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#![windows_subsystem = "windows"]
use druid::widget::{Align, Button, Flex, TextBox};
use druid::{
commands, AppDelegate, AppLauncher, Command, DelegateCtx, Env, FileDialogOptions, FileSpec,
Handled, LocalizedString, Target, Widget, WindowDesc,
};
struct Delegate;
pub fn main() {
let main_window = WindowDesc::new(ui_builder())
.title(LocalizedString::new("open-save-demo").with_placeholder("Opening/Saving Demo"));
let data = "Type here.".to_owned();
AppLauncher::with_window(main_window)
.delegate(Delegate)
.log_to_console()
.launch(data)
.expect("launch failed");
}
fn ui_builder() -> impl Widget<String> {
let rs = FileSpec::new("Rust source", &["rs"]);
let txt = FileSpec::new("Text file", &["txt"]);
let other = FileSpec::new("Bogus file", &["foo", "bar", "baz"]);
let default_save_name = String::from("MyFile.txt");
let save_dialog_options = FileDialogOptions::new()
.allowed_types(vec![rs, txt, other])
.default_type(txt)
.default_name(default_save_name)
.name_label("Target")
.title("Choose a target for this lovely file")
.button_text("Export");
let open_dialog_options = save_dialog_options
.clone()
.default_name("MySavedFile.txt")
.name_label("Source")
.title("Where did you put that file?")
.button_text("Import");
let input = TextBox::new();
let save = Button::new("Save").on_click(move |ctx, _, _| {
ctx.submit_command(druid::commands::SHOW_SAVE_PANEL.with(save_dialog_options.clone()))
});
let open = Button::new("Open").on_click(move |ctx, _, _| {
ctx.submit_command(druid::commands::SHOW_OPEN_PANEL.with(open_dialog_options.clone()))
});
let mut col = Flex::column();
col.add_child(input);
col.add_spacer(8.0);
col.add_child(save);
col.add_child(open);
Align::centered(col)
}
impl AppDelegate<String> for Delegate {
fn command(
&mut self,
_ctx: &mut DelegateCtx,
_target: Target,
cmd: &Command,
data: &mut String,
_env: &Env,
) -> Handled {
if let Some(file_info) = cmd.get(commands::SAVE_FILE_AS) {
if let Err(e) = std::fs::write(file_info.path(), &data[..]) {
println!("Error writing file: {e}");
}
return Handled::Yes;
}
if let Some(file_info) = cmd.get(commands::OPEN_FILE) {
match std::fs::read_to_string(file_info.path()) {
Ok(s) => {
let first_line = s.lines().next().unwrap_or("");
*data = first_line.to_owned();
}
Err(e) => {
println!("Error opening file: {e}");
}
}
return Handled::Yes;
}
Handled::No
}
}