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 <kio/global.h>
  24 #include <QKeyEvent>
  25
  26 KItemListRoleEditor::KItemListRoleEditor(QWidget *parent) :
  27     KTextEdit(parent),
  28     m_index(0),
  29     m_role(),
  30     m_blockFinishedSignal(false)
  31 {
  32     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  33     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  34     setAcceptRichText(false);
  35     enableFindReplace(false);
  36     document()->setDocumentMargin(0);
  37
  38     if (parent) {
  39         parent->installEventFilter(this);
  40     }
  41
  42     connect(this, SIGNAL(textChanged()), this, SLOT(autoAdjustSize()));
  43 }
  44
  45 KItemListRoleEditor::~KItemListRoleEditor()
  46 {
  47 }
  48
  49 void KItemListRoleEditor::setIndex(int index)
  50 {
  51     m_index = index;
  52 }
  53
  54 int KItemListRoleEditor::index() const
  55 {
  56     return m_index;
  57 }
  58
  59 void KItemListRoleEditor::setRole(const QByteArray& role)
  60 {
  61     m_role = role;
  62 }
  63
  64 QByteArray KItemListRoleEditor::role() const
  65 {
  66     return m_role;
  67 }
  68
  69 bool KItemListRoleEditor::eventFilter(QObject* watched, QEvent* event)
  70 {
  71     if (watched == parentWidget() && event->type() == QEvent::Resize) {
  72         emitRoleEditingFinished();
  73     }
  74
  75     return KTextEdit::eventFilter(watched, event);
  76 }
  77
  78 bool KItemListRoleEditor::event(QEvent* event)
  79 {
  80     if (event->type() == QEvent::FocusOut) {
  81         QFocusEvent* focusEvent = static_cast<QFocusEvent*>(event);
  82         if (focusEvent->reason() != Qt::PopupFocusReason) {
  83             emitRoleEditingFinished();
  84         }
  85     }
  86     return KTextEdit::event(event);
  87 }
  88
  89 void KItemListRoleEditor::keyPressEvent(QKeyEvent* event)
  90 {
  91     switch (event->key()) {
  92     case Qt::Key_Escape:
  93         // Emitting the signal roleEditingCanceled might result
  94         // in losing the focus. Per default losing the focus emits
  95         // a roleEditingFinished signal (see KItemListRoleEditor::event),
  96         // which is not wanted in this case.
  97         m_blockFinishedSignal = true;
  98         emit roleEditingCanceled(m_index, m_role, KIO::encodeFileName(toPlainText()));
  99         m_blockFinishedSignal = false;
 100         event->accept();
 101         return;
 102     case Qt::Key_Enter:
 103     case Qt::Key_Return:
 104         emitRoleEditingFinished();
 105         event->accept();
 106         return;
 107     default:
 108         break;
 109     }
 110
 111     KTextEdit::keyPressEvent(event);
 112 }
 113
 114 void KItemListRoleEditor::autoAdjustSize()
 115 {
 116     const qreal frameBorder = 2 * frameWidth();
 117
 118     const qreal requiredWidth = document()->size().width();
 119     const qreal availableWidth = size().width() - frameBorder;
 120     if (requiredWidth > availableWidth) {
 121         qreal newWidth = requiredWidth + frameBorder;
 122         if (parentWidget() && pos().x() + newWidth > parentWidget()->width()) {
 123             newWidth = parentWidget()->width() - pos().x();
 124         }
 125         resize(newWidth, size().height());
 126     }
 127
 128     const qreal requiredHeight = document()->size().height();
 129     const qreal availableHeight = size().height() - frameBorder;
 130     if (requiredHeight > availableHeight) {
 131         qreal newHeight = requiredHeight + frameBorder;
 132         if (parentWidget() && pos().y() + newHeight > parentWidget()->height()) {
 133             newHeight = parentWidget()->height() - pos().y();
 134         }
 135         resize(size().width(), newHeight);
 136     }
 137 }
 138
 139 void KItemListRoleEditor::emitRoleEditingFinished()
 140 {
 141     if (!m_blockFinishedSignal) {
 142         emit roleEditingFinished(m_index, m_role, KIO::encodeFileName(toPlainText()));
 143     }
 144 }
 145
 146 #include "kitemlistroleeditor.moc"