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#include "interfacestabwidget.h"

#include "interfacewidget.h"

#include "errorcollector.h"

#include <qserviceinterfacedescriptor.h>

#include <QVBoxLayout>

#include <QPushButton>

#include <QTabBar>

#include <QDebug>

InterfacesTabWidget::InterfacesTabWidget(QWidget *parent)

    : QTabWidget(parent)

{

    connect(tabBar(), SIGNAL(tabCloseRequested(int)), SLOT(tabCloseRequested(int)));

}

void InterfacesTabWidget::load(const QList<QTM_PREPEND_NAMESPACE(QServiceInterfaceDescriptor)> &descriptors)

{

    QWidget *widg;

    while (count() > 0) {

        widg = widget(count()-1);

        if (widg) {

            removeTab(count()-1);

            delete widg;

        }

    }

    InterfaceWidget *iface;

    for (int i=0; i<descriptors.count(); i++)

        iface = addInterface(descriptors[i]);

    if (count() == 0)

        addInterface(); // blank placeholder interface

    setCurrentIndex(0);

}

void InterfacesTabWidget::validate(ErrorCollector *errors)

{

    int firstInvalid = -1;

    QHash<QString, int> titleCount;

    for (int i=0; i<count(); i++) {

        InterfaceWidget *ifaceWidget = qobject_cast<InterfaceWidget*>(widget(i));

        int errCountBefore = errors->errorCount();

        ifaceWidget->validate(errors);

        if (errors->errorCount() > errCountBefore) {

            if (firstInvalid < 0)

                firstInvalid = i;

            tabBar()->setTabTextColor(i, Qt::red);

        } else {

            QString title = ifaceWidget->title();

            if (titleCount.contains(title)) {

                titleCount[title]++;

            } else {

                titleCount[title] = 1;

            }

        }

    }

    QHashIterator<QString, int> i(titleCount);

    while (i.hasNext()) {

        if (i.next().value() > 1) {

            errors->addError(tr("Found multiple implementations for interface \"%1\". A service cannot have multiple implementations of the same interface with the same version.", "interface name and version").arg(i.key()));

        }

    }

    if (firstInvalid >= 0)

        setCurrentIndex(firstInvalid);

}

void InterfacesTabWidget::writeXml(QXmlStreamWriter *writer) const

{

    for (int i=0; i<count(); i++) {

        InterfaceWidget *ifaceWidget = qobject_cast<InterfaceWidget*>(widget(i));

        if (ifaceWidget) {

            writer->writeStartElement(QLatin1String("interface"));

            ifaceWidget->writeXml(writer);

            writer->writeEndElement();

        }

    }

}

InterfaceWidget *InterfacesTabWidget::addInterface(const QTM_PREPEND_NAMESPACE(QServiceInterfaceDescriptor) &descriptor)

{

    InterfaceWidget *w = new InterfaceWidget;

    connect(w, SIGNAL(titleChanged(QString)), SLOT(interfaceTitleChanged(QString)));

    connect(w, SIGNAL(dataChanged()), SIGNAL(dataChanged()));

    if (descriptor.isValid())

        w->load(descriptor);

    addTab(w, w->title());

    setCurrentWidget(w);

    w->init();

    return w;

}

void InterfacesTabWidget::tabInserted(int)

{

    if (count() > 1)

        tabBar()->setTabsClosable(true);

    emit dataChanged();

}

void InterfacesTabWidget::tabRemoved(int)

{

    if (count() == 1)

        tabBar()->setTabsClosable(false);

    emit dataChanged();

}

void InterfacesTabWidget::tabCloseRequested(int index)

{

    QWidget *w = widget(index);

    if (w) {

        removeTab(index);

        delete w;

    }

}

void InterfacesTabWidget::interfaceTitleChanged(const QString &text)

{

    InterfaceWidget *tab = qobject_cast<InterfaceWidget*>(sender());

    if (tab) {

        int index = indexOf(tab);

        if (index >= 0) {

            setTabText(index, text);

            tabBar()->setTabTextColor(index, QPalette().text().color());

        }

    }

}