kexi

kexidbdatetimeedit.cpp

00001 /* This file is part of the KDE project
00002    Copyright (C) 2005 Cedric Pasteur <cedric.pasteur@free.fr>
00003    Copyright (C) 2004-2005 Jaroslaw Staniek <js@iidea.pl>
00004 
00005    This program is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Library General Public
00007    License as published by the Free Software Foundation; either
00008    version 2 of the License, or (at your option) any later version.
00009 
00010    This program is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Library General Public License for more details.
00014 
00015    You should have received a copy of the GNU Library General Public License
00016    along with this program; see the file COPYING.  If not, write to
00017    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018  * Boston, MA 02110-1301, USA.
00019 */
00020 
00021 #include "kexidbdatetimeedit.h"
00022 
00023 #include <qtoolbutton.h>
00024 #include <qlayout.h>
00025 #include <kpopupmenu.h>
00026 #include <kdatepicker.h>
00027 #include <kdatetbl.h>
00028 #include <kexiutils/utils.h>
00029 
00030 KexiDBDateTimeEdit::KexiDBDateTimeEdit(const QDateTime &datetime, QWidget *parent, const char *name)
00031  : QWidget(parent, name), KexiFormDataItemInterface()
00032 {
00033     m_invalidState = false;
00034     m_cleared = false;
00035     m_readOnly = false;
00036 
00037     m_dateEdit = new QDateEdit(datetime.date(), this);
00038     m_dateEdit->setAutoAdvance(true);
00039     m_dateEdit->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::MinimumExpanding);
00040 //  m_dateEdit->setFixedWidth( QFontMetrics(m_dateEdit->font()).width("8888-88-88___") );
00041     connect(m_dateEdit, SIGNAL(valueChanged(const QDate&)), this, SLOT(slotValueChanged()));
00042     connect(m_dateEdit, SIGNAL(valueChanged(const QDate&)), this, SIGNAL(dateTimeChanged()));
00043 
00044     QToolButton* btn = new QToolButton(this);
00045     btn->setText("...");
00046     btn->setFixedWidth( QFontMetrics(btn->font()).width(" ... ") );
00047     btn->setPopupDelay(1); //1 ms
00048 
00049     m_timeEdit = new QTimeEdit(datetime.time(), this);;
00050     m_timeEdit->setAutoAdvance(true);
00051     m_timeEdit->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::MinimumExpanding);
00052     connect(m_timeEdit, SIGNAL(valueChanged(const QTime&)), this, SLOT(slotValueChanged()));
00053     connect(m_timeEdit, SIGNAL(valueChanged(const QTime&)), this, SIGNAL(dateTimeChanged()));
00054 
00055 #ifdef QDateTimeEditor_HACK
00056     m_dte_date = KexiUtils::findFirstChild<QDateTimeEditor>(m_dateEdit, "QDateTimeEditor");
00057     m_dte_time = KexiUtils::findFirstChild<QDateTimeEditor>(m_timeEdit, "QDateTimeEditor");
00058 #else
00059     m_dte_date = 0;
00060 #endif
00061 
00062     m_datePickerPopupMenu = new KPopupMenu(0, "date_popup");
00063     connect(m_datePickerPopupMenu, SIGNAL(aboutToShow()), this, SLOT(slotShowDatePicker()));
00064     m_datePicker = new KDatePicker(m_datePickerPopupMenu, QDate::currentDate(), 0);
00065 
00066     KDateTable *dt = KexiUtils::findFirstChild<KDateTable>(m_datePicker, "KDateTable");
00067     if (dt)
00068         connect(dt, SIGNAL(tableClicked()), this, SLOT(acceptDate()));
00069     m_datePicker->setCloseButton(true);
00070     m_datePicker->installEventFilter(this);
00071     m_datePickerPopupMenu->insertItem(m_datePicker);
00072     btn->setPopup(m_datePickerPopupMenu);
00073 
00074     QHBoxLayout* layout = new QHBoxLayout(this);
00075     layout->addWidget(m_dateEdit, 0);
00076     layout->addWidget(btn, 0);
00077     layout->addWidget(m_timeEdit, 0);
00078     //layout->addStretch(1);
00079 
00080     setFocusProxy(m_dateEdit);
00081 }
00082 
00083 KexiDBDateTimeEdit::~KexiDBDateTimeEdit()
00084 {
00085 }
00086 
00087 void KexiDBDateTimeEdit::setInvalidState(const QString & )
00088 {
00089     setEnabled(false);
00090     setReadOnly(true);
00091     m_invalidState = true;
00093     if (focusPolicy() & TabFocus)
00094         setFocusPolicy(QWidget::ClickFocus);
00095 }
00096 
00097 void
00098 KexiDBDateTimeEdit::setEnabled(bool enabled)
00099 {
00100      // prevent the user from reenabling the widget when it is in invalid state
00101     if(enabled && m_invalidState)
00102         return;
00103     QWidget::setEnabled(enabled);
00104 }
00105 
00106 void KexiDBDateTimeEdit::setValueInternal(const QVariant &, bool )
00107 {
00108     m_dateEdit->setDate(m_origValue.toDate());
00109     m_timeEdit->setTime(m_origValue.toTime());
00110 }
00111 
00112 QVariant
00113 KexiDBDateTimeEdit::value()
00114 {
00115     return QDateTime(m_dateEdit->date(), m_timeEdit->time());
00116 }
00117 
00118 bool KexiDBDateTimeEdit::valueIsNull()
00119 {
00120     return !m_dateEdit->date().isValid() || m_dateEdit->date().isNull()
00121         || !m_timeEdit->time().isValid() || m_timeEdit->time().isNull();
00122 }
00123 
00124 bool KexiDBDateTimeEdit::valueIsEmpty()
00125 {
00126     return m_cleared;
00127 }
00128 
00129 bool KexiDBDateTimeEdit::isReadOnly() const
00130 {
00133     return m_readOnly; 
00134 }
00135 
00136 void KexiDBDateTimeEdit::setReadOnly(bool set)
00137 {
00138     m_readOnly = set;
00139 }
00140 
00141 QWidget*
00142 KexiDBDateTimeEdit::widget()
00143 {
00144     return m_dateEdit;
00145 }
00146 
00147 bool KexiDBDateTimeEdit::cursorAtStart()
00148 {
00149 #ifdef QDateTimeEditor_HACK
00150     return m_dte_date && m_dateEdit->hasFocus() && m_dte_date->focusSection()==0;
00151 #else
00152     return false;
00153 #endif
00154 }
00155 
00156 bool KexiDBDateTimeEdit::cursorAtEnd()
00157 {
00158 #ifdef QDateTimeEditor_HACK
00159     return m_dte_time && m_timeEdit->hasFocus()
00160         && m_dte_time->focusSection()==int(m_dte_time->sectionCount()-1);
00161 #else
00162     return false;
00163 #endif
00164 }
00165 
00166 void KexiDBDateTimeEdit::clear()
00167 {
00168     m_dateEdit->setDate(QDate());
00169     m_timeEdit->setTime(QTime());
00170     m_cleared = true;
00171 }
00172 
00173 void
00174 KexiDBDateTimeEdit::slotValueChanged()
00175 {
00176     m_cleared = false;
00177 }
00178 
00179 void
00180 KexiDBDateTimeEdit::slotShowDatePicker()
00181 {
00182     QDate date = m_dateEdit->date();
00183 
00184     m_datePicker->setDate(date);
00185     m_datePicker->setFocus();
00186     m_datePicker->show();
00187     m_datePicker->setFocus();
00188 }
00189 
00190 void
00191 KexiDBDateTimeEdit::acceptDate()
00192 {
00193     m_dateEdit->setDate(m_datePicker->date());
00194     m_datePickerPopupMenu->hide();
00195 }
00196 
00197 bool
00198 KexiDBDateTimeEdit::eventFilter(QObject *o, QEvent *e)
00199 {
00200     if (o != m_datePicker)
00201         return false;
00202 
00203     switch (e->type()) {
00204         case QEvent::Hide:
00205             m_datePickerPopupMenu->hide();
00206             break;
00207         case QEvent::KeyPress:
00208         case QEvent::KeyRelease: {
00209             QKeyEvent *ke = (QKeyEvent *)e;
00210             if (ke->key()==Qt::Key_Enter || ke->key()==Qt::Key_Return) {
00211                 //accepting picker
00212                 acceptDate();
00213                 return true;
00214             }
00215             else if (ke->key()==Qt::Key_Escape) {
00216                 //canceling picker
00217                 m_datePickerPopupMenu->hide();
00218                 return true;
00219             }
00220             else
00221                  m_datePickerPopupMenu->setFocus();
00222             break;
00223         }
00224         default:
00225             break;
00226     }
00227     return false;
00228 }
00229 
00230 QDateTime
00231 KexiDBDateTimeEdit::dateTime() const
00232 {
00233     return QDateTime(m_dateEdit->date(), m_timeEdit->time());
00234 }
00235 
00236 void
00237 KexiDBDateTimeEdit::setDateTime(const QDateTime &dt)
00238 {
00239     m_dateEdit->setDate(dt.date());
00240     m_timeEdit->setTime(dt.time());
00241 }
00242 
00243 #include "kexidbdatetimeedit.moc"
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