plasma-framework/extendergroup.cpp

178 lines
4.7 KiB
C++

/*
* Copyright 2009 by Rob Scheepmaker <r.scheepmaker@student.utwente.nl>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include <QAction>
#include <QString>
#include <QList>
#include <QtGui/QGraphicsWidget>
#include "applet.h"
#include "extender.h"
#include "extendergroup.h"
#include "extenderitem.h"
namespace Plasma
{
class ExtenderGroupPrivate
{
public:
ExtenderGroupPrivate(ExtenderGroup *group)
: collapsed(true),
hideIfEmpty(true)
{
q = group;
}
~ExtenderGroupPrivate()
{
}
void addItemToGroup(Plasma::ExtenderItem *item)
{
if (item->group() == q) {
if (collapsed) {
q->extender()->itemRemovedEvent(item);
item->hide();
}
if (!q->isVisible()) {
q->extender()->itemAddedEvent(q);
q->show();
}
}
}
void removeItemFromGroup(Plasma::ExtenderItem *item)
{
if (item->group() == q) {
if (q->items().isEmpty()) {
q->extender()->itemRemovedEvent(q);
q->hide();
}
}
}
ExtenderGroup *q;
bool collapsed;
bool hideIfEmpty;
};
class ExtenderItem;
class Applet;
ExtenderGroup::ExtenderGroup(Extender *parent, uint groupId)
: ExtenderItem(parent, groupId),
d(new ExtenderGroupPrivate(this))
{
connect(extender(), SIGNAL(itemAttached(Plasma::ExtenderItem*)),
this, SLOT(addItemToGroup(Plasma::ExtenderItem*)));
connect(extender(), SIGNAL(itemDetached(Plasma::ExtenderItem*)),
this, SLOT(removeItemFromGroup(Plasma::ExtenderItem*)));
config().writeEntry("isGroup", true);
QAction *expand = new QAction(this);
expand->setIcon(KIcon("arrow-up"));
expand->setVisible(true);
expand->setToolTip(i18n("Show this group."));
connect(expand, SIGNAL(triggered()), this, SLOT(expandGroup()));
addAction("expand", expand);
QAction *collapse = new QAction(this);
collapse->setIcon(KIcon("arrow-down"));
collapse->setVisible(false);
collapse->setToolTip(i18n("Hide this group."));
connect(collapse, SIGNAL(triggered()), this, SLOT(collapseGroup()));
addAction("collapse", collapse);
QString groupName;
foreach (ExtenderItem *item, extender()->attachedItems()) {
groupName = item->config().readEntry("group", "");
if (groupName != "" && groupName == name()) {
item->setGroup(this);
}
}
if (items().isEmpty()) {
hide();
extender()->itemRemovedEvent(this);
}
}
ExtenderGroup::~ExtenderGroup()
{
delete d;
}
QList<ExtenderItem*> ExtenderGroup::items() const
{
QList<ExtenderItem*> result;
foreach (ExtenderItem *item, extender()->attachedItems()) {
if (item->group() == this) {
result.append(item);
}
}
return result;
}
bool ExtenderGroup::hideIfEmpty() const
{
return d->hideIfEmpty;
}
void ExtenderGroup::setHideIfEmpty(bool hideIfEmpty)
{
d->hideIfEmpty = hideIfEmpty;
if (hideIfEmpty && items().isEmpty()) {
hide();
extender()->itemRemovedEvent(this);
}
}
void ExtenderGroup::expandGroup()
{
d->collapsed = false;
action("collapse")->setVisible(true);
action("expand")->setVisible(false);
foreach (ExtenderItem *item, extender()->attachedItems()) {
if (item->group() == this) {
item->show();
extender()->itemAddedEvent(item);
}
}
}
void ExtenderGroup::collapseGroup()
{
d->collapsed = true;
action("collapse")->setVisible(false);
action("expand")->setVisible(true);
foreach (ExtenderItem *item, extender()->attachedItems()) {
if (item != this && item->group() == this) {
item->hide();
extender()->itemRemovedEvent(item);
}
}
}
} // Plasma namespace
#include "extendergroup.moc"