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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "feature.h"
+#include <QTextStream>
+#include <QRegExp>
+#include <QLibraryInfo>
+#include <QFileInfo>
+#include <QApplication>
+#include <QPalette>
+
+QT_BEGIN_NAMESPACE
+
+QMap<QString, Feature*> Feature::instances;
+
+Feature* Feature::getInstance(const QString &key)
+{
+ QString ukey = key.toUpper();
+ if (!instances.contains(ukey))
+ instances[ukey] = new Feature(ukey);
+ return instances[ukey];
+}
+
+Feature::~Feature()
+{
+ delete d;
+}
+
+void Feature::clear()
+{
+ foreach (Feature *f, instances.values())
+ delete f;
+ instances.clear();
+}
+
+static QString listToHtml(const QString &title, const QStringList &list)
+{
+ if (list.isEmpty())
+ return QString();
+
+ QString str;
+ QTextStream stream(&str);
+
+ stream << "<h3>" << title << ":</h3>";
+ stream << "<ul>";
+ foreach (QString l, list)
+ stream << "<li>" << l << "</li>";
+ stream << "</ul>";
+
+ return str;
+}
+
+static QString listToHtml(const QString &title, const QList<Feature*> &list)
+{
+ QStringList stringlist;
+ foreach (Feature *f, list) {
+ QString s("[%3] <a href=\"feature://%1\">%2</a>");
+ s = s.arg(f->key()).arg(f->key());
+ s = s.arg(f->selectable() && f->enabled() ? "On" : "Off");
+ stringlist << s;
+ }
+ return listToHtml(title, stringlist);
+}
+
+static QString linkify(const QString &src)
+{
+ static QRegExp classRegexp("\\b(Q[\\w]+)");
+ QString docRoot = QLibraryInfo::location(QLibraryInfo::DocumentationPath);
+ QString result = src;
+ int pos = 0;
+ while ((pos = classRegexp.indexIn(result, pos)) != -1) {
+ QString className = classRegexp.cap(1);
+ QString file = docRoot + "/html/" + className.toLower() + ".html";
+ QFileInfo info(file);
+ if (info.isFile()) {
+ QString link = QString("<a href=\"file://%1\">%2</a>")
+ .arg(file).arg(className);
+ result.replace(pos, className.length(), link);
+ pos += link.length();
+ } else {
+ pos += className.length();
+ }
+ }
+
+ return result;
+}
+
+QString Feature::toHtml() const
+{
+ QString str;
+ QTextStream stream(&str);
+
+ const QString linkColor = QApplication::palette().color(QPalette::Link).name();
+ stream << "<h2><font size=\"+2\" color=\"" << linkColor << "\">"
+ << key() << "</font></h2>"
+ << "<h2><font size=\"+2\">" << title() << "</font></h2>";
+ if (!description().isEmpty())
+ stream << "<p>" << description() << "</p>";
+ stream << listToHtml("Section", QStringList(section()))
+ << listToHtml("Requires", dependencies())
+ << listToHtml("Required for", supports())
+ << listToHtml("See also", relations());
+
+ return linkify(str);
+}
+
+Feature::Feature(const QString &key) : d(new FeaturePrivate(key)) {}
+
+void Feature::setTitle(const QString &title)
+{
+ d->title = title;
+}
+
+void Feature::setSection(const QString &section)
+{
+ d->section = section;
+}
+
+void Feature::setDescription(const QString &description)
+{
+ d->description = description;
+}
+
+void Feature::addRelation(const QString &key)
+{
+ d->relations.insert(getInstance(key));
+}
+
+void Feature::setRelations(const QStringList &keys)
+{
+ foreach(QString key, keys)
+ if (key != "???")
+ addRelation(key);
+}
+
+QList<Feature*> Feature::relations() const
+{
+ return d->relations.toList();
+}
+
+void Feature::addDependency(const QString &key)
+{
+ Feature *f = getInstance(key);
+ d->dependencies.insert(f);
+ f->d->supports.insert(this);
+}
+
+void Feature::setDependencies(const QStringList &keys)
+{
+ foreach(QString key, keys)
+ addDependency(key);
+}
+
+QList<Feature*> Feature::dependencies() const
+{
+ return d->dependencies.toList();
+}
+
+QList<Feature*> Feature::supports() const
+{
+ return d->supports.toList();
+}
+
+/*
+ Returns a html formatted detailed description of this Feature.
+*/
+QString Feature::getDocumentation() const
+{
+ return QString() + "<h2>" + d->title + "</h2>";
+
+}
+
+void Feature::setEnabled(bool on)
+{
+ if (on == d->enabled)
+ return;
+
+ d->enabled = on;
+ foreach (Feature *f, supports())
+ f->updateSelectable();
+ emit changed();
+}
+
+/*
+ Update whether this feature should be selectable.
+ A feature is selectable if all its dependencies are enabled.
+*/
+void Feature::updateSelectable()
+{
+ bool selectable = true;
+ foreach (Feature *f, dependencies())
+ if (!f->selectable() || !f->enabled())
+ selectable = false;
+ if (selectable != d->selectable) {
+ d->selectable = selectable;
+ foreach (Feature *f, supports())
+ f->updateSelectable();
+ emit changed();
+ }
+}
+
+QT_END_NAMESPACE
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