Keys/App/UI/MainWindow.xml

<?xml version="1.0" encoding="UTF-8"?>  
<interface>  
  <object class="AdwWindow" id="main_window">  
    <property name="width-request">350</property>  
    <property name="height-request">300</property>  
    <property name="default-width">800</property>  
    <property name="default-height">500</property>  
    <child>  
      <object class="AdwBreakpoint">  
        <condition>max-width: 500sp</condition>  
        <setter object="split_view" property="collapsed">True</setter>  
        <setter object="show_sidebar_button" property="visible">True</setter>  
      </object>  
    </child>  
    <property name="content">  
      <object class="AdwOverlaySplitView" id="split_view">  
        <property name="min-sidebar-width">300</property>  
        <property name="max-sidebar-width">300</property>  
        <property name="show-sidebar"    
              bind-source="show_sidebar_button"    
              bind-property="active"    
              bind-flags="sync-create|bidirectional"/>  
        <property name="sidebar">  
          <object class="AdwNavigationPage">  
            <property name="title" translatable="yes" context="label" comments="Noun. Marks a list of password collections.">Stores</property>  
            <property name="child">  
              <object class="AdwToolbarView">  
                <child type="top">  
                  <object class="AdwHeaderBar" />  
                </child>  
                <property name="content">  
                  <object class="AdwPreferencesPage">  
                    <child>  
                      <object class="AdwPreferencesGroup" id="shortcuts_group">  
                        <!-- Dynamic rows will be added here via model binding -->  
                      </object>  
                    </child>  

                    <child>  
                      <object class="AdwPreferencesGroup">  
                        <child>  
                          <object class="AdwButtonRow" id="add_shortcut_button">  
                            <property name="start-icon-name">list-add-symbolic</property>
                            <property name="title" translatable="yes" context="button" comments="Verb. This button allows the user to add additional password collections.">Add</property>  
                          </object>  
                        </child>  
                      </object>  
                    </child>  
                  </object>  
                </property>  
              </object>  
            </property>  
          </object>  
        </property>  
        <property name="content">    
          <object class="AdwNavigationPage">    
            <property name="title" translatable="yes" context="label" comments="Noun, plural. Indicates the location of the actual decryptable passwords">Passwords</property>    
            <property name="child">    
              <object class="AdwToolbarView">  
                <child type="top">  
                  <object class="AdwHeaderBar">    
                    <child type="start">        
                      <object class="GtkBox">  
                        <property name="orientation">horizontal</property>  
                        <property name="spacing">6</property>  
                        <child>  
                          <object class="GtkToggleButton" id="search_button">  
                            <property name="icon-name">system-search-symbolic</property>  
                            <!--<signal name="notify::active" handler="search_button_toggled_cb"/>  -->
                          </object>  
                        </child>  
                        <child>  
                          <object class="GtkToggleButton" id="show_sidebar_button">        
                            <property name="icon-name">sidebar-show-symbolic</property>        
                            <property name="active">True</property>        
                            <property name="visible">False</property>      
                          </object>  
                        </child>  
                      </object>  
                    </child>      
                  </object>    
                </child>  
                <property name="content">  
                  <object class="AdwPreferencesPage">  
                    <child>  
                      <object class="AdwPreferencesGroup">  
                        <property name="title">Default</property>
                        <property name="description">/home/typo/.password-store</property>
                        <property name="header-suffix">
                          <object class="GtkButton">
                            <property name="icon-name">list-add-symbolic</property>
                            <property name="valign">center</property>
                            <style>
                              <class name="flat" />
                            </style>
                          </object>
                        </property>
                        <child>
                          <object class="AdwActionRow">
                            <property name="title">Sample password</property>
                          </object>
                        </child>
                        <child>
                          <object class="AdwActionRow">
                            <property name="title">Sample password 2</property>
                          </object>
                        </child>
                      </object>  
                    </child>  
                  </object>  
                </property>  
              </object>  
            </property>    
          </object>    
        </property>
      </object>  
    </property>  
  </object>  
</interface>