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/* This file is part of Step.
Copyright (C) 2007 Vladimir Kuznetsov <ks.vladimir@gmail.com>
Step 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.
Step 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 Step; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "infobrowser.h"
#include "infobrowser.moc"
#include "worldmodel.h"
#include "settings.h"
#include <QItemSelectionModel>
#include <QVBoxLayout>
#include <QAction>
#include <QFile>
#include <QCoreApplication>
#include <KToolBar>
#include <KHTMLPart>
#include <KStandardDirs>
#include <KLocale>
#include <KToolInvocation>
#include <KIO/Job>
InfoBrowser::InfoBrowser(WorldModel* worldModel, QWidget* parent, Qt::WindowFlags flags)
: QDockWidget(i18n("Context info"), parent, flags),
_worldModel(worldModel), _wikiJob(NULL), _wikiFromHistory(false), _selectionChanged(false)
{
QWidget* widget = new QWidget(this);
setWidget(widget);
QVBoxLayout* layout = new QVBoxLayout(widget);
layout->setContentsMargins(0,0,0,0);
layout->setSpacing(0);
_toolBar = new KToolBar(widget);
layout->addWidget(_toolBar);
_toolBar->setMovable(false);
_toolBar->setFloatable(false);
_toolBar->setIconDimensions(16);
_toolBar->setContextMenuPolicy(Qt::NoContextMenu);
_toolBar->setToolButtonStyle(Qt::ToolButtonIconOnly);
_backAction = _toolBar->addAction(KIcon("go-previous"), i18n("Back"), this, SLOT(back()));
_backAction->setEnabled(false);
_forwardAction = _toolBar->addAction(KIcon("go-next"), i18n("Forward"), this, SLOT(forward()));
_forwardAction->setEnabled(false);
_toolBar->addSeparator();
_syncAction = _toolBar->addAction(KIcon("goto-page"), i18n("Sync selection"), this, SLOT(syncSelection())); // XXX: icon
_syncAction->setEnabled(false);
_followAction = _toolBar->addAction(KIcon("note2"), i18n("Follow selection")/*, this, SLOT(syncSelection(bool))*/); // XXX: icon
_followAction->setCheckable(true);
_followAction->setChecked(true);
_toolBar->addSeparator();
_execAction = _toolBar->addAction(KIcon("system-run"), i18n("Open in browser"), this, SLOT(openInBrowser()));
_execAction->setEnabled(false);
_htmlPart = new KHTMLPart(widget);
layout->addWidget(_htmlPart->widget());
_htmlPart->setJavaEnabled(false);
_htmlPart->setPluginsEnabled(false);
_htmlPart->setJScriptEnabled(true);
_htmlPart->setMetaRefreshEnabled(true);
_htmlPart->setDNDEnabled(false);
connect(_htmlPart->browserExtension(),
SIGNAL(openUrlRequest(const KUrl&, const KParts::OpenUrlArguments&, const KParts::BrowserArguments&)),
this, SLOT(openUrl(const KUrl&)));
connect(_worldModel->selectionModel(), SIGNAL(currentChanged(const QModelIndex&, const QModelIndex&)),
this, SLOT(worldCurrentChanged(const QModelIndex&, const QModelIndex&)));
syncSelection();
}
void InfoBrowser::showEvent(QShowEvent* event)
{
QDockWidget::showEvent(event);
if(_selectionChanged) {
_selectionChanged = false;
QModelIndex current = _worldModel->selectionModel()->currentIndex();
worldCurrentChanged(current, QModelIndex());
}
}
void InfoBrowser::worldCurrentChanged(const QModelIndex& /*current*/, const QModelIndex& /*previous*/)
{
if(isVisible()) {
if(_followAction->isChecked()) syncSelection();
else updateSyncSelection();
} else {
_selectionChanged = true;
}
}
void InfoBrowser::syncSelection(bool checked)
{
if(checked) {
QModelIndex current = _worldModel->selectionModel()->currentIndex();
openUrl(QString("objinfo:").append(current.data(WorldModel::ClassNameRole).toString()), true);
}
}
void InfoBrowser::updateSyncSelection()
{
if(_htmlPart->url().protocol() == "objinfo") {
QModelIndex current = _worldModel->selectionModel()->currentIndex();
if(_htmlPart->url().path() == current.data(WorldModel::ClassNameRole).toString()) {
_syncAction->setEnabled(false);
return;
}
}
_syncAction->setEnabled(true);
}
void InfoBrowser::openUrl(const KUrl& url, bool clearHistory, bool fromHistory)
{
// Cancel the old job
if(_wikiJob) _wikiJob->kill();
_wikiJob = NULL;
if(clearHistory) {
_forwardHistory.clear();
_forwardAction->setEnabled(false);
_backHistory.clear();
_backAction->setEnabled(false);
fromHistory = true;
}
if(url.protocol() == "objinfo") {
QString className = url.path();
if(className.isEmpty()) {
setHtml("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />"
"</head><body>\n"
"<div id='doc_box' class='box'>\n"
"<div id='doc_box-header' class='box-header'>\n"
"<span id='doc_box-header-title' class='box-header-title'>\n"
+ i18n( "Documentation" ) +
"</span>\n"
"</div>\n"
"<div id='doc_box-body' class='box-body'>\n"
"<div class='info'><p>\n"
+ i18n("No current object.") +
"</p></div>\n"
"</div>\n"
"</div>\n"
"</body></html>", fromHistory, url );
return;
}
QString fileName = KStandardDirs::locate("appdata", QString("objinfo/%1.html").arg(className));
if(!fileName.isEmpty()) {
QFile file(fileName);
if(file.open(QIODevice::ReadOnly | QIODevice::Text)) {
setHtml(QString::fromUtf8(file.readAll()), fromHistory, url /*KUrl(fileName)*/);
return;
}
}
setHtml("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />"
"</head><body>\n"
"<div id='doc_box' class='box'>\n"
"<div id='doc_box-header' class='box-header'>\n"
"<span id='doc_box-header-title' class='box-header-title'>\n"
+ i18n( "Documentation error" ) +
"</span>\n"
"</div>\n"
"<div id='doc_box-body' class='box-body'>\n"
"<div class='error'><p>\n"
+ i18n("Documentation for %1 not available. ", QCoreApplication::translate("ObjectClass", className.toUtf8().constData(), NULL, QCoreApplication::UnicodeUTF8))
+ i18n("You can help <a href=\"http://edu.kde.org/step\">Step</a> by writing it!") +
"</p></div>\n"
"</div>\n"
"</div>\n"
"</body></html>", fromHistory, url );
return;
} else if(url.protocol() == "http") {
if(!Settings::wikiExternal() &&
QRegExp("[a-zA-Z-]+\\.wikipedia\\.org").exactMatch(url.host())) {
setHtml(
"<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />"
"</head><body>\n"
"<div id='wiki_box' class='box'>\n"
"<div id='wiki_box-header' class='box-header'>\n"
"<span id='wiki_box-header-title' class='box-header-title'>\n"
+ i18n( "Wikipedia" ) +
"</span>\n"
"</div>\n"
"<div id='wiki_box-body' class='box-body'>\n"
"<div class='info'><p>\n" + i18n( "Fetching Wikipedia Information..." ) + "</p></div>\n"
"</div>\n"
"</div>\n"
"</body></html>\n", fromHistory);
_wikiUrl = url;
_wikiFromHistory = fromHistory;
_wikiJob = KIO::storedGet(url, KIO::NoReload, KIO::HideProgressInfo);
connect(_wikiJob, SIGNAL(result(KJob*)), this, SLOT( wikiResult(KJob*)));
} else {
KToolInvocation::invokeBrowser(url.url());
}
}
show();
}
void InfoBrowser::setHtml(const QString& data, bool fromHistory, const KUrl& url)
{
if(!fromHistory) {
_forwardAction->setEnabled(false);
_forwardHistory.clear();
QString oldUrl = _htmlPart->url().url();
if(!oldUrl.isEmpty()) {
_backHistory << oldUrl;
_backAction->setEnabled(true);
}
}
if(url.protocol() == "http") _execAction->setEnabled(true);
else _execAction->setEnabled(false);
_htmlPart->begin(url);
_htmlPart->write( data );
_htmlPart->end();
updateSyncSelection();
}
void InfoBrowser::back()
{
Q_ASSERT(!_backHistory.isEmpty());
QString url(_backHistory.takeLast());
if(_backHistory.isEmpty())
_backAction->setEnabled(false);
QString curUrl = _htmlPart->url().url();
if(!curUrl.isEmpty()) {
_forwardHistory << curUrl;
_forwardAction->setEnabled(true);
}
openUrl(url, false, true);
}
void InfoBrowser::forward()
{
Q_ASSERT(!_forwardHistory.isEmpty());
QString url(_forwardHistory.takeLast());
if(_forwardHistory.isEmpty())
_forwardAction->setEnabled(false);
QString curUrl = _htmlPart->url().url();
if(!curUrl.isEmpty()) {
_backHistory << curUrl;
_backAction->setEnabled(true);
}
openUrl(url, false, true);
}
void InfoBrowser::openInBrowser()
{
if(_htmlPart->url().protocol() == "http") {
KToolInvocation::invokeBrowser(_htmlPart->url().url());
}
}
void InfoBrowser::wikiResult(KJob* job)
{
// inspired by amarok
if(job != _wikiJob) return;
if(job->error() != 0)
{
setHtml("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />"
"</head><body>\n"
"<div id='wiki_box' class='box'>\n"
"<div id='wiki_box-header' class='box-header'>\n"
"<span id='wiki_box-header-title' class='box-header-title'>\n"
+ i18n( "Wikipedia error" ) +
"</span>\n"
"</div>\n"
"<div id='wiki_box-body' class='box-body'>\n<div class='error'><p>\n"
+ i18n( "Information could not be retrieved because the server was not reachable." ) +
"</div></p>\n</div>\n"
"</div>\n"
"</body></html>\n", _wikiFromHistory);
return;
}
KIO::StoredTransferJob* const storedJob = static_cast<KIO::StoredTransferJob*>( job );
QByteArray rawData = storedJob->data();
QString data;
// TODO: better regexp
if(rawData.contains("charset=utf-8")) data = QString::fromUtf8(rawData.data());
else data = QString(rawData);
//if(data.find( "var wgArticleId = 0" ) != -1) // - article not found
// remove the new-lines and tabs
data.replace( '\n', ' ' );
data.replace( '\t', ' ' );
QString wikiLanguages;
// Get the available language list
if ( data.indexOf("<div id=\"p-lang\" class=\"portlet\">") != -1 )
{
wikiLanguages = data.mid( data.indexOf("<div id=\"p-lang\" class=\"portlet\">") );
wikiLanguages = wikiLanguages.mid( wikiLanguages.indexOf("<ul>") );
wikiLanguages = wikiLanguages.mid( 0, wikiLanguages.indexOf( "</div>" ) );
}
QString copyright;
QString copyrightMark = "<li id=\"f-copyright\">";
if ( data.indexOf( copyrightMark ) != -1 )
{
copyright = data.mid( data.indexOf(copyrightMark) + copyrightMark.length() );
copyright = copyright.mid( 0, copyright.indexOf( "</li>" ) );
copyright.remove( "<br />" );
//only one br at the beginning
copyright.prepend( "<br />" );
}
// Ok lets remove the top and bottom parts of the page
data = data.mid( data.indexOf( "<h1 class=\"firstHeading\">" ) );
data = data.mid( 0, data.indexOf( "<div class=\"printfooter\">" ) );
// Adding back license information
data += copyright;
data.append( "</div>" );
// Remove unnessesary sections (do it with style?)
data.remove( QRegExp("<h3 *id=\"siteSub\">[^<]*</h3>") );
data.remove( QRegExp( "<span class=\"editsection\"[^>]*>[^<]*<[^>]*>[^<]*<[^>]*>[^<]*</span>" ) );
data.replace( QRegExp( "<a href=\"[^\"]*\" class=\"new\"[^>]*>([^<]*)</a>" ), "\\1" );
// Remove anything inside of a class called urlexpansion, as it's pointless for us
data.remove( QRegExp( "<span class= *'urlexpansion'>[^(]*[(][^)]*[)]</span>ttp inthttp" ) );
// Remove hidden table rows as well
QRegExp hidden( "<tr *class= *[\"\']hiddenStructure[\"\']>.*</tr>", Qt::CaseInsensitive );
hidden.setMinimal( true ); //greedy behaviour wouldn't be any good!
data.remove( hidden );
// Remove jump-to-nav
QRegExp jumpToNav( "<div *id= *[\"\']jump-to-nav[\"\']>.*</div>", Qt::CaseInsensitive );
jumpToNav.setMinimal( true );
data.remove( jumpToNav );
// we want to keep our own style (we need to modify the stylesheet a bit to handle things nicely)
//data.remove( QRegExp( "style= *\"[^\"]*\"" ) );
//data.remove( QRegExp( "class= *\"[^\"]*\"" ) );
// let's remove the form elements, we don't want them.
data.remove( QRegExp( "<input[^>]*>" ) );
data.remove( QRegExp( "<select[^>]*>" ) );
data.remove( "</select>\n" );
data.remove( QRegExp( "<option[^>]*>" ) );
data.remove( "</option>\n" );
data.remove( QRegExp( "<textarea[^>]*>" ) );
data.remove( "</textarea>" );
//first we convert all the links with protocol to external, as they should all be External Links.
//data.replace( QRegExp( "href= *\"http:" ), "href=\"externalurl:" );
//QString url = _wikiUrl.url();
//QString baseUrl = url.mid(0, url.indexOf("wiki/"));
//data.replace( QRegExp( "href= *\"/" ), "href=\"" + baseUrl );
//data.replace( QRegExp( "href= *\"#" ), "href=\"" + baseUrl + '#' );
data.prepend("<html><body>\n"
"<div id='wiki_box' class='box'>\n"
"<div id='wiki_box-header' class='box-header'>\n"
"<span id='wiki_box-header-title' class='box-header-title'>\n"
+ i18n( "Wikipedia Information" ) +
"</span>\n"
"</div>\n"
"<div id='wiki_box-body' class='box-body'>\n");
data.append( "</div>\n"
"</div>\n");
if (!wikiLanguages.isEmpty()) {
data.append(
"<br />"
"<div id='wiki_box' class='box'>\n"
"<div id='wiki_box-header' class='box-header'>\n"
"<span id='wiki_box-header-title' class='box-header-title'>\n"
+ i18n( "Wikipedia Other Languages" ) +
"</span>\n"
"</div>\n"
"<div id='wiki_box-body' class='box-body'>\n"
+ wikiLanguages +
"</div>\n"
"</div>\n"
);
}
data.append( "</body></html>\n" );
setHtml( data, _wikiFromHistory, _wikiUrl );
_wikiJob = NULL;
}
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