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/***************************************************************************
                             kmymoneywizard.cpp
                             -------------------
    copyright            : (C) 2006 by Thomas Baumagrt
    email                : ipwizard@users.sourceforge.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

// ----------------------------------------------------------------------------
// QT Includes

#include <tqlayout.h>
#include <tqlabel.h>
#include <tqpoint.h>
#include <tqfont.h>
#include <tqframe.h>
#include <tqtooltip.h>

// ----------------------------------------------------------------------------
// KDE Includes

#include <klocale.h>
#include <kpushbutton.h>
#include <kstdguiitem.h>
#include <kglobalsettings.h>
#include <kiconloader.h>
#include <kapplication.h>

// ----------------------------------------------------------------------------
// Project Includes

#include <kmymoney/kmymoneywizard.h>
#include "kmymoneywizard_p.h"
#include <kmymoney/kmymoneytitlelabel.h>
#include <kmymoney/kguiutils.h>

KMyMoneyWizardPagePrivate::KMyMoneyWizardPagePrivate(TQObject* parent, const char* name) :
  TQObject(parent, name)
{
}

void KMyMoneyWizardPagePrivate::emitCompleteStateChanged(void)
{
  emit completeStateChanged();
}


KMyMoneyWizardPage::KMyMoneyWizardPage(unsigned int step, TQWidget* widget, const char* name) :
  m_step(step),
  m_widget(widget),
  d(new KMyMoneyWizardPagePrivate(TQT_TQOBJECT(widget), name))
{
  m_mandatoryGroup = new kMandatoryFieldGroup(TQT_TQOBJECT(widget));
  TQObject::connect(m_mandatoryGroup, TQT_SIGNAL(stateChanged()), object(), TQT_SIGNAL(completeStateChanged()));
  widget->hide();
}

TQObject* KMyMoneyWizardPage::object(void) const
{
  return d;
}

void KMyMoneyWizardPage::completeStateChanged(void) const
{
  d->emitCompleteStateChanged();
}

void KMyMoneyWizardPage::resetPage(void)
{
}

void KMyMoneyWizardPage::enterPage(void)
{
}

void KMyMoneyWizardPage::leavePage(void)
{
}

KMyMoneyWizardPage* KMyMoneyWizardPage::nextPage(void) const
{
  return 0;
}

bool KMyMoneyWizardPage::isLastPage(void) const
{
  return nextPage() == 0;
}

bool KMyMoneyWizardPage::isComplete(void) const
{
  if(!isLastPage())
    TQToolTip::add(wizard()->m_nextButton, i18n("Continue with next page"));
  else
    TQToolTip::add(wizard()->m_finishButton, i18n("Finish wizard"));
  return m_mandatoryGroup->isEnabled();
}

const TQString& KMyMoneyWizardPage::helpContext(void) const
{
  return TQString();
}

KMyMoneyWizard::KMyMoneyWizard(TQWidget *parent, const char *name, bool modal, WFlags f) :
  TQDialog(parent, name, modal, f),
  m_step(0)
{
  // enable the little grip in the right corner
  setSizeGripEnabled(true);

  // create buttons
  m_cancelButton = new KPushButton(i18n("&Cancel"), this);
  m_backButton = new KPushButton(i18n("&Back"), this);
  m_nextButton = new KPushButton(i18n("&Next"), this);
  m_finishButton = new KPushButton(i18n("&Finish"), this);
  m_helpButton = new KPushButton(i18n("&Help"), this);

  if ( KGlobalSettings::showIconsOnPushButtons() )
  {
    m_backButton->setIconSet( KStdGuiItem::back( KStdGuiItem::UseRTL ).iconSet() );
    m_nextButton->setIconSet( KStdGuiItem::forward( KStdGuiItem::UseRTL ).iconSet() );
    m_finishButton->setIconSet( SmallIconSet( "apply" ) );
    m_cancelButton->setIconSet( SmallIconSet( "button_cancel" ) );
    m_helpButton->setIconSet( SmallIconSet( "help" ) );
  }

  // create button layout
  m_buttonLayout = new TQHBoxLayout;
  m_buttonLayout->addWidget(m_helpButton);
  m_buttonLayout->addStretch(1);
  m_buttonLayout->addWidget(m_backButton);
  m_buttonLayout->addWidget(m_nextButton);
  m_buttonLayout->addWidget(m_finishButton);
  m_buttonLayout->addWidget(m_cancelButton);

  // create wizard layout
  m_wizardLayout = new TQVBoxLayout(this, 6, 0, "wizardLayout");
  m_titleLabel = new KMyMoneyTitleLabel(this, "titleLabel");
  m_wizardLayout->addWidget(m_titleLabel);

  TQHBoxLayout* hboxLayout = new TQHBoxLayout(0, 0, 6, "hboxLayout");

  // create stage layout and frame
  m_stepFrame = new TQFrame(this, "stepFrame");
  m_stepFrame->setPaletteBackgroundColor(KGlobalSettings::highlightColor());
  m_stepLayout = new TQVBoxLayout(m_stepFrame, 11, 6, "stepLayout");
  m_stepLayout->addWidget(new TQLabel("", m_stepFrame));
  m_stepLayout->addItem(new TQSpacerItem(20, 20, TQSizePolicy::Minimum, TQSizePolicy::Expanding));
  m_stepLabel = new TQLabel(m_stepFrame, "stepLabel");
  m_stepLabel->setAlignment(TQt::AlignHCenter);
  m_stepLayout->addWidget(m_stepLabel);
  hboxLayout->addWidget(m_stepFrame);

  // FIXME use the protected virtual method TQWidget::paletteChange() to update the palette
  // information when the user selected a different color set using the KConfigCenter
  m_stepPalette = m_stepLabel->palette();
  TQColorGroup::ColorRole role = TQColorGroup::Foreground;
  TQColor color = KGlobalSettings::highlightedTextColor();
  m_stepPalette.setColor( TQPalette::Active, role, color );
  m_stepPalette.setColor( TQPalette::Inactive, role, color );
  m_stepPalette.setColor( TQPalette::Disabled, role, color );
  m_stepLabel->setPalette(m_stepPalette);

  // create page layout
  m_pageLayout = new TQVBoxLayout(0, 0, 6, "pageLayout");

  // the page will be inserted later dynamically above this line
  TQFrame* line = new TQFrame( this, "line" );
  line->setFrameShadow( TQFrame::Sunken );
  line->setFrameShape( TQFrame::HLine );
  m_pageLayout->addWidget( line );
  m_pageLayout->addLayout(m_buttonLayout);

  // now glue everything together
  hboxLayout->addLayout(m_pageLayout);
  m_wizardLayout->addLayout(hboxLayout);

  resize(TQSize(770, 520).expandedTo(minimumSizeHint()));
  clearWState(WState_Polished);

  m_titleLabel->setText("No Title specified");
  m_titleLabel->setRightImageFile("pics/titlelabel_background.png");

  m_finishButton->hide();

  connect(m_backButton, TQT_SIGNAL(clicked()), this, TQT_SLOT(backButtonClicked()));
  connect(m_nextButton, TQT_SIGNAL(clicked()), this, TQT_SLOT(nextButtonClicked()));
  connect(m_cancelButton, TQT_SIGNAL(clicked()), this, TQT_SLOT(reject()));
  connect(m_finishButton, TQT_SIGNAL(clicked()), this, TQT_SLOT(accept()));
  connect(m_helpButton, TQT_SIGNAL(clicked()), this, TQT_SLOT(helpButtonClicked()));
}

void KMyMoneyWizard::setTitle(const TQString& txt)
{
  m_titleLabel->setText(txt);
}

void KMyMoneyWizard::addStep(const TQString& text)
{
  TQLabel* step = new TQLabel(text, m_stepFrame);
  step->setFrameStyle(TQFrame::Panel | TQFrame::Raised);
  step->setAlignment(TQt::AlignHCenter);
  step->setFrameStyle(TQFrame::Box | TQFrame::Sunken);
  step->setMargin(2);
  step->setPalette( m_stepPalette );

  m_steps.append(step);
  m_stepLayout->insertWidget(m_steps.count(), step);

  TQFont font(step->font());
  font.setBold(true);
  TQFontMetrics fm(font);
  int w = fm.width(text)+30;
  if(m_stepFrame->minimumWidth() < w) {
    m_stepFrame->setMinimumWidth(w);
  }
}

void KMyMoneyWizard::setStepHidden(unsigned int step, bool hidden)
{
  if((step < 1) || (step > m_steps.count()))
    return;

  m_steps[--step]->setHidden(hidden);
  updateStepCount();
}

void KMyMoneyWizard::selectStep(unsigned int step)
{
  if((step < 1) || (step > m_steps.count()))
    return;

  m_step = step;
  TQValueList<TQLabel*>::iterator it_l;
  TQFont f = m_steps[0]->font();
  for(it_l = m_steps.begin(); it_l != m_steps.end(); ++it_l) {
    f.setBold(false);
    (*it_l)->setFrameStyle(TQFrame::NoFrame);
    if(--step == 0) {
      f.setBold(true);
      (*it_l)->setFrameStyle(TQFrame::Box | TQFrame::Sunken);
    }
    (*it_l)->setFont(f);
  }
  updateStepCount();
}

void KMyMoneyWizard::reselectStep(void)
{
  selectStep(m_step);
}

void KMyMoneyWizard::updateStepCount(void)
{
  TQValueList<TQLabel*>::iterator it_l;
  int stepCount = 0;
  int hiddenAdjust = 0;
  int step = 0;
  for(it_l = m_steps.begin(); it_l != m_steps.end(); ++it_l) {
    if(!(*it_l)->isHidden())
      ++stepCount;
    else if(step < m_step)
      hiddenAdjust++;
    ++step;
  }
  m_stepLabel->setText(i18n("Step %1 of %2").arg(m_step - hiddenAdjust).arg(stepCount));
}

void KMyMoneyWizard::setFirstPage(KMyMoneyWizardPage* page)
{
  page->resetPage();
  m_history.clear();
  m_history.append(page);
  switchPage(0);
}

void KMyMoneyWizard::switchPage(KMyMoneyWizardPage* oldPage)
{
  if(oldPage) {
    oldPage->widget()->hide();
    m_pageLayout->remove(oldPage->widget());
    disconnect(oldPage->object(), TQT_SIGNAL(completeStateChanged()), this, TQT_SLOT(completeStateChanged()));
  }
  KMyMoneyWizardPage* newPage = m_history.back();
  if(newPage) {
    m_pageLayout->insertWidget(0, newPage->widget());
    connect(newPage->object(), TQT_SIGNAL(completeStateChanged()), this, TQT_SLOT(completeStateChanged()));
    newPage->widget()->show();
    selectStep(newPage->step());
    if(newPage->isLastPage()) {
      m_nextButton->setDefault(false);
      m_finishButton->setDefault(true);
    } else {
      m_finishButton->setDefault(false);
      m_nextButton->setDefault(true);
    }
    TQWidget* w = newPage->initialFocusWidget();
    if(w)
      w->setFocus();
  }
  completeStateChanged();
}

void KMyMoneyWizard::backButtonClicked(void)
{
  KMyMoneyWizardPage* oldPage = m_history.back();
  m_history.pop_back();
  oldPage->leavePage();
  oldPage->resetPage();
  switchPage(oldPage);
}

void KMyMoneyWizard::nextButtonClicked(void)
{
  // make sure it is really complete. Some widgets only change state during focusOutEvent,
  // so we just create such an animal by changing the focus to the next button and
  // check again for copmpleness
  m_nextButton->setFocus();
  KMyMoneyWizardPage* oldPage = m_history.back();
  if(oldPage->isComplete()) {
    KMyMoneyWizardPage* newPage = oldPage->nextPage();
    m_history.append(newPage);
    newPage->enterPage();
    newPage->resetPage();
    switchPage(oldPage);
  }
}

void KMyMoneyWizard::helpButtonClicked(void)
{
  KMyMoneyWizardPage* currentPage = m_history.back();
  TQString ctx = currentPage->helpContext();
  if(ctx.isEmpty())
    ctx = m_helpContext;
  kapp->invokeHelp(ctx);
}

void KMyMoneyWizard::completeStateChanged(void)
{
  KMyMoneyWizardPage* currentPage = m_history.back();
  bool lastPage = currentPage->isLastPage();

  m_finishButton->setShown(lastPage);
  m_nextButton->setShown(!lastPage);

  KPushButton* button;

  button = lastPage ? m_finishButton : m_nextButton;

  bool rc = currentPage->isComplete();
  button->setEnabled(rc);

  m_backButton->setEnabled(m_history.count() > 1);
}

void KMyMoneyWizard::accept(void)
{
  // make sure it is really complete. Some widgets only change state during focusOutEvent,
  // so we just create such an animal by changing the focus to the finish button and
  // check again for completeness.
  m_finishButton->setFocus();
  KMyMoneyWizardPage* page = m_history.back();
  if(page->isComplete())
    TQDialog::accept();
}

#include "kmymoneywizard.moc"