Adding upstream version 43.2.upstream/43.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 422 insertions, 0 deletions

diff --git a/src/nautilus-view-model.c b/src/nautilus-view-model.c
new file mode 100644
index 0000000..2cb1c47
--- /dev/null
+++ b/src/nautilus-view-model.c
@@ -0,0 +1,422 @@
+#include "nautilus-view-model.h"
+#include "nautilus-view-item.h"
+#include "nautilus-global-preferences.h"
+
+struct _NautilusViewModel
+{
+    GObject parent_instance;
+
+    GHashTable *map_files_to_model;
+    GListStore *internal_model;
+    GtkMultiSelection *selection_model;
+    GtkSorter *sorter;
+    gulong sorter_changed_id;
+};
+
+static GType
+nautilus_view_model_get_item_type (GListModel *list)
+{
+    return NAUTILUS_TYPE_VIEW_ITEM;
+}
+
+static guint
+nautilus_view_model_get_n_items (GListModel *list)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (list);
+
+    if (self->internal_model == NULL)
+    {
+        return 0;
+    }
+
+    return g_list_model_get_n_items (G_LIST_MODEL (self->internal_model));
+}
+
+static gpointer
+nautilus_view_model_get_item (GListModel *list,
+                              guint       position)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (list);
+
+    if (self->internal_model == NULL)
+    {
+        return NULL;
+    }
+
+    return g_list_model_get_item (G_LIST_MODEL (self->internal_model), position);
+}
+
+static void
+nautilus_view_model_list_model_init (GListModelInterface *iface)
+{
+    iface->get_item_type = nautilus_view_model_get_item_type;
+    iface->get_n_items = nautilus_view_model_get_n_items;
+    iface->get_item = nautilus_view_model_get_item;
+}
+
+
+static gboolean
+nautilus_view_model_is_selected (GtkSelectionModel *model,
+                                 guint              position)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (model);
+    GtkSelectionModel *selection_model = GTK_SELECTION_MODEL (self->selection_model);
+
+    return gtk_selection_model_is_selected (selection_model, position);
+}
+
+static GtkBitset *
+nautilus_view_model_get_selection_in_range (GtkSelectionModel *model,
+                                            guint              pos,
+                                            guint              n_items)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (model);
+    GtkSelectionModel *selection_model = GTK_SELECTION_MODEL (self->selection_model);
+
+    return gtk_selection_model_get_selection_in_range (selection_model, pos, n_items);
+}
+
+static gboolean
+nautilus_view_model_set_selection (GtkSelectionModel *model,
+                                   GtkBitset         *selected,
+                                   GtkBitset         *mask)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (model);
+    GtkSelectionModel *selection_model = GTK_SELECTION_MODEL (self->selection_model);
+    gboolean res;
+
+    res = gtk_selection_model_set_selection (selection_model, selected, mask);
+
+    return res;
+}
+
+
+static void
+nautilus_view_model_selection_model_init (GtkSelectionModelInterface *iface)
+{
+    iface->is_selected = nautilus_view_model_is_selected;
+    iface->get_selection_in_range = nautilus_view_model_get_selection_in_range;
+    iface->set_selection = nautilus_view_model_set_selection;
+}
+
+G_DEFINE_TYPE_WITH_CODE (NautilusViewModel, nautilus_view_model, G_TYPE_OBJECT,
+                         G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL,
+                                                nautilus_view_model_list_model_init)
+                         G_IMPLEMENT_INTERFACE (GTK_TYPE_SELECTION_MODEL,
+                                                nautilus_view_model_selection_model_init))
+
+enum
+{
+    PROP_0,
+    PROP_SORTER,
+    N_PROPS
+};
+
+static GParamSpec *properties[N_PROPS] = { NULL, };
+
+static void
+dispose (GObject *object)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (object);
+
+    if (self->selection_model != NULL)
+    {
+        g_signal_handlers_disconnect_by_func (self->selection_model,
+                                              gtk_selection_model_selection_changed,
+                                              self);
+        g_object_unref (self->selection_model);
+        self->selection_model = NULL;
+    }
+
+    if (self->internal_model != NULL)
+    {
+        g_signal_handlers_disconnect_by_func (self->internal_model,
+                                              g_list_model_items_changed,
+                                              self);
+        g_object_unref (self->internal_model);
+        self->internal_model = NULL;
+    }
+
+    g_clear_signal_handler (&self->sorter_changed_id, self->sorter);
+
+    G_OBJECT_CLASS (nautilus_view_model_parent_class)->dispose (object);
+}
+
+static void
+finalize (GObject *object)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (object);
+
+    G_OBJECT_CLASS (nautilus_view_model_parent_class)->finalize (object);
+
+    g_hash_table_destroy (self->map_files_to_model);
+    g_clear_object (&self->sorter);
+}
+
+static void
+get_property (GObject    *object,
+              guint       prop_id,
+              GValue     *value,
+              GParamSpec *pspec)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (object);
+
+    switch (prop_id)
+    {
+        case PROP_SORTER:
+        {
+            g_value_set_object (value, nautilus_view_model_get_sorter (self));
+        }
+        break;
+
+        default:
+        {
+            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+        }
+    }
+}
+
+static void
+set_property (GObject      *object,
+              guint         prop_id,
+              const GValue *value,
+              GParamSpec   *pspec)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (object);
+
+    switch (prop_id)
+    {
+        case PROP_SORTER:
+        {
+            nautilus_view_model_set_sorter (self, g_value_get_object (value));
+        }
+        break;
+
+        default:
+        {
+            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+        }
+    }
+}
+
+static void
+constructed (GObject *object)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (object);
+
+    G_OBJECT_CLASS (nautilus_view_model_parent_class)->constructed (object);
+
+    self->internal_model = g_list_store_new (NAUTILUS_TYPE_VIEW_ITEM);
+    self->selection_model = gtk_multi_selection_new (g_object_ref (G_LIST_MODEL (self->internal_model)));
+    self->map_files_to_model = g_hash_table_new (NULL, NULL);
+
+    g_signal_connect_swapped (self->internal_model, "items-changed",
+                              G_CALLBACK (g_list_model_items_changed), self);
+    g_signal_connect_swapped (self->selection_model, "selection-changed",
+                              G_CALLBACK (gtk_selection_model_selection_changed), self);
+}
+
+static void
+nautilus_view_model_class_init (NautilusViewModelClass *klass)
+{
+    GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+    object_class->dispose = dispose;
+    object_class->finalize = finalize;
+    object_class->get_property = get_property;
+    object_class->set_property = set_property;
+    object_class->constructed = constructed;
+
+    properties[PROP_SORTER] =
+        g_param_spec_object ("sorter",
+                             "", "",
+                             GTK_TYPE_SORTER,
+                             G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+    g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+nautilus_view_model_init (NautilusViewModel *self)
+{
+}
+
+static gint
+compare_data_func (gconstpointer a,
+                   gconstpointer b,
+                   gpointer      user_data)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (user_data);
+
+    if (self->sorter == NULL)
+    {
+        return GTK_ORDERING_EQUAL;
+    }
+
+    return gtk_sorter_compare (self->sorter, (gpointer) a, (gpointer) b);
+}
+
+static void
+on_sorter_changed (GtkSorter       *sorter,
+                   GtkSorterChange  change,
+                   gpointer         user_data)
+{
+    NautilusViewModel *self = NAUTILUS_VIEW_MODEL (user_data);
+
+    g_list_store_sort (self->internal_model, compare_data_func, self);
+}
+
+NautilusViewModel *
+nautilus_view_model_new (void)
+{
+    return g_object_new (NAUTILUS_TYPE_VIEW_MODEL, NULL);
+}
+
+GtkSorter *
+nautilus_view_model_get_sorter (NautilusViewModel *self)
+{
+    return self->sorter;
+}
+
+void
+nautilus_view_model_set_sorter (NautilusViewModel *self,
+                                GtkSorter         *sorter)
+{
+    if (self->sorter != NULL)
+    {
+        g_clear_signal_handler (&self->sorter_changed_id, self->sorter);
+    }
+
+    if (g_set_object (&self->sorter, sorter))
+    {
+        g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SORTER]);
+    }
+
+    if (self->sorter != NULL)
+    {
+        self->sorter_changed_id = g_signal_connect (self->sorter, "changed",
+                                                    G_CALLBACK (on_sorter_changed), self);
+        g_list_store_sort (self->internal_model, compare_data_func, self);
+    }
+}
+
+GQueue *
+nautilus_view_model_get_items_from_files (NautilusViewModel *self,
+                                          GQueue            *files)
+{
+    GList *l;
+    guint n_items;
+    GQueue *items;
+
+    n_items = g_list_model_get_n_items (G_LIST_MODEL (self->internal_model));
+    items = g_queue_new ();
+    for (l = g_queue_peek_head_link (files); l != NULL; l = l->next)
+    {
+        NautilusFile *file1;
+
+        file1 = NAUTILUS_FILE (l->data);
+        for (guint i = 0; i < n_items; i++)
+        {
+            g_autoptr (NautilusViewItem) item = NULL;
+            NautilusFile *file2;
+            g_autofree gchar *file1_uri = NULL;
+            g_autofree gchar *file2_uri = NULL;
+
+            item = g_list_model_get_item (G_LIST_MODEL (self->internal_model), i);
+            file2 = nautilus_view_item_get_file (item);
+            file1_uri = nautilus_file_get_uri (file1);
+            file2_uri = nautilus_file_get_uri (file2);
+            if (g_strcmp0 (file1_uri, file2_uri) == 0)
+            {
+                g_queue_push_tail (items, item);
+                break;
+            }
+        }
+    }
+
+    return items;
+}
+
+NautilusViewItem *
+nautilus_view_model_get_item_from_file (NautilusViewModel *self,
+                                        NautilusFile      *file)
+{
+    return g_hash_table_lookup (self->map_files_to_model, file);
+}
+
+void
+nautilus_view_model_remove_item (NautilusViewModel *self,
+                                 NautilusViewItem  *item)
+{
+    guint i;
+
+    if (g_list_store_find (self->internal_model, item, &i))
+    {
+        NautilusFile *file;
+
+        file = nautilus_view_item_get_file (item);
+        g_list_store_remove (self->internal_model, i);
+        g_hash_table_remove (self->map_files_to_model, file);
+    }
+}
+
+void
+nautilus_view_model_remove_all_items (NautilusViewModel *self)
+{
+    g_list_store_remove_all (self->internal_model);
+    g_hash_table_remove_all (self->map_files_to_model);
+}
+
+void
+nautilus_view_model_add_item (NautilusViewModel *self,
+                              NautilusViewItem  *item)
+{
+    g_hash_table_insert (self->map_files_to_model,
+                         nautilus_view_item_get_file (item),
+                         item);
+    g_list_store_insert_sorted (self->internal_model, item, compare_data_func, self);
+}
+
+void
+nautilus_view_model_add_items (NautilusViewModel *self,
+                               GQueue            *items)
+{
+    g_autofree gpointer *array = NULL;
+    GList *l;
+    int i = 0;
+
+    /* Sort items before adding them to the internal model. This ensures that
+     * the first sorted item is become the initial focus and scroll anchor. */
+    g_queue_sort (items, compare_data_func, self);
+
+    array = g_malloc_n (g_queue_get_length (items),
+                        sizeof (NautilusViewItem *));
+
+    for (l = g_queue_peek_head_link (items); l != NULL; l = l->next)
+    {
+        array[i] = l->data;
+        g_hash_table_insert (self->map_files_to_model,
+                             nautilus_view_item_get_file (l->data),
+                             l->data);
+        i++;
+    }
+
+    g_list_store_splice (self->internal_model,
+                         g_list_model_get_n_items (G_LIST_MODEL (self->internal_model)),
+                         0, array, g_queue_get_length (items));
+
+    g_list_store_sort (self->internal_model, compare_data_func, self);
+}
+
+guint
+nautilus_view_model_get_index (NautilusViewModel *self,
+                               NautilusViewItem  *item)
+{
+    guint i = G_MAXUINT;
+    gboolean found;
+
+    found = g_list_store_find (self->internal_model, item, &i);
+    g_warn_if_fail (found);
+
+    return i;
+}