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Merge pull request #2423 from ether/fix/reimplement-ace-getAttributeOnSelection 

Re-implement ace_getAttributeOnSelection
pull/2509/merge
John McLear 2015-03-31 23:21:49 +01:00
parent 8c795b4e8a c0078abc75
commit 70fdc7dcd7
1 changed files with 44 additions and 65 deletions
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105
src/static/js/ace2_inner.js
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@ -2322,93 +2322,72 @@ function Ace2Inner(){
}
editorInfo.ace_setAttributeOnSelection = setAttributeOnSelection;
function getAttributeOnSelection(attributeName){
if (!(rep.selStart && rep.selEnd)) return;
if (!(rep.selStart && rep.selEnd)) return
// get the previous/next characters formatting when we have nothing selected
// To fix this we just change the focus area, we don't actually check anything yet.
if(rep.selStart[1] == rep.selEnd[1]){
// if we're at the beginning of a line bump end forward so we get the right attribute
if(rep.selStart[1] == 0 && rep.selEnd[1] == 0){
rep.selEnd[1] = 1;
}
if(rep.selStart[1] < 0){
rep.selStart[1] = 0;
}
var line = rep.lines.atIndex(rep.selStart[0]);
// if we're at the end of the line bmp the start back 1 so we get hte attribute
if(rep.selEnd[1] == line.text.length){
rep.selStart[1] = rep.selStart[1] -1;
}
}
// Do the detection
var selectionAllHasIt = true;
var withIt = Changeset.makeAttribsString('+', [
[attributeName, 'true']
], rep.apool);
var withItRegex = new RegExp(withIt.replace(/\*/g, '\\*') + "(\\*|$)");
function hasIt(attribs)
{
return withItRegex.test(attribs);
}
var selStartLine = rep.selStart[0];
var selEndLine = rep.selEnd[0];
for (var n = selStartLine; n <= selEndLine; n++)
{
var opIter = Changeset.opIterator(rep.alines[n]);
var indexIntoLine = 0;
var selectionStartInLine = 0;
var selectionEndInLine = rep.lines.atIndex(n).text.length; // exclude newline
if(rep.lines.atIndex(n).text.length == 0){
return false; // If the line length is 0 we basically treat it as having no formatting
return rangeHasAttrib(rep.selStart, rep.selEnd)
function rangeHasAttrib(selStart, selEnd) {
// if range is collapsed -> no attribs in range
if(selStart[1] == selEnd[1] && selStart[0] == selEnd[0]) return false
if(selStart[0] != selEnd[0]) { // -> More than one line selected
var hasAttrib = true
// from selStart to the end of the first line
hasAttrib = hasAttrib && rangeHasAttrib(selStart, [selStart[0], rep.lines.atIndex(selStart[0]).text.length])
// for all lines in between
for(var n=selStart[0]+1; n < selEnd[0]; n++) {
hasAttrib = hasAttrib && rangeHasAttrib([n, 0], [n, rep.lines.atIndex(n).text.length])
}
if(rep.selStart[1] == rep.selEnd[1] && rep.selStart[1] == rep.lines.atIndex(n).text.length){
return false; // If we're at the end of a line we treat it as having no formatting
// for the last, potentially partial, line
hasAttrib = hasAttrib && rangeHasAttrib([selEnd[0], 0], [selEnd[0], selEnd[1]])
return hasAttrib
}
if(rep.selStart[1] == 0 && rep.selEnd[1] == 0){
rep.selEnd[1] == 1;
}
if(rep.selEnd[1] == -1){
rep.selEnd[1] = 1; // sometimes rep.selEnd is -1, not sure why.. When it is we should look at the first char
}
if (n == selStartLine)
{
selectionStartInLine = rep.selStart[1];
}
if (n == selEndLine)
{
selectionEndInLine = rep.selEnd[1];
}
while (opIter.hasNext())
{
// Logic tells us we now have a range on a single line
var lineNum = selStart[0]
, start = selStart[1]
, end = selEnd[1]
, hasAttrib = true
// Iterate over attribs on this line
var opIter = Changeset.opIterator(rep.alines[lineNum])
, indexIntoLine = 0
while (opIter.hasNext()) {
var op = opIter.next();
var opStartInLine = indexIntoLine;
var opEndInLine = opStartInLine + op.chars;
if (!hasIt(op.attribs))
{
if (!hasIt(op.attribs)) {
// does op overlap selection?
if (!(opEndInLine <= selectionStartInLine || opStartInLine >= selectionEndInLine))
{
selectionAllHasIt = false;
if (!(opEndInLine <= start || opStartInLine >= end)) {
hasAttrib = false; // since it's overlapping but hasn't got the attrib -> range hasn't got it
break;
}
}
indexIntoLine = opEndInLine;
}
if (!selectionAllHasIt)
{
break;
}
}
if(selectionAllHasIt){
return true;
}else{
return false;
return hasAttrib
}
}
editorInfo.ace_getAttributeOnSelection = getAttributeOnSelection;
function toggleAttributeOnSelection(attributeName)