Function updateChildren

plugins/UiPluginManager/media/js/all.js:526–572

(vnode, domNode, oldChildren, newChildren, projectionOptions)

    var createDom;
    var updateDom;
    var updateChildren = function (vnode, domNode, oldChildren, newChildren, projectionOptions) {
        if (oldChildren === newChildren) {
            return false;
        }
        oldChildren = oldChildren || emptyArray;
        newChildren = newChildren || emptyArray;
        var oldChildrenLength = oldChildren.length;
        var newChildrenLength = newChildren.length;
        var transitions = projectionOptions.transitions;
        var oldIndex = 0;
        var newIndex = 0;
        var i;
        var textUpdated = false;
        while (newIndex < newChildrenLength) {
            var oldChild = oldIndex < oldChildrenLength ? oldChildren[oldIndex] : undefined;
            var newChild = newChildren[newIndex];
            if (oldChild !== undefined && same(oldChild, newChild)) {
                textUpdated = updateDom(oldChild, newChild, projectionOptions) || textUpdated;
                oldIndex++;
            } else {
                var findOldIndex = findIndexOfChild(oldChildren, newChild, oldIndex + 1);
                if (findOldIndex >= 0) {
                    // Remove preceding missing children
                    for (i = oldIndex; i < findOldIndex; i++) {
                        nodeToRemove(oldChildren[i], transitions);
                        checkDistinguishable(oldChildren, i, vnode, 'removed');
                    }
                    textUpdated = updateDom(oldChildren[findOldIndex], newChild, projectionOptions) || textUpdated;
                    oldIndex = findOldIndex + 1;
                } else {
                    // New child
                    createDom(newChild, domNode, oldIndex < oldChildrenLength ? oldChildren[oldIndex].domNode : undefined, projectionOptions);
                    nodeAdded(newChild, transitions);
                    checkDistinguishable(newChildren, newIndex, vnode, 'added');
                }
            }
            newIndex++;
        }
        if (oldChildrenLength > oldIndex) {
            // Remove child fragments
            for (i = oldIndex; i < oldChildrenLength; i++) {
                nodeToRemove(oldChildren[i], transitions);
                checkDistinguishable(oldChildren, i, vnode, 'removed');
            }
        }
        return textUpdated;
    };
    var addChildren = function (domNode, children, projectionOptions) {
        if (!children) {
            return;