From d6720fa48d78cc313d6418acd8cbdaeda965285c Mon Sep 17 00:00:00 2001
From: bobzel <zzzman@gmail.com>
Date: Thu, 25 Apr 2024 17:15:20 -0400
Subject: changed marqueeAnnotator to save inline annotations as text strings
 instead of Docs. enabled making image crops of text selections on PDFs. 
 cleaned up webboxrendered lint promses, and Annotation render

---
 src/client/views/nodes/WebBoxRenderer.js | 133 ++++++++++++++-----------------
 1 file changed, 61 insertions(+), 72 deletions(-)

(limited to 'src/client/views/nodes/WebBoxRenderer.js')

diff --git a/src/client/views/nodes/WebBoxRenderer.js b/src/client/views/nodes/WebBoxRenderer.js
index 914adb404..6fb8f4957 100644
--- a/src/client/views/nodes/WebBoxRenderer.js
+++ b/src/client/views/nodes/WebBoxRenderer.js
@@ -1,3 +1,4 @@
+/* eslint-disable no-undef */
 /**
  *
  * @param {StyleSheetList} styleSheets
@@ -9,15 +10,14 @@ const ForeignHtmlRenderer = function (styleSheets) {
      *
      * @param {String} binStr
      */
-    const binaryStringToBase64 = function (binStr) {
-        return new Promise(resolve => {
+    const binaryStringToBase64 = binStr =>
+        new Promise(resolve => {
             const reader = new FileReader();
             reader.readAsDataURL(binStr);
             reader.onloadend = function () {
                 resolve(reader.result);
             };
         });
-    };
 
     function prepend(extension) {
         return window.location.origin + extension;
@@ -30,8 +30,8 @@ const ForeignHtmlRenderer = function (styleSheets) {
      * @param {String} url
      * @returns {Promise}
      */
-    const getResourceAsBase64 = function (webUrl, inurl) {
-        return new Promise((resolve, reject) => {
+    const getResourceAsBase64 = (webUrl, inurl) =>
+        new Promise(resolve => {
             const xhr = new XMLHttpRequest();
             // const url = inurl.startsWith("/") && !inurl.startsWith("//") ? webUrl + inurl : inurl;
             // const url = CorsProxy(inurl.startsWith("/") && !inurl.startsWith("//") ? webUrl + inurl : inurl);// inurl.startsWith("http") ? CorsProxy(inurl) : inurl;
@@ -67,16 +67,15 @@ const ForeignHtmlRenderer = function (styleSheets) {
 
             xhr.send(null);
         });
-    };
 
     /**
      *
      * @param {String[]} urls
      * @returns {Promise}
      */
-    const getMultipleResourcesAsBase64 = function (webUrl, urls) {
+    const getMultipleResourcesAsBase64 = (webUrl, urls) => {
         const promises = [];
-        for (let i = 0; i < urls.length; i += 1) {
+        for (let i = 0; webUrl && i < urls.length; i += 1) {
             promises.push(getResourceAsBase64(webUrl, urls[i]));
         }
         return Promise.all(promises);
@@ -130,6 +129,7 @@ const ForeignHtmlRenderer = function (styleSheets) {
         const urlsFound = [];
         let searchStartIndex = 0;
 
+        // eslint-disable-next-line no-constant-condition
         while (true) {
             const url = parseValue(cssRuleStr, searchStartIndex, selector, delimiters);
             if (url === null) {
@@ -155,9 +155,6 @@ const ForeignHtmlRenderer = function (styleSheets) {
     const getImageUrlsFromFromHtml = function (html) {
         return getUrlsFromCssString(html, 'src=', [' ', '>', '\t'], true);
     };
-    const getSourceUrlsFromFromHtml = function (html) {
-        return getUrlsFromCssString(html, 'source=', [' ', '>', '\t'], true);
-    };
 
     const escapeRegExp = function (string) {
         return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
@@ -171,46 +168,45 @@ const ForeignHtmlRenderer = function (styleSheets) {
      *
      * @returns {Promise<String>}
      */
-    const buildSvgDataUri = async function (webUrl, inputContentHtml, width, height, scroll, xoff) {
-        return new Promise(async (resolve, reject) => {
-            /* !! The problems !!
-             *  1. CORS (not really an issue, expect perhaps for images, as this is a general security consideration to begin with)
-             *  2. Platform won't wait for external assets to load (fonts, images, etc.)
-             */
-
-            // copy styles
-            let cssStyles = '';
-            const urlsFoundInCss = [];
-
-            for (let i = 0; i < styleSheets.length; i += 1) {
-                try {
-                    const rules = styleSheets[i].cssRules;
-                    for (let j = 0; j < rules.length; j += 1) {
-                        const cssRuleStr = rules[j].cssText;
-                        urlsFoundInCss.push(...getUrlsFromCssString(cssRuleStr));
-                        cssStyles += cssRuleStr;
-                    }
-                } catch (e) {
-                    /* empty */
+    const buildSvgDataUri = (webUrl, inputContentHtml, width, height, scroll, xoff) => {
+        /* !! The problems !!
+         *  1. CORS (not really an issue, expect perhaps for images, as this is a general security consideration to begin with)
+         *  2. Platform won't wait for external assets to load (fonts, images, etc.)
+         */
+
+        // copy styles
+        let cssStyles = '';
+        const urlsFoundInCss = [];
+
+        for (let i = 0; i < styleSheets.length; i += 1) {
+            try {
+                const rules = styleSheets[i].cssRules;
+                for (let j = 0; j < rules.length; j += 1) {
+                    const cssRuleStr = rules[j].cssText;
+                    urlsFoundInCss.push(...getUrlsFromCssString(cssRuleStr));
+                    cssStyles += cssRuleStr;
                 }
+            } catch (e) {
+                /* empty */
             }
+        }
 
-            // const fetchedResourcesFromStylesheets = await getMultipleResourcesAsBase64(webUrl, urlsFoundInCss);
-            // for (let i = 0; i < fetchedResourcesFromStylesheets.length; i++) {
-            //     const r = fetchedResourcesFromStylesheets[i];
-            //     if (r.resourceUrl) {
-            //         cssStyles = cssStyles.replace(new RegExp(escapeRegExp(r.resourceUrl), "g"), r.resourceBase64);
-            //     }
-            // }
-
-            let contentHtml = inputContentHtml
-                .replace(/<source[^>]*>/g, '') // <picture> tags have a <source> which has a srcset field of image refs.  instead of converting each, just use the default <img> of the picture
-                .replace(/noscript/g, 'div')
-                .replace(/<div class="mediaset"><\/div>/g, '') // when scripting isn't available (ie, rendering web pages here), <noscript> tags should become <div>'s.  But for Brown CS, there's a layout problem if you leave the empty <mediaset> tag
-                .replace(/<link[^>]*>/g, '') // don't need to keep any linked style sheets because we've already processed all style sheets above
-                .replace(/srcset="([^ "]*)[^"]*"/g, 'src="$1"'); // instead of converting each item in the srcset to a data url, just convert the first one and use that
-            const urlsFoundInHtml = getImageUrlsFromFromHtml(contentHtml).filter(url => !url.startsWith('data:'));
-            const fetchedResources = webUrl ? await getMultipleResourcesAsBase64(webUrl, urlsFoundInHtml) : [];
+        // const fetchedResourcesFromStylesheets = await getMultipleResourcesAsBase64(webUrl, urlsFoundInCss);
+        // for (let i = 0; i < fetchedResourcesFromStylesheets.length; i++) {
+        //     const r = fetchedResourcesFromStylesheets[i];
+        //     if (r.resourceUrl) {
+        //         cssStyles = cssStyles.replace(new RegExp(escapeRegExp(r.resourceUrl), "g"), r.resourceBase64);
+        //     }
+        // }
+
+        let contentHtml = inputContentHtml
+            .replace(/<source[^>]*>/g, '') // <picture> tags have a <source> which has a srcset field of image refs.  instead of converting each, just use the default <img> of the picture
+            .replace(/noscript/g, 'div')
+            .replace(/<div class="mediaset"><\/div>/g, '') // when scripting isn't available (ie, rendering web pages here), <noscript> tags should become <div>'s.  But for Brown CS, there's a layout problem if you leave the empty <mediaset> tag
+            .replace(/<link[^>]*>/g, '') // don't need to keep any linked style sheets because we've already processed all style sheets above
+            .replace(/srcset="([^ "]*)[^"]*"/g, 'src="$1"'); // instead of converting each item in the srcset to a data url, just convert the first one and use that
+        const urlsFoundInHtml = getImageUrlsFromFromHtml(contentHtml).filter(url => !url.startsWith('data:'));
+        return getMultipleResourcesAsBase64(webUrl, urlsFoundInHtml).then(fetchedResources => {
             for (let i = 0; i < fetchedResources.length; i += 1) {
                 const r = fetchedResources[i];
                 if (r.resourceUrl) {
@@ -243,9 +239,7 @@ const ForeignHtmlRenderer = function (styleSheets) {
                 </svg>`;
 
             // convert SVG to data-uri
-            const dataUri = `data:image/svg+xml;base64,${window.btoa(unescape(encodeURIComponent(svg)))}`;
-
-            resolve(dataUri);
+            return `data:image/svg+xml;base64,${window.btoa(unescape(encodeURIComponent(svg)))}`;
         });
     };
 
@@ -256,18 +250,19 @@ const ForeignHtmlRenderer = function (styleSheets) {
      *
      * @return {Promise<Image>}
      */
-    this.renderToImage = async function (webUrl, html, width, height, scroll, xoff) {
-        return new Promise(async (resolve, reject) => {
+    this.renderToImage = (webUrl, html, width, height, scroll, xoff) =>
+        new Promise(resolve => {
             const img = new Image();
-            console.log(`BUILDING SVG for: ${webUrl}`);
-            img.src = await buildSvgDataUri(webUrl, html, width, height, scroll, xoff);
-
             img.onload = function () {
                 console.log(`IMAGE SVG created: ${webUrl}`);
                 resolve(img);
             };
+            console.log(`BUILDING SVG for: ${webUrl}`);
+            buildSvgDataUri(webUrl, html, width, height, scroll, xoff).then(uri => {
+                img.src = uri;
+                return img;
+            });
         });
-    };
 
     /**
      * @param {String} html
@@ -276,20 +271,16 @@ const ForeignHtmlRenderer = function (styleSheets) {
      *
      * @return {Promise<Image>}
      */
-    this.renderToCanvas = async function (webUrl, html, width, height, scroll, xoff, oversample) {
-        return new Promise(async (resolve, reject) => {
-            const img = await self.renderToImage(webUrl, html, width, height, scroll, xoff);
-
+    this.renderToCanvas = (webUrl, html, width, height, scroll, xoff, oversample) =>
+        self.renderToImage(webUrl, html, width, height, scroll, xoff).then(img => {
             const canvas = document.createElement('canvas');
             canvas.width = img.width * oversample;
             canvas.height = img.height * oversample;
 
             const canvasCtx = canvas.getContext('2d');
             canvasCtx.drawImage(img, 0, 0, img.width * oversample, img.height * oversample);
-
-            resolve(canvas);
+            return canvas;
         });
-    };
 
     /**
      * @param {String} html
@@ -298,12 +289,10 @@ const ForeignHtmlRenderer = function (styleSheets) {
      *
      * @return {Promise<String>}
      */
-    this.renderToBase64Png = async function (webUrl, html, width, height, scroll, xoff, oversample) {
-        return new Promise(async (resolve, reject) => {
-            const canvas = await self.renderToCanvas(webUrl, html, width, height, scroll, xoff, oversample);
-            resolve(canvas.toDataURL('image/png'));
-        });
-    };
+    this.renderToBase64Png = (webUrl, html, width, height, scroll, xoff, oversample) =>
+        self
+            .renderToCanvas(webUrl, html, width, height, scroll, xoff, oversample) //
+            .then(canvas => canvas.toDataURL('image/png'));
 };
 
 export function CreateImage(webUrl, styleSheets, html, width, height, scroll, xoff = 0, oversample = 1) {
@@ -379,11 +368,11 @@ const ClipboardUtils = new (function () {
                         .then(result => {
                             loadFile(result, callback);
                         })
-                        .catch(error => {
+                        .catch(() => {
                             callback(null, 'Reading clipboard error.');
                         });
                 })
-                .catch(error => {
+                .catch(() => {
                     callback(null, 'Reading clipboard error.');
                 });
         } else {
-- 
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