Add filter to preferences extensions page

Developed by: Yehor Tsyba @malibushko

BUG: 408312

src/lib/preferences/pluginslist.ui

@@ -11,6 +11,13 @@
    </rect>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLineEdit" name="search">
+     <property name="placeholderText">
+      <string>Enter name</string>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="QListWidget" name="list">
      <property name="alternatingRowColors">

src/lib/preferences/pluginsmanager.cpp

@@ -52,6 +52,7 @@ PluginsManager::PluginsManager(QWidget* parent)
     connect(ui->butRemove, &QAbstractButton::clicked, this, &PluginsManager::removeClicked);
     connect(ui->list, &QListWidget::currentItemChanged, this, &PluginsManager::currentChanged);
     connect(ui->list, &QListWidget::itemChanged, this, &PluginsManager::itemChanged);
+    connect(ui->search, &QLineEdit::textChanged, this, &PluginsManager::addFilter);
     connect(mApp->plugins(), &Plugins::availablePluginsChanged, this, &PluginsManager::refresh);
 
     ui->list->setItemDelegate(new PluginListDelegate(ui->list));
@@ -243,6 +244,19 @@ void PluginsManager::removeClicked()
     mApp->plugins()->removePlugin(&plugin);
 }
 
+void PluginsManager::addFilter(const QString& filter) {
+    for (int i = 0; i < ui->list->count(); ++i) {
+        const QString& pluginName = ui->list->item(i)->text();
+
+        if (pluginName.contains(filter,Qt::CaseInsensitive) || !filter.size()) {
+            ui->list->item(i)->setHidden(false);
+        }
+        else {
+            ui->list->item(i)->setHidden(true);
+        }
+    }
+}
+
 PluginsManager::~PluginsManager()
 {
     delete ui;

src/lib/preferences/pluginsmanager.h

@@ -45,6 +45,7 @@ private Q_SLOTS:
     void removeClicked();
     void currentChanged(QListWidgetItem* item);
     void itemChanged(QListWidgetItem* item);
+    void addFilter(const QString& newText);
 
     void refresh();
 

src/lib/tools/scripts.cpp

@@ -232,7 +232,7 @@ QString Scripts::completeFormData(const QByteArray &data)
                           "        var type = input.type.toLowerCase();"
                           "        if (type != 'text' && type != 'password' && type != 'email')"
                           "            continue;"
-                          "        if (input.name == key) {"
+                          "        if (input.name == key && input.name != "") {"
                           "            input.value = val;"
                           "            input.dispatchEvent(new Event('change'));"
                           "        }"