diff options
Diffstat (limited to 'src/location/gconfitem.cpp')
| -rw-r--r-- | src/location/gconfitem.cpp | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/src/location/gconfitem.cpp b/src/location/gconfitem.cpp new file mode 100644 index 00000000..cb9d938a --- /dev/null +++ b/src/location/gconfitem.cpp @@ -0,0 +1,364 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QString> +#include <QStringList> +#include <QByteArray> +#include <QVariant> +#include <QtDebug> + +#include "gconfitem_p.h" + +#include <glib.h> +#include <gconf/gconf-value.h> +#include <gconf/gconf-client.h> + +struct GConfItemPrivate { + QString key; + QVariant value; + guint notify_id; + + static void notify_trampoline(GConfClient*, guint, GConfEntry *, gpointer); +}; + +#define withClient(c) for(GConfClient *c = (g_type_init(), gconf_client_get_default()); c; g_object_unref(c), c=NULL) + +static QByteArray convertKey(QString key) +{ + if (key.startsWith('/')) + return key.toUtf8(); + else { + qWarning() << "Using dot-separated key names with GConfItem is deprecated."; + qWarning() << "Please use" << '/' + key.replace('.', '/') << "instead of" << key; + return '/' + key.replace('.', '/').toUtf8(); + } +} + +static QString convertKey(const char *key) +{ + return QString::fromUtf8(key); +} + +static QVariant convertValue(GConfValue *src) +{ + if (!src) { + return QVariant(); + } else { + switch (src->type) { + case GCONF_VALUE_INVALID: + return QVariant(QVariant::Invalid); + case GCONF_VALUE_BOOL: + return QVariant((bool)gconf_value_get_bool(src)); + case GCONF_VALUE_INT: + return QVariant(gconf_value_get_int(src)); + case GCONF_VALUE_FLOAT: + return QVariant(gconf_value_get_float(src)); + case GCONF_VALUE_STRING: + return QVariant(QString::fromUtf8(gconf_value_get_string(src))); + case GCONF_VALUE_LIST: + switch (gconf_value_get_list_type(src)) { + case GCONF_VALUE_STRING: { + QStringList result; + for (GSList *elts = gconf_value_get_list(src); elts; elts = elts->next) + result.append(QString::fromUtf8(gconf_value_get_string((GConfValue *)elts->data))); + return QVariant(result); + } + default: { + QList<QVariant> result; + for (GSList *elts = gconf_value_get_list(src); elts; elts = elts->next) + result.append(convertValue((GConfValue *)elts->data)); + return QVariant(result); + } + } + case GCONF_VALUE_SCHEMA: + default: + return QVariant(); + } + } +} + +static GConfValue *convertString(const QString &str) +{ + GConfValue *v = gconf_value_new(GCONF_VALUE_STRING); + gconf_value_set_string(v, str.toUtf8().data()); + return v; +} + +static GConfValueType primitiveType(const QVariant &elt) +{ + switch (elt.type()) { + case QVariant::String: + return GCONF_VALUE_STRING; + case QVariant::Int: + return GCONF_VALUE_INT; + case QVariant::Double: + return GCONF_VALUE_FLOAT; + case QVariant::Bool: + return GCONF_VALUE_BOOL; + default: + return GCONF_VALUE_INVALID; + } +} + +static GConfValueType uniformType(const QList<QVariant> &list) +{ + GConfValueType result = GCONF_VALUE_INVALID; + + foreach(const QVariant &elt, list) { + GConfValueType elt_type = primitiveType(elt); + + if (elt_type == GCONF_VALUE_INVALID) + return GCONF_VALUE_INVALID; + + if (result == GCONF_VALUE_INVALID) + result = elt_type; + else if (result != elt_type) + return GCONF_VALUE_INVALID; + } + + if (result == GCONF_VALUE_INVALID) + return GCONF_VALUE_STRING; // empty list. + else + return result; +} + +static int convertValue(const QVariant &src, GConfValue **valp) +{ + GConfValue *v; + + switch (src.type()) { + case QVariant::Invalid: + v = NULL; + break; + case QVariant::Bool: + v = gconf_value_new(GCONF_VALUE_BOOL); + gconf_value_set_bool(v, src.toBool()); + break; + case QVariant::Int: + v = gconf_value_new(GCONF_VALUE_INT); + gconf_value_set_int(v, src.toInt()); + break; + case QVariant::Double: + v = gconf_value_new(GCONF_VALUE_FLOAT); + gconf_value_set_float(v, src.toDouble()); + break; + case QVariant::String: + v = convertString(src.toString()); + break; + case QVariant::StringList: { + GSList *elts = NULL; + v = gconf_value_new(GCONF_VALUE_LIST); + gconf_value_set_list_type(v, GCONF_VALUE_STRING); + foreach(const QString &str, src.toStringList()) + elts = g_slist_prepend(elts, convertString(str)); + gconf_value_set_list_nocopy(v, g_slist_reverse(elts)); + break; + } + case QVariant::List: { + GConfValueType elt_type = uniformType(src.toList()); + if (elt_type == GCONF_VALUE_INVALID) + v = NULL; + else { + GSList *elts = NULL; + v = gconf_value_new(GCONF_VALUE_LIST); + gconf_value_set_list_type(v, elt_type); + foreach(const QVariant &elt, src.toList()) { + GConfValue *val = NULL; + convertValue(elt, &val); // guaranteed to succeed. + elts = g_slist_prepend(elts, val); + } + gconf_value_set_list_nocopy(v, g_slist_reverse(elts)); + } + break; + } + default: + return 0; + } + + *valp = v; + return 1; +} + +void GConfItemPrivate::notify_trampoline(GConfClient*, + guint, + GConfEntry *, + gpointer data) +{ + GConfItem *item = (GConfItem *)data; + item->update_value(true); +} + +void GConfItem::update_value(bool emit_signal) +{ + QVariant new_value; + + withClient(client) { + GError *error = NULL; + QByteArray k = convertKey(priv->key); + GConfValue *v = gconf_client_get(client, k.data(), &error); + + if (error) { + qWarning() << error->message; + g_error_free(error); + new_value = priv->value; + } else { + new_value = convertValue(v); + if (v) + gconf_value_free(v); + } + } + + if (new_value != priv->value) { + priv->value = new_value; + if (emit_signal) + emit valueChanged(); + } +} + +QString GConfItem::key() const +{ + return priv->key; +} + +QVariant GConfItem::value() const +{ + return priv->value; +} + +QVariant GConfItem::value(const QVariant &def) const +{ + if (priv->value.isNull()) + return def; + else + return priv->value; +} + +void GConfItem::set(const QVariant &val) +{ + withClient(client) { + QByteArray k = convertKey(priv->key); + GConfValue *v; + if (convertValue(val, &v)) { + GError *error = NULL; + + if (v) { + gconf_client_set(client, k.data(), v, &error); + gconf_value_free(v); + } else { + gconf_client_unset(client, k.data(), &error); + } + + if (error) { + qWarning() << error->message; + g_error_free(error); + } else if (priv->value != val) { + priv->value = val; + emit valueChanged(); + } + + } else + qWarning() << "Can't store a" << val.typeName(); + } +} + +void GConfItem::unset() +{ + set(QVariant()); +} + +QList<QString> GConfItem::listDirs() const +{ + QList<QString> children; + + withClient(client) { + QByteArray k = convertKey(priv->key); + GSList *dirs = gconf_client_all_dirs(client, k.data(), NULL); + for (GSList *d = dirs; d; d = d->next) { + children.append(convertKey((char *)d->data)); + g_free(d->data); + } + g_slist_free(dirs); + } + + return children; +} + +QList<QString> GConfItem::listEntries() const +{ + QList<QString> children; + + withClient(client) { + QByteArray k = convertKey(priv->key); + GSList *entries = gconf_client_all_entries(client, k.data(), NULL); + for (GSList *e = entries; e; e = e->next) { + children.append(convertKey(((GConfEntry *)e->data)->key)); + gconf_entry_free((GConfEntry *)e->data); + } + g_slist_free(entries); + } + + return children; +} + +GConfItem::GConfItem(const QString &key, QObject *parent) + : QObject(parent) +{ + priv = new GConfItemPrivate; + priv->key = key; + withClient(client) { + update_value(false); + QByteArray k = convertKey(priv->key); + gconf_client_add_dir(client, k.data(), GCONF_CLIENT_PRELOAD_ONELEVEL, NULL); + priv->notify_id = gconf_client_notify_add(client, k.data(), + GConfItemPrivate::notify_trampoline, this, + NULL, NULL); + } +} + +GConfItem::~GConfItem() +{ + withClient(client) { + QByteArray k = convertKey(priv->key); + gconf_client_notify_remove(client, priv->notify_id); + gconf_client_remove_dir(client, k.data(), NULL); + } + delete priv; +} |