diff -r 000000000000 -r 1918ee327afb src/qt3support/tools/q3ptrstack.qdoc --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/qt3support/tools/q3ptrstack.qdoc Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,217 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** 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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/*! + \class Q3PtrStack + \brief The Q3PtrStack class is a template class that provides a stack. + \compat + + Q3ValueStack is an STL-compatible alternative to this class. + + Define a template instance Q3PtrStack\ to create a stack that + operates on pointers to X, (X*). + + A stack is a last in, first out (LIFO) structure. Items are added + to the top of the stack with push() and retrieved from the top + with pop(). Use top() to get a reference to the top element + without changing the stack. + + You can control the stack's deletion policy with setAutoDelete(). + + For compatibility with the Q3PtrCollection classes current() and + remove() are provided; they both operate on the top(). + + \sa Q3PtrList Q3PtrQueue +*/ + +/*! + \fn Q3PtrStack::Q3PtrStack () + + Creates an empty stack. +*/ + +/*! + \fn Q3PtrStack::Q3PtrStack (const Q3PtrStack& s) + + Creates a stack by making a shallow copy of another stack \a s. +*/ + +/*! + \fn Q3PtrStack::~Q3PtrStack () + + Destroys the stack. All items will be deleted if autoDelete() is + true. +*/ + +/*! + \fn Q3PtrStack& Q3PtrStack::operator= (const Q3PtrStack& s) + + Sets the contents of this stack by making a shallow copy of + another stack \a s. Elements currently in this stack will be + deleted if autoDelete() is true. +*/ + +/*! + \fn bool Q3PtrStack::isEmpty () const + + Returns true if the stack contains no elements; otherwise returns + false. +*/ + +/*! + \fn void Q3PtrStack::push (const type* d) + + Adds an element \a d to the top of the stack. Last in, first out. +*/ + +/*! + \fn type* Q3PtrStack::pop () + + Removes the top item from the stack and returns it. The stack must + not be empty. +*/ + +/*! + \fn bool Q3PtrStack::remove () + + Removes the top item from the stack and deletes it if autoDelete() + is true. Returns true if there was an item to pop; otherwise + returns false. + + \sa clear() +*/ + +/*! + \fn void Q3PtrStack::clear() + + Removes all items from the stack, deleting them if autoDelete() is + true. + + \sa remove() +*/ + +/*! + \fn uint Q3PtrStack::count() const + + Returns the number of items in the stack. + + \sa isEmpty() +*/ + +/*! + \fn type* Q3PtrStack::top () const + + Returns a pointer to the top item on the stack (most recently + pushed). The stack is not changed. Returns 0 if the stack is + empty. +*/ + +/*! + \fn Q3PtrStack::operator type* ()const + + Returns a pointer to the top item on the stack (most recently + pushed). The stack is not changed. Returns 0 if the stack is + empty. +*/ + +/*! + \fn type* Q3PtrStack::current () const + + Returns a pointer to the top item on the stack (most recently + pushed). The stack is not changed. Returns 0 if the stack is + empty. +*/ + +/*! + \fn bool Q3PtrStack::autoDelete() const + + The same as Q3PtrCollection::autoDelete(). Returns true if + the auto-delete option is set. If the option is set, the + stack auto-deletes its contents. + + \sa setAutoDelete() +*/ + +/*! + \fn void Q3PtrStack::setAutoDelete(bool enable) + + Defines whether this stack auto-deletes its contents. The same as + Q3PtrCollection::setAutoDelete(). If \a enable is true, auto-delete + is turned on. + + If auto-deleting is turned on, all the items in the stack are + deleted when the stack itself is deleted. This is convenient if + the stack has the only pointers to the items. + + The default setting is false, for safety. If you turn it on, be + careful about copying the stack, or you might find yourself with + two stacks deleting the same items. + + Note that the auto-delete setting may also affect other functions in + subclasses. For example, a subclass that has a remove() function + will remove the item from its data structure, and if auto-delete is + enabled, will also delete the item. + + \sa autoDelete() +*/ + +/*! + \fn QDataStream& Q3PtrStack::read(QDataStream& s, Q3PtrCollection::Item& item) + + Reads a stack 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& Q3PtrStack::write(QDataStream& s, + Q3PtrCollection::Item item) const + + Writes a stack item, \a item, to the stream \a s and returns a + reference to the stream. + + The default implementation does nothing. + + \sa read() +*/