1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190
use std::ops::Deref; use std::rc::Rc; use std::cell::RefCell; use gtk; use gtk::prelude::*; use glib; use glib::signal; use pango; use neovim_lib::{NeovimApi, NeovimApiAsync}; use neovim_lib::neovim_api::Tabpage; use crate::nvim; use crate::nvim::ErrorReport; struct State { data: Vec<Tabpage>, selected: Option<Tabpage>, nvim: Option<Rc<nvim::NeovimClient>>, } impl State { pub fn new() -> Self { State { data: Vec::new(), selected: None, nvim: None, } } fn switch_page(&self, idx: u32) { let target = &self.data[idx as usize]; if Some(target) != self.selected.as_ref() { if let Some(mut nvim) = self.nvim.as_ref().unwrap().nvim() { nvim.set_current_tabpage(target).report_err(); } } } fn close_tab(&self, idx: u32) { if let Some(mut nvim) = self.nvim.as_ref().unwrap().nvim() { nvim.command_async(&format!(":tabc {}", idx + 1)) .cb(|r| r.report_err()) .call(); } } } pub struct Tabline { tabs: gtk::Notebook, state: Rc<RefCell<State>>, switch_handler_id: glib::SignalHandlerId, } impl Tabline { pub fn new() -> Self { let tabs = gtk::Notebook::new(); tabs.set_can_focus(false); tabs.set_scrollable(true); tabs.set_show_border(false); tabs.set_border_width(0); tabs.set_hexpand(true); tabs.hide(); let state = Rc::new(RefCell::new(State::new())); let state_ref = state.clone(); let switch_handler_id = tabs.connect_switch_page(move |_, _, idx| state_ref.borrow().switch_page(idx)); Tabline { tabs, state, switch_handler_id, } } fn update_state( &self, nvim: &Rc<nvim::NeovimClient>, selected: &Tabpage, tabs: &[(Tabpage, Option<String>)], ) { let mut state = self.state.borrow_mut(); if state.nvim.is_none() { state.nvim = Some(nvim.clone()); } state.selected = Some(selected.clone()); state.data = tabs.iter().map(|item| item.0.clone()).collect(); } pub fn update_tabs( &self, nvim: &Rc<nvim::NeovimClient>, selected: &Tabpage, tabs: &[(Tabpage, Option<String>)], ) { if tabs.len() <= 1 { self.tabs.hide(); return; } else { self.tabs.show(); } self.update_state(nvim, selected, tabs); signal::signal_handler_block(&self.tabs, &self.switch_handler_id); let count = self.tabs.get_n_pages() as usize; if count < tabs.len() { for _ in count..tabs.len() { let empty = gtk::Box::new(gtk::Orientation::Vertical, 0); empty.show_all(); let title = gtk::Label::new(None); title.set_ellipsize(pango::EllipsizeMode::Middle); title.set_width_chars(25); let close_btn = gtk::Button::new_from_icon_name( "window-close-symbolic", gtk::IconSize::Menu.into(), ); close_btn.set_relief(gtk::ReliefStyle::None); close_btn.get_style_context().add_class("small-button"); close_btn.set_focus_on_click(false); let label_box = gtk::Box::new(gtk::Orientation::Horizontal, 0); label_box.pack_start(&title, true, false, 0); label_box.pack_start(&close_btn, false, false, 0); title.show(); close_btn.show(); self.tabs.append_page(&empty, Some(&label_box)); self.tabs.set_child_tab_expand(&empty, true); let tabs = self.tabs.clone(); let state_ref = Rc::clone(&self.state); close_btn.connect_clicked(move |btn| { let current_label = btn .get_parent().unwrap(); for i in 0..tabs.get_n_pages() { let page = tabs.get_nth_page(Some(i)).unwrap(); let label = tabs.get_tab_label(&page).unwrap(); if label == current_label { state_ref.borrow().close_tab(i); } } }); } } else if count > tabs.len() { for _ in tabs.len()..count { self.tabs.remove_page(None); } } for (idx, tab) in tabs.iter().enumerate() { let tab_child = self.tabs.get_nth_page(Some(idx as u32)); let tab_label = self.tabs .get_tab_label(&tab_child.unwrap()) .unwrap() .downcast::<gtk::Box>() .unwrap() .get_children() .into_iter() .next() .unwrap() .downcast::<gtk::Label>() .unwrap(); tab_label.set_text(tab.1.as_ref().unwrap_or(&"??".to_owned())); if *selected == tab.0 { self.tabs.set_current_page(Some(idx as u32)); } } signal::signal_handler_unblock(&self.tabs, &self.switch_handler_id); } } impl Deref for Tabline { type Target = gtk::Notebook; fn deref(&self) -> >k::Notebook { &self.tabs } }