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/*
This file is part of GNUnet
(C) 2011, 2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your
option) any later version.
GNUnet 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file src/fs/gnunet-fs-gtk_main-window-namespace-dropdown.c
* @author LRN
* @brief event handlers for the namespace selection dropdown box in the main window
*/
#include "gnunet-fs-gtk_common.h"
#include "gnunet-fs-gtk.h"
/**
* How long until we automatically hide the drop-down if the cursor is outside the bounds?
*/
#define AUTO_HIDE_TIMEOUT_MS 100
/**
* ID of a timeout task which we schedule to close the drop-down automatically
* if the mouse leaves the area for a while. 0 for no such task.
*
* FIXME: this task is not cancelled if the main window is closed while
* the drop-down is down.
*/
static guint namespace_selector_window_leave_timeout_source;
/**
* The mouse has re-entered the dropdown window. Stop the
* timeout task that would hide the dropdown.
*
* @param widget the dropdown widget
* @param event the mouse-enter event
* @param user_data the builder for the main window
*/
gboolean
GNUNET_FS_GTK_search_namespace_dropdown_button_enter_notify_event_cb (GtkWidget *widget,
GdkEvent *event,
gpointer user_data)
{
if (namespace_selector_window_leave_timeout_source > 0)
g_source_remove (namespace_selector_window_leave_timeout_source);
namespace_selector_window_leave_timeout_source = 0;
return FALSE;
}
/**
* Run when the timeout has expired. Hides the drop down window.
*
* @param user_data the toggle button which we will use to hide the dropdown
* @return FALSE
*/
static gboolean
namespace_selector_window_leave_timeout_cb (gpointer user_data)
{
GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (user_data);
/* This will eventually hide the namespace selector */
namespace_selector_window_leave_timeout_source = 0;
gtk_toggle_button_set_active (toggle_button, FALSE);
return FALSE;
}
/**
* The cursor has left the window. Place a timeout to hide the
* window. It will be cancelled if the cursor re-enters the namespace
* selector window or the toggle button within 100ms
*
* @param user_data the builder for the main window
*/
gboolean
GNUNET_FS_GTK_search_namespace_selector_window_leave_notify_event_cb (GtkWidget * widget,
GdkEvent * event,
gpointer user_data)
{
GtkBuilder *builder = GTK_BUILDER (user_data);
GtkToggleButton *toggle_button;
toggle_button =
GTK_TOGGLE_BUTTON (gtk_builder_get_object
(builder,
"main_window_search_namespace_dropdown_button"));
if (namespace_selector_window_leave_timeout_source > 0)
g_source_remove (namespace_selector_window_leave_timeout_source);
namespace_selector_window_leave_timeout_source
= g_timeout_add (AUTO_HIDE_TIMEOUT_MS,
&namespace_selector_window_leave_timeout_cb,
toggle_button);
return FALSE;
}
/**
* Given a tree view, find out which row is currently selected.
*
* @param tree a tree view instance
* @return a reference to the currently selected row, or NULL for none
*/
static GtkTreeRowReference *
get_selected_row_from_treeview (GtkTreeView * tree)
{
GtkTreeSelection *sel;
GtkTreeModel *model;
GtkTreePath *path;
GtkTreeIter iter;
GtkTreeRowReference *ref;
sel = gtk_tree_view_get_selection (tree);
if (! gtk_tree_selection_get_selected (sel, &model, &iter))
return NULL;
path = gtk_tree_model_get_path (model, &iter);
ref = gtk_tree_row_reference_new (model, path);
gtk_tree_path_free (path);
return ref;
}
/**
* Changes were made to the selected entry in the tree view and the
* user clicked to confirm. Hide the drop down and display the
* selected entry as the new namespace label.
*
* @param builder the builder for the main window
* @param tv the tree view that was updated
*/
static void
commit_changes (GtkBuilder *builder,
GtkTreeView *tv)
{
GtkToggleButton *toggle_button;
GtkTreeRowReference *ref;
GtkTreePath *treepath;
gchar *value;
toggle_button =
GTK_TOGGLE_BUTTON (gtk_builder_get_object
(builder,
"main_window_search_namespace_dropdown_button"));
ref = g_object_get_data (G_OBJECT (toggle_button), "selected-row-reference");
if (NULL != ref)
gtk_tree_row_reference_free (ref);
ref = get_selected_row_from_treeview (tv);
g_object_set_data (G_OBJECT (toggle_button), "selected-row-reference", ref);
treepath = gtk_tree_row_reference_get_path (ref);
if (GNUNET_GTK_get_tree_string (tv, treepath, 0, &value))
{
GtkLabel *sel_namespace_label;
sel_namespace_label =
GTK_LABEL (gtk_builder_get_object
(builder, "main_window_search_selected_namespace_label"));
gtk_label_set_text (sel_namespace_label, (NULL != value) ? value : "");
g_free (value);
}
if (GNUNET_GTK_get_tree_string (tv, treepath, 2, &value))
{
GtkEntry *search_entry;
search_entry = GTK_ENTRY (gtk_builder_get_object (builder, "main_window_search_entry"));
gtk_entry_set_text (search_entry, (NULL != value) ? value : "");
g_free (value);
}
gtk_tree_path_free (treepath);
/* hide the namespace selector */
gtk_toggle_button_set_active (toggle_button, FALSE);
}
/**
* User pushed the button in the treeview. Get the selected entry
* and remember it in the "pushed-rowreference" of the widget.
* This way, we can use it when the button is released.
*
* @param widget the tree view widget
* @param event the push event
* @param user_data the builder for the main window
* @return FALSE
*/
gboolean
GNUNET_FS_GTK_namespace_selector_treeview_button_press_event_cb (GtkWidget * widget,
GdkEvent * event,
gpointer user_data)
{
GtkTreeRowReference *ref;
gpointer old = g_object_get_data (G_OBJECT (widget), "pushed-rowreference");
if (NULL != old)
gtk_tree_row_reference_free (old);
ref = get_selected_row_from_treeview (GTK_TREE_VIEW (widget));
g_object_set_data (G_OBJECT (widget), "pushed-rowreference", ref);
return FALSE;
}
/**
* User released the button in the treeview. Get the selected entry
* and update the cursor accordingly, but only if the user pushed the
* button down and released it in the same row. We have stored the
* row that the user selected when pushing the button down in the
* "pushed-rowreference" of the widget.
*
* @param widget the tree view widget
* @param event the release event
* @param user_data the builder for the main window
* @return FALSE
*/
gboolean
GNUNET_FS_GTK_namespace_selector_treeview_button_release_event_cb (GtkWidget * widget,
GdkEvent * event,
gpointer user_data)
{
GtkBuilder *builder = GTK_BUILDER (user_data);
GtkTreeRowReference *ref;
gpointer old = g_object_get_data (G_OBJECT (widget), "pushed-rowreference");
ref = get_selected_row_from_treeview (GTK_TREE_VIEW (widget));
if ( (NULL != ref) && (NULL != old))
{
GtkTreePath *path_ref;
GtkTreePath *path_old;
path_ref = gtk_tree_row_reference_get_path (ref);
path_old = gtk_tree_row_reference_get_path (old);
if (0 == gtk_tree_path_compare (path_ref, path_old))
commit_changes (builder, GTK_TREE_VIEW (widget));
if (path_ref)
gtk_tree_path_free (path_ref);
if (path_old)
gtk_tree_path_free (path_old);
}
if (NULL != ref)
gtk_tree_row_reference_free (ref);
if (NULL != old)
gtk_tree_row_reference_free (old);
g_object_set_data (G_OBJECT (widget), "pushed-rowreference", NULL);
return FALSE;
}
/**
* The toggle button that changes the visibility of the namespace dropdown
* list was toggled.
*
* @param togglebutton the button that toggles the namespace dropdown list
* @param user_data the builder for the main window
*/
void
GNUNET_FS_GTK_search_namespace_dropdown_button_toggled_cb (GtkToggleButton *
togglebutton,
gpointer user_data)
{
GtkBuilder *builder = GTK_BUILDER (user_data);
gboolean active;
GtkWidget *namespace_selector_window;
GtkWidget *namespace_selector_treeview;
GtkAllocation togglebutton_allocation;
GdkWindow *main_window_gdk;
gint mwg_x;
gint mwg_y;
gint tgb_x;
gint tgb_y;
gint popup_x;
gint popup_y;
namespace_selector_window =
GTK_WIDGET (gtk_builder_get_object
(builder, "namespace_selector_window"));
g_object_get (G_OBJECT (togglebutton), "active", &active, NULL);
if (! active)
{
gtk_widget_hide (namespace_selector_window);
gtk_widget_grab_focus (GTK_WIDGET (togglebutton));
return;
}
namespace_selector_treeview =
GTK_WIDGET (gtk_builder_get_object
(builder, "namespace_selector_treeview"));
gtk_widget_get_allocation (GTK_WIDGET (togglebutton),
&togglebutton_allocation);
main_window_gdk = gtk_widget_get_window (GTK_WIDGET (togglebutton));
gdk_window_get_origin (main_window_gdk, &mwg_x, &mwg_y);
/* show the window below the button */
tgb_x = mwg_x + togglebutton_allocation.x;
tgb_y = mwg_y + togglebutton_allocation.y;
popup_x = tgb_x;
popup_y = tgb_y + togglebutton_allocation.height;
gtk_window_move (GTK_WINDOW (namespace_selector_window), popup_x, popup_y);
gtk_widget_show_all (namespace_selector_window);
gtk_widget_grab_focus (namespace_selector_treeview);
}
/**
* Add pseudonym data to tree store
*
* @param cls closure (the 'GtkListStore')
* @param pseudonym hash code of public key of pseudonym
* @param md meta data known about the pseudonym
* @param rating the local rating of the pseudonym
* @return GNUNET_OK to continue iteration, GNUNET_SYSERR to abort
*/
static int
add_namespace_to_ts (void *cls, const GNUNET_HashCode * pseudonym,
const struct GNUNET_CONTAINER_MetaData *md, int rating)
{
GtkTreeStore *ts = cls;
char *root;
char *ns_name;
GNUNET_HashCode *nsid;
char *description;
char *uris;
char *emsg;
struct GNUNET_FS_Uri *uri;
GtkTreeIter iter;
ns_name =
GNUNET_PSEUDONYM_id_to_name (GNUNET_FS_GTK_get_configuration (),
pseudonym);
nsid = GNUNET_malloc (sizeof (GNUNET_HashCode));
*nsid = *pseudonym;
root = NULL;
uris = GNUNET_CONTAINER_meta_data_get_by_type (md, EXTRACTOR_METATYPE_URI);
if (uris != NULL)
{
emsg = NULL;
uri = GNUNET_FS_uri_parse (uris, &emsg);
if (uri == NULL)
GNUNET_free (emsg);
root = GNUNET_FS_uri_sks_get_content_id (uri);
GNUNET_FS_uri_destroy (uri);
}
description =
GNUNET_CONTAINER_meta_data_get_first_by_types (md,
EXTRACTOR_METATYPE_TITLE,
EXTRACTOR_METATYPE_BOOK_TITLE,
EXTRACTOR_METATYPE_DESCRIPTION,
EXTRACTOR_METATYPE_SUMMARY,
EXTRACTOR_METATYPE_ALBUM,
EXTRACTOR_METATYPE_COMMENT,
EXTRACTOR_METATYPE_SUBJECT,
EXTRACTOR_METATYPE_KEYWORDS,
-1);
if (description == NULL)
description = g_strdup (_("no description supplied"));
else
{
char *utf8_desc = NULL;
utf8_desc =
GNUNET_FS_GTK_dubious_meta_to_utf8 (EXTRACTOR_METAFORMAT_UTF8,
description, strlen (description));
GNUNET_free (description);
if (utf8_desc != NULL)
description = utf8_desc;
else
description = NULL;
}
gtk_tree_store_insert_with_values (ts, &iter, NULL, G_MAXINT,
0, ns_name,
1, nsid,
2, root,
3, description,
-1);
GNUNET_free (ns_name);
GNUNET_free_non_null (root);
GNUNET_free_non_null (description);
return GNUNET_OK;
}
/**
* Startup hook to initialize the namespace dropdown widget.
*
* @param widget the main window
* @param user_data the builder for the main window
*/
/* FIXME-STYLE: hang up on 'realize' event of a widget closer to home? */
void
GNUNET_GTK_main_window_realize_cb (GtkWidget * widget, gpointer user_data)
{
GtkBuilder *builder = GTK_BUILDER (user_data);
GtkTreeIter iter;
GtkTreeStore *namespace_treestore;
/* FIXME: can't we do the button initialization when we create the main window? */
/* Make sure button class is realized */
g_type_class_unref (g_type_class_ref (GTK_TYPE_BUTTON));
/* GNUnet main window assumes that images on buttons are visible,
* override the theme's gtkrc setting
*/
g_object_set (gtk_settings_get_default (), "gtk-button-images", TRUE, NULL);
/* setup namespace treestore */
{
namespace_treestore =
GTK_TREE_STORE (GNUNET_FS_GTK_get_main_window_object
("main_window_search_namespace_treestore"));
/* FIXME: find a way to manage pseudonyms.
* Right now the list will be filled with ALL and ANY pseudonyms that we
* find, these are held as files in a special directory.
* I don't see an easy way to ignore certain pseudonyms in that directory,
* and that require for pseudonym management. Also, pseudonyms are presented
* in arbitrary order. We must either sort them (by name?) or let the user
* drag them around to change the order in which they appear in the list.
* All that is not possible with a simple "files in a directory" concept.
*/
gtk_tree_store_insert_with_values (namespace_treestore, &iter, NULL, G_MAXINT,
0, "Any", 1, NULL, 2, "", 3,
"Do not search in any particular namespace",
-1);
/* FIXME-BUG: when do we unregister? */
GNUNET_PSEUDONYM_discovery_callback_register (GNUNET_FS_GTK_get_configuration (),
&add_namespace_to_ts,
namespace_treestore);
}
/* select the first item and update the label */
/* FIXME-STYLE: is this even necessary? If the first item is "Any", we can
just have the label have the right default, or not? */
if (gtk_tree_model_get_iter_first
(GTK_TREE_MODEL (namespace_treestore), &iter))
{
gchar *value;
GtkLabel *sel_namespace_label;
GtkTreePath *treepath = gtk_tree_path_new_first ();
GtkTreeView *namespace_tree;
namespace_tree =
GTK_TREE_VIEW (GNUNET_FS_GTK_get_main_window_object
("namespace_selector_treeview"));
gtk_tree_selection_select_iter (gtk_tree_view_get_selection
(namespace_tree), &iter);
sel_namespace_label =
GTK_LABEL (gtk_builder_get_object
(builder, "main_window_search_selected_namespace_label"));
if (GNUNET_GTK_get_tree_string (namespace_tree, treepath, 0, &value))
gtk_label_set_text (sel_namespace_label, value);
gtk_tree_path_free (treepath);
}
/* show the window (to trigger certain events) and immediately hide it */
/* FIXME: yuck, can't we trigger these events by other means? */
{
GtkWidget *namespace_selector_window;
namespace_selector_window =
GTK_WIDGET (gtk_builder_get_object
(builder, "namespace_selector_window"));
gtk_widget_show (namespace_selector_window);
gtk_widget_hide (namespace_selector_window);
}
}
/* end of gnunet-fs-gtk_main-window-namespace-dropdown.c */
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