kwmapeditor.cpp

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/*
   Copyright (C) 2003,2004 George Staikos <staikos@kde.org>

   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; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "kwmapeditor.h"
#include <kaction.h>
#include <kactioncollection.h>
#include <kdebug.h>
#include <klocale.h>
#include <kmenu.h>
#include <kstandardaction.h>
#include <kwindowsystem.h>
#include <QPointer>
#include <QApplication>
#include <QClipboard>
#include <QToolButton>
#include <ktextedit.h>
#include <QFocusEvent>
#include <QKeyEvent>
#include <QItemDelegate>

class InlineEditor : public KTextEdit {
    public:
    InlineEditor(KWMapEditor *p) : KTextEdit(), _p(p) {
        setAttribute(Qt::WA_DeleteOnClose);
        setWindowFlags(Qt::Widget | Qt::FramelessWindowHint);
        setCheckSpellingEnabled(false);
        connect(p, SIGNAL(destroyed()), SLOT(close()));
    }

    protected:
        virtual void focusOutEvent(QFocusEvent *e) {
            if (e->reason() == Qt::PopupFocusReason) {
                // TODO: It seems we only get here if we're disturbed
                // by our own popup. this needs some clearance though.
                return;
            }

            close();
        }
        virtual void keyPressEvent(QKeyEvent *e) {
            if (e->key() == Qt::Key_Escape) {
                e->accept();
                close();
            } else {
                e->ignore();
                KTextEdit::keyPressEvent(e);
            }
        }
        virtual void contextMenuEvent( QContextMenuEvent *event )
        {
           QMenu *menu = createStandardContextMenu();
           popup = menu;
           popup->exec( event->globalPos() );
           delete popup;
        }
        QPointer<KWMapEditor> _p;
        QPointer<QMenu> popup;
};

class KWMapEditorDelegate : public QItemDelegate
{
    public:
        KWMapEditorDelegate(KWMapEditor *parent) : QItemDelegate(parent)
        {
        }
        
        QWidget *createEditor(QWidget *parentWidget, const QStyleOptionViewItem &option, const QModelIndex &index) const
        {
            if (index.column() != 2) {
                return QItemDelegate::createEditor(parentWidget, option, index);
            }

            KWMapEditor *mapEditor = static_cast<KWMapEditor*>(parent());
            return new InlineEditor(mapEditor);
        }
        
        void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
        {
            if (dynamic_cast<InlineEditor*>(editor))
            {
                KWMapEditor *mapEditor = static_cast<KWMapEditor*>(parent());
                const QRect geo = mapEditor->visualRect(index);
                editor->move(mapEditor->mapToGlobal(geo.topLeft()));
                editor->resize(geo.width() * 2, geo.height() * 3);
            }
            else
            {
                QItemDelegate::updateEditorGeometry(editor, option, index);
            }
        }
        
        void setEditorData(QWidget *editor, const QModelIndex &index) const
        {
            InlineEditor *e = dynamic_cast<InlineEditor*>(editor);
            if (e)
            {
                KWMapEditor *mapEditor = static_cast<KWMapEditor*>(parent());
                e->setText(mapEditor->item(index.row(), index.column())->text());
            }
            else
            {
                QItemDelegate::setEditorData(editor, index);
            }
        }
        
        void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
        {
            InlineEditor *e = dynamic_cast<InlineEditor*>(editor);
            if (e)
            {
                KWMapEditor *mapEditor = static_cast<KWMapEditor*>(parent());
                mapEditor->item(index.row(), index.column())->setText(e->toPlainText());
            }
            else
            {
                QItemDelegate::setModelData(editor, model, index);
            }
        }
};

KWMapEditor::KWMapEditor(QMap<QString,QString>& map, QWidget *parent)
: QTableWidget(0, 3, parent), _map(map) {
    setItemDelegate(new KWMapEditorDelegate(this));
    _ac = new KActionCollection(this);
    _copyAct = KStandardAction::copy(this, SLOT(copy()), _ac);
    connect(this, SIGNAL(itemChanged(QTableWidgetItem*)), this, SIGNAL(dirty()));
    connect(this, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(contextMenu(QPoint)));
    setSelectionMode(NoSelection);
    setHorizontalHeaderLabels(QStringList() << QString() << i18n("Key") << i18n("Value"));
    setContextMenuPolicy(Qt::CustomContextMenu);
    reload();
}

void KWMapEditor::reload() {
    int row = 0;

    while ((row = rowCount()) > _map.count()) {
        removeRow(row - 1);
    }

    if ((row = rowCount()) < _map.count()) {
        setRowCount(_map.count());
        for (int x = row; x < rowCount(); ++x) {
            QToolButton *b = new QToolButton(this);
            b->setIcon(KIcon("edit-delete"));
            b->setToolTip(i18n("Delete Entry"));
            connect(b, SIGNAL(clicked()), this, SLOT(erase()));
            setCellWidget(x, 0, b);
            if (columnWidth(0) != b->sizeHint().width()) {
                setColumnWidth(0, b->sizeHint().width());
            }
            setItem(x, 1, new QTableWidgetItem());
            setItem(x, 2, new QTableWidgetItem());
        }
    }

    row = 0;
    for (QMap<QString,QString>::Iterator it = _map.begin(); it != _map.end(); ++it) {
        item(row, 1)->setText(it.key());
        item(row, 2)->setText(it.value());
        row++;
    }
}


KWMapEditor::~KWMapEditor() {
}


void KWMapEditor::erase() {
    const QObject *o = sender();
    for (int i = 0; i < rowCount(); i++) {
        if (cellWidget(i, 0) == o) {
            removeRow(i);
            break;
        }
    }

    emit dirty();
}


void KWMapEditor::saveMap() {
    _map.clear();

    for (int i = 0; i < rowCount(); i++) {
        _map[item(i, 1)->text()] = item(i, 2)->text();
    }
}


void KWMapEditor::addEntry() {
    int x = rowCount();
    insertRow(x);
    QToolButton *b = new QToolButton(this);
    b->setIcon(KIcon("edit-delete"));
    b->setToolTip(i18n("Delete Entry"));
    connect(b, SIGNAL(clicked()), this, SLOT(erase()));
    setCellWidget(x, 0, b);
    setItem(x, 1, new QTableWidgetItem());
    setItem(x, 2, new QTableWidgetItem());
    scrollToItem(item(x, 1));
    setCurrentCell(x, 1);
    emit dirty();
}


void KWMapEditor::emitDirty() {
    emit dirty();
}


void KWMapEditor::contextMenu(const QPoint& pos) {
    QTableWidgetItem *twi = itemAt(pos);
    _contextRow = row(twi);
    KMenu *m = new KMenu(this);
    m->addAction( i18n("&New Entry" ), this, SLOT(addEntry()));
    m->addAction( _copyAct );
    m->popup(mapToGlobal(pos));
}


void KWMapEditor::copy() {
    QTableWidgetItem *twi = item(_contextRow, 2);
    if (twi)
        QApplication::clipboard()->setText(twi->text());
}

#include "kwmapeditor.moc"