--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webview.lua Wed Sep 01 03:53:30 2010 +0100
@@ -0,0 +1,373 @@
+--------------------------
+-- WebKit WebView class --
+--------------------------
+
+-- Webview class table
+webview = {}
+
+-- Table of functions which are called on new webview widgets.
+webview.init_funcs = {
+ -- Set global properties
+ set_global_props = function (view, w)
+ -- Set proxy options
+ local proxy = globals.http_proxy or os.getenv("http_proxy")
+ if proxy then view:set_prop('proxy-uri', proxy) end
+ view:set_prop('user-agent', globals.useragent)
+
+ -- Set ssl options
+ if globals.ssl_strict ~= nil then
+ view:set_prop('ssl-strict', globals.ssl_strict)
+ end
+ if globals.ca_file and os.exists(globals.ca_file) then
+ view:set_prop('ssl-ca-file', globals.ca_file)
+ -- Warning: update the following variable if 'ssl-ca-file' is
+ -- changed anywhere else.
+ 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_tab_labels()
+ if w:is_current(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_tab_labels()
+ if w:is_current(v) then
+ w:update_uri(v)
+ end
+ end)
+ end,
+
+ -- Update scroll widget
+ scroll_update = function (view, w)
+ view:add_signal("expose", function (v)
+ if w:is_current(v) then
+ w:update_scroll(v)
+ 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:is_current(v) then
+ w:update_progress(v)
+ w:update_ssl(v)
+ 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:is_current(v) and link then
+ w.sbar.l.uri.text = "Link: " .. lousy.util.escape(link)
+ end
+ end)
+ view:add_signal("link-unhover", function (v)
+ if w:is_current(v) then
+ w:update_uri(v)
+ end
+ end)
+ end,
+
+ -- Clicking a form field automatically enters insert mode
+ form_insert_mode = function (view, w)
+ view:add_signal("form-active", function ()
+ (w.search_state or {}).marker = nil
+ w:set_mode("insert")
+ end)
+ view:add_signal("root-active", function ()
+ (w.search_state or {}).marker = nil
+ w:set_mode()
+ end)
+ end,
+
+ -- Stop key events hitting the webview if the user isn't in insert mode
+ mode_key_filter = function (view, w)
+ view:add_signal("key-press", function ()
+ if not w:is_mode("insert") 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)
+ -- Match button press
+ view:add_signal("button-release", function (v, mods, button)
+ (w.search_state or {}).marker = nil
+ if w:hit(mods, button) 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 w:is_current(v) and status == "provisional" then w:set_mode() end
+ end)
+ end,
+
+ -- Domain properties
+ domain_properties = function (view, w)
+ view:add_signal("load-status", function (v, status)
+ if status ~= "provisional" then return end
+ local domain = (v.uri and string.match(v.uri, "^%a+://([^/]*)/?")) or "about:blank"
+ if string.match(domain, "^www.") then domain = string.sub(domain, 5) end
+ local props = lousy.util.table.join(domain_props.all or {}, domain_props[domain] or {})
+ for k, v in pairs(props) do
+ info("Domain prop: %s = %s (%s)", k, tostring(v), domain)
+ view:set_prop(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, link, mime)
+ info("Requested link: %s (%s)", link, 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)
+ -- 'link' contains the download link
+ -- 'reason' contains the reason of the request (i.e. "link-clicked")
+ -- return TRUE to handle the request by yourself or FALSE to proceed
+ -- with default behaviour
+ view:add_signal("new-window-decision", function (v, link, reason)
+ info("New window decision: %s (%s)", link, reason)
+ if reason == "link-clicked" then
+ window.new({ link })
+ return true
+ end
+ w:new_tab(link)
+ 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,
+
+ -- Action to take on download request.
+ download_request = function (view, w)
+ -- 'link' contains the download link
+ -- 'filename' contains the suggested filename (from server or webkit)
+ view:add_signal("download-request", function (v, link, filename)
+ if not filename then return end
+ -- Make download dir
+ os.execute(string.format("mkdir -p %q", globals.download_dir))
+ local dl = globals.download_dir .. "/" .. filename
+ local wget = string.format("wget -q %q -O %q", link, dl)
+ info("Launching: %s", wget)
+ luakit.spawn(wget)
+ 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(globals.zoom_step) end },
+ { "Zoom _Out", function () w:zoom_out(globals.zoom_step) end },
+ true,
+ { "Zoom _Reset", function () w:zoom_reset() end }, }, },
+ }
+ end)
+ end,
+
+ -- Action to take on resource request.
+ resource_request_decision = function (view, w)
+ view:add_signal("resource-request-starting", function(v, uri)
+ if luakit.verbose then print("Requesting: "..uri) end
+ -- 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 = function (view, w)
+ view:reload()
+ end,
+
+ -- Property functions
+ get = function (view, w, k)
+ return view:get_prop(k)
+ end,
+
+ set = function (view, w, k, v)
+ view:set_prop(k, v)
+ end,
+
+ -- evaluate javascript code and return string result
+ eval_js = function (view, w, script, file)
+ return view:eval_js(script, file or "(inline)")
+ end,
+
+ -- evaluate javascript code from file and return string result
+ eval_js_from_file = function (view, w, file)
+ local fh, err = io.open(file)
+ if not fh then return error(err) end
+ local script = fh:read("*a")
+ fh:close()
+ return view:eval_js(script, file)
+ end,
+
+ -- close the current tab
+ close_tab = function (view, w)
+ w.tabs:remove(view)
+ view.uri = "about:blank"
+ view:destroy()
+ w:update_tab_count()
+ w:update_tab_labels()
+ end,
+
+ -- Toggle source view
+ toggle_source = function (view, w, show)
+ if show == nil then show = not view:get_view_source() end
+ view:set_view_source(show)
+ end,
+
+ -- Zoom functions
+ zoom_in = function (view, w, step)
+ view:set_prop("zoom-level", view:get_prop("zoom-level") + step)
+ end,
+
+ zoom_out = function (view, w, step)
+ local value = view:get_prop("zoom-level") - step
+ view:set_prop("zoom-level", ((value > 0.01) and value) or 0.01)
+ end,
+
+ zoom_reset = function (view, w)
+ view:set_prop("zoom-level", 1.0)
+ end,
+
+ -- Searching functions
+ start_search = function (view, w, text)
+ if string.match(text, "^[\?\/]") then
+ w:set_mode("search")
+ local i = w.ibar.input
+ i.text = text
+ i:focus()
+ i:set_position(-1)
+ else
+ return error("invalid search term, must start with '?' or '/'")
+ end
+ end,
+
+ search = function (view, w, text, forward)
+ if forward == nil then forward = true end
+
+ -- Get search state (or new state)
+ if not w.search_state then w.search_state = {} end
+ local s = w.search_state
+
+ -- Get search term
+ text = text or s.last_search
+ if not text or #text == 0 then
+ return w:clear_search()
+ end
+ s.last_search = text
+
+ if s.forward == nil then
+ -- Haven't searched before, save some state.
+ s.forward = forward
+ s.marker = view:get_scroll_vert()
+ else
+ -- Invert direction if originally searching in reverse
+ forward = (s.forward == forward)
+ end
+
+ view:search(text, false, forward, true);
+ end,
+
+ clear_search = function (view, w)
+ view:clear_search()
+ w.search_state = {}
+ end,
+
+ -- Webview scroll functions
+ scroll_vert = function (view, w, value)
+ local cur, max = view:get_scroll_vert()
+ if type(value) == "string" then
+ value = lousy.util.parse_scroll(cur, max, value)
+ end
+ view:set_scroll_vert(value)
+ end,
+
+ scroll_horiz = function (view, w, value)
+ local cur, max = view:get_scroll_horiz()
+ if type(value) == "string" then
+ value = lousy.util.parse_scroll(cur, max, value)
+ end
+ view:set_scroll_horiz(value)
+ end,
+
+ -- vertical scroll of a multiple of the view_size
+ scroll_page = function (view, w, value)
+ local cur, max, size = view:get_scroll_vert()
+ view:set_scroll_vert(cur + (size * value))
+ 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.new(w, uri)
+ local view = widget{type = "webview"}
+
+ -- Call webview init functions
+ for k, func in pairs(webview.init_funcs) do
+ func(view, w)
+ end
+
+ if uri then view.uri = uri end
+ view.show_scrollbars = false
+ return view
+end
+
+-- Insert webview method lookup on window structure
+table.insert(window.indexes, 1, function (w, k)
+ -- Get current webview
+ local view = w.tabs:atindex(w.tabs:current())
+ if not view then return end
+ -- Lookup webview method
+ local func = webview.methods[k]
+ if not func then return end
+ -- Return webview method wrapper function
+ return function (_, ...) return func(view, w, ...) end
+end)
+
+-- vim: et:sw=4:ts=8:sts=4:tw=80