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#include "gui/character_pad/result_list.h"

#include <QtCore/QStringList>
#include <QtGui/QtGui>
#include "gui/character_pad/selection_handler.h"
#include "gui/character_pad/unicode_util.h"

namespace mozc {
namespace gui {

ResultList::ResultList(QWidget *parent)
    : QListWidget(parent) {
  setFlow(ResultList::LeftToRight);
  setWrapping(true);
  setMouseTracking(true);
  setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  setMouseTracking(true);
  setSelectionMode(QAbstractItemView::SingleSelection);
  setSelectionBehavior(QAbstractItemView::SelectItems);
  setAutoScroll(false);
}

// redaraw items
void ResultList::update() {
  QStringList tmp;
  for (int i = 0; i < count(); ++i) {
    tmp << item(i)->text();
  }
  clear();
  for (int i = 0; i < tmp.size(); ++i) {
    addItem(tmp.at(i));
  }
  QListWidget::update();
}

void ResultList::mouseReleaseEvent(QMouseEvent *event) {
  if (event->button() != Qt::LeftButton) {
    return;
  }
  const QListWidgetItem *item = itemAt(event->pos());
  if (item == NULL) {
    return;
  }
  SelectionHandler::Select(item->text());
  emit itemSelected(item);
}

void ResultList::mouseMoveEvent(QMouseEvent *event) {
  QListWidgetItem *item = itemAt(event->pos());
  if (item == NULL) {
    return;
  }
  setCurrentItem(item);
  QListWidget::mousePressEvent(event);
  QToolTip::showText(event->globalPos(),
                     UnicodeUtil::GetToolTip(font(), item->text()),
                     this);
}

void ResultList::updateFont(const QFont &font) {
  QFont new_font = font;
  new_font.setPointSize(this->font().pointSize());
  setFont(new_font);
  adjustSize();
  update();
}

void ResultList::updateFontSize(int index) {
  int font_point = 20;
  switch (index) {
    case 0: font_point = 32; break;
    case 1: font_point = 28; break;
    case 2: font_point = 20; break;
    case 3: font_point = 18; break;
    case 4: font_point = 16; break;
  }

  QFont nfont = font();
  nfont.setPointSize(font_point);
  setFont(nfont);
  adjustSize();
  update();
}
}  // namespace gui
}  // namespace mozc