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authorVolker Hilsheimer <volker.hilsheimer@nokia.com>2009-07-30 12:47:14 (GMT)
committerVolker Hilsheimer <volker.hilsheimer@nokia.com>2009-07-30 12:49:53 (GMT)
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-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the either Technology Preview License Agreement or the
-** Beta Release License Agreement.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at http://www.qtsoftware.com/contact.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-/*!
- \class Q3PtrVector
- \brief The Q3PtrVector class is a template collection class that
- provides a vector (array).
- \compat
-
- Q3ValueVector is an STL-compatible alternative to this class.
-
- Q3PtrVector is implemented as a template class. Defines a template
- instance Q3PtrVector\<X\> to create a vector that contains pointers
- to X (X*).
-
- A vector is the same as an array. The main difference between
- Q3PtrVector and Q3MemArray is that Q3PtrVector stores pointers to the
- elements, whereas Q3MemArray stores the elements themselves (i.e.
- Q3MemArray is value-based and Q3PtrVector is pointer-based).
-
- Items are added to the vector using insert() or fill(). Items are
- removed with remove(). You can get a pointer to an item at a
- particular index position using at().
-
- Unless otherwise stated, all functions that remove items from the
- vector will also delete the element pointed to if \link
- setAutoDelete() auto-deletion\endlink is enabled. By default,
- auto-deletion is disabled; see setAutoDelete(). This behavior can
- be changed in a subclass by reimplementing the virtual function
- deleteItem().
-
- Functions that compare items (find() and sort() for example) will
- do so using the virtual function compareItems(). The default
- implementation of this function only compares the pointer values.
- Reimplement compareItems() in a subclass to get searching and
- sorting based on the item contents. You can perform a linear
- search for a pointer in the vector using findRef(), or a binary
- search (of a sorted vector) using bsearch(). You can count the
- number of times an item appears in the vector with contains() or
- containsRef().
-
- \sa Q3MemArray
-*/
-
-/*!
- \fn Q3PtrVector::Q3PtrVector()
-
- Constructs a null vector.
-
- \sa isNull()
-*/
-
-/*!
- \fn Q3PtrVector::Q3PtrVector(uint size)
-
- Constructs an vector with room for \a size items. Makes a null
- vector if \a size == 0.
-
- All \a size positions in the vector are initialized to 0.
-
- \sa size(), resize(), isNull()
-*/
-
-/*!
- \fn Q3PtrVector::Q3PtrVector(const Q3PtrVector<type> &v)
-
- Constructs a copy of \a v. Only the pointers are copied (i.e.
- shallow copy).
-*/
-
-/*!
- \fn Q3PtrVector::~Q3PtrVector()
-
- Removes all items from the vector, and destroys the vector itself.
-
- \sa clear()
-*/
-
-/*!
- \fn Q3PtrVector<type> &Q3PtrVector::operator=(const Q3PtrVector<type> &v)
-
- Assigns \a v to this vector and returns a reference to this
- vector.
-
- This vector is first cleared and then all the items from \a v are
- copied into the vector. Only the pointers are copied (i.e. shallow
- copy).
-
- \sa clear()
-*/
-
-/*!
- \fn type **Q3PtrVector::data() const
-
- Returns a pointer to the actual vector data, which is an array of
- type*.
-
- The vector is a null vector if data() == 0 (null pointer).
-
- \sa isNull()
-*/
-
-/*!
- \fn uint Q3PtrVector::size() const
-
- Returns the size of the vector, i.e. the number of vector
- positions. This is also the maximum number of items the vector can
- hold.
-
- The vector is a null vector if size() == 0.
-
- \sa isNull(), resize(), count()
-*/
-
-/*!
- \fn uint Q3PtrVector::count() const
-
- Returns the number of items in the vector. The vector is empty if
- count() == 0.
-
- \sa isEmpty(), size(), isNull()
-*/
-
-/*!
- \fn bool Q3PtrVector::isEmpty() const
-
- Returns true if the vector is empty; otherwise returns false.
-
- \sa count()
-*/
-
-/*!
- \fn bool Q3PtrVector::isNull() const
-
- Returns true if the vector is null; otherwise returns false.
-
- A null vector has size() == 0 and data() == 0.
-
- \sa size()
-*/
-
-/*!
- \fn bool Q3PtrVector::resize(uint size)
-
- Resizes (expands or shrinks) the vector to \a size elements. The
- vector becomes a null vector if \a size == 0.
-
- Any items at position \a size or beyond in the vector are removed.
- New positions are initialized to 0.
-
- Returns true if successful, i.e. if the memory was successfully
- allocated; otherwise returns false.
-
- \sa size(), isNull()
-*/
-
-/*!
- \fn bool Q3PtrVector::insert(uint i, const type *d)
-
- Sets position \a i in the vector to contain the item \a d. \a i
- must be less than size(). Any previous element in position \a i is
- removed.
-
- Returns true if \a i is within range; otherwise returns false.
-
- \sa at()
-*/
-
-/*!
- \fn bool Q3PtrVector::remove(uint i)
-
- Removes the item at position \a i in the vector, if there is one.
- \a i must be less than size().
-
- Returns true if \a i is within range; otherwise returns false.
-
- \sa take(), at()
-*/
-
-/*!
- \fn type* Q3PtrVector::take(uint i)
-
- Returns the item at position \a i in the vector, and removes that
- item from the vector. \a i must be less than size(). If there is
- no item at position \a i, 0 is returned.
-
- Unlike remove(), this function does \e not call deleteItem() for
- the removed item.
-
- \sa remove(), at()
-*/
-
-/*!
- \fn void Q3PtrVector::clear()
-
- Removes all items from the vector, and destroys the vector itself.
-
- The vector becomes a null vector.
-
- \sa isNull()
-*/
-
-/*!
- \fn bool Q3PtrVector::fill(const type *d, int size)
-
- Inserts item \a d in all positions in the vector. Any existing
- items are removed. If \a d is 0, the vector becomes empty.
-
- If \a size >= 0, the vector is first resized to \a size. By
- default, \a size is -1.
-
- Returns true if successful, i.e. \a size is the same as the
- current size, or \a size is larger and the memory has successfully
- been allocated; otherwise returns false.
-
- \sa resize(), insert(), isEmpty()
-*/
-
-/*!
- \fn void Q3PtrVector::sort()
-
- Sorts the items in ascending order. Any empty positions will be
- put last.
-
- Compares items using the virtual function compareItems().
-
- \sa bsearch()
-*/
-
-/*!
- \fn int Q3PtrVector::bsearch(const type* d) const
-
- In a sorted array, finds the first occurrence of \a d using a
- binary search. For a sorted array, this is generally much faster
- than find(), which performs a linear search.
-
- Returns the position of \a d, or -1 if \a d could not be found. \a
- d must not be 0.
-
- Compares items using the virtual function compareItems().
-
- \sa sort(), find()
-*/
-
-
-/*!
- \fn int Q3PtrVector::findRef(const type *d, uint i) const
-
- Finds the first occurrence of the item pointer \a d in the vector
- using a linear search. The search starts at position \a i, which
- must be less than size(). \a i is by default 0; i.e. the search
- starts at the start of the vector.
-
- Returns the position of \a d, or -1 if \a d could not be found.
-
- This function does \e not use compareItems() to compare items.
-
- Use the much faster bsearch() to search a sorted vector.
-
- \sa find(), bsearch()
-*/
-
-/*!
- \fn int Q3PtrVector::find(const type *d, uint i) const
-
- Finds the first occurrence of item \a d in the vector using a
- linear search. The search starts at position \a i, which must be
- less than size(). \a i is by default 0; i.e. the search starts at
- the start of the vector.
-
- Returns the position of \a d, or -1 if \a d could not be found.
-
- Compares items using the virtual function compareItems().
-
- Use the much faster bsearch() to search a sorted vector.
-
- \sa findRef(), bsearch()
-*/
-
-
-/*!
- \fn uint Q3PtrVector::containsRef(const type *d) const
-
- Returns the number of occurrences of the item pointer \a d in the
- vector.
-
- This function does \e not use compareItems() to compare items.
-
- \sa findRef()
-*/
-
-/*!
- \fn uint Q3PtrVector::contains(const type *d) const
-
- Returns the number of occurrences of item \a d in the vector.
-
- Compares items using the virtual function compareItems().
-
- \sa containsRef()
-*/
-
-/*!
- \fn type *Q3PtrVector::operator[](int i) const
-
- Returns the item at position \a i, or 0 if there is no item at
- that position. \a i must be less than size().
-
- Equivalent to at(\a i).
-
- \sa at()
-*/
-
-/*!
- \fn type *Q3PtrVector::at(uint i) const
-
- Returns the item at position \a i, or 0 if there is no item at
- that position. \a i must be less than size().
-*/
-
-
-/*!
- \fn void Q3PtrVector::toList(Q3GList *list) const
-
- \internal
-
- Copies all items in this vector to the list \a list. \a list is
- first cleared and then all items are appended to \a list.
-
- \sa Q3PtrList, Q3PtrStack, Q3PtrQueue
-*/
-
-/*!
- \fn int Q3PtrVector::compareItems(Q3PtrCollection::Item d1,
- Q3PtrCollection::Item d2)
-
- This virtual function compares two list items.
-
- Returns:
- \list
- \i zero if \a d1 == \a d2
- \i nonzero if \a d1 != \a d2
- \endlist
-
- This function returns \e int rather than \e bool so that
- reimplementations can return one of three values and use it to
- sort by:
- \list
- \i 0 if \a d1 == \a d2
- \i \> 0 (positive integer) if \a d1 \> \a d2
- \i \< 0 (negative integer) if \a d1 \< \a d2
- \endlist
-
- The sort() and bsearch() functions require compareItems() to be
- implemented as described here.
-
- This function should not modify the vector because some const
- functions call compareItems().
-*/
-
-/*!
- \fn QDataStream& Q3PtrVector::read(QDataStream &s,
- Q3PtrCollection::Item &item)
-
- Reads a vector item, \a item, from the stream \a s and returns a
- reference to the stream.
-
- The default implementation sets \a item to 0.
-
- \sa write()
-*/
-
-/*!
- \fn QDataStream& Q3PtrVector::write(QDataStream &s,
- Q3PtrCollection::Item item) const
-
- Writes a vector item, \a item, to the stream \a s and returns a
- reference to the stream.
-
- The default implementation does nothing.
-
- \sa read()
-*/
-
-/*!
- \fn bool Q3PtrVector::operator==(const Q3PtrVector<type> &v) const
-
- Returns true if this vector and \a v are equal; otherwise returns
- false.
-*/