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// SPDX-FileCopyrightText: 2021 Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later
#include "ui/TextLabel.h"
#include <QAbstractTextDocumentLayout>
#include <QDesktopServices>
#include <QEvent>
#include <QWheelEvent>
#include "Utils.h"
bool
ContextMenuFilter::eventFilter(QObject *obj, QEvent *event)
{
if (event->type() == QEvent::MouseButtonPress) {
emit contextMenuIsOpening();
return true;
}
return QObject::eventFilter(obj, event);
}
TextLabel::TextLabel(QWidget *parent)
: TextLabel(QString(), parent)
{}
TextLabel::TextLabel(const QString &text, QWidget *parent)
: QTextBrowser(parent)
{
document()->setDefaultStyleSheet(QString("a {color: %1; }").arg(utils::linkColor()));
setText(text);
setOpenExternalLinks(true);
// Make it look and feel like an ordinary label.
setReadOnly(true);
setFrameStyle(QFrame::NoFrame);
QPalette pal = palette();
pal.setColor(QPalette::Base, Qt::transparent);
setPalette(pal);
// Wrap anywhere but prefer words, adjust minimum height on the fly.
setLineWrapMode(QTextEdit::WidgetWidth);
setWordWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
connect(document()->documentLayout(),
&QAbstractTextDocumentLayout::documentSizeChanged,
this,
&TextLabel::adjustHeight);
document()->setDocumentMargin(0);
setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
setFixedHeight(0);
connect(this, &TextLabel::linkActivated, this, &TextLabel::handleLinkActivation);
auto filter = new ContextMenuFilter(this);
installEventFilter(filter);
connect(filter, &ContextMenuFilter::contextMenuIsOpening, this, [this]() {
contextMenuRequested_ = true;
});
}
void
TextLabel::focusOutEvent(QFocusEvent *e)
{
QTextBrowser::focusOutEvent(e);
// We keep the selection available for the context menu.
if (contextMenuRequested_) {
contextMenuRequested_ = false;
return;
}
QTextCursor cursor = textCursor();
cursor.clearSelection();
setTextCursor(cursor);
}
void
TextLabel::mousePressEvent(QMouseEvent *e)
{
link_ = (e->button() & Qt::LeftButton) ? anchorAt(e->pos()) : QString();
QTextBrowser::mousePressEvent(e);
}
void
TextLabel::mouseReleaseEvent(QMouseEvent *e)
{
if (e->button() & Qt::LeftButton && !link_.isEmpty() && anchorAt(e->pos()) == link_) {
emit linkActivated(link_);
return;
}
QTextBrowser::mouseReleaseEvent(e);
}
void
TextLabel::wheelEvent(QWheelEvent *event)
{
event->ignore();
}
void
TextLabel::handleLinkActivation(const QUrl &url)
{
auto parts = url.toString().split('/');
auto defaultHandler = [](const QUrl &url) { QDesktopServices::openUrl(url); };
if (url.host() != "matrix.to" || parts.isEmpty())
return defaultHandler(url);
try {
using namespace mtx::identifiers;
parse<User>(parts.last().toStdString());
} catch (const std::exception &) {
return defaultHandler(url);
}
emit userProfileTriggered(parts.last());
}
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