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Diffstat (limited to 'src/timezone-completion.c')
| -rw-r--r-- | src/timezone-completion.c | 696 |
1 files changed, 0 insertions, 696 deletions
diff --git a/src/timezone-completion.c b/src/timezone-completion.c deleted file mode 100644 index a4d4fb5..0000000 --- a/src/timezone-completion.c +++ /dev/null @@ -1,696 +0,0 @@ -/* -*- Mode: C; coding: utf-8; indent-tabs-mode: nil; tab-width: 2 -*- - -Copyright 2011 Canonical Ltd. - -Authors: - Michael Terry <michael.terry@canonical.com> - -This program is free software: you can redistribute it and/or modify it -under the terms of the GNU General Public License version 3, as published -by the Free Software Foundation. - -This program is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranties of -MERCHANTABILITY, SATISFACTORY QUALITY, 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 this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <json-glib/json-glib.h> -#include <gdk/gdk.h> -#include <gdk/gdkkeysyms.h> -#include <glib/gi18n.h> -#include "timezone-completion.h" -#include "tz.h" - -enum { - LAST_SIGNAL -}; - -/* static guint signals[LAST_SIGNAL] = { }; */ - -struct _TimezoneCompletionPrivate -{ - GtkTreeModel * initial_model; - GtkEntry * entry; - guint queued_request; - guint changed_id; - guint keypress_id; - GCancellable * cancel; - gchar * request_text; - GHashTable * request_table; -}; - -#define GEONAME_URL "http://geoname-lookup.ubuntu.com/?query=%s&release=%s&lang=%s" - -/* Prototypes */ -static void timezone_completion_class_init (TimezoneCompletionClass *klass); -static void timezone_completion_init (TimezoneCompletion *self); -static void timezone_completion_dispose (GObject *object); -static void timezone_completion_finalize (GObject *object); - -G_DEFINE_TYPE (TimezoneCompletion, timezone_completion, GTK_TYPE_ENTRY_COMPLETION); - -static gboolean -match_func (GtkEntryCompletion *completion, const gchar *key, - GtkTreeIter *iter, gpointer user_data) -{ - // geonames does the work for us - return TRUE; -} - -static void -save_and_use_model (TimezoneCompletion * completion, GtkTreeModel * model) -{ - TimezoneCompletionPrivate * priv = completion->priv; - - g_hash_table_insert (priv->request_table, g_strdup (priv->request_text), g_object_ref_sink (model)); - - if (model == priv->initial_model) - gtk_entry_completion_set_match_func (GTK_ENTRY_COMPLETION (completion), NULL, NULL, NULL); - else - gtk_entry_completion_set_match_func (GTK_ENTRY_COMPLETION (completion), match_func, NULL, NULL); - - gtk_entry_completion_set_model (GTK_ENTRY_COMPLETION (completion), model); - - if (priv->entry != NULL) { - gtk_entry_completion_complete (GTK_ENTRY_COMPLETION (completion)); - - /* By this time, the changed signal has come and gone. We didn't give a - model to use, so no popup appeared for user. Poke the entry again to show - popup in 300ms. */ - g_signal_emit_by_name (priv->entry, "changed"); - } -} - -static gint -sort_zone (GtkTreeModel *model, GtkTreeIter *a, GtkTreeIter *b, - gpointer user_data) -{ - /* Anything that has text as a prefix goes first, in mostly sorted order. - Then everything else goes after, in mostly sorted order. */ - const gchar *casefolded_text = (const gchar *)user_data; - - const gchar *namea = NULL, *nameb = NULL; - gtk_tree_model_get (model, a, TIMEZONE_COMPLETION_NAME, &namea, -1); - gtk_tree_model_get (model, b, TIMEZONE_COMPLETION_NAME, &nameb, -1); - - gchar *casefolded_namea = NULL, *casefolded_nameb = NULL; - casefolded_namea = g_utf8_casefold (namea, -1); - casefolded_nameb = g_utf8_casefold (nameb, -1); - - gboolean amatches = FALSE, bmatches = FALSE; - amatches = strncmp (casefolded_text, casefolded_namea, strlen(casefolded_text)) == 0; - bmatches = strncmp (casefolded_text, casefolded_nameb, strlen(casefolded_text)) == 0; - - gint rv; - if (amatches && !bmatches) - rv = -1; - else if (bmatches && !amatches) - rv = 1; - else - rv = g_utf8_collate (casefolded_namea, casefolded_nameb); - - g_free (casefolded_namea); - g_free (casefolded_nameb); - return rv; -} - -static void -json_parse_ready (GObject *object, GAsyncResult *res, gpointer user_data) -{ - TimezoneCompletion * completion = TIMEZONE_COMPLETION (user_data); - TimezoneCompletionPrivate * priv = completion->priv; - GError * error = NULL; - const gchar * prev_name = NULL; - const gchar * prev_admin1 = NULL; - const gchar * prev_country = NULL; - - json_parser_load_from_stream_finish (JSON_PARSER (object), res, &error); - - if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED) && priv->cancel) { - g_cancellable_reset (priv->cancel); - } - - if (error != NULL) { - if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) - save_and_use_model (completion, priv->initial_model); - g_warning ("Could not parse geoname JSON data: %s", error->message); - g_error_free (error); - return; - } - - GtkListStore * store = gtk_list_store_new (TIMEZONE_COMPLETION_LAST, - G_TYPE_STRING, - G_TYPE_STRING, - G_TYPE_STRING, - G_TYPE_STRING, - G_TYPE_STRING, - G_TYPE_STRING); - - JsonReader * reader = json_reader_new (json_parser_get_root (JSON_PARSER (object))); - - if (!json_reader_is_array (reader)) { - g_warning ("Could not parse geoname JSON data"); - save_and_use_model (completion, priv->initial_model); - g_object_unref (G_OBJECT (reader)); - return; - } - - gint i, count = json_reader_count_elements (reader); - for (i = 0; i < count; ++i) { - if (!json_reader_read_element (reader, i)) - continue; - - if (json_reader_is_object (reader)) { - const gchar * name = NULL; - const gchar * admin1 = NULL; - const gchar * country = NULL; - const gchar * longitude = NULL; - const gchar * latitude = NULL; - gboolean skip = FALSE; - if (json_reader_read_member (reader, "name")) { - name = json_reader_get_string_value (reader); - json_reader_end_member (reader); - } - if (json_reader_read_member (reader, "admin1")) { - admin1 = json_reader_get_string_value (reader); - json_reader_end_member (reader); - } - if (json_reader_read_member (reader, "country")) { - country = json_reader_get_string_value (reader); - json_reader_end_member (reader); - } - if (json_reader_read_member (reader, "longitude")) { - longitude = json_reader_get_string_value (reader); - json_reader_end_member (reader); - } - if (json_reader_read_member (reader, "latitude")) { - latitude = json_reader_get_string_value (reader); - json_reader_end_member (reader); - } - - if (g_strcmp0(name, prev_name) == 0 && - g_strcmp0(admin1, prev_admin1) == 0 && - g_strcmp0(country, prev_country) == 0) { - // Sometimes the data will have duplicate entries that only differ - // in longitude and latitude. e.g. "rio de janeiro", "wellington" - skip = TRUE; - } - - if (!skip) { - GtkTreeIter iter; - gtk_list_store_append (store, &iter); - gtk_list_store_set (store, &iter, - TIMEZONE_COMPLETION_ZONE, NULL, - TIMEZONE_COMPLETION_NAME, name, - TIMEZONE_COMPLETION_ADMIN1, admin1, - TIMEZONE_COMPLETION_COUNTRY, country, - TIMEZONE_COMPLETION_LONGITUDE, longitude, - TIMEZONE_COMPLETION_LATITUDE, latitude, - -1); - gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (store), - TIMEZONE_COMPLETION_NAME, sort_zone, - g_utf8_casefold(priv->request_text, -1), - g_free); - gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store), - TIMEZONE_COMPLETION_NAME, - GTK_SORT_ASCENDING); - } - - prev_name = name; - prev_admin1 = admin1; - prev_country = country; - } - - json_reader_end_element (reader); - } - - if (strlen (priv->request_text) < 4) { - gchar * lower_text = g_ascii_strdown (priv->request_text, -1); - if (g_strcmp0 (lower_text, "ut") == 0 || - g_strcmp0 (lower_text, "utc") == 0) { - GtkTreeIter iter; - gtk_list_store_append (store, &iter); - gtk_list_store_set (store, &iter, - TIMEZONE_COMPLETION_ZONE, "UTC", - TIMEZONE_COMPLETION_NAME, "UTC", - -1); - } - g_free (lower_text); - } - - save_and_use_model (completion, GTK_TREE_MODEL (store)); - g_object_unref (G_OBJECT (reader)); -} - -static void -geonames_data_ready (GObject *object, GAsyncResult *res, gpointer user_data) -{ - TimezoneCompletion * completion = TIMEZONE_COMPLETION (user_data); - TimezoneCompletionPrivate * priv = completion->priv; - GError * error = NULL; - GFileInputStream * stream; - - stream = g_file_read_finish (G_FILE (object), res, &error); - - if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED) && priv->cancel) { - g_cancellable_reset (priv->cancel); - } - - if (error != NULL) { - if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) - save_and_use_model (completion, priv->initial_model); - g_warning ("Could not connect to geoname lookup server: %s", error->message); - g_error_free (error); - return; - } - - JsonParser * parser = json_parser_new (); - json_parser_load_from_stream_async (parser, G_INPUT_STREAM (stream), priv->cancel, - json_parse_ready, user_data); -} - -/* Returns message locale, with possible country info too like en_US */ -static gchar * -get_locale (void) -{ - /* Check LANGUAGE, LC_ALL, LC_MESSAGES, and LANG, treat as colon-separated */ - const gchar *env_names[] = {"LANGUAGE", "LC_ALL", "LC_MESSAGES", "LANG", NULL}; - const gchar *env = NULL; - gint i; - - for (i = 0; env_names[i]; i++) { - env = g_getenv (env_names[i]); - if (env != NULL && env[0] != 0) - break; - } - - if (env == NULL) - return NULL; - - /* Now, we split on colons as expected, but also on . and @ to filter out - extra pieces of locale we don't care about as we only use first chunk. */ - gchar **split = g_strsplit_set (env, ":.@", 2); - if (split == NULL) - return NULL; - - if (split[0] == NULL) { - g_strfreev (split); - return NULL; - } - - gchar *locale = g_strdup (split[0]); - g_strfreev (split); - return locale; -} - -static const gchar * -get_version (void) -{ - static gchar *version = NULL; - - if (version == NULL) { - gchar *stdout = NULL; - g_spawn_command_line_sync ("lsb_release -rs", &stdout, NULL, NULL, NULL); - - if (stdout != NULL) - version = g_strstrip (stdout); - else - version = g_strdup(""); - } - - return version; -} - -static gboolean -request_zones (TimezoneCompletion * completion) -{ - TimezoneCompletionPrivate * priv = completion->priv; - - priv->queued_request = 0; - - if (priv->entry == NULL) { - return FALSE; - } - - /* Cancel any ongoing request */ - if (priv->cancel) { - g_cancellable_cancel (priv->cancel); - g_cancellable_reset (priv->cancel); - } - g_free (priv->request_text); - - const gchar * text = gtk_entry_get_text (priv->entry); - priv->request_text = g_strdup (text); - - gchar * escaped = g_uri_escape_string (text, NULL, FALSE); - const gchar * version = get_version (); - gchar * locale = get_locale (); - gchar * url = g_strdup_printf (GEONAME_URL, escaped, version, locale); - g_free (locale); - g_free (escaped); - - GFile * file = g_file_new_for_uri (url); - g_free (url); - - g_file_read_async (file, G_PRIORITY_DEFAULT, priv->cancel, - geonames_data_ready, completion); - - return FALSE; -} - -static void -entry_changed (GtkEntry * entry, TimezoneCompletion * completion) -{ - TimezoneCompletionPrivate * priv = completion->priv; - - if (priv->queued_request) { - g_source_remove (priv->queued_request); - priv->queued_request = 0; - } - - /* See if we've already got this one */ - const gchar * text = gtk_entry_get_text (priv->entry); - gpointer data; - if (g_hash_table_lookup_extended (priv->request_table, text, NULL, &data)) { - gtk_entry_completion_set_model (GTK_ENTRY_COMPLETION (completion), GTK_TREE_MODEL (data)); - } - else { - priv->queued_request = g_timeout_add (300, (GSourceFunc)request_zones, completion); - gtk_entry_completion_set_model (GTK_ENTRY_COMPLETION (completion), NULL); - } - gtk_entry_completion_complete (GTK_ENTRY_COMPLETION (completion)); -} - -static GtkWidget * -get_descendent (GtkWidget * parent, GType type) -{ - if (g_type_is_a (G_OBJECT_TYPE (parent), type)) - return parent; - - if (GTK_IS_CONTAINER (parent)) { - GList * children = gtk_container_get_children (GTK_CONTAINER (parent)); - GList * iter; - for (iter = children; iter; iter = iter->next) { - GtkWidget * found = get_descendent (GTK_WIDGET (iter->data), type); - if (found) { - g_list_free (children); - return found; - } - } - g_list_free (children); - } - - return NULL; -} - -/** - * The popup window and its GtkTreeView are private to our parent completion - * object. We can't get access to discover if there is a highlighted item or - * even if the window is showing right now. So this is a super hack to find - * it by looking through our toplevel's window group and finding a window with - * a GtkTreeView that points at our model. There should be only one ever, so - * we'll use the first one we find. - */ -static GtkTreeView * -find_popup_treeview (GtkWidget * widget, GtkTreeModel * model) -{ - GtkWidget * toplevel = gtk_widget_get_toplevel (widget); - if (!GTK_IS_WINDOW (toplevel)) - return NULL; - - GtkWindowGroup * group = gtk_window_get_group (GTK_WINDOW (toplevel)); - GList * windows = gtk_window_group_list_windows (group); - GList * iter; - for (iter = windows; iter; iter = iter->next) { - if (iter->data == toplevel) - continue; // Skip our own window, we don't have it - GtkWidget * view = get_descendent (GTK_WIDGET (iter->data), GTK_TYPE_TREE_VIEW); - if (view != NULL) { - GtkTreeModel * tree_model = gtk_tree_view_get_model (GTK_TREE_VIEW (view)); - if (GTK_IS_TREE_MODEL_FILTER (tree_model)) - tree_model = gtk_tree_model_filter_get_model (GTK_TREE_MODEL_FILTER (tree_model)); - if (tree_model == model) { - g_list_free (windows); - return GTK_TREE_VIEW (view); - } - } - } - g_list_free (windows); - - return NULL; -} - -static gboolean -entry_keypress (GtkEntry * entry, GdkEventKey *event, TimezoneCompletion * completion) -{ - if (event->keyval == GDK_KEY_ISO_Enter || - event->keyval == GDK_KEY_KP_Enter || - event->keyval == GDK_KEY_Return) { - /* Make sure that user has a selection to choose, otherwise ignore */ - GtkTreeModel * model = gtk_entry_completion_get_model (GTK_ENTRY_COMPLETION (completion)); - GtkTreeView * view = find_popup_treeview (GTK_WIDGET (entry), model); - if (view == NULL) { - // Just beep if popup hasn't appeared yet. - gtk_widget_error_bell (GTK_WIDGET (entry)); - return TRUE; - } - - GtkTreeSelection * sel = gtk_tree_view_get_selection (view); - GtkTreeModel * sel_model = NULL; - if (!gtk_tree_selection_get_selected (sel, &sel_model, NULL)) { - // No selection, we should help them out and select first item in list - GtkTreeIter iter; - if (gtk_tree_model_get_iter_first (sel_model, &iter)) - gtk_tree_selection_select_iter (sel, &iter); - // And fall through to normal handler code - } - } - - return FALSE; -} - -void -timezone_completion_watch_entry (TimezoneCompletion * completion, GtkEntry * entry) -{ - TimezoneCompletionPrivate * priv = completion->priv; - - if (priv->queued_request) { - g_source_remove (priv->queued_request); - priv->queued_request = 0; - } - if (priv->entry) { - g_signal_handler_disconnect (priv->entry, priv->changed_id); - priv->changed_id = 0; - g_signal_handler_disconnect (priv->entry, priv->keypress_id); - priv->keypress_id = 0; - g_object_remove_weak_pointer (G_OBJECT (priv->entry), (gpointer *)&priv->entry); - gtk_entry_set_completion (priv->entry, NULL); - } - - priv->entry = entry; - - if (entry) { - guint id = g_signal_connect (entry, "changed", G_CALLBACK (entry_changed), completion); - priv->changed_id = id; - - id = g_signal_connect (entry, "key-press-event", G_CALLBACK (entry_keypress), completion); - priv->keypress_id = id; - - g_object_add_weak_pointer (G_OBJECT (entry), (gpointer *)&priv->entry); - - gtk_entry_set_completion (entry, GTK_ENTRY_COMPLETION (completion)); - } -} - -static GtkListStore * -get_initial_model (void) -{ - TzDB * db = tz_load_db (); - GPtrArray * locations = tz_get_locations (db); - - GtkListStore * store = gtk_list_store_new (TIMEZONE_COMPLETION_LAST, - G_TYPE_STRING, - G_TYPE_STRING, - G_TYPE_STRING, - G_TYPE_STRING, - G_TYPE_STRING, - G_TYPE_STRING); - - gint i; - for (i = 0; i < locations->len; ++i) { - TzLocation * loc = g_ptr_array_index (locations, i); - GtkTreeIter iter; - gtk_list_store_append (store, &iter); - - /* FIXME: need something better than below for non-English locales */ - const gchar * last_bit = ((const gchar *)strrchr (loc->zone, '/')) + 1; - if (last_bit == NULL) - last_bit = loc->zone; - gchar * name = g_strdup (last_bit); - gchar * underscore; - while ((underscore = strchr (name, '_'))) { - *underscore = ' '; - } - - gtk_list_store_set (store, &iter, - TIMEZONE_COMPLETION_ZONE, loc->zone, - TIMEZONE_COMPLETION_NAME, name, - TIMEZONE_COMPLETION_COUNTRY, loc->country, - -1); - - g_free (name); - } - - GtkTreeIter iter; - gtk_list_store_append (store, &iter); - gtk_list_store_set (store, &iter, - TIMEZONE_COMPLETION_ZONE, "UTC", - TIMEZONE_COMPLETION_NAME, "UTC", - -1); - - tz_db_free (db); - return store; -} - -static void -data_func (GtkCellLayout *cell_layout, GtkCellRenderer *cell, - GtkTreeModel *tree_model, GtkTreeIter *iter, gpointer user_data) -{ - const gchar * name, * admin1, * country; - - gtk_tree_model_get (GTK_TREE_MODEL (tree_model), iter, - TIMEZONE_COMPLETION_NAME, &name, - TIMEZONE_COMPLETION_ADMIN1, &admin1, - TIMEZONE_COMPLETION_COUNTRY, &country, - -1); - - gchar * user_name; - if (country == NULL || country[0] == 0) { - user_name = g_strdup (name); - } else if (admin1 == NULL || admin1[0] == 0) { - user_name = g_strdup_printf ("%s <small>(%s)</small>", name, country); - } else { - user_name = g_strdup_printf ("%s <small>(%s, %s)</small>", name, admin1, country); - } - - g_object_set (G_OBJECT (cell), "markup", user_name, NULL); -} - -static void -timezone_completion_class_init (TimezoneCompletionClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - - g_type_class_add_private (klass, sizeof (TimezoneCompletionPrivate)); - - object_class->dispose = timezone_completion_dispose; - object_class->finalize = timezone_completion_finalize; - - return; -} - -static void -timezone_completion_init (TimezoneCompletion * self) -{ - TimezoneCompletionPrivate *priv; - - self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, - TIMEZONE_COMPLETION_TYPE, - TimezoneCompletionPrivate); - priv = self->priv; - - priv->initial_model = GTK_TREE_MODEL (get_initial_model ()); - - g_object_set (G_OBJECT (self), - "text-column", TIMEZONE_COMPLETION_NAME, - "popup-set-width", FALSE, - NULL); - - priv->cancel = g_cancellable_new (); - - priv->request_table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref); - - GtkCellRenderer * cell = gtk_cell_renderer_text_new (); - gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (self), cell, TRUE); - gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (self), cell, data_func, NULL, NULL); - - return; -} - -static void -timezone_completion_dispose (GObject * object) -{ - G_OBJECT_CLASS (timezone_completion_parent_class)->dispose (object); - - TimezoneCompletion * completion = TIMEZONE_COMPLETION (object); - TimezoneCompletionPrivate * priv = completion->priv; - - if (priv->changed_id) { - if (priv->entry) - g_signal_handler_disconnect (priv->entry, priv->changed_id); - priv->changed_id = 0; - } - - if (priv->keypress_id) { - if (priv->entry) - g_signal_handler_disconnect (priv->entry, priv->keypress_id); - priv->keypress_id = 0; - } - - if (priv->entry != NULL) { - gtk_entry_set_completion (priv->entry, NULL); - g_object_remove_weak_pointer (G_OBJECT (priv->entry), (gpointer *)&priv->entry); - priv->entry = NULL; - } - - if (priv->initial_model != NULL) { - g_object_unref (G_OBJECT (priv->initial_model)); - priv->initial_model = NULL; - } - - if (priv->queued_request) { - g_source_remove (priv->queued_request); - priv->queued_request = 0; - } - - if (priv->cancel != NULL) { - g_cancellable_cancel (priv->cancel); - g_object_unref (priv->cancel); - priv->cancel = NULL; - } - - if (priv->request_text != NULL) { - g_free (priv->request_text); - priv->request_text = NULL; - } - - if (priv->request_table != NULL) { - g_hash_table_destroy (priv->request_table); - priv->request_table = NULL; - } - - return; -} - -static void -timezone_completion_finalize (GObject * object) -{ - G_OBJECT_CLASS (timezone_completion_parent_class)->finalize (object); - return; -} - -TimezoneCompletion * -timezone_completion_new () -{ - TimezoneCompletion * self = g_object_new (TIMEZONE_COMPLETION_TYPE, NULL); - return self; -} - |