src/kitemviews/private/kitemlistroleeditor.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2012 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  18  ***************************************************************************/
  19
  20 #include "kitemlistroleeditor.h"
  21
  22 #include <KDebug>
  23 #include <QKeyEvent>
  24
  25 KItemListRoleEditor::KItemListRoleEditor(QWidget *parent) :
  26     KTextEdit(parent),
  27     m_index(0),
  28     m_role(),
  29     m_blockFinishedSignal(false)
  30 {
  31     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  32     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  33     setAcceptRichText(false);
  34     document()->setDocumentMargin(0);
  35
  36     if (parent) {
  37         parent->installEventFilter(this);
  38     }
  39
  40     connect(this, SIGNAL(textChanged()), this, SLOT(autoAdjustSize()));
  41 }
  42
  43 KItemListRoleEditor::~KItemListRoleEditor()
  44 {
  45 }
  46
  47 void KItemListRoleEditor::setIndex(int index)
  48 {
  49     m_index = index;
  50 }
  51
  52 int KItemListRoleEditor::index() const
  53 {
  54     return m_index;
  55 }
  56
  57 void KItemListRoleEditor::setRole(const QByteArray& role)
  58 {
  59     m_role = role;
  60 }
  61
  62 QByteArray KItemListRoleEditor::role() const
  63 {
  64     return m_role;
  65 }
  66
  67 bool KItemListRoleEditor::eventFilter(QObject* watched, QEvent* event)
  68 {
  69     if (watched == parentWidget() && event->type() == QEvent::Resize) {
  70         emitRoleEditingFinished();
  71     }
  72
  73     return KTextEdit::eventFilter(watched, event);
  74 }
  75
  76 bool KItemListRoleEditor::event(QEvent* event)
  77 {
  78     if (event->type() == QEvent::FocusOut) {
  79         QFocusEvent* focusEvent = static_cast<QFocusEvent*>(event);
  80         if (focusEvent->reason() != Qt::PopupFocusReason) {
  81             emitRoleEditingFinished();
  82         }
  83     }
  84     return KTextEdit::event(event);
  85 }
  86
  87 void KItemListRoleEditor::keyPressEvent(QKeyEvent* event)
  88 {
  89     switch (event->key()) {
  90     case Qt::Key_Escape:
  91         // Emitting the signal roleEditingCanceled might result
  92         // in losing the focus. Per default losing the focus emits
  93         // a roleEditingFinished signal (see KItemListRoleEditor::event),
  94         // which is not wanted in this case.
  95         m_blockFinishedSignal = true;
  96         emit roleEditingCanceled(m_index, m_role, toPlainText());
  97         m_blockFinishedSignal = false;
  98         event->accept();
  99         return;
 100     case Qt::Key_Enter:
 101     case Qt::Key_Return:
 102         emitRoleEditingFinished();
 103         event->accept();
 104         return;
 105     default:
 106         break;
 107     }
 108
 109     KTextEdit::keyPressEvent(event);
 110 }
 111
 112 void KItemListRoleEditor::autoAdjustSize()
 113 {
 114     const qreal frameBorder = 2 * frameWidth();
 115
 116     const qreal requiredWidth = document()->size().width();
 117     const qreal availableWidth = size().width() - frameBorder;
 118     if (requiredWidth > availableWidth) {
 119         qreal newWidth = requiredWidth + frameBorder;
 120         if (parentWidget() && pos().x() + newWidth > parentWidget()->width()) {
 121             newWidth = parentWidget()->width() - pos().x();
 122         }
 123         resize(newWidth, size().height());
 124     }
 125
 126     const qreal requiredHeight = document()->size().height();
 127     const qreal availableHeight = size().height() - frameBorder;
 128     if (requiredHeight > availableHeight) {
 129         qreal newHeight = requiredHeight + frameBorder;
 130         if (parentWidget() && pos().y() + newHeight > parentWidget()->height()) {
 131             newHeight = parentWidget()->height() - pos().y();
 132         }
 133         resize(size().width(), newHeight);
 134     }
 135 }
 136
 137 void KItemListRoleEditor::emitRoleEditingFinished()
 138 {
 139     if (!m_blockFinishedSignal) {
 140         emit roleEditingFinished(m_index, m_role, toPlainText());
 141     }
 142 }
 143
 144 #include "kitemlistroleeditor.moc"