// This file is part of RSS Guard.
//
// Copyright (C) 2011-2017 by Martin Rotter <rotter.martinos@gmail.com>
//
// RSS Guard 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.
//
// RSS Guard 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 RSS Guard. If not, see <http://www.gnu.org/licenses/>.

#ifndef WEBBROWSER_H
#define WEBBROWSER_H

#include "gui/tabcontent.h"

#include "core/message.h"
#include "network-web/webpage.h"
#include "services/abstract/rootitem.h"

#include <QPointer>
#include <QToolBar>


class QToolButton;
class QVBoxLayout;
class QHBoxLayout;
class QProgressBar;
class QMenu;
class QLabel;
class TabWidget;
class WebViewer;
class LocationLineEdit;
class DiscoverFeedsButton;

class WebBrowser : public TabContent {
		Q_OBJECT

	public:
		explicit WebBrowser(QWidget* parent = 0);
		virtual ~WebBrowser();

		WebBrowser* webBrowser() const {
			return const_cast<WebBrowser*>(this);
		}

		WebViewer* viewer() const {
			return m_webView;
		}

		void reloadFontSettings();

	public slots:
		void increaseZoom();
		void decreaseZoom();
		void resetZoom();

		void clear();
		void loadUrl(const QString& url);
		void loadUrl(const QUrl& url);
		void loadMessages(const QList<Message>& messages, RootItem* root);
		void loadMessage(const Message& message, RootItem* root);

		// Switches visibility of navigation bar.
		inline void setNavigationBarVisible(bool visible) {
			m_toolBar->setVisible(visible);
		}

	private slots:
		void updateUrl(const QUrl& url);

		void onLoadingStarted();
		void onLoadingProgress(int progress);
		void onLoadingFinished(bool success);

		void receiveMessageStatusChangeRequest(int message_id, WebPage::MessageStatusChange change);

		void onTitleChanged(const QString& new_title);

#if QT_VERSION >= 0x050700
		void onIconChanged(const QIcon& icon);
#endif

	signals:
		// Title/icon is changed.
		void iconChanged(int index, const QIcon& icon);
		void titleChanged(int index, const QString& title);

		void markMessageRead(int id, RootItem::ReadStatus read);
		void markMessageImportant(int id, RootItem::Importance important);
		void requestMessageListReload(bool mark_current_as_read);

	private:
		void initializeLayout();
		Message* findMessage(int id);
		void markMessageAsRead(int id, bool read);
		void switchMessageImportance(int id, bool checked);
		void createConnections();

		QVBoxLayout* m_layout;
		QToolBar* m_toolBar;
		WebViewer* m_webView;
		LocationLineEdit* m_txtLocation;
		DiscoverFeedsButton* m_btnDiscoverFeeds;
		QProgressBar* m_loadingProgress;

		QAction* m_actionBack;
		QAction* m_actionForward;
		QAction* m_actionReload;
		QAction* m_actionStop;

		QList<Message> m_messages;
		QPointer<RootItem> m_root;
};

#endif // WEBBROWSER_H