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Extract editor related code

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- in public/js/lib/editor/index.js
This commit is contained in:
Yukai Huang 2017-03-07 22:35:54 +08:00
parent 121d84863a
commit 6556c284e5
3 changed files with 536 additions and 569 deletions
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46
public/js/lib/editor/utils.js Normal file
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@ -0,0 +1,46 @@
const wrapSymbols = ['*', '_', '~', '^', '+', '='];
export function wrapTextWith(editor, cm, symbol) {
if (!cm.getSelection()) {
return CodeMirror.Pass;
} else {
var ranges = cm.listSelections();
for (var i = 0; i < ranges.length; i++) {
var range = ranges[i];
if (!range.empty()) {
var from = range.from(), to = range.to();
if (symbol !== 'Backspace') {
cm.replaceRange(symbol, to, to, '+input');
cm.replaceRange(symbol, from, from, '+input');
// workaround selection range not correct after add symbol
var _ranges = cm.listSelections();
var anchorIndex = editor.indexFromPos(_ranges[i].anchor);
var headIndex = editor.indexFromPos(_ranges[i].head);
if (anchorIndex > headIndex) {
_ranges[i].anchor.ch--;
} else {
_ranges[i].head.ch--;
}
cm.setSelections(_ranges);
} else {
var preEndPos = {
line: to.line,
ch: to.ch + 1
};
var preText = cm.getRange(to, preEndPos);
var preIndex = wrapSymbols.indexOf(preText);
var postEndPos = {
line: from.line,
ch: from.ch - 1
};
var postText = cm.getRange(postEndPos, from);
var postIndex = wrapSymbols.indexOf(postText);
// check if surround symbol are list in array and matched
if (preIndex > -1 && postIndex > -1 && preIndex === postIndex) {
cm.replaceRange("", to, preEndPos, '+delete');
cm.replaceRange("", postEndPos, from, '+delete');
}
}
}
}
}
}