/**
* BoundaryCaret.js
*
* Released under LGPL License.
* Copyright (c) 1999-2017 Ephox Corp. All rights reserved
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
define(
'tinymce.core.keyboard.BoundaryCaret',
[
'ephox.katamari.api.Option',
'tinymce.core.caret.CaretContainer',
'tinymce.core.caret.CaretContainerInline',
'tinymce.core.caret.CaretContainerRemove',
'tinymce.core.caret.CaretFinder',
'tinymce.core.caret.CaretPosition',
'tinymce.core.dom.NodeType',
'tinymce.core.keyboard.InlineUtils'
],
function (Option, CaretContainer, CaretContainerInline, CaretContainerRemove, CaretFinder, CaretPosition, NodeType, InlineUtils) {
var insertInlinePos = function (pos, before) {
if (NodeType.isText(pos.container())) {
return CaretContainerInline.insertInline(before, pos.container());
} else {
return CaretContainerInline.insertInline(before, pos.getNode());
}
};
var isPosCaretContainer = function (pos, caret) {
var caretNode = caret.get();
return caretNode && pos.container() === caretNode && CaretContainer.isCaretContainerInline(caretNode);
};
var renderCaret = function (caret, location) {
return location.fold(
function (element) { // Before
CaretContainerRemove.remove(caret.get());
var text = CaretContainerInline.insertInlineBefore(element);
caret.set(text);
return Option.some(new CaretPosition(text, text.length - 1));
},
function (element) { // Start
return CaretFinder.firstPositionIn(element).map(function (pos) {
if (!isPosCaretContainer(pos, caret)) {
CaretContainerRemove.remove(caret.get());
var text = insertInlinePos(pos, true);
caret.set(text);
return new CaretPosition(text, 1);
} else {
return new CaretPosition(caret.get(), 1);
}
});
},
function (element) { // End
return CaretFinder.lastPositionIn(element).map(function (pos) {
if (!isPosCaretContainer(pos, caret)) {
CaretContainerRemove.remove(caret.get());
var text = insertInlinePos(pos, false);
caret.set(text);
return new CaretPosition(text, text.length - 1);
} else {
return new CaretPosition(caret.get(), caret.get().length - 1);
}
});
},
function (element) { // After
CaretContainerRemove.remove(caret.get());
var text = CaretContainerInline.insertInlineAfter(element);
caret.set(text);
return Option.some(new CaretPosition(text, 1));
}
);
};
return {
renderCaret: renderCaret
};
}
);
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