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working x offset logic

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This commit is contained in:
John McLear 2021-01-03 11:33:12 +00:00
parent 81e50061dc
commit ffce4d32cb
1 changed files with 46 additions and 15 deletions
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61
src/static/js/ace2_inner.js
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@ -2797,18 +2797,6 @@ function Ace2Inner() {
const isTypeForCmdKey = ((browser.safari || browser.chrome || browser.firefox) ? (type == 'keydown') : (type == 'keypress')); const isTypeForCmdKey = ((browser.safari || browser.chrome || browser.firefox) ? (type == 'keydown') : (type == 'keypress'));
let stopped = false; let stopped = false;
// previousCharacterOffset is used for ensuring caret
// location is kept on up/pagedown events
let previousCharacterOffset;
if (rep.selEnd[1] > 0) {
previousCharacterOffset = rep.selEnd[1];
} else {
previousCharacterOffset = 0;
}
// previousLine is used in page up/down to ensure that
// a page down event always goes across X characters on that line
const previousLine = rep.selEnd[0]; // TODO: cake jm
inCallStackIfNecessary('handleKeyEvent', function () { inCallStackIfNecessary('handleKeyEvent', function () {
if (type == 'keypress' || (isTypeForSpecialKey && keyCode == 13 /* return*/)) { if (type == 'keypress' || (isTypeForSpecialKey && keyCode == 13 /* return*/)) {
// in IE, special keys don't send keypress, the keydown does the action // in IE, special keys don't send keypress, the keydown does the action
@ -3067,6 +3055,15 @@ function Ace2Inner() {
const isPageDown = evt.which === 34; const isPageDown = evt.which === 34;
const isPageUp = evt.which === 33; const isPageUp = evt.which === 33;
const linesLength = rep.lines.length(); const linesLength = rep.lines.length();
let previousCharacterOffset;
// only make history of x offset if it's not 0.
if (rep.selStart[1] !== 0 && rep.selEnd[1] !== 0) {
previousCharacterOffset = [
rep.selStart[1],
rep.selEnd[1],
];
}
// boolean - reflects if the user is attempting to highlight content // 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 highlighting = shiftKey && (rep.selStart[0] !== rep.selEnd[0] || rep.selStart[1] !== rep.selEnd[1]);
@ -3077,8 +3074,25 @@ function Ace2Inner() {
const modifiedRep = scroll.getFirstVisibleCharacter('up', rep); const modifiedRep = scroll.getFirstVisibleCharacter('up', rep);
rep.selStart[0] = modifiedRep.selStart[0]; rep.selStart[0] = modifiedRep.selStart[0];
rep.selEnd[0] = modifiedRep.selEnd[0]; rep.selEnd[0] = modifiedRep.selEnd[0];
rep.selStart[1] = modifiedRep.selStart[1];
rep.selEnd[1] = modifiedRep.selEnd[1]; // 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 (previousCharacterOffset[1] <= lengthOfLastLine) {
rep.selEnd[1] = previousCharacterOffset[1];
} else {
rep.selEnd[1] = lengthOfLastLine;
}
} else {
rep.selStart[1] = modifiedRep.selStart[1];
rep.selEnd[1] = modifiedRep.selEnd[1];
}
} }
if (isPageDown) { if (isPageDown) {
/** * /** *
@ -3110,7 +3124,6 @@ function Ace2Inner() {
rep.selStart[1] = modifiedRep.selStart[1]; rep.selStart[1] = modifiedRep.selStart[1];
rep.selEnd[1] = modifiedRep.selEnd[1]; rep.selEnd[1] = modifiedRep.selEnd[1];
top.console.log(rep.lines.length());
if (!hasMoved) { if (!hasMoved) {
// we're at the bottom so select the last bit of content. // we're at the bottom so select the last bit of content.
rep.selStart[0] = rep.lines.length() - 1; rep.selStart[0] = rep.lines.length() - 1;
@ -3118,6 +3131,24 @@ function Ace2Inner() {
rep.selStart[1] = rep.lines.atIndex(rep.selStart[0]).length; rep.selStart[1] = rep.lines.atIndex(rep.selStart[0]).length;
rep.selEnd[1] = rep.lines.atIndex(rep.selStart[0]).length; rep.selEnd[1] = rep.lines.atIndex(rep.selStart[0]).length;
} else { } else {
// 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 (previousCharacterOffset[1] <= lengthOfLastLine) {
rep.selEnd[1] = previousCharacterOffset[1];
} else {
rep.selEnd[1] = lengthOfLastLine;
}
} else {
rep.selStart[1] = modifiedRep.selStart[1];
rep.selEnd[1] = modifiedRep.selEnd[1];
}
// we moved, this will need modifying to support remembered x offset // we moved, this will need modifying to support remembered x offset
rep.selStart[0] = modifiedRep.selStart[0]; rep.selStart[0] = modifiedRep.selStart[0];
rep.selEnd[0] = modifiedRep.selEnd[0]; rep.selEnd[0] = modifiedRep.selEnd[0];