[gtk/gbsneto/filechooser-column-view: 10/47] filechooserwidget: Replace 'list' page with column view

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

commit c7bf83fc0e02b290bb169e65bee656a81edd156f
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Oct 7 17:48:26 2022 -0300

    filechooserwidget: Replace 'list' page with column view
    
    Replace the 'list' page of the main stack with another page, this
    one containing a GtkColumnView. This, again, is the very minimal
    code to achieve a column view - and validate the GListModel code
    introduced in the previous commit - but there's a long way until
    this column view covers the full range of features of the file
    chooser.
    
    The tree view still lives in an unused 'list2' page. From now on,
    commits will "cannibalize" the treeview, each commit porting any
    particular feature - be it a column, an event controller, etc -
    to the column view, and dropping the corresponding feature from
    the treeview.

 gtk/gtkfilechooserwidget.c     | 23 +++++++++++++++++++++++
 gtk/ui/gtkfilechooserwidget.ui | 30 ++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)
---
diff --git a/gtk/gtkfilechooserwidget.c b/gtk/gtkfilechooserwidget.c
index 8b00a40e65..0260015da5 100644
--- a/gtk/gtkfilechooserwidget.c
+++ b/gtk/gtkfilechooserwidget.c
@@ -27,6 +27,7 @@
 #include "deprecated/gtkcellrendererpixbuf.h"
 #include "deprecated/gtkcellrenderertext.h"
 #include "gtkdropdown.h"
+#include "gtkcolumnview.h"
 #include "gtkcssnumbervalueprivate.h"
 #include "gtkdragsource.h"
 #include "gtkdroptarget.h"
@@ -43,6 +44,7 @@
 #include "gtkmarshalers.h"
 #include "gtkmessagedialog.h"
 #include "gtkmountoperation.h"
+#include "gtkmultiselection.h"
 #include "gtkpaned.h"
 #include "gtkpathbarprivate.h"
 #include "gtkplacessidebarprivate.h"
@@ -51,6 +53,7 @@
 #include "gtkrecentmanager.h"
 #include "gtksearchentryprivate.h"
 #include "gtksettings.h"
+#include "gtksingleselection.h"
 #include "gtksizegroup.h"
 #include "gtksizerequest.h"
 #include "gtkstack.h"
@@ -189,6 +192,7 @@ struct _GtkFileChooserWidget
   GtkWidget *browse_files_stack;
   GtkWidget *browse_files_swin;
   GtkWidget *browse_files_tree_view;
+  GtkWidget *browse_files_column_view;
   GtkWidget *remote_warning_bar;
 
   GtkWidget *browse_files_popover;
@@ -209,6 +213,8 @@ struct _GtkFileChooserWidget
   GtkFileSystemModel *browse_files_model;
   char *browse_files_last_selected_name;
 
+  GtkSelectionModel *browse_files_selection_model;
+
   GtkWidget *places_sidebar;
   GtkWidget *places_view;
   StartupMode startup_mode;
@@ -2612,6 +2618,14 @@ set_select_multiple (GtkFileChooserWidget *impl,
 
   gtk_tree_view_set_rubber_banding (GTK_TREE_VIEW (impl->browse_files_tree_view), select_multiple);
 
+  g_clear_object (&impl->browse_files_selection_model);
+  impl->browse_files_selection_model = select_multiple
+    ? GTK_SELECTION_MODEL (gtk_multi_selection_new (G_LIST_MODEL (impl->browse_files_model)))
+    : GTK_SELECTION_MODEL (gtk_single_selection_new (G_LIST_MODEL (impl->browse_files_model)));
+
+  gtk_column_view_set_model (GTK_COLUMN_VIEW (impl->browse_files_column_view),
+                             GTK_SELECTION_MODEL (impl->browse_files_selection_model));
+
   impl->select_multiple = select_multiple;
   g_object_notify (G_OBJECT (impl), "select-multiple");
 }
@@ -4670,6 +4684,14 @@ set_list_model (GtkFileChooserWidget  *impl,
 
   _gtk_file_system_model_set_filter (impl->browse_files_model, impl->current_filter);
 
+  g_clear_object (&impl->browse_files_selection_model);
+  impl->browse_files_selection_model = impl->select_multiple
+    ? GTK_SELECTION_MODEL (gtk_multi_selection_new (G_LIST_MODEL (impl->browse_files_model)))
+    : GTK_SELECTION_MODEL (gtk_single_selection_new (G_LIST_MODEL (impl->browse_files_model)));
+
+  gtk_column_view_set_model (GTK_COLUMN_VIEW (impl->browse_files_column_view),
+                             GTK_SELECTION_MODEL (impl->browse_files_selection_model));
+
   return TRUE;
 }
 
@@ -7689,6 +7711,7 @@ gtk_file_chooser_widget_class_init (GtkFileChooserWidgetClass *class)
   gtk_widget_class_bind_template_child (widget_class, GtkFileChooserWidget, browse_files_stack);
   gtk_widget_class_bind_template_child (widget_class, GtkFileChooserWidget, places_sidebar);
   gtk_widget_class_bind_template_child (widget_class, GtkFileChooserWidget, places_view);
+  gtk_widget_class_bind_template_child (widget_class, GtkFileChooserWidget, browse_files_column_view);
   gtk_widget_class_bind_template_child (widget_class, GtkFileChooserWidget, browse_files_tree_view);
   gtk_widget_class_bind_template_child (widget_class, GtkFileChooserWidget, browse_files_swin);
   gtk_widget_class_bind_template_child (widget_class, GtkFileChooserWidget, browse_header_revealer);
diff --git a/gtk/ui/gtkfilechooserwidget.ui b/gtk/ui/gtkfilechooserwidget.ui
index 22cd76a881..379bdbdae3 100644
--- a/gtk/ui/gtkfilechooserwidget.ui
+++ b/gtk/ui/gtkfilechooserwidget.ui
@@ -132,6 +132,36 @@
                             <child>
                               <object class="GtkStackPage">
                                 <property name="name">list</property>
+                                <property name="child">
+                                  <object class="GtkBox">
+                                    <property name="orientation">1</property>
+                                    <child>
+                                      <object class="GtkScrolledWindow">
+                                        <property name="hscrollbar-policy">2</property>
+                                        <property name="vexpand">1</property>
+                                        <child>
+                                          <object class="GtkColumnView" id="browse_files_column_view">
+                                          </object>
+                                        </child>
+                                      </object>
+                                    </child>
+                                    <child>
+                                      <object class="GtkActionBar" id="remote_warning_bar2">
+                                        <property name="visible">0</property>
+                                        <child type="center">
+                                          <object class="GtkLabel">
+                                            <property name="label" translatable="yes">Remote location — only 
searching the current folder</property>
+                                          </object>
+                                        </child>
+                                      </object>
+                                    </child>
+                                  </object>
+                                </property>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkStackPage">
+                                <property name="name">list2</property>
                                 <property name="child">
                                   <object class="GtkBox">
                                     <property name="orientation">1</property>