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 /* ============================================================
 * Falkon - Qt web browser
 * Copyright (C) 2010-2018 David Rosca <nowrep@gmail.com>
 *
 * 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * ============================================================ */
 #include "siteicon.h"
 #include "siteinfowidget.h"
 #include "locationbar.h"
 #include "tabbedwebview.h"
 #include "qztools.h"
 #include "siteinfo.h"
 
 #include <QDrag>
 #include <QTimer>
 #include <QMimeData>
 #include <QApplication>
 #include <QContextMenuEvent>
 
 SiteIcon::SiteIcon(LocationBar *parent)
     : ToolButton(parent)
     , m_window(nullptr)
     , m_locationBar(parent)
     , m_view(nullptr)
 {
     setObjectName("locationbar-siteicon");
     setToolButtonStyle(Qt::ToolButtonIconOnly);
     setCursor(Qt::ArrowCursor);
     setToolTip(LocationBar::tr("Show information about this page"));
     setFocusPolicy(Qt::NoFocus);
 
     m_updateTimer = new QTimer(this);
     m_updateTimer->setInterval(100);
     m_updateTimer->setSingleShot(true);
     connect(m_updateTimer, &QTimer::timeout, this, &SiteIcon::updateIcon);
 }
 
 void SiteIcon::setBrowserWindow(BrowserWindow *window)
 {
     m_window = window;
 }
 
 void SiteIcon::setWebView(WebView* view)
 {
     m_view = view;
 }
 
 void SiteIcon::setIcon(const QIcon &icon)
 {
     bool wasNull = m_icon.isNull();
 
     m_icon = icon;
 
     if (wasNull) {
         updateIcon();
     }
     else {
         m_updateTimer->start();
     }
 }
 
 void SiteIcon::updateIcon()
 {
     ToolButton::setIcon(m_icon);
 }
 
 void SiteIcon::popupClosed()
 {
     setDown(false);
 }
 
 void SiteIcon::contextMenuEvent(QContextMenuEvent* e)
 {
     // Prevent propagating to LocationBar
     e->accept();
 }
 
 void SiteIcon::mousePressEvent(QMouseEvent* e)
 {
     if (e->buttons() == Qt::LeftButton) {
         m_dragStartPosition = e->pos();
     }
 
     // Prevent propagating to LocationBar
     e->accept();
 
     ToolButton::mousePressEvent(e);
 }
 
 void SiteIcon::mouseReleaseEvent(QMouseEvent* e)
 {
     // Mouse release event is restoring Down state
     // So we pause updates to prevent flicker
 
     bool activated = false;
 
     if (e->button() == Qt::LeftButton && rect().contains(e->pos())) {
         // Popup may not be always shown, eg. on falkon: pages
         activated = showPopup();
     }
 
     if (activated) {
         setUpdatesEnabled(false);
     }
 
     ToolButton::mouseReleaseEvent(e);
 
     if (activated) {
         setDown(true);
         setUpdatesEnabled(true);
     }
 }
 
 void SiteIcon::mouseMoveEvent(QMouseEvent* e)
 {
     if (!m_locationBar || e->buttons() != Qt::LeftButton) {
         ToolButton::mouseMoveEvent(e);
         return;
     }
 
     int manhattanLength = (e->pos() - m_dragStartPosition).manhattanLength();
     if (manhattanLength <= QApplication::startDragDistance()) {
         ToolButton::mouseMoveEvent(e);
         return;
     }
 
     const QUrl url = m_locationBar->webView()->url();
     const QString title = m_locationBar->webView()->title();
 
     if (url.isEmpty() || title.isEmpty()) {
         ToolButton::mouseMoveEvent(e);
         return;
     }
 
     auto* drag = new QDrag(this);
     auto* mime = new QMimeData;
     mime->setUrls(QList<QUrl>() << url);
     mime->setText(title);
     mime->setImageData(icon().pixmap(16).toImage());
 
     drag->setMimeData(mime);
     drag->setPixmap(QzTools::createPixmapForSite(icon(), title, url.toString()));
     drag->exec();
 
     // Restore Down state
     setDown(false);
 }
 
 bool SiteIcon::showPopup()
 {
     if (!m_view || !m_window) {
         return false;
     }
 
     QUrl url = m_view->url();
 
     if (!SiteInfo::canShowSiteInfo(url))
         return false;
 
     setDown(true);
 
     auto* info = new SiteInfoWidget(m_window);
     info->showAt(parentWidget());
 
     connect(info, &QObject::destroyed, this, &SiteIcon::popupClosed);
 
     return true;
 }