#include "presentcontainerview.h"
#include "DocsManager.h"
#include "welcomepanel.h"

#include <QApplication>
#include <QComboBox>
#include <QGridLayout>
#include <QMenu>
#include <QPushButton>

using namespace Components;
using namespace Core;
using namespace SplitFrame;
using namespace Presents;

PresentContainerView::PresentContainerView(ViewPresent *host, QWidget *parent)
    : FnWrap<PresentContainerView, true>(host, parent),
      title_store(new QComboBox(this)),
      stack_container(new QStackedWidget(this)),
      welcome_list(new WelcomePanel(this)),
      close_btn(new QPushButton("X", this)) {
    auto layout = new QGridLayout(this);
    layout->setSpacing(0);
    layout->setMargin(0);

    layout->addWidget(title_store, 0, 0, 1, 3);
    layout->addWidget(close_btn, 0, 3);
    close_btn->setMaximumSize(QSize(30, 30));

    items_store << welcome_list;
    stack_container->addWidget(welcome_list->widget());
    title_store->addItem(welcome_list->name());

    layout->setRowStretch(0, 0);
    layout->setRowStretch(1, 1);
    layout->setColumnStretch(0, 1);
    layout->setColumnStretch(1, 1);
    layout->setColumnStretch(2, 1);
    layout->setColumnStretch(3, 0);

    connect(title_store, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &PresentContainerView::change_view);
    connect(close_btn, &QPushButton::toggled, this, &PresentContainerView::close_current_view);
}

QWidget *PresentContainerView::hostWidget() const { return (QWidget *)this; }

#include <libConfig.h>
using namespace Config;

void PresentContainerView::append(FilePresent *ins) {
    if (!items_store.contains(ins)) {
        items_store.append(ins);
        title_store->addItem(ins->name());
        stack_container->addWidget(ins->widget());
    }

    throw new SimpleException<bool>("非法操作", "重复添加视图：" + ins->name());
}

bool PresentContainerView::active(const FilePresent *ins) {
    if (!items_store.contains(ins))
        return false;

    auto index = items_store.indexOf(ins);
    title_store->setCurrentIndex(index);
    title_store->setItemText(index, ins->name());
    stack_container->setCurrentIndex(index);
    return true;
}

void PresentContainerView::remove(const FilePresent *ins) {
    if (!items_store.contains(ins))
        return;

    auto index = items_store.indexOf(ins);
    items_store.removeAt(index);
    title_store->removeItem(index);
    stack_container->removeWidget(ins->widget());
}

bool PresentContainerView::contains(const FilePresent *ins) const {
    for (auto &insit : items_store) {
        if (insit == ins)
            return true;
    }
    return false;
}

bool PresentContainerView::avaliable(FilePresent *vins) {
    if (!QApplication::activeWindow())
        return true;
    return this->hasFocus();
}

void PresentContainerView::change_view(int view_index) {
    auto view_inst = items_store[view_index];
    active(view_inst);

    close_btn->setEnabled(view_index);
}

#include <QMessageBox>
void PresentContainerView::close_current_view() {
    auto index = title_store->currentIndex();
    const_cast<FilePresent *>(items_store[index])->beforeClose();
}