"use strict";
(() => {
  // node_modules/morphdom/dist/morphdom-esm.js
  var DOCUMENT_FRAGMENT_NODE = 11;
  function morphAttrs(fromNode, toNode) {
    var toNodeAttrs = toNode.attributes;
    var attr;
    var attrName;
    var attrNamespaceURI;
    var attrValue;
    var fromValue;
    if (toNode.nodeType === DOCUMENT_FRAGMENT_NODE || fromNode.nodeType === DOCUMENT_FRAGMENT_NODE) {
      return;
    }
    for (var i = toNodeAttrs.length - 1; i >= 0; i--) {
      attr = toNodeAttrs[i];
      attrName = attr.name;
      attrNamespaceURI = attr.namespaceURI;
      attrValue = attr.value;
      if (attrNamespaceURI) {
        attrName = attr.localName || attrName;
        fromValue = fromNode.getAttributeNS(attrNamespaceURI, attrName);
        if (fromValue !== attrValue) {
          if (attr.prefix === "xmlns") {
            attrName = attr.name;
          }
          fromNode.setAttributeNS(attrNamespaceURI, attrName, attrValue);
        }
      } else {
        fromValue = fromNode.getAttribute(attrName);
        if (fromValue !== attrValue) {
          fromNode.setAttribute(attrName, attrValue);
        }
      }
    }
    var fromNodeAttrs = fromNode.attributes;
    for (var d = fromNodeAttrs.length - 1; d >= 0; d--) {
      attr = fromNodeAttrs[d];
      attrName = attr.name;
      attrNamespaceURI = attr.namespaceURI;
      if (attrNamespaceURI) {
        attrName = attr.localName || attrName;
        if (!toNode.hasAttributeNS(attrNamespaceURI, attrName)) {
          fromNode.removeAttributeNS(attrNamespaceURI, attrName);
        }
      } else {
        if (!toNode.hasAttribute(attrName)) {
          fromNode.removeAttribute(attrName);
        }
      }
    }
  }
  var range;
  var NS_XHTML = "http://www.w3.org/1999/xhtml";
  var doc = typeof document === "undefined" ? void 0 : document;
  var HAS_TEMPLATE_SUPPORT = !!doc && "content" in doc.createElement("template");
  var HAS_RANGE_SUPPORT = !!doc && doc.createRange && "createContextualFragment" in doc.createRange();
  function createFragmentFromTemplate(str) {
    var template = doc.createElement("template");
    template.innerHTML = str;
    return template.content.childNodes[0];
  }
  function createFragmentFromRange(str) {
    if (!range) {
      range = doc.createRange();
      range.selectNode(doc.body);
    }
    var fragment = range.createContextualFragment(str);
    return fragment.childNodes[0];
  }
  function createFragmentFromWrap(str) {
    var fragment = doc.createElement("body");
    fragment.innerHTML = str;
    return fragment.childNodes[0];
  }
  function toElement(str) {
    str = str.trim();
    if (HAS_TEMPLATE_SUPPORT) {
      return createFragmentFromTemplate(str);
    } else if (HAS_RANGE_SUPPORT) {
      return createFragmentFromRange(str);
    }
    return createFragmentFromWrap(str);
  }
  function compareNodeNames(fromEl, toEl) {
    var fromNodeName = fromEl.nodeName;
    var toNodeName = toEl.nodeName;
    var fromCodeStart, toCodeStart;
    if (fromNodeName === toNodeName) {
      return true;
    }
    fromCodeStart = fromNodeName.charCodeAt(0);
    toCodeStart = toNodeName.charCodeAt(0);
    if (fromCodeStart <= 90 && toCodeStart >= 97) {
      return fromNodeName === toNodeName.toUpperCase();
    } else if (toCodeStart <= 90 && fromCodeStart >= 97) {
      return toNodeName === fromNodeName.toUpperCase();
    } else {
      return false;
    }
  }
  function createElementNS(name, namespaceURI) {
    return !namespaceURI || namespaceURI === NS_XHTML ? doc.createElement(name) : doc.createElementNS(namespaceURI, name);
  }
  function moveChildren(fromEl, toEl) {
    var curChild = fromEl.firstChild;
    while (curChild) {
      var nextChild = curChild.nextSibling;
      toEl.appendChild(curChild);
      curChild = nextChild;
    }
    return toEl;
  }
  function syncBooleanAttrProp(fromEl, toEl, name) {
    if (fromEl[name] !== toEl[name]) {
      fromEl[name] = toEl[name];
      if (fromEl[name]) {
        fromEl.setAttribute(name, "");
      } else {
        fromEl.removeAttribute(name);
      }
    }
  }
  var specialElHandlers = {
    OPTION: function(fromEl, toEl) {
      var parentNode = fromEl.parentNode;
      if (parentNode) {
        var parentName = parentNode.nodeName.toUpperCase();
        if (parentName === "OPTGROUP") {
          parentNode = parentNode.parentNode;
          parentName = parentNode && parentNode.nodeName.toUpperCase();
        }
        if (parentName === "SELECT" && !parentNode.hasAttribute("multiple")) {
          if (fromEl.hasAttribute("selected") && !toEl.selected) {
            fromEl.setAttribute("selected", "selected");
            fromEl.removeAttribute("selected");
          }
          parentNode.selectedIndex = -1;
        }
      }
      syncBooleanAttrProp(fromEl, toEl, "selected");
    },
    INPUT: function(fromEl, toEl) {
      syncBooleanAttrProp(fromEl, toEl, "checked");
      syncBooleanAttrProp(fromEl, toEl, "disabled");
      if (fromEl.value !== toEl.value) {
        fromEl.value = toEl.value;
      }
      if (!toEl.hasAttribute("value")) {
        fromEl.removeAttribute("value");
      }
    },
    TEXTAREA: function(fromEl, toEl) {
      var newValue = toEl.value;
      if (fromEl.value !== newValue) {
        fromEl.value = newValue;
      }
      var firstChild = fromEl.firstChild;
      if (firstChild) {
        var oldValue = firstChild.nodeValue;
        if (oldValue == newValue || !newValue && oldValue == fromEl.placeholder) {
          return;
        }
        firstChild.nodeValue = newValue;
      }
    },
    SELECT: function(fromEl, toEl) {
      if (!toEl.hasAttribute("multiple")) {
        var selectedIndex = -1;
        var i = 0;
        var curChild = fromEl.firstChild;
        var optgroup;
        var nodeName;
        while (curChild) {
          nodeName = curChild.nodeName && curChild.nodeName.toUpperCase();
          if (nodeName === "OPTGROUP") {
            optgroup = curChild;
            curChild = optgroup.firstChild;
          } else {
            if (nodeName === "OPTION") {
              if (curChild.hasAttribute("selected")) {
                selectedIndex = i;
                break;
              }
              i++;
            }
            curChild = curChild.nextSibling;
            if (!curChild && optgroup) {
              curChild = optgroup.nextSibling;
              optgroup = null;
            }
          }
        }
        fromEl.selectedIndex = selectedIndex;
      }
    }
  };
  var ELEMENT_NODE = 1;
  var DOCUMENT_FRAGMENT_NODE$1 = 11;
  var TEXT_NODE = 3;
  var COMMENT_NODE = 8;
  function noop() {
  }
  function defaultGetNodeKey(node) {
    if (node) {
      return node.getAttribute && node.getAttribute("id") || node.id;
    }
  }
  function morphdomFactory(morphAttrs2) {
    return function morphdom2(fromNode, toNode, options) {
      if (!options) {
        options = {};
      }
      if (typeof toNode === "string") {
        if (fromNode.nodeName === "#document" || fromNode.nodeName === "HTML" || fromNode.nodeName === "BODY") {
          var toNodeHtml = toNode;
          toNode = doc.createElement("html");
          toNode.innerHTML = toNodeHtml;
        } else {
          toNode = toElement(toNode);
        }
      }
      var getNodeKey = options.getNodeKey || defaultGetNodeKey;
      var onBeforeNodeAdded = options.onBeforeNodeAdded || noop;
      var onNodeAdded = options.onNodeAdded || noop;
      var onBeforeElUpdated = options.onBeforeElUpdated || noop;
      var onElUpdated = options.onElUpdated || noop;
      var onBeforeNodeDiscarded = options.onBeforeNodeDiscarded || noop;
      var onNodeDiscarded = options.onNodeDiscarded || noop;
      var onBeforeElChildrenUpdated = options.onBeforeElChildrenUpdated || noop;
      var childrenOnly = options.childrenOnly === true;
      var fromNodesLookup = /* @__PURE__ */ Object.create(null);
      var keyedRemovalList = [];
      function addKeyedRemoval(key) {
        keyedRemovalList.push(key);
      }
      function walkDiscardedChildNodes(node, skipKeyedNodes) {
        if (node.nodeType === ELEMENT_NODE) {
          var curChild = node.firstChild;
          while (curChild) {
            var key = void 0;
            if (skipKeyedNodes && (key = getNodeKey(curChild))) {
              addKeyedRemoval(key);
            } else {
              onNodeDiscarded(curChild);
              if (curChild.firstChild) {
                walkDiscardedChildNodes(curChild, skipKeyedNodes);
              }
            }
            curChild = curChild.nextSibling;
          }
        }
      }
      function removeNode(node, parentNode, skipKeyedNodes) {
        if (onBeforeNodeDiscarded(node) === false) {
          return;
        }
        if (parentNode) {
          parentNode.removeChild(node);
        }
        onNodeDiscarded(node);
        walkDiscardedChildNodes(node, skipKeyedNodes);
      }
      function indexTree(node) {
        if (node.nodeType === ELEMENT_NODE || node.nodeType === DOCUMENT_FRAGMENT_NODE$1) {
          var curChild = node.firstChild;
          while (curChild) {
            var key = getNodeKey(curChild);
            if (key) {
              fromNodesLookup[key] = curChild;
            }
            indexTree(curChild);
            curChild = curChild.nextSibling;
          }
        }
      }
      indexTree(fromNode);
      function handleNodeAdded(el) {
        onNodeAdded(el);
        var curChild = el.firstChild;
        while (curChild) {
          var nextSibling = curChild.nextSibling;
          var key = getNodeKey(curChild);
          if (key) {
            var unmatchedFromEl = fromNodesLookup[key];
            if (unmatchedFromEl && compareNodeNames(curChild, unmatchedFromEl)) {
              curChild.parentNode.replaceChild(unmatchedFromEl, curChild);
              morphEl(unmatchedFromEl, curChild);
            } else {
              handleNodeAdded(curChild);
            }
          } else {
            handleNodeAdded(curChild);
          }
          curChild = nextSibling;
        }
      }
      function cleanupFromEl(fromEl, curFromNodeChild, curFromNodeKey) {
        while (curFromNodeChild) {
          var fromNextSibling = curFromNodeChild.nextSibling;
          if (curFromNodeKey = getNodeKey(curFromNodeChild)) {
            addKeyedRemoval(curFromNodeKey);
          } else {
            removeNode(curFromNodeChild, fromEl, true);
          }
          curFromNodeChild = fromNextSibling;
        }
      }
      function morphEl(fromEl, toEl, childrenOnly2) {
        var toElKey = getNodeKey(toEl);
        if (toElKey) {
          delete fromNodesLookup[toElKey];
        }
        if (!childrenOnly2) {
          if (onBeforeElUpdated(fromEl, toEl) === false) {
            return;
          }
          morphAttrs2(fromEl, toEl);
          onElUpdated(fromEl);
          if (onBeforeElChildrenUpdated(fromEl, toEl) === false) {
            return;
          }
        }
        if (fromEl.nodeName !== "TEXTAREA") {
          morphChildren(fromEl, toEl);
        } else {
          specialElHandlers.TEXTAREA(fromEl, toEl);
        }
      }
      function morphChildren(fromEl, toEl) {
        var curToNodeChild = toEl.firstChild;
        var curFromNodeChild = fromEl.firstChild;
        var curToNodeKey;
        var curFromNodeKey;
        var fromNextSibling;
        var toNextSibling;
        var matchingFromEl;
        outer:
          while (curToNodeChild) {
            toNextSibling = curToNodeChild.nextSibling;
            curToNodeKey = getNodeKey(curToNodeChild);
            while (curFromNodeChild) {
              fromNextSibling = curFromNodeChild.nextSibling;
              if (curToNodeChild.isSameNode && curToNodeChild.isSameNode(curFromNodeChild)) {
                curToNodeChild = toNextSibling;
                curFromNodeChild = fromNextSibling;
                continue outer;
              }
              curFromNodeKey = getNodeKey(curFromNodeChild);
              var curFromNodeType = curFromNodeChild.nodeType;
              var isCompatible = void 0;
              if (curFromNodeType === curToNodeChild.nodeType) {
                if (curFromNodeType === ELEMENT_NODE) {
                  if (curToNodeKey) {
                    if (curToNodeKey !== curFromNodeKey) {
                      if (matchingFromEl = fromNodesLookup[curToNodeKey]) {
                        if (fromNextSibling === matchingFromEl) {
                          isCompatible = false;
                        } else {
                          fromEl.insertBefore(matchingFromEl, curFromNodeChild);
                          if (curFromNodeKey) {
                            addKeyedRemoval(curFromNodeKey);
                          } else {
                            removeNode(curFromNodeChild, fromEl, true);
                          }
                          curFromNodeChild = matchingFromEl;
                        }
                      } else {
                        isCompatible = false;
                      }
                    }
                  } else if (curFromNodeKey) {
                    isCompatible = false;
                  }
                  isCompatible = isCompatible !== false && compareNodeNames(curFromNodeChild, curToNodeChild);
                  if (isCompatible) {
                    morphEl(curFromNodeChild, curToNodeChild);
                  }
                } else if (curFromNodeType === TEXT_NODE || curFromNodeType == COMMENT_NODE) {
                  isCompatible = true;
                  if (curFromNodeChild.nodeValue !== curToNodeChild.nodeValue) {
                    curFromNodeChild.nodeValue = curToNodeChild.nodeValue;
                  }
                }
              }
              if (isCompatible) {
                curToNodeChild = toNextSibling;
                curFromNodeChild = fromNextSibling;
                continue outer;
              }
              if (curFromNodeKey) {
                addKeyedRemoval(curFromNodeKey);
              } else {
                removeNode(curFromNodeChild, fromEl, true);
              }
              curFromNodeChild = fromNextSibling;
            }
            if (curToNodeKey && (matchingFromEl = fromNodesLookup[curToNodeKey]) && compareNodeNames(matchingFromEl, curToNodeChild)) {
              fromEl.appendChild(matchingFromEl);
              morphEl(matchingFromEl, curToNodeChild);
            } else {
              var onBeforeNodeAddedResult = onBeforeNodeAdded(curToNodeChild);
              if (onBeforeNodeAddedResult !== false) {
                if (onBeforeNodeAddedResult) {
                  curToNodeChild = onBeforeNodeAddedResult;
                }
                if (curToNodeChild.actualize) {
                  curToNodeChild = curToNodeChild.actualize(fromEl.ownerDocument || doc);
                }
                fromEl.appendChild(curToNodeChild);
                handleNodeAdded(curToNodeChild);
              }
            }
            curToNodeChild = toNextSibling;
            curFromNodeChild = fromNextSibling;
          }
        cleanupFromEl(fromEl, curFromNodeChild, curFromNodeKey);
        var specialElHandler = specialElHandlers[fromEl.nodeName];
        if (specialElHandler) {
          specialElHandler(fromEl, toEl);
        }
      }
      var morphedNode = fromNode;
      var morphedNodeType = morphedNode.nodeType;
      var toNodeType = toNode.nodeType;
      if (!childrenOnly) {
        if (morphedNodeType === ELEMENT_NODE) {
          if (toNodeType === ELEMENT_NODE) {
            if (!compareNodeNames(fromNode, toNode)) {
              onNodeDiscarded(fromNode);
              morphedNode = moveChildren(fromNode, createElementNS(toNode.nodeName, toNode.namespaceURI));
            }
          } else {
            morphedNode = toNode;
          }
        } else if (morphedNodeType === TEXT_NODE || morphedNodeType === COMMENT_NODE) {
          if (toNodeType === morphedNodeType) {
            if (morphedNode.nodeValue !== toNode.nodeValue) {
              morphedNode.nodeValue = toNode.nodeValue;
            }
            return morphedNode;
          } else {
            morphedNode = toNode;
          }
        }
      }
      if (morphedNode === toNode) {
        onNodeDiscarded(fromNode);
      } else {
        if (toNode.isSameNode && toNode.isSameNode(morphedNode)) {
          return;
        }
        morphEl(morphedNode, toNode, childrenOnly);
        if (keyedRemovalList) {
          for (var i = 0, len = keyedRemovalList.length; i < len; i++) {
            var elToRemove = fromNodesLookup[keyedRemovalList[i]];
            if (elToRemove) {
              removeNode(elToRemove, elToRemove.parentNode, false);
            }
          }
        }
      }
      if (!childrenOnly && morphedNode !== fromNode && fromNode.parentNode) {
        if (morphedNode.actualize) {
          morphedNode = morphedNode.actualize(fromNode.ownerDocument || doc);
        }
        fromNode.parentNode.replaceChild(morphedNode, fromNode);
      }
      return morphedNode;
    };
  }
  var morphdom = morphdomFactory(morphAttrs);
  var morphdom_esm_default = morphdom;

  // preview-src/previewerEventHandler.js
  var vscode = acquireVsCodeApi();
  function getLineNumber(elem) {
    const classname = elem.className;
    const line_classname = classname.split(" ").find((cn) => cn.startsWith("linemarker-"));
    const marker_vs = line_classname.split("-")[1];
    return marker_vs;
  }
  window.addEventListener(
    "click",
    (event) => {
      if (event.ctrlKey) {
        const pos = event.clientY + window.scrollY;
        const elems = document.getElementsByClassName("linemarker");
        if (elems.length === 0) {
          return;
        }
        let found = false;
        let marker_start = 0;
        let marker_end = 0;
        for (let i = 0; i < elems.length; i++) {
          const elem = elems.item(i);
          const role = elem.parentElement.getAttribute("role");
          if (role === "navigation") {
            continue;
          }
          const pos_elem = elem.getBoundingClientRect().top + window.scrollY;
          if (pos_elem > pos) {
            if (i > 0) {
              marker_start = getLineNumber(elems.item(i - 1));
              marker_end = getLineNumber(elem);
            } else {
              marker_start = -1;
              marker_end = getLineNumber(elem);
            }
            found = true;
            break;
          }
        }
        if (found === false) {
          marker_start = getLineNumber(elems.item(elems.length - 1));
          marker_end = -1;
        }
        vscode.postMessage({
          command: "show_range",
          start: marker_start,
          end: marker_end
        });
        event.stopPropagation();
        event.stopImmediatePropagation();
        event.preventDefault();
        return false;
      }
    },
    true
  );
  window.addEventListener("message", (event) => {
    const message = event.data;
    switch (message.method) {
      case "updateContent": {
        const parser = new DOMParser();
        const target_doc = parser.parseFromString(
          event.data.content,
          "text/html"
        );
        morphdom_esm_default(document.body, target_doc.body, {
          childrenOnly: true
        });
        window.document.dispatchEvent(
          new Event("DOMContentLoaded", {
            bubbles: true,
            cancelable: true
          })
        );
        MathJax.typeset();
        break;
      }
      case "updateView": {
        console.log("updateView");
        const vs_top_line = message.line;
        const elems = document.getElementsByClassName("linemarker");
        for (let i = 0; i < elems.length; i++) {
          const elem = elems.item(i);
          const role = elem.parentElement.getAttribute("role");
          if (role === "navigation") {
            continue;
          }
          const classname = elem.className;
          const marker_wv = elem.getBoundingClientRect().top + window.scrollY;
          const line_classname = classname.split(" ").find((cn) => cn.startsWith("linemarker-"));
          const marker_vs = line_classname.split("-")[1];
          if (marker_vs > vs_top_line) {
            let prev_marker_wv = 0;
            let prev_marker_vs = 0;
            if (i > 0) {
              const prev_elem = elems.item(i - 1);
              prev_marker_wv = prev_elem.getBoundingClientRect().top + window.scrollY;
              const prev_classname = prev_elem.className;
              const prev_line_classname = prev_classname.split(" ").find((cn) => cn.startsWith("linemarker-"));
              prev_marker_vs = prev_line_classname.split("-")[1];
            }
            const wv_diff = marker_wv - prev_marker_wv;
            const vs_diff = marker_vs - prev_marker_vs;
            const fact = (marker_vs - vs_top_line) / vs_diff;
            const top_wv = marker_wv - fact * wv_diff;
            window.scroll(0, top_wv - 20);
            break;
          }
        }
      }
    }
  });
  window.onload = function() {
    vscode.postMessage({ command: "load" });
  };
})();