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#include <QtTest/QtTest>

#include "q3widgetstack.h"

#include <qapplication.h>

#include <qboxlayout.h>

#include <qlayout.h>

#include <qradiobutton.h>

#include <qlineedit.h>

#include <qdialog.h>

//TESTED_CLASS=

//TESTED_FILES=

class tst_Q3WidgetStack : public QObject

{

    Q_OBJECT

public:

    tst_Q3WidgetStack();

    virtual ~tst_Q3WidgetStack();

protected slots:

    void aboutToShow_helper(int);

    void aboutToShow_helper(QWidget *);

public slots:

    void initTestCase();

    void cleanupTestCase();

    void init();

    void cleanup();

private slots:

    void aboutToShow();

    void sizeHint();

    void addWidget();

private:

    Q3WidgetStack *testWidget;

    QWidget *widgetOne;

    QWidget *widgetTwo;

    // Helpers for aboutToShow() test

    QWidget *currentVisibleWidgetOne;

    int aboutToShowId;

    bool aboutToShowSignalOne;

    QWidget *currentVisibleWidgetTwo;

    QWidget *aboutToShowWidget;

    bool aboutToShowSignalTwo;

};

const QSizePolicy ignored(QSizePolicy::Ignored, QSizePolicy::Ignored);

const QSizePolicy preferred(QSizePolicy::Preferred, QSizePolicy::Preferred);

tst_Q3WidgetStack::tst_Q3WidgetStack()

{

    testWidget = 0;

}

tst_Q3WidgetStack::~tst_Q3WidgetStack()

{

}

void tst_Q3WidgetStack::initTestCase()

{

    testWidget = new Q3WidgetStack( 0 );

    qApp->setMainWidget(testWidget);

    testWidget->show();

    widgetOne = new QWidget( testWidget );

    testWidget->addWidget( widgetOne );

    widgetTwo = new QWidget( testWidget );

    testWidget->addWidget( widgetTwo );

}

void tst_Q3WidgetStack::cleanupTestCase()

{

    delete testWidget;

    testWidget = 0;

}

void tst_Q3WidgetStack::init()

{

   testWidget->raiseWidget( widgetOne );

}

void tst_Q3WidgetStack::cleanup()

{

}

void tst_Q3WidgetStack::aboutToShow_helper(int id)

{

    currentVisibleWidgetOne = testWidget->visibleWidget();

    aboutToShowId = id;

    aboutToShowSignalOne = TRUE;

}

void tst_Q3WidgetStack::aboutToShow_helper(QWidget *widget)

{

    currentVisibleWidgetTwo = testWidget->visibleWidget();

    aboutToShowWidget = widget;

    aboutToShowSignalTwo = TRUE;

}

void tst_Q3WidgetStack::aboutToShow()

{

    currentVisibleWidgetOne = 0;

    aboutToShowId = 1000; // The id is not likely to be 1000

    aboutToShowSignalOne = FALSE;

    currentVisibleWidgetTwo = 0;

    aboutToShowWidget = 0;

    aboutToShowSignalTwo = FALSE;

    connect(testWidget, SIGNAL(aboutToShow(int)), this, SLOT(aboutToShow_helper(int)));

    connect(testWidget, SIGNAL(aboutToShow(QWidget *)), this, SLOT(aboutToShow_helper(QWidget *)));

    testWidget->raiseWidget(widgetTwo);

    for (int a = 0;a < 10;a++) {

	qApp->processEvents();

	if (aboutToShowSignalOne || aboutToShowSignalTwo)

	    break;

    }

    QVERIFY(aboutToShowSignalOne);

    QVERIFY(aboutToShowSignalTwo);

    QVERIFY(currentVisibleWidgetOne == widgetOne);

    QVERIFY(currentVisibleWidgetTwo == widgetOne);

    QCOMPARE(aboutToShowId, testWidget->id(widgetTwo));

    QCOMPARE(aboutToShowWidget, widgetTwo);

    QCOMPARE(testWidget->visibleWidget(), widgetTwo);

}

void tst_Q3WidgetStack::sizeHint()

{

    QDialog dialog(0);

    QHBoxLayout *layout = new QHBoxLayout(&dialog);

    Q3WidgetStack *stack = new Q3WidgetStack(&dialog);

    layout->addWidget(stack);

    QWidget *pageA = new QWidget(stack);

    (new QVBoxLayout(pageA))->addWidget(new QLineEdit(pageA));

    stack->addWidget(pageA);

    pageA->setSizePolicy(ignored);

    QWidget *pageB = new QWidget(stack);

    (new QVBoxLayout(pageB))->addWidget(new QRadioButton(pageB));

    stack->addWidget(pageB);

    pageB->setSizePolicy(ignored);

    stack->raiseWidget(pageA);

    dialog.show();

    QSize before(dialog.size());

    pageB->setSizePolicy(preferred);

    stack->raiseWidget(pageB);

    layout->activate();

    dialog.setFixedSize(dialog.minimumSizeHint());

    qApp->processEvents();

    QVERIFY(before != dialog.minimumSizeHint());

}

void tst_Q3WidgetStack::addWidget()

{

    QDialog dialog(0);

    Q3WidgetStack *stack = new Q3WidgetStack(&dialog);

    // The widget should now be added to the stack 

    QWidget *widget = new QWidget(stack);

    QCOMPARE(stack->id(widget), -1);

    // The widget should get a positive ID

    int id = stack->addWidget(widget);

    QVERIFY(id >= 0);

    QCOMPARE(stack->id(widget), id);

    QCOMPARE(stack->widget(id), widget);

    QWidget *widget2 = new QWidget(stack);

    QCOMPARE(stack->id(widget2), -1);

    // The widget should get a negative ID different from -1

    id = stack->addWidget(widget2, -2);

    QVERIFY(id < -1);

    QCOMPARE(stack->id(widget2), id);

    QVERIFY(stack->id(widget2) != stack->id(widget));

    QCOMPARE(stack->widget(id), widget2);

    // The widget should be removed when it's deleted

    delete widget2;

    QCOMPARE(stack->id(widget2), -1);

    QCOMPARE(stack->widget(id), (QWidget*)0);

    // Create a unique ID

    int uid = stack->id(widget) + 100;

    QWidget *widget3 = new QWidget(widget);

    // Test of reparenting

    id = stack->addWidget(widget3, uid);

    QCOMPARE(id, uid);

    QCOMPARE(stack->id(widget3), id);

    QCOMPARE(widget3->parentWidget(), (QWidget*)stack);

    QCOMPARE(stack->widget(id), widget3);

    delete widget3;

    QCOMPARE(stack->id(widget3), -1);

    QCOMPARE(stack->widget(id), (QWidget*)0);

    delete widget;

    QCOMPARE(stack->id(widget), -1);

    delete stack;

}

QTEST_MAIN(tst_Q3WidgetStack)

#include "tst_q3widgetstack.moc"