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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "contentwindow.h"
#include "centralwidget.h"
#include "helpenginewrapper.h"
#include "helpviewer.h"
#include "openpagesmanager.h"
#include "tracer.h"
#include <QtWidgets/QLayout>
#include <QtGui/QFocusEvent>
#include <QtWidgets/QMenu>
#include <QtHelp/QHelpContentWidget>
QT_BEGIN_NAMESPACE
ContentWindow::ContentWindow()
: m_contentWidget(HelpEngineWrapper::instance().contentWidget())
, m_expandDepth(-2)
{
TRACE_OBJ
m_contentWidget->viewport()->installEventFilter(this);
m_contentWidget->setContextMenuPolicy(Qt::CustomContextMenu);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setContentsMargins(4, 4, 4, 4);
layout->addWidget(m_contentWidget);
connect(m_contentWidget, &QWidget::customContextMenuRequested,
this, &ContentWindow::showContextMenu);
connect(m_contentWidget, &QHelpContentWidget::linkActivated,
this, &ContentWindow::linkActivated);
QHelpContentModel *contentModel =
qobject_cast<QHelpContentModel*>(m_contentWidget->model());
connect(contentModel, &QHelpContentModel::contentsCreated,
this, &ContentWindow::expandTOC);
}
ContentWindow::~ContentWindow()
{
TRACE_OBJ
}
bool ContentWindow::syncToContent(const QUrl& url)
{
TRACE_OBJ
QModelIndex idx = m_contentWidget->indexOf(url);
if (!idx.isValid())
return false;
m_contentWidget->setCurrentIndex(idx);
m_contentWidget->scrollTo(idx);
return true;
}
void ContentWindow::expandTOC()
{
TRACE_OBJ
Q_ASSERT(m_expandDepth >= -2);
if (m_expandDepth > -2) {
expandToDepth(m_expandDepth);
m_expandDepth = -2;
}
}
void ContentWindow::expandToDepth(int depth)
{
TRACE_OBJ
Q_ASSERT(depth >= -2);
m_expandDepth = depth;
if (depth == -1)
m_contentWidget->expandAll();
else if (depth == 0)
m_contentWidget->collapseAll();
else
m_contentWidget->expandToDepth(depth - 1);
}
void ContentWindow::focusInEvent(QFocusEvent *e)
{
TRACE_OBJ
if (e->reason() != Qt::MouseFocusReason)
m_contentWidget->setFocus();
}
void ContentWindow::keyPressEvent(QKeyEvent *e)
{
TRACE_OBJ
if (e->key() == Qt::Key_Escape)
emit escapePressed();
}
bool ContentWindow::eventFilter(QObject *o, QEvent *e)
{
TRACE_OBJ
if (m_contentWidget && o == m_contentWidget->viewport()
&& e->type() == QEvent::MouseButtonRelease) {
QMouseEvent *me = static_cast<QMouseEvent*>(e);
const QModelIndex &index = m_contentWidget->indexAt(me->pos());
if (!index.isValid())
return QWidget::eventFilter(o, e);
const Qt::MouseButtons button = me->button();
QItemSelectionModel *sm = m_contentWidget->selectionModel();
if (sm->isSelected(index)) {
if ((button == Qt::LeftButton && (me->modifiers() & Qt::ControlModifier))
|| (button == Qt::MiddleButton)) {
QHelpContentModel *contentModel =
qobject_cast<QHelpContentModel*>(m_contentWidget->model());
if (contentModel) {
QHelpContentItem *itm = contentModel->contentItemAt(index);
if (itm && HelpViewer::canOpenPage(itm->url().path()))
OpenPagesManager::instance()->createPage(itm->url());
}
} else if (button == Qt::LeftButton) {
itemClicked(index);
}
}
}
return QWidget::eventFilter(o, e);
}
void ContentWindow::showContextMenu(const QPoint &pos)
{
TRACE_OBJ
if (!m_contentWidget->indexAt(pos).isValid())
return;
QHelpContentModel *contentModel =
qobject_cast<QHelpContentModel*>(m_contentWidget->model());
QHelpContentItem *itm =
contentModel->contentItemAt(m_contentWidget->currentIndex());
QMenu menu;
QAction *curTab = menu.addAction(tr("Open Link"));
QAction *newTab = menu.addAction(tr("Open Link in New Tab"));
if (!HelpViewer::canOpenPage(itm->url().path()))
newTab->setEnabled(false);
menu.move(m_contentWidget->mapToGlobal(pos));
QAction *action = menu.exec();
if (curTab == action)
emit linkActivated(itm->url());
else if (newTab == action)
OpenPagesManager::instance()->createPage(itm->url());
}
void ContentWindow::itemClicked(const QModelIndex &index)
{
TRACE_OBJ
QHelpContentModel *contentModel =
qobject_cast<QHelpContentModel*>(m_contentWidget->model());
if (contentModel) {
if (QHelpContentItem *itm = contentModel->contentItemAt(index)) {
const QUrl &url = itm->url();
if (url != CentralWidget::instance()->currentSource())
emit linkActivated(url);
}
}
}
QT_END_NAMESPACE
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