proxmox-mirrors/mirror_xterm.js
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Drop support for old mouse wheel APIs

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All browsers have supported the WheelEvent (onwheel) for sometime now, since
Firefox does not support onmousewheel which is also non-standard but works with
the standard interface, it makes sense to drop support now.
This commit is contained in:
Daniel Imms 2016-08-03 13:41:54 -07:00
parent 38fa2d78da
commit 6f70984ab6
1 changed files with 16 additions and 26 deletions
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42
src/xterm.js
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@ -405,25 +405,18 @@
* @param {WheelEvent} ev The mouse wheel event.
*/
Viewport.prototype.onWheel = function(ev) {
if (ev.deltaY === 0) {
// Do nothing if it's not a vertical scroll event
return;
}
// Fallback to WheelEvent.DOM_DELTA_PIXEL
var multiplier = 1;
var delta = 0;
if (ev.type === 'DOMMouseScroll') {
if (ev.axis !== MouseScrollEvent.VERTICAL_AXIS) {
return;
}
delta = ev.detail;
// Firefox treats ev.detail as lines, not pixels
if (ev.deltaMode === WheelEvent.DOM_DELTA_LINE) {
multiplier = this.currentRowHeight;
} else if (ev.type === 'mousewheel') {
delta = ev.deltaY
if (ev.deltaMode === WheelEvent.DOM_DELTA_LINE) {
multiplier = this.currentRowHeight;
} else if (ev.deltaMode === WheelEvent.DOM_DELTA_PAGE) {
multiplier = this.currentRowHeight * this.terminal.rows;
}
} else if (ev.deltaMode === WheelEvent.DOM_DELTA_PAGE) {
multiplier = this.currentRowHeight * this.terminal.rows;
}
this.viewportElement.scrollTop += delta * multiplier;
this.viewportElement.scrollTop += ev.deltaY * multiplier;
// Prevent the page from scrolling when the terminal scrolls
ev.preventDefault();
};
@ -1064,11 +1057,10 @@
*/
Terminal.prototype.bindMouse = function() {
var el = this.element, self = this, pressed = 32;
var wheelEvent = ('onmousewheel' in this.context) ? 'mousewheel' : 'DOMMouseScroll';
// mouseup, mousedown, mousewheel
// mouseup, mousedown, wheel
// left click: ^[[M 3<^[[M#3<
// mousewheel up: ^[[M`3>
// wheel up: ^[[M`3>
function sendButton(ev) {
var button
, pos;
@ -1091,7 +1083,7 @@
// button, just in case.
pressed = 32;
break;
case wheelEvent:
case 'wheel':
// nothing. don't
// interfere with
// `pressed`.
@ -1252,7 +1244,7 @@
? 64
: 65;
break;
case 'mousewheel':
case 'wheel':
button = ev.wheelDeltaY > 0
? 64
: 65;
@ -1322,9 +1314,7 @@
return {
x: x,
y: y,
type: (ev.overrideType || ev.type) === wheelEvent
? 'mousewheel'
: (ev.overrideType || ev.type)
type: 'wheel'
};
}
@ -1365,7 +1355,7 @@
// on(self.document, 'mousemove', sendMove);
//}
on(el, wheelEvent, function(ev) {
on(el, 'wheel', function(ev) {
if (!self.mouseEvents) return;
if (self.x10Mouse
|| self.vt300Mouse
@ -1374,9 +1364,9 @@
return self.cancel(ev);
});
// allow mousewheel scrolling in
// allow wheel scrolling in
// the shell for example
on(el, wheelEvent, function(ev) {
on(el, 'wheel', function(ev) {
if (self.mouseEvents) return;
if (self.applicationKeypad) return;
self.viewport.onWheel(ev);