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usercss: create applies-to widgets faster on load

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only the visible portion is built immediately, the rest is throttled
This commit is contained in:
tophf 2017-11-15 10:54:19 +03:00
parent 06cc703887
commit 82651ed6cd
1 changed files with 40 additions and 13 deletions
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53
edit/applies-to-line-widget.js
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@ -30,8 +30,8 @@ function createAppliesToLineWidget(cm) {
initialized = true;
styleVariables = $element({tag: 'style'});
fromLine = null;
toLine = null;
fromLine = 0;
toLine = cm.doc.size;
cm.on('change', onChange);
cm.on('optionChange', onOptionChange);
@ -60,13 +60,8 @@ function createAppliesToLineWidget(cm) {
if (origin === 'appliesTo') {
return;
}
if (fromLine === null || toLine === null) {
fromLine = from.line;
toLine = to.line;
} else {
fromLine = Math.min(fromLine, from.line);
toLine = Math.max(toLine, to.line);
}
fromLine = Math.min(fromLine === null ? from.line : fromLine, from.line);
toLine = Math.max(toLine === null ? to.line : toLine, to.line);
debounce(update, THROTTLE_DELAY);
}
@ -85,7 +80,39 @@ function createAppliesToLineWidget(cm) {
}
function update() {
cm.operation(doUpdate);
const changed = {fromLine, toLine};
fromLine = Math.max(fromLine || 0, cm.display.viewFrom);
toLine = Math.min(toLine === null ? cm.doc.size : toLine, cm.display.viewTo);
const visible = {fromLine, toLine};
if (fromLine >= cm.display.viewFrom && toLine <= cm.display.viewTo) {
cm.operation(doUpdate);
}
if (changed.fromLine !== visible.fromLine || changed.toLine !== visible.toLine) {
setTimeout(updateInvisible, 0, changed, visible);
}
}
function updateInvisible(changed, visible) {
let inOp = false;
if (changed.fromLine < visible.fromLine) {
fromLine = Math.min(fromLine, changed.fromLine);
toLine = Math.min(changed.toLine, visible.fromLine);
inOp = true;
cm.startOperation();
doUpdate();
}
if (changed.toLine > visible.toLine) {
fromLine = Math.max(fromLine, changed.toLine);
toLine = Math.max(changed.toLine, visible.toLine);
if (!inOp) {
inOp = true;
cm.startOperation();
}
cm.operation(doUpdate);
}
if (inOp) {
cm.endOperation();
}
}
function updateWidgetStyle() {
@ -113,8 +140,8 @@ function createAppliesToLineWidget(cm) {
// find which widgets needs to be update
// some widgets (lines) might be deleted
widgets = widgets.filter(w => w.line.lineNo() !== null);
let i = fromLine === null ? 0 : widgets.findIndex(w => w.line.lineNo() > fromLine) - 1;
let j = toLine === null ? 0 : widgets.findIndex(w => w.line.lineNo() > toLine);
let i = widgets.findIndex(w => w.line.lineNo() > fromLine) - 1;
let j = widgets.findIndex(w => w.line.lineNo() > toLine);
if (i === -2) {
i = widgets.length - 1;
}
@ -124,7 +151,7 @@ function createAppliesToLineWidget(cm) {
// decide search range
const fromIndex = widgets[i] ? cm.indexFromPos({line: widgets[i].line.lineNo(), ch: 0}) : 0;
const toIndex = widgets[j] ? cm.indexFromPos({line: widgets[j].line.lineNo(), ch: 0}) : cm.getValue().length;
const toIndex = cm.indexFromPos({line: widgets[j] ? widgets[j].line.lineNo() : toLine, ch: 0});
// splice
i = Math.max(0, i);