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Fixed page up, page down, home, and end

This commit is contained in:
Nathan Byrd 2022-01-21 14:27:19 -06:00
parent 358a778b0a
commit 22808cf2e2
1 changed files with 28 additions and 31 deletions
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59
core/full_menu_view.js
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@ -251,16 +251,6 @@ function FullMenuView(options) {
util.inherits(FullMenuView, MenuView);
//TODO: FIXME
function debugLine(message) {
let e = new Error();
let frame = e.stack.split("\n")[3]; // change to 3 for grandparent func
let lineNumber = frame.split(":").reverse()[1];
let functionName = frame.split(" ")[5];
return functionName + ":" + lineNumber + " " + message;
}
FullMenuView.prototype.redraw = function() {
FullMenuView.super_.prototype.redraw.call(this);
@ -365,8 +355,6 @@ FullMenuView.prototype.removeItem = function(index) {
this.positionCacheExpired = true;
};
// :TODO: Apply draw optimizaitons when only two items need drawn vs entire view!
FullMenuView.prototype.focusNext = function() {
if (this.items.length - 1 === this.focusedItemIndex) {
this.clearPage();
@ -456,47 +444,56 @@ FullMenuView.prototype.focusNextColumn = function() {
};
FullMenuView.prototype.focusPreviousPageItem = function() {
//
// Jump to current - up to page size or top
// If already at the top, jump to bottom
//
if (0 === this.focusedItemIndex) {
return this.focusPrevious(); // will jump to bottom
// handle first page
if (this.currentPage == 0) {
// Do nothing, page up shouldn't go down on last page
return;
}
const index = Math.max(this.focusedItemIndex - this.dimens.height, 0);
this.currentPage--;
this.focusedItemIndex = this.pages[this.currentPage].start;
this.clearPage();
this.setFocusItemIndex(index);
this.redraw();
return FullMenuView.super_.prototype.focusPreviousPageItem.call(this);
};
FullMenuView.prototype.focusNextPageItem = function() {
//
// Jump to current + up to page size or bottom
// If already at the bottom, jump to top
//
if (this.items.length - 1 === this.focusedItemIndex) {
return this.focusNext(); // will jump to top
// handle last page
if (this.currentPage == this.pages.length - 1) {
// Do nothing, page up shouldn't go down on last page
return;
}
const index = Math.min(this.focusedItemIndex + this.maxVisibleItems, this.items.length - 1);
this.currentPage++;
this.focusedItemIndex = this.pages[this.currentPage].start;
this.clearPage();
this.setFocusItemIndex(index);
this.redraw();
return FullMenuView.super_.prototype.focusNextPageItem.call(this);
};
FullMenuView.prototype.focusFirst = function() {
this.setFocusItemIndex(0);
this.currentPage = 0;
this.focusedItemIndex = 0;
this.clearPage();
this.redraw();
return FullMenuView.super_.prototype.focusFirst.call(this);
};
FullMenuView.prototype.focusLast = function() {
const index = this.items.length - 1;
this.setFocusItemIndex(index);
this.currentPage = this.pages.length - 1;
this.focusedItemIndex = this.pages[this.currentPage].end;
this.clearPage();
this.redraw();
return FullMenuView.super_.prototype.focusLast.call(this);
};