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Diffstat (limited to 'kalarm/pickfileradio.cpp')
| -rw-r--r-- | kalarm/pickfileradio.cpp | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/kalarm/pickfileradio.cpp b/kalarm/pickfileradio.cpp new file mode 100644 index 000000000..c00276502 --- /dev/null +++ b/kalarm/pickfileradio.cpp @@ -0,0 +1,182 @@ +/* + * 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 <qbuttongroup.h> +#include <qpushbutton.h> +#include <qtimer.h> + +#include <kdebug.h> + +#include "lineedit.h" +#include "pickfileradio.moc" + + +PickFileRadio::PickFileRadio(QPushButton* button, LineEdit* edit, const QString& text, QButtonGroup* 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, SIGNAL(clicked()), SLOT(slotPickFile())); + if (mEdit) + mEdit->setEnabled(false); + connect(mGroup, SIGNAL(buttonSet(int)), SLOT(slotSelectionChanged(int))); +} + +PickFileRadio::PickFileRadio(const QString& text, QButtonGroup* 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(QPushButton* button, LineEdit* edit) +{ + Q_ASSERT(button); + mEdit = edit; + mButton = button; + mButton->setEnabled(false); + connect(mButton, SIGNAL(clicked()), SLOT(slotPickFile())); + if (mEdit) + mEdit->setEnabled(false); + connect(mGroup, SIGNAL(buttonSet(int)), 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 QString& file) +{ + mFile = file; +} + +QString 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 + QTimer::singleShot(0, this, 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; +} |