lite-xl/data/plugins/treeview.lua

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-- mod-version:3
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local core = require "core"
local common = require "core.common"
local command = require "core.command"
local config = require "core.config"
local keymap = require "core.keymap"
local style = require "core.style"
local View = require "core.view"
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local ContextMenu = require "core.contextmenu"
local RootView = require "core.rootview"
local CommandView = require "core.commandview"
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config.plugins.treeview = common.merge({
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-- Default treeview width
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size = 200 * SCALE
}, config.plugins.treeview)
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local tooltip_offset = style.font:get_height()
local tooltip_border = 1
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local tooltip_delay = 0.5
local tooltip_alpha = 255
local tooltip_alpha_rate = 1
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local function get_depth(filename)
local n = 1
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for sep in filename:gmatch("[\\/]") do
n = n + 1
end
return n
end
local function replace_alpha(color, alpha)
local r, g, b = table.unpack(color)
return { r, g, b, alpha }
end
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local TreeView = View:extend()
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function TreeView:new()
TreeView.super.new(self)
self.scrollable = true
self.visible = true
self.init_size = true
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self.target_size = config.plugins.treeview.size
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self.cache = {}
self.tooltip = { x = 0, y = 0, begin = 0, alpha = 0 }
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self.cursor_pos = { x = 0, y = 0 }
self.item_icon_width = 0
self.item_text_spacing = 0
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self:add_core_hooks()
end
function TreeView:add_core_hooks()
-- When a file or directory is deleted we delete the corresponding cache entry
-- because if the entry is recreated we may use wrong information from cache.
local on_delete = core.on_dirmonitor_delete
core.on_dirmonitor_delete = function(dir, filepath)
local cache = self.cache[dir.name]
if cache then cache[filepath] = nil end
on_delete(dir, filepath)
end
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end
function TreeView:set_target_size(axis, value)
if axis == "x" then
self.target_size = value
return true
end
end
function TreeView:get_cached(dir, item, dirname)
local dir_cache = self.cache[dirname]
if not dir_cache then
dir_cache = {}
self.cache[dirname] = dir_cache
end
-- to discriminate top directories from regular files or subdirectories
-- we add ':' at the end of the top directories' filename. it will be
-- used only to identify the entry into the cache.
local cache_name = item.filename .. (item.topdir and ":" or "")
local t = dir_cache[cache_name]
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if not t then
t = {}
local basename = common.basename(item.filename)
if item.topdir then
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t.filename = basename
t.expanded = true
t.depth = 0
t.abs_filename = dirname
else
t.filename = item.filename
t.depth = get_depth(item.filename)
t.abs_filename = dirname .. PATHSEP .. item.filename
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end
t.name = basename
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t.type = item.type
t.dir_name = dir.name -- points to top level "dir" item
dir_cache[cache_name] = t
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end
return t
end
function TreeView:get_name()
return nil
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end
function TreeView:get_item_height()
return style.font:get_height() + style.padding.y
end
function TreeView:invalidate_cache(dirname)
for _, v in pairs(self.cache[dirname]) do
v.skip = nil
end
end
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function TreeView:check_cache()
for i = 1, #core.project_directories do
local dir = core.project_directories[i]
-- invalidate cache's skip values if directory is declared dirty
if dir.is_dirty and self.cache[dir.name] then
self:invalidate_cache(dir.name)
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end
dir.is_dirty = false
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end
end
function TreeView:each_item()
return coroutine.wrap(function()
self:check_cache()
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local count_lines = 0
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local ox, oy = self:get_content_offset()
local y = oy + style.padding.y
local w = self.size.x
local h = self:get_item_height()
for k = 1, #core.project_directories do
local dir = core.project_directories[k]
local dir_cached = self:get_cached(dir, dir.item, dir.name)
coroutine.yield(dir_cached, ox, y, w, h)
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count_lines = count_lines + 1
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y = y + h
local i = 1
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while i <= #dir.files and dir_cached.expanded do
local item = dir.files[i]
local cached = self:get_cached(dir, item, dir.name)
coroutine.yield(cached, ox, y, w, h)
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count_lines = count_lines + 1
y = y + h
i = i + 1
if not cached.expanded then
if cached.skip then
i = cached.skip
else
local depth = cached.depth
while i <= #dir.files do
if get_depth(dir.files[i].filename) <= depth then break end
i = i + 1
end
cached.skip = i
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end
end
end -- while files
end -- for directories
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self.count_lines = count_lines
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end)
end
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function TreeView:set_selection(selection, selection_y)
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
selection_y = selection_y - self.size.y + lh
end
local _, y = self:get_content_offset()
self.scroll.to.y = selection and (selection_y - y)
end
end
function TreeView:get_text_bounding_box(item, x, y, w, h)
local icon_width = style.icon_font:get_width("D")
local xoffset = item.depth * style.padding.x + style.padding.x + icon_width
x = x + xoffset
w = style.font:get_width(item.name) + 2 * style.padding.x
return x, y, w, h
end
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function TreeView:on_mouse_moved(px, py, ...)
if not self.visible then return end
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TreeView.super.on_mouse_moved(self, px, py, ...)
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self.cursor_pos.x = px
self.cursor_pos.y = py
if self.dragging_scrollbar then
self.hovered_item = nil
return
end
local item_changed, tooltip_changed
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for item, x,y,w,h in self:each_item() do
if px > x and py > y and px <= x + w and py <= y + h then
item_changed = true
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self.hovered_item = item
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x,y,w,h = self:get_text_bounding_box(item, x,y,w,h)
if px > x and py > y and px <= x + w and py <= y + h then
tooltip_changed = true
self.tooltip.x, self.tooltip.y = px, py
self.tooltip.begin = system.get_time()
end
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break
end
end
if not item_changed then self.hovered_item = nil end
if not tooltip_changed then self.tooltip.x, self.tooltip.y = nil, nil end
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end
function TreeView:update()
-- update width
local dest = self.visible and self.target_size or 0
if self.init_size then
self.size.x = dest
self.init_size = false
else
self:move_towards(self.size, "x", dest, nil, "treeview")
end
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if 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
self:move_towards(self.tooltip, "alpha", tooltip_alpha, tooltip_alpha_rate, "treeview")
else
self.tooltip.alpha = 0
end
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self.item_icon_width = style.icon_font:get_width("D")
self.item_text_spacing = style.icon_font:get_width("f") / 2
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-- this will make sure hovered_item is updated
-- we don't want events when the thing is scrolling fast
local dy = math.abs(self.scroll.to.y - self.scroll.y)
if self.scroll.to.y ~= 0 and dy < self:get_item_height() then
self:on_mouse_moved(self.cursor_pos.x, self.cursor_pos.y, 0, 0)
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end
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TreeView.super.update(self)
end
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function TreeView:get_scrollable_size()
return self.count_lines and self:get_item_height() * (self.count_lines + 1) or math.huge
end
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function TreeView:draw_tooltip()
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local text = common.home_encode(self.hovered_item.abs_filename)
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local w, h = style.font:get_width(text), style.font:get_height(text)
local x, y = self.tooltip.x + tooltip_offset, self.tooltip.y + tooltip_offset
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w, h = w + style.padding.x, h + style.padding.y
if x + w > core.root_view.root_node.size.x then -- check if we can span right
x = x - w -- span left instead
end
local bx, by = x - tooltip_border, y - tooltip_border
local bw, bh = w + 2 * tooltip_border, h + 2 * tooltip_border
renderer.draw_rect(bx, by, bw, bh, replace_alpha(style.text, self.tooltip.alpha))
renderer.draw_rect(x, y, w, h, replace_alpha(style.background2, self.tooltip.alpha))
common.draw_text(style.font, replace_alpha(style.text, self.tooltip.alpha), text, "center", x, y, w, h)
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end
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function TreeView:get_item_icon(item, active, hovered)
local character = "f"
if item.type == "dir" then
character = item.expanded and "D" or "d"
end
local font = style.icon_font
local color = style.text
if active or hovered then
color = style.accent
end
return character, font, color
end
function TreeView:get_item_text(item, active, hovered)
local text = item.name
local font = style.font
local color = style.text
if active or hovered then
color = style.accent
end
return text, font, color
end
function TreeView:draw_item_text(item, active, hovered, x, y, w, h)
local item_text, item_font, item_color = self:get_item_text(item, active, hovered)
common.draw_text(item_font, item_color, item_text, nil, x, y, 0, h)
end
function TreeView:draw_item_icon(item, active, hovered, x, y, w, h)
local icon_char, icon_font, icon_color = self:get_item_icon(item, active, hovered)
common.draw_text(icon_font, icon_color, icon_char, nil, x, y, 0, h)
return self.item_icon_width + self.item_text_spacing
end
function TreeView:draw_item_body(item, active, hovered, x, y, w, h)
x = x + self:draw_item_icon(item, active, hovered, x, y, w, h)
self:draw_item_text(item, active, hovered, x, y, w, h)
end
function TreeView:draw_item_chevron(item, active, hovered, x, y, w, h)
if item.type == "dir" then
local chevron_icon = item.expanded and "-" or "+"
local chevron_color = hovered and style.accent or style.text
common.draw_text(style.icon_font, chevron_color, chevron_icon, nil, x, y, 0, h)
end
return style.padding.x
end
function TreeView:draw_item_background(item, active, hovered, x, y, w, h)
if hovered then
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local hover_color = { table.unpack(style.line_highlight) }
hover_color[4] = 160
renderer.draw_rect(x, y, w, h, hover_color)
elseif active then
renderer.draw_rect(x, y, w, h, style.line_highlight)
end
end
function TreeView:draw_item(item, active, hovered, x, y, w, h)
self:draw_item_background(item, active, hovered, x, y, w, h)
x = x + item.depth * style.padding.x + style.padding.x
x = x + self:draw_item_chevron(item, active, hovered, x, y, w, h)
self:draw_item_body(item, active, hovered, x, y, w, h)
end
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function TreeView:draw()
if not self.visible then return end
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self:draw_background(style.background2)
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local _y, _h = self.position.y, self.size.y
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local doc = core.active_view.doc
local active_filename = doc and system.absolute_path(doc.filename or "")
for item, x,y,w,h in self:each_item() do
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if y + h >= _y and y < _y + _h then
self:draw_item(item,
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item == self.selected_item,
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item == self.hovered_item,
x, y, w, h)
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end
end
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self:draw_scrollbar()
if self.hovered_item and self.tooltip.x and self.tooltip.alpha > 0 then
core.root_view:defer_draw(self.draw_tooltip, self)
end
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end
function TreeView:get_parent(item)
local parent_path = common.dirname(item.abs_filename)
if not parent_path then return end
for it, _, y in self:each_item() do
if it.abs_filename == parent_path then
return it, y
end
end
end
function TreeView:get_item(item, where)
local last_item, last_x, last_y, last_w, last_h
local stop = false
for it, x, y, w, h in self:each_item() do
if not item and where >= 0 then
return it, x, y, w, h
end
if item == it then
if where < 0 and last_item then
break
elseif where == 0 or (where < 0 and not last_item) then
return it, x, y, w, h
end
stop = true
elseif stop then
item = it
return it, x, y, w, h
end
last_item, last_x, last_y, last_w, last_h = it, x, y, w, h
end
return last_item, last_x, last_y, last_w, last_h
end
function TreeView:get_next(item)
return self:get_item(item, 1)
end
function TreeView:get_previous(item)
return self:get_item(item, -1)
end
function TreeView:toggle_expand(toggle)
local item = self.selected_item
if not item then return end
if item.type == "dir" then
if type(toggle) == "boolean" then
item.expanded = toggle
else
item.expanded = not item.expanded
end
local hovered_dir = core.project_dir_by_name(item.dir_name)
if hovered_dir and hovered_dir.files_limit then
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core.update_project_subdir(hovered_dir, item.depth == 0 and "" or item.filename, item.expanded)
end
end
end
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-- init
local view = TreeView()
local node = core.root_view:get_active_node()
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local treeview_node = node:split("left", view, {x = true}, true)
-- The toolbarview plugin is special because it is plugged inside
-- a treeview pane which is itelf provided in a plugin.
-- We therefore break the usual plugin's logic that would require each
-- plugin to be independent of each other. In addition it is not the
-- plugin module that plug itself in the active node but it is plugged here
-- in the treeview node.
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local toolbar_view = nil
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local toolbar_plugin, ToolbarView = core.try(require, "plugins.toolbarview")
if config.plugins.toolbarview ~= false and toolbar_plugin then
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toolbar_view = ToolbarView()
treeview_node:split("down", toolbar_view, {y = true})
local min_toolbar_width = toolbar_view:get_min_width()
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view:set_target_size("x", math.max(config.plugins.treeview.size, min_toolbar_width))
command.add(nil, {
["toolbar:toggle"] = function()
toolbar_view:toggle_visible()
end,
})
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end
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-- Add a context menu to the treeview
local menu = ContextMenu()
local on_view_mouse_pressed = RootView.on_view_mouse_pressed
local on_mouse_moved = RootView.on_mouse_moved
local root_view_update = RootView.update
local root_view_draw = RootView.draw
function RootView:on_mouse_moved(...)
if menu:on_mouse_moved(...) then return end
on_mouse_moved(self, ...)
end
function RootView.on_view_mouse_pressed(button, x, y, clicks)
-- We give the priority to the menu to process mouse pressed events.
if button == "right" then
view.tooltip.alpha = 0
view.tooltip.x, view.tooltip.y = nil, nil
end
local handled = menu:on_mouse_pressed(button, x, y, clicks)
return handled or on_view_mouse_pressed(button, x, y, clicks)
end
function RootView:update(...)
root_view_update(self, ...)
menu:update()
end
function RootView:draw(...)
root_view_draw(self, ...)
menu:draw()
end
local on_quit_project = core.on_quit_project
function core.on_quit_project()
view.cache = {}
on_quit_project()
end
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local function is_project_folder(path)
for _,dir in pairs(core.project_directories) do
if dir.name == path then
return true
end
end
return false
end
local function is_primary_project_folder(path)
return core.project_dir == path
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end
menu:register(function() return view.hovered_item end, {
{ text = "Open in System", command = "treeview:open-in-system" },
ContextMenu.DIVIDER
})
menu:register(
function()
return view.hovered_item
and not is_project_folder(view.hovered_item.abs_filename)
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end,
{
{ text = "Rename", command = "treeview:rename" },
{ text = "Delete", command = "treeview:delete" },
}
)
menu:register(
function()
return view.hovered_item and view.hovered_item.type == "dir"
end,
{
{ text = "New File", command = "treeview:new-file" },
{ text = "New Folder", command = "treeview:new-folder" },
}
)
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menu:register(
function()
return view.hovered_item
and not is_primary_project_folder(view.hovered_item.abs_filename)
and is_project_folder(view.hovered_item.abs_filename)
end,
{
{ text = "Remove directory", command = "treeview:remove-project-directory" },
}
)
local previous_view = nil
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-- Register the TreeView commands and keymap
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command.add(nil, {
["treeview:toggle"] = function()
view.visible = not view.visible
end,
["treeview:toggle-focus"] = function()
if not core.active_view:is(TreeView) then
if core.active_view:is(CommandView) then
previous_view = core.last_active_view
else
previous_view = core.active_view
end
if not previous_view then
previous_view = core.root_view:get_primary_node().active_view
end
core.set_active_view(view)
if not view.selected_item then
for it, _, y in view:each_item() do
view:set_selection(it, y)
break
end
end
else
core.set_active_view(
previous_view or core.root_view:get_primary_node().active_view
)
end
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end
})
command.add(TreeView, {
["treeview:next"] = function()
local item, _, item_y = view:get_next(view.selected_item)
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view:set_selection(item, item_y)
end,
["treeview:previous"] = function()
local item, _, item_y = view:get_previous(view.selected_item)
view:set_selection(item, item_y)
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end,
["treeview:open"] = function()
local item = view.selected_item
if not item then return end
if item.type == "dir" then
view:toggle_expand()
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else
core.try(function()
if core.last_active_view and core.active_view == view then
core.set_active_view(core.last_active_view)
end
local doc_filename = core.normalize_to_project_dir(item.abs_filename)
core.root_view:open_doc(core.open_doc(doc_filename))
end)
end
end,
["treeview:deselect"] = function()
view.selected_item = nil
end,
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["treeview:select"] = function()
view:set_selection(view.hovered_item)
end,
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["treeview:select-and-open"] = function()
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if view.hovered_item then
view:set_selection(view.hovered_item)
command.perform "treeview:open"
end
end,
["treeview:collapse"] = function()
if view.selected_item then
if view.selected_item.type == "dir" and view.selected_item.expanded then
view:toggle_expand(false)
else
local parent_item, y = view:get_parent(view.selected_item)
if parent_item then
view:set_selection(parent_item, y)
end
end
end
end,
["treeview:expand"] = function()
local item = view.selected_item
if not item or item.type ~= "dir" then return end
if item.expanded then
local next_item, _, next_y = view:get_next(item)
if next_item.depth > item.depth then
view:set_selection(next_item, next_y)
end
else
view:toggle_expand(true)
end
end,
})
local function treeitem() return view.hovered_item or view.selected_item end
command.add(
function()
return treeitem() ~= nil
and (
core.active_view == view or core.active_view == menu
or (view.toolbar and core.active_view == view.toolbar)
-- sometimes the context menu is shown on top of statusbar
or core.active_view == core.status_view
)
end, {
["treeview:delete"] = function()
local item = treeitem()
local filename = item.abs_filename
local relfilename = item.filename
if item.dir_name ~= core.project_dir then
-- add secondary project dirs names to the file path to show
relfilename = common.basename(item.dir_name) .. PATHSEP .. relfilename
end
local file_info = system.get_file_info(filename)
local file_type = file_info.type == "dir" and "Directory" or "File"
-- Ask before deleting
local opt = {
{ font = style.font, text = "Yes", default_yes = true },
{ font = style.font, text = "No" , default_no = true }
}
core.nag_view:show(
string.format("Delete %s", file_type),
string.format(
"Are you sure you want to delete the %s?\n%s: %s",
file_type:lower(), file_type, relfilename
),
opt,
function(item)
if item.text == "Yes" then
if file_info.type == "dir" then
local deleted, error, path = common.rm(filename, true)
if not deleted then
core.error("Error: %s - \"%s\" ", error, path)
return
end
else
local removed, error = os.remove(filename)
if not removed then
core.error("Error: %s - \"%s\"", error, filename)
return
end
end
core.log("Deleted \"%s\"", filename)
end
end
)
end
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})
command.add(function() return treeitem() ~= nil end, {
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["treeview:rename"] = function()
local item = treeitem()
local old_filename = item.filename
local old_abs_filename = item.abs_filename
core.command_view:enter("Rename", {
text = old_filename,
submit = function(filename)
local abs_filename = filename
if not common.is_absolute_path(filename) then
abs_filename = item.dir_name .. PATHSEP .. filename
end
local res, err = os.rename(old_abs_filename, abs_filename)
if res then -- successfully renamed
for _, doc in ipairs(core.docs) do
if doc.abs_filename and old_abs_filename == doc.abs_filename then
doc:set_filename(filename, abs_filename) -- make doc point to the new filename
doc:reset_syntax()
break -- only first needed
end
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end
core.log("Renamed \"%s\" to \"%s\"", old_filename, filename)
else
core.error("Error while renaming \"%s\" to \"%s\": %s", old_abs_filename, abs_filename, err)
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end
end,
suggest = function(text)
return common.path_suggest(text, item.dir_name)
end
})
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end,
["treeview:new-file"] = function()
local text
local item = treeitem()
if not is_project_folder(item.abs_filename) then
text = item.filename .. PATHSEP
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end
core.command_view:enter("Filename", {
text = text,
submit = function(filename)
local doc_filename = item.dir_name .. PATHSEP .. filename
core.log(doc_filename)
local file = io.open(doc_filename, "a+")
file:write("")
file:close()
core.root_view:open_doc(core.open_doc(doc_filename))
core.log("Created %s", doc_filename)
end,
suggest = function(text)
return common.path_suggest(text, item.dir_name)
end
})
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end,
["treeview:new-folder"] = function()
local text
local item = treeitem()
if not is_project_folder(item.abs_filename) then
text = item.filename .. PATHSEP
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end
core.command_view:enter("Folder Name", {
text = text,
submit = function(filename)
local dir_path = item.dir_name .. PATHSEP .. filename
common.mkdirp(dir_path)
core.log("Created %s", dir_path)
end,
suggest = function(text)
return common.path_suggest(text, item.dir_name)
end
})
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end,
["treeview:open-in-system"] = function()
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local hovered_item = treeitem()
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if PLATFORM == "Windows" then
system.exec(string.format("start \"\" %q", hovered_item.abs_filename))
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elseif string.find(PLATFORM, "Mac") then
system.exec(string.format("open %q", hovered_item.abs_filename))
elseif PLATFORM == "Linux" or string.find(PLATFORM, "BSD") then
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system.exec(string.format("xdg-open %q", hovered_item.abs_filename))
end
end
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})
command.add(function()
local item = treeitem()
return item
and not is_primary_project_folder(item.abs_filename)
and is_project_folder(item.abs_filename)
end, {
["treeview:remove-project-directory"] = function()
core.remove_project_directory(treeitem().dir_name)
end,
})
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keymap.add {
["ctrl+\\"] = "treeview:toggle",
["up"] = "treeview:previous",
["down"] = "treeview:next",
["left"] = "treeview:collapse",
["right"] = "treeview:expand",
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["return"] = "treeview:open",
["escape"] = "treeview:deselect",
["delete"] = "treeview:delete",
["ctrl+return"] = "treeview:new-folder",
["lclick"] = "treeview:select-and-open",
["mclick"] = "treeview:select",
["ctrl+lclick"] = "treeview:new-folder"
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}
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-- The config specification used by gui generators
config.plugins.treeview.config_spec = {
name = "Treeview",
{
label = "Size",
description = "Default treeview width.",
path = "size",
type = "number",
default = math.ceil(toolbar_view:get_min_width() / SCALE),
min = toolbar_view:get_min_width() / SCALE,
get_value = function(value)
return value / SCALE
end,
set_value = function(value)
return value * SCALE
end,
on_apply = function(value)
view:set_target_size("x", math.max(value, toolbar_view:get_min_width()))
end
},
{
label = "Hide on Startup",
description = "Show or hide the treeview on startup.",
path = "visible",
type = "toggle",
default = false,
on_apply = function(value)
view.visible = not value
end
}
}
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-- Return the treeview with toolbar and contextmenu to allow
-- user or plugin modifications
view.toolbar = toolbar_view
view.contextmenu = menu
return view