diff options
Diffstat (limited to 'tui/newt/nmt-newt-entry-numeric.c')
| -rw-r--r-- | tui/newt/nmt-newt-entry-numeric.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/tui/newt/nmt-newt-entry-numeric.c b/tui/newt/nmt-newt-entry-numeric.c new file mode 100644 index 00000000..753c209a --- /dev/null +++ b/tui/newt/nmt-newt-entry-numeric.c @@ -0,0 +1,213 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ +/* + * This program 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 of the + * License, or (at your option) any later version. + * + * 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 + * 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/>. + * + * Copyright 2013 Red Hat, Inc. + */ + +/** + * SECTION:nmt-newt-entry-numeric + * @short_description: Numeric text entry + * + * #NmtNewtEntryNumeric implements a numeric-only #NmtNewtEntry. + * + * #NmtNewtEntryNumeric provides its own #NmtNewtEntryFilter and + * #NmtNewtEntryValidator functions, so you should not set your own. + */ + +#include "config.h" + +#include <stdlib.h> + +#include "nmt-newt-entry-numeric.h" + +G_DEFINE_TYPE (NmtNewtEntryNumeric, nmt_newt_entry_numeric, NMT_TYPE_NEWT_ENTRY) + +#define NMT_NEWT_ENTRY_NUMERIC_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NMT_TYPE_NEWT_ENTRY_NUMERIC, NmtNewtEntryNumericPrivate)) + +typedef struct { + int min, max; +} NmtNewtEntryNumericPrivate; + +enum { + PROP_0, + PROP_MINIMUM, + PROP_MAXIMUM, + + LAST_PROP +}; + +/** + * nmt_newt_entry_numeric_new: + * @width: the entry's width in characters + * @min: the minimum valid value + * @max: the maximum valid value + * + * Creates a new #NmtNewtEntryNumeric, accepting values in the + * indicated range. + * + * Returns: a new #NmtNewtEntryNumeric + */ +NmtNewtWidget * +nmt_newt_entry_numeric_new (int width, + int min, + int max) +{ + return g_object_new (NMT_TYPE_NEWT_ENTRY_NUMERIC, + "width", width, + "minimum", min, + "maximum", max, + NULL); +} + +static gboolean +newt_entry_numeric_filter (NmtNewtEntry *entry, + const char *text, + int ch, + int position, + gpointer user_data) +{ + NmtNewtEntryNumericPrivate *priv = NMT_NEWT_ENTRY_NUMERIC_GET_PRIVATE (entry); + + if (g_ascii_isdigit (ch)) + return TRUE; + + if (ch == '-' && position == 0 && priv->min < 0) + return TRUE; + + return FALSE; +} + +static gboolean +newt_entry_numeric_validate (NmtNewtEntry *entry, + const char *text, + gpointer user_data) +{ + NmtNewtEntryNumericPrivate *priv = NMT_NEWT_ENTRY_NUMERIC_GET_PRIVATE (entry); + int val; + char *end; + + if (!*text) + return FALSE; + + val = strtoul (text, &end, 10); + if (*end) + return FALSE; + if (val < priv->min || val > priv->max) + return FALSE; + + return TRUE; +} + +static void +nmt_newt_entry_numeric_init (NmtNewtEntryNumeric *entry) +{ + nmt_newt_entry_set_filter (NMT_NEWT_ENTRY (entry), newt_entry_numeric_filter, NULL); + nmt_newt_entry_set_validator (NMT_NEWT_ENTRY (entry), newt_entry_numeric_validate, NULL); +} + +static void +nmt_newt_entry_numeric_constructed (GObject *object) +{ + NmtNewtEntryNumericPrivate *priv = NMT_NEWT_ENTRY_NUMERIC_GET_PRIVATE (object); + + if (!*nmt_newt_entry_get_text (NMT_NEWT_ENTRY (object))) { + char buf[32]; + + g_snprintf (buf, sizeof (buf), "%d", priv->min); + nmt_newt_entry_set_text (NMT_NEWT_ENTRY (object), buf); + } + + G_OBJECT_CLASS (nmt_newt_entry_numeric_parent_class)->constructed (object); +} + +static void +nmt_newt_entry_numeric_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + NmtNewtEntryNumericPrivate *priv = NMT_NEWT_ENTRY_NUMERIC_GET_PRIVATE (object); + + switch (prop_id) { + case PROP_MINIMUM: + priv->min = g_value_get_int (value); + break; + case PROP_MAXIMUM: + priv->max = g_value_get_int (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +nmt_newt_entry_numeric_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + NmtNewtEntryNumericPrivate *priv = NMT_NEWT_ENTRY_NUMERIC_GET_PRIVATE (object); + + switch (prop_id) { + case PROP_MINIMUM: + g_value_set_int (value, priv->min); + break; + case PROP_MAXIMUM: + g_value_set_int (value, priv->max); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +nmt_newt_entry_numeric_class_init (NmtNewtEntryNumericClass *entry_class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (entry_class); + + g_type_class_add_private (entry_class, sizeof (NmtNewtEntryNumericPrivate)); + + /* virtual methods */ + object_class->constructed = nmt_newt_entry_numeric_constructed; + object_class->set_property = nmt_newt_entry_numeric_set_property; + object_class->get_property = nmt_newt_entry_numeric_get_property; + + /** + * NmtNewtEntryNumeric:minimum: + * + * The minimum #NmtNewtWidget:valid value for the entry. If this + * is non-negative, then the entry will not allow negative numbers + * to be entered. + */ + g_object_class_install_property (object_class, PROP_MINIMUM, + g_param_spec_int ("minimum", "", "", + G_MININT, G_MAXINT, 0, + G_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY | + G_PARAM_STATIC_STRINGS)); + /** + * NmtNewtEntryNumeric:maximum: + * + * The maximum #NmtNewtWidget:valid value for the entry. + */ + g_object_class_install_property (object_class, PROP_MAXIMUM, + g_param_spec_int ("maximum", "", "", + G_MININT, G_MAXINT, G_MAXINT, + G_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY | + G_PARAM_STATIC_STRINGS)); +} |