Implement online help filter.

The search for remote content, like stl::vector in cpp-reference,
google, bing, wikipedia etc...

Task-number: QTCREATORBUG-1375
Reviewed-by: ck

src/plugins/help/help.pro

@@ -26,6 +26,7 @@ HEADERS += \
     openpagesmodel.h \
     openpagesswitcher.h \
     openpageswidget.h \
+    remotehelpfilter.h \
     searchwidget.h \
     xbelsupport.h
 
@@ -46,12 +47,14 @@ SOURCES += \
     openpagesmodel.cpp \
     openpagesswitcher.cpp \
     openpageswidget.cpp \
+    remotehelpfilter.cpp \
     searchwidget.cpp \
     xbelsupport.cpp
 
 FORMS += docsettingspage.ui \
     filtersettingspage.ui \
-    generalsettingspage.ui
+    generalsettingspage.ui \
+    remotehelpfilter.ui
 
 RESOURCES += help.qrc
 include(../../shared/help/help.pri)

src/plugins/help/helpplugin.cpp

@@ -44,6 +44,7 @@
 #include "indexwindow.h"
 #include "openpagesmanager.h"
 #include "openpagesmodel.h"
+#include "remotehelpfilter.h"
 #include "searchwidget.h"
 
 #include <coreplugin/actionmanager/actionmanager.h>
@@ -300,6 +301,11 @@ bool HelpPlugin::initialize(const QStringList &arguments, QString *error)
     connect(helpIndexFilter, SIGNAL(linkActivated(QUrl)), this,
         SLOT(switchToHelpMode(QUrl)));
 
+    RemoteHelpFilter *remoteHelpFilter = new RemoteHelpFilter();
+    addAutoReleasedObject(remoteHelpFilter);
+    connect(remoteHelpFilter, SIGNAL(linkActivated(QUrl)), this,
+        SLOT(switchToHelpMode(QUrl)));
+
     QDesktopServices::setUrlHandler("qthelp", this, "handleHelpRequest");
     connect(m_core->modeManager(), SIGNAL(currentModeChanged(Core::IMode*)),
         this, SLOT(modeChanged(Core::IMode*)));

src/plugins/help/remotehelpfilter.cpp

+/**************************************************************************
+**
+** 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 "remotehelpfilter.h"
+
+#include <QtCore/QUrl>
+
+namespace Help {
+    namespace Internal {
+
+RemoteFilterOptions::RemoteFilterOptions(RemoteHelpFilter *filter, QWidget *parent)
+    : QDialog(parent)
+    , m_filter(filter)
+{
+    m_ui.setupUi(this);
+    m_ui.shortcutEdit->setText(m_filter->shortcutString());
+    m_ui.limitCheck->setChecked(!m_filter->isIncludedByDefault());
+    foreach (const QString &url, m_filter->remoteUrls()) {
+        QListWidgetItem *item = new QListWidgetItem(url);
+        m_ui.listWidget->addItem(item);
+        item->setFlags(item->flags() | Qt::ItemIsEditable);
+    }
+
+    connect(m_ui.add, SIGNAL(clicked()), this, SLOT(addNewItem()));
+    connect(m_ui.remove, SIGNAL(clicked()), this, SLOT(removeItem()));
+}
+
+void RemoteFilterOptions::addNewItem()
+{
+    QListWidgetItem *item = new QListWidgetItem(tr("Double click to edit item."));
+    m_ui.listWidget->addItem(item);
+    item->setSelected(true);
+    item->setFlags(item->flags() | Qt::ItemIsEditable);
+    m_ui.listWidget->editItem(item);
+}
+
+void RemoteFilterOptions::removeItem()
+{
+    if (QListWidgetItem *item = m_ui.listWidget->currentItem()) {
+        m_ui.listWidget->removeItemWidget(item);
+        delete item;
+    }
+}
+
+// -- RemoteHelpFilter
+
+RemoteHelpFilter::RemoteHelpFilter()
+{
+    setIncludedByDefault(false);
+    setShortcutString(QLatin1String("r"));
+    m_remoteUrls.append(QLatin1String("http://www.bing.com/search?q=%1"));
+    m_remoteUrls.append(QLatin1String("http://www.google.com/search?q=%1"));
+    m_remoteUrls.append(QLatin1String("http://search.yahoo.com/search?p=%1"));
+    m_remoteUrls.append(QLatin1String("http://www.cplusplus.com/reference/stl/%1"));
+    m_remoteUrls.append(QLatin1String("http://en.wikipedia.org/w/index.php?search=%1"));
+}
+
+RemoteHelpFilter::~RemoteHelpFilter()
+{
+}
+
+QString RemoteHelpFilter::displayName() const
+{
+    return tr("Online documentation");
+}
+
+QString RemoteHelpFilter::id() const
+{
+    return QLatin1String("RemoteHelpFilter");
+}
+
+Locator::ILocatorFilter::Priority RemoteHelpFilter::priority() const
+{
+    return Medium;
+}
+
+QList<Locator::FilterEntry> RemoteHelpFilter::matchesFor(const QString &pattern)
+{
+    QList<Locator::FilterEntry> entries;
+    foreach (const QString &url, m_remoteUrls) {
+        entries.append(Locator::FilterEntry(this, url.arg(pattern), QVariant(),
+            m_icon));
+    }
+    return entries;
+}
+
+void RemoteHelpFilter::accept(Locator::FilterEntry selection) const
+{
+    const QString &url = selection.displayName;
+    if (!url.isEmpty()) {
+        emit linkActivated(url);
+    }
+}
+
+void RemoteHelpFilter::refresh(QFutureInterface<void> &future)
+{
+    Q_UNUSED(future)
+    // Nothing to refresh
+}
+
+QByteArray RemoteHelpFilter::saveState() const
+{
+    QByteArray value;
+    QDataStream out(&value, QIODevice::WriteOnly);
+    out << m_remoteUrls.join(QLatin1String("^"));
+    out << shortcutString();
+    out << isIncludedByDefault();
+    return value;
+}
+
+bool RemoteHelpFilter::restoreState(const QByteArray &state)
+{
+    QDataStream in(state);
+
+    QString value;
+    in >> value;
+    m_remoteUrls = value.split(QLatin1String("^"), QString::SkipEmptyParts);
+
+    QString shortcut;
+    in >> shortcut;
+    setShortcutString(shortcut);
+
+    bool defaultFilter;
+    in >> defaultFilter;
+    setIncludedByDefault(defaultFilter);
+
+    return true;
+}
+
+bool RemoteHelpFilter::openConfigDialog(QWidget *parent, bool &needsRefresh)
+{
+    Q_UNUSED(needsRefresh)
+    RemoteFilterOptions optionsDialog(this, parent);
+    if (optionsDialog.exec() == QDialog::Accepted) {
+        m_remoteUrls.clear();
+        setIncludedByDefault(!optionsDialog.m_ui.limitCheck->isChecked());
+        setShortcutString(optionsDialog.m_ui.shortcutEdit->text().trimmed());
+        for (int i = 0; i < optionsDialog.m_ui.listWidget->count(); ++i)
+            m_remoteUrls.append(optionsDialog.m_ui.listWidget->item(i)->text());
+        return true;
+    }
+    return true;
+}
+
+    } // namespace Internal
+} // namespace Help

src/plugins/help/remotehelpfilter.h

+/**************************************************************************
+**
+** 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 REMOTEHELPFILTER_H
+#define REMOTEHELPFILTER_H
+
+#include "ui_remotehelpfilter.h"
+
+#include <locator/ilocatorfilter.h>
+
+#include <QtGui/QIcon>
+
+namespace Help {
+    namespace Internal {
+
+class RemoteHelpFilter : public Locator::ILocatorFilter
+{
+    Q_OBJECT
+public:
+    RemoteHelpFilter();
+    ~RemoteHelpFilter();
+
+    // ILocatorFilter
+    QString displayName() const;
+    QString id() const;
+    Priority priority() const;
+    QList<Locator::FilterEntry> matchesFor(const QString &entry);
+    void accept(Locator::FilterEntry selection) const;
+    void refresh(QFutureInterface<void> &future);
+    QByteArray saveState() const;
+    bool restoreState(const QByteArray &state);
+    bool openConfigDialog(QWidget *parent, bool &needsRefresh);
+
+    QStringList remoteUrls() const { return m_remoteUrls; }
+
+signals:
+    void linkActivated(const QUrl &url) const;
+
+private:
+    QIcon m_icon;
+    QStringList m_remoteUrls;
+};
+
+class RemoteFilterOptions : public QDialog
+{
+    Q_OBJECT
+    friend class RemoteHelpFilter;
+
+public:
+    RemoteFilterOptions(RemoteHelpFilter *filter, QWidget *parent = 0);
+
+private slots:
+    void addNewItem();
+    void removeItem();
+
+private:
+    RemoteHelpFilter *m_filter;
+    Ui::RemoteFilterOptions m_ui;
+};
+
+    } // namespace Internal
+} // namespace Help
+
+#endif // REMOTEHELPFILTER_H

src/plugins/help/remotehelpfilter.ui

+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Help::Internal::RemoteFilterOptions</class>
+ <widget class="QDialog" name="Help::Internal::RemoteFilterOptions">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>340</width>
+    <height>179</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Filter configuration</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QLabel" name="label">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>Prefix:</string>
+       </property>
+       <property name="buddy">
+        <cstring>shortcutEdit</cstring>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLineEdit" name="shortcutEdit">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QCheckBox" name="limitCheck">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>Limit to prefix</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_2">
+     <item>
+      <widget class="QListWidget" name="listWidget"/>
+     </item>
+     <item>
+      <layout class="QVBoxLayout" name="verticalLayout">
+       <item>
+        <widget class="QToolButton" name="add">
+         <property name="minimumSize">
+          <size>
+           <width>21</width>
+           <height>21</height>
+          </size>
+         </property>
+         <property name="text">
+          <string>+</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QToolButton" name="remove">
+         <property name="minimumSize">
+          <size>
+           <width>21</width>
+           <height>21</height>
+          </size>
+         </property>
+         <property name="text">
+          <string>-</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>20</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>Help::Internal::RemoteFilterOptions</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>Help::Internal::RemoteFilterOptions</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>