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define([
'summernote/core/agent',
'summernote/core/func',
'summernote/core/list',
'summernote/core/dom'
], function (agent, func, list, dom) {
var range = (function () {
/**
* return boundaryPoint from TextRange, inspired by Andy Na's HuskyRange.js
*
* @param {TextRange} textRange
* @param {Boolean} isStart
* @return {BoundaryPoint}
*
* @see http://msdn.microsoft.com/en-us/library/ie/ms535872(v=vs.85).aspx
*/
var textRangeToPoint = function (textRange, isStart) {
var container = textRange.parentElement(), offset;
var tester = document.body.createTextRange(), prevContainer;
var childNodes = list.from(container.childNodes);
for (offset = 0; offset < childNodes.length; offset++) {
if (dom.isText(childNodes[offset])) {
continue;
}
tester.moveToElementText(childNodes[offset]);
if (tester.compareEndPoints('StartToStart', textRange) >= 0) {
break;
}
prevContainer = childNodes[offset];
}
if (offset !== 0 && dom.isText(childNodes[offset - 1])) {
var textRangeStart = document.body.createTextRange(), curTextNode = null;
textRangeStart.moveToElementText(prevContainer || container);
textRangeStart.collapse(!prevContainer);
curTextNode = prevContainer ? prevContainer.nextSibling : container.firstChild;
var pointTester = textRange.duplicate();
pointTester.setEndPoint('StartToStart', textRangeStart);
var textCount = pointTester.text.replace(/[\r\n]/g, '').length;
while (textCount > curTextNode.nodeValue.length && curTextNode.nextSibling) {
textCount -= curTextNode.nodeValue.length;
curTextNode = curTextNode.nextSibling;
}
/* jshint ignore:start */
var dummy = curTextNode.nodeValue; // enforce IE to re-reference curTextNode, hack
/* jshint ignore:end */
if (isStart && curTextNode.nextSibling && dom.isText(curTextNode.nextSibling) &&
textCount === curTextNode.nodeValue.length) {
textCount -= curTextNode.nodeValue.length;
curTextNode = curTextNode.nextSibling;
}
container = curTextNode;
offset = textCount;
}
return {
cont: container,
offset: offset
};
};
/**
* return TextRange from boundary point (inspired by google closure-library)
* @param {BoundaryPoint} point
* @return {TextRange}
*/
var pointToTextRange = function (point) {
var textRangeInfo = function (container, offset) {
var node, isCollapseToStart;
if (dom.isText(container)) {
var prevTextNodes = dom.listPrev(container, func.not(dom.isText));
var prevContainer = list.last(prevTextNodes).previousSibling;
node = prevContainer || container.parentNode;
offset += list.sum(list.tail(prevTextNodes), dom.nodeLength);
isCollapseToStart = !prevContainer;
} else {
node = container.childNodes[offset] || container;
if (dom.isText(node)) {
return textRangeInfo(node, 0);
}
offset = 0;
isCollapseToStart = false;
}
return {
node: node,
collapseToStart: isCollapseToStart,
offset: offset
};
};
var textRange = document.body.createTextRange();
var info = textRangeInfo(point.node, point.offset);
textRange.moveToElementText(info.node);
textRange.collapse(info.collapseToStart);
textRange.moveStart('character', info.offset);
return textRange;
};
/**
* Wrapped Range
*
* @constructor
* @param {Node} sc - start container
* @param {Number} so - start offset
* @param {Node} ec - end container
* @param {Number} eo - end offset
*/
var WrappedRange = function (sc, so, ec, eo) {
this.sc = sc;
this.so = so;
this.ec = ec;
this.eo = eo;
// nativeRange: get nativeRange from sc, so, ec, eo
var nativeRange = function () {
if (agent.isW3CRangeSupport) {
var w3cRange = document.createRange();
w3cRange.setStart(sc, so);
w3cRange.setEnd(ec, eo);
return w3cRange;
} else {
var textRange = pointToTextRange({
node: sc,
offset: so
});
textRange.setEndPoint('EndToEnd', pointToTextRange({
node: ec,
offset: eo
}));
return textRange;
}
};
this.getPoints = function () {
return {
sc: sc,
so: so,
ec: ec,
eo: eo
};
};
this.getStartPoint = function () {
return {
node: sc,
offset: so
};
};
this.getEndPoint = function () {
return {
node: ec,
offset: eo
};
};
/**
* select update visible range
*/
this.select = function () {
var nativeRng = nativeRange();
if (agent.isW3CRangeSupport) {
var selection = document.getSelection();
if (selection.rangeCount > 0) {
selection.removeAllRanges();
}
selection.addRange(nativeRng);
} else {
nativeRng.select();
}
return this;
};
/**
* @return {WrappedRange}
*/
this.normalize = function () {
/**
* @param {BoundaryPoint} point
* @param {Boolean} isLeftToRight
* @return {BoundaryPoint}
*/
var getVisiblePoint = function (point, isLeftToRight) {
if ((dom.isVisiblePoint(point) && !dom.isEdgePoint(point)) ||
(dom.isVisiblePoint(point) && dom.isRightEdgePoint(point) && !isLeftToRight) ||
(dom.isVisiblePoint(point) && dom.isLeftEdgePoint(point) && isLeftToRight) ||
(dom.isVisiblePoint(point) && dom.isBlock(point.node) && dom.isEmpty(point.node))) {
return point;
}
// point on block's edge
var block = dom.ancestor(point.node, dom.isBlock);
if (((dom.isLeftEdgePointOf(point, block) || dom.isVoid(dom.prevPoint(point).node)) && !isLeftToRight) ||
((dom.isRightEdgePointOf(point, block) || dom.isVoid(dom.nextPoint(point).node)) && isLeftToRight)) {
// returns point already on visible point
if (dom.isVisiblePoint(point)) {
return point;
}
// reverse direction
isLeftToRight = !isLeftToRight;
}
var nextPoint = isLeftToRight ? dom.nextPointUntil(dom.nextPoint(point), dom.isVisiblePoint) :
dom.prevPointUntil(dom.prevPoint(point), dom.isVisiblePoint);
return nextPoint || point;
};
var endPoint = getVisiblePoint(this.getEndPoint(), false);
var startPoint = this.isCollapsed() ? endPoint : getVisiblePoint(this.getStartPoint(), true);
return new WrappedRange(
startPoint.node,
startPoint.offset,
endPoint.node,
endPoint.offset
);
};
/**
* returns matched nodes on range
*
* @param {Function} [pred] - predicate function
* @param {Object} [options]
* @param {Boolean} [options.includeAncestor]
* @param {Boolean} [options.fullyContains]
* @return {Node[]}
*/
this.nodes = function (pred, options) {
pred = pred || func.ok;
var includeAncestor = options && options.includeAncestor;
var fullyContains = options && options.fullyContains;
// TODO compare points and sort
var startPoint = this.getStartPoint();
var endPoint = this.getEndPoint();
var nodes = [];
var leftEdgeNodes = [];
dom.walkPoint(startPoint, endPoint, function (point) {
if (dom.isEditable(point.node)) {
return;
}
var node;
if (fullyContains) {
if (dom.isLeftEdgePoint(point)) {
leftEdgeNodes.push(point.node);
}
if (dom.isRightEdgePoint(point) && list.contains(leftEdgeNodes, point.node)) {
node = point.node;
}
} else if (includeAncestor) {
node = dom.ancestor(point.node, pred);
} else {
node = point.node;
}
if (node && pred(node)) {
nodes.push(node);
}
}, true);
return list.unique(nodes);
};
/**
* returns commonAncestor of range
* @return {Element} - commonAncestor
*/
this.commonAncestor = function () {
return dom.commonAncestor(sc, ec);
};
/**
* returns expanded range by pred
*
* @param {Function} pred - predicate function
* @return {WrappedRange}
*/
this.expand = function (pred) {
var startAncestor = dom.ancestor(sc, pred);
var endAncestor = dom.ancestor(ec, pred);
if (!startAncestor && !endAncestor) {
return new WrappedRange(sc, so, ec, eo);
}
var boundaryPoints = this.getPoints();
if (startAncestor) {
boundaryPoints.sc = startAncestor;
boundaryPoints.so = 0;
}
if (endAncestor) {
boundaryPoints.ec = endAncestor;
boundaryPoints.eo = dom.nodeLength(endAncestor);
}
return new WrappedRange(
boundaryPoints.sc,
boundaryPoints.so,
boundaryPoints.ec,
boundaryPoints.eo
);
};
/**
* @param {Boolean} isCollapseToStart
* @return {WrappedRange}
*/
this.collapse = function (isCollapseToStart) {
if (isCollapseToStart) {
return new WrappedRange(sc, so, sc, so);
} else {
return new WrappedRange(ec, eo, ec, eo);
}
};
/**
* splitText on range
*/
this.splitText = function () {
var isSameContainer = sc === ec;
var boundaryPoints = this.getPoints();
if (dom.isText(ec) && !dom.isEdgePoint(this.getEndPoint())) {
ec.splitText(eo);
}
if (dom.isText(sc) && !dom.isEdgePoint(this.getStartPoint())) {
boundaryPoints.sc = sc.splitText(so);
boundaryPoints.so = 0;
if (isSameContainer) {
boundaryPoints.ec = boundaryPoints.sc;
boundaryPoints.eo = eo - so;
}
}
return new WrappedRange(
boundaryPoints.sc,
boundaryPoints.so,
boundaryPoints.ec,
boundaryPoints.eo
);
};
/**
* delete contents on range
* @return {WrappedRange}
*/
this.deleteContents = function () {
if (this.isCollapsed()) {
return this;
}
var rng = this.splitText();
var nodes = rng.nodes(null, {
fullyContains: true
});
// find new cursor point
var point = dom.prevPointUntil(rng.getStartPoint(), function (point) {
return !list.contains(nodes, point.node);
});
var emptyParents = [];
$.each(nodes, function (idx, node) {
// find empty parents
var parent = node.parentNode;
if (point.node !== parent && dom.nodeLength(parent) === 1) {
emptyParents.push(parent);
}
dom.remove(node, false);
});
// remove empty parents
$.each(emptyParents, function (idx, node) {
dom.remove(node, false);
});
return new WrappedRange(
point.node,
point.offset,
point.node,
point.offset
).normalize();
};
/**
* makeIsOn: return isOn(pred) function
*/
var makeIsOn = function (pred) {
return function () {
var ancestor = dom.ancestor(sc, pred);
return !!ancestor && (ancestor === dom.ancestor(ec, pred));
};
};
// isOnEditable: judge whether range is on editable or not
this.isOnEditable = makeIsOn(dom.isEditable);
// isOnList: judge whether range is on list node or not
this.isOnList = makeIsOn(dom.isList);
// isOnAnchor: judge whether range is on anchor node or not
this.isOnAnchor = makeIsOn(dom.isAnchor);
// isOnAnchor: judge whether range is on cell node or not
this.isOnCell = makeIsOn(dom.isCell);
/**
* @param {Function} pred
* @return {Boolean}
*/
this.isLeftEdgeOf = function (pred) {
if (!dom.isLeftEdgePoint(this.getStartPoint())) {
return false;
}
var node = dom.ancestor(this.sc, pred);
return node && dom.isLeftEdgeOf(this.sc, node);
};
/**
* returns whether range was collapsed or not
*/
this.isCollapsed = function () {
return sc === ec && so === eo;
};
/**
* wrap inline nodes which children of body with paragraph
*
* @return {WrappedRange}
*/
this.wrapBodyInlineWithPara = function () {
if (dom.isBodyContainer(sc) && dom.isEmpty(sc)) {
sc.innerHTML = dom.emptyPara;
return new WrappedRange(sc.firstChild, 0, sc.firstChild, 0);
}
/**
* [workaround] firefox often create range on not visible point. so normalize here.
* - firefox: |<p>text</p>|
* - chrome: <p>|text|</p>
*/
var rng = this.normalize();
if (dom.isParaInline(sc) || dom.isPara(sc)) {
return rng;
}
// find inline top ancestor
var topAncestor;
if (dom.isInline(rng.sc)) {
var ancestors = dom.listAncestor(rng.sc, func.not(dom.isInline));
topAncestor = list.last(ancestors);
if (!dom.isInline(topAncestor)) {
topAncestor = ancestors[ancestors.length - 2] || rng.sc.childNodes[rng.so];
}
} else {
topAncestor = rng.sc.childNodes[rng.so > 0 ? rng.so - 1 : 0];
}
// siblings not in paragraph
var inlineSiblings = dom.listPrev(topAncestor, dom.isParaInline).reverse();
inlineSiblings = inlineSiblings.concat(dom.listNext(topAncestor.nextSibling, dom.isParaInline));
// wrap with paragraph
if (inlineSiblings.length) {
var para = dom.wrap(list.head(inlineSiblings), 'p');
dom.appendChildNodes(para, list.tail(inlineSiblings));
}
return this.normalize();
};
/**
* insert node at current cursor
*
* @param {Node} node
* @return {Node}
*/
this.insertNode = function (node) {
var rng = this.wrapBodyInlineWithPara().deleteContents();
var info = dom.splitPoint(rng.getStartPoint(), dom.isInline(node));
if (info.rightNode) {
info.rightNode.parentNode.insertBefore(node, info.rightNode);
} else {
info.container.appendChild(node);
}
return node;
};
/**
* insert html at current cursor
*/
this.pasteHTML = function (markup) {
var contentsContainer = $('<div></div>').html(markup)[0];
var childNodes = list.from(contentsContainer.childNodes);
var rng = this.wrapBodyInlineWithPara().deleteContents();
return childNodes.reverse().map(function (childNode) {
return rng.insertNode(childNode);
}).reverse();
};
/**
* returns text in range
*
* @return {String}
*/
this.toString = function () {
var nativeRng = nativeRange();
return agent.isW3CRangeSupport ? nativeRng.toString() : nativeRng.text;
};
/**
* returns range for word before cursor
*
* @param {Boolean} [findAfter] - find after cursor, default: false
* @return {WrappedRange}
*/
this.getWordRange = function (findAfter) {
var endPoint = this.getEndPoint();
if (!dom.isCharPoint(endPoint)) {
return this;
}
var startPoint = dom.prevPointUntil(endPoint, function (point) {
return !dom.isCharPoint(point);
});
if (findAfter) {
endPoint = dom.nextPointUntil(endPoint, function (point) {
return !dom.isCharPoint(point);
});
}
return new WrappedRange(
startPoint.node,
startPoint.offset,
endPoint.node,
endPoint.offset
);
};
/**
* create offsetPath bookmark
*
* @param {Node} editable
*/
this.bookmark = function (editable) {
return {
s: {
path: dom.makeOffsetPath(editable, sc),
offset: so
},
e: {
path: dom.makeOffsetPath(editable, ec),
offset: eo
}
};
};
/**
* create offsetPath bookmark base on paragraph
*
* @param {Node[]} paras
*/
this.paraBookmark = function (paras) {
return {
s: {
path: list.tail(dom.makeOffsetPath(list.head(paras), sc)),
offset: so
},
e: {
path: list.tail(dom.makeOffsetPath(list.last(paras), ec)),
offset: eo
}
};
};
/**
* getClientRects
* @return {Rect[]}
*/
this.getClientRects = function () {
var nativeRng = nativeRange();
return nativeRng.getClientRects();
};
};
/**
* @class core.range
*
* Data structure
* * BoundaryPoint: a point of dom tree
* * BoundaryPoints: two boundaryPoints corresponding to the start and the end of the Range
*
* See to http://www.w3.org/TR/DOM-Level-2-Traversal-Range/ranges.html#Level-2-Range-Position
*
* @singleton
* @alternateClassName range
*/
return {
/**
* @method
*
* create Range Object From arguments or Browser Selection
*
* @param {Node} sc - start container
* @param {Number} so - start offset
* @param {Node} ec - end container
* @param {Number} eo - end offset
* @return {WrappedRange}
*/
create : function (sc, so, ec, eo) {
if (!arguments.length) { // from Browser Selection
if (agent.isW3CRangeSupport) {
var selection = document.getSelection();
if (!selection || selection.rangeCount === 0) {
return null;
} else if (dom.isBody(selection.anchorNode)) {
// Firefox: returns entire body as range on initialization. We won't never need it.
return null;
}
var nativeRng = selection.getRangeAt(0);
sc = nativeRng.startContainer;
so = nativeRng.startOffset;
ec = nativeRng.endContainer;
eo = nativeRng.endOffset;
} else { // IE8: TextRange
var textRange = document.selection.createRange();
var textRangeEnd = textRange.duplicate();
textRangeEnd.collapse(false);
var textRangeStart = textRange;
textRangeStart.collapse(true);
var startPoint = textRangeToPoint(textRangeStart, true),
endPoint = textRangeToPoint(textRangeEnd, false);
// same visible point case: range was collapsed.
if (dom.isText(startPoint.node) && dom.isLeftEdgePoint(startPoint) &&
dom.isTextNode(endPoint.node) && dom.isRightEdgePoint(endPoint) &&
endPoint.node.nextSibling === startPoint.node) {
startPoint = endPoint;
}
sc = startPoint.cont;
so = startPoint.offset;
ec = endPoint.cont;
eo = endPoint.offset;
}
} else if (arguments.length === 2) { //collapsed
ec = sc;
eo = so;
}
return new WrappedRange(sc, so, ec, eo);
},
/**
* @method
*
* create WrappedRange from node
*
* @param {Node} node
* @return {WrappedRange}
*/
createFromNode: function (node) {
var sc = node;
var so = 0;
var ec = node;
var eo = dom.nodeLength(ec);
// browsers can't target a picture or void node
if (dom.isVoid(sc)) {
so = dom.listPrev(sc).length - 1;
sc = sc.parentNode;
}
if (dom.isBR(ec)) {
eo = dom.listPrev(ec).length - 1;
ec = ec.parentNode;
} else if (dom.isVoid(ec)) {
eo = dom.listPrev(ec).length;
ec = ec.parentNode;
}
return this.create(sc, so, ec, eo);
},
/**
* create WrappedRange from node after position
*
* @param {Node} node
* @return {WrappedRange}
*/
createFromNodeBefore: function (node) {
return this.createFromNode(node).collapse(true);
},
/**
* create WrappedRange from node after position
*
* @param {Node} node
* @return {WrappedRange}
*/
createFromNodeAfter: function (node) {
return this.createFromNode(node).collapse();
},
/**
* @method
*
* create WrappedRange from bookmark
*
* @param {Node} editable
* @param {Object} bookmark
* @return {WrappedRange}
*/
createFromBookmark : function (editable, bookmark) {
var sc = dom.fromOffsetPath(editable, bookmark.s.path);
var so = bookmark.s.offset;
var ec = dom.fromOffsetPath(editable, bookmark.e.path);
var eo = bookmark.e.offset;
return new WrappedRange(sc, so, ec, eo);
},
/**
* @method
*
* create WrappedRange from paraBookmark
*
* @param {Object} bookmark
* @param {Node[]} paras
* @return {WrappedRange}
*/
createFromParaBookmark: function (bookmark, paras) {
var so = bookmark.s.offset;
var eo = bookmark.e.offset;
var sc = dom.fromOffsetPath(list.head(paras), bookmark.s.path);
var ec = dom.fromOffsetPath(list.last(paras), bookmark.e.path);
return new WrappedRange(sc, so, ec, eo);
}
};
})();
return range;
});