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