Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

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;
+}