kiten/lib

HistoryPtrList.cpp

00001 /* This file is part of Kiten, a KDE Japanese Reference Tool...
00002    Copyright (C) 2006 Joseph Kerian <jkerian@gmail.com>
00003                 (C) 2006 Eric Kjeldergaard <kjelderg@gmail.com>
00004 
00005    This library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Library General Public
00007    License as published by the Free Software Foundation; either
00008    version 2 of the License, or (at your option) any later version.
00009 
00010    This library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Library General Public License for more details.
00014 
00015    You should have received a copy of the GNU Library General Public License
00016    along with this library; see the file COPYING.LIB.  If not, write to
00017    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018    Boston, MA 02110-1301, USA.
00019 */
00020 #include "HistoryPtrList.h"
00021 #include "EntryList.h"
00022 
00023 #include <QtCore/QList>
00024 #include <QtCore/QMutableListIterator>
00025 
00026 class HistoryPtrList::Private {
00027 public:
00028         Private() : m_index(-1) {}
00029         static const int s_max_size = 20;
00030         int m_index;
00031         QList<EntryList*> m_list;
00032 };
00033 
00034 HistoryPtrList::HistoryPtrList():d(new Private) {
00035 }
00036 
00037 HistoryPtrList::~HistoryPtrList() {
00038     for(int i=d->m_list.size()-1; i>=0; i--) {
00039         d->m_list.at(i)->deleteAll();
00040         delete d->m_list.at(i);
00041     }
00042     delete d;
00043 }
00044 
00045 void
00046 HistoryPtrList::addItem(EntryList *newItem) {
00047     if(!newItem) return;
00048     //If we're currently looking at something prior to the end of the list
00049     //Remove everything in the list up to this point.
00050     int currentPosition = d->m_index+1;
00051     EntryList *temp;
00052     while(currentPosition < count()) {
00053         temp = d->m_list.takeLast();
00054         temp->deleteAll();
00055         delete temp;
00056     }
00057 
00058     //Now... check to make sure our history isn't 'fat'
00059     while(count() >= d->s_max_size) {
00060          temp = d->m_list.takeFirst();
00061          temp->deleteAll();
00062          delete temp;
00063     }
00064     d->m_index = count()-1; //Since we have trimmed down to the current position
00065 
00066     //One other odd case... if this query is a repeat of the last query
00067     //replace the current one with the new one
00068     if(d->m_list.size() > 0) {
00069         if(current()->getQuery() == newItem->getQuery()) {
00070             temp = d->m_list.takeLast();
00071             temp->deleteAll();
00072             delete temp;
00073         }
00074     }
00075     //Now add the item
00076     d->m_list.append(newItem);
00077     d->m_index = count()-1;
00078 }
00079 
00080 //Get a StringList of the History Items
00081 QStringList
00082 HistoryPtrList::toStringList() {
00083     QStringList result;
00084 
00085     foreach(const EntryList *p, d->m_list)
00086         result.append(p->getQuery().toString());
00087 
00088     return result;
00089 }
00090 
00091 QStringList
00092 HistoryPtrList::toStringListPrev() {
00093     QStringList result;
00094 
00095     for(int i=0; i<d->m_index; i++)
00096         result.append(d->m_list.at(i)->getQuery().toString());
00097 
00098     return result;
00099 }
00100 
00101 QStringList
00102 HistoryPtrList::toStringListNext() {
00103     HistoryPtrList localCopy(*this);
00104 
00105     int currentPosition = d->m_index + 1;
00106     while(currentPosition--)
00107         localCopy.d->m_list.removeFirst();
00108 
00109     return localCopy.toStringList();
00110 }
00111 
00112 void
00113 HistoryPtrList::next(int distance) {
00114     if(distance + d->m_index > count() - 1)
00115         d->m_index = count() - 1;
00116     else
00117         d->m_index += distance;
00118 }
00119 
00120 void
00121 HistoryPtrList::prev(int distance) {
00122     if(d->m_index - distance < 0)
00123         d->m_index = 0;
00124     else
00125         d->m_index -= distance;
00126 }
00127 
00128 EntryList*
00129 HistoryPtrList::current() {
00130     if(d->m_index == -1) return NULL;
00131     return d->m_list.at(d->m_index);
00132 }
00133 
00134 void
00135 HistoryPtrList::setCurrent(int i) {
00136     if(i<count() && i>=0)
00137         d->m_index=i;
00138 }
00139 
00140 int
00141 HistoryPtrList::index() {
00142     return d->m_index;
00143 }
00144 
00145 int
00146 HistoryPtrList::count() {
00147     return d->m_list.size();
00148 }
kiten/lib

HistoryPtrList.cpp

kiten/lib

kdeedu
