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Lua

--------------------------
-- WebKit WebView class --
--------------------------
-- Webview class table
webview = {}
-- Table of functions which are called on new webview widgets.
webview.init_funcs = {
-- Set useragent
set_useragent = function (view, w)
view.user_agent = globals.useragent
end,
-- Check if checking ssl certificates
checking_ssl = function (view, w)
local ca_file = soup.ssl_ca_file
if ca_file and os.exists(ca_file) then
w.checking_ssl = true
end
end,
-- Update window and tab titles
title_update = function (view, w)
view:add_signal("property::title", function (v)
w:update_tablist()
if w.view == v then
w:update_win_title()
end
end)
end,
-- Update uri label in statusbar
uri_update = function (view, w)
view:add_signal("property::uri", function (v)
w:update_tablist()
if w.view == v then
w:update_uri()
end
end)
end,
-- Update history indicator
hist_update = function (view, w)
view:add_signal("load-status", function (v, status)
if w.view == v then
w:update_hist()
end
end)
end,
-- Update tab titles
tablist_update = function (view, w)
view:add_signal("load-status", function (v, status)
if status == "provisional" or status == "finished" or status == "failed" then
w:update_tablist()
end
end)
end,
-- Update scroll widget
scroll_update = function (view, w)
view:add_signal("expose", function (v)
if w.view == v then
w:update_scroll()
end
end)
end,
-- Update progress widget
progress_update = function (view, w)
for _, sig in ipairs({"load-status", "property::progress"}) do
view:add_signal(sig, function (v)
if w.view == v then
w:update_progress()
w:update_ssl()
end
end)
end
end,
-- Display hovered link in statusbar
link_hover_display = function (view, w)
view:add_signal("link-hover", function (v, link)
if w.view == v and link then
w:update_uri(link)
end
end)
view:add_signal("link-unhover", function (v)
if w.view == v then
w:update_uri()
end
end)
end,
-- Clicking a form field automatically enters insert mode.
form_insert_mode = function (view, w)
view:add_signal("button-press", function (v, mods, button, context)
-- Clear start search marker
(w.search_state or {}).marker = nil
if button == 1 and context.editable then
view:emit_signal("form-active")
end
end)
-- Emit root-active event in button release to prevent "missing"
-- buttons or links when the input bar hides.
view:add_signal("button-release", function (v, mods, button, context)
if button == 1 and not context.editable then
view:emit_signal("root-active")
end
end)
view:add_signal("form-active", function ()
if not w.mode.passthrough then
w:set_mode("insert")
end
end)
view:add_signal("root-active", function ()
if w.mode.reset_on_focus ~= false then
w:set_mode()
end
end)
end,
-- Catch keys in non-passthrough modes
mode_key_filter = function (view, w)
view:add_signal("key-press", function ()
if not w.mode.passthrough then
return true
end
end)
end,
-- Try to match a button event to a users button binding else let the
-- press hit the webview.
button_bind_match = function (view, w)
view:add_signal("button-release", function (v, mods, button, context)
(w.search_state or {}).marker = nil
if w:hit(mods, button, { context = context }) then
return true
end
end)
end,
-- Reset the mode on navigation
mode_reset_on_nav = function (view, w)
view:add_signal("load-status", function (v, status)
if status == "provisional" and w.view == v then
if w.mode.reset_on_navigation ~= false then
w:set_mode()
end
end
end)
end,
-- Domain properties
domain_properties = function (view, w)
view:add_signal("load-status", function (v, status)
if status ~= "committed" or v.uri == "about:blank" then return end
-- Get domain
local domain = lousy.uri.parse(v.uri).host
-- Strip leading www.
domain = string.match(domain or "", "^www%.(.+)") or domain or "all"
-- Build list of domain props tables to join & load.
-- I.e. for luakit.org load .luakit.org, luakit.org, .org
local props = {domain_props.all or {}, domain_props[domain] or {}}
repeat
table.insert(props, 2, domain_props["."..domain] or {})
domain = string.match(domain, "%.(.+)")
until not domain
-- Join all property tables
for k, v in pairs(lousy.util.table.join(unpack(props))) do
info("Domain prop: %s = %s (%s)", k, tostring(v), domain)
view[k] = v
end
end)
end,
-- Action to take on mime type decision request.
mime_decision = function (view, w)
-- Return true to accept or false to reject from this signal.
view:add_signal("mime-type-decision", function (v, uri, mime)
info("Requested link: %s (%s)", uri, mime)
-- i.e. block binary files like *.exe
--if mime == "application/octet-stream" then
-- return false
--end
end)
end,
-- Action to take on window open request.
--window_decision = function (view, w)
-- view:add_signal("new-window-decision", function (v, uri, reason)
-- if reason == "link-clicked" then
-- window.new({uri})
-- else
-- w:new_tab(uri)
-- end
-- return true
-- end)
--end,
create_webview = function (view, w)
-- Return a newly created webview in a new tab
view:add_signal("create-web-view", function (v)
return w:new_tab()
end)
end,
-- Creates context menu popup from table (and nested tables).
-- Use `true` for menu separators.
--populate_popup = function (view, w)
-- view:add_signal("populate-popup", function (v)
-- return {
-- true,
-- { "_Toggle Source", function () w:toggle_source() end },
-- { "_Zoom", {
-- { "Zoom _In", function () w:zoom_in() end },
-- { "Zoom _Out", function () w:zoom_out() end },
-- true,
-- { "Zoom _Reset", function () w:zoom_set() end }, }, },
-- }
-- end)
--end,
-- Action to take on resource request.
resource_request_decision = function (view, w)
view:add_signal("resource-request-starting", function(v, uri)
info("Requesting: %s", uri)
-- Return false to cancel the request.
end)
end,
}
-- These methods are present when you index a window instance and no window
-- method is found in `window.methods`. The window then checks if there is an
-- active webview and calls the following methods with the given view instance
-- as the first argument. All methods must take `view` & `w` as the first two
-- arguments.
webview.methods = {
-- Reload with or without ignoring cache
reload = function (view, w, bypass_cache)
if bypass_cache then
view:reload_bypass_cache()
else
view:reload()
end
end,
-- Toggle source view
toggle_source = function (view, w, show)
if show == nil then
view.view_source = not view.view_source
else
view.view_source = show
end
view:reload()
end,
-- Zoom functions
zoom_in = function (view, w, step, full_zoom)
view.full_content_zoom = not not full_zoom
step = step or globals.zoom_step or 0.1
view.zoom_level = view.zoom_level + step
end,
zoom_out = function (view, w, step, full_zoom)
view.full_content_zoom = not not full_zoom
step = step or globals.zoom_step or 0.1
view.zoom_level = math.max(0.01, view.zoom_level) - step
end,
zoom_set = function (view, w, level, full_zoom)
view.full_content_zoom = not not full_zoom
view.zoom_level = level or 1.0
end,
-- History traversing functions
back = function (view, w, n)
view:go_back(n or 1)
end,
forward = function (view, w, n)
view:go_forward(n or 1)
end,
}
function webview.methods.scroll(view, w, new)
local s = view.scroll
for _, axis in ipairs{ "x", "y" } do
-- Relative px movement
if rawget(new, axis.."rel") then
s[axis] = s[axis] + new[axis.."rel"]
-- Relative page movement
elseif rawget(new, axis .. "pagerel") then
s[axis] = s[axis] + math.ceil(s[axis.."page_size"] * new[axis.."pagerel"])
-- Absolute px movement
elseif rawget(new, axis) then
local n = new[axis]
if n == -1 then
s[axis] = s[axis.."max"]
else
s[axis] = n
end
-- Absolute page movement
elseif rawget(new, axis.."page") then
s[axis] = math.ceil(s[axis.."page_size"] * new[axis.."page"])
-- Absolute percent movement
elseif rawget(new, axis .. "pct") then
s[axis] = math.ceil(s[axis.."max"] * (new[axis.."pct"]/100))
end
end
end
function webview.new(w)
local view = widget{type = "webview"}
view.show_scrollbars = false
view.enforce_96_dpi = false
-- Call webview init functions
for k, func in pairs(webview.init_funcs) do
func(view, w)
end
return view
end
-- Insert webview method lookup on window structure
table.insert(window.indexes, 1, function (w, k)
if k == "view" then
local view = w.tabs[w.tabs:current()]
if view and type(view) == "widget" and view.type == "webview" then
w.view = view
return view
end
end
-- Lookup webview method
local func = webview.methods[k]
if not func then return end
local view = w.view
if view then
return function (_, ...) return func(view, w, ...) end
end
end)
-- vim: et:sw=4:ts=8:sts=4:tw=80