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authorTed Gould <ted@canonical.com>2009-08-18 11:52:09 -0500
committerTed Gould <ted@canonical.com>2009-08-18 11:52:09 -0500
commitba24704988964a1f211e82e87cbe8aca29641979 (patch)
treef2218fc755cf815cfea4249388301fcd7867297b /libindicate/indicator.h
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-/*
-A library to allow applictions to provide simple indications of
-information to be displayed to users of the application through the
-interface shell.
-
-Copyright 2009 Canonical Ltd.
-
-Authors:
- Ted Gould <ted@canonical.com>
-
-This program is free software: you can redistribute it and/or modify it
-under the terms of either or both of the following licenses:
-
-1) the GNU Lesser General Public License version 3, as published by the
-Free Software Foundation; and/or
-2) the GNU Lesser General Public License version 2.1, as published by
-the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranties of
-MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
-PURPOSE. See the applicable version of the GNU Lesser General Public
-License for more details.
-
-You should have received a copy of both the GNU Lesser General Public
-License version 3 and version 2.1 along with this program. If not, see
-<http://www.gnu.org/licenses/>
-*/
-
-#ifndef INDICATE_INDICATOR_H_INCLUDED__
-#define INDICATE_INDICATOR_H_INCLUDED__ 1
-
-#include <glib.h>
-#include <glib-object.h>
-
-G_BEGIN_DECLS
-
-/* Boilerplate */
-#define INDICATE_TYPE_INDICATOR (indicate_indicator_get_type ())
-#define INDICATE_INDICATOR(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), INDICATE_TYPE_INDICATOR, IndicateIndicator))
-#define INDICATE_IS_INDICATOR(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), INDICATE_TYPE_INDICATOR))
-#define INDICATE_INDICATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), INDICATE_TYPE_INDICATOR, IndicateIndicatorClass))
-#define INDICATE_IS_INDICATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), INDICATE_TYPE_INDICATOR))
-#define INDICATE_INDICATOR_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS((object), INDICATE_TYPE_INDICATOR, IndicateIndicatorClass))
-
-/* This is a signal that signals to the indicator that the user
- * has done an action where they'd like this indicator to be
- * displayed. */
-#define INDICATE_INDICATOR_SIGNAL_HIDE "hide"
-#define INDICATE_INDICATOR_SIGNAL_SHOW "show"
-#define INDICATE_INDICATOR_SIGNAL_DISPLAY "user-display"
-#define INDICATE_INDICATOR_SIGNAL_MODIFIED "modified"
-
-typedef struct _IndicateIndicator IndicateIndicator;
-typedef struct _IndicateIndicatorClass IndicateIndicatorClass;
-
-/**
- IndicateIndicator:
-
- The indicator object represents a single item that is shared over the
- indicator bus. This could be something like one IM, one e-mail or
- a single system update. It should be accessed only through its
- accessors.
-*/
-struct _IndicateIndicator {
- GObject parent;
-};
-
-#include "server.h"
-
-/**
- IndicateIndicatorClass:
- @parent_class: Parent class #GObjectClass.
- @hide: Slot for #IndicateIndicator::hide.
- @show: Slot for #IndicateIndicator::show.
- @user_display: Slot for #IndicateIndicator::user-display.
- @modified: Slot for #IndicateIndicator::modified.
- @get_type: Returns a constant string for the type of this indicator.
- Typically gets overridden by subclasses and defines the type of
- the indicator. Is called by indicate_indicator_get_indicator_type().
- @set_property: Called when indicate_indicator_set_property() is called
- and should set the value. While typically it is overridden by
- subclasses they usually handle special properties themselves and
- then call the superclass for storage.
- @get_property: Called when indicate_indicator_get_property() is called
- and should return the value requested. Many times this is left alone.
- @list_properties: Called when indicate_indicator_list_properties() is called
- and returns a list of the properties available. Again this can be
- overridden by subclasses to handle special properties.
-
- All of the functions that are used to modify or change data that is
- in the indicator. Typically gets subclassed by other types of
- indicators, for example #IndicateIndicatorMessages.
-
-*/
-struct _IndicateIndicatorClass {
- GObjectClass parent_class;
-
- void (*hide) (IndicateIndicator * indicator, gpointer data);
- void (*show) (IndicateIndicator * indicator, gpointer data);
- void (*user_display) (IndicateIndicator * indicator, gpointer data);
- void (*modified) (IndicateIndicator * indicator, gchar * property, gpointer data);
-
- const gchar * (*get_type) (IndicateIndicator * indicator);
- void (*set_property) (IndicateIndicator * indicator, const gchar * key, const gchar * data);
- const gchar * (*get_property) (IndicateIndicator * indicator, const gchar * key);
- GPtrArray * (*list_properties) (IndicateIndicator * indicator);
-};
-
-GType indicate_indicator_get_type(void) G_GNUC_CONST;
-
-/* New Indicator Functions */
-IndicateIndicator * indicate_indicator_new (void);
-IndicateIndicator * indicate_indicator_new_with_server (IndicateServer * server);
-
-/* Show and hide this indicator */
-void indicate_indicator_show (IndicateIndicator * indicator);
-void indicate_indicator_hide (IndicateIndicator * indicator);
-
-gboolean indicate_indicator_is_visible (IndicateIndicator * indicator);
-
-/* Define this indicator server */
-void indicate_indicator_set_server (IndicateIndicator * indicator, IndicateServer * server);
-
-/* Every entry has an ID, here's how to get it */
-guint indicate_indicator_get_id (IndicateIndicator * indicator);
-
-/* Every entry has a type. This should be created by the
- * subclass and exported through this pretty function */
-const gchar * indicate_indicator_get_indicator_type (IndicateIndicator * indicator);
-
-void indicate_indicator_user_display (IndicateIndicator * indicator);
-
-/* Properties handling */
-void indicate_indicator_set_property (IndicateIndicator * indicator, const gchar * key, const gchar * data);
-void indicate_indicator_set_property_time (IndicateIndicator * indicator, const gchar * key, GTimeVal * time);
-const gchar * indicate_indicator_get_property (IndicateIndicator * indicator, const gchar * key);
-GPtrArray * indicate_indicator_list_properties (IndicateIndicator * indicator);
-
-/**
- SECTION:indicator
- @short_description: A representation of state for applications
- @stability: Unstable
- @include: libindicate/indicator.h
-
- An indicator is designed to represent a single instance of something
- in your application. So this might be an IM or Email using #IndicateIndicatorMessage
- or any other thing that is a small unit of information to pass on
- to the user.
-
- Indicators make no promises about how they are preceived by the
- user, it's up to the listener to represent them in an intutive and
- visually appealling way. But, what we can do is provide information
- on the indicator to provide enough information for the listener
- to do that.
-
- Mostly this is done through properties. The only property that is
- defined for the base indicator is the 'type' property. And this
- is only available to set by creating a subclass of the
- #IndicateIndicator object. It is assumed that you can look at the
- definitions of the various subtypes to determine which properties
- they support.
-
- It may be that some users don't want to create objects for every
- indicator as it could be a lot of overhead if there are large numbers
- and there is already a data structure representing them all. In that
- case it is recommended that you ignore the #IndicateIndicator object
- tree in general and move to subclassing #IndicateServer directly.
-*/
-
-G_END_DECLS
-
-#endif /* INDICATE_INDICATOR_H_INCLUDED__ */