libzypp 17.37.10

zypp::ProgressData Class Reference

Maintain [min,max] and counter (value) for progress counting. More...

`#include <zypp-core/ui/progressdata.h>`

Inheritance diagram for zypp::ProgressData:

## Classes
class | Data

## Public Types
using | value_type = long long
using | ReceiverFnc = function<bool (const ProgressData &)>
| Most simple version of progress reporting The percentage in most cases.

## Public Member Functions
| ProgressData ()
| Ctor no range [0,0](0).
| ProgressData (value_type max_r)
| Ctor [0,max](0).
| ProgressData (value_type min_r, value_type max_r)
| Ctor [min,max](min).
| ProgressData (value_type min_r, value_type max_r, value_type val_r)
| Ctor [min,max](val).
| ~ProgressData ()
void | min (value_type min_r)
| Set new `min` value.
void | max (value_type max_r)
| Set new `max` value.
void | noRange ()
| Set no range [0,0].
void | range (value_type max_r)
| Set new [0,max].
void | range (value_type min_r, value_type max_r)
| Set new [min,max].
void | name (const std::string &name_r)
| Set counter name.
void | sendTo (const ReceiverFnc &fnc_r)
| Set ReceiverFnc.
void | noSend ()
| Set no ReceiverFnc.
Progress reporting.
These methods may actually cause a progress report to be sent. All methods return `bool`, because a progress receiver may return `false` to indicate the desire to abort the pending action. The incident is logged, but it's finally up to the caller to honor this.
bool | set (value_type val_r)
| Set new counter `value`.
bool | set (const ProgressData &rhs)
| Set range and counter from an other ProgressData.
bool | incr (value_type val_r=1)
| Increment counter `value` (default by 1).
bool | decr (value_type val_r=1)
| Decrement counter `value` (default by 1).
bool | toMin ()
| Set counter value to current `min` value.
bool | toMax ()
| Set counter value to current `max` value (unless no range).
bool | tick ()
| Leave counter value unchanged (still alive).
Public Member Functions inherited from zypp::base::ProvideNumericId< ProgressData, unsigned >
unsigned | numericId () const

## Private Types
enum | State { INIT , RUN , END }

## Related Symbols
(Note that these are not member symbols.)
std::ostream & | operator<< (std::ostream &str, const ProgressData &obj)
| Stream output.
ProgressData | makeProgressData (const InputStream &input_r)
| Setup from InputStream.

## Progress receiving.
RWCOW_pointer< Data > | _d
| Pointer to data.
value_type | min () const
value_type | max () const
value_type | val () const
bool | hasRange () const
bool | reportPercent () const
bool | reportAlive () const
value_type | reportValue () const
const std::string & | name () const
const ReceiverFnc & | receiver () const
bool | finalReport () const
bool | report ()
| Send report if necessary.

## Additional Inherited Members
Protected Member Functions inherited from zypp::base::ProvideNumericId< ProgressData, unsigned >
| ProvideNumericId ()
| Default ctor.
ProvideNumericId & | operator= (const ProvideNumericId &)
| Assign.
| ~ProvideNumericId ()
| Dtor.

## Detailed Description

Maintain [min,max] and counter (value) for progress counting.

This class should provide everything the producer of progress data needs. As a convention, a zero sizes range indicates that you are just able to send 'still alive' triggers.

The counter should be updated in reasonable intervals. Don't mind whether the counter value actually increased or not. ProgressData will recognize your triggers and knows when to actually send notification to a consumer.

Each ProgressData object provides a unique numeric id and you may assign it a name.

bool exampleReceiver( const ProgressData & ticks_r )
{
DBG << "got ->" << ticks_r.reportValue() << " (" << ticks_r.val() << ")" << endl;
return( ticks_r.val() <= 100 ); // Abort if ( val > 100 )
}
class Example
{
public:
Example( const ProgressData::ReceiverFnc & fnc_r = ProgressData::ReceiverFnc() )
: _fnc( fnc_r )
{}
void SendTo( const ProgressData::ReceiverFnc & fnc_r )
{ _fnc = fnc_r; }
public:
void action()
{
ProgressData tics( 10 ); // Expect range 0 -> 10
tics.name( "test ticks" ); // Some arbitrary name
tics.sendTo( _fnc ); // Send reports to _fnc
tics.toMin(); // start sending min (0)
for ( int i = 0; i < 10; ++i )
{
if ( ! tics.set( i ) )
return; // user requested abort
}
tics.toMax(); // take care 100% are reported on success
}
void action2()
{
ProgressData tics; // Just send 'still alive' messages
tics.name( "test ticks" ); // Some arbitrary name
tics.sendTo( _fnc ); // Send reports to _fnc
tics.toMin(); // start sending min (0)
for ( int i = 0; i < 10; ++i )
{
if ( ! tics.set( i ) )
return; // user requested abort
}
tics.toMax(); //
}
private:
ProgressData::ReceiverFnc _fnc;
};
zypp::ProgressData::reportValue
value_type reportValue() const
Definition progressdata.h:322
zypp::ProgressData::ReceiverFnc
function< bool(const ProgressData &)> ReceiverFnc
Most simple version of progress reporting The percentage in most cases.
Definition progressdata.h:140
zypp::ProgressData::ProgressData
ProgressData()
Ctor no range [0,0](0).
Definition progressdata.h:174
zypp::ProgressData::val
value_type val() const
Definition progressdata.h:298
DBG
#define DBG
Definition Logger.h:99
Example t( exampleReceiver );
DBG << "Reporting %:" << endl;
t.action();
DBG << "Reporting 'still alive':" << endl;
t.action2();
Reporting %:
got ->0 (0)
got ->10 (1)
got ->20 (2)
got ->30 (3)
got ->40 (4)
got ->50 (5)
got ->60 (6)
got ->70 (7)
got ->80 (8)
got ->90 (9)
got ->100 (10)
got ->100 (10)
Reporting 'still alive':
got ->-1 (0)
got ->-1 (9)

The different ammount of triggers is due to different rules for sending percent or 'still alive' messages.

Definition at line 131 of file progressdata.h.

## Member Typedef Documentation

## ◆ value_type

using zypp::ProgressData::value_type = long long

Definition at line 134 of file progressdata.h.

## ◆ ReceiverFnc

using zypp::ProgressData::ReceiverFnc = function<bool (const ProgressData &)>

Most simple version of progress reporting The percentage in most cases.

Sometimes just keepalive. `sender` ProgressData object who sends the progress info ``

Definition at line 140 of file progressdata.h.

## Member Enumeration Documentation

## ◆ State

enum zypp::ProgressData::State
| private

Enumerator
INIT |
RUN |
END |

Definition at line 143 of file progressdata.h.

## Constructor & Destructor Documentation

## ◆ ProgressData() [1/4]

zypp::ProgressData::ProgressData | ( |  | ) |
| inline

Ctor no range [0,0](0).

Definition at line 174 of file progressdata.h.

## ◆ ProgressData() [2/4]

zypp::ProgressData::ProgressData | ( | value_type | max_r | ) |
| inline

Ctor [0,max](0).

Definition at line 179 of file progressdata.h.

## ◆ ProgressData() [3/4]

zypp::ProgressData::ProgressData | ( | value_type | min_r,
|  | value_type | max_r )
| inline

Ctor [min,max](min).

Definition at line 184 of file progressdata.h.

## ◆ ProgressData() [4/4]

zypp::ProgressData::ProgressData | ( | value_type | min_r,
|  | value_type | max_r,
|  | value_type | val_r )
| inline

Ctor [min,max](val).

Definition at line 189 of file progressdata.h.

## ◆ ~ProgressData()

zypp::ProgressData::~ProgressData | ( |  | ) |
| inline

Definition at line 193 of file progressdata.h.

## Member Function Documentation

## ◆ min() [1/2]

void zypp::ProgressData::min | ( | value_type | min_r | ) |
| inline

Set new `min` value.

Definition at line 204 of file progressdata.h.

## ◆ max() [1/2]

void zypp::ProgressData::max | ( | value_type | max_r | ) |
| inline

Set new `max` value.

Definition at line 208 of file progressdata.h.

## ◆ noRange()

void zypp::ProgressData::noRange | ( |  | ) |
| inline

Set no range [0,0].

Definition at line 212 of file progressdata.h.

## ◆ range() [1/2]

void zypp::ProgressData::range | ( | value_type | max_r | ) |
| inline

Set new [0,max].

Definition at line 216 of file progressdata.h.

## ◆ range() [2/2]

void zypp::ProgressData::range | ( | value_type | min_r,
|  | value_type | max_r )
| inline

Set new [min,max].

Definition at line 220 of file progressdata.h.

## ◆ name() [1/2]

void zypp::ProgressData::name | ( | const std::string & | name_r | ) |
| inline

Set counter name.

Definition at line 225 of file progressdata.h.

## ◆ sendTo()

void zypp::ProgressData::sendTo | ( | const ReceiverFnc & | fnc_r | ) |
| inline

Set ReceiverFnc.

Definition at line 229 of file progressdata.h.

## ◆ noSend()

void zypp::ProgressData::noSend | ( |  | ) |
| inline

Set no ReceiverFnc.

Definition at line 233 of file progressdata.h.

## ◆ set() [1/2]

bool zypp::ProgressData::set | ( | value_type | val_r | ) |
| inline

Set new counter `value`.

Definition at line 249 of file progressdata.h.

## ◆ set() [2/2]

bool zypp::ProgressData::set | ( | const ProgressData & | rhs | ) |
| inline

Set range and counter from an other ProgressData.

Definition at line 256 of file progressdata.h.

## ◆ incr()

bool zypp::ProgressData::incr | ( | value_type | val_r = 1 | ) |
| inline

Increment counter `value` (default by 1).

Definition at line 264 of file progressdata.h.

## ◆ decr()

bool zypp::ProgressData::decr | ( | value_type | val_r = 1 | ) |
| inline

Decrement counter `value` (default by 1).

Definition at line 268 of file progressdata.h.

## ◆ toMin()

bool zypp::ProgressData::toMin | ( |  | ) |
| inline

Set counter value to current `min` value.

Definition at line 272 of file progressdata.h.

## ◆ toMax()

bool zypp::ProgressData::toMax | ( |  | ) |
| inline

Set counter value to current `max` value (unless no range).

Definition at line 276 of file progressdata.h.

## ◆ tick()

bool zypp::ProgressData::tick | ( |  | ) |
| inline

Leave counter value unchanged (still alive).

Definition at line 280 of file progressdata.h.

## ◆ min() [2/2]

value_type zypp::ProgressData::min | ( |  | ) | const
| inline

Returns
  Current `min` value.

Definition at line 290 of file progressdata.h.

## ◆ max() [2/2]

value_type zypp::ProgressData::max | ( |  | ) | const
| inline

Returns
  Current `max` value.

Definition at line 294 of file progressdata.h.

## ◆ val()

value_type zypp::ProgressData::val | ( |  | ) | const
| inline

Returns
  Current counter `value`.

Definition at line 298 of file progressdata.h.

## ◆ hasRange()

bool zypp::ProgressData::hasRange | ( |  | ) | const
| inline

Returns
  Whether [min,max] defines a nonempty range.

Definition at line 302 of file progressdata.h.

## ◆ reportPercent()

bool zypp::ProgressData::reportPercent | ( |  | ) | const
| inline

Returns
  Whether reportValue will return a percent value. Same as hasRange.

See also
  reportAlive

Definition at line 309 of file progressdata.h.

## ◆ reportAlive()

bool zypp::ProgressData::reportAlive | ( |  | ) | const
| inline

Returns
  Whether reportValue always returns -1, because we trigger 'still alive' messages. I.e. hasrange is `false`.

See also
  reportPercent

Definition at line 316 of file progressdata.h.

## ◆ reportValue()

value_type zypp::ProgressData::reportValue | ( |  | ) | const
| inline

Returns
  Either a a percent value or -1.

See also
  reportPercent and reportAlive.

Definition at line 322 of file progressdata.h.

## ◆ name() [2/2]

const std::string & zypp::ProgressData::name | ( |  | ) | const
| inline

Returns
  The counters name.

Definition at line 326 of file progressdata.h.

## ◆ receiver()

const ReceiverFnc & zypp::ProgressData::receiver | ( |  | ) | const
| inline

Returns
  The ReceiverFnc.

Definition at line 330 of file progressdata.h.

## ◆ finalReport()

bool zypp::ProgressData::finalReport | ( |  | ) | const
| inline

Returns
  Return `true` if this is the final report sent by the ProgressData dtor.

Definition at line 336 of file progressdata.h.

## ◆ report()

bool zypp::ProgressData::report | ( |  | ) |
| private

Send report if necessary.

Definition at line 33 of file progressdata.cc.

## Friends And Related Symbol Documentation

## ◆ operator<<()

std::ostream & operator<< | ( | std::ostream & | str,
|  | const ProgressData & | obj )
| related

Stream output.

Definition at line 106 of file progressdata.cc.

## ◆ makeProgressData()

ProgressData makeProgressData | ( | const InputStream & | input_r | ) |
| related

Setup from InputStream.

Definition at line 124 of file progressdata.cc.

## Member Data Documentation

## ◆ _d

RWCOW_pointer<Data> zypp::ProgressData::_d
| private

Pointer to data.

Definition at line 346 of file progressdata.h.

The documentation for this class was generated from the following files:

- zypp-core/ui/progressdata.h
- zypp-core/ui/progressdata.cc