Adding default webview.lua

1 files changed, 389 insertions, 0 deletions

diff --git a/config.dot/luakit.link/webview.lua b/config.dot/luakit.link/webview.lua
new file mode 100644
index 0000000..22f1144
--- /dev/null
+++ b/config.dot/luakit.link/webview.lua
@@ -0,0 +1,389 @@
+--------------------------
+-- 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)
+        -- '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, uri, reason)
+            info("New window decision: %s (%s)", 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 = {
+    stop   = function (view) view:stop() end,
+
+    -- 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,
+
+    -- Evaluate javascript code and return string result
+    -- The frame argument can be any of the following:
+    -- * true to evaluate on the focused frame
+    -- * false or nothing to evaluate on the main frame
+    -- * a frame object to evaluate on the given frame
+    eval_js = function (view, w, script, file, frame)
+        return view:eval_js(script, file or "(inline)", frame)
+    end,
+
+    -- Evaluate javascript code from file and return string result
+    -- The frame argument can be any of the following:
+    -- * true to evaluate on the focused frame
+    -- * false or nothing to evaluate on the main frame
+    -- * a frame object to evaluate on the given frame
+    eval_js_from_file = function (view, w, file, frame)
+        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, frame)
+    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,
+}
+
+webview.scroll_parse_funcs = {
+    -- Abs "100px"
+    ["^(%d+)px$"] = function (_, _, px) return px end,
+
+    -- Rel "+/-100px"
+    ["^([-+]%d+)px$"] = function (s, axis, px) return s[axis] + px end,
+
+    -- Abs "10%"
+    ["^(%d+)%%$"] = function (s, axis, pc)
+        return math.ceil(s[axis.."max"] * (pc / 100))
+    end,
+
+    -- Rel "+/-10%"
+    ["^([-+]%d+)%%$"] = function (s, axis, pc)
+        return s[axis] + math.ceil(s[axis.."max"] * (pc / 100))
+    end,
+
+    -- Abs "10p" (pages)
+    ["^(%d+%.?%d*)p$"] = function (s, axis, p)
+        return math.ceil(s[axis.."page_size"] * p)
+    end,
+
+    -- Rel "+10p" (pages)
+    ["^([-+]%d+%.?%d*)p$"] = function (s, axis, p)
+        return s[axis] + math.ceil(s[axis.."page_size"] * p)
+    end,
+}
+
+function webview.methods.scroll(view, w, new)
+    local scroll = view.scroll
+    for axis, val in pairs{ x = new.x, y = new.y } do
+        if type(val) == "number" then
+            scroll[axis] = val
+        else
+            for pat, func in pairs(webview.scroll_parse_funcs) do
+                local n = string.match(val, pat)
+                if n then scroll[axis] = func(scroll, axis, tonumber(n)) end
+            end
+        end
+    end
+end
+
+function webview.new(w)
+    local view = widget{type = "webview"}
+
+    view.show_scrollbars = 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