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/*
* pickfileradio.cpp - radio button with an associated file picker
* Program: kalarm
* Copyright (C) 2005 by David Jarvie <software@astrojar.org.uk>
*
* 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 "kalarm.h"
#include <tqbuttongroup.h>
#include <tqpushbutton.h>
#include <tqtimer.h>
#include <kdebug.h>
#include "lineedit.h"
#include "pickfileradio.moc"
PickFileRadio::PickFileRadio(TQPushButton* button, LineEdit* edit, const TQString& text, TQButtonGroup* parent, const char* name)
: RadioButton(text, parent, name),
mGroup(parent),
mEdit(edit),
mButton(button),
mLastId(-1), // set to an invalid value
mRevertId(false)
{
Q_ASSERT(parent);
Q_ASSERT(button);
mButton->setEnabled(false);
connect(mButton, TQ_SIGNAL(clicked()), TQ_SLOT(slotPickFile()));
if (mEdit)
mEdit->setEnabled(false);
connect(mGroup, TQ_SIGNAL(buttonSet(int)), TQ_SLOT(slotSelectionChanged(int)));
}
PickFileRadio::PickFileRadio(const TQString& text, TQButtonGroup* parent, const char* name)
: RadioButton(text, parent, name),
mGroup(parent),
mEdit(0),
mButton(0),
mLastId(-1), // set to an invalid value
mRevertId(false)
{
Q_ASSERT(parent);
}
void PickFileRadio::init(TQPushButton* button, LineEdit* edit)
{
Q_ASSERT(button);
mEdit = edit;
mButton = button;
mButton->setEnabled(false);
connect(mButton, TQ_SIGNAL(clicked()), TQ_SLOT(slotPickFile()));
if (mEdit)
mEdit->setEnabled(false);
connect(mGroup, TQ_SIGNAL(buttonSet(int)), TQ_SLOT(slotSelectionChanged(int)));
setReadOnly(RadioButton::isReadOnly());
}
void PickFileRadio::setReadOnly(bool ro)
{
RadioButton::setReadOnly(ro);
if (mButton)
{
if (mEdit)
mEdit->setReadOnly(ro);
if (ro)
mButton->hide();
else
mButton->show();
}
}
void PickFileRadio::setFile(const TQString& file)
{
mFile = file;
}
TQString PickFileRadio::file() const
{
return mEdit ? mEdit->text() : mFile;
}
/******************************************************************************
* Set the radio button enabled or disabled.
* Adjusts the enabled/disabled state of other controls appropriately.
*/
void PickFileRadio::setEnabled(bool enable)
{
Q_ASSERT(mButton);
RadioButton::setEnabled(enable);
enable = enable && mGroup->selected() == this;
if (enable)
{
if (!pickFileIfNone())
enable = false; // revert to previously selected type
}
mButton->setEnabled(enable);
if (mEdit)
mEdit->setEnabled(enable);
}
/******************************************************************************
* Called when the selected radio button changes.
*/
void PickFileRadio::slotSelectionChanged(int id)
{
if (id == mLastId || mRevertId)
return;
int radioId = mGroup->id(this);
if (mLastId == radioId)
{
mButton->setEnabled(false);
if (mEdit)
mEdit->setEnabled(false);
}
else if (id == radioId)
{
if (!pickFileIfNone())
return; // revert to previously selected type
mButton->setEnabled(true);
if (mEdit)
mEdit->setEnabled(true);
}
mLastId = id;
}
/******************************************************************************
* Prompt for a file name if there is none currently entered.
*/
bool PickFileRadio::pickFileIfNone()
{
if (mEdit)
mFile = mEdit->text();
if (!mFile.isEmpty())
return true;
slotPickFile();
return !mFile.isEmpty();
}
/******************************************************************************
* Called when the file picker button is clicked.
*/
void PickFileRadio::slotPickFile()
{
mFile = pickFile();
if (mEdit)
mEdit->setText(mFile);
if (mFile.isEmpty())
{
// No file is selected, so revert to the previous radio button selection.
// But wait a moment before setting the radio button, or it won't work.
mRevertId = true; // prevent picker dialogue popping up twice
TQTimer::singleShot(0, this, TQ_SLOT(setLastId()));
}
}
/******************************************************************************
* Select the previously selected radio button in the group.
*/
void PickFileRadio::setLastId()
{
if (mLastId == -1)
setOn(false); // we don't know the previous selection, so just turn this button off
else
mGroup->setButton(mLastId);
mRevertId = false;
}
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