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/*
 * e-attachment-tree-view.c
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-attachment-tree-view.h"

#include <glib/gi18n.h>
#include <libebackend/e-extensible.h>

#include "e-attachment.h"
#include "e-attachment-store.h"
#include "e-attachment-view.h"

struct _EAttachmentTreeViewPrivate {
    EAttachmentViewPrivate view_priv;
};

enum {
    PROP_0,
    PROP_DRAGGING,
    PROP_EDITABLE
};

/* Forward Declarations */
static void e_attachment_tree_view_interface_init
                    (EAttachmentViewInterface *interface);

G_DEFINE_TYPE_WITH_CODE (
    EAttachmentTreeView,
    e_attachment_tree_view,
    GTK_TYPE_TREE_VIEW,
    G_IMPLEMENT_INTERFACE (
        E_TYPE_ATTACHMENT_VIEW,
        e_attachment_tree_view_interface_init)
    G_IMPLEMENT_INTERFACE (
        E_TYPE_EXTENSIBLE, NULL))

static void
attachment_tree_view_set_property (GObject *object,
                                   guint property_id,
                                   const GValue *value,
                                   GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_DRAGGING:
            e_attachment_view_set_dragging (
                E_ATTACHMENT_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_EDITABLE:
            e_attachment_view_set_editable (
                E_ATTACHMENT_VIEW (object),
                g_value_get_boolean (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
attachment_tree_view_get_property (GObject *object,
                                   guint property_id,
                                   GValue *value,
                                   GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_DRAGGING:
            g_value_set_boolean (
                value, e_attachment_view_get_dragging (
                E_ATTACHMENT_VIEW (object)));
            return;

        case PROP_EDITABLE:
            g_value_set_boolean (
                value, e_attachment_view_get_editable (
                E_ATTACHMENT_VIEW (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
attachment_tree_view_dispose (GObject *object)
{
    e_attachment_view_dispose (E_ATTACHMENT_VIEW (object));

    /* Chain up to parent's dispose() method. */
    G_OBJECT_CLASS (e_attachment_tree_view_parent_class)->dispose (object);
}

static void
attachment_tree_view_finalize (GObject *object)
{
    e_attachment_view_finalize (E_ATTACHMENT_VIEW (object));

    /* Chain up to parent's finalize() method. */
    G_OBJECT_CLASS (e_attachment_tree_view_parent_class)->finalize (object);
}

static void
attachment_tree_view_render_size (GtkTreeViewColumn *column,
                                  GtkCellRenderer *renderer,
                                  GtkTreeModel *model,
                                  GtkTreeIter *iter)
{
    gchar *display_size = NULL;
    gint column_id;
    guint64 size;

    column_id = E_ATTACHMENT_STORE_COLUMN_SIZE;
    gtk_tree_model_get (model, iter, column_id, &size, -1);

    if (size > 0)
        display_size = g_format_size_for_display ((goffset) size);

    g_object_set (renderer, "text", display_size, NULL);

    g_free (display_size);
}

static gboolean
attachment_tree_view_button_press_event (GtkWidget *widget,
                                         GdkEventButton *event)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    if (e_attachment_view_button_press_event (view, event))
        return TRUE;

    /* Chain up to parent's button_press_event() method. */
    return GTK_WIDGET_CLASS (e_attachment_tree_view_parent_class)->
        button_press_event (widget, event);
}

static gboolean
attachment_tree_view_button_release_event (GtkWidget *widget,
                                           GdkEventButton *event)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    if (e_attachment_view_button_release_event (view, event))
        return TRUE;

    /* Chain up to parent's button_release_event() method. */
    return GTK_WIDGET_CLASS (e_attachment_tree_view_parent_class)->
        button_release_event (widget, event);
}

static gboolean
attachment_tree_view_motion_notify_event (GtkWidget *widget,
                                          GdkEventMotion *event)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    if (e_attachment_view_motion_notify_event (view, event))
        return TRUE;

    /* Chain up to parent's motion_notify_event() method. */
    return GTK_WIDGET_CLASS (e_attachment_tree_view_parent_class)->
        motion_notify_event (widget, event);
}

static gboolean
attachment_tree_view_key_press_event (GtkWidget *widget,
                                      GdkEventKey *event)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    if (e_attachment_view_key_press_event (view, event))
        return TRUE;

    /* Chain up to parent's key_press_event() method. */
    return GTK_WIDGET_CLASS (e_attachment_tree_view_parent_class)->
        key_press_event (widget, event);
}

static void
attachment_tree_view_drag_begin (GtkWidget *widget,
                                 GdkDragContext *context)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    /* Chain up to parent's drag_begin() method. */
    GTK_WIDGET_CLASS (e_attachment_tree_view_parent_class)->
        drag_begin (widget, context);

    e_attachment_view_drag_begin (view, context);
}

static void
attachment_tree_view_drag_end (GtkWidget *widget,
                               GdkDragContext *context)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    /* Chain up to parent's drag_end() method. */
    GTK_WIDGET_CLASS (e_attachment_tree_view_parent_class)->
        drag_end (widget, context);

    e_attachment_view_drag_end (view, context);
}

static void
attachment_tree_view_drag_data_get (GtkWidget *widget,
                                    GdkDragContext *context,
                                    GtkSelectionData *selection,
                                    guint info,
                                    guint time)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    e_attachment_view_drag_data_get (
        view, context, selection, info, time);
}

static gboolean
attachment_tree_view_drag_motion (GtkWidget *widget,
                                  GdkDragContext *context,
                                  gint x,
                                  gint y,
                                  guint time)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    return e_attachment_view_drag_motion (view, context, x, y, time);
}

static gboolean
attachment_tree_view_drag_drop (GtkWidget *widget,
                                GdkDragContext *context,
                                gint x,
                                gint y,
                                guint time)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    if (!e_attachment_view_drag_drop (view, context, x, y, time))
        return FALSE;

    /* Chain up to parent's drag_drop() method. */
    return GTK_WIDGET_CLASS (e_attachment_tree_view_parent_class)->
        drag_drop (widget, context, x, y, time);
}

static void
attachment_tree_view_drag_data_received (GtkWidget *widget,
                                         GdkDragContext *context,
                                         gint x,
                                         gint y,
                                         GtkSelectionData *selection,
                                         guint info,
                                         guint time)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    e_attachment_view_drag_data_received (
        view, context, x, y, selection, info, time);
}

static gboolean
attachment_tree_view_popup_menu (GtkWidget *widget)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (widget);

    e_attachment_view_show_popup_menu (view, NULL, NULL, NULL);

    return TRUE;
}

static void
attachment_tree_view_row_activated (GtkTreeView *tree_view,
                                    GtkTreePath *path,
                                    GtkTreeViewColumn *column)
{
    EAttachmentView *view = E_ATTACHMENT_VIEW (tree_view);

    e_attachment_view_open_path (view, path, NULL);
}

static EAttachmentViewPrivate *
attachment_tree_view_get_private (EAttachmentView *view)
{
    EAttachmentTreeViewPrivate *priv;

    priv = E_ATTACHMENT_TREE_VIEW (view)->priv;

    return &priv->view_priv;
}

static EAttachmentStore *
attachment_tree_view_get_store (EAttachmentView *view)
{
    GtkTreeView *tree_view;
    GtkTreeModel *model;

    tree_view = GTK_TREE_VIEW (view);
    model = gtk_tree_view_get_model (tree_view);

    return E_ATTACHMENT_STORE (model);
}

static GtkTreePath *
attachment_tree_view_get_path_at_pos (EAttachmentView *view,
                                      gint x,
                                      gint y)
{
    GtkTreeView *tree_view;
    GtkTreePath *path;
    gboolean row_exists;

    tree_view = GTK_TREE_VIEW (view);

    row_exists = gtk_tree_view_get_path_at_pos (
        tree_view, x, y, &path, NULL, NULL, NULL);

    return row_exists ? path : NULL;
}

static GList *
attachment_tree_view_get_selected_paths (EAttachmentView *view)
{
    GtkTreeView *tree_view;
    GtkTreeSelection *selection;

    tree_view = GTK_TREE_VIEW (view);
    selection = gtk_tree_view_get_selection (tree_view);

    return gtk_tree_selection_get_selected_rows (selection, NULL);
}

static gboolean
attachment_tree_view_path_is_selected (EAttachmentView *view,
                                       GtkTreePath *path)
{
    GtkTreeView *tree_view;
    GtkTreeSelection *selection;

    tree_view = GTK_TREE_VIEW (view);
    selection = gtk_tree_view_get_selection (tree_view);

    return gtk_tree_selection_path_is_selected (selection, path);
}

static void
attachment_tree_view_select_path (EAttachmentView *view,
                                  GtkTreePath *path)
{
    GtkTreeView *tree_view;
    GtkTreeSelection *selection;

    tree_view = GTK_TREE_VIEW (view);
    selection = gtk_tree_view_get_selection (tree_view);

    gtk_tree_selection_select_path (selection, path);
}

static void
attachment_tree_view_unselect_path (EAttachmentView *view,
                                    GtkTreePath *path)
{
    GtkTreeView *tree_view;
    GtkTreeSelection *selection;

    tree_view = GTK_TREE_VIEW (view);
    selection = gtk_tree_view_get_selection (tree_view);

    gtk_tree_selection_unselect_path (selection, path);
}

static void
attachment_tree_view_select_all (EAttachmentView *view)
{
    GtkTreeView *tree_view;
    GtkTreeSelection *selection;

    tree_view = GTK_TREE_VIEW (view);
    selection = gtk_tree_view_get_selection (tree_view);

    gtk_tree_selection_select_all (selection);
}

static void
attachment_tree_view_unselect_all (EAttachmentView *view)
{
    GtkTreeView *tree_view;
    GtkTreeSelection *selection;

    tree_view = GTK_TREE_VIEW (view);
    selection = gtk_tree_view_get_selection (tree_view);

    gtk_tree_selection_unselect_all (selection);
}

static void
attachment_tree_view_drag_source_set (EAttachmentView *view,
                                      GdkModifierType start_button_mask,
                                      const GtkTargetEntry *targets,
                                      gint n_targets,
                                      GdkDragAction actions)
{
    GtkTreeView *tree_view;

    tree_view = GTK_TREE_VIEW (view);

    gtk_tree_view_enable_model_drag_source (
        tree_view, start_button_mask, targets, n_targets, actions);
}

static void
attachment_tree_view_drag_dest_set (EAttachmentView *view,
                                    const GtkTargetEntry *targets,
                                    gint n_targets,
                                    GdkDragAction actions)
{
    GtkTreeView *tree_view;

    tree_view = GTK_TREE_VIEW (view);

    gtk_tree_view_enable_model_drag_dest (
        tree_view, targets, n_targets, actions);
}

static void
attachment_tree_view_drag_source_unset (EAttachmentView *view)
{
    GtkTreeView *tree_view;

    tree_view = GTK_TREE_VIEW (view);

    gtk_tree_view_unset_rows_drag_source (tree_view);
}

static void
attachment_tree_view_drag_dest_unset (EAttachmentView *view)
{
    GtkTreeView *tree_view;

    tree_view = GTK_TREE_VIEW (view);

    gtk_tree_view_unset_rows_drag_dest (tree_view);
}

static void
e_attachment_tree_view_class_init (EAttachmentTreeViewClass *class)
{
    GObjectClass *object_class;
    GtkWidgetClass *widget_class;
    GtkTreeViewClass *tree_view_class;

    g_type_class_add_private (class, sizeof (EAttachmentViewPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = attachment_tree_view_set_property;
    object_class->get_property = attachment_tree_view_get_property;
    object_class->dispose = attachment_tree_view_dispose;
    object_class->finalize = attachment_tree_view_finalize;

    widget_class = GTK_WIDGET_CLASS (class);
    widget_class->button_press_event = attachment_tree_view_button_press_event;
    widget_class->button_release_event = attachment_tree_view_button_release_event;
    widget_class->motion_notify_event = attachment_tree_view_motion_notify_event;
    widget_class->key_press_event = attachment_tree_view_key_press_event;
    widget_class->drag_begin = attachment_tree_view_drag_begin;
    widget_class->drag_end = attachment_tree_view_drag_end;
    widget_class->drag_data_get = attachment_tree_view_drag_data_get;
    widget_class->drag_motion = attachment_tree_view_drag_motion;
    widget_class->drag_drop = attachment_tree_view_drag_drop;
    widget_class->drag_data_received = attachment_tree_view_drag_data_received;
    widget_class->popup_menu = attachment_tree_view_popup_menu;

    tree_view_class = GTK_TREE_VIEW_CLASS (class);
    tree_view_class->row_activated = attachment_tree_view_row_activated;

    g_object_class_override_property (
        object_class, PROP_DRAGGING, "dragging");

    g_object_class_override_property (
        object_class, PROP_EDITABLE, "editable");
}

static void
e_attachment_tree_view_init (EAttachmentTreeView *tree_view)
{
    GtkTreeSelection *selection;
    GtkTreeViewColumn *column;
    GtkCellRenderer *renderer;

    tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (
        tree_view, E_TYPE_ATTACHMENT_TREE_VIEW,
        EAttachmentTreeViewPrivate);

    e_attachment_view_init (E_ATTACHMENT_VIEW (tree_view));

    gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (tree_view), TRUE);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);

    /* Name Column */
    column = gtk_tree_view_column_new ();
    gtk_tree_view_column_set_expand (column, TRUE);
    gtk_tree_view_column_set_spacing (column, 3);
    gtk_tree_view_column_set_title (column, _("Description"));
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), column);

    renderer = gtk_cell_renderer_pixbuf_new ();
    gtk_tree_view_column_pack_start (column, renderer, FALSE);

    g_object_set (renderer, "stock-size", GTK_ICON_SIZE_MENU, NULL);

    gtk_tree_view_column_add_attribute (
        column, renderer, "gicon",
        E_ATTACHMENT_STORE_COLUMN_ICON);

    renderer = gtk_cell_renderer_text_new ();
    g_object_set (renderer, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
    gtk_tree_view_column_pack_start (column, renderer, TRUE);

    gtk_tree_view_column_add_attribute (
        column, renderer, "text",
        E_ATTACHMENT_STORE_COLUMN_DESCRIPTION);

    renderer = gtk_cell_renderer_progress_new ();
    g_object_set (renderer, "text", _("Loading"), NULL);
    gtk_tree_view_column_pack_start (column, renderer, TRUE);

    gtk_tree_view_column_add_attribute (
        column, renderer, "value",
        E_ATTACHMENT_STORE_COLUMN_PERCENT);

    gtk_tree_view_column_add_attribute (
        column, renderer, "visible",
        E_ATTACHMENT_STORE_COLUMN_LOADING);

    renderer = gtk_cell_renderer_progress_new ();
    g_object_set (renderer, "text", _("Saving"), NULL);
    gtk_tree_view_column_pack_start (column, renderer, TRUE);

    gtk_tree_view_column_add_attribute (
        column, renderer, "value",
        E_ATTACHMENT_STORE_COLUMN_PERCENT);

    gtk_tree_view_column_add_attribute (
        column, renderer, "visible",
        E_ATTACHMENT_STORE_COLUMN_SAVING);

    /* Size Column */
    column = gtk_tree_view_column_new ();
    gtk_tree_view_column_set_title (column, _("Size"));
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), column);

    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_column_pack_start (column, renderer, TRUE);

    gtk_tree_view_column_set_cell_data_func (
        column, renderer, (GtkTreeCellDataFunc)
        attachment_tree_view_render_size, NULL, NULL);

    /* Type Column */
    column = gtk_tree_view_column_new ();
    gtk_tree_view_column_set_title (column, _("Type"));
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), column);

    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_column_pack_start (column, renderer, TRUE);

    gtk_tree_view_column_add_attribute (
        column, renderer, "text",
        E_ATTACHMENT_STORE_COLUMN_CONTENT_TYPE);

    e_extensible_load_extensions (E_EXTENSIBLE (tree_view));
}

static void
e_attachment_tree_view_interface_init (EAttachmentViewInterface *interface)
{
    interface->get_private = attachment_tree_view_get_private;
    interface->get_store = attachment_tree_view_get_store;

    interface->get_path_at_pos = attachment_tree_view_get_path_at_pos;
    interface->get_selected_paths = attachment_tree_view_get_selected_paths;
    interface->path_is_selected = attachment_tree_view_path_is_selected;
    interface->select_path = attachment_tree_view_select_path;
    interface->unselect_path = attachment_tree_view_unselect_path;
    interface->select_all = attachment_tree_view_select_all;
    interface->unselect_all = attachment_tree_view_unselect_all;

    interface->drag_source_set = attachment_tree_view_drag_source_set;
    interface->drag_dest_set = attachment_tree_view_drag_dest_set;
    interface->drag_source_unset = attachment_tree_view_drag_source_unset;
    interface->drag_dest_unset = attachment_tree_view_drag_dest_unset;
}

GtkWidget *
e_attachment_tree_view_new (void)
{
    return g_object_new (E_TYPE_ATTACHMENT_TREE_VIEW, NULL);
}