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[Regression] Remove instances of Element.classList.toggle() with *two* parameters, since browser support is limited

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The Secondary Toolbar buttons for, not to mention the actual toggling of, Scroll/Spread modes are currently completely broken in older browsers (such as IE11).

As a follow-up, it'd probably be a good idea to try and find a *feature complete* `classList` polyfill that could be used instead, but this patch at least addresses the immediate regression.

Please refer to the compatibility information in https://developer.mozilla.org/en-US/docs/Web/API/Element/classList#Browser_compatibility
This commit is contained in:
Jonas Jenwald 2018-06-21 17:55:59 +02:00
parent 34594a5b02
commit 36111a1f40
2 changed files with 42 additions and 15 deletions
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15
web/base_viewer.js
View File

@ -1035,9 +1035,18 @@ class BaseViewer {
}
_updateScrollModeClasses() {
const mode = this.scrollMode, { classList, } = this.viewer;
classList.toggle('scrollHorizontal', mode === ScrollMode.HORIZONTAL);
classList.toggle('scrollWrapped', mode === ScrollMode.WRAPPED);
const { scrollMode, viewer, } = this;
if (scrollMode === ScrollMode.HORIZONTAL) {
viewer.classList.add('scrollHorizontal');
} else {
viewer.classList.remove('scrollHorizontal');
}
if (scrollMode === ScrollMode.WRAPPED) {
viewer.classList.add('scrollWrapped');
} else {
viewer.classList.remove('scrollWrapped');
}
}
setSpreadMode(mode) {

42
web/secondary_toolbar.js
View File

@ -190,23 +190,41 @@ class SecondaryToolbar {
_bindScrollModeListener(buttons) {
this.eventBus.on('scrollmodechanged', function(evt) {
buttons.scrollVerticalButton.classList.toggle('toggled',
evt.mode === ScrollMode.VERTICAL);
buttons.scrollHorizontalButton.classList.toggle('toggled',
evt.mode === ScrollMode.HORIZONTAL);
buttons.scrollWrappedButton.classList.toggle('toggled',
evt.mode === ScrollMode.WRAPPED);
buttons.scrollVerticalButton.classList.remove('toggled');
buttons.scrollHorizontalButton.classList.remove('toggled');
buttons.scrollWrappedButton.classList.remove('toggled');
switch (evt.mode) {
case ScrollMode.VERTICAL:
buttons.scrollVerticalButton.classList.add('toggled');
break;
case ScrollMode.HORIZONTAL:
buttons.scrollHorizontalButton.classList.add('toggled');
break;
case ScrollMode.WRAPPED:
buttons.scrollWrappedButton.classList.add('toggled');
break;
}
});
}
_bindSpreadModeListener(buttons) {
this.eventBus.on('spreadmodechanged', function(evt) {
buttons.spreadNoneButton.classList.toggle('toggled',
evt.mode === SpreadMode.NONE);
buttons.spreadOddButton.classList.toggle('toggled',
evt.mode === SpreadMode.ODD);
buttons.spreadEvenButton.classList.toggle('toggled',
evt.mode === SpreadMode.EVEN);
buttons.spreadNoneButton.classList.remove('toggled');
buttons.spreadOddButton.classList.remove('toggled');
buttons.spreadEvenButton.classList.remove('toggled');
switch (evt.mode) {
case SpreadMode.NONE:
buttons.spreadNoneButton.classList.add('toggled');
break;
case SpreadMode.ODD:
buttons.spreadOddButton.classList.add('toggled');
break;
case SpreadMode.EVEN:
buttons.spreadEvenButton.classList.add('toggled');
break;
}
});
}