LLNotificationPtr add(const LLNotification::Params& p);
void add(const LLNotificationPtr pNotif);
void cancel(LLNotificationPtr pNotif);
void cancelByName(const std::string& name);
void update(const LLNotificationPtr pNotif);
LLNotificationPtr find(LLUUID uuid);
typedef boost::function<void (LLNotificationPtr)> NotificationProcess;
void forEachNotification(NotificationProcess process);
// This is all stuff for managing the templates
// take your template out
LLNotificationTemplatePtr getTemplate(const std::string& name);
// get the whole collection
typedef std::vector<std::string> TemplateNames;
TemplateNames getTemplateNames() const; // returns a list of notification names
typedef std::map<std::string, LLNotificationTemplatePtr> TemplateMap;
TemplateMap::const_iterator templatesBegin() { return mTemplates.begin(); }
TemplateMap::const_iterator templatesEnd() { return mTemplates.end(); }
// test for existence
bool templateExists(const std::string& name);
typedef std::list<LLNotificationVisibilityRulePtr> VisibilityRuleList;
void forceResponse(const LLNotification::Params& params, S32 option);
void createDefaultChannels();
LLNotificationChannelPtr getChannel(const std::string& channelName);
std::string getGlobalString(const std::string& key) const;
void setIgnoreAllNotifications(bool ignore);
bool getIgnoreAllNotifications();
bool isVisibleByRules(LLNotificationPtr pNotification);
private:
// we're a singleton, so we don't have a public constructor
LLNotifications();
/*virtual*/ void initSingleton();
void loadPersistentNotifications();
bool expirationFilter(LLNotificationPtr pNotification);
bool expirationHandler(const LLSD& payload);
bool uniqueFilter(LLNotificationPtr pNotification);
bool uniqueHandler(const LLSD& payload);
bool failedUniquenessTest(const LLSD& payload);
LLNotificationChannelPtr pHistoryChannel;
LLNotificationChannelPtr pExpirationChannel;
TemplateMap mTemplates;
VisibilityRuleList mVisibilityRules;
std::string mFileName;
LLNotificationMap mUniqueNotifications;
typedef std::map<std::string, std::string> GlobalStringMap;
GlobalStringMap mGlobalStrings;
bool mIgnoreAllNotifications;
boost::scoped_ptr<LLNotificationsListener> mListener;
std::vector<LLNotificationChannelPtr> mDefaultChannels;
};
/**
* Abstract class for postponed notifications.
* Provides possibility to add notification after specified by id avatar or group will be
* received from cache name. The object of this type automatically well be deleted
* by cleanup method after respond will be received from cache name.
*
* To add custom postponed notification to the notification system client should:
* 1 create class derived from LLPostponedNotification;
* 2 call LLPostponedNotification::add method;
*/
class LLPostponedNotification
{
public:
/**
* Performs hooking cache name callback which will add notification to notifications system.
* Type of added notification should be specified by template parameter T
* and non-private derived from LLPostponedNotification class,
* otherwise compilation error will occur.
*/
template<class T>
static void add(const LLNotification::Params& params,
const LLUUID& id, bool is_group)
{
// upcast T to the base type to restrict T derivation from LLPostponedNotification
LLPostponedNotification* thiz = new T();
thiz->mParams = params;
// Avoid header file dependency on llcachename.h
thiz->lookupName(id, is_group);
}
private:
void lookupName(const LLUUID& id, bool is_group);
// only used for groups
void onGroupNameCache(const LLUUID& id, const std::string& full_name, bool is_group);
// only used for avatars
void fetchAvatarName(const LLUUID& id);
void onAvatarNameCache(const LLUUID& agent_id, const LLAvatarName& av_name);
// used for both group and avatar names
void finalizeName(const std::string& name);
void cleanup()
{
delete this;
}
protected:
LLPostponedNotification()
: mParams(),
mName(),
mAvatarNameCacheConnection()
{}
virtual ~LLPostponedNotification()
{
if (mAvatarNameCacheConnection.connected())
{
mAvatarNameCacheConnection.disconnect();
}
}
/**
* Abstract method provides possibility to modify notification parameters and
* will be called after cache name retrieve information about avatar or group
* and before notification will be added to the notification system.
*/
virtual void modifyNotificationParams() = 0;
LLNotification::Params mParams;
std::string mName;
boost::signals2::connection mAvatarNameCacheConnection;
};
// Stores only persistent notifications.
// Class users can use connectChanged() to process persistent notifications
// (see LLNotificationStorage for example).
class LLPersistentNotificationChannel : public LLNotificationChannel
{
LOG_CLASS(LLPersistentNotificationChannel);
public:
LLPersistentNotificationChannel()
: LLNotificationChannel("Persistent", "Visible", ¬ificationFilter)
{
}
typedef std::vector<LLNotificationPtr> history_list_t;
history_list_t::iterator beginHistory() { sortHistory(); return mHistory.begin(); }
history_list_t::iterator endHistory() { return mHistory.end(); }
private:
struct sortByTime
{
S32 operator ()(const LLNotificationPtr& a, const LLNotificationPtr& b)
{
return a->getDate() < b->getDate();
}
};
void sortHistory()
{
std::sort(mHistory.begin(), mHistory.end(), sortByTime());
}
// The channel gets all persistent notifications except those that have been canceled
static bool notificationFilter(LLNotificationPtr pNotification)
{
bool handle_notification = false;
handle_notification = pNotification->isPersistent()
&& !pNotification->isCancelled();
return handle_notification;
}
void onAdd(LLNotificationPtr p)
{
mHistory.push_back(p);
}
std::vector<LLNotificationPtr> mHistory;
};
#endif//LL_LLNOTIFICATIONS_H
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