+++ /dev/null
-/* Copyright (c) 2007, Nokia Corporation
- * All rights reserved.
- *
- */
-
-#include "modest-validating-entry.h"
-#include <gtk/gtksignal.h> /* For the gtk_signal_stop_emit_by_name() convenience function. */
-#include <string.h> /* For strlen(). */
-
-/* Include config.h so that _() works: */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-G_DEFINE_TYPE (EasysetupValidatingEntry, easysetup_validating_entry, GTK_TYPE_ENTRY);
-
-#define VALIDATING_ENTRY_GET_PRIVATE(o) \
- (G_TYPE_INSTANCE_GET_PRIVATE ((o), EASYSETUP_TYPE_VALIDATING_ENTRY, EasysetupValidatingEntryPrivate))
-
-typedef struct _EasysetupValidatingEntryPrivate EasysetupValidatingEntryPrivate;
-
-struct _EasysetupValidatingEntryPrivate
-{
- /* A list of gunichar, rather than char*,
- * because gunichar is easier to deal with internally,
- * but gchar* is easier to supply from the external interface.
- */
- GList *list_prevent;
-
- gboolean prevent_whitespace;
-};
-
-static void
-easysetup_validating_entry_get_property (GObject *object, guint property_id,
- GValue *value, GParamSpec *pspec)
-{
- switch (property_id) {
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
- }
-}
-
-static void
-easysetup_validating_entry_set_property (GObject *object, guint property_id,
- const GValue *value, GParamSpec *pspec)
-{
- switch (property_id) {
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
- }
-}
-
-static void
-easysetup_validating_entry_dispose (GObject *object)
-{
- if (G_OBJECT_CLASS (easysetup_validating_entry_parent_class)->dispose)
- G_OBJECT_CLASS (easysetup_validating_entry_parent_class)->dispose (object);
-}
-
-static void
-easysetup_validating_entry_finalize (GObject *object)
-{
- EasysetupValidatingEntryPrivate *priv = VALIDATING_ENTRY_GET_PRIVATE (object);
-
- /* Free the list and its items: */
- if (priv->list_prevent) {
- g_list_foreach (priv->list_prevent, (GFunc)&g_free, NULL);
- g_list_free (priv->list_prevent);
- }
-
- G_OBJECT_CLASS (easysetup_validating_entry_parent_class)->finalize (object);
-}
-
-static void
-easysetup_validating_entry_class_init (EasysetupValidatingEntryClass *klass)
-{
- GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
- g_type_class_add_private (klass, sizeof (EasysetupValidatingEntryPrivate));
-
- object_class->get_property = easysetup_validating_entry_get_property;
- object_class->set_property = easysetup_validating_entry_set_property;
- object_class->dispose = easysetup_validating_entry_dispose;
- object_class->finalize = easysetup_validating_entry_finalize;
-}
-
-static gint
-on_list_compare(gconstpointer a, gconstpointer b)
-{
- gunichar* unichar_a = (gunichar*)(a);
- gunichar* unichar_b = (gunichar*)(b);
- if(*unichar_a == *unichar_b)
- return 0;
- else
- return -1; /* Really, we should return > and <, but we don't use this for sorting. */
-}
-
-static void
-on_insert_text(GtkEditable *editable,
- gchar *new_text, gint new_text_length,
- gint *position,
- gpointer user_data)
-{
- EasysetupValidatingEntry *self = EASYSETUP_VALIDATING_ENTRY (user_data);
- EasysetupValidatingEntryPrivate *priv = VALIDATING_ENTRY_GET_PRIVATE (self);
-
- if(!new_text_length)
- return;
-
- /* Note: new_text_length is documented as the number of bytes, not characters. */
- if(!g_utf8_validate (new_text, new_text_length, NULL))
- return;
-
- /* Look at each UTF-8 character in the text (it could be several via a drop or a paste),
- * and check them */
- gboolean allow = TRUE;
- gchar *iter = new_text; /* new_text seems to be NULL-terminated, though that is not documented. */
- while (iter)
- {
- if(priv->list_prevent) {
- /* If the character is in our prevent list,
- * then do not allow this text to be entered.
- *
- * This prevents entry of all text, without removing the unwanted characters.
- * It is debatable whether that is the best thing to do.
- */
- gunichar one_char = g_utf8_get_char (iter);
- GList *found = g_list_find_custom(priv->list_prevent, &one_char, &on_list_compare);
- if(found) {
- allow = FALSE;
- break;
- }
- }
-
- if(priv->prevent_whitespace) {
- /* Check for whitespace characters: */
- gunichar one_char = g_utf8_get_char (iter);
- if (g_unichar_isspace (one_char)) {
- allow = FALSE;
- break;
- }
- }
-
- /* Crashes. Don't know why: iter = g_utf8_next_char (iter);
- * Maybe it doesn't check for null-termination. */
- iter = g_utf8_find_next_char (iter, new_text + new_text_length);
- }
-
- if(!allow) {
- /* The signal documentation says
- * "by connecting to this signal and then stopping the signal with
- * gtk_signal_emit_stop(), it is possible to modify the inserted text,
- * or prevent it from being inserted entirely."
- */
- gtk_signal_emit_stop_by_name (GTK_OBJECT (self), "insert-text");
- }
-}
-
-static void
-easysetup_validating_entry_init (EasysetupValidatingEntry *self)
-{
- /* Connect to the GtkEditable::insert-text signal
- * so we can filter out some characters:
- * We connect _before_ so we can stop the default signal handler from running.
- */
- g_signal_connect (G_OBJECT (self), "insert-text", (GCallback)&on_insert_text, self);
-}
-
-EasysetupValidatingEntry*
-easysetup_validating_entry_new (void)
-{
- return g_object_new (EASYSETUP_TYPE_VALIDATING_ENTRY, NULL);
-}
-
-/** Specify characters that may not be entered into this GtkEntry.
- *
- * list: A list of gchar* strings. Each one identifies a UTF-8 character.
- */
-void easysetup_validating_entry_set_unallowed_characters (EasysetupValidatingEntry *self, GList *list)
-{
- EasysetupValidatingEntryPrivate *priv = VALIDATING_ENTRY_GET_PRIVATE (self);
-
- /* Free the list and its items: */
- if (priv->list_prevent) {
- g_list_foreach (priv->list_prevent, (GFunc)&g_free, NULL);
- g_list_free (priv->list_prevent);
- }
-
- /* Do a deep copy of the list, converting gchar* to gunichar: */
- priv->list_prevent = NULL;
- GList *iter = NULL;
- for (iter = list; iter != NULL; iter = iter->next) {
- gunichar *one_char = g_new0 (gunichar, 1);
- if(iter->data)
- *one_char = g_utf8_get_char ((gchar*)iter->data);
- else
- *one_char = 0;
-
- priv->list_prevent = g_list_append (priv->list_prevent, one_char);
- }
-}
-
-/** Specify that no whitespace characters may be entered into this GtkEntry.
- *
- */
-void easysetup_validating_entry_set_unallowed_characters_whitespace (EasysetupValidatingEntry *self)
-{
- EasysetupValidatingEntryPrivate *priv = VALIDATING_ENTRY_GET_PRIVATE (self);
- priv->prevent_whitespace = TRUE;
-}
projects / modest / blobdiff