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(Yet another) fix for setFocusItemIndex() draw issues!

This commit is contained in:
Bryan Ashby 2016-07-17 22:15:43 -06:00
parent a7993281b9
commit b7274a16d4
1 changed files with 10 additions and 8 deletions
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18
core/vertical_menu_view.js
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@ -170,15 +170,11 @@ VerticalMenuView.prototype.setFocusItemIndex = function(index) {
top : this.focusedItemIndex,
bottom : Math.min(this.focusedItemIndex + this.maxVisibleItems, this.items.length) - 1
};
} else {
this.viewWindow = {
top : 0,
bottom : Math.min(this.maxVisibleItems, this.items.length) - 1
};
this.positionCacheExpired = false; // skip standard behavior
this.performAutoScale();
}
this.positionCacheExpired = false; // skip standard behavior
this.performAutoScale();
this.redraw();
};
@ -218,7 +214,7 @@ VerticalMenuView.prototype.focusNext = function() {
this.viewWindow = {
top : 0,
bottom : Math.min(this.focusedItemIndex + this.maxVisibleItems, this.items.length) - 1
bottom : Math.min(this.maxVisibleItems, this.items.length) - 1
};
} else {
this.focusedItemIndex++;
@ -250,6 +246,12 @@ VerticalMenuView.prototype.focusPrevious = function() {
if(this.focusedItemIndex < this.viewWindow.top) {
this.viewWindow.top--;
this.viewWindow.bottom--;
// adjust for focus index being set & window needing expansion as we scroll up
const rem = (this.viewWindow.bottom - this.viewWindow.top) + 1;
if(rem < this.maxVisibleItems && (this.items.length - 1) > this.focusedItemIndex) {
this.viewWindow.bottom = this.items.length - 1;
}
}
}