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148 lines
8.1 KiB
C
148 lines
8.1 KiB
C
/*
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* Copyright © 2018 Benjamin Otte
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#ifndef __GTK_SELECTION_MODEL_H__
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#define __GTK_SELECTION_MODEL_H__
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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#include <gtk/gtktypes.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_SELECTION_MODEL (gtk_selection_model_get_type ())
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GDK_AVAILABLE_IN_ALL
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G_DECLARE_INTERFACE (GtkSelectionModel, gtk_selection_model, GTK, SELECTION_MODEL, GListModel)
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/**
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* GtkSelectionModelInterface:
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* @is_selected: Return if the item at the given position is selected.
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* @get_selection_in_range: Return a bitset with all currently selected
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* items in the given range. By default, this function will call
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* `GtkSelectionModel::is_selected()` on all items in the given range.
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* @select_item: Select the item in the given position. If the operation
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* is known to fail, return %FALSE.
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* @unselect_item: Unselect the item in the given position. If the
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* operation is known to fail, return %FALSE.
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* @select_range: Select all items in the given range. If the operation
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* is unsupported or known to fail for all items, return %FALSE.
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* @unselect_range: Unselect all items in the given range. If the
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* operation is unsupported or known to fail for all items, return
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* %FALSE.
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* @select_all: Select all items in the model. If the operation is
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* unsupported or known to fail for all items, return %FALSE.
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* @unselect_all: Unselect all items in the model. If the operation is
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* unsupported or known to fail for all items, return %FALSE.
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* @set_selection: Set selection state of all items in mask to selected.
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* See gtk_selection_model_set_selection() for a detailed explanation
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* of this function.
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*
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* The list of virtual functions for the `GtkSelectionModel` interface.
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* No function must be implemented, but unless `GtkSelectionModel::is_selected()`
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* is implemented, it will not be possible to select items in the set.
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*
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* The model does not need to implement any functions to support either
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* selecting or unselecting items. Of course, if the model does not do that,
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* it means that users cannot select or unselect items in a list widget
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* using the model.
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*
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* All selection functions fall back to `GtkSelectionModel::set_selection()`
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* so it is sufficient to implement just that function for full selection
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* support.
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*/
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struct _GtkSelectionModelInterface
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{
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/*< private >*/
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GTypeInterface g_iface;
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/*< public >*/
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gboolean (* is_selected) (GtkSelectionModel *model,
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guint position);
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GtkBitset * (* get_selection_in_range) (GtkSelectionModel *model,
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guint position,
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guint n_items);
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gboolean (* select_item) (GtkSelectionModel *model,
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guint position,
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gboolean unselect_rest);
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gboolean (* unselect_item) (GtkSelectionModel *model,
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guint position);
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gboolean (* select_range) (GtkSelectionModel *model,
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guint position,
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guint n_items,
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gboolean unselect_rest);
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gboolean (* unselect_range) (GtkSelectionModel *model,
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guint position,
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guint n_items);
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gboolean (* select_all) (GtkSelectionModel *model);
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gboolean (* unselect_all) (GtkSelectionModel *model);
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gboolean (* set_selection) (GtkSelectionModel *model,
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GtkBitset *selected,
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GtkBitset *mask);
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};
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_selection_model_is_selected (GtkSelectionModel *model,
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guint position);
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GDK_AVAILABLE_IN_ALL
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GtkBitset * gtk_selection_model_get_selection (GtkSelectionModel *model);
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GDK_AVAILABLE_IN_ALL
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GtkBitset * gtk_selection_model_get_selection_in_range
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(GtkSelectionModel *model,
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guint position,
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guint n_items);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_selection_model_select_item (GtkSelectionModel *model,
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guint position,
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gboolean unselect_rest);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_selection_model_unselect_item (GtkSelectionModel *model,
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guint position);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_selection_model_select_range (GtkSelectionModel *model,
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guint position,
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guint n_items,
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gboolean unselect_rest);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_selection_model_unselect_range (GtkSelectionModel *model,
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guint position,
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guint n_items);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_selection_model_select_all (GtkSelectionModel *model);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_selection_model_unselect_all (GtkSelectionModel *model);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_selection_model_set_selection (GtkSelectionModel *model,
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GtkBitset *selected,
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GtkBitset *mask);
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/* for implementations only */
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GDK_AVAILABLE_IN_ALL
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void gtk_selection_model_selection_changed (GtkSelectionModel *model,
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guint position,
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guint n_items);
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G_END_DECLS
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#endif /* __GTK_SELECTION_MODEL_H__ */
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