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import { get_supported_effects } from '../effects/effects.js';
/// An object to manage effects (by not destroying them all the time)
export const EffectsManager = class EffectsManager {
constructor(connections) {
this.connections = connections;
this.used = new Set();
this.SUPPORTED_EFFECTS = get_supported_effects();
Object.keys(this.SUPPORTED_EFFECTS).forEach(effect_name => {
// init the arrays containing each unused effect
this[effect_name + '_effects'] = [];
// init the functions for each effect
this['new_' + effect_name + '_effect'] = function (params) {
let effect;
if (this[effect_name + '_effects'].length > 0) {
effect = this[effect_name + '_effects'].pop();
effect.set({
...this.SUPPORTED_EFFECTS[effect_name].class.default_params, ...params
});
} else {
effect = new this.SUPPORTED_EFFECTS[effect_name].class({
...this.SUPPORTED_EFFECTS[effect_name].class.default_params, ...params
});
this.connect_to_destroy(effect);
}
this.used.add(effect);
return effect;
};
});
}
connect_to_destroy(effect) {
const update_actor = () => {
const actor = effect.get_actor();
if (actor === effect._bms_actor)
return;
this.disconnect_actor_destroy(effect);
effect._bms_actor = actor;
if (actor)
effect._bms_actor_destroy_id = actor.connect(
'destroy', () => this.remove(effect, true)
);
};
this.connections.connect(effect, 'notify::actor', update_actor);
update_actor();
}
disconnect_actor_destroy(effect) {
if (effect._bms_actor && effect._bms_actor_destroy_id) {
effect._bms_actor.disconnect(effect._bms_actor_destroy_id);
}
effect._bms_actor = null;
effect._bms_actor_destroy_id = null;
}
remove(effect) {
const actor = effect.get_actor();
if (actor)
actor.remove_effect(effect);
this.disconnect_actor_destroy(effect);
if (this.used.delete(effect)) {
Object.keys(this.SUPPORTED_EFFECTS).forEach(effect_name => {
if (effect instanceof this.SUPPORTED_EFFECTS[effect_name].class)
this[effect_name + '_effects'].push(effect);
});
}
}
destroy_all() {
const immutable_used_list = [...this.used];
immutable_used_list.forEach(effect => this.remove(effect));
Object.keys(this.SUPPORTED_EFFECTS).forEach(effect_name => {
this[effect_name + '_effects'].splice(0, this[effect_name + '_effects'].length);
});
}
_warn(str) {
console.warn(`[Blur my Shell > effects mng] ${str}`);
}
};
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