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/*
* Copyright 2013 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, 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 GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Charles Kerr <charles.kerr@canonical.com>
*/
#ifndef INDICATOR_DATETIME_FORMATTER_H
#define INDICATOR_DATETIME_FORMATTER_H
#include <core/property.h>
#include <core/signal.h>
#include <glib.h>
namespace unity {
namespace indicator {
namespace datetime {
class Clock;
class DateTime;
/***
****
***/
/**
* \brief Provide the strftime() format strings
*
* This mission's been moved out into its own class because there are
* a lot of options and edge cases:
*
* - The default time format can change based on the locale.
*
* - The user's settings can change or completely override the format string.
*
* - The time formats are different on the Phone and Desktop profiles.
*
* - The time format string in the Locations' menuitems uses (mostly)
* the same time format as the header, except for some changes.
*
* - The 'current time' format string in the Locations' menuitems also
* prepends the string 'Yesterday' or 'Today' if it differs from the
* local time, so Formatter needs to have a Clock for its state.
*
* So the Formatter monitors system settings, the current timezone, etc.
* and upate its time format properties appropriately.
*/
class Formatter
{
public:
/** \brief The time format string for the menu header */
core::Property<std::string> headerFormat;
/** \brief The time string for the menu header. (eg, the headerFormat + the clock's time */
core::Property<std::string> header;
/** \brief Signal to denote when the relativeFormat has changed.
When this is emitted, clients will want to rebuild their
menuitems that contain relative time strings
(ie, the Appointments and Locations menuitems) */
core::Signal<> relativeFormatChanged;
/** \brief Generate a relative time format for some time (or time range)
from the current clock's value. For example, a full-day interval
starting at the end of the current clock's day yields "Tomorrow" */
std::string getRelativeFormat(GDateTime* then, GDateTime* then_end=nullptr) const;
protected:
Formatter(const std::shared_ptr<Clock>&);
virtual ~Formatter();
/** \brief Returns true if the current locale prefers 12h display instead of 24h */
static bool is_locale_12h();
static const char* getDefaultHeaderTimeFormat(bool twelvehour, bool show_seconds);
/** \brief Translate the string based on LC_TIME instead of LC_MESSAGES.
The intent of this is to let users set LC_TIME to override
their other locale settings when generating time format string */
static const char* T_(const char * fmt);
private:
Formatter(const Formatter&) =delete;
Formatter& operator=(const Formatter&) =delete;
class Impl;
std::unique_ptr<Impl> p;
};
/**
* \brief A Formatter for the Desktop and DesktopGreeter profiles.
*/
class DesktopFormatter: public Formatter
{
public:
DesktopFormatter(const std::shared_ptr<Clock>&);
~DesktopFormatter();
private:
class Impl;
friend Impl;
std::unique_ptr<Impl> p;
};
/**
* \brief A Formatter for Phone and PhoneGreeter profiles.
*/
class PhoneFormatter: public Formatter
{
public:
PhoneFormatter(const std::shared_ptr<Clock>& clock): Formatter(clock) {
headerFormat.set(getDefaultHeaderTimeFormat(is_locale_12h(), false));
}
};
} // namespace datetime
} // namespace indicator
} // namespace unity
#endif // INDICATOR_DATETIME_CLOCK_H
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