LayerSelector: Add layer_selector_contains_elements() function
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@ -118,6 +118,18 @@ void layer_selector_auto_color_layers(LayerSelector *layer_selector, ColorPalett
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*/
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void layer_selector_auto_name_layers(LayerSelector *layer_selector, gboolean overwrite);
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/**
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* @brief Check if the given layer selector contains layer elements.
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*
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* This function checks whether there are elements present.
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* If an invalid object pointer \p layer_selector is passed,
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* the function returns FALSE
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*
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* @param[in] layer_selector Selector to check
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* @return True, if there is at least one layer present inside the selector
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*/
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gboolean layer_selector_contains_elements(LayerSelector *layer_selector);
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G_END_DECLS
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#endif /* __LAYER_SELECTOR_H__ */
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@ -883,4 +883,19 @@ void layer_selector_auto_name_layers(LayerSelector *layer_selector, gboolean ove
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g_list_free(le_list);
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}
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gboolean layer_selector_contains_elements(LayerSelector *layer_selector)
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{
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GList *layer_element_list;
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/* Check objects */
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g_return_val_if_fail(LAYER_IS_SELECTOR(layer_selector), FALSE);
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g_return_val_if_fail(GTK_IS_LIST_BOX(layer_selector->list_box), FALSE);
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/* Get a list of the child elements inside the list boy associated with this selector */
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layer_element_list = gtk_container_get_children(GTK_CONTAINER(layer_selector->list_box));
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/* Return TRUE if there is an element in the list, else return FALSE */
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return (layer_element_list ? TRUE : FALSE);
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}
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/** @} */
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