Generic highlighter: Interface for automatic download of available definitions. Refactorings and changes in related parts of the code.

src/plugins/texteditor/generichighlighter/definitiondownloader.cpp

@@ -0,0 +1,94 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "definitiondownloader.h"
+
+#include <QtCore/QLatin1Char>
+#include <QtCore/QEventLoop>
+#include <QtCore/QFile>
+#include <QtNetwork/QNetworkAccessManager>
+#include <QtNetwork/QNetworkRequest>
+#include <QtNetwork/QNetworkReply>
+
+using namespace TextEditor;
+using namespace Internal;
+
+DefinitionDownloader::DefinitionDownloader(const QUrl &url, const QString &localPath) :
+    m_url(url), m_localPath(localPath)
+{}
+
+void DefinitionDownloader::start()
+{
+    QNetworkReply *reply;
+    QNetworkAccessManager manager;
+
+    int currentAttempt = 0;
+    const int maxAttempts = 5;
+    while (currentAttempt < maxAttempts) {
+        reply = getData(&manager);
+        if (reply->error() != QNetworkReply::NoError)
+            break;
+
+        ++currentAttempt;
+        QVariant variant = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
+        if (variant.isValid() && currentAttempt < maxAttempts) {
+            m_url = variant.toUrl();
+            delete reply;
+        } else if (!variant.isValid()) {
+            saveData(reply);
+            break;
+        }
+    }
+
+    delete reply;
+}
+
+QNetworkReply *DefinitionDownloader::getData(QNetworkAccessManager *manager) const
+{
+    QNetworkRequest request(m_url);
+    QNetworkReply *reply = manager->get(request);
+
+    QEventLoop eventLoop;
+    connect(reply, SIGNAL(finished()), &eventLoop, SLOT(quit()));
+    eventLoop.exec();
+
+    return reply;
+}
+
+void DefinitionDownloader::saveData(QNetworkReply *reply) const
+{
+    const QString &urlPath = m_url.path();
+    const QString &fileName =
+        urlPath.right(urlPath.length() - urlPath.lastIndexOf(QLatin1Char('/')) - 1);
+    QFile file(m_localPath + fileName);
+    if (!file.open(QIODevice::Text | QIODevice::WriteOnly))
+        return;
+    file.write(reply->readAll());
+    file.close();
+}

src/plugins/texteditor/generichighlighter/definitiondownloader.h

@@ -0,0 +1,75 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#ifndef DEFINITIONDOWNLOADER_H
+#define DEFINITIONDOWNLOADER_H
+
+#include <QtCore/QObject>
+#include <QtCore/QString>
+#include <QtCore/QUrl>
+
+QT_BEGIN_NAMESPACE
+class QNetworkReply;
+class QNetworkAccessManager;
+QT_END_NAMESPACE
+
+namespace TextEditor {
+namespace Internal {
+
+class DefinitionDownloader : public QObject
+{
+    Q_OBJECT
+public:
+    DefinitionDownloader(const QUrl &url, const QString &localPath);
+
+    void start();
+
+private:
+    QNetworkReply *getData(QNetworkAccessManager *manager) const;
+    void saveData(QNetworkReply *reply) const;
+
+    QUrl m_url;
+    QString m_localPath;
+};
+
+// Currently QtConcurrent::map does not support passing member functions for sequence of pointers
+// (only works for operator.*) which is the case for the downloaders held by the manager. Then the
+// reason for the following functor. If something is implemented (for example a type traits) to
+// handle operator->* in QtConcurrent::map this functor will not be necessary since it would be
+// possible to directly pass DefinitionDownloader::start.
+struct DownloaderStarter
+{
+    void operator()(DefinitionDownloader *downloader)
+    { downloader->start(); }
+};
+
+} // namespace Internal
+} // namespace TextEditor
+
+#endif // DEFINITIONDOWNLOADER_H

src/plugins/texteditor/generichighlighter/highlightdefinitionhandler.cpp

@@ -437,6 +437,9 @@ void HighlightDefinitionHandler::processIncludeRules(const QSharedPointer<Contex
 
             const QSharedPointer<HighlightDefinition> &externalDefinition =
                 Manager::instance()->definition(id);
+            if (externalDefinition.isNull())
+                continue;
+
             sourceContext = externalDefinition->initialContext();
         } else if (!sourceName.startsWith(kHash)) {
             sourceContext = m_definition->context(sourceName);
@@ -444,6 +447,8 @@ void HighlightDefinitionHandler::processIncludeRules(const QSharedPointer<Contex
             // Recursion is done only for context direct rules. Child rules are not processed
             // because they cannot be include rules.
             processIncludeRules(sourceContext);
+        } else {
+            continue;
         }
 
         if (instruction.replaceItemData()) {

src/plugins/texteditor/generichighlighter/highlightdefinitionmetadata.cpp

@@ -0,0 +1,72 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "highlightdefinitionmetadata.h"
+
+using namespace TextEditor;
+using namespace Internal;
+
+const QLatin1String HighlightDefinitionMetaData::kName("name");
+const QLatin1String HighlightDefinitionMetaData::kExtensions("extensions");
+const QLatin1String HighlightDefinitionMetaData::kMimeType("mimetype");
+const QLatin1String HighlightDefinitionMetaData::kVersion("version");
+const QLatin1String HighlightDefinitionMetaData::kUrl("url");
+
+HighlightDefinitionMetaData::HighlightDefinitionMetaData()
+{}
+
+void HighlightDefinitionMetaData::setName(const QString &name)
+{ m_name = name; }
+
+const QString &HighlightDefinitionMetaData::name() const
+{ return m_name; }
+
+void HighlightDefinitionMetaData::setVersion(const QString &version)
+{ m_version = version; }
+
+const QString &HighlightDefinitionMetaData::version() const
+{ return m_version; }
+
+void HighlightDefinitionMetaData::setPatterns(const QStringList &patterns)
+{ m_patterns = patterns; }
+
+const QStringList &HighlightDefinitionMetaData::patterns() const
+{ return m_patterns; }
+
+void HighlightDefinitionMetaData::setMimeTypes(const QStringList &mimeTypes)
+{ m_mimeTypes = mimeTypes; }
+
+const QStringList &HighlightDefinitionMetaData::mimeTypes() const
+{ return m_mimeTypes; }
+
+void HighlightDefinitionMetaData::setUrl(const QUrl &url)
+{ m_url = url; }
+
+const QUrl &HighlightDefinitionMetaData::url() const
+{ return m_url; }

src/plugins/texteditor/generichighlighter/highlightdefinitionmetadata.h

@@ -0,0 +1,78 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#ifndef HIGHLIGHTDEFINITIONMETADATA_H
+#define HIGHLIGHTDEFINITIONMETADATA_H
+
+#include <QtCore/QString>
+#include <QtCore/QLatin1String>
+#include <QtCore/QStringList>
+#include <QtCore/QUrl>
+
+namespace TextEditor {
+namespace Internal {
+
+class HighlightDefinitionMetaData
+{
+public:
+    HighlightDefinitionMetaData();
+
+    void setName(const QString &name);
+    const QString &name() const;
+
+    void setVersion(const QString &version);
+    const QString &version() const;
+
+    void setPatterns(const QStringList &patterns);
+    const QStringList &patterns() const;
+
+    void setMimeTypes(const QStringList &mimeTypes);
+    const QStringList &mimeTypes() const;
+
+    void setUrl(const QUrl &url);
+    const QUrl &url() const;
+
+    static const QLatin1String kName;
+    static const QLatin1String kExtensions;
+    static const QLatin1String kMimeType;
+    static const QLatin1String kVersion;
+    static const QLatin1String kUrl;
+
+private:
+    QString m_name;
+    QString m_version;
+    QStringList m_patterns;
+    QStringList m_mimeTypes;
+    QUrl m_url;
+};
+
+} // namespace Internal
+} // namespace TextEditor
+
+#endif // HIGHLIGHTDEFINITIONMETADATA_H

src/plugins/texteditor/generichighlighter/highlightersettingspage.cpp

@@ -30,11 +30,14 @@
 #include "highlightersettingspage.h"
 #include "highlightersettings.h"
 #include "manager.h"
+#include "managedefinitionsdialog.h"
 #include "ui_highlightersettingspage.h"
 
 #include <coreplugin/icore.h>
 #include <coreplugin/coreconstants.h>
 
+#include <QtGui/QMessageBox>
+
 using namespace TextEditor;
 using namespace Internal;
 
@@ -102,8 +105,9 @@ QWidget *HighlighterSettingsPage::createPage(QWidget *parent)
     }
 
     connect(m_d->m_page.resetButton, SIGNAL(clicked()), this, SLOT(resetDefinitionsLocation()));
-    connect(m_d->m_page.downloadNoteLabel, SIGNAL(linkActivated(QString)),
-            Manager::instance(), SLOT(openDefinitionsUrl(QString)));
+    connect(m_d->m_page.manageDefinitionsButton, SIGNAL(clicked()),
+            this, SLOT(requestAvailableDefinitionsMetaData()));
+    connect(w, SIGNAL(destroyed()), this, SLOT(ignoreDownloadReply()));
 
     return w;
 }
@@ -152,6 +156,45 @@ void HighlighterSettingsPage::resetDefinitionsLocation()
     m_d->m_page.definitionFilesPath->setPath(findDefinitionsLocation());
 }
 
+void HighlighterSettingsPage::requestAvailableDefinitionsMetaData()
+{
+    m_d->m_page.manageDefinitionsButton->setEnabled(false);
+
+    Manager::instance()->downloadAvailableDefinitionsMetaData();
+    connect(Manager::instance(),
+            SIGNAL(definitionsMetaDataReady(QList<Internal::HighlightDefinitionMetaData>)),
+            this,
+            SLOT(manageDefinitions(QList<Internal::HighlightDefinitionMetaData>)),
+            Qt::UniqueConnection);
+    connect(Manager::instance(), SIGNAL(errorDownloadingDefinitionsMetaData()),
+            this, SLOT(showError()), Qt::UniqueConnection);
+}
+
+void HighlighterSettingsPage::ignoreDownloadReply()
+{
+    disconnect(Manager::instance(),
+               SIGNAL(definitionsMetaDataReady(QList<Internal::HighlightDefinitionMetaData>)),
+               this,
+               SLOT(manageDefinitions(QList<Internal::HighlightDefinitionMetaData>)));
+    disconnect(Manager::instance(), SIGNAL(errorDownloadingDefinitionsMetaData()),
+               this, SLOT(showError()));
+}
+
+void HighlighterSettingsPage::manageDefinitions(const QList<HighlightDefinitionMetaData> &metaData)
+{
+    ManageDefinitionsDialog dialog(metaData, m_d->m_page.manageDefinitionsButton->window());
+    dialog.exec();
+    m_d->m_page.manageDefinitionsButton->setEnabled(true);
+}
+
+void HighlighterSettingsPage::showError()
+{
+    QMessageBox::critical(m_d->m_page.manageDefinitionsButton->window(),
+                          tr("Error connecting to server."),
+                          tr("Not possible to retrieve data."));
+    m_d->m_page.manageDefinitionsButton->setEnabled(true);
+}
+
 bool HighlighterSettingsPage::settingsChanged() const
 {    
     if (m_d->m_settings.definitionFilesPath() != m_d->m_page.definitionFilesPath->path())

src/plugins/texteditor/generichighlighter/highlightersettingspage.h

@@ -32,8 +32,16 @@
 
 #include "texteditoroptionspage.h"
 
+QT_BEGIN_NAMESPACE
+template <class> class QList;
+QT_END_NAMESPACE
+
 namespace TextEditor {
 
+namespace Internal {
+class HighlightDefinitionMetaData;
+}
+
 class HighlighterSettings;
 
 class HighlighterSettingsPage : public TextEditorOptionsPage
@@ -58,6 +66,10 @@ signals:
 
 private slots:
     void resetDefinitionsLocation();
+    void requestAvailableDefinitionsMetaData();
+    void manageDefinitions(const QList<Internal::HighlightDefinitionMetaData> &metaData);
+    void showError();
+    void ignoreDownloadReply();
 
 private:
     void settingsFromUI();

src/plugins/texteditor/generichighlighter/highlightersettingspage.ui

@@ -21,33 +21,20 @@
      </property>
      <layout class="QVBoxLayout" name="verticalLayout">
       <item>
-       <widget class="QLabel" name="downloadNoteLabel">
-        <property name="text">
-         <string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
-&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
-p, li { white-space: pre-wrap; }
-&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'MS Shell Dlg 2'; font-size:8.25pt; font-weight:400; font-style:normal;&quot;&gt;
-&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-size:8pt;&quot;&gt;Definitions can be downloaded from the &lt;/span&gt;&lt;a href=&quot;http://kate-editor.org/downloads/syntax_highlighting&quot;&gt;&lt;span style=&quot; font-size:8pt; text-decoration: underline; color:#0000ff;&quot;&gt;Kate Text Editor&lt;/span&gt;&lt;/a&gt;&lt;span style=&quot; font-size:8pt;&quot;&gt; website and stored at the location below.&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
-        </property>
-        <property name="textFormat">
-         <enum>Qt::RichText</enum>
-        </property>
-        <property name="textInteractionFlags">
-         <set>Qt::TextBrowserInteraction</set>
-        </property>
-       </widget>
-      </item>
-      <item>
-       <layout class="QHBoxLayout" name="horizontalLayout">
+       <layout class="QHBoxLayout" name="horizontalLayout_3">
         <item>
-         <widget class="QLabel" name="locationLabel">
-          <property name="text">
-           <string>Location:</string>
-          </property>
-         </widget>
-        </item>
-        <item>
-         <widget class="Utils::PathChooser" name="definitionFilesPath" native="true"/>
+         <layout class="QHBoxLayout" name="horizontalLayout">
+          <item>
+           <widget class="QLabel" name="locationLabel">
+            <property name="text">
+             <string>Location:</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="Utils::PathChooser" name="definitionFilesPath" native="true"/>
+          </item>
+         </layout>
         </item>
         <item>
          <widget class="QToolButton" name="resetButton">
@@ -65,6 +52,59 @@ p, li { white-space: pre-wrap; }
         </item>
        </layout>
       </item>
+      <item>
+       <widget class="QLabel" name="definitionsInfolabel">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="text">
+         <string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
+&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
+p, li { white-space: pre-wrap; }
+&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'MS Shell Dlg 2'; font-size:8.25pt; font-weight:400; font-style:normal;&quot;&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-size:8pt;&quot;&gt;Highlight definitions are available from the &lt;/span&gt;&lt;a href=&quot;http://kate-editor.org/downloads/syntax_highlighting?kateversion=3.2&quot;&gt;&lt;span style=&quot; font-size:8pt; text-decoration: underline; color:#0000ff;&quot;&gt;Kate Text Editor&lt;/span&gt;&lt;/a&gt;&lt;span style=&quot; font-size:8pt;&quot;&gt; website. Qt Creator can download a list of available definitions and then install the selected ones.&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+        </property>
+        <property name="textFormat">
+         <enum>Qt::RichText</enum>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+        </property>
+        <property name="wordWrap">
+         <bool>true</bool>
+        </property>
+        <property name="openExternalLinks">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <layout class="QHBoxLayout" name="horizontalLayout_4">
+        <item>
+         <widget class="QPushButton" name="manageDefinitionsButton">
+          <property name="text">
+           <string>Manage Definitions</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <spacer name="horizontalSpacer">
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
+          </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>328</width>
+            <height>20</height>
+           </size>
+          </property>
+         </spacer>
+        </item>
+       </layout>
+      </item>
      </layout>
     </widget>
    </item>
@@ -77,7 +117,7 @@ p, li { white-space: pre-wrap; }
       <item>
        <widget class="QCheckBox" name="alertWhenNoDefinition">
         <property name="text">
-         <string>Alert when a highlight definition is not found.</string>
+         <string>Alert when a highlight definition is not found</string>
         </property>
        </widget>
       </item>
@@ -125,6 +165,12 @@ p, li { white-space: pre-wrap; }
    </slots>
   </customwidget>
  </customwidgets>
+ <tabstops>
+  <tabstop>resetButton</tabstop>
+  <tabstop>manageDefinitionsButton</tabstop>
+  <tabstop>alertWhenNoDefinition</tabstop>
+  <tabstop>ignoreEdit</tabstop>
+ </tabstops>
  <resources>
   <include location="../../coreplugin/core.qrc"/>
  </resources>

src/plugins/texteditor/generichighlighter/managedefinitionsdialog.cpp

@@ -0,0 +1,121 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "managedefinitionsdialog.h"
+#include "manager.h"
+
+#include <QtCore>
+#include <QtCore/QUrl>
+#include <QtCore/QIODevice>
+#include <QtCore/QXmlStreamReader>
+#include <QtCore/QXmlStreamAttributes>
+#include <QtCore/QFuture>
+#include <QtCore/QFutureWatcher>
+#include <QtCore/QtConcurrentMap>
+#include <QtGui/QMessageBox>
+
+#include <QDebug>
+
+using namespace TextEditor;
+using namespace Internal;
+
+ManageDefinitionsDialog::ManageDefinitionsDialog(
+    const QList<HighlightDefinitionMetaData> &metaDataList, QWidget *parent) :
+    m_definitionsMetaData(metaDataList), QDialog(parent)
+{
+    ui.setupUi(this);    
+    ui.definitionsTable->setHorizontalHeaderLabels(
+        QStringList() << tr("Definition Name") << tr("Installed") << tr("Available"));
+    ui.definitionsTable->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch);
+
+    setWindowTitle(tr("Manage Definitions"));
+
+    populateDefinitionsWidget();
+
+    connect(ui.downloadButton, SIGNAL(clicked()), this, SLOT(downloadDefinitions()));
+}
+
+void ManageDefinitionsDialog::populateDefinitionsWidget()
+{
+    const int size = m_definitionsMetaData.size();
+    ui.definitionsTable->setRowCount(size);
+    for (int i = 0; i < size; ++i) {
+        const HighlightDefinitionMetaData &downloadData = m_definitionsMetaData.at(i);
+
+        QString installedVersion;
+        const QString &id = Manager::instance()->definitionIdByName(downloadData.name());
+        const QSharedPointer<HighlightDefinitionMetaData> &metaData =
+            Manager::instance()->definitionMetaData(id);
+        if (!metaData.isNull())
+            installedVersion = metaData->version();
+
+        for (int j = 0; j < 3; ++j) {
+            QTableWidgetItem *item = new QTableWidgetItem;
+            if (j == 0)
+                item->setText(downloadData.name());
+            else if (j == 1) {
+                item->setText(installedVersion);
+                item->setTextAlignment(Qt::AlignCenter);
+            } else if (j == 2) {
+                item->setText(downloadData.version());
+                item->setTextAlignment(Qt::AlignCenter);
+            }
+            ui.definitionsTable->setItem(i, j, item);
+        }
+    }
+}
+
+void ManageDefinitionsDialog::downloadDefinitions()
+{
+    if (Manager::instance()->isDownloadingDefinitions()) {
+        QMessageBox::information(
+            this,
+            tr("Download Information"),
+            tr("There is already one download in progress. Please wait until it is finished."));
+        return;
+    }
+
+    QList<QUrl> urls;
+    foreach (const QModelIndex &index, ui.definitionsTable->selectionModel()->selectedRows())
+        urls.append(m_definitionsMetaData.at(index.row()).url());
+    Manager::instance()->downloadDefinitions(urls);
+    close();
+}
+
+void ManageDefinitionsDialog::changeEvent(QEvent *e)
+{
+    QDialog::changeEvent(e);
+    switch (e->type()) {
+    case QEvent::LanguageChange:
+        ui.retranslateUi(this);
+        break;
+    default:
+        break;
+    }
+}

src/plugins/texteditor/generichighlighter/managedefinitionsdialog.h

@@ -0,0 +1,64 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#ifndef MANAGEDEFINITIONSDIALOG_H
+#define MANAGEDEFINITIONSDIALOG_H
+
+#include "ui_managedefinitionsdialog.h"
+#include "highlightdefinitionmetadata.h"
+
+#include <QtCore/QList>
+
+namespace TextEditor {
+namespace Internal {
+
+class ManageDefinitionsDialog : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit ManageDefinitionsDialog(const QList<HighlightDefinitionMetaData> &metaDataList,
+                                     QWidget *parent = 0);
+
+protected:
+    void changeEvent(QEvent *e);
+
+private slots:
+    void downloadDefinitions();
+
+private:
+    void populateDefinitionsWidget();
+
+    QList<HighlightDefinitionMetaData> m_definitionsMetaData;
+    Ui::ManageDefinitionsDialog ui;
+};
+
+} // namespace Internal
+} // namespace TextEditor
+
+#endif // MANAGEDEFINITIONSDIALOG_H

src/plugins/texteditor/generichighlighter/managedefinitionsdialog.ui

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>ManageDefinitionsDialog</class>
+ <widget class="QDialog" name="ManageDefinitionsDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>447</width>
+    <height>315</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <widget class="QGroupBox" name="definitionsGroupBox">
+     <property name="title">
+      <string>Available Definitions</string>
+     </property>
+     <layout class="QVBoxLayout" name="verticalLayout">
+      <item>
+       <widget class="QTableWidget" name="definitionsTable">
+        <property name="alternatingRowColors">
+         <bool>true</bool>
+        </property>
+        <property name="selectionBehavior">
+         <enum>QAbstractItemView::SelectRows</enum>
+        </property>
+        <property name="columnCount">
+         <number>3</number>
+        </property>
+        <attribute name="verticalHeaderVisible">
+         <bool>false</bool>
+        </attribute>
+        <attribute name="verticalHeaderDefaultSectionSize">
+         <number>20</number>
+        </attribute>
+        <column/>
+        <column/>
+        <column/>
+       </widget>
+      </item>
+      <item>
+       <layout class="QHBoxLayout" name="horizontalLayout">
+        <item>
+         <widget class="QPushButton" name="downloadButton">
+          <property name="text">
+           <string>Download Selected Definitions</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <spacer name="horizontalSpacer">
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
+          </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>188</width>
+            <height>20</height>
+           </size>
+          </property>
+         </spacer>
+        </item>
+       </layout>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_2">
+     <item>
+      <spacer name="horizontalSpacer_2">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>298</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="closeButton">
+       <property name="text">
+        <string>Close</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>closeButton</sender>
+   <signal>clicked()</signal>
+   <receiver>ManageDefinitionsDialog</receiver>
+   <slot>close()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>381</x>
+     <y>294</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>306</x>
+     <y>298</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

src/plugins/texteditor/generichighlighter/manager.cpp

@@ -31,14 +31,16 @@
 #include "highlightdefinition.h"
 #include "highlightdefinitionhandler.h"
 #include "highlighterexception.h"
+#include "definitiondownloader.h"
+#include "highlightersettings.h"
+#include "plaintexteditorfactory.h"
+#include "texteditorconstants.h"
 #include "texteditorplugin.h"
 #include "texteditorsettings.h"
-#include "plaintexteditorfactory.h"
-#include "highlightersettings.h"
-#include "texteditorconstants.h"
 
 #include <coreplugin/icore.h>
 #include <utils/qtcassert.h>
+#include <coreplugin/progressmanager/progressmanager.h>
 #include <qtconcurrent/QtConcurrentTools>
 
 #include <QtCore/QtAlgorithms>
@@ -50,22 +52,27 @@
 #include <QtCore/QFile>
 #include <QtCore/QFileInfo>
 #include <QtCore/QDir>
-#include <QtCore/QList>
 #include <QtCore/QRegExp>
 #include <QtCore/QFuture>
 #include <QtCore/QtConcurrentRun>
+#include <QtCore/QtConcurrentMap>
 #include <QtCore/QUrl>
 #include <QtGui/QDesktopServices>
 #include <QtXml/QXmlSimpleReader>
 #include <QtXml/QXmlInputSource>
 #include <QtXml/QXmlStreamReader>
 #include <QtXml/QXmlStreamAttributes>
+#include <QtNetwork/QNetworkRequest>
+#include <QtNetwork/QNetworkReply>
 
 using namespace TextEditor;
 using namespace Internal;
 
-Manager::Manager()
-{}
+Manager::Manager() : m_downloadingDefinitions(false)
+{
+    connect(&m_mimeTypeWatcher, SIGNAL(resultReadyAt(int)), this, SLOT(registerMimeType(int)));
+    connect(&m_downloadWatcher, SIGNAL(finished()), this, SLOT(downloadDefinitionsFinished()));
+}
 
 Manager::~Manager()
 {}
@@ -80,19 +87,7 @@ QString Manager::definitionIdByName(const QString &name) const
 { return m_idByName.value(name); }
 
 QString Manager::definitionIdByMimeType(const QString &mimeType) const
-{
-    if (m_idByMimeType.count(mimeType) > 1) {
-        QStringList candidateIds;
-        QMultiHash<QString, QString>::const_iterator it = m_idByMimeType.find(mimeType);
-        QMultiHash<QString, QString>::const_iterator endIt = m_idByMimeType.end();
-        for (; it != endIt && it.key() == mimeType; ++it)
-            candidateIds.append(it.value());
-
-        qSort(candidateIds.begin(), candidateIds.end(), m_priorityComp);
-        return candidateIds.last();
-    }
-    return m_idByMimeType.value(mimeType);
-}
+{ return m_idByMimeType.value(mimeType); }
 
 QString Manager::definitionIdByAnyMimeType(const QStringList &mimeTypes) const
 {
@@ -105,31 +100,37 @@ QString Manager::definitionIdByAnyMimeType(const QStringList &mimeTypes) const
     return definitionId;
 }
 
-const QSharedPointer<HighlightDefinition> &Manager::definition(const QString &id)
+QSharedPointer<HighlightDefinition> Manager::definition(const QString &id)
 {
-    if (!m_definitions.contains(id)) {
-        m_isBuilding.insert(id);
-
+    if (!id.isEmpty() && !m_definitions.contains(id)) {
         QFile definitionFile(id);
         if (!definitionFile.open(QIODevice::ReadOnly | QIODevice::Text))
-            throw HighlighterException();
-        QXmlInputSource source(&definitionFile);
+            return QSharedPointer<HighlightDefinition>();
 
         QSharedPointer<HighlightDefinition> definition(new HighlightDefinition);
         HighlightDefinitionHandler handler(definition);
 
+        QXmlInputSource source(&definitionFile);
         QXmlSimpleReader reader;
         reader.setContentHandler(&handler);
-        reader.parse(source);
+        m_isBuilding.insert(id);
+        try {
+            reader.parse(source);
+        } catch (HighlighterException &) {
+            definition.clear();
+        }
+        m_isBuilding.remove(id);
+        definitionFile.close();
 
         m_definitions.insert(id, definition);
-        definitionFile.close();
-        m_isBuilding.remove(id);
     }
 
-    return *m_definitions.constFind(id);
+    return m_definitions.value(id);
 }
 
+QSharedPointer<HighlightDefinitionMetaData> Manager::definitionMetaData(const QString &id) const
+{ return m_definitionsMetaData.value(id); }
+
 bool Manager::isBuildingDefinition(const QString &id) const
 { return m_isBuilding.contains(id); }
 
@@ -138,9 +139,7 @@ void Manager::registerMimeTypes()
     clear();
     QFuture<Core::MimeType> future =
             QtConcurrent::run(&Manager::gatherDefinitionsMimeTypes, this);
-    m_watcher.setFuture(future);
-
-    connect(&m_watcher, SIGNAL(resultReadyAt(int)), this, SLOT(registerMimeType(int)));
+    m_mimeTypeWatcher.setFuture(future);
 }
 
 void Manager::gatherDefinitionsMimeTypes(QFutureInterface<Core::MimeType> &future)
@@ -153,10 +152,13 @@ void Manager::gatherDefinitionsMimeTypes(QFutureInterface<Core::MimeType> &futur
 
     const QFileInfoList &filesInfo = definitionsDir.entryInfoList();
     foreach (const QFileInfo &fileInfo, filesInfo) {
-        QString comment;
-        QStringList mimeTypes;
-        QStringList patterns;
-        parseDefinitionMetadata(fileInfo, &comment, &mimeTypes, &patterns);
+        const QSharedPointer<HighlightDefinitionMetaData> &metaData = parseMetadata(fileInfo);
+        if (metaData.isNull())
+            continue;
+
+        const QString &id = fileInfo.absoluteFilePath();
+        m_idByName.insert(metaData->name(), id);
+        m_definitionsMetaData.insert(id, metaData);
 
         // A definition can specify multiple MIME types and file extensions/patterns. However, each
         // thing is done with a single string. Then, there is no direct way to tell which patterns
@@ -165,19 +167,20 @@ void Manager::gatherDefinitionsMimeTypes(QFutureInterface<Core::MimeType> &futur
 
         static const QStringList textPlain(QLatin1String("text/plain"));
 
-        QList<QRegExp> expressions;
-        foreach (const QString &type, mimeTypes) {
+        QList<QRegExp> patterns;
+        foreach (const QString &type, metaData->mimeTypes()) {
+            m_idByMimeType.insert(type, id);
             Core::MimeType mimeType = Core::ICore::instance()->mimeDatabase()->findByType(type);
             if (mimeType.isNull()) {
-                if (expressions.isEmpty()) {
-                    foreach (const QString &pattern, patterns)
-                        expressions.append(QRegExp(pattern, Qt::CaseSensitive, QRegExp::Wildcard));
+                if (patterns.isEmpty()) {
+                    foreach (const QString &pattern, metaData->patterns())
+                        patterns.append(QRegExp(pattern, Qt::CaseSensitive, QRegExp::Wildcard));
                 }
 
                 mimeType.setType(type);
                 mimeType.setSubClassesOf(textPlain);
-                mimeType.setComment(comment);
-                mimeType.setGlobPatterns(expressions);
+                mimeType.setComment(metaData->name());
+                mimeType.setGlobPatterns(patterns);
 
                 future.reportResult(mimeType);
             }
@@ -187,76 +190,129 @@ void Manager::gatherDefinitionsMimeTypes(QFutureInterface<Core::MimeType> &futur
 
 void Manager::registerMimeType(int index) const
 {
-    const Core::MimeType &mimeType = m_watcher.resultAt(index);
-    Core::ICore::instance()->mimeDatabase()->addMimeType(mimeType);
+    const Core::MimeType &mimeType = m_mimeTypeWatcher.resultAt(index);
     TextEditorPlugin::instance()->editorFactory()->addMimeType(mimeType.type());
+    Core::ICore::instance()->mimeDatabase()->addMimeType(mimeType);
 }
 
-void Manager::parseDefinitionMetadata(const QFileInfo &fileInfo,
-                                      QString *comment,
-                                      QStringList *mimeTypes,
-                                      QStringList *patterns)
+QSharedPointer<HighlightDefinitionMetaData> Manager::parseMetadata(const QFileInfo &fileInfo)
 {
     static const QLatin1Char kSemiColon(';');
     static const QLatin1Char kSlash('/');
     static const QLatin1String kLanguage("language");
-    static const QLatin1String kName("name");
-    static const QLatin1String kExtensions("extensions");
-    static const QLatin1String kMimeType("mimetype");
-    static const QLatin1String kPriority("priority");
     static const QLatin1String kArtificial("artificial");
 
-    const QString &id = fileInfo.absoluteFilePath();
-
-    QFile definitionFile(id);
+    QFile definitionFile(fileInfo.absoluteFilePath());
     if (!definitionFile.open(QIODevice::ReadOnly | QIODevice::Text))
-        return;
+        return QSharedPointer<HighlightDefinitionMetaData>();
+
+    QSharedPointer<HighlightDefinitionMetaData> metaData(new HighlightDefinitionMetaData);
 
     QXmlStreamReader reader(&definitionFile);
     while (!reader.atEnd() && !reader.hasError()) {
         if (reader.readNext() == QXmlStreamReader::StartElement &&
             reader.name() == kLanguage) {
-            const QXmlStreamAttributes &attr = reader.attributes();
+            const QXmlStreamAttributes &atts = reader.attributes();
 
-            *comment = attr.value(kName).toString();
-            m_idByName.insert(*comment, id);
+            metaData->setName(atts.value(HighlightDefinitionMetaData::kName).toString());
+            metaData->setVersion(atts.value(HighlightDefinitionMetaData::kVersion).toString());
+            metaData->setPatterns(atts.value(HighlightDefinitionMetaData::kExtensions).
+                                  toString().split(kSemiColon, QString::SkipEmptyParts));
 
-            *patterns = attr.value(kExtensions).toString().split(kSemiColon,
-                                                                 QString::SkipEmptyParts);
-
-            *mimeTypes = attr.value(kMimeType).toString().split(kSemiColon,
-                                                                QString::SkipEmptyParts);
-            if (mimeTypes->isEmpty()) {
+            QStringList mimeTypes = atts.value(HighlightDefinitionMetaData::kMimeType).
+                                    toString().split(kSemiColon, QString::SkipEmptyParts);
+            if (mimeTypes.isEmpty()) {
                 // There are definitions which do not specify a MIME type, but specify file
                 // patterns. Creating an artificial MIME type is a workaround.
                 QString artificialType(kArtificial);
-                artificialType.append(kSlash).append(*comment);
-                m_idByMimeType.insert(artificialType, id);
-                mimeTypes->append(artificialType);
-            } else {
-                foreach (const QString &type, *mimeTypes)
-                    m_idByMimeType.insert(type, id);
+                artificialType.append(kSlash).append(metaData->name());
+                mimeTypes.append(artificialType);
             }
-
-            // The priority below should not be confused with the priority used when matching files
-            // to MIME types. Kate uses this when there are definitions which share equal
-            // extensions/patterns. Here it is for choosing a highlight definition if there are
-            // multiple ones associated with the same MIME type (should not happen in general).
-            m_priorityComp.m_priorityById.insert(id, attr.value(kPriority).toString().toInt());
+            metaData->setMimeTypes(mimeTypes);
 
             break;
         }
     }
     reader.clear();
     definitionFile.close();
+
+    return metaData;
 }
 
-void Manager::clear()
+QList<HighlightDefinitionMetaData> Manager::parseAvailableDefinitionsList(QIODevice *device) const
 {
-    m_priorityComp.m_priorityById.clear();
-    m_idByName.clear();
-    m_idByMimeType.clear();
-    m_definitions.clear();
+    static const QLatin1String kDefinition("Definition");
+
+    QList<HighlightDefinitionMetaData> metaDataList;
+    QXmlStreamReader reader(device);
+    while (!reader.atEnd() && !reader.hasError()) {
+        if (reader.readNext() == QXmlStreamReader::StartElement &&
+            reader.name() == kDefinition) {
+            const QXmlStreamAttributes &atts = reader.attributes();
+
+            HighlightDefinitionMetaData metaData;
+            metaData.setName(atts.value(HighlightDefinitionMetaData::kName).toString());
+            metaData.setUrl(QUrl(atts.value(HighlightDefinitionMetaData::kUrl).toString()));
+            metaData.setVersion(atts.value(HighlightDefinitionMetaData::kVersion).toString());
+
+            metaDataList.append(metaData);
+        }
+    }
+    reader.clear();
+
+    return metaDataList;
+}
+
+void Manager::downloadAvailableDefinitionsMetaData()
+{
+    QUrl url(QLatin1String("http://www.kate-editor.org/syntax/update-3.2.xml"));
+    QNetworkRequest request(url);
+    // Currently this takes a couple of seconds on Windows 7: QTBUG-10106.
+    QNetworkReply *reply = m_networkManager.get(request);
+    connect(reply, SIGNAL(finished()), this, SLOT(downloadAvailableDefinitionsListFinished()));
+}
+
+void Manager::downloadAvailableDefinitionsListFinished()
+{
+    if (QNetworkReply *reply = qobject_cast<QNetworkReply *>(sender())) {
+        if (reply->error() == QNetworkReply::NoError)
+            emit definitionsMetaDataReady(parseAvailableDefinitionsList(reply));
+        else
+            emit errorDownloadingDefinitionsMetaData();
+        reply->deleteLater();
+    }
+}
+
+void Manager::downloadDefinitions(const QList<QUrl> &urls)
+{
+    const QString &savePath =
+        TextEditorSettings::instance()->highlighterSettings().definitionFilesPath() +
+        QLatin1Char('/');
+
+    m_downloaders.clear();
+    foreach (const QUrl &url, urls)
+        m_downloaders.append(new DefinitionDownloader(url, savePath));
+
+    m_downloadingDefinitions = true;
+    QFuture<void> future = QtConcurrent::map(m_downloaders, DownloaderStarter());
+    m_downloadWatcher.setFuture(future);
+    Core::ICore::instance()->progressManager()->addTask(future,
+                                                        tr("Downloading definitions"),
+                                                        Constants::TASK_DOWNLOAD);
+}
+
+void Manager::downloadDefinitionsFinished()
+{
+    foreach (DefinitionDownloader *downloader, m_downloaders)
+        delete downloader;
+
+    registerMimeTypes();
+    m_downloadingDefinitions = false;
+}
+
+bool Manager::isDownloadingDefinitions() const
+{
+    return m_downloadingDefinitions;
 }
 
 void Manager::showGenericHighlighterOptions() const
@@ -265,7 +321,10 @@ void Manager::showGenericHighlighterOptions() const
                                                Constants::TEXT_EDITOR_HIGHLIGHTER_SETTINGS);
 }
 
-void Manager::openDefinitionsUrl(const QString &location) const
+void Manager::clear()
 {
-    QDesktopServices::openUrl(QUrl(location));
+    m_idByName.clear();
+    m_idByMimeType.clear();
+    m_definitions.clear();
+    m_definitionsMetaData.clear();
 }

src/plugins/texteditor/generichighlighter/manager.h

@@ -30,19 +30,23 @@
 #ifndef MANAGER_H
 #define MANAGER_H
 
+#include "highlightdefinitionmetadata.h"
+
 #include <coreplugin/mimedatabase.h>
 
 #include <QtCore/QString>
 #include <QtCore/QHash>
-#include <QtCore/QMultiHash>
 #include <QtCore/QSet>
+#include <QtCore/QUrl>
+#include <QtCore/QList>
 #include <QtCore/QSharedPointer>
 #include <QtCore/QFutureWatcher>
+#include <QtNetwork/QNetworkAccessManager>
 
 QT_BEGIN_NAMESPACE
 class QFileInfo;
 class QStringList;
-class QDir;
+class QIODevice;
 template <class> class QFutureInterface;
 QT_END_NAMESPACE
 
@@ -50,6 +54,7 @@ namespace TextEditor {
 namespace Internal {
 
 class HighlightDefinition;
+class DefinitionDownloader;
 
 class Manager : public QObject
 {
@@ -61,43 +66,50 @@ public:
     QString definitionIdByName(const QString &name) const;
     QString definitionIdByMimeType(const QString &mimeType) const;
     QString definitionIdByAnyMimeType(const QStringList &mimeTypes) const;
+
     bool isBuildingDefinition(const QString &id) const;
-    const QSharedPointer<HighlightDefinition> &definition(const QString &id);
+
+    QSharedPointer<HighlightDefinition> definition(const QString &id);
+    QSharedPointer<HighlightDefinitionMetaData> definitionMetaData(const QString &id) const;
+
+    void downloadAvailableDefinitionsMetaData();
+    void downloadDefinitions(const QList<QUrl> &urls);
+    bool isDownloadingDefinitions() const;
 
 public slots:
     void registerMimeTypes();
     void showGenericHighlighterOptions() const;
-    void openDefinitionsUrl(const QString &location) const;
 
 private slots:
     void registerMimeType(int index) const;
+    void downloadAvailableDefinitionsListFinished();
+    void downloadDefinitionsFinished();
 
 private:
     Manager();
     Q_DISABLE_COPY(Manager)
 
-    void clear();
     void gatherDefinitionsMimeTypes(QFutureInterface<Core::MimeType> &future);
-    void parseDefinitionMetadata(const QFileInfo &fileInfo,
-                                 QString *comment,
-                                 QStringList *mimeTypes,
-                                 QStringList *patterns);
-
-    struct PriorityCompare
-    {
-        bool operator()(const QString &a, const QString &b) const
-        { return m_priorityById.value(a) < m_priorityById.value(b); }
-
-        QHash<QString, int> m_priorityById;
-    };
-    PriorityCompare m_priorityComp;
-
-    QFutureWatcher<Core::MimeType> m_watcher;
+    QSharedPointer<HighlightDefinitionMetaData> parseMetadata(const QFileInfo &fileInfo);
+    QList<HighlightDefinitionMetaData> parseAvailableDefinitionsList(QIODevice *device) const;
+    void clear();
 
     QHash<QString, QString> m_idByName;
-    QMultiHash<QString, QString> m_idByMimeType;
+    QHash<QString, QString> m_idByMimeType;
     QHash<QString, QSharedPointer<HighlightDefinition> > m_definitions;
+    QHash<QString, QSharedPointer<HighlightDefinitionMetaData> > m_definitionsMetaData;
     QSet<QString> m_isBuilding;
+
+    QList<DefinitionDownloader *> m_downloaders;
+    bool m_downloadingDefinitions;
+    QNetworkAccessManager m_networkManager;
+
+    QFutureWatcher<void> m_downloadWatcher;
+    QFutureWatcher<Core::MimeType> m_mimeTypeWatcher;
+
+signals:
+    void definitionsMetaDataReady(const QList<Internal::HighlightDefinitionMetaData>&);
+    void errorDownloadingDefinitionsMetaData();
 };
 
 } // namespace Internal

src/plugins/texteditor/plaintexteditor.cpp

@@ -173,10 +173,9 @@ void PlainTextEditor::configure(const Core::MimeType &mimeType)
         definitionId = findDefinitionId(mimeType, true);
 
     if (!definitionId.isEmpty()) {
-        try {
-            const QSharedPointer<HighlightDefinition> &definition =
-                    Manager::instance()->definition(definitionId);
-
+        const QSharedPointer<HighlightDefinition> &definition =
+            Manager::instance()->definition(definitionId);
+        if (!definition.isNull()) {
             Highlighter *highlighter = new Highlighter(definition->initialContext());
             baseTextDocument()->setSyntaxHighlighter(highlighter);
 
@@ -188,7 +187,6 @@ void PlainTextEditor::configure(const Core::MimeType &mimeType)
             setFontSettings(TextEditorSettings::instance()->fontSettings());
 
             m_isMissingSyntaxDefinition = false;
-        } catch (const HighlighterException &) {
         }
     } else if (file()) {
         const QString &fileName = file()->fileName();

src/plugins/texteditor/texteditor.pro

@@ -1,7 +1,7 @@
 TEMPLATE = lib
 TARGET = TextEditor
 DEFINES += TEXTEDITOR_LIBRARY
-QT += xml
+QT += xml network
 include(../../qtcreatorplugin.pri)
 include(texteditor_dependencies.pri)
 INCLUDEPATH += generichighlighter
@@ -55,7 +55,10 @@ SOURCES += texteditorplugin.cpp \
     generichighlighter/manager.cpp \
     generichighlighter/highlightdefinitionhandler.cpp \
     generichighlighter/highlightersettingspage.cpp \
-    generichighlighter/highlightersettings.cpp
+    generichighlighter/highlightersettings.cpp \
+    generichighlighter/managedefinitionsdialog.cpp \
+    generichighlighter/highlightdefinitionmetadata.cpp \
+    generichighlighter/definitiondownloader.cpp
 
 HEADERS += texteditorplugin.h \
     textfilewizard.h \
@@ -113,13 +116,17 @@ HEADERS += texteditorplugin.h \
     generichighlighter/manager.h \
     generichighlighter/highlightdefinitionhandler.h \
     generichighlighter/highlightersettingspage.h \
-    generichighlighter/highlightersettings.h
+    generichighlighter/highlightersettings.h \
+    generichighlighter/managedefinitionsdialog.h \
+    generichighlighter/highlightdefinitionmetadata.h \
+    generichighlighter/definitiondownloader.h
 
 
 FORMS += behaviorsettingspage.ui \
     displaysettingspage.ui \
     fontsettingspage.ui \
     colorschemeedit.ui \
-    generichighlighter/highlightersettingspage.ui
+    generichighlighter/highlightersettingspage.ui \
+    generichighlighter/managedefinitionsdialog.ui
 RESOURCES += texteditor.qrc
 OTHER_FILES += TextEditor.pluginspec TextEditor.mimetypes.xml

src/plugins/texteditor/texteditorconstants.h

@@ -88,7 +88,7 @@ const char * const GOTO_PREVIOUS_WORD_WITH_SELECTION = "TextEditor.GotoPreviousW
 const char * const GOTO_NEXT_WORD_WITH_SELECTION = "TextEditor.GotoNextWordWithSelection";
 const char * const C_TEXTEDITOR_MIMETYPE_TEXT = "text/plain";
 const char * const INFO_SYNTAX_DEFINITION = "TextEditor.InfoSyntaxDefinition";
-
+const char * const TASK_DOWNLOAD = "TextEditor.Task.Download";
 
 // Text color and style categories
 const char * const C_TEXT                = "Text";