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dbus-1-tqt/tqdbusdatalist.h

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/* qdbusdatalist.h list of DBUS data transport type
*
* Copyright (C) 2007 Kevin Krammer <kevin.krammer@gmx.at>
*
* Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*/
#ifndef TQDBUSDATALIST_H
#define TQDBUSDATALIST_H
#include "tqdbusdata.h"
template <typename T> class TQValueList;
class TQT_DBusObjectPath;
class TQT_DBusVariant;
class TQString;
class TQStringList;
/**
* @brief Class to transport lists of D-Bus data types
*
* \note while the D-Bus data type is actually called @c array this bindings
* use the term @c list since the behavior and characteristics of the
* implementation is more list like.
*
* There are basically two ways to create TQT_DBusDataList objects:
* - non-empty from content
* - empty by specifying the desired element type
*
* Example for creating a filled list from content
* @code
* TQValueList<TQ_INT16> intList;
* list << 2 << 3 << 5 << 7;
*
* TQT_DBusDataList dbusList(intList);
* TQT_DBusData data = TQT_DBusData::fromList(dbusList);
*
* // or even shorter, using implicit conversion
* TQT_DBusData other = TQT_DBusData::fromList(intList);
* @endcode
*
* Example for creating an empty list
* @code
* // empty list for a simple type
* TQT_DBusDataList list(TQT_DBusData::Double);
*
* // empty list for a list of string lists
* TQT_DBusData elementType = TQT_DBusData::fromList(TQT_DBusDataList(TQT_DBusData::String));
* TQT_DBusDataList outerList(elementType);
* @endcode
*
* @see TQT_DBusDataMap
*/
class TQDBUS_EXPORT TQT_DBusDataList
{
public:
/**
* @brief Creates an empty and invalid list
*
* @see TQT_DBusData::Invalid
*/
TQT_DBusDataList();
/**
* @brief Creates an empty list with the given simple type for elements
*
* The given type has be one of the non-container types, i.e. any other than
* TQT_DBusData::Map, TQT_DBusData::List or TQT_DBusData::Struct
*
* For creating a list with elements which are containers themselves, use
* TQT_DBusDataList(const TQT_DBusData&);
*
* @param simpleItemType the type of the elements in the new list
*/
explicit TQT_DBusDataList(TQT_DBusData::Type simpleItemType);
/**
* @brief Creates an empty list with the given container type for elements
*
* For creating a list with simple elements you can also use
* TQT_DBusDataList(TQT_DBusData::Type);
*
* @param containerItemType the type of the elements in the new list
*
* @see hasContainerItemType()
*/
explicit TQT_DBusDataList(const TQT_DBusData& containerItemType);
/**
* @brief Creates a list from the given @p other list
*
* This behaves basically like copying a TQValueList through its copy
* constructor, i.e. no value are actually copied at this time.
*
* @param other the other list object to copy from
*/
TQT_DBusDataList(const TQT_DBusDataList& other);
/**
* @brief Creates a list from the given TQValueList of TQT_DBusData objects
*
* If the @p other list is empty, this will behave like TQT_DBusDataList(),
* i.e. create an empty and invalid list object.
*
* Type information for the list object, i.e. element type and, if applicable,
* container item type, will be derived from the @p other list's elements.
*
* \warning if the elements of the @p other list do not all have the same
* type, the list object will also be empty and invalid
*
* @param other the TQValueList of TQT_DBusData objects to copy from
*
* @see toTQValueList()
*/
TQT_DBusDataList(const TQValueList<TQT_DBusData>& other);
/**
* @brief Creates a list from the given TQValueList of boolean values
*
* Type information for the list object will be set to TQT_DBusData::Bool
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::Bool
*
* @param other the TQValueList of boolean values to copy from
*
* @see toBoolList()
*/
TQT_DBusDataList(const TQValueList<bool>& other);
/**
* @brief Creates a list from the given TQValueList of byte (unsigned char) values
*
* Type information for the list object will be set to TQT_DBusData::Byte
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::Byte
*
* @param other the TQValueList of byte (unsigned char) values to copy from
*
* @see toByteList()
*/
TQT_DBusDataList(const TQValueList<TQ_UINT8>& other);
/**
* @brief Creates a list from the given TQValueList of signed 16-bit integer values
*
* Type information for the list object will be set to TQT_DBusData::Int16
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::Int16
*
* @param other the TQValueList of signed 16-bit integer values to copy from
*
* @see toInt16List()
*/
TQT_DBusDataList(const TQValueList<TQ_INT16>& other);
/**
* @brief Creates a list from the given TQValueList of unsigned 16-bit integer values
*
* Type information for the list object will be set to TQT_DBusData::UInt16
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::UInt16
*
* @param other the TQValueList of unsigned 16-bit integer values to copy from
*
* @see toUInt16List()
*/
TQT_DBusDataList(const TQValueList<TQ_UINT16>& other);
/**
* @brief Creates a list from the given TQValueList of signed 32-bit integer values
*
* Type information for the list object will be set to TQT_DBusData::Int32
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::Int32
*
* @param other the TQValueList of signed 32-bit integer values to copy from
*
* @see toInt32List()
*/
TQT_DBusDataList(const TQValueList<TQ_INT32>& other);
/**
* @brief Creates a list from the given TQValueList of unsigned 32-bit integer values
*
* Type information for the list object will be set to TQT_DBusData::UInt16
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::UInt32
*
* @param other the TQValueList of unsigned 32-bit integer values to copy from
*
* @see toUInt32List()
*/
TQT_DBusDataList(const TQValueList<TQ_UINT32>& other);
/**
* @brief Creates a list from the given TQValueList of signed 64-bit integer values
*
* Type information for the list object will be set to TQT_DBusData::Int64
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::Int64
*
* @param other the TQValueList of signed 64-bit integer values to copy from
*
* @see toInt64List()
*/
TQT_DBusDataList(const TQValueList<TQ_INT64>& other);
/**
* @brief Creates a list from the given TQValueList of unsigned 64-bit integer values
*
* Type information for the list object will be set to TQT_DBusData::UInt64
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::UInt64
*
* @param other the TQValueList of unsigned 64-bit integer values to copy from
*
* @see toUInt64List()
*/
TQT_DBusDataList(const TQValueList<TQ_UINT64>& other);
/**
* @brief Creates a list from the given TQValueList of double values
*
* Type information for the list object will be set to TQT_DBusData::Double
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::Double
*
* @param other the TQValueList of double values to copy from
*
* @see toDoubleList()
*/
TQT_DBusDataList(const TQValueList<double>& other);
/**
* @brief Creates a list from the given TQValueList of TQT_DBusVariant values
*
* Type information for the list object will be set to TQT_DBusData::Variant
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::Variant
*
* @param other the TQValueList of variant values to copy from
*
* @see toVariantList()
*/
TQT_DBusDataList(const TQValueList<TQT_DBusVariant>& other);
/**
* @brief Creates a list from the given TQStringList's values
*
* Type information for the list object will be set to TQT_DBusData::String
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::String
*
* @param other the TQStringList to copy from
*
* @see toTQStringList()
*/
TQT_DBusDataList(const TQStringList& other);
/**
* @brief Creates a list from the given TQValueList of object path values
*
* Type information for the list object will be set to TQT_DBusData::ObjectPath
* also when the @p other list is empty, i.e. this allows to create an
* empty but valid list object, comparable to using
* TQT_DBusDataList(TQT_DBusData::Type) with TQT_DBusData::ObjectPath
*
* @param other the TQValueList of object path values to copy from
*
* @see toObjectPathList()
*/
TQT_DBusDataList(const TQValueList<TQT_DBusObjectPath>& other);
/**
* @brief Destroys the list object
*/
~TQT_DBusDataList();
/**
* @brief Copies from the given @p other list
*
* This behaves basically like copying a TQValueList through its assignment
* operator, i.e. no value are actually copied at this time.
*
* @param other the other list object to copy from
*
* @return a reference to this list object
*/
TQT_DBusDataList& operator=(const TQT_DBusDataList& other);
/**
* @brief Copies from the given @p other list
*
* This behaves basically like copying a TQValueList through its assignment
* operator, i.e. no value are actually copied at this time.
*
* \warning the elements of the given @p other list have to be of the same
* type. If they aren't this list's content will cleared and the
* type will be set to TQT_DBusData::Invalid
*
* @param other the other list object to copy from
*
* @return a reference to this list object
*/
TQT_DBusDataList& operator=(const TQValueList<TQT_DBusData>& other);
/**
* @brief Copies from the given @p other list
*
* Convenience overload as TQStringList is a very common data type in
* TQt and D-Bus methods also use "arrays of strings" quite often.
*
* The list object's type will be set to TQT_DBusData::String. If the object
* previously had a container as its element type, this will be reset, i.e.
* hasContainerItemType() will return @c false
*
* @param other the stringlist to copy from
*
* @return a reference to this list object
*/
TQT_DBusDataList& operator=(const TQStringList& other);
/**
* @brief Returns the element type of the list object
*
* @return one of the values of the TQT_DBusData#Type enum
*
* @see hasContainerItemType()
* @see containerItemType()
*/
TQT_DBusData::Type type() const;
/**
* @brief Checks whether the element type is a data container itself
*
* If the elements of the list are containers as well, this will return
* @c true
* In this case containerItemType() will return a prototype for such a
* container.
*
* @return @c true if the element type is either TQT_DBusData::Map,
* TQT_DBusData::List or TQT_DBusData::Struct, otherwise @c false
*
* @see TQT_DBusDataList(const TQT_DBusData&)
*/
bool hasContainerItemType() const;
/**
* @brief Returns a container prototype for the list's element type
*
* Lists which have containers as their elements, i.e. hasContainerItemType()
* returns @c true this will actually specify the details for the use
* container, i.e. the returned data object can be queried for type and
* possible further subtypes.
*
* @return a data object detailing the element type or an invalid data object
* if the list does not have a container as its element type
*
* @see TQT_DBusDataList(const TQT_DBusData&);
* @see type()
* @see TQT_DBusData::Invalid
*/
TQT_DBusData containerItemType() const;
/**
* @brief Checks whether this list object has a valid element type
*
* This is equal to checking type() for not being TQT_DBusData::Invalid
*
* @return @c true if the list object is valid, otherwise @c false
*/
inline bool isValid() const { return type() != TQT_DBusData::Invalid; }
/**
* @brief Checks whether this list object has any elements
*
* @return @c true if there are no elements in this list, otherwise @c false
*
* @see count()
*/
bool isEmpty() const;
/**
* @brief Returns the number of elements of this list object
*
* @return the number of elements
*
* @see isEmpty()
*/
uint count() const;
/**
* @brief Checks whether the given @p other list is equal to this one
*
* Two lists are considered equal when they have the same type (and same
* container item type if the have one) and the element lists are equal
* as well.
*
* @param other the other list object to compare with
*
* @return @c true if the lists are equal, otherwise @c false
*
* @see TQT_DBusData::operator==()
*/
bool operator==(const TQT_DBusDataList& other) const;
/**
* @brief Checks whether the given @p other list is different from this one
*
* Two lists are considered different when they have the different type (or
* different container item type if the have one) or the element lists are
* equal are different.
*
* @param other the other list object to compare with
*
* @return @c true if the lists are different, otherwise @c false
*
* @see TQT_DBusData::operator!=()
*/
bool operator!=(const TQT_DBusDataList& other) const;
/**
* @brief Clears the list
*
* Type and, if applicable, container element type will stay untouched.
*/
void clear();
/**
* @brief Appends a given value to the list
*
* Basically works like the respective TQValueList operator, but checks if
* type of the new value matches the type of the list.
* Lists that are invalid will accept any new type and will then be
* typed accordingly.
*
* If @p data is invalid itself, it will not be appended at any time.
*
* \note the more common use case is to work with a TQValueList and then
* use the respective constructor to create the TQT_DBusDataList object
*
* @param data the data item to append to the list
*
* @return a reference to this list object
*/
TQT_DBusDataList& operator<<(const TQT_DBusData& data);
/**
* @brief Converts the list object into a TQValueList with TQT_DBusData elements
*
* @return the values of the list object as a TQValueList
*/
TQValueList<TQT_DBusData> toTQValueList() const;
/**
* @brief Tries to get the list object's elements as a TQStringList
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::String.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::String)
*
* @return a TQStringList containing the list object's string elements or
* an empty list when converting fails
*
* @see toStringList()
* @see TQT_DBusData::toString()
*/
TQStringList toTQStringList(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of bool
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::Bool.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::Bool)
*
* @return a TQValueList of bool containing the list object's boolean
* elements or an empty list when converting fails
*
* @see TQT_DBusData::toBool()
*/
TQValueList<bool> toBoolList(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQ_UINT8
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::Byte.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::Byte)
*
* @return a TQValueList of TQ_UINT8 containing the list object's byte
* elements or an empty list when converting fails
*
* @see TQT_DBusData::toByte()
*/
TQValueList<TQ_UINT8> toByteList(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQ_INT16
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::Int16.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::Int16)
*
* @return a TQValueList of TQ_INT16 containing the list object's
* signed 16-bit integer elements or an empty list when converting
* fails
*
* @see TQT_DBusData::toInt16()
*/
TQValueList<TQ_INT16> toInt16List(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQ_UINT16
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::UInt16.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::UInt16)
*
* @return a TQValueList of TQ_UINT16 containing the list object's
* unsigned 16-bit integer elements or an empty list when converting
* fails
*
* @see TQT_DBusData::toUInt16()
*/
TQValueList<TQ_UINT16> toUInt16List(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQ_INT32
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::Int32.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::Int32)
*
* @return a TQValueList of TQ_INT32 containing the list object's
* signed 32-bit integer elements or an empty list when converting
* fails
*
* @see TQT_DBusData::toInt32()
*/
TQValueList<TQ_INT32> toInt32List(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQ_UINT32
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::UInt32.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::UInt32)
*
* @return a TQValueList of TQ_UINT32 containing the list object's
* unsigned 32-bit integer elements or an empty list when converting
* fails
*
* @see TQT_DBusData::toUInt32()
*/
TQValueList<TQ_UINT32> toUInt32List(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQ_INT64
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::Int64.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::Int64)
*
* @return a TQValueList of TQ_INT64 containing the list object's
* signed 64-bit integer elements or an empty list when converting
* fails
*
* @see TQT_DBusData::toInt64()
*/
TQValueList<TQ_INT64> toInt64List(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQ_UINT64
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::UInt64.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::UInt64)
*
* @return a TQValueList of TQ_UINT64 containing the list object's
* unsigned 64-bit integer elements or an empty list when converting
* fails
*
* @see TQT_DBusData::toUInt64()
*/
TQValueList<TQ_UINT64> toUInt64List(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of double
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::Double.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::Double)
*
* @return a TQValueList of double containing the list object's double
* elements or an empty list when converting fails
*
* @see TQT_DBusData::toDouble()
*/
TQValueList<double> toDoubleList(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQString
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::String, see also toTQStringList().
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::String)
*
* @return a TQValueList of TQString containing the list object's string
* elements or an empty list when converting fails
*
* @see TQT_DBusData::toString()
*/
TQValueList<TQString> toStringList(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of object paths
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::ObjectPath)
*
* @return a TQValueList of object paths containing the list object's object path
* elements or an empty list when converting fails
*
* @see TQT_DBusData::toObjectPath()
*/
TQValueList<TQT_DBusObjectPath> toObjectPathList(bool* ok = 0) const;
/**
* @brief Tries to get the list object's elements as a TQValueList of TQT_DBusVariant
*
* This is a convenience overload for the case when the list is of
* type TQT_DBusData::Variant.
*
* @param ok optional pointer to a bool variable to store the
* success information in, i.e. will be set to @c true on success
* and to @c false if the conversion failed (not of type
* TQT_DBusData::Variant)
*
* @return a TQValueList of TQT_DBusVariant containing the list object's
* TQT_DBusVariant elements or an empty list when converting fails
*
* @see TQT_DBusData::toVariant()
*/
TQValueList<TQT_DBusVariant> toVariantList(bool* ok = 0) const;
private:
class Private;
Private* d;
};
#endif