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API categories | API index

WebRequestClient (interface)

See WebRequest.CreateWebRequest().

You have to keep a strong reference to the WebRequest object during the request, otherwise it gets destroyed and the WebRequestClient callbacks won't get called.

Table of contents:

Notes

Callbacks available in upstream CEF, but not yet exposed in CEF Python:

  • GetAuthCredentials

Callbacks

The methods of this class will be called on the same thread that created the request unless otherwise documented.

OnUploadProgress

ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid

Notifies the client of upload progress. |current| denotes the number of bytes sent so far and |total| is the total size of uploading data (or -1 if chunked upload is enabled). This method will only be called if the ReportUploadProgress flag is set on the request (see Request.GetFlags() and SetFlags())

OnDownloadProgress

ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid

Notifies the client of download progress. |current| denotes the number of bytes received up to the call and |total| is the expected total size of the response (or -1 if not determined).

OnDownloadData

ParameterType
web_requestWebRequest
datastring
Returnvoid

Called when some part of the response is read. |data| contains the current bytes received since the last call. This method will not be called if the NoDownloadData flag is set on the request (see Request.GetFlags() and SetFlags()).

OnRequestComplete

ParameterType
web_requestWebRequest
Returnvoid

Notifies the client that the request has completed. Use the WebRequest.GetRequestStatus() method to determine if the request was successful or not.

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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API categories | API index
WebRequestClient (interface)
See WebRequest.CreateWebRequest().
You have to keep a strong reference to the WebRequest object
during the request, otherwise it gets destroyed and
the WebRequestClient callbacks won't get called.
Table of contents:
Notes
Callbacks available in upstream CEF, but not yet exposed in CEF Python:
  • GetAuthCredentials
Callbacks
The methods of this class will be called on the same thread that
created the request unless otherwise documented.
OnUploadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of upload progress. |current| denotes the number of
bytes sent so far and |total| is the total size of uploading data (or -1 if
chunked upload is enabled). This method will only be called if the
ReportUploadProgress flag is set on the request (see Request.GetFlags()
and SetFlags())
OnDownloadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of download progress. |current| denotes the number of
bytes received up to the call and |total| is the expected total size of the
response (or -1 if not determined).
OnDownloadData
ParameterType
web_requestWebRequest
datastring
Returnvoid
Called when some part of the response is read. |data| contains the current
bytes received since the last call. This method will not be called if the
NoDownloadData flag is set on the request (see Request.GetFlags()
and SetFlags()).
OnRequestComplete
ParameterType
web_requestWebRequest
Returnvoid
Notifies the client that the request has completed. Use the
WebRequest.GetRequestStatus() method to determine if the request was
successful or not.

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
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API categories | API index
WebRequestClient (interface)
See WebRequest.CreateWebRequest().
You have to keep a strong reference to the WebRequest object
during the request, otherwise it gets destroyed and
the WebRequestClient callbacks won't get called.
Table of contents:
Notes
Callbacks available in upstream CEF, but not yet exposed in CEF Python:
  • GetAuthCredentials
Callbacks
The methods of this class will be called on the same thread that
created the request unless otherwise documented.
OnUploadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of upload progress. |current| denotes the number of
bytes sent so far and |total| is the total size of uploading data (or -1 if
chunked upload is enabled). This method will only be called if the
ReportUploadProgress flag is set on the request (see Request.GetFlags()
and SetFlags())
OnDownloadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of download progress. |current| denotes the number of
bytes received up to the call and |total| is the expected total size of the
response (or -1 if not determined).
OnDownloadData
ParameterType
web_requestWebRequest
datastring
Returnvoid
Called when some part of the response is read. |data| contains the current
bytes received since the last call. This method will not be called if the
NoDownloadData flag is set on the request (see Request.GetFlags()
and SetFlags()).
OnRequestComplete
ParameterType
web_requestWebRequest
Returnvoid
Notifies the client that the request has completed. Use the
WebRequest.GetRequestStatus() method to determine if the request was
successful or not.

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
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API categories | API index
WebRequestClient (interface)
See WebRequest.CreateWebRequest().
You have to keep a strong reference to the WebRequest object
during the request, otherwise it gets destroyed and
the WebRequestClient callbacks won't get called.
Table of contents:
Notes
Callbacks available in upstream CEF, but not yet exposed in CEF Python:
  • GetAuthCredentials
Callbacks
The methods of this class will be called on the same thread that
created the request unless otherwise documented.
OnUploadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of upload progress. |current| denotes the number of
bytes sent so far and |total| is the total size of uploading data (or -1 if
chunked upload is enabled). This method will only be called if the
ReportUploadProgress flag is set on the request (see Request.GetFlags()
and SetFlags())
OnDownloadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of download progress. |current| denotes the number of
bytes received up to the call and |total| is the expected total size of the
response (or -1 if not determined).
OnDownloadData
ParameterType
web_requestWebRequest
datastring
Returnvoid
Called when some part of the response is read. |data| contains the current
bytes received since the last call. This method will not be called if the
NoDownloadData flag is set on the request (see Request.GetFlags()
and SetFlags()).
OnRequestComplete
ParameterType
web_requestWebRequest
Returnvoid
Notifies the client that the request has completed. Use the
WebRequest.GetRequestStatus() method to determine if the request was
successful or not.

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
cefpython/api/WebRequestClient.md at master · Toroto006/cefpython · GitHub
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API categories | API index
WebRequestClient (interface)
See WebRequest.CreateWebRequest().
You have to keep a strong reference to the WebRequest object
during the request, otherwise it gets destroyed and
the WebRequestClient callbacks won't get called.
Table of contents:
Notes
Callbacks available in upstream CEF, but not yet exposed in CEF Python:
  • GetAuthCredentials
Callbacks
The methods of this class will be called on the same thread that
created the request unless otherwise documented.
OnUploadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of upload progress. |current| denotes the number of
bytes sent so far and |total| is the total size of uploading data (or -1 if
chunked upload is enabled). This method will only be called if the
ReportUploadProgress flag is set on the request (see Request.GetFlags()
and SetFlags())
OnDownloadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of download progress. |current| denotes the number of
bytes received up to the call and |total| is the expected total size of the
response (or -1 if not determined).
OnDownloadData
ParameterType
web_requestWebRequest
datastring
Returnvoid
Called when some part of the response is read. |data| contains the current
bytes received since the last call. This method will not be called if the
NoDownloadData flag is set on the request (see Request.GetFlags()
and SetFlags()).
OnRequestComplete
ParameterType
web_requestWebRequest
Returnvoid
Notifies the client that the request has completed. Use the
WebRequest.GetRequestStatus() method to determine if the request was
successful or not.

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
cefpython/api/WebRequestClient.md at master · Toroto006/cefpython · GitHub
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API categories | API index
WebRequestClient (interface)
See WebRequest.CreateWebRequest().
You have to keep a strong reference to the WebRequest object
during the request, otherwise it gets destroyed and
the WebRequestClient callbacks won't get called.
Table of contents:
Notes
Callbacks available in upstream CEF, but not yet exposed in CEF Python:
  • GetAuthCredentials
Callbacks
The methods of this class will be called on the same thread that
created the request unless otherwise documented.
OnUploadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of upload progress. |current| denotes the number of
bytes sent so far and |total| is the total size of uploading data (or -1 if
chunked upload is enabled). This method will only be called if the
ReportUploadProgress flag is set on the request (see Request.GetFlags()
and SetFlags())
OnDownloadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of download progress. |current| denotes the number of
bytes received up to the call and |total| is the expected total size of the
response (or -1 if not determined).
OnDownloadData
ParameterType
web_requestWebRequest
datastring
Returnvoid
Called when some part of the response is read. |data| contains the current
bytes received since the last call. This method will not be called if the
NoDownloadData flag is set on the request (see Request.GetFlags()
and SetFlags()).
OnRequestComplete
ParameterType
web_requestWebRequest
Returnvoid
Notifies the client that the request has completed. Use the
WebRequest.GetRequestStatus() method to determine if the request was
successful or not.

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
cefpython/api/WebRequestClient.md at master · Toroto006/cefpython · GitHub
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API categories | API index
WebRequestClient (interface)
See WebRequest.CreateWebRequest().
You have to keep a strong reference to the WebRequest object
during the request, otherwise it gets destroyed and
the WebRequestClient callbacks won't get called.
Table of contents:
Notes
Callbacks available in upstream CEF, but not yet exposed in CEF Python:
  • GetAuthCredentials
Callbacks
The methods of this class will be called on the same thread that
created the request unless otherwise documented.
OnUploadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of upload progress. |current| denotes the number of
bytes sent so far and |total| is the total size of uploading data (or -1 if
chunked upload is enabled). This method will only be called if the
ReportUploadProgress flag is set on the request (see Request.GetFlags()
and SetFlags())
OnDownloadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of download progress. |current| denotes the number of
bytes received up to the call and |total| is the expected total size of the
response (or -1 if not determined).
OnDownloadData
ParameterType
web_requestWebRequest
datastring
Returnvoid
Called when some part of the response is read. |data| contains the current
bytes received since the last call. This method will not be called if the
NoDownloadData flag is set on the request (see Request.GetFlags()
and SetFlags()).
OnRequestComplete
ParameterType
web_requestWebRequest
Returnvoid
Notifies the client that the request has completed. Use the
WebRequest.GetRequestStatus() method to determine if the request was
successful or not.

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
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API categories | API index
WebRequestClient (interface)
See WebRequest.CreateWebRequest().
You have to keep a strong reference to the WebRequest object
during the request, otherwise it gets destroyed and
the WebRequestClient callbacks won't get called.
Table of contents:
Notes
Callbacks available in upstream CEF, but not yet exposed in CEF Python:
  • GetAuthCredentials
Callbacks
The methods of this class will be called on the same thread that
created the request unless otherwise documented.
OnUploadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of upload progress. |current| denotes the number of
bytes sent so far and |total| is the total size of uploading data (or -1 if
chunked upload is enabled). This method will only be called if the
ReportUploadProgress flag is set on the request (see Request.GetFlags()
and SetFlags())
OnDownloadProgress
ParameterType
web_requestWebRequest
currentlong
totallong
Returnvoid
Notifies the client of download progress. |current| denotes the number of
bytes received up to the call and |total| is the expected total size of the
response (or -1 if not determined).
OnDownloadData
ParameterType
web_requestWebRequest
datastring
Returnvoid
Called when some part of the response is read. |data| contains the current
bytes received since the last call. This method will not be called if the
NoDownloadData flag is set on the request (see Request.GetFlags()
and SetFlags()).
OnRequestComplete
ParameterType
web_requestWebRequest
Returnvoid
Notifies the client that the request has completed. Use the
WebRequest.GetRequestStatus() method to determine if the request was
successful or not.