[gnome-control-center/gbsneto/search-applications: 8/10] applications: Add search entry to the sidebar

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 8070940e6e50250d3df0f6b7d6d06b54432c8c8f
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Mar 29 19:51:06 2019 -0300

    applications: Add search entry to the sidebar
    
    This matches the current mockups [1] for the panel, and
    allows easily finding applications.
    
    [1] https://gitlab.gnome.org/Teams/Design/settings-mockups/raw/master/applications/applications-wires.png

 panels/applications/cc-applications-panel.c  | 68 +++++++++++++++++++++++++++-
 panels/applications/cc-applications-panel.ui | 26 +++++++++--
 2 files changed, 90 insertions(+), 4 deletions(-)
---
diff --git a/panels/applications/cc-applications-panel.c b/panels/applications/cc-applications-panel.c
index 21a34bb4d..57a6d49ad 100644
--- a/panels/applications/cc-applications-panel.c
+++ b/panels/applications/cc-applications-panel.c
@@ -31,6 +31,7 @@
 #include "cc-info-row.h"
 #include "cc-action-row.h"
 #include "cc-applications-resources.h"
+#include "cc-util.h"
 #include "globs.h"
 #include "list-box-helper.h"
 #include "search.h"
@@ -44,7 +45,9 @@ struct _CcApplicationsPanel
 {
   CcPanel          parent;
 
+  GtkWidget       *sidebar_box;
   GtkListBox      *sidebar_listbox;
+  GtkEntry        *sidebar_search_entry;
   GtkWidget       *header_button;
   GtkWidget       *title_label;
   GAppInfoMonitor *monitor;
@@ -1433,6 +1436,26 @@ compare_rows (GtkListBoxRow *row1,
   return strcmp (key1, key2);
 }
 
+static gboolean
+filter_sidebar_rows (GtkListBoxRow *row,
+                     gpointer       data)
+{
+  CcApplicationsPanel *self = CC_APPLICATIONS_PANEL (data);
+  g_autofree gchar *app_name = NULL;
+  g_autofree gchar *search_text = NULL;
+  GAppInfo *info;
+
+  /* Only filter after the second character */
+  if (gtk_entry_get_text_length (self->sidebar_search_entry) < 2)
+    return TRUE;
+
+  info = cc_applications_row_get_info (CC_APPLICATIONS_ROW (row));
+  app_name = cc_util_normalize_casefold_and_unaccent (g_app_info_get_name (info));
+  search_text = cc_util_normalize_casefold_and_unaccent (gtk_entry_get_text (self->sidebar_search_entry));
+
+  return g_strstr_len (app_name, -1, search_text) != NULL;
+}
+
 static void
 apps_changed (GAppInfoMonitor     *monitor,
               CcApplicationsPanel *self)
@@ -1492,6 +1515,40 @@ select_app (CcApplicationsPanel *self,
     }
 }
 
+static void
+on_sidebar_search_entry_activated_cb (GtkSearchEntry      *search_entry,
+                                      CcApplicationsPanel *self)
+{
+  GtkListBoxRow *row;
+
+  row = gtk_list_box_get_row_at_y (self->sidebar_listbox, 0);
+
+  if (!row)
+    return;
+
+  /* Show the app */
+  gtk_list_box_select_row (self->sidebar_listbox, row);
+  g_signal_emit_by_name (row, "activate");
+
+  /* Cleanup the entry */
+  gtk_entry_set_text (self->sidebar_search_entry, "");
+  gtk_widget_grab_focus (GTK_WIDGET (self->sidebar_search_entry));
+}
+
+static void
+on_sidebar_search_entry_search_changed_cb (GtkSearchEntry      *search_entry,
+                                           CcApplicationsPanel *self)
+{
+  gtk_list_box_invalidate_filter (self->sidebar_listbox);
+}
+
+static void
+on_sidebar_search_entry_search_stopped_cb (GtkSearchEntry      *search_entry,
+                                           CcApplicationsPanel *self)
+{
+  gtk_entry_set_text (self->sidebar_search_entry, "");
+}
+
 static void
 cc_applications_panel_dispose (GObject *object)
 {
@@ -1577,7 +1634,7 @@ static GtkWidget*
 cc_applications_panel_get_sidebar_widget (CcPanel *panel)
 {
   CcApplicationsPanel *self = CC_APPLICATIONS_PANEL (panel);
-  return GTK_WIDGET (self->sidebar_listbox);
+  return self->sidebar_box;
 }
 
 static GtkWidget *
@@ -1631,7 +1688,9 @@ cc_applications_panel_class_init (CcApplicationsPanelClass *klass)
   gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, notification);
   gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, permission_section);
   gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, permission_list);
+  gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, sidebar_box);
   gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, sidebar_listbox);
+  gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, sidebar_search_entry);
   gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, search);
   gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, sound);
   gtk_widget_class_bind_template_child (widget_class, CcApplicationsPanel, stack);
@@ -1656,6 +1715,9 @@ cc_applications_panel_class_init (CcApplicationsPanelClass *klass)
   gtk_widget_class_bind_template_callback (widget_class, storage_row_activated_cb);
   gtk_widget_class_bind_template_callback (widget_class, open_software_cb);
   gtk_widget_class_bind_template_callback (widget_class, handler_reset_cb);
+  gtk_widget_class_bind_template_callback (widget_class, on_sidebar_search_entry_activated_cb);
+  gtk_widget_class_bind_template_callback (widget_class, on_sidebar_search_entry_search_changed_cb);
+  gtk_widget_class_bind_template_callback (widget_class, on_sidebar_search_entry_search_stopped_cb);
 }
 
 static void
@@ -1711,6 +1773,10 @@ cc_applications_panel_init (CcApplicationsPanel *self)
                               compare_rows,
                               NULL, NULL);
 
+  gtk_list_box_set_filter_func (self->sidebar_listbox,
+                                filter_sidebar_rows,
+                                self, NULL);
+
   self->location_settings = g_settings_new ("org.gnome.system.location");
   self->privacy_settings = g_settings_new ("org.gnome.desktop.privacy");
   self->search_settings = g_settings_new ("org.gnome.desktop.search-providers");
diff --git a/panels/applications/cc-applications-panel.ui b/panels/applications/cc-applications-panel.ui
index b4fbbfc79..ea0bca9de 100644
--- a/panels/applications/cc-applications-panel.ui
+++ b/panels/applications/cc-applications-panel.ui
@@ -412,9 +412,29 @@
     <property name="visible">1</property>
     <property name="label" translatable="yes">Open in Software</property>
   </object>
-  <object class="GtkListBox" id="sidebar_listbox">
-    <property name="visible">1</property>
-    <property name="selection-mode">browse</property>
+
+  <!-- Sidebar -->
+  <object class="GtkBox" id="sidebar_box">
+    <property name="visible">True</property>
+    <property name="orientation">vertical</property>
+    <child>
+      <object class="GtkSearchEntry" id="sidebar_search_entry">
+        <property name="visible">True</property>
+        <property name="can-focus">True</property>
+        <property name="has-focus">True</property>
+        <property name="margin">12</property>
+        <property name="margin-bottom">6</property>
+        <signal name="activate" handler="on_sidebar_search_entry_activated_cb" object="CcApplicationsPanel" 
swapped="no" />
+        <signal name="search-changed" handler="on_sidebar_search_entry_search_changed_cb" 
object="CcApplicationsPanel" swapped="no" />
+        <signal name="stop-search" handler="on_sidebar_search_entry_search_stopped_cb" 
object="CcApplicationsPanel" swapped="no" />
+      </object>
+    </child>
+    <child>
+      <object class="GtkListBox" id="sidebar_listbox">
+        <property name="visible">True</property>
+        <property name="selection-mode">browse</property>
+      </object>
+    </child>
   </object>
 
   <!-- Built-in Permissions dialog -->