Method handle_message

webiojs/src/handlers/input.ts:70–118

(msg: Command)

    * 每次函数调用返回后，this.form_ctrls.get_top()的栈顶对应的表单为当前活跃表单
    * */
    handle_message(msg: Command) {
        let old_ctrls = this.form_ctrls.get_top();
        let old_ctrl = old_ctrls && old_ctrls[old_ctrls.length - 1];
        let target_ctrls = this.form_ctrls.get_value(msg.task_id);
        if (target_ctrls === undefined) {
            this.form_ctrls.push(msg.task_id, []);
            target_ctrls = this.form_ctrls.get_value(msg.task_id);
        }

        // 创建表单
        if (msg.command in make_set(['input', 'input_group'])) {
            let ctrl = new FormController(this.session, msg.task_id, msg.spec);
            target_ctrls.push(ctrl);
            this.container_elem.append(ctrl.create_element());
            ctrl.after_add_to_dom();
            this._activate_form(msg.task_id, old_ctrl);
        } else if (msg.command in make_set(['update_input'])) {
            // 更新表单
            if (target_ctrls.length === 0) {
                return console.error('No form to current message. task_id:%s', msg.task_id);
            }
            target_ctrls[target_ctrls.length - 1].dispatch_ctrl_message(msg.spec);
            // 表单前置 removed
            // this._activate_form(msg.task_id, old_ctrl);
        } else if (msg.command === 'destroy_form') {
            if (target_ctrls.length === 0) {
                return console.error('No form to current message. task_id:%s', msg.task_id);
            }
            let deleted = target_ctrls.pop() as FormController;
            if (target_ctrls.length === 0)
                this.form_ctrls.remove(msg.task_id);

            // 销毁的是当前显示的form
            if (old_ctrls === target_ctrls) {
                deleted.element.hide(100, () => {
                    deleted.element.remove();
                    close_input();

                    let t = this.form_ctrls.get_top();
                    if (t) t[t.length - 1].element.show(state.ShowDuration, () => {
                        this._after_show_form()
                    });
                });
            } else {
                deleted.element.remove();
                close_input();
            }
        }
    }
}