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| define(["require", "exports"], function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var DOMMethods = (function () {
function DOMMethods(editElement) {
this.directRangeElems = ['IMG', 'TABLE', 'AUDIO', 'VIDEO', 'HR'];
this.BLOCK_TAGS = ['address', 'article', 'aside', 'audio', 'blockquote',
'canvas', 'details', 'dd', 'div', 'dl', 'dt', 'fieldset', 'figcaption', 'figure', 'footer',
'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hgroup', 'hr', 'li', 'main', 'nav',
'noscript', 'output', 'p', 'pre', 'section', 'td', 'tfoot', 'th',
'video', 'body'];
this.editableElement = editElement;
this.currentDocument = editElement.ownerDocument;
}
DOMMethods.prototype.getBlockNode = function () {
var _this = this;
var blockCollection = [];
var selection = this.currentDocument.getSelection();
var range = selection.getRangeAt(0);
var directRange = range.startContainer === this.editableElement && range.startContainer === range.endContainer &&
range.startContainer.nodeName !== '#text';
if (directRange) {
if (range.startOffset === range.endOffset) {
var isDirectRangeElems = this.editableElement.childNodes[range.startOffset] &&
this.directRangeElems.indexOf(this.editableElement.childNodes[range.startOffset].nodeName) > -1;
Eif (isDirectRangeElems) {
blockCollection.push(this.editableElement.childNodes[range.startOffset]);
}
}
else {
var isElementRange = range.endOffset === range.startOffset + 1;
Eif (isElementRange) {
blockCollection.push(this.editableElement.childNodes[range.startOffset]);
}
}
Eif (blockCollection.length > 0) {
return blockCollection;
}
}
else {
var start = range.startContainer.nodeType === Node.TEXT_NODE ?
range.startContainer.parentElement : range.startContainer;
var end = range.endContainer.nodeType === Node.TEXT_NODE ?
range.endContainer.parentElement : range.endContainer;
var endBlockNode = this.isBlockNode(end) ? end : this.getParentBlockNode(end);
var blockNodeWalker = this.currentDocument.createTreeWalker(this.editableElement, NodeFilter.SHOW_ELEMENT, {
acceptNode: function (node) {
if (!range.intersectsNode(node)) {
return NodeFilter.FILTER_REJECT;
}
return _this.isBlockNode(node) ? NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_SKIP;
}
});
blockNodeWalker.currentNode = start;
while (blockNodeWalker.currentNode) {
if (this.isBlockNode(blockNodeWalker.currentNode)) {
this.addToBlockCollection(blockCollection, blockNodeWalker, range);
blockNodeWalker.nextNode();
}
else {
blockNodeWalker.previousNode();
}
if (blockNodeWalker.currentNode === end || blockNodeWalker.currentNode === endBlockNode) {
this.addToBlockCollection(blockCollection, blockNodeWalker, range);
break;
}
}
}
return blockCollection;
};
DOMMethods.prototype.addToBlockCollection = function (blockCollection, blockNodeWalker, range) {
var currentNode = blockNodeWalker.currentNode;
if (blockNodeWalker.currentNode && blockCollection.indexOf(blockNodeWalker.currentNode) === -1) {
if (currentNode.nodeName === 'LI') {
var isDirectChild = !currentNode.parentNode.closest('li');
if (isDirectChild) {
blockCollection.push(blockNodeWalker.currentNode);
}
else {
var commonAncestor = range.commonAncestorContainer;
var onlyNestedLISelection = ((commonAncestor.nodeName === 'OL' ||
commonAncestor.nodeName === 'UL') && commonAncestor.closest('li')) ? true : false;
if (onlyNestedLISelection) {
blockCollection.push(blockNodeWalker.currentNode);
}
else {
return;
}
}
}
else {
blockCollection.push(blockNodeWalker.currentNode);
}
}
};
DOMMethods.prototype.getTextNodes = function (blockElem) {
var nodeCollection = [];
var selection = this.currentDocument.getSelection();
var range = selection.getRangeAt(0);
var textNodeWalker = this.currentDocument.createTreeWalker(blockElem, NodeFilter.SHOW_TEXT, {
acceptNode: function (node) {
if (!range.intersectsNode(node)) {
return NodeFilter.FILTER_REJECT;
}
return NodeFilter.FILTER_ACCEPT;
}
});
var textNode = textNodeWalker.nextNode();
while (textNode) {
nodeCollection.push(textNode);
textNode = textNodeWalker.nextNode();
}
return nodeCollection;
};
DOMMethods.prototype.isBlockNode = function (element) {
return (!!element && (element.nodeType === Node.ELEMENT_NODE && this.BLOCK_TAGS.indexOf(element.tagName.toLowerCase()) >= 0));
};
DOMMethods.prototype.getLastTextNode = function (node) {
var treeWalker = this.currentDocument.createTreeWalker(node, NodeFilter.SHOW_TEXT, null);
var lastTextNode = null;
var currentNode = treeWalker.nextNode();
while (currentNode) {
lastTextNode = currentNode;
currentNode = treeWalker.nextNode();
}
return lastTextNode;
};
DOMMethods.prototype.getFirstTextNode = function (node) {
var treeWalker = this.currentDocument.createTreeWalker(node, NodeFilter.SHOW_TEXT, null);
var firstTextNode = treeWalker.nextNode();
return firstTextNode;
};
DOMMethods.prototype.getParentBlockNode = function (node) {
var _this = this;
var treeWalker = this.currentDocument.createTreeWalker(this.editableElement, NodeFilter.SHOW_ELEMENT, {
acceptNode: function (currentNode) {
return _this.isBlockNode(currentNode) ? NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_SKIP;
}
});
treeWalker.currentNode = node;
var blockParent = treeWalker.parentNode();
return blockParent;
};
DOMMethods.prototype.getTopMostNode = function (text) {
var domMehtods = new DOMMethods(this.editableElement);
if (domMehtods.isBlockNode(text.parentNode)) {
return text;
}
var parent = text.parentNode;
while (parent) {
if (!domMehtods.isBlockNode(parent.parentNode) && text.textContent === parent.textContent) {
parent = parent.parentNode;
}
else {
return parent;
}
}
return parent;
};
return DOMMethods;
}());
exports.DOMMethods = DOMMethods;
});
|