snabbdom/dist/snabbdom.js

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.snabbdom = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
function createElement(tagName){
  return document.createElement(tagName);
}

function createElementNS(namespaceURI, qualifiedName){
  return document.createElementNS(namespaceURI, qualifiedName);
}

function createTextNode(text){
  return document.createTextNode(text);
}


function insertBefore(parentNode, newNode, referenceNode){
  parentNode.insertBefore(newNode, referenceNode);
}


function removeChild(node, child){
  node.removeChild(child);
}

function appendChild(node, child){
  node.appendChild(child);
}

function parentNode(node){
  return node.parentElement;
}

function nextSibling(node){
  return node.nextSibling;
}

function tagName(node){
  return node.tagName;
}

function setTextContent(node, text){
  node.textContent = text;
}

module.exports = {
  createElement: createElement,
  createElementNS: createElementNS,
  createTextNode: createTextNode,
  appendChild: appendChild,
  removeChild: removeChild,
  insertBefore: insertBefore,
  parentNode: parentNode,
  nextSibling: nextSibling,
  tagName: tagName,
  setTextContent: setTextContent
};

},{}],2:[function(require,module,exports){
module.exports = {
  array: Array.isArray,
  primitive: function(s) { return typeof s === 'string' || typeof s === 'number'; },
};

},{}],3:[function(require,module,exports){
// jshint newcap: false
/* global require, module, document, Node */
'use strict';

var VNode = require('./vnode');
var is = require('./is');
var domApi = require('./htmldomapi');

function isUndef(s) { return s === undefined; }
function isDef(s) { return s !== undefined; }

var emptyNode = VNode('', {}, [], undefined, undefined);

function sameVnode(vnode1, vnode2) {
  return vnode1.key === vnode2.key && vnode1.sel === vnode2.sel;
}

function createKeyToOldIdx(children, beginIdx, endIdx) {
  var i, map = {}, key;
  for (i = beginIdx; i <= endIdx; ++i) {
    key = children[i].key;
    if (isDef(key)) map[key] = i;
  }
  return map;
}

var hooks = ['create', 'update', 'remove', 'destroy', 'pre', 'post'];

function init(modules, api) {
  var i, j, cbs = {};

  if (isUndef(api)) api = domApi;

  for (i = 0; i < hooks.length; ++i) {
    cbs[hooks[i]] = [];
    for (j = 0; j < modules.length; ++j) {
      if (modules[j][hooks[i]] !== undefined) cbs[hooks[i]].push(modules[j][hooks[i]]);
    }
  }

  function emptyNodeAt(elm) {
    return VNode(api.tagName(elm).toLowerCase(), {}, [], undefined, elm);
  }

  function createRmCb(childElm, listeners) {
    return function() {
      if (--listeners === 0) {
        var parent = api.parentNode(childElm);
        api.removeChild(parent, childElm);
      }
    };
  }

  function createElm(vnode, insertedVnodeQueue) {
    var i, data = vnode.data;
    if (isDef(data)) {
      if (isDef(i = data.hook) && isDef(i = i.init)) {
        i(vnode);
        data = vnode.data;
      }
    }
    var elm, children = vnode.children, sel = vnode.sel;
    if (isDef(sel)) {
      // Parse selector
      var hashIdx = sel.indexOf('#');
      var dotIdx = sel.indexOf('.', hashIdx);
      var hash = hashIdx > 0 ? hashIdx : sel.length;
      var dot = dotIdx > 0 ? dotIdx : sel.length;
      var tag = hashIdx !== -1 || dotIdx !== -1 ? sel.slice(0, Math.min(hash, dot)) : sel;
      elm = vnode.elm = isDef(data) && isDef(i = data.ns) ? api.createElementNS(i, tag)
                                                          : api.createElement(tag);
      if (hash < dot) elm.id = sel.slice(hash + 1, dot);
      if (dotIdx > 0) elm.className = sel.slice(dot + 1).replace(/\./g, ' ');
      if (is.array(children)) {
        for (i = 0; i < children.length; ++i) {
          api.appendChild(elm, createElm(children[i], insertedVnodeQueue));
        }
      } else if (is.primitive(vnode.text)) {
        api.appendChild(elm, api.createTextNode(vnode.text));
      }
      for (i = 0; i < cbs.create.length; ++i) cbs.create[i](emptyNode, vnode);
      i = vnode.data.hook; // Reuse variable
      if (isDef(i)) {
        if (i.create) i.create(emptyNode, vnode);
        if (i.insert) insertedVnodeQueue.push(vnode);
      }
    } else {
      elm = vnode.elm = api.createTextNode(vnode.text);
    }
    return vnode.elm;
  }

  function addVnodes(parentElm, before, vnodes, startIdx, endIdx, insertedVnodeQueue) {
    for (; startIdx <= endIdx; ++startIdx) {
      api.insertBefore(parentElm, createElm(vnodes[startIdx], insertedVnodeQueue), before);
    }
  }

  function invokeDestroyHook(vnode) {
    var i, j, data = vnode.data;
    if (isDef(data)) {
      if (isDef(i = data.hook) && isDef(i = i.destroy)) i(vnode);
      for (i = 0; i < cbs.destroy.length; ++i) cbs.destroy[i](vnode);
      if (isDef(i = vnode.children)) {
        for (j = 0; j < vnode.children.length; ++j) {
          invokeDestroyHook(vnode.children[j]);
        }
      }
    }
  }

  function removeVnodes(parentElm, vnodes, startIdx, endIdx) {
    for (; startIdx <= endIdx; ++startIdx) {
      var i, listeners, rm, ch = vnodes[startIdx];
      if (isDef(ch)) {
        if (isDef(ch.sel)) {
          invokeDestroyHook(ch);
          listeners = cbs.remove.length + 1;
          rm = createRmCb(ch.elm, listeners);
          for (i = 0; i < cbs.remove.length; ++i) cbs.remove[i](ch, rm);
          if (isDef(i = ch.data) && isDef(i = i.hook) && isDef(i = i.remove)) {
            i(ch, rm);
          } else {
            rm();
          }
        } else { // Text node
          api.removeChild(parentElm, ch.elm);
        }
      }
    }
  }

  function updateChildren(parentElm, oldCh, newCh, insertedVnodeQueue) {
    var oldStartIdx = 0, newStartIdx = 0;
    var oldEndIdx = oldCh.length - 1;
    var oldStartVnode = oldCh[0];
    var oldEndVnode = oldCh[oldEndIdx];
    var newEndIdx = newCh.length - 1;
    var newStartVnode = newCh[0];
    var newEndVnode = newCh[newEndIdx];
    var oldKeyToIdx, idxInOld, elmToMove, before;

    while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
      if (isUndef(oldStartVnode)) {
        oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
      } else if (isUndef(oldEndVnode)) {
        oldEndVnode = oldCh[--oldEndIdx];
      } else if (sameVnode(oldStartVnode, newStartVnode)) {
        patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue);
        oldStartVnode = oldCh[++oldStartIdx];
        newStartVnode = newCh[++newStartIdx];
      } else if (sameVnode(oldEndVnode, newEndVnode)) {
        patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue);
        oldEndVnode = oldCh[--oldEndIdx];
        newEndVnode = newCh[--newEndIdx];
      } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
        patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue);
        api.insertBefore(parentElm, oldStartVnode.elm, api.nextSibling(oldEndVnode.elm));
        oldStartVnode = oldCh[++oldStartIdx];
        newEndVnode = newCh[--newEndIdx];
      } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
        patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue);
        api.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
        oldEndVnode = oldCh[--oldEndIdx];
        newStartVnode = newCh[++newStartIdx];
      } else {
        if (isUndef(oldKeyToIdx)) oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx);
        idxInOld = oldKeyToIdx[newStartVnode.key];
        if (isUndef(idxInOld)) { // New element
          api.insertBefore(parentElm, createElm(newStartVnode, insertedVnodeQueue), oldStartVnode.elm);
          newStartVnode = newCh[++newStartIdx];
        } else {
          elmToMove = oldCh[idxInOld];
          patchVnode(elmToMove, newStartVnode, insertedVnodeQueue);
          oldCh[idxInOld] = undefined;
          api.insertBefore(parentElm, elmToMove.elm, oldStartVnode.elm);
          newStartVnode = newCh[++newStartIdx];
        }
      }
    }
    if (oldStartIdx > oldEndIdx) {
      before = isUndef(newCh[newEndIdx+1]) ? null : newCh[newEndIdx+1].elm;
      addVnodes(parentElm, before, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
    } else if (newStartIdx > newEndIdx) {
      removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
    }
  }

  function patchVnode(oldVnode, vnode, insertedVnodeQueue) {
    var i, hook;
    if (isDef(i = vnode.data) && isDef(hook = i.hook) && isDef(i = hook.prepatch)) {
      i(oldVnode, vnode);
    }
    var elm = vnode.elm = oldVnode.elm, oldCh = oldVnode.children, ch = vnode.children;
    if (oldVnode === vnode) return;
    if (!sameVnode(oldVnode, vnode)) {
      var parentElm = api.parentNode(oldVnode.elm);
      elm = createElm(vnode, insertedVnodeQueue);
      api.insertBefore(parentElm, elm, oldVnode.elm);
      removeVnodes(parentElm, [oldVnode], 0, 0);
      return;
    }
    if (isDef(vnode.data)) {
      for (i = 0; i < cbs.update.length; ++i) cbs.update[i](oldVnode, vnode);
      i = vnode.data.hook;
      if (isDef(i) && isDef(i = i.update)) i(oldVnode, vnode);
    }
    if (isUndef(vnode.text)) {
      if (isDef(oldCh) && isDef(ch)) {
        if (oldCh !== ch) updateChildren(elm, oldCh, ch, insertedVnodeQueue);
      } else if (isDef(ch)) {
        if (isDef(oldVnode.text)) api.setTextContent(elm, '');
        addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
      } else if (isDef(oldCh)) {
        removeVnodes(elm, oldCh, 0, oldCh.length - 1);
      } else if (isDef(oldVnode.text)) {
        api.setTextContent(elm, '');
      }
    } else if (oldVnode.text !== vnode.text) {
      api.setTextContent(elm, vnode.text);
    }
    if (isDef(hook) && isDef(i = hook.postpatch)) {
      i(oldVnode, vnode);
    }
  }

  return function(oldVnode, vnode) {
    var i, elm, parent;
    var insertedVnodeQueue = [];
    for (i = 0; i < cbs.pre.length; ++i) cbs.pre[i]();

    if (isUndef(oldVnode.sel)) {
      oldVnode = emptyNodeAt(oldVnode);
    }

    if (sameVnode(oldVnode, vnode)) {
      patchVnode(oldVnode, vnode, insertedVnodeQueue);
    } else {
      elm = oldVnode.elm;
      parent = api.parentNode(elm);

      createElm(vnode, insertedVnodeQueue);

      if (parent !== null) {
        api.insertBefore(parent, vnode.elm, api.nextSibling(elm));
        removeVnodes(parent, [oldVnode], 0, 0);
      }
    }

    for (i = 0; i < insertedVnodeQueue.length; ++i) {
      insertedVnodeQueue[i].data.hook.insert(insertedVnodeQueue[i]);
    }
    for (i = 0; i < cbs.post.length; ++i) cbs.post[i]();
    return vnode;
  };
}

module.exports = {init: init};

},{"./htmldomapi":1,"./is":2,"./vnode":4}],4:[function(require,module,exports){
module.exports = function(sel, data, children, text, elm) {
  var key = data === undefined ? undefined : data.key;
  return {sel: sel, data: data, children: children,
          text: text, elm: elm, key: key};
};

},{}]},{},[3])(3)
});
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