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-rw-r--r--kalarm/pickfileradio.cpp182
1 files changed, 182 insertions, 0 deletions
diff --git a/kalarm/pickfileradio.cpp b/kalarm/pickfileradio.cpp
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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, TQT_SIGNAL(clicked()), TQT_SLOT(slotPickFile()));
+ if (mEdit)
+ mEdit->setEnabled(false);
+ connect(mGroup, TQT_SIGNAL(buttonSet(int)), TQT_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, TQT_SIGNAL(clicked()), TQT_SLOT(slotPickFile()));
+ if (mEdit)
+ mEdit->setEnabled(false);
+ connect(mGroup, TQT_SIGNAL(buttonSet(int)), TQT_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, TQT_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;
+}