Search user interface using widgets (#168)

* added search_ui
* support treeview find in directory
* added support for lua pattern replace
* use new widgets animation system and other fixes
* clear results when changing options
* adapted to changes on lite-xl/lite-xl#1232
* added bottom layout and made it default
* added option to position on top
* updated to use new widgets path
* added search_ui to manifest

3 files changed, 988 insertions, 0 deletions

diff --git a/README.md b/README.md
index ea53879..4b2baf9 100644
--- a/README.md
+++ b/README.md
@@ -187,6 +187,7 @@ but only with a `url` must provide a `checksum` that matches the existing plugin
 | [`regexreplacepreview`](plugins/regexreplacepreview.lua?raw=1)                                                 | Allows for you to write a regex and its replacement in one go, and live preview the results.                                                                                                                                                                                                     |
 | [`restoretabs`](plugins/restoretabs.lua?raw=1)                                                                 | Keep a list of recently closed tabs, and restore the tab in order on ctrl+shift+t.                                                                                                                                                                                                               |
 | [`scalestatus`](plugins/scalestatus.lua?raw=1)                                                                 | Displays current scale (zoom) in status view (depends on scale plugin)                                                                                                                                                                                                                           |
+| [`search_ui`](plugins/search_ui.lua?raw=1)                                                                     | Alternative interface to find/replace and project search using widgets                                                                                                                                                                                                                           |
 | [`select_colorscheme`](plugins/select_colorscheme.lua?raw=1)                                                   | Select a color theme, like VScode, Sublime Text.(plugin saves changes)                                                                                                                                                                                                                           |
 | [`selectionhighlight`](plugins/selectionhighlight.lua?raw=1)                                                   | Highlights regions of code that match the current selection *([screenshot](https://user-images.githubusercontent.com/3920290/80710883-5f597c80-8ae7-11ea-97f0-76dfacc08439.png))*                                                                                                                |
 | [`settings`](plugins/settings.lua?raw=1)                                                                       | Provides a GUI to manage core and plugin settings, bindings and select color theme *([video](https://user-images.githubusercontent.com/1702572/169743674-ececae24-f6b7-4ff2-bfa2-c4762cd327d9.mp4))*. (depends on [`widget`](https://github.com/lite-xl/lite-xl-widgets))                        |
diff --git a/manifest.json b/manifest.json
index 0133d7b..bca7478 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1046,6 +1046,14 @@
       "mod_version": "3"
     },
     {
+      "description": "Friendlier search and replace user interface using Widgets.",
+      "version": "0.1",
+      "path": "plugins/search_ui.lua",
+      "id": "search_ui",
+      "mod_version": "3",
+      "dependencies": { "widget": {} }
+    },
+    {
       "description": "Select a color theme, like VScode, Sublime Text.(plugin saves changes)",
       "version": "0.1",
       "path": "plugins/select_colorscheme.lua",
diff --git a/plugins/search_ui.lua b/plugins/search_ui.lua
new file mode 100644
index 0000000..e030184
--- /dev/null
+++ b/plugins/search_ui.lua
@@ -0,0 +1,979 @@
+-- mod-version:3
+--
+-- Replacement for the find/replace and project search CommandView
+---interface using Widgets with some extra features.
+-- @copyright Jefferson Gonzalez <jgmdev@gmail.com>
+-- @license MIT
+--
+local core = require "core"
+local config = require "core.config"
+local common = require "core.common"
+local command = require "core.command"
+local keymap = require "core.keymap"
+local search = require "core.doc.search"
+local projectsearch = require "plugins.projectsearch"
+local CommandView = require "core.commandview"
+local DocView = require "core.docview"
+local Widget = require "libraries.widget"
+local Button = require "libraries.widget.button"
+local CheckBox = require "libraries.widget.checkbox"
+local Line = require "libraries.widget.line"
+local Label = require "libraries.widget.label"
+local TextBox = require "libraries.widget.textbox"
+local SelectBox = require "libraries.widget.selectbox"
+local FilePicker = require "libraries.widget.filepicker"
+
+---@class config.plugins.search_ui
+---@field replace_core_find boolean
+---@field position "right" | "bottom"
+config.plugins.search_ui = common.merge({
+  replace_core_find = true,
+  position = "bottom",
+  config_spec = {
+    name = "Search User Interface",
+    {
+      label = "Replace Core Find",
+      description = "Replaces the core find view when using the find shortcut.",
+      path = "replace_core_find",
+      type = "toggle",
+      default = true
+    },
+    {
+      label = "Position",
+      description = "Location of search interface.",
+      path = "position",
+      type = "selection",
+      default = "bottom",
+      values = {
+        { "Top", "top" },
+        { "Right", "right" },
+        { "Bottom", "bottom" }
+      }
+    }
+  }
+}, config.plugins.search_ui)
+
+---@type core.docview
+local doc_view = nil
+
+---@type widget
+local widget = Widget(nil, false)
+widget.name = "Search and Replace"
+widget:set_border_width(0)
+widget.scrollable = true
+widget:hide()
+widget.init_size = true
+
+---@type widget.label
+local label = Label(widget, "Find and Replace")
+label:set_position(10, 10)
+
+---@type widget.line
+local line = Line(widget)
+line:set_position(0, label:get_bottom() + 10)
+
+---@type widget.textbox
+local findtext = TextBox(widget, "", "search...")
+findtext:set_position(10, line:get_bottom() + 10)
+findtext:set_tooltip("Text to search")
+
+---@type widget.textbox
+local replacetext = TextBox(widget, "", "replacement...")
+replacetext:set_position(10, findtext:get_bottom() + 10)
+replacetext:set_tooltip("Text to replace")
+
+---@type widget.button
+local findprev = Button(widget, "")
+findprev:set_icon("<")
+findprev:set_position(10, replacetext:get_bottom() + 10)
+findprev:set_tooltip("Find previous")
+
+---@type widget.button
+local findnext = Button(widget, "")
+findnext:set_icon(">")
+findnext:set_position(findprev:get_right() + 5, replacetext:get_bottom() + 10)
+findnext:set_tooltip("Find next")
+
+---@type widget.button
+local findproject = Button(widget, "Find")
+findproject:set_icon("L")
+findproject:set_position(findprev:get_right() + 5, replacetext:get_bottom() + 10)
+findproject:set_tooltip("Find in project")
+findproject:hide()
+
+---@type widget.button
+local replace = Button(widget, "Replace")
+replace:set_position(10, findnext:get_bottom() + 10)
+replace:set_tooltip("Replace all matching results")
+
+---@type widget.line
+local line_options = Line(widget)
+line_options:set_position(0, replace:get_bottom() + 10)
+
+---@type widget.checkbox
+local insensitive = CheckBox(widget, "Insensitive")
+insensitive:set_position(10, line_options:get_bottom() + 10)
+insensitive:set_tooltip("Case insensitive search")
+insensitive:set_checked(true)
+
+---@type widget.checkbox
+local patterncheck = CheckBox(widget, "Pattern")
+patterncheck:set_position(10, insensitive:get_bottom() + 10)
+patterncheck:set_tooltip("Treat search text as a lua pattern")
+
+---@type widget.checkbox
+local regexcheck = CheckBox(widget, "Regex")
+regexcheck:set_position(10, patterncheck:get_bottom() + 10)
+regexcheck:set_tooltip("Treat search text as a regular expression")
+
+---@type widget.checkbox
+local replaceinselection = CheckBox(widget, "Replace in Selection")
+replaceinselection:set_position(10, regexcheck:get_bottom() + 10)
+replaceinselection:set_tooltip("Perform replace only on selected text")
+
+---@type widget.selectbox
+local scope = SelectBox(widget, "scope")
+scope:set_position(10, regexcheck:get_bottom() + 10)
+scope:add_option("current file")
+scope:add_option("project files")
+scope:set_selected(1)
+
+---@type widget.filepicker
+local filepicker = FilePicker(widget)
+filepicker:set_mode(FilePicker.mode.DIRECTORY)
+filepicker:set_position(10, scope:get_bottom() + 10)
+filepicker:set_tooltip("Directory to perform the search")
+filepicker:hide()
+
+---@type widget.line
+local statusline = Line(widget)
+statusline:set_position(0, scope:get_bottom() + 10)
+
+---@type widget.label
+local status = Label(widget, "")
+status:set_position(10, statusline:get_bottom() + 10)
+
+--------------------------------------------------------------------------------
+-- Helper class to keep track of amount of matches and display on status label
+--------------------------------------------------------------------------------
+---@class plugins.search_ui.result
+---@field line integer
+---@field col integer
+
+---@class plugins.search_ui.results
+---@field text string
+---@field matches plugins.search_ui.result[]
+---@field doc core.doc?
+local Results = {
+  text = "",
+  matches = {},
+  doc = nil,
+  prev_search_id = 0
+}
+
+---@param text string
+---@param doc core.doc
+function Results:find(text, doc, force)
+  if self.text == text and self.doc == doc and not force then
+    self:set_status()
+    return
+  end
+
+  -- disable previous search thread
+  if self.prev_search_id > 0 and core.threads[self.prev_search_id] then
+    core.threads[self.prev_search_id] = {
+      cr = coroutine.create(function() end), wake = 0
+    }
+  end
+
+  self.text = text
+  self.doc = doc
+
+  local search_func
+
+  -- regex search
+  if regexcheck:is_checked() then
+    local regex_find_offsets = regex.match
+    if regex.find_offsets then
+      regex_find_offsets = regex.find_offsets
+    end
+    local pattern = regex.compile(
+      findtext:get_text(),
+      insensitive:is_checked() and "im" or "m"
+    )
+    if not pattern then return end
+    search_func = function(line_text)
+      ---@cast line_text string
+      local results = nil
+      local offsets = {regex_find_offsets(pattern, line_text)}
+      if offsets[1] then
+        results = {}
+        for i=1, #offsets, 2 do
+          table.insert(results, offsets[i])
+        end
+      end
+      return results
+    end
+  -- plain or pattern search
+  else
+    local no_case = insensitive:is_checked()
+    local is_plain = not patterncheck:is_checked()
+    if is_plain and no_case then
+      text = text:ulower()
+    end
+    search_func = function(line_text)
+      ---@cast line_text string
+      if is_plain and no_case then
+        line_text = line_text:ulower()
+      end
+      local results = nil
+      local col1, col2 = line_text:find(text, 1, is_plain)
+      if col1 then
+        results = {}
+        table.insert(results, col1)
+        while col1 do
+          col1, col2 = line_text:find(text, col2+1, is_plain)
+          if col1 then
+            table.insert(results, col1)
+          end
+        end
+      end
+      return results
+    end
+  end
+
+  self.prev_search_id = core.add_thread(function()
+    self.matches = {}
+    local lines_count = #doc.lines
+    for i=1, lines_count do
+      local offsets = search_func(doc.lines[i])
+      if offsets then
+        for _, col in ipairs(offsets) do
+          table.insert(self.matches, {line = i, col = col})
+        end
+      end
+      if i % 100 == 0 then
+        coroutine.yield()
+      end
+    end
+    self:set_status()
+  end)
+end
+
+---@return integer
+function Results:current()
+  if not self.doc then return 0 end
+  local line1, col1, line2, col2 = self.doc:get_selection()
+  if line1 == line2 and col1 == col2 then return 0 end
+  local line = math.min(line1, line2)
+  local col = math.min(col1, col2)
+  if self.matches and #self.matches > 0 then
+    for i, result in ipairs(self.matches) do
+      if result.line == line and result.col == col then
+        return i
+      end
+    end
+  end
+  return 0
+end
+
+function Results:clear()
+  self.text = ""
+  self.matches = {}
+  self.doc = nil
+  status:set_label("")
+end
+
+function Results:set_status()
+  local current = self:current()
+  local total = self.matches and #self.matches or 0
+  if total > 0 then
+    status:set_label(
+      "Result: " .. tostring(current .. " of " .. tostring(total))
+    )
+  else
+    status:set_label("")
+  end
+end
+
+--------------------------------------------------------------------------------
+-- Helper functions
+--------------------------------------------------------------------------------
+local function view_is_open(target_view)
+  if not target_view then return false end
+  local found = false
+  for _, view in ipairs(core.root_view.root_node:get_children()) do
+    if view == target_view then
+      found = true
+      break
+    end
+  end
+  return found
+end
+
+local function toggle_scope(idx, not_set)
+  if not not_set then scope:set_selected(idx) end
+
+  if idx == 1 then
+    replacetext:show()
+    findnext:show()
+    findprev:show()
+    replace:show()
+    patterncheck:show()
+    replaceinselection:show()
+    findproject:hide()
+    filepicker:hide()
+
+    if view_is_open(doc_view) and findtext:get_text() ~= "" then
+      Results:find(findtext:get_text(), doc_view.doc)
+    else
+      Results:clear()
+    end
+  else
+    replacetext:hide()
+    findnext:hide()
+    findprev:hide()
+    replace:hide()
+    patterncheck:hide()
+    replaceinselection:hide()
+    findproject:show()
+    filepicker:show()
+
+    Results:clear()
+  end
+end
+
+local function project_search()
+  if findtext:get_text() == "" then return end
+  if not regexcheck:is_checked() then
+    projectsearch.search_plain(
+      findtext:get_text(), filepicker:get_path(), insensitive:is_checked()
+    )
+  else
+    projectsearch.search_regex(
+      findtext:get_text(), filepicker:get_path(), insensitive:is_checked()
+    )
+  end
+  command.perform "search-replace:hide"
+end
+
+local find_enabled = true
+local function find(reverse)
+  if
+    not view_is_open(doc_view) or findtext:get_text() == "" or not find_enabled
+  then
+    Results:clear()
+    return
+  end
+
+  if core.last_active_view and core.last_active_view:is(DocView) then
+    doc_view = core.last_active_view
+  end
+
+  local doc = doc_view.doc
+  local cline1, ccol1, cline2, ccol2 = doc:get_selection()
+  local line, col = cline1, ccol1
+  if reverse and ccol2 < ccol1 then
+    col = ccol2
+  end
+
+  local opt = {
+    wrap = true,
+    no_case = insensitive:is_checked(),
+    pattern = patterncheck:is_checked(),
+    regex = regexcheck:is_checked(),
+    reverse = reverse
+  }
+
+  if opt.regex and not regex.compile(findtext:get_text()) then
+    return
+  end
+
+  status:set_label("")
+
+  core.try(function()
+    local line1, col1, line2, col2 = search.find(
+      doc, line, col, findtext:get_text(), opt
+    )
+
+    local current_text = doc:get_text(
+      table.unpack({ doc:get_selection() })
+    )
+
+    if opt.no_case and not opt.regex and not opt.pattern then
+      current_text = current_text:ulower()
+    end
+
+    if line1 then
+      local text = findtext:get_text()
+      if opt.no_case and not opt.regex and not opt.pattern then
+        text = text:ulower()
+      end
+      if reverse or (current_text == text or current_text == "") then
+        doc:set_selection(line1, col2, line2, col1)
+      else
+        doc:set_selection(line1, col1, line2, col2)
+      end
+      doc_view:scroll_to_line(line1, true)
+      Results:find(text, doc)
+    end
+  end)
+end
+
+local function find_replace()
+  if core.last_active_view:is(DocView) then
+    doc_view = core.last_active_view
+  end
+  local doc = doc_view.doc
+
+  if not replaceinselection:is_checked() then
+    local line1, col1, line2, col2 = doc:get_selection()
+    if line1 ~= line2 or col1 ~= col2 then
+      doc:set_selection(line1, col1)
+    end
+  end
+
+  local old = findtext:get_text()
+  local new = replacetext:get_text()
+
+  local results = doc:replace(function(text)
+    if not regexcheck:is_checked() then
+      if not patterncheck:is_checked() then
+        return text:gsub(old:gsub("%W", "%%%1"), new:gsub("%%", "%%%%"), nil)
+      else
+        return text:gsub(old, new)
+      end
+    end
+    local result, matches = regex.gsub(regex.compile(old, "m"), text, new)
+    if type(matches) == "table" then
+      return result, #matches
+    end
+    return result, matches
+  end)
+
+  local n = 0
+  for _,v in pairs(results) do
+    n = n + v
+  end
+
+  status:set_label(string.format("Total Replaced: %d", n))
+end
+
+local inside_node = false
+local current_node = nil
+local current_position = ""
+
+local function add_to_node()
+  if not inside_node or current_position ~= config.plugins.search_ui.position then
+    if
+      current_position ~= ""
+      and
+      current_position ~= config.plugins.search_ui.position
+    then
+      widget:hide()
+      current_node:remove_view(core.root_view.root_node, widget)
+      core.root_view.root_node:update_layout()
+      widget:set_size(0, 0)
+      widget.init_size = true
+    end
+    local node = core.root_view:get_primary_node()
+    if config.plugins.search_ui.position == "right" then
+      current_node = node:split("right", widget, {x=true}, true)
+      current_position = "right"
+    elseif config.plugins.search_ui.position == "top" then
+      current_node = node:split("up", widget, {y=true}, false)
+      current_position = "top"
+    else
+      current_node = node:split("down", widget, {y=true}, false)
+      current_position = "bottom"
+    end
+    widget:show()
+    inside_node = true
+  end
+end
+
+---Show or hide the search pane.
+---@param av? core.docview
+---@param toggle? boolean
+local function show_find(av, toggle)
+  if
+    not view_is_open(av)
+    and
+    scope:get_selected() == 1
+  then
+    widget:swap_active_child()
+    if config.plugins.search_ui.position == "right" then
+      widget:hide_animated(false, true)
+    else
+      widget:hide_animated(true, false)
+    end
+    return
+  end
+
+  if inside_node and current_position == config.plugins.search_ui.position then
+    if toggle then
+      widget:toggle_visible(true, false, true)
+    else
+      if not widget:is_visible() then
+        if config.plugins.search_ui.position == "right" then
+          widget:show_animated(false, true)
+        else
+          widget:show_animated(true, false)
+        end
+      end
+    end
+  else
+    add_to_node()
+  end
+
+  if widget:is_visible() then
+    status:set_label("")
+
+    widget:swap_active_child(findtext)
+    doc_view = av
+    if view_is_open(doc_view) and doc_view.doc then
+      local doc_text = doc_view.doc:get_text(
+        table.unpack({ doc_view.doc:get_selection() })
+      )
+      if insensitive:is_checked() then doc_text = doc_text:ulower() end
+      local current_text = findtext:get_text()
+      if insensitive:is_checked() then current_text = current_text:ulower() end
+      if doc_text and doc_text ~= "" and current_text ~= doc_text then
+        local original_text = doc_view.doc:get_text(
+          table.unpack({ doc_view.doc:get_selection() })
+        )
+        find_enabled = false
+        findtext:set_text(original_text)
+        find_enabled = true
+      elseif current_text ~= "" and doc_text == "" then
+        if scope:get_selected() == 1 then
+          find(false)
+        end
+      end
+      if findtext:get_text() ~= "" then
+        findtext.textview.doc:set_selection(1, math.huge, 1, 1)
+        if scope:get_selected() == 1 then
+          Results:find(findtext:get_text(), doc_view.doc)
+        else
+          Results:clear()
+        end
+      else
+        Results:clear()
+      end
+    end
+  else
+    widget:swap_active_child()
+    if view_is_open(doc_view) then
+      core.set_active_view(doc_view)
+    end
+  end
+end
+
+--------------------------------------------------------------------------------
+-- Widgets event overrides
+--------------------------------------------------------------------------------
+function findtext:on_change(text)
+  if scope:get_selected() == 1 then
+    find(false)
+  end
+end
+
+function insensitive:on_checked(checked)
+  Results:clear()
+end
+
+function patterncheck:on_checked(checked)
+  if checked then
+    regexcheck:set_checked(false)
+  end
+  Results:clear()
+end
+
+function regexcheck:on_checked(checked)
+  if checked then
+    patterncheck:set_checked(false)
+  end
+  Results:clear()
+end
+
+function scope:on_selected(idx)
+  toggle_scope(idx, true)
+  if not view_is_open(doc_view) and idx == 1 then
+    command.perform "search-replace:hide"
+  end
+end
+
+function findnext:on_click() find(false) end
+function findprev:on_click() find(true) end
+function findproject:on_click() project_search() end
+function replace:on_click() find_replace() end
+
+---@param self widget
+local function update_size(self)
+  if config.plugins.search_ui.position == "right" then
+    if scope:get_selected() == 1 then
+      if self.size.x < replace:get_right() + replace:get_width() / 2 then
+        self.size.x = replace:get_right() + replace:get_width() / 2
+      end
+    else
+      if self.size.x < findproject:get_right() + findproject:get_width() * 2 then
+        self.size.x = findproject:get_right() + findproject:get_width() * 2
+      end
+    end
+  else
+    self:set_size(nil, self:get_real_height() + 10)
+  end
+end
+
+---@param self widget
+local function update_right_positioning(self)
+  scope:show()
+  label:show()
+  status:show()
+  line_options:show()
+  label:set_label("Find and Replace")
+
+  label:set_position(10, 10)
+  line:set_position(0, label:get_bottom() + 10)
+  findtext:set_position(10, line:get_bottom() + 10)
+  findtext.size.x = self.size.x - 20
+
+  if scope:get_selected() == 1 then
+    replacetext:set_position(10, findtext:get_bottom() + 10)
+    replacetext.size.x = self.size.x - 20
+    findprev:set_position(10, replacetext:get_bottom() + 10)
+    findnext:set_position(findprev:get_right() + 5, replacetext:get_bottom() + 10)
+    replace:set_position(findnext:get_right() + 5, replacetext:get_bottom() + 10)
+    line_options:set_position(0, replace:get_bottom() + 10)
+  else
+    findproject:set_position(10, findtext:get_bottom() + 10)
+    replace:set_position(findproject:get_right() + 5, replacetext:get_bottom() + 10)
+    line_options:set_position(0, findproject:get_bottom() + 10)
+  end
+
+  insensitive:set_position(10, line_options:get_bottom() + 10)
+  if scope:get_selected() == 1 then
+    patterncheck:set_position(10, insensitive:get_bottom() + 10)
+    regexcheck:set_position(10, patterncheck:get_bottom() + 10)
+    replaceinselection:set_position(10, regexcheck:get_bottom() + 10)
+    scope:set_position(10, replaceinselection:get_bottom() + 10)
+  else
+    regexcheck:set_position(10, insensitive:get_bottom() + 10)
+    scope:set_position(10, regexcheck:get_bottom() + 10)
+  end
+
+  scope:set_size(self.size.x - 20)
+  if scope:get_selected() == 1 then
+    statusline:set_position(0, scope:get_bottom() + 30)
+  else
+    filepicker:set_position(10, scope:get_bottom() + 10)
+    filepicker:set_size(self.size.x - 20, nil)
+    statusline:set_position(0, filepicker:get_bottom() + 30)
+  end
+
+  status:set_position(10, statusline:get_bottom() + 10)
+  if status.label == "" then
+    statusline:hide()
+  else
+    statusline:show()
+  end
+
+  if self.init_size then
+    update_size(self)
+    self.init_size = false
+    self:show_animated(false, true)
+  end
+
+  add_to_node()
+end
+
+---@param self widget
+local function update_bottom_positioning(self)
+  scope:hide()
+  statusline:hide()
+
+  if scope:get_selected() == 1 then
+    label:hide()
+    status:show()
+    status:set_position(10, 10)
+    replaceinselection:set_position(self.size.x - replaceinselection:get_width() - 10, 10)
+    regexcheck:set_position(replaceinselection:get_position().x - 10 - regexcheck:get_width(), 10)
+    patterncheck:set_position(regexcheck:get_position().x - 10  - patterncheck:get_width(), 10)
+    insensitive:set_position(patterncheck:get_position().x - 10 - insensitive:get_width(), 10)
+    line:set_position(0, status:get_bottom() + 10)
+  else
+    label:show()
+    status:hide()
+    label:set_label("Find in Directory")
+    label:set_position(10, 10)
+    regexcheck:set_position(self.size.x - regexcheck:get_width() - 10, 10)
+    insensitive:set_position(regexcheck:get_position().x - 10 - insensitive:get_width(), 10)
+    line:set_position(0, label:get_bottom() + 10)
+  end
+
+  if scope:get_selected() == 1 then
+    findtext:set_position(10, line:get_bottom() + 10)
+    findtext.size.x = self.size.x - 40 - findprev:get_width() - findnext:get_width()
+    findnext:set_position(self.size.x - 10 - findnext:get_width(), line:get_bottom() + 10)
+    findprev:set_position(findnext:get_position().x - 10 - findprev:get_width(), line:get_bottom() + 10)
+    replacetext:set_position(10, findtext:get_bottom() + 10)
+    replacetext.size.x = findtext.size.x
+    replace:set_position(self.size.x - 15 - replace:get_width(), findtext:get_bottom() + 10)
+    replace.size.x = findprev:get_width() + findnext:get_width() + 10
+    line_options:hide()
+  else
+    findtext:set_position(10, line:get_bottom() + 10)
+    findtext.size.x = self.size.x - 30 - findproject:get_width()
+    findproject:set_position(self.size.x - 10 - findproject:get_width(), line:get_bottom() + 10)
+    replace:set_position(findproject:get_right() + 5, replacetext:get_bottom() + 10)
+    line_options:show()
+    line_options:set_position(0, findproject:get_bottom() + 10)
+    filepicker:set_position(10, line_options:get_bottom() + 10)
+    filepicker:set_size(self.size.x - 20, nil)
+  end
+
+  if self.init_size then
+    update_size(self)
+    self.init_size = false
+    self:show_animated(true, false)
+  end
+
+  add_to_node()
+end
+
+-- reposition items on scale changes
+function widget:update()
+  if Widget.update(self) then
+    if config.plugins.search_ui.position == "right" then
+      update_right_positioning(self)
+    else
+      update_bottom_positioning(self)
+    end
+  end
+end
+
+function widget:on_scale_change(...)
+  Widget.on_scale_change(self, ...)
+  update_size(self)
+end
+
+--------------------------------------------------------------------------------
+-- Override set_active_view to keep track of currently active docview
+--------------------------------------------------------------------------------
+local core_set_active_view = core.set_active_view
+function core.set_active_view(...)
+  core_set_active_view(...)
+  local view = core.next_active_view or core.active_view
+  if
+    view ~= doc_view
+    and
+    widget:is_visible()
+    and
+    view:extends(DocView)
+    and
+    view ~= findtext.textview
+    and
+    view ~= replacetext.textview
+    and
+    view.doc.filename
+  then
+    doc_view = view
+    Results:clear()
+  end
+end
+
+--------------------------------------------------------------------------------
+-- Register commands
+--------------------------------------------------------------------------------
+command.add(
+  function()
+    if core.active_view:is(DocView) then
+      return true, core.active_view
+    elseif widget:is_visible() then
+      return true, doc_view
+    elseif scope:get_selected() == 2 then
+      return true, nil
+    end
+    return false
+  end,
+  {
+    ["search-replace:show"] = function(av)
+      show_find(av, false)
+    end,
+
+    ["search-replace:toggle"] = function(av)
+      show_find(av, true)
+    end
+  }
+)
+
+command.add(function() return widget:is_visible() and not core.active_view:is(CommandView) end, {
+  ["search-replace:hide"] = function()
+    widget:swap_active_child()
+    if config.plugins.search_ui.position == "right" then
+      widget:hide_animated(false, true)
+    else
+      widget:hide_animated(true, false)
+    end
+    if view_is_open(doc_view) then
+      core.set_active_view(doc_view)
+    end
+  end,
+
+  ["search-replace:file-search"] = function()
+    toggle_scope(1)
+    command.perform "search-replace:show"
+  end,
+
+  ["search-replace:next"] = function()
+    find(false)
+  end,
+
+  ["search-replace:previous"] = function()
+    find(true)
+  end,
+
+  ["search-replace:toggle-sensitivity"] = function()
+    insensitive:set_checked(not insensitive:is_checked())
+    Results:clear()
+  end,
+
+  ["search-replace:toggle-regex"] = function()
+    regexcheck:set_checked(not regexcheck:is_checked())
+    Results:clear()
+  end,
+
+  ["search-replace:toggle-in-selection"] = function()
+    replaceinselection:set_checked(not replaceinselection:is_checked())
+  end
+})
+
+command.add(
+  function()
+    return widget:is_visible()
+      and
+      not core.active_view:is(CommandView)
+      and
+      (
+        widget.child_active == findtext
+        or
+        widget.child_active == replacetext
+      )
+  end,
+  {
+    ["search-replace:perform"] = function()
+      if scope:get_selected() == 1 then
+        if widget.child_active == findtext then
+          ---@type core.doc
+          local doc = doc_view.doc
+          local line1, col1, line2, col2 = doc:get_selection()
+          -- correct cursor position to properly search next result
+          if line1 ~= line2 or col1 ~= col2 then
+            doc:set_selection(
+              line1,
+              math.max(col1, col2),
+              line2,
+              math.min(col1, col2)
+            )
+          end
+          find(false)
+        else
+          find_replace()
+        end
+      else
+        project_search()
+      end
+    end
+  }
+)
+
+--------------------------------------------------------------------------------
+-- Override core find/replace commands
+--------------------------------------------------------------------------------
+local find_replace_find = command.map["find-replace:find"].perform
+command.map["find-replace:find"].perform = function(...)
+  if config.plugins.search_ui.replace_core_find then
+    toggle_scope(1)
+    command.perform "search-replace:show"
+  else
+    find_replace_find(...)
+  end
+end
+
+local find_replace_replace = command.map["find-replace:replace"].perform
+command.map["find-replace:replace"].perform = function(...)
+  if config.plugins.search_ui.replace_core_find then
+    toggle_scope(1)
+    command.perform "search-replace:show"
+  else
+    find_replace_replace(...)
+  end
+end
+
+local find_replace_repeat = command.map["find-replace:repeat-find"].perform
+command.map["find-replace:repeat-find"].perform = function(...)
+  if
+    widget:is_visible()
+    or
+    (config.plugins.search_ui.replace_core_find and findtext:get_text() ~= "")
+  then
+    find(false)
+    return
+  end
+  find_replace_repeat(...)
+end
+
+local find_replace_previous = command.map["find-replace:previous-find"].perform
+command.map["find-replace:previous-find"].perform = function(...)
+  if
+    widget:is_visible()
+    or
+    (config.plugins.search_ui.replace_core_find and findtext:get_text() ~= "")
+  then
+    find(true)
+    return
+  end
+  find_replace_previous(...)
+end
+
+local project_search_find = command.map["project-search:find"].perform
+command.map["project-search:find"].perform = function(path)
+  if config.plugins.search_ui.replace_core_find then
+    toggle_scope(2)
+    if path then
+      filepicker:set_path(path)
+    end
+    local av = doc_view
+    if
+      core.active_view:extends(DocView)
+      and
+      core.active_view ~= findtext.textview
+      and
+      core.active_view ~= replacetext.textview
+    then
+      av = core.active_view
+    end
+    show_find(av, false)
+    return
+  end
+  project_search_find(path)
+end
+
+--------------------------------------------------------------------------------
+-- Register keymaps
+--------------------------------------------------------------------------------
+keymap.add {
+  ["alt+h"] = "search-replace:toggle",
+  ["escape"] = "search-replace:hide",
+  ["f3"] = "search-replace:next",
+  ["shift+f3"] = "search-replace:previous",
+  ["return"] = "search-replace:perform",
+  ["shift+return"] = "search-replace:previous",
+  ["ctrl+i"] = "search-replace:toggle-sensitivity",
+  ["ctrl+shift+i"] = "search-replace:toggle-regex",
+  ["ctrl+alt+i"] = "search-replace:toggle-in-selection",
+  ["ctrl+f"] = "search-replace:file-search"
+}
+
+
+return widget