[gnome-usage/tracker-powered-storage-view-wip] storage: Make working row for navigation up in files hierarchy

[Felipe Borges <felipeborges src gnome org>]

commit b7e5210af5d9ad47929c7e83d7349204a683c630
Author: Petr Štětka <pstetka redhat com>
Date:   Tue Jun 19 15:47:49 2018 +0200

    storage: Make working row for navigation up in files hierarchy

 data/interface/adwaita.css         | 17 +++++++++++++++++
 src/storage/storage-view-item.vala |  1 +
 src/storage/storage-view-row.vala  |  5 ++++-
 src/storage/storage-view.vala      | 13 ++++++++-----
 4 files changed, 30 insertions(+), 6 deletions(-)
---
diff --git a/data/interface/adwaita.css b/data/interface/adwaita.css
index 105a46e..fe25794 100644
--- a/data/interface/adwaita.css
+++ b/data/interface/adwaita.css
@@ -191,3 +191,20 @@ ColorRectangle.available-storage, StorageGraph.available-storage {
 box.storage {
     background-color: #ffffff;
 }
+
+row.up-folder:not(:hover) {
+    background: @theme_base_color;
+}
+
+dzlstacklist list {
+    border-color: @borders;
+    border-left: none;
+    border-right: none;
+    border-bottom: none;
+}
+
+dzlstacklist list.stack-header {
+    padding-bottom: 1px;
+    margin: 0px;
+    border:none;
+}
\ No newline at end of file
diff --git a/src/storage/storage-view-item.vala b/src/storage/storage-view-item.vala
index 78cb172..7d165d8 100644
--- a/src/storage/storage-view-item.vala
+++ b/src/storage/storage-view-item.vala
@@ -28,6 +28,7 @@ public class Usage.StorageViewItem : GLib.Object {
     public FileType type;
     public UserDirectory? dir;
     public string ontology;
+    public string? custom_type;
 
     private string _style_class = null;
     public string style_class {
diff --git a/src/storage/storage-view-row.vala b/src/storage/storage-view-row.vala
index 2e9170b..be0dd94 100644
--- a/src/storage/storage-view-row.vala
+++ b/src/storage/storage-view-row.vala
@@ -63,7 +63,10 @@ public class Usage.StorageViewRow : Gtk.ListBoxRow {
 
         tag.get_style_context ().add_class (item.style_class);
 
-        if (item.type == FileType.DIRECTORY)
+        if (item.type == FileType.DIRECTORY || item.custom_type != null)
             tag.width_request = tag.height_request = 20;
+
+        if(item.custom_type == "up-folder")
+            get_style_context().add_class("up-folder");
     }
 }
diff --git a/src/storage/storage-view.vala b/src/storage/storage-view.vala
index c0af07e..75ed928 100644
--- a/src/storage/storage-view.vala
+++ b/src/storage/storage-view.vala
@@ -77,8 +77,10 @@ public class Usage.NewStorageView : Usage.View {
     private void on_row_activated (Gtk.ListBoxRow row) {
         var storage_row = row as StorageViewRow;
 
-        if (storage_row.item.type == FileType.DIRECTORY) {
-            present_dir.begin (storage_row.item.uri);        
+        if(storage_row.item.custom_type == "up-folder") {
+            listbox.pop();
+        } else if (storage_row.item.type == FileType.DIRECTORY) {
+            present_dir.begin (storage_row.item.uri);
         } else {
             graph.queue_draw ();
         }
@@ -118,9 +120,10 @@ public class Usage.NewStorageView : Usage.View {
 
             var file = File.new_for_uri (uri);
             var item = new StorageViewItem.from_file (file);
-            var row = new StorageViewRow.from_item (item);
+            item.custom_type = "up-folder";
 
-            listbox.push (row, model, create_file_row);
+            model.insert(0, item);
+            listbox.push (new Gtk.ListBoxRow(), model, create_file_row);
 
             graph.model = model;
         } catch (GLib.Error error) {
@@ -188,7 +191,7 @@ public class Usage.NewStorageView : Usage.View {
             model.append (item);
         }
 
-        listbox.push (os_row, model, create_file_row);
+        listbox.push (new Gtk.ListBoxRow(), model, create_file_row);
         graph.model = model;
     }
 }