Add initia luakit files

1 files changed, 859 insertions, 0 deletions

diff --git a/.config/luakit/window.lua b/.config/luakit/window.lua
new file mode 100644
index 0000000..5e921d6
--- /dev/null
+++ b/.config/luakit/window.lua
@@ -0,0 +1,859 @@
+------------------
+-- Window class --
+------------------
+
+require "lfs"
+
+-- Window class table
+window = {}
+
+-- List of active windows by window widget
+window.bywidget = setmetatable({}, { __mode = "k" })
+
+-- Widget construction aliases
+local function entry()    return widget{type="entry"}    end
+local function eventbox() return widget{type="eventbox"} end
+local function hbox()     return widget{type="hbox"}     end
+local function label()    return widget{type="label"}    end
+local function notebook() return widget{type="notebook"} end
+local function vbox()     return widget{type="vbox"}     end
+
+-- Build and pack window widgets
+function window.build()
+    -- Create a table for widgets and state variables for a window
+    local w = {
+        win    = widget{type="window"},
+        ebox   = eventbox(),
+        layout = vbox(),
+        paned  = widget{type="vpaned"},
+        tabs   = notebook(),
+        -- Tablist widget
+        tablist = lousy.widget.tablist(),
+        -- Status bar widgets
+        sbar = {
+            layout = hbox(),
+            ebox   = eventbox(),
+            -- Left aligned widgets
+            l = {
+                layout = hbox(),
+                ebox   = eventbox(),
+                uri    = label(),
+                hist   = label(),
+                loaded = label(),
+            },
+            -- Fills space between the left and right aligned widgets
+            sep = eventbox(),
+            -- Right aligned widgets
+            r = {
+                layout = hbox(),
+                ebox   = eventbox(),
+                buf    = label(),
+                ssl    = label(),
+                tabi   = label(),
+                scroll = label(),
+            },
+        },
+
+        -- Vertical menu window widget (completion results, bookmarks, qmarks, ..)
+        menu = lousy.widget.menu(),
+
+        -- Input bar widgets
+        ibar = {
+            layout  = hbox(),
+            ebox    = eventbox(),
+            prompt  = label(),
+            input   = entry(),
+        },
+        closed_tabs = {}
+    }
+
+    -- Assemble window
+    w.ebox.child = w.paned
+    w.paned:pack1(w.layout)
+    w.win.child = w.ebox
+
+    -- Pack tablist
+    w.layout:pack(w.tablist.widget)
+
+    -- Pack notebook
+    w.layout:pack(w.tabs, { expand = true, fill = true })
+
+    -- Pack left-aligned statusbar elements
+    local l = w.sbar.l
+    l.layout:pack(l.uri)
+    l.layout:pack(l.hist)
+    l.layout:pack(l.loaded)
+    l.ebox.child = l.layout
+
+    -- Pack right-aligned statusbar elements
+    local r = w.sbar.r
+    r.layout:pack(r.buf)
+    r.layout:pack(r.ssl)
+    r.layout:pack(r.tabi)
+    r.layout:pack(r.scroll)
+    r.ebox.child = r.layout
+
+    -- Pack status bar elements
+    local s = w.sbar
+    s.layout:pack(l.ebox)
+    s.layout:pack(s.sep, { expand = true, fill = true })
+    s.layout:pack(r.ebox)
+    s.ebox.child = s.layout
+    w.layout:pack(s.ebox)
+
+    -- Pack menu widget
+    w.layout:pack(w.menu.widget)
+    w.menu:hide()
+
+    -- Pack input bar
+    local i = w.ibar
+    i.layout:pack(i.prompt)
+    i.layout:pack(i.input, { expand = true, fill = true })
+    i.ebox.child = i.layout
+    w.layout:pack(i.ebox)
+
+    -- Other settings
+    i.input.show_frame = false
+    w.tabs.show_tabs = false
+    l.loaded:hide()
+    l.hist:hide()
+    l.uri.selectable = true
+    r.ssl:hide()
+
+    -- Allows indexing of window struct by window widget
+    window.bywidget[w.win] = w
+
+    return w
+end
+
+-- Table of functions to call on window creation. Normally used to add signal
+-- handlers to the new windows widgets.
+window.init_funcs = {
+    -- Attach notebook widget signals
+    notebook_signals = function (w)
+        w.tabs:add_signal("page-added", function (nbook, view, idx)
+            luakit.idle_add(function ()
+                w:update_tab_count()
+                w:update_tablist()
+                return false
+            end)
+        end)
+        w.tabs:add_signal("switch-page", function (nbook, view, idx)
+            w.view = nil
+            w:set_mode()
+            -- Update widgets after tab switch
+            luakit.idle_add(function ()
+                w:update_tab_count()
+                w:update_win_title()
+                w:update_uri()
+                w:update_progress()
+                w:update_tablist()
+                w:update_buf()
+                w:update_ssl()
+                w:update_hist()
+                return false
+            end)
+        end)
+        w.tabs:add_signal("page-reordered", function (nbook, view, idx)
+            w:update_tab_count()
+            w:update_tablist()
+        end)
+    end,
+
+    last_win_check = function (w)
+        w.win:add_signal("destroy", function ()
+            -- call the quit function if this was the last window left
+            if #luakit.windows == 0 then luakit.quit() end
+            if w.close_win then w:close_win() end
+        end)
+    end,
+
+    key_press_match = function (w)
+        w.win:add_signal("key-press", function (_, mods, key)
+            -- Match & exec a bind
+            local success, match = xpcall(
+                function () return w:hit(mods, key) end,
+                function (err) w:error(debug.traceback(err, 3)) end)
+
+            if success and match then
+                return true
+            end
+        end)
+    end,
+
+    tablist_tab_click = function (w)
+        w.tablist:add_signal("tab-clicked", function (_, index, mods, button)
+            if button == 1 then
+                w.tabs:switch(index)
+                return true
+            elseif button == 2 then
+                w:close_tab(w.tabs[index])
+                return true
+            end
+        end)
+    end,
+
+    apply_window_theme = function (w)
+        local s, i = w.sbar, w.ibar
+
+        -- Set foregrounds
+        for wi, v in pairs({
+            [s.l.uri]    = theme.uri_sbar_fg,
+            [s.l.hist]   = theme.hist_sbar_fg,
+            [s.l.loaded] = theme.sbar_loaded_fg,
+            [s.r.buf]    = theme.buf_sbar_fg,
+            [s.r.tabi]   = theme.tabi_sbar_fg,
+            [s.r.scroll] = theme.scroll_sbar_fg,
+            [i.prompt]   = theme.prompt_ibar_fg,
+            [i.input]    = theme.input_ibar_fg,
+        }) do wi.fg = v end
+
+        -- Set backgrounds
+        for wi, v in pairs({
+            [s.l.ebox]   = theme.sbar_bg,
+            [s.r.ebox]   = theme.sbar_bg,
+            [s.sep]      = theme.sbar_bg,
+            [s.ebox]     = theme.sbar_bg,
+            [i.ebox]     = theme.ibar_bg,
+            [i.input]    = theme.input_ibar_bg,
+        }) do wi.bg = v end
+
+        -- Set fonts
+        for wi, v in pairs({
+            [s.l.uri]    = theme.uri_sbar_font,
+            [s.l.hist]   = theme.hist_sbar_font,
+            [s.l.loaded] = theme.sbar_loaded_font,
+            [s.r.buf]    = theme.buf_sbar_font,
+            [s.r.ssl]    = theme.ssl_sbar_font,
+            [s.r.tabi]   = theme.tabi_sbar_font,
+            [s.r.scroll] = theme.scroll_sbar_font,
+            [i.prompt]   = theme.prompt_ibar_font,
+            [i.input]    = theme.input_ibar_font,
+        }) do wi.font = v end
+    end,
+
+    set_default_size = function (w)
+        local size = globals.default_window_size or "800x600"
+        if string.match(size, "^%d+x%d+$") then
+            w.win:set_default_size(string.match(size, "^(%d+)x(%d+)$"))
+        else
+            warn("E: window.lua: invalid window size: %q", size)
+        end
+    end,
+
+    set_window_icon = function (w)
+        local path = (luakit.dev_paths and os.exists("./extras/luakit.png")) or
+            os.exists("/usr/share/pixmaps/luakit.png")
+        if path then w.win.icon = path end
+    end,
+
+    clear_urgency_hint = function (w)
+        w.win:add_signal("focus", function ()
+            w.win.urgency_hint = false
+        end)
+    end,
+}
+
+-- Helper functions which operate on the window widgets or structure.
+window.methods = {
+    -- Wrapper around the bind plugin's hit method
+    hit = function (w, mods, key, opts)
+        local opts = lousy.util.table.join(opts or {}, {
+            enable_buffer = w:is_mode("normal"),
+            buffer = w.buffer,
+        })
+
+        local caught, newbuf = lousy.bind.hit(w, w.binds, mods, key, opts)
+        if w.win then -- Check binding didn't cause window to exit
+            w.buffer = newbuf
+            w:update_buf()
+        end
+        return caught
+    end,
+
+    -- Wrapper around the bind plugin's match_cmd method
+    match_cmd = function (w, buffer)
+        return lousy.bind.match_cmd(w, get_mode("command").binds, buffer)
+    end,
+
+    -- enter command or characters into command line
+    enter_cmd = function (w, cmd, opts)
+        w:set_mode("command")
+        w:set_input(cmd, opts)
+    end,
+
+    -- run command as if typed into the command line
+    run_cmd = function (w, cmd, opts)
+        w:enter_cmd(cmd, opts)
+        w:activate()
+    end,
+
+    -- insert a string into the command line at the current cursor position
+    insert_cmd = function (w, str)
+        if not str then return end
+        local i = w.ibar.input
+        local text = i.text
+        local pos = i.position
+        local left, right = string.sub(text, 1, pos), string.sub(text, pos+1)
+        i.text = left .. str .. right
+        i.position = pos + #str
+    end,
+
+    -- Emulates pressing the Return key in input field
+    activate = function (w)
+        w.ibar.input:emit_signal("activate")
+    end,
+
+    del_word = function (w)
+        local i = w.ibar.input
+        local text = i.text
+        local pos = i.position
+        if text and #text > 1 and pos > 1 then
+            local left, right = string.sub(text, 2, pos), string.sub(text, pos+1)
+            if not string.find(left, "%s") then
+                left = ""
+            elseif string.find(left, "%w+%s*$") then
+                left = string.sub(left, 0, string.find(left, "%w+%s*$") - 1)
+            elseif string.find(left, "%W+%s*$") then
+                left = string.sub(left, 0, string.find(left, "%W+%s*$") - 1)
+            end
+            i.text =  string.sub(text, 1, 1) .. left .. right
+            i.position = #left + 1
+        end
+    end,
+
+    del_line = function (w)
+        local i = w.ibar.input
+        if not string.match(i.text, "^[:/?]$") then
+            i.text = string.sub(i.text, 1, 1)
+            i.position = -1
+        end
+    end,
+
+    del_backward_char = function (w)
+        local i = w.ibar.input
+        local text = i.text
+        local pos = i.position
+
+        if pos > 1 then
+            i.text = string.sub(text, 0, pos - 1) .. string.sub(text, pos + 1)
+            i.position = pos - 1
+        end
+    end,
+
+    del_forward_char = function (w)
+        local i = w.ibar.input
+        local text = i.text
+        local pos = i.position
+
+        i.text = string.sub(text, 0, pos) .. string.sub(text, pos + 2)
+        i.position = pos
+    end,
+
+    beg_line = function (w)
+        local i = w.ibar.input
+        i.position = 1
+    end,
+
+    end_line = function (w)
+        local i = w.ibar.input
+        i.position = -1
+    end,
+
+    forward_char = function (w)
+        local i = w.ibar.input
+        i.position = i.position + 1
+    end,
+
+    backward_char = function (w)
+        local i = w.ibar.input
+        local pos = i.position
+        if pos > 1 then
+            i.position = pos - 1
+        end
+    end,
+
+    forward_word = function (w)
+        local i = w.ibar.input
+        local text = i.text
+        local pos = i.position
+        if text and #text > 1 then
+            local right = string.sub(text, pos+1)
+            if string.find(right, "%w+") then
+                local _, move = string.find(right, "%w+")
+                i.position = pos + move
+            end
+        end
+    end,
+
+    backward_word = function (w)
+        local i = w.ibar.input
+        local text = i.text
+        local pos = i.position
+        if text and #text > 1 and pos > 1 then
+            local left = string.reverse(string.sub(text, 2, pos))
+            if string.find(left, "%w+") then
+                local _, move = string.find(left, "%w+")
+                i.position = pos - move
+            end
+        end
+    end,
+
+    -- Shows a notification until the next keypress of the user.
+    notify = function (w, msg, set_mode)
+        if set_mode ~= false then w:set_mode() end
+        w:set_prompt(msg, { fg = theme.notif_fg, bg = theme.notif_bg })
+    end,
+
+    warning = function (w, msg, set_mode)
+        if set_mode ~= false then w:set_mode() end
+        w:set_prompt(msg, { fg = theme.warning_fg, bg = theme.warning_bg })
+    end,
+
+    error = function (w, msg, set_mode)
+        if set_mode ~= false then w:set_mode() end
+        w:set_prompt("Error: "..msg, { fg = theme.error_fg, bg = theme.error_bg })
+    end,
+
+    -- Set and display the prompt
+    set_prompt = function (w, text, opts)
+        local prompt, ebox, opts = w.ibar.prompt, w.ibar.ebox, opts or {}
+        prompt:hide()
+        -- Set theme
+        fg, bg = opts.fg or theme.ibar_fg, opts.bg or theme.ibar_bg
+        if prompt.fg ~= fg then prompt.fg = fg end
+        if ebox.bg ~= bg then ebox.bg = bg end
+        -- Set text or remain hidden
+        if text then
+            prompt.text = lousy.util.escape(text)
+            prompt:show()
+        end
+    end,
+
+    -- Set display and focus the input bar
+    set_input = function (w, text, opts)
+        local input, opts = w.ibar.input, opts or {}
+        input:hide()
+        -- Set theme
+        fg, bg = opts.fg or theme.ibar_fg, opts.bg or theme.ibar_bg
+        if input.fg ~= fg then input.fg = fg end
+        if input.bg ~= bg then input.bg = bg end
+        -- Set text or remain hidden
+        if text then
+            input.text = ""
+            input:show()
+            input:focus()
+            input.text = text
+            input.position = opts.pos or -1
+        end
+    end,
+
+    -- GUI content update functions
+    update_tab_count = function (w)
+        w.sbar.r.tabi.text = string.format("[%d/%d]", w.tabs:current(), w.tabs:count())
+    end,
+
+    update_win_title = function (w)
+        local uri, title = w.view.uri, w.view.title
+        title = (title or "luakit") .. ((uri and " - " .. uri) or "")
+        local max = globals.max_title_len or 80
+        if #title > max then title = string.sub(title, 1, max) .. "..." end
+        w.win.title = title
+    end,
+
+    update_uri = function (w, link)
+        w.sbar.l.uri.text = lousy.util.escape((link and "Link: " .. link)
+            or (w.view and w.view.uri) or "about:blank")
+    end,
+
+    update_progress = function (w)
+        local p = w.view.progress
+        local loaded = w.sbar.l.loaded
+        if not w.view:loading() or p == 1 then
+            loaded:hide()
+        else
+            loaded:show()
+            loaded.text = string.format("(%d%%)", p * 100)
+        end
+    end,
+
+    update_scroll = function (w)
+        local scroll, label = w.view.scroll, w.sbar.r.scroll
+        local y, max, text = scroll.y, scroll.ymax
+        if     max == 0   then text = "All"
+        elseif y   == 0   then text = "Top"
+        elseif y   == max then text = "Bot"
+        else text = string.format("%2d%%", (y / max) * 100)
+        end
+        if label.text ~= text then label.text = text end
+    end,
+
+    update_ssl = function (w)
+        local trusted = w.view:ssl_trusted()
+        local ssl = w.sbar.r.ssl
+        if trusted ~= nil and not w.checking_ssl then
+            ssl.fg = theme.notrust_fg
+            ssl.text = "(nocheck)"
+            ssl:show()
+        elseif trusted == true then
+            ssl.fg = theme.trust_fg
+            ssl.text = "(trust)"
+            ssl:show()
+        elseif trusted == false then
+            ssl.fg = theme.notrust_fg
+            ssl.text = "(notrust)"
+            ssl:show()
+        else
+            ssl:hide()
+        end
+    end,
+
+    update_hist = function (w)
+        local hist = w.sbar.l.hist
+        local back, forward = w.view:can_go_back(), w.view:can_go_forward()
+        local s = (back and "+" or "") .. (forward and "-" or "")
+        if s ~= "" then
+            hist.text = '['..s..']'
+            hist:show()
+        else
+            hist:hide()
+        end
+    end,
+
+    update_buf = function (w)
+        local buf = w.sbar.r.buf
+        if w.buffer then
+            buf.text = lousy.util.escape(string.format(" %-3s", w.buffer))
+            buf:show()
+        else
+            buf:hide()
+        end
+    end,
+
+    update_binds = function (w, mode)
+        -- Generate the list of active key & buffer binds for this mode
+        w.binds = lousy.util.table.join((get_mode(mode) or {}).binds or {}, get_mode('all').binds or {})
+        -- Clear & hide buffer
+        w.buffer = nil
+        w:update_buf()
+    end,
+
+    update_tablist = function (w)
+        local current = w.tabs:current()
+        local fg, bg, nfg, snfg = theme.tab_fg, theme.tab_bg, theme.tab_ntheme, theme.selected_ntheme
+        local lfg, bfg, gfg = theme.tab_loading_fg, theme.tab_notrust_fg, theme.tab_trust_fg
+        local escape = lousy.util.escape
+        local tabs, tfmt = {}, ' <span foreground="%s">%s</span> %s'
+
+        for i, view in ipairs(w.tabs.children) do
+            -- Get tab number theme
+            local ntheme = nfg
+            if view:loading() then -- Show loading on all tabs
+                ntheme = lfg
+            elseif current == i then -- Show ssl trusted/untrusted on current tab
+                local trusted = view:ssl_trusted()
+                ntheme = snfg
+                if trusted == false or (trusted ~= nil and not w.checking_ssl) then
+                    ntheme = bfg
+                elseif trusted then
+                    ntheme = gfg
+                end
+            end
+            local title = view.title or view.uri or "(Untitled)"
+            tabs[i] = {
+                title = string.format(tfmt, ntheme or fg, i, escape(title)),
+                fg = (current == i and theme.tab_selected_fg) or fg,
+                bg = (current == i and theme.tab_selected_bg) or bg,
+            }
+        end
+
+        if #tabs < 2 then tabs, current = {}, 0 end
+        w.tablist:update(tabs, current)
+    end,
+
+    new_tab = function (w, arg, switch, order)
+        local view
+        -- Use blank tab first
+        if w.has_blank and w.tabs:count() == 1 and w.tabs[1].uri == "about:blank" then
+            view = w.tabs[1]
+        end
+        w.has_blank = nil
+        -- Make new webview widget
+        if not view then
+            view = webview.new(w)
+            -- Get tab order function
+            if not order and taborder then
+                order = (switch == false and taborder.default_bg)
+                    or taborder.default
+            end
+            pos = w.tabs:insert((order and order(w, view)) or -1, view)
+            if switch ~= false then w.tabs:switch(pos) end
+        end
+        -- Load uri or webview history table
+        if type(arg) == "string" then view.uri = arg
+        elseif type(arg) == "table" then view.history = arg end
+        -- Update statusbar widgets
+        w:update_tab_count()
+        w:update_tablist()
+        return view
+    end,
+
+    -- close the current tab
+    close_tab = function (w, view, blank_last)
+        view = view or w.view
+        -- Treat a blank last tab as an empty notebook (if blank_last=true)
+        if blank_last ~= false and w.tabs:count() == 1 then
+            if not view:loading() and view.uri == "about:blank" then return end
+            w:new_tab("about:blank", false)
+            w.has_blank = true
+        end
+        -- Save tab history
+        local tab = {hist = view.history,}
+        -- And relative location
+        local index = w.tabs:indexof(view)
+        if index ~= 1 then tab.after = w.tabs[index-1] end
+        table.insert(w.closed_tabs, tab)
+        view:destroy()
+        w:update_tab_count()
+        w:update_tablist()
+    end,
+
+    close_win = function (w, force)
+        -- Ask plugins if it's OK to close last window
+        if not force and (#luakit.windows == 1) then
+            local emsg = luakit.emit_signal("can-close", w)
+            if emsg then
+                assert(type(emsg) == "string", "invalid exit error message")
+                w:error(string.format("Can't close luakit: %s (force close "
+                    .. "with :q! or :wq!)", emsg))
+                return false
+            end
+        end
+
+        w:emit_signal("close")
+
+        -- Close all tabs
+        while w.tabs:count() ~= 0 do
+            w:close_tab(nil, false)
+        end
+
+        -- Destroy tablist
+        w.tablist:destroy()
+
+        -- Remove from window index
+        window.bywidget[w.win] = nil
+
+        -- Clear window struct
+        w = setmetatable(w, {})
+
+        -- Recursively remove widgets from window
+        local children = lousy.util.recursive_remove(w.win)
+        -- Destroy all widgets
+        for i, c in ipairs(lousy.util.table.join(children, {w.win})) do
+            if c.hide then c:hide() end
+            c:destroy()
+        end
+
+        -- Remove all window table vars
+        for k, _ in pairs(w) do w[k] = nil end
+
+        -- Quit if closed last window
+        if #luakit.windows == 0 then luakit.quit() end
+    end,
+
+    -- Navigate current view or open new tab
+    navigate = function (w, uri, view)
+        view = view or w.view
+        if view then
+            local js = string.match(uri, "^javascript:(.+)$")
+            if js then
+                return view:eval_js(luakit.uri_decode(js))
+            end
+            view.uri = uri
+        else
+            return w:new_tab(uri)
+        end
+    end,
+
+    -- Save, restart luakit and reload session.
+    restart = function (w)
+        -- Generate luakit launch command.
+        local args = {({string.gsub(luakit.execpath, " ", "\\ ")})[1]}
+        if luakit.verbose then table.insert(args, "-v") end
+        -- Relaunch without libunique bindings?
+        if luakit.nounique then table.insert(args, "-U") end
+
+        -- Get new config path
+        local conf
+        if luakit.confpath ~= "/etc/xdg/luakit/rc.lua" and os.exists(luakit.confpath) then
+            conf = luakit.confpath
+            table.insert(args, string.format("-c %q", conf))
+        end
+
+        -- Check config has valid syntax
+        local cmd = table.concat(args, " ")
+        if luakit.spawn_sync(cmd .. " -k") ~= 0 then
+            return w:error("Cannot restart, syntax error in configuration file"..((conf and ": "..conf) or "."))
+        end
+
+        -- Save session.
+        local wins = {}
+        for _, w in pairs(window.bywidget) do table.insert(wins, w) end
+        session.save(wins)
+
+        -- Replace current process with new luakit instance.
+        luakit.exec(cmd)
+    end,
+
+    -- Intelligent open command which can detect a uri or search argument.
+    search_open = function (w, arg)
+        local lstring = lousy.util.string
+        local match, find = string.match, string.find
+
+        -- Detect blank uris
+        if not arg or match(arg, "^%s*$") then return "about:blank" end
+
+        -- Strip whitespace and split by whitespace into args table
+        local args = lstring.split(lstring.strip(arg))
+
+        -- Guess if first argument is an address, search engine, file
+        if #args == 1 then
+            local uri = args[1]
+            if uri == "about:blank" then return uri end
+
+            -- Check if search engine name
+            if search_engines[uri] then
+                return string.format(search_engines[uri], "")
+            end
+
+            -- Navigate if . or / in uri (I.e. domains, IP's, scheme://)
+            if find(uri, "%.") or find(uri, "/") then return uri end
+
+            -- Navigate if this is a javascript-uri
+            if find(uri, "^javascript:") then return uri end
+
+            -- Valid hostnames to check
+            local hosts = { "localhost" }
+            if globals.load_etc_hosts ~= false then
+                hosts = lousy.util.get_etc_hosts()
+            end
+
+            -- Check hostnames
+            for _, h in pairs(hosts) do
+                if h == uri or match(uri, "^"..h..":%d+$") then return uri end
+            end
+
+            -- Check for file in filesystem
+            if globals.check_filepath ~= false then
+                if lfs.attributes(uri) then return "file://" .. uri end
+            end
+        end
+
+        -- Find search engine (or use search_engines.default)
+        local engine = "default"
+        if args[1] and search_engines[args[1]] then
+            engine = args[1]
+            table.remove(args, 1)
+        end
+
+        -- URI encode search terms
+        local terms = luakit.uri_encode(table.concat(args, " "))
+        return string.format(search_engines[engine], terms)
+    end,
+
+    -- Increase (or decrease) the last found number in the current uri
+    inc_uri = function (w, arg)
+        local uri = string.gsub(w.view.uri, "(%d+)([^0-9]*)$", function (num, rest)
+            return string.format("%0"..#num.."d", tonumber(num) + (arg or 1)) .. rest
+        end)
+        return uri
+    end,
+
+    -- Tab traversing functions
+    next_tab = function (w, n)
+        w.tabs:switch((((n or 1) + w.tabs:current() -1) % w.tabs:count()) + 1)
+    end,
+
+    prev_tab = function (w, n)
+        w.tabs:switch(((w.tabs:current() - (n or 1) -1) % w.tabs:count()) + 1)
+    end,
+
+    goto_tab = function (w, n)
+        if n and (n == -1 or n > 0) then
+            return w.tabs:switch((n <= w.tabs:count() and n) or -1)
+        end
+    end,
+
+    -- For each tab, switches to that tab and calls the given function passing
+    -- it the view contained in the tab.
+    each_tab = function (w, fn)
+        for index = 1, w.tabs:count() do
+            w:goto_tab(index)
+            fn(w.tabs[index])
+        end
+    end,
+
+    -- If argument is form-active or root-active, emits signal. Ignores all
+    -- other signals.
+    emit_form_root_active_signal = function (w, s)
+        if s == "form-active" then
+            w.view:emit_signal("form-active")
+        elseif s == "root-active" then
+            w.view:emit_signal("root-active")
+        end
+    end,
+}
+
+-- Ordered list of class index functions. Other classes (E.g. webview) are able
+-- to add their own index functions to this list.
+window.indexes = {
+    -- Find function in window.methods first
+    function (w, k) return window.methods[k] end
+}
+
+-- Create new window
+function window.new(uris)
+    local w = window.build()
+
+    -- Set window metatable
+    setmetatable(w, {
+        __index = function (_, k)
+            -- Check widget structure first
+            local v = rawget(w, k)
+            if v then return v end
+            -- Call each window index function
+            for _, index in ipairs(window.indexes) do
+                v = index(w, k)
+                if v then return v end
+            end
+        end,
+    })
+
+    -- Setup window widget for signals
+    lousy.signal.setup(w)
+
+    -- Call window init functions
+    for _, func in pairs(window.init_funcs) do
+        func(w)
+    end
+
+    -- Populate notebook with tabs
+    for _, uri in ipairs(uris or {}) do
+        w:new_tab(w:search_open(uri), false)
+    end
+
+    -- Make sure something is loaded
+    if w.tabs:count() == 0 then
+        w:new_tab(w:search_open(globals.homepage), false)
+    end
+
+    -- Set initial mode
+    w:set_mode()
+
+    -- Show window
+    w.win:show()
+
+    return w
+end
+
+-- vim: et:sw=4:ts=8:sts=4:tw=80