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Test Info: Warnings
- This test gets skipped with pattern: os == 'android'
- Manifest: toolkit/content/tests/chrome/chrome.toml
<?xml version="1.0"?>
<!--
XUL Widget Test for scrollbars
-->
<window title="Scrollbar"
<!-- test results are displayed in the html:body -->
<hbox>
<scrollbar orient="horizontal"
id="scroller"
curpos="0"
maxpos="600"
pageincrement="400"
style="width: 500px; margin: 0"/>
</hbox>
<!-- test code goes here -->
<script type="application/javascript"><![CDATA[
/** Test for Scrollbar **/
var scrollbarTester = {
scrollbar: null,
middlePref: false,
startTest() {
this.scrollbar = $("scroller");
this.middlePref = this.getMiddlePref();
var self = this;
[0, 1, 2].map(function(button) {
[false, true].map(function(alt) {
[false, true].map(function(shift) {
self.testThumbDragging(button, alt, shift);
})
})
});
SimpleTest.finish();
},
testThumbDragging(button, withAlt, withShift) {
this.reset();
var x = 160; // on the right half of the thumb
var y = 5;
var isMac = navigator.platform.includes("Mac");
let runtime = SpecialPowers.Services.appinfo;
var isGtk = runtime.widgetToolkit.includes("gtk");
// Start the drag.
this.mousedown(x, y, button, withAlt, withShift);
var newPos = this.getPos();
var scrollToClick = (newPos != 0);
if (isMac || isGtk) {
ok(!scrollToClick, "On Linux and Mac OS X, clicking the scrollbar thumb "+
"should never move it.");
} else if (button == 0 && withShift) {
ok(scrollToClick, "On platforms other than Linux and Mac OS X, holding "+
"shift should enable scroll-to-click on the scrollbar thumb.");
} else if (button == 1 && this.middlePref) {
ok(scrollToClick, "When middlemouse.scrollbarPosition is on, clicking the "+
"thumb with the middle mouse button should center it "+
"around the cursor.")
}
// Move one pixel to the right.
this.mousemove(x+1, y, button, withAlt, withShift);
var newPos2 = this.getPos();
if (newPos2 != newPos) {
ok(newPos2 > newPos, "Scrollbar thumb should follow the mouse when dragged.");
ok(newPos2 - newPos < 3, "Scrollbar shouldn't move further than the mouse when dragged.");
ok(button == 0 || (button == 1 && this.middlePref) || (button == 2 && isGtk),
"Dragging the scrollbar should only be possible with the left mouse button.");
} else if (button == 0) {
// Dragging had no effect.
ok(false, "Dragging the scrollbar thumb should work.");
} else if (button == 1 && this.middlePref && (!isGtk && !isMac)) {
ok(false, "When middlemouse.scrollbarPosition is on, dragging the "+
"scrollbar thumb should be possible using the middle mouse button.");
} else {
ok(true, "Dragging works correctly.");
}
// Release the mouse button.
this.mouseup(x+1, y, button, withAlt, withShift);
var newPos3 = this.getPos();
ok(newPos3 == newPos2,
"Releasing the mouse button after dragging the thumb shouldn't move it.");
},
getMiddlePref() {
// It would be better to test with different middlePref settings,
// but the setting is only queried once, at browser startup, so
// changing it here wouldn't have any effect
var mouseBranch = SpecialPowers.Services.prefs.getBranch("middlemouse.");
return mouseBranch.getBoolPref("scrollbarPosition");
},
setPos(pos) {
this.scrollbar.setAttribute("curpos", pos);
},
getPos() {
return this.scrollbar.getAttribute("curpos");
},
reset() {
this.setPos(0);
},
mousedown(x, y, button, alt, shift) {
synthesizeMouse(this.scrollbar, x, y, { type: "mousedown", 'button': button,
altKey: alt, shiftKey: shift });
},
mousemove(x, y, button, alt, shift) {
synthesizeMouse(this.scrollbar, x, y, { type: "mousemove", 'button': button,
altKey: alt, shiftKey: shift });
},
mouseup(x, y, button, alt, shift) {
synthesizeMouse(this.scrollbar, x, y, { type: "mouseup", 'button': button,
altKey: alt, shiftKey: shift });
}
}
function doTest() {
setTimeout(function() { scrollbarTester.startTest(); }, 0);
}
SimpleTest.waitForExplicitFinish();
addLoadEvent(doTest);
]]></script>
</window>