[FEATURE] add search bar to the Configure Shortcuts dialog (fix #12681)

Supports search by action name and by shortcut

src/gui/qgsconfigureshortcutsdialog.cpp

@@ -28,6 +28,7 @@
 #include <QFileDialog>
 #include <QTextStream>
 #include <QSettings>
+#include <QDebug>
 
 QgsConfigureShortcutsDialog::QgsConfigureShortcutsDialog( QWidget* parent, QgsShortcutsManager* manager )
     : QDialog( parent )
@@ -480,3 +481,19 @@ void QgsConfigureShortcutsDialog::setCurrentActionShortcut( const QKeySequence&
 
   actionChanged( treeActions->currentItem(), nullptr );
 }
+
+void QgsConfigureShortcutsDialog::on_mLeFilter_textChanged( const QString& text )
+{
+  for ( int i = 0; i < treeActions->topLevelItemCount(); i++ )
+  {
+    QTreeWidgetItem* item = treeActions->topLevelItem( i );
+    if ( !item->text( 0 ).contains( text, Qt::CaseInsensitive ) && !item->text( 1 ).contains( text, Qt::CaseInsensitive ) )
+    {
+      item->setHidden( true );
+    }
+    else
+    {
+      item->setHidden( false );
+    }
+  }
+}

src/gui/qgsconfigureshortcutsdialog.h

@@ -54,6 +54,7 @@ class GUI_EXPORT QgsConfigureShortcutsDialog : public QDialog, private Ui::QgsCo
     void setNoShortcut();
     void saveShortcuts();
     void loadShortcuts();
+    void on_mLeFilter_textChanged( const QString& text );
 
     void actionChanged( QTreeWidgetItem* current, QTreeWidgetItem* previous );
 

src/ui/qgsconfigureshortcutsdialog.ui

@@ -14,6 +14,13 @@
    <string>Keyboard shortcuts</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QgsFilterLineEdit" name="mLeFilter">
+     <property name="placeholderText">
+      <string>Search...</string>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="QTreeWidget" name="treeActions">
      <property name="rootIsDecorated">
@@ -110,6 +117,13 @@
    </item>
   </layout>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>QgsFilterLineEdit</class>
+   <extends>QLineEdit</extends>
+   <header>qgsfilterlineedit.h</header>
+  </customwidget>
+ </customwidgets>
  <tabstops>
   <tabstop>treeActions</tabstop>
   <tabstop>btnSetNoShortcut</tabstop>