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seems to be working pretty well

This commit is contained in:
John McLear 2013-02-17 18:01:25 +00:00
parent 93d58b93be
commit 6b47fb69d0
1 changed files with 27 additions and 1 deletions
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28
src/static/js/ace2_inner.js
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@ -3731,6 +3731,33 @@ function Ace2Inner(){
updateBrowserSelectionFromRep(); updateBrowserSelectionFromRep();
}, 200); }, 200);
} }
/* Attempt to apply some sanity to cursor handling in Chrome after a copy / paste event
We have to do this the way we do because rep. doesn't hold the value for keyheld events IE if the user
presses and holds the arrow key */
if((evt.which == 37 || evt.which == 38 || evt.which == 39 || evt.which == 40) && $.browser.chrome){
var isLeftArrow = evt.which === 37;
var isUpArrow = evt.which === 38;
var isRightArrow = evt.which === 39;
var isDownArrow = evt.which === 40;
var newVisibleLineRange = getVisibleLineRange(); // get the current visible range -- This works great.
var lineHeight = textLineHeight(); // what Is the height of each line?
var myselection = document.getSelection(); // get the current caret selection, can't use rep. here because that only gives us the start position not the current
var caretOffsetTop = myselection.focusNode.parentNode.offsetTop; // get the carets selection offset in px IE 214
if((isUpArrow || isLeftArrow || isRightArrow || isDownArrow) && caretOffsetTop){ // was it an up arrow or left arrow?
var lineNum = Math.round(caretOffsetTop / lineHeight) ; // Get the current Line Number IE 84
var caretIsVisible = (lineNum > newVisibleLineRange[0] && lineNum < newVisibleLineRange[1]); // Is the cursor in the visible Range IE ie 84 > 14 and 84 < 90?
if(!caretIsVisible){ // is the cursor no longer visible to the user?
// Oh boy the caret is out of the visible area, I need to scroll the browser window to lineNum.
// Get the new Y by getting the line number and multiplying by the height of each line.
var newY = lineHeight * (lineNum -1); // -1 to go to the line above
setScrollY(newY); // set the scroll height of the browser
}
}
}
} }
if (type == "keydown") if (type == "keydown")
@ -3836,7 +3863,6 @@ function Ace2Inner(){
selection.endPoint = getPointForLineAndChar(se); selection.endPoint = getPointForLineAndChar(se);
selection.focusAtStart = !! rep.selFocusAtStart; selection.focusAtStart = !! rep.selFocusAtStart;
setSelection(selection); setSelection(selection);
} }