/*
 * tabbable.cpp
 * Copyright (C) 2007 Kevin Smith
 *
 * 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 2
 * 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 */

#include "tabbablewidget.h"
#include "tabmanager.h"
#include "tabdlg.h"
#include "jidutil.h"
#include "groupchatdlg.h"
#include "psioptions.h"
#include <QTimer>


#ifdef Q_OS_WIN
#include <windows.h>
#endif

//----------------------------------------------------------------------------
// TabbableWidget
//----------------------------------------------------------------------------

TabbableWidget::TabbableWidget(const Jid &jid, PsiAccount *pa, TabManager *tabManager)
	: AdvancedWidget<QWidget>(0)
	, state_(Deactivated)
	, jid_(jid)
	, pa_(pa)
	, tabManager_(tabManager)
{
	stateCommitTimer_.setInterval(100);
	stateCommitTimer_.setSingleShot(true);
	connect(&stateCommitTimer_, SIGNAL(timeout()), SLOT(commitState()));

	if (TabbableWidget::chatsCount == 0) {
		TabbableWidget::templateMenu = new SendButtonTemplatesMenu(NULL);
		TabbableWidget::templateMenu->setParams(false);
		TabbableWidget::templateMenu->setStyleSheet(PsiOptions::instance()->getOption("options.ui.chat.css").toString());
	}
	++TabbableWidget::chatsCount;
	//QTimer::singleShot(0, this, SLOT(ensureTabbedCorrectly()));
}

void TabbableWidget::ensureTabbedCorrectly()
{
	if (tabManager_->shouldBeTabbed(this)) {
		if (!isTabbed()) {
			tabManager_->getTabs(this)->addTab(this);
		}
		else {
			QTimer::singleShot(0, tabManager_->getTabs(this), SLOT(showTabWithoutActivation()));
		}
	}
	else {
		if (PsiOptions::instance()->getOption("options.ui.tabs.tab-singles").toString().contains(tabManager_->tabKind(this))) {
			if (isTabbed()) {
				if (getManagingTabDlg()->tabCount() > 1) {
					getManagingTabDlg()->closeTab(this, false);
					tabManager_->newTabs(this)->addTab(this);
				}
			}
			else {
				tabManager_->newTabs(this)->addTab(this);
			}
		}
		else {
			if (isTabbed()) {
				getManagingTabDlg()->closeTab(this, false);
			}

			// FIXME: showWithoutActivation() works on all
			//   platforms, but bringToFront() (which might be
			//   called immediately after) does not work on all
			//   platforms if it follows a call to
			//   showWithoutActivation().  As a temporary fix, we
			//   will only call showWithoutActivation() on
			//   platforms where both calls can be made in
			//   succession.
#ifdef Q_OS_WIN
			showWithoutActivation();
#else
			show();
#endif
		}
	}
}

void TabbableWidget::bringToFront(bool raiseWindow)
{
	if (isTabbed()) {
		getManagingTabDlg()->selectTab(this);
	}
	if (raiseWindow) {
		::bringToFront(this);
	}
}

TabbableWidget::~TabbableWidget()
{
	if (isTabbed()) {
		getManagingTabDlg()->removeTabWithNoChecks(this);
	}
	--TabbableWidget::chatsCount;
	if (TabbableWidget::chatsCount == 0) {
		if (TabbableWidget::templateMenu != NULL) {
			delete TabbableWidget::templateMenu;
			TabbableWidget::templateMenu = NULL;
		}
		if (!TabbableWidget::templateEditDlg.isNull()) {
			delete (TabbableWidget::templateEditDlg);
			TabbableWidget::templateEditDlg = NULL;
		}
	}
}

int TabbableWidget::chatsCount = 0;
SendButtonTemplatesMenu *TabbableWidget::templateMenu = NULL;
QPointer<SendButtonTemplatesEditor> TabbableWidget::templateEditDlg = NULL;

SendButtonTemplatesMenu* TabbableWidget::getTemplateMenu()
{
	return TabbableWidget::templateMenu;
}

void TabbableWidget::showTemplateEditor()
{
	bool new_window = false;
	if (TabbableWidget::templateEditDlg.isNull()) {
		new_window = true;
		TabbableWidget::templateEditDlg = new SendButtonTemplatesEditor(NULL);
		if (TabbableWidget::templateMenu) {
			TabbableWidget::templateEditDlg->setStyleSheet(PsiOptions::instance()->getOption("options.ui.chat.css").toString());
			connect(TabbableWidget::templateEditDlg.data(), SIGNAL(accepted()), TabbableWidget::templateMenu, SLOT(update()));
		}
	}
	TabbableWidget::templateEditDlg->show();
	if (!new_window)
		::bringToFront(TabbableWidget::templateEditDlg);
}

/**
 * Checks if the dialog is in a tabset
 */
bool TabbableWidget::isTabbed()
{
	return tabManager_->isChatTabbed(this);
}

TabDlg* TabbableWidget::getManagingTabDlg()
{
	return tabManager_->getManagingTabs(this);
}

/**
 * Runs any gumph necessary before hiding a tab.
 * (checking new messages, setting the autodelete, cancelling composing etc)
 * \return TabbableWidget is ready to be hidden.
 */
bool TabbableWidget::readyToHide()
{
	return true;
}

Jid TabbableWidget::jid() const
{
	return jid_;
}

void TabbableWidget::setJid(const Jid& j)
{
	jid_ = j;
}

const QString& TabbableWidget::getDisplayName()
{
	return jid_.node();
}

void TabbableWidget::deactivated()
{
}

void TabbableWidget::activated()
{
}

/**
 * Returns true if this tab is active in the active window.
 */
bool TabbableWidget::isActiveTab()
{
	if (isHidden()) {
		return false;
	}
	if (!isTabbed()) {
		return isActiveWindow() && !isMinimized();
	}
	return getManagingTabDlg()->isActiveWindow() &&
	       getManagingTabDlg()->tabOnTop(this) &&
	      !getManagingTabDlg()->isMinimized();
}

void TabbableWidget::doFlash(bool on)
{
	AdvancedWidget<QWidget>::doFlash(on);
	emit updateFlashState();
}

TabbableWidget::State TabbableWidget::state() const
{
	return TabbableWidget::StateNone;
}

int TabbableWidget::unreadMessageCount() const
{
	return 0;
}

/**
 * Use this to invalidate tab state.
 */
void TabbableWidget::invalidateTab()
{
	setWindowTitle(desiredCaption());
	emit invalidateTabInfo();
}

PsiAccount* TabbableWidget::account() const
{
	return pa_;
}

void TabbableWidget::changeEvent(QEvent* event)
{
	AdvancedWidget<QWidget>::changeEvent(event);

	if (event->type() == QEvent::ActivationChange ||
	    event->type() == QEvent::WindowStateChange)
	{
		if (isActiveTab()) {
			state_ = Activated;
		}
		else {
			state_ = Deactivated;
		}
		stateCommitTimer_.start();
	}
}

void TabbableWidget::commitState()
{
	if(state_ == Activated) {
		activated();
	}
	else {
		deactivated();
	}
}

/**
 * Set the icon of the tab.
 */
void TabbableWidget::setTabIcon(const QIcon &icon)
{
	icon_ = icon;
	TabDlg* tabDlg = tabManager_->getManagingTabs(this);
	if (tabDlg) {
		tabDlg->setTabIcon(this, icon);
	}
}

const QIcon &TabbableWidget::icon() const
{
	return icon_;
}

void TabbableWidget::hideTab()
{
	if(isTabbed())
		getManagingTabDlg()->hideTab(this);
	else
		hide();
}
