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actually works

This commit is contained in:
John McLear 2013-02-17 18:05:25 +00:00
parent 140ff6f1bf
commit 04f609752f
1 changed files with 14 additions and 16 deletions
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28
src/static/js/ace2_inner.js
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@ -3731,29 +3731,27 @@ function Ace2Inner(){
}, 200);
}
// Chrome sucks at moving the users UI to the right place when the user uses the arrow keys
// we catch these issues and fix it.
// You can replicate this bug by copy/pasting text into a pad and moving it about then using the
// arrow keys to navitgate
if((evt.which == 37 || evt.which == 38 || evt.which == 39 || evt.which == 40) && type == 'keydown' && $.browser.chrome){
/* Is it an event we care about? */
var isUpArrow = evt.which === 38;
var isLeftArrow = evt.which === 38;
var newVisibleLineRange = getVisibleLineRange(); // get the current visible range
top.console.log("IM NOT UPDATING! I need a way to get the actual rep when a key is held down", rep.selStart[0]);
if(isUpArrow || isLeftArrow){ // was it an up arrow or left arrow?
var lineNum = rep.selStart[0]; // Get the current Line Number IE 84
var caretIsVisible = (lineNum > newVisibleLineRange[0]); // Is the cursor in the visible Range IE ie 84 > 14?
/* 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 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(caretOffsetTop){ // sometimes caretOffsetTop bugs out and returns 0, not sure why, possible Chrome bug? Either way if it does we don't wanna mess with it
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.
top.console.log("I need to scroll thw UI to here");
var lineHeight = textLineHeight(); // what Is the height of each line?
// 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")