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AppDisplay: allow changing categories by scrolling over them

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Respond to scrolling over the app categories by changing them, so
it is not required to point and click, or to use the All view.

https://bugzilla.gnome.org/show_bug.cgi?id=643426
This commit is contained in:
Giovanni Campagna 2011-02-27 21:46:17 +01:00
parent 29eb3215b3
commit 88bcd0a9ce
1 changed files with 21 additions and 1 deletions
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22
js/ui/appDisplay.js
View File

@ -109,7 +109,14 @@ ViewByCategories.prototype = {
this._view = new AlphabeticalView();
this._filters = new St.BoxLayout({ vertical: true });
// categories can be -1 (the All view) or 0...n-1, where n
// is the number of sections
// -2 is a flag to indicate that nothing is selected
// (used only before the actor is mapped the first time)
this._currentCategory = -2;
this._filters = new St.BoxLayout({ vertical: true, reactive: true });
this._filters.connect('scroll-event', Lang.bind(this, this._scrollFilter));
this.actor.add(this._view.actor, { expand: true, x_fill: true, y_fill: true });
this.actor.add(this._filters, { expand: false, y_fill: false, y_align: St.Align.START });
@ -123,7 +130,20 @@ ViewByCategories.prototype = {
this._sections = [];
},
_scrollFilter: function(actor, event) {
let direction = event.get_scroll_direction();
if (direction == Clutter.ScrollDirection.UP)
this._selectCategory(Math.max(this._currentCategory - 1, -1))
else if (direction == Clutter.ScrollDirection.DOWN)
this._selectCategory(Math.min(this._currentCategory + 1, this._sections.length - 1));
},
_selectCategory: function(num) {
if (this._currentCategory == num) // nothing to do
return;
this._currentCategory = num;
if (num != -1)
this._allFilter.remove_style_pseudo_class('selected');
else