templatedlg.cpp

/*
 *  templatedlg.cpp  -  dialogue to create, edit and delete alarm templates
 *  Program:  kalarm
 *  Copyright © 2004-2006 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 <tqlayout.h>
#include <tqpushbutton.h>
#include <tqwhatsthis.h>
 
#include <tdelocale.h>
#include <kguiitem.h>
#include <tdemessagebox.h>
#include <tdeaccel.h>
#include <kdebug.h>
 
#include "editdlg.h"
#include "alarmcalendar.h"
#include "functions.h"
#include "templatelistview.h"
#include "undo.h"
#include "templatedlg.moc"
 
static const char TMPL_DIALOG_NAME[] = "TemplateDialog";
 
 
TemplateDlg* TemplateDlg::mInstance = 0;
 
 
TemplateDlg::TemplateDlg(TQWidget* parent, const char* name)
    : KDialogBase(KDialogBase::Plain, i18n("Alarm Templates"), Close, Ok, parent, name, false, true)
{
    TQWidget* topWidget = plainPage();
    TQBoxLayout* topLayout = new TQHBoxLayout(topWidget);
    topLayout->setSpacing(spacingHint());
 
    TQBoxLayout* layout = new TQVBoxLayout(topLayout);
    mTemplateList = new TemplateListView(true, i18n("The list of alarm templates"), topWidget);
    mTemplateList->setSelectionMode(TQListView::Extended);
    mTemplateList->setSizePolicy(TQSizePolicy(TQSizePolicy::Expanding, TQSizePolicy::Expanding));
    connect(mTemplateList, TQ_SIGNAL(selectionChanged()), TQ_SLOT(slotSelectionChanged()));
    layout->addWidget(mTemplateList);
 
    layout = new TQVBoxLayout(topLayout);
    TQPushButton* button = new TQPushButton(i18n("&New..."), topWidget);
    connect(button, TQ_SIGNAL(clicked()), TQ_SLOT(slotNew()));
    TQWhatsThis::add(button, i18n("Create a new alarm template"));
    layout->addWidget(button);
 
    mEditButton = new TQPushButton(i18n("&Edit..."), topWidget);
    connect(mEditButton, TQ_SIGNAL(clicked()), TQ_SLOT(slotEdit()));
    TQWhatsThis::add(mEditButton, i18n("Edit the currently highlighted alarm template"));
    layout->addWidget(mEditButton);
 
    mCopyButton = new TQPushButton(i18n("Co&py"), topWidget);
    connect(mCopyButton, TQ_SIGNAL(clicked()), TQ_SLOT(slotCopy()));
    TQWhatsThis::add(mCopyButton,
          i18n("Create a new alarm template based on a copy of the currently highlighted template"));
    layout->addWidget(mCopyButton);
 
    mDeleteButton = new TQPushButton(i18n("&Delete"), topWidget);
    connect(mDeleteButton, TQ_SIGNAL(clicked()), TQ_SLOT(slotDelete()));
    TQWhatsThis::add(mDeleteButton, i18n("Delete the currently highlighted alarm template"));
    layout->addWidget(mDeleteButton);
 
    TDEAccel* accel = new TDEAccel(this);
    accel->insert(TDEStdAccel::SelectAll, mTemplateList, TQ_SLOT(slotSelectAll()));
    accel->insert(TDEStdAccel::Deselect, mTemplateList, TQ_SLOT(slotDeselect()));
    accel->readSettings();
 
    mTemplateList->refresh();
    slotSelectionChanged();          // enable/disable buttons as appropriate
 
    TQSize s;
    if (KAlarm::readConfigWindowSize(TMPL_DIALOG_NAME, s))
        resize(s);
}
 
/******************************************************************************
*  Destructor.
*/
TemplateDlg::~TemplateDlg()
{
    mInstance = 0;
}
 
/******************************************************************************
*  Create an instance, if none already exists.
*/
TemplateDlg* TemplateDlg::create(TQWidget* parent, const char* name)
{
    if (mInstance)
        return 0;
    mInstance = new TemplateDlg(parent, name);
    return mInstance;
}
 
/******************************************************************************
*  Called when the New Template button is clicked to create a new template
*  based on the currently selected alarm.
*/
void TemplateDlg::slotNew()
{
    createTemplate(0, this, mTemplateList);
}
 
/******************************************************************************
*  Called when the Copy button is clicked to edit a copy of an existing alarm,
*  to add to the list.
*/
void TemplateDlg::slotCopy()
{
    TemplateListViewItem* item = mTemplateList->selectedItem();
    if (item)
    {
        KAEvent event = item->event();
        createTemplate(&event, mTemplateList);
    }
}
 
/******************************************************************************
*  Create a new template.
*  If 'event' is non-zero, base the new template on an existing event or template.
*/
void TemplateDlg::createTemplate(const KAEvent* event, TQWidget* parent, TemplateListView* view)
{
    EditAlarmDlg editDlg(true, i18n("New Alarm Template"), parent, 0, event);
    if (editDlg.exec() == TQDialog::Accepted)
    {
        KAEvent event;
        editDlg.getEvent(event);
 
        // Add the template to the displayed lists and to the calendar file
        KAlarm::addTemplate(event, view, &editDlg);
        Undo::saveAdd(event);
    }
}
 
/******************************************************************************
*  Called when the Modify button is clicked to edit the currently highlighted
*  alarm in the list.
*/
void TemplateDlg::slotEdit()
{
    TemplateListViewItem* item = mTemplateList->selectedItem();
    if (item)
    {
        KAEvent event = item->event();
        EditAlarmDlg editDlg(true, i18n("Edit Alarm Template"), this, 0, &event);
        if (editDlg.exec() == TQDialog::Accepted)
        {
            KAEvent newEvent;
            editDlg.getEvent(newEvent);
            TQString id = event.id();
            newEvent.setEventID(id);
 
            // Update the event in the displays and in the calendar file
            KAlarm::updateTemplate(newEvent, mTemplateList, &editDlg);
            Undo::saveEdit(event, newEvent);
        }
    }
}
 
/******************************************************************************
*  Called when the Delete button is clicked to delete the currently highlighted
*  alarms in the list.
*/
void TemplateDlg::slotDelete()
{
    TQValueList<EventListViewItemBase*> items = mTemplateList->selectedItems();
    int n = items.count();
    if (KMessageBox::warningContinueCancel(this, i18n("Do you really want to delete the selected alarm template?",
                                                      "Do you really want to delete the %n selected alarm templates?", n),
                                           i18n("Delete Alarm Template", "Delete Alarm Templates", n), KGuiItem(i18n("&Delete"), "edit-delete"))
            != KMessageBox::Continue)
        return;
 
    int warnErr = 0;
    KAlarm::UpdateStatus status = KAlarm::UPDATE_OK;
    TQValueList<KAEvent> events;
    AlarmCalendar::templateCalendar()->startUpdate();    // prevent multiple saves of the calendar until we're finished
    for (TQValueList<EventListViewItemBase*>::Iterator it = items.begin();  it != items.end();  ++it)
    {
        TemplateListViewItem* item = (TemplateListViewItem*)(*it);
        events.append(item->event());
        KAlarm::UpdateStatus st = KAlarm::deleteTemplate(item->event());
        if (st != KAlarm::UPDATE_OK)
        {
            status = st;
            ++warnErr;
        }
    }
    if (!AlarmCalendar::templateCalendar()->endUpdate())    // save the calendar now
    {
        status = KAlarm::SAVE_FAILED;
        warnErr = items.count();
    }
    Undo::saveDeletes(events);
    if (warnErr)
        displayUpdateError(this, status, KAlarm::ERR_TEMPLATE, warnErr);
}
 
/******************************************************************************
* Called when the group of items selected changes.
* Enable/disable the buttons depending on whether/how many templates are
* currently highlighted.
*/
void TemplateDlg::slotSelectionChanged()
{
    int count = mTemplateList->selectedCount();
    mEditButton->setEnabled(count == 1);
    mCopyButton->setEnabled(count == 1);
    mDeleteButton->setEnabled(count);
}
 
/******************************************************************************
*  Called when the dialog's size has changed.
*  Records the new size in the config file.
*/
void TemplateDlg::resizeEvent(TQResizeEvent* re)
{
    if (isVisible())
        KAlarm::writeConfigWindowSize(TMPL_DIALOG_NAME, re->size());
    KDialog::resizeEvent(re);
}