#include <QtWidgets>
#include "pdf_table_widget.h"
#include "pdf_page_widget.h"
#include "pdf_file_widget.h"

PDFTableWidget::PDFTableWidget(QWidget* parent) : QFrame(parent) {
  /* Frame (Expanding with VBox) - Scroll Area (Expanding)
   * Container (Expanding with VBox) - Children.
   */
  setFrameStyle(QFrame::StyledPanel | QFrame::Plain);
  setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

  outerLayout = new QVBoxLayout();
  outerLayout->setContentsMargins(0, 0, 0, 0);

  scrollArea = new QScrollArea();
  scrollArea->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  scrollArea->setWidgetResizable(true);

  containerLayout = new QVBoxLayout();
  containerWidget = new QWidget();
  containerWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  QWidget* spacer = new QWidget();
  spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  containerLayout->addWidget(spacer);
  containerWidget->setLayout(containerLayout);

  scrollArea->setWidget(containerWidget);

  outerLayout->addWidget(scrollArea);
  
  setLayout(outerLayout);
}

void PDFTableWidget::loadFile(QString fileName) {
  Poppler::Document* doc = Poppler::Document::load(fileName);
  files.append(doc);
  
  PDFFileWidget* fileWidget = new PDFFileWidget();
  fileWidget->setAncestor(this);
  fileWidget->setDocument(doc, fileName);
  connect(fileWidget, SIGNAL(pageClicked(QMouseEvent*,QImage)), this,
          SIGNAL(pageClicked(QMouseEvent*,QImage)));
  connect(fileWidget, SIGNAL(previewUpdate(Poppler::Page*)), this,
          SIGNAL(previewUpdate(Poppler::Page*)));

  fileWidgets.append(fileWidget);

  fileNames.append(fileName);

  containerLayout->insertWidget(containerLayout->count()-1, fileWidget);
}