mirror of
https://bitbucket.org/smil3y/kdelibs.git
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144 lines
4.7 KiB
C++
144 lines
4.7 KiB
C++
/*
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Copyright (c) 2009 Stephen Kelly <steveire@gmail.com>
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA.
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*/
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#include "scriptablereparentingwidget.h"
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#include <QPlainTextEdit>
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#include <QTreeView>
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#include <QVBoxLayout>
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#include <QScriptEngine>
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#include "kdebug.h"
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#include <QLabel>
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#include <QSplitter>
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#include <QComboBox>
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static const char * const threadingFunctionNames[] = {
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"None",
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"Flat List",
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"Straight Line Tree",
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"Dragon Teeth 1",
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"Dragon Teeth 2",
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"Specified parents 1"
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};
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static const char * const threadingFunctionBodies[] = {
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"",
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"return false;",
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"return true;",
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"if (descendant % 3 ==1)\n"
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" return false;\n"
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"return true;",
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"if (descendant % 4 ==1)\n"
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" return false;\n"
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"return true;",
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"var threaddata = [[1, 2, 3, 4],\n"
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" [13, 14, 15],\n"
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" [13, 16, 17],\n"
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" [5, 6]];\n"
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"\n"
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"for (var i = 0; i < threaddata.length; ++i)\n"
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"{\n"
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" var a = threaddata[i].indexOf(ancestor);\n"
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" var d = threaddata[i].indexOf(descendant);\n"
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" if (a >= 0 && d >= 0)\n"
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" return a < d;\n"
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"}\n"
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"return false;"
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};
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ScriptableReparentingProxyModel::ScriptableReparentingProxyModel(QObject* parent)
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: KReparentingProxyModel(parent),
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m_scriptEngine(new QScriptEngine(this))
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{
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}
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bool ScriptableReparentingProxyModel::isDescendantOf(const QModelIndex& ancestor, const QModelIndex& descendant) const
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{
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if (!m_implementationFunction.isValid())
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return KReparentingProxyModel::isDescendantOf(ancestor, descendant);
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QScriptValueList arguments = QScriptValueList() << ancestor.data().toInt() << descendant.data().toInt();
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QScriptValue returnValue = m_implementationFunction.call(QScriptValue(), arguments );
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if (!returnValue.isBool())
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return KReparentingProxyModel::isDescendantOf(ancestor, descendant);
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return returnValue.toBool();
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}
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void ScriptableReparentingProxyModel::setImplementation(const QString& implementation)
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{
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beginChangeRule();
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m_implementationFunction = m_scriptEngine->evaluate(implementation);
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m_implementationFunction = m_scriptEngine->globalObject().property("isDescendantOf");
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endChangeRule();
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}
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ScriptableReparentingWidget::ScriptableReparentingWidget(QAbstractItemModel *rootModel, QWidget* parent, Qt::WindowFlags f)
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: QWidget(parent, f),
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m_reparentingProxyModel(new ScriptableReparentingProxyModel(this))
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{
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QVBoxLayout *mainLayout = new QVBoxLayout(this);
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QSplitter *splitter = new QSplitter(Qt::Vertical, this);
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mainLayout->addWidget(splitter);
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m_treeView = new QTreeView(splitter);
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QWidget *container = new QWidget(splitter);
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QVBoxLayout *layout = new QVBoxLayout(container);
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m_textEdit = new QPlainTextEdit(container);
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m_textEdit->setFont(QFont("monospace"));
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m_comboBox = new QComboBox(container);
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for (int i = 0; i < sizeof threadingFunctionNames / sizeof *threadingFunctionNames; ++i)
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m_comboBox->addItem(*(threadingFunctionNames + i), *(threadingFunctionBodies + i));
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layout->addWidget(m_comboBox);
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connect(m_comboBox, SIGNAL(currentIndexChanged(int)), SLOT(setExampleFunction(int)));
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layout->addWidget(new QLabel("function isDescendantOf (ancestor, descendant) {", container));
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QHBoxLayout *indentedLayout = new QHBoxLayout(container);
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indentedLayout->addSpacing(30);
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indentedLayout->addWidget(m_textEdit);
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layout->addLayout(indentedLayout);
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layout->addWidget(new QLabel("}", container));
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m_reparentingProxyModel->setSourceModel(rootModel);
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m_treeView->setModel(m_reparentingProxyModel);
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splitter->setStretchFactor(0, 100);
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connect(m_textEdit, SIGNAL(textChanged()), SLOT(textChanged()));
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textChanged();
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}
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void ScriptableReparentingWidget::setExampleFunction(int index)
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{
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m_textEdit->setPlainText(m_comboBox->itemData(index).toString());
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}
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void ScriptableReparentingWidget::textChanged()
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{
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m_reparentingProxyModel->setImplementation("function isDescendantOf (ancestor, descendant) { " + m_textEdit->toPlainText() + " }");
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m_treeView->expandAll();
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}
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#include "scriptablereparentingwidget.moc"
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