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Copy pathScreenCapture.js
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553 lines (494 loc) · 15 KB
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import { isMobile, resizeImage } from "./GleapHelper";
import { isBlacklisted } from "./ResourceExclusionList";
export const startScreenCapture = (isLiveSite) => {
return prepareScreenshotData(isLiveSite);
};
const documentToHTML = (clone) => {
var html = "";
var node = window.document.doctype;
if (node) {
html =
"<!DOCTYPE " +
node.name +
(node.publicId ? ' PUBLIC "' + node.publicId + '"' : "") +
(!node.publicId && node.systemId ? " SYSTEM" : "") +
(node.systemId ? ' "' + node.systemId + '"' : "") +
">";
}
if (clone && clone.childNodes && clone.childNodes.length > 0) {
for (var i = 0; i < clone.childNodes.length; i++) {
if (clone.childNodes[i]) {
html += clone.childNodes[i].outerHTML;
}
}
}
return html;
};
const replaceAsync = (str, regex, asyncFn) => {
return new Promise((resolve, reject) => {
const promises = [];
str.replace(regex, (match, ...args) => {
const promise = asyncFn(match, ...args);
promises.push(promise);
});
Promise.all(promises)
.then((data) => {
resolve(str.replace(regex, () => data.shift()));
})
.catch(() => {
reject();
});
});
};
const loadCSSUrlResources = (data, basePath, remote) => {
return replaceAsync(
data,
/url\((.*?)\)/g,
(matchedData) =>
new Promise((resolve, reject) => {
if (!matchedData) {
return resolve(matchedData);
}
var matchedUrl = matchedData
.substr(4, matchedData.length - 5)
.replaceAll("'", "")
.replaceAll('"', "");
// Remote file or data
if (
matchedUrl.indexOf("http") === 0 ||
matchedUrl.indexOf("//") === 0 ||
matchedUrl.indexOf("data") === 0
) {
return resolve(matchedData);
}
try {
var resourcePath = matchedUrl;
if (basePath) {
resourcePath = basePath + "/" + matchedUrl;
}
// Try to fetch external resource.
if (!remote) {
return fetchCSSResource(resourcePath).then((resourceData) => {
return resolve("url(" + resourceData + ")");
});
} else {
return resolve("url(" + resourcePath + ")");
}
} catch (exp) {
return resolve(matchedData);
}
})
);
};
const fetchCSSResource = (url) => {
return new Promise((resolve, reject) => {
if (url) {
var xhr = new XMLHttpRequest();
xhr.onload = function () {
var reader = new FileReader();
reader.onloadend = function () {
resolve(reader.result);
};
reader.onerror = function () {
reject();
};
reader.readAsDataURL(xhr.response);
};
xhr.onerror = function (err) {
resolve();
};
xhr.open("GET", url);
xhr.responseType = "blob";
xhr.send();
} else {
resolve();
}
});
};
const progressResource = (data, elem, resolve, reject) => {
resizeImage(data, 500, 500)
.then((data) => {
elem.src = data;
resolve();
})
.catch(() => {
console.warn("BB: Image resize failed.");
resolve();
});
};
const fetchItemResource = (elem) => {
return new Promise((resolve, reject) => {
if (elem && elem.src) {
if (isBlacklisted(elem.src)) {
return resolve();
}
var xhr = new XMLHttpRequest();
xhr.onload = function () {
var reader = new FileReader();
reader.onloadend = function () {
progressResource(reader.result, elem, resolve, reject);
};
reader.onerror = function () {
resolve();
};
reader.readAsDataURL(xhr.response);
};
xhr.onerror = function (err) {
resolve();
};
var url = elem.src;
xhr.open("GET", url);
xhr.responseType = "blob";
xhr.send();
} else {
resolve();
}
});
};
const downloadAllImages = (dom) => {
const imgItems = dom.querySelectorAll("img");
const imgItemsPromises = [];
for (var i = 0; i < imgItems.length; i++) {
const item = imgItems[i];
imgItemsPromises.push(fetchItemResource(item));
}
return Promise.all(imgItemsPromises);
};
const replaceStyleNodes = (clone, styleSheet, cssTextContent, styleId) => {
{
var cloneTargetNode = null;
if (styleSheet.ownerNode) {
cloneTargetNode = clone.querySelector('[bb-styleid="' + styleId + '"]');
}
try {
if (cloneTargetNode) {
var replacementNode = null;
if (cssTextContent != "") {
// Create node.
const head = clone.querySelector("head");
var styleNode = window.document.createElement("style");
head.appendChild(styleNode);
styleNode.type = "text/css";
if (styleNode.styleSheet) {
styleNode.styleSheet.cssText = cssTextContent;
} else {
styleNode.appendChild(
window.document.createTextNode(cssTextContent)
);
}
replacementNode = styleNode;
} else {
var linkNode = window.document.createElement("link");
linkNode.rel = "stylesheet";
linkNode.type = styleSheet.type;
linkNode.href = styleSheet.href;
linkNode.media = styleSheet.media;
replacementNode = linkNode;
}
if (replacementNode) {
cloneTargetNode.parentNode.insertBefore(
replacementNode,
cloneTargetNode
);
cloneTargetNode.remove();
}
}
} catch (exp) { }
}
};
const getTextContentFromStyleSheet = (styleSheet) => {
var cssRules = null;
try {
if (styleSheet.cssRules) {
cssRules = styleSheet.cssRules;
} else if (styleSheet.rules) {
cssRules = styleSheet.rules;
}
} catch (exp) { }
var cssTextContent = "";
if (cssRules) {
for (var cssRuleItem in cssRules) {
if (cssRules[cssRuleItem].cssText) {
cssTextContent += cssRules[cssRuleItem].cssText;
}
}
}
return cssTextContent;
}
const downloadAllCSSUrlResources = (clone, remote) => {
var promises = [];
for (var i = 0; i < document.styleSheets.length; i++) {
const styleSheet = document.styleSheets[i];
// Skip if the stylesheet is meant for print
if (styleSheet.media && styleSheet.media.mediaText === 'print') {
continue;
}
const cssTextContent = getTextContentFromStyleSheet(styleSheet);
if (styleSheet && styleSheet.ownerNode) {
if (cssTextContent != "") {
// Resolve resources.
const baseTags = document.getElementsByTagName("base");
var basePathURL = baseTags.length
? baseTags[0].href.substr(location.origin.length, 999)
: window.location.href;
if (styleSheet.href) {
basePathURL = styleSheet.href;
}
const basePath = basePathURL.substring(0, basePathURL.lastIndexOf("/"));
promises.push(
loadCSSUrlResources(cssTextContent, basePath, remote).then(
(replacedStyle) => {
return {
styletext: replacedStyle,
stylesheet: styleSheet,
styleId: styleSheet.ownerNode.getAttribute("bb-styleid"),
};
}
)
);
} else {
promises.push(
Promise.resolve({
styletext: cssTextContent,
stylesheet: styleSheet,
styleId: styleSheet.ownerNode.getAttribute("bb-styleid"),
})
);
}
}
}
return Promise.all(promises).then((results) => {
if (results) {
for (var i = 0; i < results.length; i++) {
replaceStyleNodes(
clone,
results[i].stylesheet,
results[i].styletext,
results[i].styleId
);
}
}
return true;
});
};
const prepareRemoteData = (clone, remote) => {
return new Promise((resolve, reject) => {
if (remote) {
// Always download CSS.
return downloadAllCSSUrlResources(clone, remote)
.then(() => {
resolve();
})
.catch(() => {
resolve();
});
} else {
return downloadAllImages(clone)
.then(() => {
return downloadAllCSSUrlResources(clone, remote).then(() => {
resolve();
});
})
.catch(() => {
console.warn(
"Gleap: Failed with resolving local resources. Please contact the Gleap support team."
);
resolve();
});
}
});
};
const handleAdoptedStyleSheets = (doc, clone, shadowNodeId) => {
if (typeof doc.adoptedStyleSheets !== "undefined") {
for (let i = 0; i < doc.adoptedStyleSheets.length; i++) {
const styleSheet = doc.adoptedStyleSheets[i];
const cssTextContent = getTextContentFromStyleSheet(styleSheet);
var shadowStyleNode = window.document.createElement("style");
shadowStyleNode.type = "text/css";
if (shadowStyleNode.styleSheet) {
shadowStyleNode.styleSheet.cssText = cssTextContent;
} else {
shadowStyleNode.appendChild(
window.document.createTextNode(cssTextContent)
);
}
if (shadowNodeId) {
shadowStyleNode.setAttribute("bb-shadow-child", shadowNodeId);
}
clone.insertBefore(shadowStyleNode, clone.firstElementChild);
}
}
}
const deepClone = (host) => {
let shadowNodeId = 1;
const cloneNode = (node, parent, shadowRoot) => {
const walkTree = (nextn, nextp, innerShadowRoot) => {
while (nextn) {
cloneNode(nextn, nextp, innerShadowRoot);
nextn = nextn.nextSibling;
}
};
const clone = node.cloneNode();
if (typeof clone.setAttribute !== "undefined") {
if (shadowRoot) {
clone.setAttribute("bb-shadow-child", shadowRoot);
}
if (node instanceof HTMLCanvasElement) {
try {
clone.setAttribute("bb-canvas-data", node.toDataURL());
} catch (exp) {
console.warn("Gleap: Failed to clone canvas data.", exp);
}
}
if (node instanceof HTMLCanvasElement) {
try {
clone.setAttribute("bb-canvas-data", node.toDataURL());
} catch (exp) {
console.warn("Gleap: Failed to clone canvas data.", exp);
}
}
}
if (node.nodeType == Node.ELEMENT_NODE) {
const tagName = node.tagName ? node.tagName.toUpperCase() : node.tagName;
if (
tagName == "IFRAME" ||
tagName == "VIDEO" ||
tagName == "EMBED" ||
tagName == "IMG" ||
tagName == "SVG"
) {
const boundingRect = node.getBoundingClientRect();
clone.setAttribute("bb-element", true);
clone.setAttribute("bb-height", boundingRect.height);
clone.setAttribute("bb-width", boundingRect.width);
}
if ((node.scrollTop > 0 || node.scrollLeft > 0)) {
clone.setAttribute("bb-scrollpos", true);
clone.setAttribute("bb-scrolltop", node.scrollTop);
clone.setAttribute("bb-scrollleft", node.scrollLeft);
}
if (
tagName === "SELECT" ||
tagName === "TEXTAREA" ||
tagName === "INPUT"
) {
var val = node.value;
if (
node.getAttribute("gleap-ignore") === "value" ||
node.classList.contains('gl-mask')
) {
val = new Array(val.length + 1).join("*");
}
clone.setAttribute("bb-data-value", val);
if (
(node.type === "checkbox" || node.type === "radio") &&
node.checked
) {
clone.setAttribute("bb-data-checked", true);
}
}
}
parent.appendChild(clone);
if (node.shadowRoot) {
var rootShadowNodeId = shadowNodeId;
shadowNodeId++;
walkTree(node.shadowRoot.firstChild, clone, rootShadowNodeId);
handleAdoptedStyleSheets(node.shadowRoot, clone, rootShadowNodeId);
if (typeof clone.setAttribute !== "undefined") {
clone.setAttribute("bb-shadow-parent", rootShadowNodeId);
}
}
walkTree(node.firstChild, clone);
};
const fragment = document.createDocumentFragment();
cloneNode(host, fragment);
// Work on adopted stylesheets.
var clonedHead = fragment.querySelector("head");
if (!clonedHead) {
clonedHead = fragment;
}
handleAdoptedStyleSheets(window.document, clonedHead);
return fragment;
};
const prepareScreenshotData = (remote) => {
return new Promise((resolve, reject) => {
const styleTags = window.document.querySelectorAll("style, link");
for (var i = 0; i < styleTags.length; ++i) {
styleTags[i].setAttribute("bb-styleid", i);
}
const clone = deepClone(window.document.documentElement);
// Fix for web imports (depracted).
const linkImportElems = clone.querySelectorAll("link[rel=import]");
for (var i = 0; i < linkImportElems.length; ++i) {
const referenceNode = linkImportElems[i];
if (
referenceNode &&
referenceNode.childNodes &&
referenceNode.childNodes.length > 0
) {
const childNodes = referenceNode.childNodes;
while (childNodes.length > 0) {
referenceNode.parentNode.insertBefore(childNodes[0], referenceNode);
}
referenceNode.remove();
}
}
// Remove all scripts & style
const scriptElems = clone.querySelectorAll("script, noscript");
for (var i = 0; i < scriptElems.length; ++i) {
scriptElems[i].remove();
}
// Cleanup base path
var existingBasePath = "";
const baseElems = clone.querySelectorAll("base");
for (var i = 0; i < baseElems.length; ++i) {
if (baseElems[i].href) {
existingBasePath = baseElems[i].href;
}
baseElems[i].remove();
}
// Adjust the base node
const baseUrl = window.location.href.substring(0, window.location.href.lastIndexOf("/"));
var newBaseUrl = baseUrl + "/";
if (existingBasePath) {
if (existingBasePath.startsWith("http")) {
// Absolute path.
newBaseUrl = existingBasePath;
} else {
// Relative path.
newBaseUrl = baseUrl + existingBasePath;
if (!newBaseUrl.endsWith("/")) {
newBaseUrl += "/";
}
}
}
const baseNode = window.document.createElement("base");
baseNode.href = newBaseUrl;
const head = clone.querySelector("head");
head.insertBefore(baseNode, head.firstChild);
// Do further cleanup.
const dialogElems = clone.querySelectorAll(
".bb-feedback-dialog-container, .bb-capture-editor-borderlayer"
);
for (var i = 0; i < dialogElems.length; ++i) {
dialogElems[i].remove();
}
// Calculate heights
const bbElems = clone.querySelectorAll("[bb-element=true]");
for (var i = 0; i < bbElems.length; ++i) {
if (bbElems[i]) {
bbElems[i].style.height = bbElems[i].getAttribute("bb-height") + "px";
}
}
prepareRemoteData(clone, remote).then(() => {
const html = documentToHTML(clone);
resolve({
html: html,
baseUrl: baseUrl,
width: window.innerWidth,
height: window.innerHeight,
isMobile: isMobile(),
});
});
});
};