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treeview_d.rs
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treeview_d.rs
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/*!
An application that show how to use the TreeView control.
Requires the following features: `cargo run --example treeview_d --features "tree-view tree-view-iterator listbox image-list frame"`
*/
extern crate native_windows_gui as nwg;
extern crate native_windows_derive as nwd;
use nwd::NwgUi;
use nwg::NativeUi;
#[derive(Default, NwgUi)]
pub struct TreeViewApp {
#[nwg_control(size: (600, 350), position: (300, 300), title: "TreeView - Musteloidea")]
#[nwg_events( OnWindowClose: [TreeViewApp::exit], OnInit: [TreeViewApp::load_data] )]
window: nwg::Window,
#[nwg_resource(initial: 5, size: (16, 16))]
view_icons: nwg::ImageList,
#[nwg_layout(parent: window)]
layout: nwg::GridLayout,
#[nwg_control(focus: true)]
#[nwg_layout_item(layout: layout, col: 0, col_span: 3, row: 0, row_span: 6)]
#[nwg_events(
OnTreeViewClick: [TreeViewApp::log_events(SELF, EVT)],
OnTreeViewDoubleClick: [TreeViewApp::log_events(SELF, EVT)],
OnTreeViewRightClick: [TreeViewApp::log_events(SELF, EVT)],
OnTreeFocusLost: [TreeViewApp::log_events(SELF, EVT)],
OnTreeFocus: [TreeViewApp::log_events(SELF, EVT)],
OnTreeItemDelete: [TreeViewApp::log_events(SELF, EVT)],
OnTreeItemExpanded: [TreeViewApp::log_events(SELF, EVT)],
OnTreeItemChanged: [TreeViewApp::log_events(SELF, EVT)],
OnTreeItemSelectionChanged: [TreeViewApp::log_events(SELF, EVT)],
)]
tree_view: nwg::TreeView,
#[nwg_control(flags: "VISIBLE")]
#[nwg_layout_item(layout: layout, col: 3, col_span: 2, row: 0, row_span: 3,)]
control_frame: nwg::Frame,
#[nwg_layout(parent: control_frame, spacing: 3, margin: [0,0,0,0])]
control_layout: nwg::GridLayout,
#[nwg_control(parent: control_frame, text: "Options:")]
#[nwg_layout_item(layout: control_layout, col: 0, row: 0)]
label1: nwg::Label,
#[nwg_control(parent: control_frame, text: "New item name")]
#[nwg_layout_item(layout: control_layout, col: 0, col_span: 2, row: 1)]
new_item: nwg::TextInput,
#[nwg_control(parent: control_frame, text: "Add")]
#[nwg_layout_item(layout: control_layout, col: 0, row: 2)]
#[nwg_events(OnButtonClick: [TreeViewApp::button_actions(SELF, CTRL)])]
add_btn: nwg::Button,
#[nwg_control(parent: control_frame, text: "Del")]
#[nwg_layout_item(layout: control_layout, col: 1, row: 2)]
#[nwg_events(OnButtonClick: [TreeViewApp::button_actions(SELF, CTRL)])]
remove_btn: nwg::Button,
#[nwg_control(text: "Events:")]
#[nwg_layout_item(layout: layout, col: 3, col_span: 2, row: 3)]
label2: nwg::Label,
#[nwg_control]
#[nwg_layout_item(layout: layout, col: 3, col_span: 2, row: 4, row_span: 2)]
events_log: nwg::ListBox<String>,
}
impl TreeViewApp {
fn load_data(&self) {
let tv = &self.tree_view;
let icons = &self.view_icons;
icons.add_icon_from_filename("./test_rc/cog.ico").unwrap();
icons.add_icon_from_filename("./test_rc/love.ico").unwrap();
tv.set_image_list(Some(icons));
let root = tv.insert_item("Caniformia", None, nwg::TreeInsert::Root);
tv.insert_item("Canidae (dogs and other canines)", Some(&root), nwg::TreeInsert::Last);
let arc = tv.insert_item("Arctoidea", Some(&root), nwg::TreeInsert::Last);
tv.insert_item("Ursidae (bears)", Some(&arc), nwg::TreeInsert::Last);
let mus = tv.insert_item("Musteloidea (weasel)", Some(&arc), nwg::TreeInsert::Last);
tv.insert_item("Mephitidae (skunks)", Some(&mus), nwg::TreeInsert::Last);
tv.insert_item("Ailuridae (red panda)", Some(&mus), nwg::TreeInsert::Last);
tv.insert_item("Procyonidae (raccoons and allies)", Some(&mus), nwg::TreeInsert::Last);
tv.insert_item("Mustelidae (weasels and allies)", Some(&mus), nwg::TreeInsert::Last);
tv.set_text_color(50, 50, 200);
// Expand and sets the selected icon for each item in the tree
for item in tv.iter() {
tv.set_expand_state(&item, nwg::ExpandState::Expand);
tv.set_item_image(&item, 1, true);
}
}
fn button_actions(&self, btn: &nwg::Button) {
let tv = &self.tree_view;
if btn == &self.add_btn {
let text = self.new_item.text();
let item = match tv.selected_item() {
Some(i) => { tv.insert_item(&text, Some(&i), nwg::TreeInsert::Last) },
None => { tv.insert_item(&text, None, nwg::TreeInsert::Root) }
};
tv.set_item_image(&item, 1, true);
} else if btn == &self.remove_btn {
if let Some(item) = tv.selected_item() {
tv.remove_item(&item);
}
}
}
fn log_events(&self, evt: nwg::Event) {
self.events_log.insert(0, format!("{:?}", evt));
}
fn exit(&self) {
nwg::stop_thread_dispatch();
}
}
fn main() {
nwg::init().expect("Failed to init Native Windows GUI");
nwg::Font::set_global_family("Segoe UI").expect("Failed to set default font");
let _app = TreeViewApp::build_ui(Default::default()).expect("Failed to build UI");
nwg::dispatch_thread_events();
}