AbaKus – a complex calculator
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/*
* abakuslistview.cpp - part of abakus
* Copyright (C) 2004, 2005 Michael Pyne <michael.pyne@kdemail.net>
*
* 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
*/
#include <klocale.h>
#include <kpopupmenu.h>
#include <kdebug.h>
#include <tqdragobject.h>
#include <tqcursor.h>
#include <tqheader.h>
#include "dragsupport.h"
#include "abakuslistview.h"
#include "valuemanager.h"
#include "function.h"
ListView::ListView(TQWidget *parent, const char *name) :
TDEListView(parent, name), m_menu(0), m_usePopup(false), m_removeSingleId(0),
m_removeAllId(0)
{
setResizeMode(LastColumn);
setDragEnabled(true);
connect(this, TQT_SIGNAL(contextMenuRequested(TQListViewItem *, const TQPoint &, int)),
TQT_SLOT(rightClicked(TQListViewItem *, const TQPoint &)));
}
TQDragObject *ListView::dragObject()
{
TQPoint viewportPos = viewport()->mapFromGlobal(TQCursor::pos());
TQListViewItem *item = itemAt(viewportPos);
if(!item)
return 0;
int column = header()->sectionAt(viewportPos.x());
TQString dragText = item->text(column);
TQDragObject *drag = new TQTextDrag(dragText, this, "list item drag");
drag->setPixmap(DragSupport::makePixmap(dragText, font()));
return drag;
}
void ListView::enablePopupHandler(bool enable)
{
if(enable == m_usePopup)
return;
m_usePopup = enable;
if(m_usePopup) {
if(m_menu)
kdError() << "ListView menu shouldn't exist here!\n";
m_menu = new TDEPopupMenu(this);
m_removeSingleId = m_menu->insertItem(removeItemString(), this, TQT_SLOT(removeSelected()));
m_removeAllId = m_menu->insertItem("Placeholder", this, TQT_SLOT(removeAllItems()));
}
else {
delete m_menu;
m_menu = 0;
}
}
TQString ListView::removeItemString() const
{
return TQString();
}
TQString ListView::removeAllItemsString(unsigned count) const
{
Q_UNUSED(count);
return TQString();
}
void ListView::removeSelectedItem(TQListViewItem *item)
{
Q_UNUSED(item);
}
void ListView::removeAllItems()
{
}
bool ListView::isItemRemovable(TQListViewItem *item) const
{
Q_UNUSED(item);
return false;
}
void ListView::rightClicked(TQListViewItem *item, const TQPoint &pt)
{
if(!m_usePopup)
return;
m_menu->setItemEnabled(m_removeSingleId, item && isItemRemovable(item));
m_menu->changeItem(m_removeAllId, removeAllItemsString(childCount()));
m_menu->popup(pt);
}
void ListView::removeSelected()
{
removeSelectedItem(selectedItem());
}
ValueListViewItem::ValueListViewItem(TQListView *listView, const TQString &name,
const Abakus::number_t &value) :
TDEListViewItem(listView, name), m_value(value)
{
valueChanged();
}
void ValueListViewItem::valueChanged()
{
setText(1, m_value.toString());
repaint();
}
void ValueListViewItem::valueChanged(const Abakus::number_t &newValue)
{
m_value = newValue;
valueChanged();
}
Abakus::number_t ValueListViewItem::itemValue() const
{
return m_value;
}
VariableListView::VariableListView(TQWidget *parent, const char *name) :
ListView(parent, name)
{
enablePopupHandler(true);
}
TQString VariableListView::removeItemString() const
{
return i18n("Remove selected variable");
}
TQString VariableListView::removeAllItemsString(unsigned count) const
{
// count is unreliable because not all of the elements in the list view
// can be removed.
count = 0;
TQStringList values = ValueManager::instance()->valueNames();
for(TQStringList::ConstIterator value = values.constBegin(); value != values.constEnd(); ++value)
if(!ValueManager::instance()->isValueReadOnly(*value))
++count;
return i18n("Remove all variables (1 variable)",
"Remove all variables (%n variables)",
count);
}
bool VariableListView::isItemRemovable(TQListViewItem *item) const
{
return !ValueManager::instance()->isValueReadOnly(item->text(0));
}
void VariableListView::removeSelectedItem(TQListViewItem *item)
{
ValueManager::instance()->removeValue(item->text(0));
}
void VariableListView::removeAllItems()
{
ValueManager::instance()->slotRemoveUserVariables();
}
FunctionListView::FunctionListView(TQWidget *parent, const char *name) :
ListView(parent, name)
{
enablePopupHandler(true);
}
TQString FunctionListView::removeItemString() const
{
return i18n("Remove selected function");
}
TQString FunctionListView::removeAllItemsString(unsigned count) const
{
return i18n("Remove all functions (1 function)",
"Remove all functions (%n functions)",
count);
}
bool FunctionListView::isItemRemovable(TQListViewItem *item) const
{
return true;
}
void FunctionListView::removeSelectedItem(TQListViewItem *item)
{
// Use section to get the beginning of the string up to (and not
// including) the first (
TQString name = item->text(0).section('(', 0, 0);
FunctionManager::instance()->removeFunction(name);
}
void FunctionListView::removeAllItems()
{
TQStringList fns = FunctionManager::instance()->functionList(FunctionManager::UserDefined);
for(TQStringList::ConstIterator fn = fns.constBegin(); fn != fns.constEnd(); ++fn)
FunctionManager::instance()->removeFunction(*fn);
}
#include "abakuslistview.moc"