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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Assistant of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qhelpsearchresultwidget.h"
#include <QtCore/QList>
#include <QtCore/QString>
#include <QtCore/QPointer>
#include <QtCore/QStringList>
#include <QtWidgets/QLabel>
#include <QtWidgets/QLayout>
#include <QtGui/QMouseEvent>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QSpacerItem>
#include <QtWidgets/QToolButton>
#include <QtWidgets/QTreeWidget>
#include <QtWidgets/QTextBrowser>
#include <QtWidgets/QTreeWidgetItem>
QT_BEGIN_NAMESPACE
class QResultWidget : public QTextBrowser
{
Q_OBJECT
public:
QResultWidget(QWidget *parent = 0)
: QTextBrowser(parent)
{
connect(this, &QTextBrowser::anchorClicked,
this, &QResultWidget::requestShowLink);
setContextMenuPolicy(Qt::NoContextMenu);
}
void showResultPage(const QVector<QHelpSearchResult> results, bool isIndexing)
{
QString htmlFile = QString(QLatin1String("<html><head><title>%1"
"</title></head><body>")).arg(tr("Search Results"));
const int count = results.count();
if (count != 0) {
if (isIndexing)
htmlFile += QString(QLatin1String("<div style=\"text-align:left;"
" font-weight:bold; color:red\">"
"%1 <span style=\"font-weight:normal; color:black\">"
"%2</span></div></div><br>")).arg(tr("Note:"))
.arg(tr("The search results may not be complete since the "
"documentation is still being indexed."));
for (const QHelpSearchResult &result : results) {
htmlFile += QString(QLatin1String("<div style=\"text-align:left;"
" font-weight:bold\"><a href=\"%1\">%2</a>"
"<div style=\"color:green; font-weight:normal;"
" margin:5px\">%3</div></div><p></p>"))
.arg(result.url().toString(), result.title(),
result.snippet());
}
} else {
htmlFile += QLatin1String("<div align=\"center\"><br><br><h2>")
+ tr("Your search did not match any documents.")
+ QLatin1String("</h2><div>");
if (isIndexing)
htmlFile += QLatin1String("<div align=\"center\"><h3>")
+ tr("(The reason for this might be that the documentation "
"is still being indexed.)")
+ QLatin1String("</h3><div>");
}
htmlFile += QLatin1String("</body></html>");
setHtml(htmlFile);
}
signals:
void requestShowLink(const QUrl &url);
private slots:
void setSource(const QUrl & /* name */) override {}
};
class QHelpSearchResultWidgetPrivate : public QObject
{
Q_OBJECT
private slots:
void setResults(int hitsCount)
{
if (!searchEngine.isNull()) {
showFirstResultPage();
updateNextButtonState((hitsCount > 20) ? true : false);
}
}
void showNextResultPage()
{
if (!searchEngine.isNull()
&& resultLastToShow < searchEngine->searchResultCount()) {
resultLastToShow += 20;
resultFirstToShow += 20;
resultTextBrowser->showResultPage(searchEngine->searchResults(resultFirstToShow,
resultLastToShow), isIndexing);
if (resultLastToShow >= searchEngine->searchResultCount())
updateNextButtonState(false);
}
updateHitRange();
}
void showLastResultPage()
{
if (!searchEngine.isNull()) {
resultLastToShow = searchEngine->searchResultCount();
resultFirstToShow = resultLastToShow - (resultLastToShow % 20);
if (resultFirstToShow == resultLastToShow)
resultFirstToShow -= 20;
resultTextBrowser->showResultPage(searchEngine->searchResults(resultFirstToShow,
resultLastToShow), isIndexing);
updateNextButtonState(false);
}
updateHitRange();
}
void showFirstResultPage()
{
if (!searchEngine.isNull()) {
resultLastToShow = 20;
resultFirstToShow = 0;
resultTextBrowser->showResultPage(searchEngine->searchResults(resultFirstToShow,
resultLastToShow), isIndexing);
updatePrevButtonState(false);
}
updateHitRange();
}
void showPreviousResultPage()
{
if (!searchEngine.isNull()) {
int count = resultLastToShow % 20;
if (count == 0 || resultLastToShow != searchEngine->searchResultCount())
count = 20;
resultLastToShow -= count;
resultFirstToShow = resultLastToShow - 20;
resultTextBrowser->showResultPage(searchEngine->searchResults(resultFirstToShow,
resultLastToShow), isIndexing);
if (resultFirstToShow == 0)
updatePrevButtonState(false);
}
updateHitRange();
}
void updatePrevButtonState(bool state = true)
{
firstResultPage->setEnabled(state);
previousResultPage->setEnabled(state);
}
void updateNextButtonState(bool state = true)
{
nextResultPage->setEnabled(state);
lastResultPage->setEnabled(state);
}
void indexingStarted()
{
isIndexing = true;
}
void indexingFinished()
{
isIndexing = false;
}
private:
QHelpSearchResultWidgetPrivate(QHelpSearchEngine *engine)
: QObject()
, searchEngine(engine)
{
connect(searchEngine.data(), &QHelpSearchEngine::indexingStarted,
this, &QHelpSearchResultWidgetPrivate::indexingStarted);
connect(searchEngine.data(), &QHelpSearchEngine::indexingFinished,
this, &QHelpSearchResultWidgetPrivate::indexingFinished);
}
~QHelpSearchResultWidgetPrivate()
{
delete searchEngine;
}
QToolButton* setupToolButton(const QString &iconPath)
{
QToolButton *button = new QToolButton();
button->setEnabled(false);
button->setAutoRaise(true);
button->setIcon(QIcon(iconPath));
button->setIconSize(QSize(12, 12));
button->setMaximumSize(QSize(16, 16));
return button;
}
void updateHitRange()
{
int last = 0;
int first = 0;
int count = 0;
if (!searchEngine.isNull()) {
count = searchEngine->searchResultCount();
if (count > 0) {
first = resultFirstToShow + 1;
last = resultLastToShow > count ? count : resultLastToShow;
}
}
hitsLabel->setText(QHelpSearchResultWidget::tr("%1 - %2 of %n Hits", 0, count).arg(first).arg(last));
}
private:
friend class QHelpSearchResultWidget;
QPointer<QHelpSearchEngine> searchEngine;
QResultWidget *resultTextBrowser = nullptr;
int resultLastToShow = 20;
int resultFirstToShow = 0;
bool isIndexing = false;
QToolButton *firstResultPage = nullptr;
QToolButton *previousResultPage = nullptr;
QLabel *hitsLabel = nullptr;
QToolButton *nextResultPage = nullptr;
QToolButton *lastResultPage = nullptr;
};
#include "qhelpsearchresultwidget.moc"
/*!
\class QHelpSearchResultWidget
\since 4.4
\inmodule QtHelp
\brief The QHelpSearchResultWidget class provides a text browser to display
search results.
*/
/*!
\fn void QHelpSearchResultWidget::requestShowLink(const QUrl &link)
This signal is emitted when a item is activated and its associated
\a link should be shown.
*/
QHelpSearchResultWidget::QHelpSearchResultWidget(QHelpSearchEngine *engine)
: QWidget(0)
, d(new QHelpSearchResultWidgetPrivate(engine))
{
QVBoxLayout *vLayout = new QVBoxLayout(this);
vLayout->setMargin(0);
vLayout->setSpacing(0);
QHBoxLayout *hBoxLayout = new QHBoxLayout();
#ifndef Q_OS_MAC
hBoxLayout->setMargin(0);
hBoxLayout->setSpacing(0);
#endif
hBoxLayout->addWidget(d->firstResultPage = d->setupToolButton(
QString::fromUtf8(":/qt-project.org/assistant/images/3leftarrow.png")));
hBoxLayout->addWidget(d->previousResultPage = d->setupToolButton(
QString::fromUtf8(":/qt-project.org/assistant/images/1leftarrow.png")));
d->hitsLabel = new QLabel(tr("0 - 0 of 0 Hits"), this);
d->hitsLabel->setEnabled(false);
hBoxLayout->addWidget(d->hitsLabel);
d->hitsLabel->setAlignment(Qt::AlignCenter);
d->hitsLabel->setMinimumSize(QSize(150, d->hitsLabel->height()));
hBoxLayout->addWidget(d->nextResultPage = d->setupToolButton(
QString::fromUtf8(":/qt-project.org/assistant/images/1rightarrow.png")));
hBoxLayout->addWidget(d->lastResultPage = d->setupToolButton(
QString::fromUtf8(":/qt-project.org/assistant/images/3rightarrow.png")));
QSpacerItem *spacer = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
hBoxLayout->addItem(spacer);
vLayout->addLayout(hBoxLayout);
d->resultTextBrowser = new QResultWidget(this);
vLayout->addWidget(d->resultTextBrowser);
connect(d->resultTextBrowser, &QResultWidget::requestShowLink,
this, &QHelpSearchResultWidget::requestShowLink);
connect(d->nextResultPage, &QAbstractButton::clicked,
d, &QHelpSearchResultWidgetPrivate::showNextResultPage);
connect(d->lastResultPage, &QAbstractButton::clicked,
d, &QHelpSearchResultWidgetPrivate::showLastResultPage);
connect(d->firstResultPage, &QAbstractButton::clicked,
d, &QHelpSearchResultWidgetPrivate::showFirstResultPage);
connect(d->previousResultPage, &QAbstractButton::clicked,
d, &QHelpSearchResultWidgetPrivate::showPreviousResultPage);
connect(d->firstResultPage, &QAbstractButton::clicked,
d, &QHelpSearchResultWidgetPrivate::updateNextButtonState);
connect(d->previousResultPage, &QAbstractButton::clicked,
d, &QHelpSearchResultWidgetPrivate::updateNextButtonState);
connect(d->nextResultPage, &QAbstractButton::clicked,
d, &QHelpSearchResultWidgetPrivate::updatePrevButtonState);
connect(d->lastResultPage, &QAbstractButton::clicked,
d, &QHelpSearchResultWidgetPrivate::updatePrevButtonState);
connect(engine, &QHelpSearchEngine::searchingFinished,
d, &QHelpSearchResultWidgetPrivate::setResults);
}
/*! \reimp
*/
void QHelpSearchResultWidget::changeEvent(QEvent *event)
{
if (event->type() == QEvent::LanguageChange)
d->setResults(d->searchEngine->searchResultCount());
}
/*!
Destroys the search result widget.
*/
QHelpSearchResultWidget::~QHelpSearchResultWidget()
{
delete d;
}
/*!
Returns a reference of the URL that the item at \a point owns, or an
empty URL if no item exists at that point.
*/
QUrl QHelpSearchResultWidget::linkAt(const QPoint &point)
{
if (d->resultTextBrowser)
return d->resultTextBrowser->anchorAt(point);
return QUrl();
}
QT_END_NAMESPACE
|
