- var KEYS = {
- ENTER: 13,
- ARROW_LEFT: 37,
- ARROW_UP: 38,
- ARROW_RIGHT: 39,
- ARROW_DOWN: 40,
- BACKSPACE: 8,
- DELETE: 46,
- X: 88
- }
-
- this.wrapper.on('keyup', function(e) {
- if(e.which >= 37 && e.which <= 40) {
- var element = canvas.getCursor().getPosition().element,
- caretTo = false;
- if(!element) {
- // Chrome hack
- var direction;
- if(e.which === KEYS.ARROW_LEFT || e.which === KEYS.ARROW_UP) {
- direction = 'above';
- caretTo = 'end';
- } else {
- direction = 'below';
- caretTo = 'start';
- }
- element = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]:visible', direction, window.getSelection().focusNode));
- }
- canvas.setCurrentElement(element, {caretTo: caretTo});
- }
- });
-
- this.wrapper.on('keydown', function(e) {
- var cursor = canvas.getCursor(),
- position = canvas.getCursor().getPosition(),
- element = position.element;
- if(e.which >= 37 && e.which <= 40) {
-
- if(element && (element instanceof documentElement.DocumentTextElement)) {
- if(element.isEmpty()) {
- var direction, caretTo;
- if(e.which === KEYS.ARROW_LEFT || e.which === KEYS.ARROW_UP) {
- direction = 'above';
- caretTo = 'end';
- } else {
- direction = 'below';
- caretTo = 'start';
- }
- var el = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, window.getSelection().focusNode))
- canvas.setCurrentElement(element, {caretTo: caretTo});
- } else {
- var txt = element.dom().contents()[0].data;
- if(e.which === KEYS.ARROW_LEFT && position.offset > 1 && txt.charAt(position.offset-2) === utils.unicode.ZWS) {
- e.preventDefault();
- canvas._moveCaretToTextElement(element, position.offset-2);
- }
- if(e.which === KEYS.ARROW_RIGHT && position.offset < txt.length - 1 && txt.charAt(position.offset+1) === utils.unicode.ZWS) {
- e.preventDefault();
- canvas._moveCaretToTextElement(element, position.offset+2);
- }
- }
- }
-
-
- }
-
- var selectsWholeTextElement = function() {
- if(cursor.isSelecting() && cursor.getSelectionStart().offsetAtBeginning && cursor.getSelectionEnd().offsetAtEnd)
- return true;
- return false;
- }
-
- if(e.which === KEYS.X && e.ctrlKey && selectsWholeTextElement()) {
- e.preventDefault();
- }
-
- if(e.which === KEYS.BACKSPACE || e.which === KEYS.DELETE) {
- if(cursor.isSelecting() && !cursor.isSelectingWithinElement()) {
- e.preventDefault();
- return;
- }
-
- var cursorAtOperationEdge = position.offsetAtBeginning;
- if(e.which === KEYS.DELETE) {
- cursorAtOperationEdge = position.offsetAtEnd;
- }
-
- var willDeleteWholeText = function() {
- return element.getText().length === 1 || selectsWholeTextElement();
- }
-
- if(willDeleteWholeText()) {
- e.preventDefault();
- element.setText('');
- }
- else if(element.isEmpty()) {
-
- var direction = 'above',
- caretTo = 'end';
-
- if(e.which === KEYS.DELETE) {
- direction = 'below';
- caretTo = 'start';
- }
-
- e.preventDefault();
-
- var parent = element.parent(),
- grandParent = parent ? parent.parent() : null,
- goto;
- if(parent.children().length === 1 && parent.children()[0].sameNode(element)) {
- if(grandParent && grandParent.children().length === 1) {
- goto = grandParent.append({text: ''});
- } else {
- goto = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0]));
- }
- parent.detach();
- } else {
- goto = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0]));
- element.detach();
- }
- canvas.setCurrentElement(goto, {caretTo: caretTo});
- canvas.publisher('contentChanged');
- }
- else if(cursorAtOperationEdge) {
- // todo
- e.preventDefault();
- }
- }
-
- if(e.which === KEYS.ENTER) {
- e.preventDefault();
- var cursor = canvas.getCursor(),
- position = cursor.getPosition(),
- element = position.element;
-
- if(!cursor.isSelecting()) {
- if(e.ctrlKey) {
- var added = element.after({tag: 'block'});
- added.append({text:''});
- canvas.setCurrentElement(added, {caretTo: 'start'});
-
- } else {
-
- if(!(element.parent().parent())) {
- return false; // top level element is unsplittable
- }
-
- var elements = position.element.split({offset: position.offset}),
- newEmpty,
- goto,
- gotoOptions;
-
- if(position.offsetAtBeginning)
- newEmpty = elements.first;
- else if(position.offsetAtEnd)
- newEmpty = elements.second;
-
- if(newEmpty) {
- goto = newEmpty.append(documentElement.DocumentTextElement.create({text: ''}, this));
- gotoOptions = {};
- } else {
- goto = elements.second;
- gotoOptions = {caretTo: 'start'};
- }
-
- canvas.setCurrentElement(goto, gotoOptions);
- }
- }
- }
- });