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-module(chrme_page). |
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-export([enable/1, navigate/2, reload/1, stop_loading/1, capture_screenshot/1, |
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register_frame_navigated_handler/2, unregister_frame_navigated_handler/2]). |
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-export_type([navigation/0]). |
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-type navigation() :: #{ |
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frame_id := klsn:binstr(), |
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loader_id := klsn:binstr() | undefined |
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}. |
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%% ------------------------------------------------------------------ |
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%% Page domain utilities |
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%% ------------------------------------------------------------------ |
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%% Enable the Page domain so that events like Page.frameNavigated will be |
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%% delivered. Mirrors chrme_network:enable/1. |
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-spec enable(Name :: chrme_session:name()) -> {ok, map()} | {error, term()}. |
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enable(Name) -> |
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1 |
chrme_cdp:call(Name, <<"Page.enable">>, #{}). |
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|
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%% Navigate the current page to a URL |
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-spec navigate(Name :: chrme_session:name(), Url :: klsn:binstr()) -> {ok, navigation()} | {error, term()}. |
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navigate(Name, Url) -> |
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BinUrl = chrme_util:to_binary(Url), |
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case chrme_cdp:call(Name, <<"Page.navigate">>, #{url => BinUrl}) of |
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{ok, Resp} -> |
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FrameId = maps:get(<<"frameId">>, Resp), |
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LoaderId = maps:get(<<"loaderId">>, Resp, undefined), |
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{ok, #{frame_id => FrameId, loader_id => LoaderId}}; |
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Err -> |
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:-( |
Err |
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end. |
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|
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-spec reload(Name :: chrme_session:name()) -> {ok, undefined} | {error, term()}. |
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reload(Name) -> |
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:-( |
case chrme_cdp:call(Name, <<"Page.reload">>, #{}) of |
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:-( |
{ok, _} -> {ok, undefined}; |
| 38 |
:-( |
Err -> Err |
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end. |
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|
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-spec stop_loading(Name :: chrme_session:name()) -> {ok, undefined} | {error, term()}. |
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stop_loading(Name) -> |
| 43 |
:-( |
case chrme_cdp:call(Name, <<"Page.stopLoading">>, #{}) of |
| 44 |
:-( |
{ok, _} -> {ok, undefined}; |
| 45 |
:-( |
Err -> Err |
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end. |
| 47 |
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|
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%% Capture page screenshot as base64 |
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-spec capture_screenshot(Name :: chrme_session:name()) -> {ok, klsn:binstr()} | {error, term()}. |
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capture_screenshot(Name) -> |
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:-( |
case chrme_cdp:call(Name, <<"Page.captureScreenshot">>, #{}) of |
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{ok, Resp} -> |
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:-( |
DataBin = maps:get(<<"data">>, Resp), |
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:-( |
{ok, DataBin}; |
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Err -> |
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:-( |
Err |
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end. |
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|
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%% Subscribe to frameNavigated events |
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-spec register_frame_navigated_handler(Name :: chrme_session:name(), Fun :: fun((map()) -> any())) -> reference(). |
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register_frame_navigated_handler(Name, Fun) -> |
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Ref = make_ref(), |
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CallbackName = {chrme_page, register_frame_navigated_handler, Name, Ref}, |
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CallbackFun = fun |
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(stop) -> |
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:-( |
false; |
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(Msg = #{<<"method">> := <<"Page.frameNavigated">>, <<"params">> := Params}) -> |
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Fun(Params), |
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true; |
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(_) -> |
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false |
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end, |
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chrme_ws_apic:add_callback(Name, {CallbackName, CallbackFun}), |
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Ref. |
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-spec unregister_frame_navigated_handler(Name :: chrme_session:name(), Ref :: reference()) -> ok. |
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unregister_frame_navigated_handler(Name, Ref) -> |
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CallbackName = {chrme_page, register_frame_navigated_handler, Name, Ref}, |
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chrme_ws_apic:remove_callback(Name, CallbackName), |
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ok. |