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Preferences from \"src/client/preferences.js\"\nimport _ from 'src/external/lodash/lodash.js'\nimport Rasterize from \"src/client/rasterize.js\"\nimport {pt} from 'src/client/graphics.js'\nimport Strings from 'src/client/strings.js'\n\n/*\n * Kitchensink for all HTML manipulation utilities\n */\n\nclass KeyboardHandler {\n \n // Generic Keyboad handler to get rid of the magic keycode numbers \n static getDispatchHandler(key) {\n return ({\n \"9\": \"onTab\",\n \"13\": \"onEnter\",\n \"27\": \"onEsc\",\n \"32\": \"onSpace\",\n \"37\": \"onLeft\",\n \"38\": \"onUp\",\n \"39\": \"onRight\",\n \"40\": \"onDown\",\n })[key]\n }\n \n static dispatchKey(evt, object, upOrDown, stopAndPreventDefault) {\n var handler = this.getDispatchHandler(evt.keyCode)\n if (handler) {\n handler += upOrDown\n if (object[handler]) {\n object[handler](evt)\n if (stopAndPreventDefault) {\n evt.preventDefault();\n evt.stopPropagation();\n }\n }\n }\n var keyUpOrDown = \"onKey\" + upOrDown\n if (object[keyUpOrDown]) {\n var key = String.fromCharCode(evt.keyCode)\n object[keyUpOrDown](evt, key)\n if (stopAndPreventDefault) {\n evt.preventDefault();\n evt.stopPropagation();\n }\n }\n }\n}\n\nexport default class HTML {\n\n static findAllNodes(visit, all) {\n if (!all) { all = new Set() }\n if (!visit) { visit = document.querySelectorAll('*') }\n for (var ea of visit) {\n all.add(ea);\n if (ea.shadowRoot) {\n var subobjects = ea.shadowRoot.querySelectorAll('*');\n this.findAllNodes(subobjects, all);\n }\n }\n return Array.from(all);\n }\n \n static getFilter(ea) {\n return !['SCRIPT', 'LIVELY-PREFERENCES', 'LIVELY-HALOS'].includes(ea.tagName);\n }\n \n static getHtmlContent(body) {\n return _.filter(body.childNodes, this.getFilter).map( \n (ea) => ea.outerHTML).join(\"\\n\");\n }\n \n static clearHtmlContent(body) {\n return _.filter(body.childNodes, this.getFilter).each( (ea) => body.removeChild(ea)).join(\"\\n\")\n }\n \n static parseHTML(html) {\n var tmpRoot = document.createElement(\"div\")\n tmpRoot.innerHTML = html\n return Array.from(tmpRoot.childNodes)\n }\n \n static setHtmlContent(body, html) {\n \n \n var nodes = this.parseHTML(html)\n _.each(nodes, (ea) => {\n body.appendChild(html)\n })\n }\n \n static registerButtons(parent) {\n // Just an experiment for having to write less code.... which ended up in having more code here ;-) #Jens\n Array.prototype.forEach.call(parent.shadowRoot.querySelectorAll(\"button\"), node => {\n var name = node.id\n var funcName = name.replace(/^./, c => \"on\"+ c.toUpperCase())\n // console.log(\"register button \" + name)\n node.addEventListener(\"click\", () => {\n var func = parent[funcName]\n if (func) {\n func.call(parent)\n } else {\n alert(\"No callback: \" + funcName)\n }\n })\n })\n }\n \n static registerKeys(obj, domain, target, stopAndPreventDefault) {\n domain = domain || \"Keys\"\n target = target || obj\n \n // enable keyboard events\n if (obj && obj.getAttribute) {\n if (obj.getAttribute(\"tabindex\") === null) {\n obj.setAttribute(\"tabindex\", 0)\n }\n }\n lively.addEventListener(domain, obj, \"keydown\", evt => {\n KeyboardHandler.dispatchKey(evt, target, \"Down\", stopAndPreventDefault)\n })\n lively.addEventListener(domain, obj, \"keyup\", evt => {\n KeyboardHandler.dispatchKey(evt, target, \"Up\", stopAndPreventDefault)\n })\n }\n \n \n static registerDrag(obj, domain, target) {\n target.draggable=true; \n lively.removeEventListener(domain, target);\n lively.addEventListener(domain, target, \"dragstart\", \n evt => obj.onDragStart && obj.onDragStart(evt));\n lively.addEventListener(domain, target, \"drag\", \n evt => obj.onDrag && obj.onDrag(evt));\n lively.addEventListener(domain, target, \"dragend\", \n evt => obj.onDragEnd && obj.onDragEnd(evt));\n }\n \n \n static registerInputs(parent) {\n Array.prototype.forEach.call(parent.shadowRoot.querySelectorAll(\"input\"), node => {\n var name = node.id\n var funcName = name.replace(/^./, function (c) {\n return \"on\" + c.toUpperCase() ;\n }) + \"Changed\";\n // console.log(\"register input \" + name)\n node.addEventListener(\"input\", function(evt) {\n var value = node.value\n var func = parent[funcName];\n if (func) {\n func.call(parent, value);\n } else {\n // ignore it\n // alert(\"No callback: \" + funcName);\n }\n });\n })\n }\n\n static fixLinks(nodes, dir, followPath) {\n // console.log(\"fix links \" + dir)\n if (! followPath) {\n throw new Error(\"argument followPath missing\");\n }\n if (! nodes) return;\n \n Array.prototype.forEach.call(nodes, node => {\n if (node.getAttribute) {\n \n var href = node.getAttribute(\"href\")\n if (href) {\n // console.log(\"FIX LINK \", href)\n // #TODO load inplace....\n var path;\n var anchor;\n var m\n if (m = href.match(/javascript:visitPath\\('webwerkstatt\\/(.*)'\\)/)) {\n path = \"/Thesis/\" + m[1]\n } else if (m = href.match(/javascript:(.*)'\\)/)) {\n var code = m[1]\n // do nothing \n } else if (href.match(/([A-Za-z]+):\\/\\/.*/)) {\n // console.log(\"ignore \" + href);\n path = href;\n } else if (href.match(/^\\//)) {\n path = href; // ABSOLTUE paths\n } else if (href.match(/^#/)) {\n // Anchor links\n path = null\n anchor = href\n } else {\n path = dir + href // that leaves us RELATIVE paths\n if(!path.match(/((\\.[A-Za-z0-9]+)|(\\/))$/) && !path.match(/\\?/)) {\n // no ending?\n // we could check, or assume md for the moment\n path += \".md\"\n console.log(\"assume Markdown for \"+ path)\n }\n } \n if (path) {\n // console.log(\"fix \" + href + \" to \" + path + \"(dir \" + dir + \")\")\n if (node.tagName == \"LINK\") {\n // console.log(\"update LINK\", path)\n node.setAttribute(\"data-href\", href) // so we keep the original somewhere..\n node.setAttribute(\"href\", path)\n } \n lively.addEventListener(\"lively\", node, \"click\", (evt) => { \n evt.preventDefault()\n evt.stopPropagation()\n followPath(path); \n return false; \n });\n } else if (anchor) {\n lively.addEventListener(\"lively\", node, \"click\", (evt) => { \n debugger\n evt.preventDefault()\n evt.stopPropagation()\n followPath(anchor); \n return false; \n });\n } else {\n // console.log(\"ignore \" + href)\n }\n } else if (node.getAttribute('src')) {\n // image tag\n let src = node.getAttribute('src'),\n // TODO: remove duplicate\n swAwareBasePath = '', //https://lively4/\n path;\n // TODO: remove duplucated logic\n if (src.match(/([A-Za-z]+):\\/\\/.+/)) {\n // ignore FULL URLS\n // console.log(\"ignore \" + src);\n } else if (src.match(/^data:.+/)) {\n // ignore data urls\n } else if (src.match(/^\\//)) {\n path = src; // ABSOLTUE paths\n } else {\n console.log(\"FIX SRC \", node.localName, swAwareBasePath + dir, \"src:\" + src)\n path = swAwareBasePath + dir + src // that leaves us RELATIVE paths\n }\n if (path) {\n node.setAttribute('src', path);\n } else {\n // console.log(\"ignore image \" + href)\n }\n }\n this.fixLinks(node.childNodes, dir, followPath)\n }\n })\n }\n \n static saveCurrentPageAs() {\n var prev = lively.preferences.getURLParameter(\"page\")\n if (!prev) prev = \"\"\n var url = window.prompt(\"Save page as?\", prev)\n this.savePageAs(url)\n }\n\n static saveCurrentPage() {\n var url = lively.preferences.getURLParameter(\"page\");\n if (!url) {\n lively.confirm(\"Could not save this page...\")\n } else {\n this.savePageAs(url)\n }\n }\n \n static savePageAs(url) {\n var source = document.body.innerHTML // #TODO here we must put more work...\n lively.files.saveFile(url, source).then( () => {\n lively.notify(\"Saved \" + url)\n })\n }\n\n static getGlobalSource(worldContext) {\n worldContext= worldContext || document.body;\n Preferences.write(\"bodyPosition\", JSON.stringify(lively.getPosition(document.body)))\n Preferences.write(\"bodyScroll\", JSON.stringify({\n x: document.scrollingElement.scrollLeft,\n y: document.scrollingElement.scrollTop\n }));\n \n var source = \"\"\n var oldActiveElement = lively.activeElement()\n worldContext.querySelectorAll(\"*\").forEach( ea => {\n try {\n if (ea.livelyPrepareSave) ea.livelyPrepareSave();\n } catch(e) {\n console.warn(\"Error during prepare save\", e);\n }\n });\n lively.focusWithoutScroll(oldActiveElement)\n\n Array.from(worldContext.querySelectorAll(\":scope > lively-window, :scope > .lively-content\")).filter(ea => {\n return !this.hasDoNotPersistTag(ea)\n }).forEach( ea => {\n source += ea.outerHTML + \"\\n\"\n });\n return source\n }\n \n static hasDoNotPersistTag(node, checkForChildrenValueToo = false) {\n return node.attributes\n && node.attributes.hasOwnProperty('data-lively4-donotpersist')\n && (checkForChildrenValueToo ?\n node.dataset.lively4Donotpersist == 'children' || node.dataset.lively4Donotpersist == 'all' :\n node.dataset.lively4Donotpersist == 'all');\n }\n \n static async loadHTMLFromURL(url, zoom=1) {\n var html = await fetch(url).then(r => {\n if (r.status != 200) {\n throw new Error(\"Could not load HTML from \" + url + \" due to status \" + r.status)\n }\n return r.text()\n })\n var tmp = await lively.create(\"div\")\n tmp.style.transform = `scale(${zoom})`\n lively.setGlobalPosition(tmp, pt(0,0))\n try {\n lively.clipboard.pasteHTMLDataInto(html, tmp)\n } finally {\n tmp.remove()\n }\n return tmp\n }\n \n static async saveAsPNG(url) {\n if (url.match(/\\.html$/)) {\n var saveAsURL = url.replace(/html$/, \"png\")\n var zoom = 2\n var element = await this.loadHTMLFromURL(url, zoom)\n document.body.appendChild(element)\n // await lively.sleep(100)\n try {\n await Rasterize.elementToURL(element, saveAsURL, zoom) \n } finally {\n element.remove()\n }\n }\n return saveAsURL\n }\n\n static async registerAttributeObservers(obj) {\n obj._attrObserver && obj._attrObserver.disconnect(); \n\n obj._attrObserver = new MutationObserver((mutations) => {\n mutations.forEach((mutation) => { \n if(mutation.type == \"attributes\") { \n // console.log('mutation ' + mutation.attributeName )\n var methodName = \"on\" + Strings.toUpperCaseFirst(mutation.attributeName) + \"Changed\"\n if (obj[methodName]) {\n // console.log(\"found \" + methodName)\n obj[methodName](\n mutation.target.getAttribute(mutation.attributeName),\n mutation.oldValue)\n } else {\n console.log(\"[AttributeObservers] NOT found: \" + methodName, obj)\n }\n }\n });\n });\n obj._attrObserver.observe(obj, { attributes: true }); \n }\n\n // ## Example workspace\n /*\n import html from \"src/client/html.js\"\n lively.html.registerContextStyleObserver(document.body)\n\n lively.html.registerContextStyleObserver(document.body).then(o => {\n o.disconnect()\n })\n */\n \n static removeContextStyleChangeListener(obj, cb) {\n if (!obj || ! cb) {\n throw new Error(\"parameter missing\")\n }\n var map = this.getContextStyleCallbackMap()\n var array = map.get(obj)\n if (array) {\n array = []\n map.set(obj, array.filter(ea => ea !== cb))\n }\n }\n \n static addContextStyleChangeListener(obj, cb) {\n if (!obj || ! cb) {\n throw new Error(\"parameter missing\")\n }\n var map = this.getContextStyleCallbackMap()\n var array = map.get(obj)\n if (!array) {\n array = []\n map.set(obj, array)\n }\n array.push(cb)\n }\n \n \n static getContextStyleCallbackMap() {\n if (!this.contextStyleCallbackMap) {\n this.contextStyleCallbackMap = new WeakMap()\n }\n return this.contextStyleCallbackMap\n }\n \n \n static async disconnectContextStyleObserver(obj, domain=\"\") {\n var observer = obj[\"_contextStyleObserver\" + domain] \n if (observer) {\n observer.disconnect(); \n }\n }\n \n \n static async registerContextStyleObserver(obj, domain=\"\") {\n this.disconnectContextStyleObserver(obj, domain);\n\n \n var map = this.getContextStyleCallbackMap()\n \n var observer = new MutationObserver((mutations) => {\n mutations.forEach((mutation) => { \n if(mutation.type == \"attributes\" \n && mutation.attributeName == \"style\"\n && mutation.target !== document.body) {\n \n \n \n var changeEvent = new CustomEvent(\"context-style-changed\", {\n bubbles: false,\n target: mutation.target\n })\n if (mutation.target.isMetaNode) return;\n mutation.target.dispatchEvent(changeEvent) \n lively.allElements(true, mutation.target).forEach(ea => {\n if (ea.isMetaNode) return;\n var cbArray = map.get(ea) \n if (cbArray) {\n cbArray.forEach(eaCB => {\n eaCB(changeEvent)\n })\n }\n \n }) \n }\n });\n })\n obj[\"_contextStyleObserver\" + domain] = observer \n observer.observe(obj, { \n subtree: true,\n attributes: true,\n attributeFilter: [\"style\"]\n });\n return observer \n }\n \n \n \n // #TODO refactor magic numbers to style? maybe lively.css?\n static addDeepMousePressed(element, listFunc, cb) {\n if (!listFunc) {\n throw new Error(\"listFunc argument is missing\")\n }\n var deepListId = \"deep-list\"\n function clearList() {\n var oldList = element.querySelector(\"#\" + deepListId)\n if (oldList) oldList.remove()\n }\n lively.addEventListener(\"HTMLDeepPress\", element, \"mousedown\", async (evt) => {\n clearList()\n element._deepPressedLastMouseUp = null\n element.cancelOnBack = null\n await lively.sleep(1000)\n if (!element._deepPressedLastMouseUp) {\n element.cancelOnBack = true\n var list = {... \n listFunc().map(ea => {\n var item = - {ea}
\n item.addEventListener(\"mouseenter\", () => item.style.backgroundColor = \"lightgray\")\n item.addEventListener(\"mouseleave\", () => item.style.backgroundColor = \"\")\n item.addEventListener(\"mouseup\", (evt) => {\n evt.stopPropagation()\n evt.preventDefault()\n list.remove()\n cb && cb(evt, ea)\n })\n return item\n })\n }
{... \n listFunc().map(ea => {\n // we accept a list of objects or HTMLElements\n var item;\n if (ea instanceof HTMLElement) {\n item = ea;\n } else {\n item = - {ea.toString()}
;\n if (ea.style) { item.style = ea.style; }\n }\n\n item.addEventListener(\"mouseenter\", () => item.style.backgroundColor = \"lightgray\")\n item.addEventListener(\"mouseleave\", () => item.style.backgroundColor = \"\")\n item.addEventListener(\"mouseup\", (evt) => {\n evt.stopPropagation()\n evt.preventDefault()\n list.remove()\n cb && cb(evt, ea)\n })\n\n return item\n })\n }