Implement widget_service_get_widget_max_count APIsubmit/tizen/20160809.011327

Change-Id: I3fb54922e6e9b8a731d672dfce2d24d475fb9d9b
Signed-off-by: Hwankyu Jhun <h.jhun@samsung.com>

7 files changed, 90 insertions, 6 deletions

diff --git a/include/widget_errno.h b/include/widget_errno.h
index 367406f..d5756e5 100644
--- a/include/widget_errno.h
+++ b/include/widget_errno.h
@@ -60,6 +60,7 @@ typedef enum widget_error
 	WIDGET_ERROR_ALREADY_STARTED = TIZEN_ERROR_WIDGET | 0x0004, /**< Operation is already started */
 	WIDGET_ERROR_NOT_EXIST = TIZEN_ERROR_WIDGET | 0x0008, /**< Not exists */
 	WIDGET_ERROR_DISABLED = TIZEN_ERROR_WIDGET | 0x0010,  /**< Disabled */
+	WIDGET_ERROR_MAX_EXCEED = TIZEN_ERROR_WIDGET | 0x0011,  /* *< Max instance exceed */
 } widget_error_e;
 
 /**
diff --git a/include/widget_service_internal.h b/include/widget_service_internal.h
index 1047f05..ceca86c 100644
--- a/include/widget_service_internal.h
+++ b/include/widget_service_internal.h
@@ -741,11 +741,13 @@ extern int widget_service_destroy_widget_list(widget_list_h handle);
  * @param[in] widget_id widget application id
  * @privlevel public
  * @privlege %http://tizen.org/privilege/widget.viewer
- * @return count positive value on success, otherwise a negative error value
+ * @return count non-negative value on success, otherwise a negative error value
  * @retval #WIDGET_ERROR_INVALID_PARAMETER Invalid parameter
  * @retval #WIDGET_ERROR_IO_ERROR Input/Output error (failed to access database)
  * @retval #WIDGET_ERROR_FAULT Unrecorvarable error occurred
  * @retval #WIDGET_ERROR_NOT_SUPPORTED Widget feature is not supported
+ * @retval #WIDGET_ERROR_PERMISSION_DENIED Permission denied
+ * @retval #WIDGET_ERROR_NOT_EXIST Not exists
  */
 extern int widget_service_get_widget_max_count(const char *widget_id);
 
diff --git a/parser/widget.sql b/parser/widget.sql
index c1d9134..fd105db 100644
--- a/parser/widget.sql
+++ b/parser/widget.sql
@@ -11,6 +11,7 @@ CREATE TABLE widget_class (
   appid         TEXT NOT NULL,
   pkgid         TEXT NOT NULL,
   nodisplay     INTEGER DEFAULT 0,
+  max_instance  INTEGER DEFAULT 0,
   PRIMARY KEY(classid)
 );
 
diff --git a/parser/widget_plugin_parser.c b/parser/widget_plugin_parser.c
index 710ee33..e5c025d 100644
--- a/parser/widget_plugin_parser.c
+++ b/parser/widget_plugin_parser.c
@@ -128,10 +128,9 @@ static int _parse_support_size(xmlNode *node, GList **sizes)
 
 	size->preview = _get_attribute(node, "preview");
 	val = _get_attribute(node, "frame");
-	if (val && !strcasecmp(val, "true")) {
+	if (val && !strcasecmp(val, "true"))
 		size->frame = true;
-		free(val);
-	}
+	free(val);
 
 	*sizes = g_list_append(*sizes, size);
 
@@ -204,6 +203,11 @@ static int _parse_widget_class(xmlNode *node, const char *appid, GList **apps)
 
 	wc->setup_appid = _get_attribute(node, "setup-appid");
 
+	val = _get_attribute(node, "max-instance");
+	if (val)
+		wc->max_instance = atoi(val);
+	free(val);
+
 	for (tmp = node->children; tmp; tmp = tmp->next) {
 		switch (_get_tag(tmp)) {
 		case TAG_SUPPORT_SIZE:
@@ -256,15 +260,22 @@ static int _parse_widget_application(xmlNode *node, GList **list)
 	val = _get_attribute(node, "update-period");
 	if (val)
 		wc->update_period = atoi(val);
+	free(val);
 
 	val = _get_attribute(node, "nodisplay");
 	if (val && strncmp(val, "true", strlen("true")) == 0)
 		wc->nodisplay = 1;
 	else
 		wc->nodisplay = 0;
+	free(val);
 
 	wc->setup_appid = _get_attribute(node, "setup-appid");
 
+	val = _get_attribute(node, "max-instance");
+	if (val)
+		wc->max_instance = atoi(val);
+	free(val);
+
 	for (tmp = node->children; tmp; tmp = tmp->next) {
 		switch (_get_tag(tmp)) {
 		case TAG_SUPPORT_SIZE:
diff --git a/parser/widget_plugin_parser_db.c b/parser/widget_plugin_parser_db.c
index d3e84ac..2173b64 100644
--- a/parser/widget_plugin_parser_db.c
+++ b/parser/widget_plugin_parser_db.c
@@ -223,8 +223,8 @@ static int _insert_widget_class(sqlite3 *db, const char *pkgid, GList *wcs)
 	int ret;
 	static const char query[] =
 		"INSERT INTO widget_class (classid, update_period, "
-		"setup_appid, appid, pkgid, nodisplay) "
-		"VALUES (?, ?, ?, ?, ?, ?)";
+		"setup_appid, appid, pkgid, nodisplay, max_instance) "
+		"VALUES (?, ?, ?, ?, ?, ?, ?)";
 	GList *tmp;
 	struct widget_class *wc;
 	sqlite3_stmt *stmt = NULL;
@@ -245,6 +245,7 @@ static int _insert_widget_class(sqlite3 *db, const char *pkgid, GList *wcs)
 		_bind_text(stmt, idx++, wc->appid);
 		_bind_text(stmt, idx++, pkgid);
 		sqlite3_bind_int(stmt, idx++, wc->nodisplay);
+		sqlite3_bind_int(stmt, idx++, wc->max_instance);
 
 		ret = sqlite3_step(stmt);
 		if (ret != SQLITE_DONE) {
diff --git a/parser/widget_plugin_parser_internal.h b/parser/widget_plugin_parser_internal.h
index 44f0fdb..bf14b59 100644
--- a/parser/widget_plugin_parser_internal.h
+++ b/parser/widget_plugin_parser_internal.h
@@ -39,6 +39,7 @@ struct widget_class {
 	int update_period;
 	char *setup_appid;
 	char *appid;
+	int max_instance;
 	int nodisplay;
 	GList *support_size;
 	GList *label;
diff --git a/src/widget_service.c b/src/widget_service.c
index fda056b..3f29147 100644
--- a/src/widget_service.c
+++ b/src/widget_service.c
@@ -38,6 +38,7 @@
 #include "widget_conf.h"
 #include "widget_instance.h"
 #include "widget_service.h"
+#include "widget_service_internal.h"
 
 #define MAX_BUF_SIZE 4096
 #define SMACK_LABEL_LEN 255
@@ -1597,3 +1598,69 @@ EAPI int widget_service_unset_lifecycle_event_cb(const char *widget_id, void **u
 	return WIDGET_ERROR_NOT_EXIST;
 }
 
+static int __get_max_instance(const char *widget_id, uid_t uid)
+{
+	static const char query[] =
+		"SELECT max_instance FROM widget_class WHERE classid=?";
+	int ret;
+	sqlite3 *db;
+	sqlite3_stmt *stmt;
+	int max_instance = 0;
+
+	db = _open_db(uid);
+	if (db == NULL)
+		return WIDGET_ERROR_IO_ERROR;
+
+	ret = sqlite3_prepare_v2(db, query, strlen(query), &stmt, NULL);
+	if (ret != SQLITE_OK) {
+		_E("prepare error: %s", sqlite3_errmsg(db));
+		sqlite3_close_v2(db);
+		return WIDGET_ERROR_FAULT;
+	}
+
+	sqlite3_bind_text(stmt, 1, widget_id, -1, SQLITE_STATIC);
+
+	ret = sqlite3_step(stmt);
+	if (ret != SQLITE_ROW) {
+		_E("step error: %s", sqlite3_errmsg(db));
+		sqlite3_finalize(stmt);
+		sqlite3_close_v2(db);
+		if (ret == SQLITE_DONE)
+			return WIDGET_ERROR_NOT_EXIST;
+
+		return WIDGET_ERROR_FAULT;
+	}
+
+	_get_column_int(stmt, 0, &max_instance);
+	_D("widget_id: %s, max-instance: %d", widget_id, max_instance);
+
+	sqlite3_finalize(stmt);
+	sqlite3_close_v2(db);
+
+	return max_instance;
+}
+
+EAPI int widget_service_get_widget_max_count(const char *widget_id)
+{
+	int ret;
+
+	if (!_is_widget_feature_enabled()) {
+		_E("Not supported");
+		return WIDGET_ERROR_NOT_SUPPORTED;
+	}
+
+	if (widget_id == NULL) {
+		_E("Invalid parameter");
+		return WIDGET_ERROR_INVALID_PARAMETER;
+	}
+
+	if (check_privilege("http://tizen.org/privilege/widget.viewer") < 0)
+		return WIDGET_ERROR_PERMISSION_DENIED;
+
+	ret = __get_max_instance(widget_id, getuid());
+	if (ret == WIDGET_ERROR_NOT_EXIST)
+		ret = __get_max_instance(widget_id, GLOBALAPP_USER);
+
+	return ret;
+}
+