Make `TreeView` follow the current tab (#1411)

* Make `TreeView` follow the current tab

* Use `TreeView:toggle_expand` in `TreeView:set_selection_to_path`

We can't use `item.expanded` directly because we need to update the 
cached tree structure.
This commit is contained in:
Guldoman 2023-03-16 22:29:33 +01:00 committed by George Sokianos
parent 94e2df991c
commit e66174f9d8
1 changed files with 86 additions and 8 deletions

View File

@ -9,10 +9,15 @@ local View = require "core.view"
local ContextMenu = require "core.contextmenu"
local RootView = require "core.rootview"
local CommandView = require "core.commandview"
local DocView = require "core.docview"
config.plugins.treeview = common.merge({
-- Default treeview width
size = 200 * SCALE
size = 200 * SCALE,
highlight_focused_file = true,
expand_dirs_to_focused_file = false,
scroll_to_focused_file = false,
animate_scroll_to_focused_file = true
}, config.plugins.treeview)
local tooltip_offset = style.font:get_height()
@ -169,18 +174,71 @@ function TreeView:each_item()
end
function TreeView:set_selection(selection, selection_y)
function TreeView:set_selection(selection, selection_y, center, instant)
self.selected_item = selection
if selection and selection_y
and (selection_y <= 0 or selection_y >= self.size.y) then
local lh = self:get_item_height()
if selection_y >= self.size.y - lh then
if not center and selection_y >= self.size.y - lh then
selection_y = selection_y - self.size.y + lh
end
local _, y = self:get_content_offset()
self.scroll.to.y = selection and (selection_y - y)
if center then
selection_y = selection_y - (self.size.y - lh) / 2
end
local _, y = self:get_content_offset()
self.scroll.to.y = selection_y - y
self.scroll.to.y = common.clamp(self.scroll.to.y, 0, self:get_scrollable_size() - self.size.y)
if instant then
self.scroll.y = self.scroll.to.y
end
end
end
---Sets the selection to the file with the specified path.
---
---@param path string #Absolute path of item to select
---@param expand boolean #Expand dirs leading to the item
---@param scroll_to boolean #Scroll to make the item visible
---@param instant boolean #Don't animate the scroll
---@return table? #The selected item
function TreeView:set_selection_to_path(path, expand, scroll_to, instant)
local to_select, to_select_y
local let_it_finish, done
::restart::
for item, x,y,w,h in self:each_item() do
if not done then
if item.type == "dir" then
local _, to = string.find(path, item.abs_filename..PATHSEP, 1, true)
if to and to == #item.abs_filename + #PATHSEP then
to_select, to_select_y = item, y
if expand and not item.expanded then
-- Use TreeView:toggle_expand to update the directory structure.
-- Directly using item.expanded doesn't update the cached tree.
self:toggle_expand(true, item)
-- Because we altered the size of the TreeView
-- and because TreeView:get_scrollable_size uses self.count_lines
-- which gets updated only when TreeView:each_item finishes,
-- we can't stop here or we risk that the scroll
-- gets clamped by View:clamp_scroll_position.
let_it_finish = true
-- We need to restart the process because if TreeView:toggle_expand
-- altered the cache, TreeView:each_item risks looping indefinitely.
goto restart
end
end
else
if item.abs_filename == path then
to_select, to_select_y = item, y
done = true
if not let_it_finish then break end
end
end
end
end
if to_select then
self:set_selection(to_select, scroll_to and to_select_y, true, instant)
end
return to_select
end
@ -233,7 +291,7 @@ function TreeView:update()
self:move_towards(self.size, "x", dest, nil, "treeview")
end
if not self.visible then return end
if self.size.x == 0 or self.size.y == 0 or not self.visible then return end
local duration = system.get_time() - self.tooltip.begin
if self.hovered_item and self.tooltip.x and duration > tooltip_delay then
@ -252,6 +310,26 @@ function TreeView:update()
self:on_mouse_moved(self.cursor_pos.x, self.cursor_pos.y, 0, 0)
end
local config = config.plugins.treeview
if config.highlight_focused_file then
-- Try to only highlight when we actually change tabs
local current_node = core.root_view:get_active_node()
local current_active_view = core.active_view
if current_node and not current_node.locked
and current_active_view ~= self and current_active_view ~= self.last_active_view then
self.selected_item = nil
self.last_active_view = current_active_view
if DocView:is_extended_by(current_active_view) then
local abs_filename = current_active_view.doc
and current_active_view.doc.abs_filename or ""
self:set_selection_to_path(abs_filename,
config.expand_dirs_to_focused_file,
config.scroll_to_focused_file,
not config.animate_scroll_to_focused_file)
end
end
end
TreeView.super.update(self)
end
@ -422,8 +500,8 @@ function TreeView:get_previous(item)
end
function TreeView:toggle_expand(toggle)
local item = self.selected_item
function TreeView:toggle_expand(toggle, item)
item = item or self.selected_item
if not item then return end