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shift logic working but wtf is happening here?!

page-down-up-bugfix
John McLear 2021-01-04 16:25:37 +00:00
parent ea010c92d5
commit d41b5ec96d
1 changed files with 34 additions and 27 deletions
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61
src/static/js/ace2_inner.js
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@ -3057,13 +3057,12 @@ function Ace2Inner() {
const linesLength = rep.lines.length();
let previousCharacterOffset;
top.console.log('previousCharacterOffset', previousCharacterOffset);
// boolean - reflects if the user is attempting to highlight content
const highlighting = shiftKey && (rep.selStart[0] !== rep.selEnd[0] || rep.selStart[1] !== rep.selEnd[1]);
const isShiftKey = shiftKey;
if (isPageUp) {
top.console.log('BEFORE', rep.selStart, rep.selEnd);
// Approach #99991248928174 to solve this problem....
// only make history of x offset if it's not 0.
@ -3077,28 +3076,44 @@ function Ace2Inner() {
}
scroll.movePage('up');
/*
const modifiedRep = scroll.getFirstVisibleCharacter('up', rep);
rep.selStart[0] = modifiedRep.selStart[0];
if (!isShiftKey) rep.selEnd[0] = modifiedRep.selEnd[0];
const shiftToStartOfFirstLine = false;
if (!isShiftKey) rep.selStart[0] = modifiedRep.selStart[0];
rep.selEnd[0] = modifiedRep.selEnd[0];
// Should we try to maintain X position?
if (previousCharacterOffset[0] >= 1 || previousCharacterOffset[1] >= 1) {
const lengthOfFirstLine = rep.lines.atIndex(rep.selStart[0]).width - 1;
const lengthOfLastLine = rep.lines.atIndex(rep.selEnd[0]).width - 1;
if (previousCharacterOffset[0] <= lengthOfFirstLine) {
rep.selStart[1] = previousCharacterOffset[0];
} else {
rep.selStart[1] = lengthOfFirstLine;
}
if (!isShiftKey) rep.selStart[1] = previousCharacterOffset[0];
} else if (!isShiftKey) { rep.selStart[1] = lengthOfFirstLine; }
if (previousCharacterOffset[1] <= lengthOfLastLine) {
// shift key on page up only modifies selStart, never selEnd!
if (!isShiftKey) rep.selEnd[1] = previousCharacterOffset[1];
} else if (!isShiftKey) { rep.selEnd[1] = lengthOfLastLine; }
// If we're at the same offset as previous event and we're on the top line
// we sohuld go to position 0 :)
if ((previousCharacterOffset[1] === rep.selEnd[1]) && (rep.selEnd[0] === 0)) {
rep.selEnd[1] = 0;
} else {
rep.selEnd[1] = previousCharacterOffset[1];
}
} else {
rep.selEnd[1] = lengthOfLastLine;
}
} else {
rep.selStart[1] = modifiedRep.selStart[1];
if (!isShiftKey) rep.selEnd[1] = modifiedRep.selEnd[1];
rep.selEnd[1] = modifiedRep.selEnd[1];
if (!isShiftKey) rep.selStart[1] = modifiedRep.selStart[1];
}
top.console.log('AFTER', rep.selStart, rep.selEnd);
*/
rep.selStart = [9, 0];
rep.selEnd = [10, 0]; // WTF is going on here..!?!
top.console.log(rep);
updateBrowserSelectionFromRep();
}
// END OF PAGE UP
if (isPageDown) {
// only make history of x offset if it's not 0.
if (rep.selStart[1] !== 0 && rep.selEnd[1] !== 0) {
@ -3110,9 +3125,7 @@ function Ace2Inner() {
previousCharacterOffset = [0, 0];
}
/** *
* Bottom of document - do nothing if we are at the very end
*/
// Bottom of document - do nothing if we are at the very end
// JM TODO: Check if Linemarker modifies width..
const lengthOfLastLine = rep.lines.atIndex(rep.selEnd[0]).width - 1;
const endOfLine = lengthOfLastLine === rep.selEnd[1];
@ -3122,24 +3135,18 @@ function Ace2Inner() {
// If we are right at the bottom of the document, no need to continue
if (atBottom && endOfLine) return;
/** *
* Move the actual view
*/
// Move the actual view
scroll.movePage('down');
const hasMoved = originalPosition.top !== scroll._getViewPortTopBottom().top;
/** *
* Move the caret
*/
// Move the caret
const modifiedRep = scroll.getFirstVisibleCharacter('down', rep);
// shift key on page down only modifies selEnd, never selStart!
if (!isShiftKey) rep.selStart[0] = modifiedRep.selStart[0];
rep.selEnd[0] = modifiedRep.selEnd[0];
if (!isShiftKey) rep.selStart[1] = modifiedRep.selStart[1];
rep.selEnd[1] = modifiedRep.selEnd[1];
if (!hasMoved) {
// we're at the bottom so select the last bit of content.
if (!isShiftKey) rep.selStart[0] = rep.lines.length() - 1;
@ -3167,9 +3174,9 @@ function Ace2Inner() {
if (!isShiftKey) rep.selStart[0] = modifiedRep.selStart[0];
rep.selEnd[0] = modifiedRep.selEnd[0];
}
top.console.log('FINAL', rep);
updateBrowserSelectionFromRep();
}
updateBrowserSelectionFromRep();
}
// scroll to viewport when user presses arrow keys and caret is out of the viewport