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|
use scene::{Project, Scene};
use crate::command::{Command, CommandError, CommandResult};
pub struct DeleteSceneCommand {
scene_id: String,
saved_scenes: Option<Vec<Scene>>,
saved_current_scene_id: Option<String>,
}
impl DeleteSceneCommand {
pub fn new(scene_id: impl Into<String>) -> Self {
Self {
scene_id: scene_id.into(),
saved_scenes: None,
saved_current_scene_id: None,
}
}
}
impl Command for DeleteSceneCommand {
fn execute(
&mut self,
project: &mut Project,
) -> Result<Option<CommandResult>, CommandError> {
let Some(deleted) = project.scenes.iter().find(|scene| scene.id == self.scene_id)
else {
return Ok(None);
};
if deleted.is_main {
return Ok(None);
}
self.saved_scenes = Some(project.scenes.clone());
self.saved_current_scene_id = Some(project.current_scene_id.clone());
project.scenes.retain(|scene| scene.id != self.scene_id);
if project.current_scene_id == self.scene_id {
let fallback_id = project
.scenes
.iter()
.find(|scene| scene.is_main)
.map(|scene| scene.id.clone());
if let Some(fallback_id) = fallback_id {
project.current_scene_id = fallback_id;
}
}
Ok(None)
}
fn undo(&mut self, project: &mut Project) {
let (Some(saved_scenes), Some(saved_current_scene_id)) =
(&self.saved_scenes, &self.saved_current_scene_id)
else {
return;
};
project.scenes = saved_scenes.clone();
project.current_scene_id = saved_current_scene_id.clone();
}
}
|
