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share-ace.js
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share-ace.js
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(function() {
var Range, applyToShareJS;
Range = require("ace/range").Range;
applyToShareJS = function(editorDoc, delta, doc) {
var getStartOffsetPosition, pos, text;
getStartOffsetPosition = function(range) {
var i, line, lines, offset, _len;
lines = editorDoc.getLines(0, range.start.row);
offset = 0;
for (i = 0, _len = lines.length; i < _len; i++) {
line = lines[i];
offset += i < range.start.row ? line.length : range.start.column;
}
return offset + range.start.row;
};
pos = getStartOffsetPosition(delta.range);
switch (delta.action) {
case 'insertText':
doc.insert(delta.text, pos);
break;
case 'removeText':
doc.del(delta.text.length, pos);
break;
case 'insertLines':
text = delta.lines.join('\n') + '\n';
doc.insert(text, pos);
break;
case 'removeLines':
text = delta.lines.join('\n') + '\n';
doc.del(text.length, pos);
break;
default:
throw new Error("unknown action: " + delta.action);
}
};
window.sharejs.Doc.prototype.attach_ace = function(editor, keepEditorContents) {
var check, doc, docListener, editorDoc, editorListener, offsetToPos, suppress;
if (!this.provides['text']) {
throw new Error('Only text documents can be attached to ace');
}
doc = this;
editorDoc = editor.getSession().getDocument();
editorDoc.setNewLineMode('unix');
check = function() {
return window.setTimeout(function() {
var editorText, otText;
editorText = editorDoc.getValue();
otText = doc.getText();
if (editorText !== otText) {
console.error("Text does not match!");
console.error("editor: " + editorText);
return console.error("ot: " + otText);
}
}, 0);
};
if (keepEditorContents) {
doc.del(doc.getText().length, 0);
doc.insert(editorDoc.getValue(), 0);
} else {
editorDoc.setValue(doc.getText());
}
check();
suppress = false;
editorListener = function(change) {
if (suppress) {
return;
}
applyToShareJS(editorDoc, change.data, doc);
return check();
};
editorDoc.on('change', editorListener);
docListener = function(op) {
suppress = true;
applyToDoc(editorDoc, op);
suppress = false;
return check();
};
offsetToPos = function(offset) {
var line, lines, row, _len;
lines = editorDoc.getAllLines();
row = 0;
for (row = 0, _len = lines.length; row < _len; row++) {
line = lines[row];
if (offset <= line.length) {
break;
}
offset -= lines[row].length + 1;
}
return {
row: row,
column: offset
};
};
doc.on('insert', function(text, pos) {
suppress = true;
editorDoc.insert(offsetToPos(pos), text);
suppress = false;
return check();
});
doc.on('delete', function(text, pos) {
var range;
suppress = true;
range = Range.fromPoints(offsetToPos(pos), offsetToPos(pos + text.length));
editorDoc.remove(range);
suppress = false;
return check();
});
doc.detach_ace = function() {
doc.removeListener('remoteop', docListener);
editorDoc.removeListener('change', editorListener);
return delete doc.detach_ace;
};
};
}).call(this);