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subclassingimpl.cpp

/*
* This file is part of QDevelop, an open-source cross-platform IDE
* Copyright (C) 2006  Jean-Luc Biord
*
* 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
* Contact e-mail: Jean-Luc Biord <jl.biord@free.fr>
* Program URL   : http://qdevelop.org
*
*/
#include "subclassingimpl.h"
#include "projectmanager.h"
#include "editor.h"
#include "tabwidget.h"
#include "ui_newimplementation.h"
#include <QFile>
#include <QList>
#include <QMetaMethod>
#include <QUiLoader>
#include <QFileDialog>
#include <QDebug>
#include <QSortFilterProxyModel>
#include <QTreeWidget>

SubclassingImpl::SubclassingImpl(ProjectManager * parent, MainImpl *mainImpl, QString srcDirectory, QString uiName, QStringList headers)
        : QDialog(0)
{
    m_srcDirectory = srcDirectory;
    m_parent = parent;
    m_mainImpl = mainImpl;
    m_uiName = uiName;

    QApplication::setOverrideCursor(Qt::WaitCursor);
    setupUi(this);

    treeSlots = new QTreeWidget;
    treeSlots->hide();
    treeSlots->setHeaderLabel( tr("") );

    proxyModel = new QSortFilterProxyModel;
    proxyModel->setDynamicSortFilter(true);
    proxyModel->setSourceModel(treeSlots->model());
    filterView->setModel(proxyModel);

    implementations(headers);
    if ( comboClassName->count() )
    {
        comboClassName->setCurrentIndex( 0 );
        slotParseForm();
    }
    QApplication::restoreOverrideCursor();
}

QString SubclassingImpl::newFile()
{
    QString filename = comboClassName->itemData( comboClassName->currentIndex() ).toString();
    return filename;
}

QStringList SubclassingImpl::signatures(QString header)
{
    QStringList sign;
    bool slot = false;
    QString formattedParams, name;
    foreach(QString line, header.split("\n") )
    {
        if ( line.simplified().right(1) == ":" )
        {
            if ( line.simplified().contains("slots") )
                slot = true;
            else
                slot = false;
            continue;
        }

        if ( slot )
        {
            line = line.simplified();
            line = line.section(" ", 1).simplified();
            name = line.section("(", 0, 0).simplified();
            QString params = line.section("(", 1).section(")", 0, 0).simplified();
            formattedParams.clear();
            foreach(QString param, params.split(",") )
            {
                if ( param.contains("=") )
                    param = param.simplified().left( param.simplified().lastIndexOf("=") );
                if ( param.contains("&") )
                    param = param.simplified().left( param.simplified().lastIndexOf("&")+1 );
                else if ( param.contains("*") )
                    param = param.simplified().left( param.simplified().lastIndexOf("*")+1 );
                else if ( param.simplified().contains(" ") )
                    param = param.simplified().left( param.simplified().lastIndexOf(" ")+1 );
                formattedParams += param + ",";
            }
            formattedParams = formattedParams.simplified().left( formattedParams.lastIndexOf(",") );
            QString s = name + "(" + formattedParams + ")";
            sign << QMetaObject::normalizedSignature( s.toLatin1() );
        }
    }
    return sign;
}

void SubclassingImpl::implementations(QStringList headers)
{
    QString name = objectName();

    foreach(QString header, headers)
    {
        QFile file(header);
        if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
            return;

        QTextStream in(&file);
        QString className;
        while (!in.atEnd())
        {
            QString line = in.readLine();
            if ( line.simplified().indexOf("class ") == 0 && !line.contains(";") )
                className = line.simplified().section("class ", 1, 1).section(":", 0, 0).simplified().section(" ", -1, -1).simplified();
            if ( line.contains("Ui::"+name) )
            {
                header = header.left( header.lastIndexOf(".") );
                comboClassName->addItem(className, QVariant(header));
                break;
            }
        }
        file.close();
    }
}

QString SubclassingImpl::objectName()
{
    QUiLoader loader;
    QFile file(m_uiName);
    file.open(QFile::ReadOnly);
    QWidget *dial = loader.load(&file, this);
    file.close();
    QString name = dial->objectName();
    delete dial;
    return name;
}

QString SubclassingImpl::className()
{
    QUiLoader loader;
    QFile file(m_uiName);
    file.open(QFile::ReadOnly);
    QWidget *dial = loader.load(&file, this);
    file.close();
    QString className = dial->metaObject()->className();
    delete dial;
    return className;
}

QStringList SubclassingImpl::templateHeaderImpl()
{
    QString filename = comboClassName->itemData( comboClassName->currentIndex() ).toString().section("/", -1).section(".", 0);
    QString classImpl = comboClassName->currentText();
    QFile file(":/templates/templates/impl.h.template");
    QString data;

    file.open(QIODevice::ReadOnly);
    data = file.readAll();
    file.close();

    data.replace("$IMPL_H", filename.toUpper()+"_H");
    data.replace("$UIHEADERNAME", "\"ui_"+m_uiName.section("/", -1, -1).section(".", 0, 0)+".h\"");
    data.replace("$CLASSNAME", classImpl);
    data.replace("$PARENTNAME", className());
    data.replace("$OBJECTNAME", objectName());
    QStringList impl = data.split("\n");

    return impl;
}

QStringList SubclassingImpl::templateSourceImpl()
{
    QString filename  = comboClassName->itemData( comboClassName->currentIndex() ).toString().section("/", -1);
    QString classImpl = comboClassName->currentText();
    QFile   file(":/templates/templates/impl.cpp.template");
    QString data;

    file.open(QIODevice::ReadOnly);
    data = file.readAll();
    file.close();

    data.replace("$HEADERNAME", "\""+filename+".h\"");
    data.replace("$CLASSNAME", classImpl);
    data.replace("$PARENTNAME", className());
    QStringList impl = data.split("\n");

    return impl;
}

void SubclassingImpl::on_okButton_clicked()
{
    QString       filename = comboClassName->itemData( comboClassName->currentIndex() ).toString();
    QFile         file( filename + ".h" );
    QStringList   headerImpl;
    QStringList   sourceImpl;

    // Find filename in opened editors
    Editor *editorHeader = 0;
    foreach(Editor *ed, m_mainImpl->allEditors() )
    {
        if ( ed->filename() == filename+ ".h" )
        {
            editorHeader = ed;
        }
    }
    //
    if ( editorHeader )
    {
        // Get content of opened editor
        headerImpl = editorHeader->toPlainText().split("\n");
    }
    else
    {
      // If file exists, get content from file
        if (file.open(QIODevice::ReadOnly | QIODevice::Text))
        {
            headerImpl = QString(file.readAll()).split("\n");
            file.close();
        }
        else // Otherwise creation of a new content from template
            headerImpl = templateHeaderImpl();
    }
    //
    int headerInsertLineAfter = headerImpl.indexOf( "private slots:" );
    if ( headerInsertLineAfter != -1 )
    {
        if ( editorHeader )
        {
            headerInsertLineAfter += 2;
        }
        else
        {
            headerInsertLineAfter += 1;
        }
    }
    if ( headerInsertLineAfter == -1 )
    {
        int last = headerImpl.lastIndexOf("};");
        if ( last == -1 )
            last = headerImpl.lastIndexOf("}");
        headerInsertLineAfter = last -1 ;
        if ( editorHeader )
        {
            editorHeader->insertText("private slots:\n", headerInsertLineAfter++);
            }
        else
        {
            headerInsertLineAfter--;
            headerImpl.insert(headerInsertLineAfter++, "private slots:");
            }
    }
    // Implementation
    // Find filename in opened editors
    Editor *editorImplementation = 0;
    foreach(Editor *ed, m_mainImpl->allEditors() )
    {
        if ( ed->filename() == filename+ ".cpp" )
        {
            editorImplementation = ed;
        }
    }
    if ( !editorImplementation )
    {
        // Get content of opened editor
        file.setFileName( filename+".cpp" );
        if (file.open(QIODevice::ReadOnly | QIODevice::Text))
        {
            sourceImpl = QString(file.readAll()).split("\n");
            file.close();
        }
        else // Otherwise creation of a new content from template
            sourceImpl = templateSourceImpl();
    }
    // Now insert code for all new items checked 
    for (int i=0; i<treeSlots->topLevelItemCount(); i++)
    {
        QTreeWidgetItem *topLevelItem = treeSlots->topLevelItem( i );
        for (int j=0; j< topLevelItem->childCount(); j++)
        {
            QTreeWidgetItem *item = topLevelItem->child( j );
            if ( item->checkState( 0 ) && item->textColor(0)!= Qt::blue )
            {
                QString s = item->data(0, Qt::UserRole).toString();
                if ( editorHeader )
                    editorHeader->insertText("\tvoid "+s+";\n", headerInsertLineAfter++);
                else
                    headerImpl.insert(headerInsertLineAfter++, "\tvoid "+s+";");
                if ( editorImplementation )
                {
                    editorImplementation->insertText("void "+ comboClassName->currentText() + "::" + s, -1);
                    editorImplementation->insertText("{", -1);
                    editorImplementation->insertText("\t// TODO", -1);
                    editorImplementation->insertText("}\n", -1);

                }
                else
                {
                    sourceImpl << "void "+ comboClassName->currentText() + "::" + s;
                    sourceImpl << "{";
                    sourceImpl << "\t// TODO";
                    sourceImpl << "}\n";
                }
            }
        }
    }

    if ( !editorHeader )
    {
        file.setFileName( filename+".h" );
        if (file.open(QIODevice::WriteOnly | QIODevice::Text))
        {
            foreach(QString line, headerImpl)
            {
                file.write( line.toLatin1()+"\n" );
            }
        }
        file.close();
    }
    if ( !editorImplementation )
    {
        file.setFileName( filename+".cpp" );
        if (file.open(QIODevice::WriteOnly | QIODevice::Text))
        {
            foreach(QString line, sourceImpl)
            {
                file.write( line.toLatin1()+"\n" );
            }
        }

        file.close();
    }
}

void SubclassingImpl::on_clearButton_clicked()
{
    filterEdit->clear();
}

void SubclassingImpl::on_newImplementation_clicked()
{
    QDialog *dial = new QDialog;
    uiNewImplementation.setupUi(dial);

    connect(uiNewImplementation.locationButton, SIGNAL(clicked()), this, SLOT(slotLocation()) );
    connect(uiNewImplementation.className, SIGNAL(textChanged(QString)), this, SLOT(slotEnableokButton(QString)) );
    connect(uiNewImplementation.location , SIGNAL(textChanged(QString)), this, SLOT(slotEnableokButton(QString)) );
    connect(uiNewImplementation.filename , SIGNAL(textChanged(QString)), this, SLOT(slotEnableokButton(QString)) );

    if ( !comboClassName->count() )
    {
        uiNewImplementation.className->setText(objectName()+"Impl");
        uiNewImplementation.location->setText(m_srcDirectory+"/");
        uiNewImplementation.filename->setText(QString(objectName()+"Impl").toLower());
    }
    if ( dial->exec() == QDialog::Accepted )
    {
        if ( uiNewImplementation.filename->text().right(2).toLower() == ".h" || uiNewImplementation.filename->text().right(4).toLower() == ".cpp" )
            uiNewImplementation.filename->setText( uiNewImplementation.filename->text().left( uiNewImplementation.filename->text().lastIndexOf(".") ) );
        comboClassName->addItem(uiNewImplementation.className->text(), QVariant(uiNewImplementation.location->text()+"/"+uiNewImplementation.filename->text()));
        comboClassName->setCurrentIndex( comboClassName->count()-1 );
        slotParseForm();
    }

    delete dial;
}

void SubclassingImpl::on_comboClassName_activated(int i)
{
    slotParseForm();

    // supress gcc warnings
    i = 0;
}

void SubclassingImpl::on_filterEdit_textChanged( const QString &text )
{
    QRegExp regExp( text, Qt::CaseInsensitive, QRegExp::RegExp2  );
    proxyModel->setFilterRegExp(regExp);
}

void SubclassingImpl::slotParseForm()
{
    QString data = comboClassName->itemData( comboClassName->currentIndex() ).toString();
    if ( QFile::exists( data + ".h"  ) )
    {
        okButton->setText( tr("&Update") );
    }
    else
    {
        okButton->setText( tr("C&reate") );
    }

    okButton->setEnabled( true );
    filename->setText( data.section("/", -1).section(".", 0, 0) + " "+tr("(.h and .cpp)") );
    location->setText( data.left( data.lastIndexOf("/")+1 ) );

    QString headerContent;
    QFile fileHeader( comboClassName->itemData( comboClassName->currentIndex() ).toString() + ".h");
    if (fileHeader.open(QIODevice::ReadOnly | QIODevice::Text))
    {
        headerContent = fileHeader.readAll();
        fileHeader.close();
    }

    QStringList         listeSignatures = signatures(headerContent);
    QFile               file(m_uiName);
    QUiLoader           loader;
    QTreeWidgetItem           *item;
    QWidget             *dial;

    file.open(QFile::ReadOnly);
    dial = loader.load(&file, this);
    file.close();

    QList<QWidget *> widgets = dial->findChildren<QWidget *>();
    QList<QAction *> actions = dial->findChildren<QAction *>();
    QList<QObject *> objs;

    // merge the 2 lists into one big one!
    foreach(QObject *o, actions)
    objs.append( o );
    foreach(QObject *o, widgets)
    objs.append( o );

    treeSlots->clear();
    foreach(QObject *w, objs)
    {
        QString name = w->objectName();
        if ( name.isEmpty() )
            continue;

        QString className = w->metaObject()->className();
        item = new QTreeWidgetItem(QStringList(name+" ("+className+")"));
        treeSlots->addTopLevelItem ( item );
        for (int i=0; i<w->metaObject()->methodCount(); i++)
        {
            QMetaMethod meta = w->metaObject()->method( i );
            if ( meta.methodType() == QMetaMethod::Signal )
            {
                QTreeWidgetItem *item2 = new QTreeWidgetItem(item, QStringList()<<"on_"+name+"_"+meta.signature());
                QString method = QString("on_"+name+"_"+meta.signature()).section("(", 0, 0) + "(";
                for (int param=0; param<meta.parameterTypes().count(); param++)
                    method += meta.parameterTypes().at(param)+" "+meta.parameterNames().at(param)+", ";
                if ( method.right(2) == ", " )
                    method = method.left( method.length() - 2 );
                method += ")";
                item2->setData(0, Qt::UserRole, QVariant(method));
                if ( listeSignatures.contains( "on_"+name+"_"+meta.signature() ) )
                {
                    item2->setFlags( Qt::ItemIsEnabled );
                    item2->setCheckState(0, Qt::Checked );
                    item2->setTextColor(0, Qt::blue);
                }
                else
                {
                    item2->setFlags( Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
                    item2->setCheckState(0, Qt::Unchecked );
                }
            }
        }
        treeSlots->expandItem( item );
    }
    delete dial;
}

void SubclassingImpl::slotLocation()
{
    QString s = QFileDialog::getExistingDirectory(
                    this,
                    tr("Choose the file location"),
                    m_srcDirectory,
                    QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks );

    if ( s.isEmpty() )
        return;
    uiNewImplementation.location->setText( s );
}

void SubclassingImpl::slotEnableokButton(QString)
{
    uiNewImplementation.okButton->setDisabled(
        uiNewImplementation.location->text().isEmpty()  ||
        uiNewImplementation.className->text().isEmpty() ||
        uiNewImplementation.filename->text().isEmpty()
    );
}

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