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list_store.rs
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// Copyright 2013-2016, The Gtk-rs Project Developers.
// See the COPYRIGHT file at the top-level directory of this distribution.
// Licensed under the MIT license, see the LICENSE file or <http://opensource.org/licenses/MIT>
use glib::object::{Cast, IsA};
use glib::translate::*;
use glib::{ToValue, Type, Value};
use gtk_sys;
use libc::c_int;
use std::ptr;
use ListStore;
use TreeIter;
use TreeModel;
impl ListStore {
pub fn new(column_types: &[Type]) -> ListStore {
assert_initialized_main_thread!();
unsafe {
let mut column_types = column_types.iter().map(|t| t.to_glib()).collect::<Vec<_>>();
from_glib_full(gtk_sys::gtk_list_store_newv(
column_types.len() as c_int,
column_types.as_mut_ptr(),
))
}
}
}
pub trait GtkListStoreExtManual: 'static {
fn insert_with_values(
&self,
position: Option<u32>,
columns: &[u32],
values: &[&dyn ToValue],
) -> TreeIter;
fn reorder(&self, new_order: &[u32]);
fn set(&self, iter: &TreeIter, columns: &[u32], values: &[&dyn ToValue]);
fn set_value(&self, iter: &TreeIter, column: u32, value: &Value);
}
impl<O: IsA<ListStore>> GtkListStoreExtManual for O {
fn insert_with_values(
&self,
position: Option<u32>,
columns: &[u32],
values: &[&dyn ToValue],
) -> TreeIter {
unsafe {
assert!(position.unwrap_or(0) <= i32::max_value() as u32);
assert_eq!(columns.len(), values.len());
let n_columns = gtk_sys::gtk_tree_model_get_n_columns(
self.as_ref().upcast_ref::<TreeModel>().to_glib_none().0,
) as u32;
assert!(columns.len() <= n_columns as usize);
for (&column, value) in columns.iter().zip(values.iter()) {
assert!(column < n_columns);
let type_ = from_glib(gtk_sys::gtk_tree_model_get_column_type(
self.as_ref().upcast_ref::<TreeModel>().to_glib_none().0,
column as c_int,
));
assert!(Value::type_transformable(value.to_value_type(), type_));
}
let mut iter = TreeIter::uninitialized();
gtk_sys::gtk_list_store_insert_with_valuesv(
self.as_ref().to_glib_none().0,
iter.to_glib_none_mut().0,
position.map_or(-1, |n| n as c_int),
mut_override(columns.as_ptr() as *const c_int),
values.to_glib_none().0,
columns.len() as c_int,
);
iter
}
}
fn reorder(&self, new_order: &[u32]) {
unsafe {
let count = gtk_sys::gtk_tree_model_iter_n_children(
self.as_ref().upcast_ref::<TreeModel>().to_glib_none().0,
ptr::null_mut(),
);
let safe_count = count as usize == new_order.len();
debug_assert!(
safe_count,
"Incorrect `new_order` slice length. Expected `{}`, found `{}`.",
count,
new_order.len()
);
let safe_values = new_order.iter().max().map_or(true, |&max| {
let max = max as i32;
max >= 0 && max < count
});
debug_assert!(
safe_values,
"Some `new_order` slice values are out of range. Maximum safe value: \
`{}`. The slice contents: `{:?}`",
count - 1,
new_order
);
if safe_count && safe_values {
gtk_sys::gtk_list_store_reorder(
self.as_ref().to_glib_none().0,
mut_override(new_order.as_ptr() as *const c_int),
);
}
}
}
fn set(&self, iter: &TreeIter, columns: &[u32], values: &[&dyn ToValue]) {
unsafe {
assert_eq!(columns.len(), values.len());
let n_columns = gtk_sys::gtk_tree_model_get_n_columns(
self.as_ref().upcast_ref::<TreeModel>().to_glib_none().0,
) as u32;
assert!(columns.len() <= n_columns as usize);
for (&column, value) in columns.iter().zip(values.iter()) {
assert!(column < n_columns);
let type_ = from_glib(gtk_sys::gtk_tree_model_get_column_type(
self.as_ref().upcast_ref::<TreeModel>().to_glib_none().0,
column as c_int,
));
assert!(Value::type_transformable(value.to_value_type(), type_));
}
gtk_sys::gtk_list_store_set_valuesv(
self.as_ref().to_glib_none().0,
mut_override(iter.to_glib_none().0),
mut_override(columns.as_ptr() as *const c_int),
values.to_glib_none().0,
columns.len() as c_int,
);
}
}
fn set_value(&self, iter: &TreeIter, column: u32, value: &Value) {
unsafe {
let columns = gtk_sys::gtk_tree_model_get_n_columns(
self.as_ref().upcast_ref::<TreeModel>().to_glib_none().0,
);
assert!(column < columns as u32);
let type_ = from_glib(gtk_sys::gtk_tree_model_get_column_type(
self.as_ref().upcast_ref::<TreeModel>().to_glib_none().0,
column as c_int,
));
assert!(Value::type_transformable(value.type_(), type_));
gtk_sys::gtk_list_store_set_value(
self.as_ref().to_glib_none().0,
mut_override(iter.to_glib_none().0),
column as c_int,
mut_override(value.to_glib_none().0),
);
}
}
}